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442b77e721
This speeds up the hash function for dynamic symbols. [ruby-core:70129] [Bug #11396], nearly up to Ruby 2.1 levels Power-of-two hash sizing [Feature #9425] speeds up cases where we have a good hash, but this means we can no longer hide behind weak hashes. Unfortunately, object IDs do not hash well, but we may use the extra space in the RSymbol struct to memoize the hash value. Further optimizations should be possible. For now, the st.c APIs force us to calculate rb_str_hash redundantly at dsym registration. * symbol.h (struct RSymbol): add hashval field * symbol.c (dsymbol_alloc): setup hashval field once * hash.c (rb_any_hash): return RSymbol->hashval directly * common.mk: hash.o depends on symbol.h Thanks to Bruno Escherl <bruno@escherl.net> for the bug report [ruby-core:70129] [Bug #11396] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51410 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
4135 lines
96 KiB
C
4135 lines
96 KiB
C
/**********************************************************************
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hash.c -
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$Author$
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created at: Mon Nov 22 18:51:18 JST 1993
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
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Copyright (C) 2000 Information-technology Promotion Agency, Japan
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**********************************************************************/
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#include "internal.h"
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#include "ruby/st.h"
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#include "ruby/util.h"
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#include <errno.h>
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#include "probes.h"
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#include "id.h"
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#include "symbol.h"
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#ifdef __APPLE__
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# ifdef HAVE_CRT_EXTERNS_H
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# include <crt_externs.h>
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# else
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# include "missing/crt_externs.h"
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# endif
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#endif
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#define HAS_EXTRA_STATES(hash, klass) ( \
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((klass = has_extra_methods(rb_obj_class(hash))) != 0) || \
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FL_TEST((hash), FL_EXIVAR|FL_TAINT|HASH_PROC_DEFAULT) || \
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!NIL_P(RHASH_IFNONE(hash)))
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static VALUE
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has_extra_methods(VALUE klass)
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{
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const VALUE base = rb_cHash;
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VALUE c = klass;
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while (c != base) {
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if (rb_class_has_methods(c)) return klass;
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c = RCLASS_SUPER(c);
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}
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return 0;
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}
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static VALUE rb_hash_s_try_convert(VALUE, VALUE);
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/*
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* Hash WB strategy:
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* 1. Check mutate st_* functions
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* * st_insert()
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* * st_insert2()
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* * st_update()
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* * st_add_direct()
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* 2. Insert WBs
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*/
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VALUE
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rb_hash_freeze(VALUE hash)
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{
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return rb_obj_freeze(hash);
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}
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VALUE rb_cHash;
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static VALUE envtbl;
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static ID id_hash, id_yield, id_default, id_flatten_bang;
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VALUE
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rb_hash_ifnone(VALUE h)
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{
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return RHASH_IFNONE(h);
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}
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VALUE
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rb_hash_set_ifnone(VALUE hash, VALUE ifnone)
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{
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RB_OBJ_WRITE(hash, (&RHASH(hash)->ifnone), ifnone);
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return hash;
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}
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static int
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rb_any_cmp(VALUE a, VALUE b)
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{
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if (a == b) return 0;
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if (FIXNUM_P(a) && FIXNUM_P(b)) {
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return a != b;
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}
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if (RB_TYPE_P(a, T_STRING) && RBASIC(a)->klass == rb_cString &&
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RB_TYPE_P(b, T_STRING) && RBASIC(b)->klass == rb_cString) {
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return rb_str_hash_cmp(a, b);
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}
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if (a == Qundef || b == Qundef) return -1;
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if (SYMBOL_P(a) && SYMBOL_P(b)) {
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return a != b;
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}
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return !rb_eql(a, b);
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}
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static VALUE
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hash_recursive(VALUE obj, VALUE arg, int recurse)
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{
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if (recurse) return INT2FIX(0);
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return rb_funcallv(obj, id_hash, 0, 0);
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}
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VALUE
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rb_hash(VALUE obj)
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{
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VALUE hval = rb_exec_recursive_outer(hash_recursive, obj, 0);
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while (!FIXNUM_P(hval)) {
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if (RB_TYPE_P(hval, T_BIGNUM)) {
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int sign;
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unsigned long ul;
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sign = rb_integer_pack(hval, &ul, 1, sizeof(ul), 0,
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INTEGER_PACK_NATIVE_BYTE_ORDER);
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ul &= (1UL << (sizeof(long)*CHAR_BIT-1)) - 1;
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if (sign < 0)
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return LONG2FIX(-(long)ul);
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return LONG2FIX((long)ul);
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}
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hval = rb_to_int(hval);
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}
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return hval;
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}
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long rb_objid_hash(st_index_t index);
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static st_index_t
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rb_any_hash(VALUE a)
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{
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VALUE hval;
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st_index_t hnum;
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if (SPECIAL_CONST_P(a)) {
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if (a == Qundef) return 0;
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if (STATIC_SYM_P(a)) {
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a >>= (RUBY_SPECIAL_SHIFT + ID_SCOPE_SHIFT);
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}
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else if (FLONUM_P(a)) {
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/* prevent pathological behavior: [Bug #10761] */
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return rb_dbl_hash(rb_float_value(a));
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}
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hnum = rb_objid_hash((st_index_t)a);
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}
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else if (BUILTIN_TYPE(a) == T_STRING) {
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hnum = rb_str_hash(a);
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}
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else if (BUILTIN_TYPE(a) == T_SYMBOL) {
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return RSYMBOL(a)->hashval;
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}
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else if (BUILTIN_TYPE(a) == T_FLOAT) {
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return rb_dbl_hash(rb_float_value(a));
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}
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else {
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hval = rb_hash(a);
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hnum = FIX2LONG(hval);
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}
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hnum <<= 1;
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return (st_index_t)RSHIFT(hnum, 1);
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}
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long
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rb_objid_hash(st_index_t index)
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{
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st_index_t hnum = rb_hash_start(index);
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hnum = rb_hash_uint(hnum, (st_index_t)rb_any_hash);
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hnum = rb_hash_end(hnum);
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return hnum;
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}
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int
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rb_hash_iter_lev(VALUE h)
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{
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return RHASH_ITER_LEV(h);
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}
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static const struct st_hash_type objhash = {
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rb_any_cmp,
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rb_any_hash,
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};
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#define rb_ident_cmp st_numcmp
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static st_index_t
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rb_ident_hash(st_data_t n)
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{
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/*
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* This hash function is lightly-tuned for Ruby. Further tuning
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* should be possible. Notes:
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*
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* - (n >> 3) alone is great for heap objects and OK for fixnum,
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* however symbols perform poorly.
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* - (n >> (RUBY_SPECIAL_SHIFT+3)) was added to make symbols hash well,
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* n.b.: +3 to remove ID scope, +1 worked well initially, too
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* - (n << 3) was finally added to avoid losing bits for fixnums
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* - avoid expensive modulo instructions, it is currently only
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* shifts and bitmask operations.
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* - flonum (on 64-bit) is pathologically bad, mix the actual
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* float value in, but do not use the float value as-is since
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* many integers get interpreted as 2.0 or -2.0 [Bug #10761]
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*/
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#ifdef USE_FLONUM /* RUBY */
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if (FLONUM_P(n)) {
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n ^= (st_data_t)rb_float_value(n);
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}
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#endif
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return (st_index_t)((n>>(RUBY_SPECIAL_SHIFT+3)|(n<<3)) ^ (n>>3));
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}
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static const struct st_hash_type identhash = {
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rb_ident_cmp,
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rb_ident_hash,
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};
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typedef int st_foreach_func(st_data_t, st_data_t, st_data_t);
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struct foreach_safe_arg {
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st_table *tbl;
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st_foreach_func *func;
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st_data_t arg;
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};
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static int
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foreach_safe_i(st_data_t key, st_data_t value, st_data_t args, int error)
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{
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int status;
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struct foreach_safe_arg *arg = (void *)args;
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if (error) return ST_STOP;
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status = (*arg->func)(key, value, arg->arg);
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if (status == ST_CONTINUE) {
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return ST_CHECK;
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}
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return status;
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}
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void
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st_foreach_safe(st_table *table, int (*func)(ANYARGS), st_data_t a)
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{
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struct foreach_safe_arg arg;
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arg.tbl = table;
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arg.func = (st_foreach_func *)func;
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arg.arg = a;
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if (st_foreach_check(table, foreach_safe_i, (st_data_t)&arg, 0)) {
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rb_raise(rb_eRuntimeError, "hash modified during iteration");
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}
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}
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typedef int rb_foreach_func(VALUE, VALUE, VALUE);
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struct hash_foreach_arg {
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VALUE hash;
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rb_foreach_func *func;
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VALUE arg;
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};
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static int
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hash_foreach_iter(st_data_t key, st_data_t value, st_data_t argp, int error)
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{
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struct hash_foreach_arg *arg = (struct hash_foreach_arg *)argp;
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int status;
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st_table *tbl;
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if (error) return ST_STOP;
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tbl = RHASH(arg->hash)->ntbl;
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status = (*arg->func)((VALUE)key, (VALUE)value, arg->arg);
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if (RHASH(arg->hash)->ntbl != tbl) {
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rb_raise(rb_eRuntimeError, "rehash occurred during iteration");
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}
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switch (status) {
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case ST_DELETE:
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FL_SET(arg->hash, HASH_DELETED);
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return ST_DELETE;
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case ST_CONTINUE:
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break;
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case ST_STOP:
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return ST_STOP;
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}
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return ST_CHECK;
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}
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static VALUE
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hash_foreach_ensure_rollback(VALUE hash)
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{
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RHASH_ITER_LEV(hash)++;
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return 0;
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}
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static VALUE
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hash_foreach_ensure(VALUE hash)
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{
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if (--RHASH_ITER_LEV(hash) == 0) {
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if (FL_TEST(hash, HASH_DELETED)) {
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st_cleanup_safe(RHASH(hash)->ntbl, (st_data_t)Qundef);
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FL_UNSET(hash, HASH_DELETED);
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}
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}
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return 0;
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}
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static VALUE
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hash_foreach_call(VALUE arg)
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{
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VALUE hash = ((struct hash_foreach_arg *)arg)->hash;
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if (st_foreach_check(RHASH(hash)->ntbl, hash_foreach_iter, (st_data_t)arg, (st_data_t)Qundef)) {
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rb_raise(rb_eRuntimeError, "hash modified during iteration");
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}
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return Qnil;
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}
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void
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rb_hash_foreach(VALUE hash, int (*func)(ANYARGS), VALUE farg)
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{
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struct hash_foreach_arg arg;
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if (!RHASH(hash)->ntbl)
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return;
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RHASH_ITER_LEV(hash)++;
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arg.hash = hash;
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arg.func = (rb_foreach_func *)func;
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arg.arg = farg;
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rb_ensure(hash_foreach_call, (VALUE)&arg, hash_foreach_ensure, hash);
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}
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static VALUE
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hash_alloc(VALUE klass)
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{
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NEWOBJ_OF(hash, struct RHash, klass, T_HASH | (RGENGC_WB_PROTECTED_HASH ? FL_WB_PROTECTED : 0));
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RHASH_SET_IFNONE((VALUE)hash, Qnil);
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return (VALUE)hash;
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}
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static VALUE
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empty_hash_alloc(VALUE klass)
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{
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if (RUBY_DTRACE_HASH_CREATE_ENABLED()) {
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RUBY_DTRACE_HASH_CREATE(0, rb_sourcefile(), rb_sourceline());
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}
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return hash_alloc(klass);
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}
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VALUE
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rb_hash_new(void)
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{
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return hash_alloc(rb_cHash);
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}
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static inline VALUE
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rb_hash_dup_empty(VALUE hash)
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{
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NEWOBJ_OF(ret, struct RHash,
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rb_obj_class(hash),
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(RBASIC(hash)->flags)&(T_MASK|FL_EXIVAR|FL_TAINT));
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if (FL_TEST((hash), FL_EXIVAR))
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rb_copy_generic_ivar((VALUE)(ret),(VALUE)(hash));
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if (FL_TEST(hash, HASH_PROC_DEFAULT)) {
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FL_SET(ret, HASH_PROC_DEFAULT);
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}
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RHASH_SET_IFNONE(ret, RHASH_IFNONE(hash));
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return (VALUE)ret;
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}
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VALUE
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rb_hash_dup(VALUE hash)
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{
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VALUE ret = rb_hash_dup_empty(hash);
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if (!RHASH_EMPTY_P(hash))
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RHASH(ret)->ntbl = st_copy(RHASH(hash)->ntbl);
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return ret;
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}
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static void
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rb_hash_modify_check(VALUE hash)
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{
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rb_check_frozen(hash);
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}
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static struct st_table *
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hash_tbl(VALUE hash)
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{
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if (!RHASH(hash)->ntbl) {
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RHASH(hash)->ntbl = st_init_table(&objhash);
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}
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return RHASH(hash)->ntbl;
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}
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struct st_table *
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rb_hash_tbl(VALUE hash)
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{
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OBJ_WB_UNPROTECT(hash);
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return hash_tbl(hash);
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}
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struct st_table *
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rb_hash_tbl_raw(VALUE hash)
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{
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return hash_tbl(hash);
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}
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static void
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rb_hash_modify(VALUE hash)
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{
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rb_hash_modify_check(hash);
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hash_tbl(hash);
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}
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NORETURN(static void no_new_key(void));
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static void
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no_new_key(void)
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{
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rb_raise(rb_eRuntimeError, "can't add a new key into hash during iteration");
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}
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struct update_callback_arg {
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VALUE hash;
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st_data_t arg;
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};
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#define NOINSERT_UPDATE_CALLBACK(func) \
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static int \
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func##_noinsert(st_data_t *key, st_data_t *val, st_data_t arg, int existing) \
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{ \
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if (!existing) no_new_key(); \
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return func(key, val, (struct update_arg *)arg, existing); \
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} \
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\
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static int \
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func##_insert(st_data_t *key, st_data_t *val, st_data_t arg, int existing) \
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{ \
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return func(key, val, (struct update_arg *)arg, existing); \
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}
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struct update_arg {
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st_data_t arg;
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VALUE hash;
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VALUE new_key;
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VALUE old_key;
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VALUE new_value;
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VALUE old_value;
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};
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static int
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tbl_update(VALUE hash, VALUE key, int (*func)(st_data_t *key, st_data_t *val, st_data_t arg, int existing), st_data_t optional_arg)
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{
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struct update_arg arg;
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int result;
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arg.arg = optional_arg;
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arg.hash = hash;
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arg.new_key = 0;
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arg.old_key = Qundef;
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arg.new_value = 0;
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arg.old_value = Qundef;
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result = st_update(RHASH(hash)->ntbl, (st_data_t)key, func, (st_data_t)&arg);
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/* write barrier */
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if (arg.new_key) RB_OBJ_WRITTEN(hash, arg.old_key, arg.new_key);
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if (arg.new_value) RB_OBJ_WRITTEN(hash, arg.old_value, arg.new_value);
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return result;
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}
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#define UPDATE_CALLBACK(iter_lev, func) ((iter_lev) > 0 ? func##_noinsert : func##_insert)
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#define RHASH_UPDATE_ITER(h, iter_lev, key, func, a) do { \
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tbl_update((h), (key), UPDATE_CALLBACK((iter_lev), func), (st_data_t)(a)); \
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} while (0)
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#define RHASH_UPDATE(hash, key, func, arg) \
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RHASH_UPDATE_ITER(hash, RHASH_ITER_LEV(hash), key, func, arg)
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static void
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default_proc_arity_check(VALUE proc)
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{
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int n = rb_proc_arity(proc);
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if (rb_proc_lambda_p(proc) && n != 2 && (n >= 0 || n < -3)) {
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if (n < 0) n = -n-1;
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rb_raise(rb_eTypeError, "default_proc takes two arguments (2 for %d)", n);
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}
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}
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/*
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* call-seq:
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* Hash.new -> new_hash
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* Hash.new(obj) -> new_hash
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* Hash.new {|hash, key| block } -> new_hash
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*
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* Returns a new, empty hash. If this hash is subsequently accessed by
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* a key that doesn't correspond to a hash entry, the value returned
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* depends on the style of <code>new</code> used to create the hash. In
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* the first form, the access returns <code>nil</code>. If
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* <i>obj</i> is specified, this single object will be used for
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* all <em>default values</em>. If a block is specified, it will be
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* called with the hash object and the key, and should return the
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* default value. It is the block's responsibility to store the value
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* in the hash if required.
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*
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* h = Hash.new("Go Fish")
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* h["a"] = 100
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* h["b"] = 200
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* h["a"] #=> 100
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* h["c"] #=> "Go Fish"
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|
* # The following alters the single default object
|
|
* h["c"].upcase! #=> "GO FISH"
|
|
* h["d"] #=> "GO FISH"
|
|
* h.keys #=> ["a", "b"]
|
|
*
|
|
* # While this creates a new default object each time
|
|
* h = Hash.new { |hash, key| hash[key] = "Go Fish: #{key}" }
|
|
* h["c"] #=> "Go Fish: c"
|
|
* h["c"].upcase! #=> "GO FISH: C"
|
|
* h["d"] #=> "Go Fish: d"
|
|
* h.keys #=> ["c", "d"]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_initialize(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE ifnone;
|
|
|
|
rb_hash_modify(hash);
|
|
if (rb_block_given_p()) {
|
|
rb_check_arity(argc, 0, 0);
|
|
ifnone = rb_block_proc();
|
|
default_proc_arity_check(ifnone);
|
|
RHASH_SET_IFNONE(hash, ifnone);
|
|
FL_SET(hash, HASH_PROC_DEFAULT);
|
|
}
|
|
else {
|
|
rb_check_arity(argc, 0, 1);
|
|
ifnone = argc == 0 ? Qnil : argv[0];
|
|
RHASH_SET_IFNONE(hash, ifnone);
|
|
}
|
|
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Hash[ key, value, ... ] -> new_hash
|
|
* Hash[ [ [key, value], ... ] ] -> new_hash
|
|
* Hash[ object ] -> new_hash
|
|
*
|
|
* Creates a new hash populated with the given objects.
|
|
*
|
|
* Similar to the literal <code>{ _key_ => _value_, ... }</code>. In the first
|
|
* form, keys and values occur in pairs, so there must be an even number of
|
|
* arguments.
|
|
*
|
|
* The second and third form take a single argument which is either an array
|
|
* of key-value pairs or an object convertible to a hash.
|
|
*
|
|
* Hash["a", 100, "b", 200] #=> {"a"=>100, "b"=>200}
|
|
* Hash[ [ ["a", 100], ["b", 200] ] ] #=> {"a"=>100, "b"=>200}
|
|
* Hash["a" => 100, "b" => 200] #=> {"a"=>100, "b"=>200}
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_s_create(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
VALUE hash, tmp;
|
|
int i;
|
|
|
|
if (argc == 1) {
|
|
tmp = rb_hash_s_try_convert(Qnil, argv[0]);
|
|
if (!NIL_P(tmp)) {
|
|
hash = hash_alloc(klass);
|
|
if (RHASH(tmp)->ntbl) {
|
|
RHASH(hash)->ntbl = st_copy(RHASH(tmp)->ntbl);
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
tmp = rb_check_array_type(argv[0]);
|
|
if (!NIL_P(tmp)) {
|
|
long i;
|
|
|
|
hash = hash_alloc(klass);
|
|
for (i = 0; i < RARRAY_LEN(tmp); ++i) {
|
|
VALUE e = RARRAY_AREF(tmp, i);
|
|
VALUE v = rb_check_array_type(e);
|
|
VALUE key, val = Qnil;
|
|
|
|
if (NIL_P(v)) {
|
|
#if 0 /* refix in the next release */
|
|
rb_raise(rb_eArgError, "wrong element type %s at %ld (expected array)",
|
|
rb_builtin_class_name(e), i);
|
|
|
|
#else
|
|
rb_warn("wrong element type %s at %ld (expected array)",
|
|
rb_builtin_class_name(e), i);
|
|
rb_warn("ignoring wrong elements is deprecated, remove them explicitly");
|
|
rb_warn("this causes ArgumentError in the next release");
|
|
continue;
|
|
#endif
|
|
}
|
|
switch (RARRAY_LEN(v)) {
|
|
default:
|
|
rb_raise(rb_eArgError, "invalid number of elements (%ld for 1..2)",
|
|
RARRAY_LEN(v));
|
|
case 2:
|
|
val = RARRAY_AREF(v, 1);
|
|
case 1:
|
|
key = RARRAY_AREF(v, 0);
|
|
rb_hash_aset(hash, key, val);
|
|
}
|
|
}
|
|
return hash;
|
|
}
|
|
}
|
|
if (argc % 2 != 0) {
|
|
rb_raise(rb_eArgError, "odd number of arguments for Hash");
|
|
}
|
|
|
|
hash = hash_alloc(klass);
|
|
for (i=0; i<argc; i+=2) {
|
|
rb_hash_aset(hash, argv[i], argv[i + 1]);
|
|
}
|
|
|
|
return hash;
|
|
}
|
|
|
|
static VALUE
|
|
to_hash(VALUE hash)
|
|
{
|
|
return rb_convert_type(hash, T_HASH, "Hash", "to_hash");
|
|
}
|
|
|
|
VALUE
|
|
rb_check_hash_type(VALUE hash)
|
|
{
|
|
return rb_check_convert_type(hash, T_HASH, "Hash", "to_hash");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Hash.try_convert(obj) -> hash or nil
|
|
*
|
|
* Try to convert <i>obj</i> into a hash, using to_hash method.
|
|
* Returns converted hash or nil if <i>obj</i> cannot be converted
|
|
* for any reason.
|
|
*
|
|
* Hash.try_convert({1=>2}) # => {1=>2}
|
|
* Hash.try_convert("1=>2") # => nil
|
|
*/
|
|
static VALUE
|
|
rb_hash_s_try_convert(VALUE dummy, VALUE hash)
|
|
{
|
|
return rb_check_hash_type(hash);
|
|
}
|
|
|
|
struct rehash_arg {
|
|
VALUE hash;
|
|
st_table *tbl;
|
|
};
|
|
|
|
static int
|
|
rb_hash_rehash_i(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
st_table *tbl = (st_table *)arg;
|
|
|
|
st_insert(tbl, (st_data_t)key, (st_data_t)value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.rehash -> hsh
|
|
*
|
|
* Rebuilds the hash based on the current hash values for each key. If
|
|
* values of key objects have changed since they were inserted, this
|
|
* method will reindex <i>hsh</i>. If <code>Hash#rehash</code> is
|
|
* called while an iterator is traversing the hash, an
|
|
* <code>RuntimeError</code> will be raised in the iterator.
|
|
*
|
|
* a = [ "a", "b" ]
|
|
* c = [ "c", "d" ]
|
|
* h = { a => 100, c => 300 }
|
|
* h[a] #=> 100
|
|
* a[0] = "z"
|
|
* h[a] #=> nil
|
|
* h.rehash #=> {["z", "b"]=>100, ["c", "d"]=>300}
|
|
* h[a] #=> 100
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_rehash(VALUE hash)
|
|
{
|
|
VALUE tmp;
|
|
st_table *tbl;
|
|
|
|
if (RHASH_ITER_LEV(hash) > 0) {
|
|
rb_raise(rb_eRuntimeError, "rehash during iteration");
|
|
}
|
|
rb_hash_modify_check(hash);
|
|
if (!RHASH(hash)->ntbl)
|
|
return hash;
|
|
tmp = hash_alloc(0);
|
|
tbl = st_init_table_with_size(RHASH(hash)->ntbl->type, RHASH(hash)->ntbl->num_entries);
|
|
RHASH(tmp)->ntbl = tbl;
|
|
|
|
rb_hash_foreach(hash, rb_hash_rehash_i, (VALUE)tbl);
|
|
st_free_table(RHASH(hash)->ntbl);
|
|
RHASH(hash)->ntbl = tbl;
|
|
RHASH(tmp)->ntbl = 0;
|
|
|
|
return hash;
|
|
}
|
|
|
|
static VALUE
|
|
hash_default_value(VALUE hash, VALUE key)
|
|
{
|
|
if (rb_method_basic_definition_p(CLASS_OF(hash), id_default)) {
|
|
VALUE ifnone = RHASH_IFNONE(hash);
|
|
if (!FL_TEST(hash, HASH_PROC_DEFAULT)) return ifnone;
|
|
if (key == Qundef) return Qnil;
|
|
return rb_funcall(ifnone, id_yield, 2, hash, key);
|
|
}
|
|
else {
|
|
return rb_funcall(hash, id_default, 1, key);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh[key] -> value
|
|
*
|
|
* Element Reference---Retrieves the <i>value</i> object corresponding
|
|
* to the <i>key</i> object. If not found, returns the default value (see
|
|
* <code>Hash::new</code> for details).
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h["a"] #=> 100
|
|
* h["c"] #=> nil
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_aref(VALUE hash, VALUE key)
|
|
{
|
|
st_data_t val;
|
|
|
|
if (!RHASH(hash)->ntbl || !st_lookup(RHASH(hash)->ntbl, key, &val)) {
|
|
return hash_default_value(hash, key);
|
|
}
|
|
return (VALUE)val;
|
|
}
|
|
|
|
VALUE
|
|
rb_hash_lookup2(VALUE hash, VALUE key, VALUE def)
|
|
{
|
|
st_data_t val;
|
|
|
|
if (!RHASH(hash)->ntbl || !st_lookup(RHASH(hash)->ntbl, key, &val)) {
|
|
return def; /* without Hash#default */
|
|
}
|
|
return (VALUE)val;
|
|
}
|
|
|
|
VALUE
|
|
rb_hash_lookup(VALUE hash, VALUE key)
|
|
{
|
|
return rb_hash_lookup2(hash, key, Qnil);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.fetch(key [, default] ) -> obj
|
|
* hsh.fetch(key) {| key | block } -> obj
|
|
*
|
|
* Returns a value from the hash for the given key. If the key can't be
|
|
* found, there are several options: With no other arguments, it will
|
|
* raise an <code>KeyError</code> exception; if <i>default</i> is
|
|
* given, then that will be returned; if the optional code block is
|
|
* specified, then that will be run and its result returned.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.fetch("a") #=> 100
|
|
* h.fetch("z", "go fish") #=> "go fish"
|
|
* h.fetch("z") { |el| "go fish, #{el}"} #=> "go fish, z"
|
|
*
|
|
* The following example shows that an exception is raised if the key
|
|
* is not found and a default value is not supplied.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.fetch("z")
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* prog.rb:2:in `fetch': key not found (KeyError)
|
|
* from prog.rb:2
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_fetch_m(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE key;
|
|
st_data_t val;
|
|
long block_given;
|
|
|
|
rb_check_arity(argc, 1, 2);
|
|
key = argv[0];
|
|
|
|
block_given = rb_block_given_p();
|
|
if (block_given && argc == 2) {
|
|
rb_warn("block supersedes default value argument");
|
|
}
|
|
if (!RHASH(hash)->ntbl || !st_lookup(RHASH(hash)->ntbl, key, &val)) {
|
|
if (block_given) return rb_yield(key);
|
|
if (argc == 1) {
|
|
VALUE desc = rb_protect(rb_inspect, key, 0);
|
|
if (NIL_P(desc)) {
|
|
desc = rb_any_to_s(key);
|
|
}
|
|
desc = rb_str_ellipsize(desc, 65);
|
|
rb_raise(rb_eKeyError, "key not found: %"PRIsVALUE, desc);
|
|
}
|
|
return argv[1];
|
|
}
|
|
return (VALUE)val;
|
|
}
|
|
|
|
VALUE
|
|
rb_hash_fetch(VALUE hash, VALUE key)
|
|
{
|
|
return rb_hash_fetch_m(1, &key, hash);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.default(key=nil) -> obj
|
|
*
|
|
* Returns the default value, the value that would be returned by
|
|
* <i>hsh</i>[<i>key</i>] if <i>key</i> did not exist in <i>hsh</i>.
|
|
* See also <code>Hash::new</code> and <code>Hash#default=</code>.
|
|
*
|
|
* h = Hash.new #=> {}
|
|
* h.default #=> nil
|
|
* h.default(2) #=> nil
|
|
*
|
|
* h = Hash.new("cat") #=> {}
|
|
* h.default #=> "cat"
|
|
* h.default(2) #=> "cat"
|
|
*
|
|
* h = Hash.new {|h,k| h[k] = k.to_i*10} #=> {}
|
|
* h.default #=> nil
|
|
* h.default(2) #=> 20
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_default(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE key, ifnone;
|
|
|
|
rb_check_arity(argc, 0, 1);
|
|
key = argv[0];
|
|
ifnone = RHASH_IFNONE(hash);
|
|
if (FL_TEST(hash, HASH_PROC_DEFAULT)) {
|
|
if (argc == 0) return Qnil;
|
|
return rb_funcall(ifnone, id_yield, 2, hash, key);
|
|
}
|
|
return ifnone;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.default = obj -> obj
|
|
*
|
|
* Sets the default value, the value returned for a key that does not
|
|
* exist in the hash. It is not possible to set the default to a
|
|
* <code>Proc</code> that will be executed on each key lookup.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.default = "Go fish"
|
|
* h["a"] #=> 100
|
|
* h["z"] #=> "Go fish"
|
|
* # This doesn't do what you might hope...
|
|
* h.default = proc do |hash, key|
|
|
* hash[key] = key + key
|
|
* end
|
|
* h[2] #=> #<Proc:0x401b3948@-:6>
|
|
* h["cat"] #=> #<Proc:0x401b3948@-:6>
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_set_default(VALUE hash, VALUE ifnone)
|
|
{
|
|
rb_hash_modify_check(hash);
|
|
RHASH_SET_IFNONE(hash, ifnone);
|
|
FL_UNSET(hash, HASH_PROC_DEFAULT);
|
|
return ifnone;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.default_proc -> anObject
|
|
*
|
|
* If <code>Hash::new</code> was invoked with a block, return that
|
|
* block, otherwise return <code>nil</code>.
|
|
*
|
|
* h = Hash.new {|h,k| h[k] = k*k } #=> {}
|
|
* p = h.default_proc #=> #<Proc:0x401b3d08@-:1>
|
|
* a = [] #=> []
|
|
* p.call(a, 2)
|
|
* a #=> [nil, nil, 4]
|
|
*/
|
|
|
|
|
|
static VALUE
|
|
rb_hash_default_proc(VALUE hash)
|
|
{
|
|
if (FL_TEST(hash, HASH_PROC_DEFAULT)) {
|
|
return RHASH_IFNONE(hash);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.default_proc = proc_obj or nil
|
|
*
|
|
* Sets the default proc to be executed on each failed key lookup.
|
|
*
|
|
* h.default_proc = proc do |hash, key|
|
|
* hash[key] = key + key
|
|
* end
|
|
* h[2] #=> 4
|
|
* h["cat"] #=> "catcat"
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_set_default_proc(VALUE hash, VALUE proc)
|
|
{
|
|
VALUE b;
|
|
|
|
rb_hash_modify_check(hash);
|
|
if (NIL_P(proc)) {
|
|
FL_UNSET(hash, HASH_PROC_DEFAULT);
|
|
RHASH_SET_IFNONE(hash, proc);
|
|
return proc;
|
|
}
|
|
b = rb_check_convert_type(proc, T_DATA, "Proc", "to_proc");
|
|
if (NIL_P(b) || !rb_obj_is_proc(b)) {
|
|
rb_raise(rb_eTypeError,
|
|
"wrong default_proc type %s (expected Proc)",
|
|
rb_obj_classname(proc));
|
|
}
|
|
proc = b;
|
|
default_proc_arity_check(proc);
|
|
RHASH_SET_IFNONE(hash, proc);
|
|
FL_SET(hash, HASH_PROC_DEFAULT);
|
|
return proc;
|
|
}
|
|
|
|
static int
|
|
key_i(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
|
|
if (rb_equal(value, args[0])) {
|
|
args[1] = key;
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.key(value) -> key
|
|
*
|
|
* Returns the key of an occurrence of a given value. If the value is
|
|
* not found, returns <code>nil</code>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300, "d" => 300 }
|
|
* h.key(200) #=> "b"
|
|
* h.key(300) #=> "c"
|
|
* h.key(999) #=> nil
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_key(VALUE hash, VALUE value)
|
|
{
|
|
VALUE args[2];
|
|
|
|
args[0] = value;
|
|
args[1] = Qnil;
|
|
|
|
rb_hash_foreach(hash, key_i, (VALUE)args);
|
|
|
|
return args[1];
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
rb_hash_index(VALUE hash, VALUE value)
|
|
{
|
|
rb_warn("Hash#index is deprecated; use Hash#key");
|
|
return rb_hash_key(hash, value);
|
|
}
|
|
|
|
/*
|
|
* delete a specified entry a given key.
|
|
* if there is the corresponding entry, return a value of the entry.
|
|
* if there is no corresponding entry, return Qundef.
|
|
*/
|
|
VALUE
|
|
rb_hash_delete_entry(VALUE hash, VALUE key)
|
|
{
|
|
st_data_t ktmp = (st_data_t)key, val;
|
|
|
|
if (!RHASH(hash)->ntbl) {
|
|
return Qundef;
|
|
}
|
|
else if (RHASH_ITER_LEV(hash) > 0 &&
|
|
(st_delete_safe(RHASH(hash)->ntbl, &ktmp, &val, (st_data_t)Qundef))) {
|
|
FL_SET(hash, HASH_DELETED);
|
|
return (VALUE)val;
|
|
}
|
|
else if (st_delete(RHASH(hash)->ntbl, &ktmp, &val)) {
|
|
return (VALUE)val;
|
|
}
|
|
else {
|
|
return Qundef;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* delete a specified entry by a given key.
|
|
* if there is the corresponding entry, return a value of the entry.
|
|
* if there is no corresponding entry, return Qnil.
|
|
*/
|
|
VALUE
|
|
rb_hash_delete(VALUE hash, VALUE key)
|
|
{
|
|
VALUE deleted_value = rb_hash_delete_entry(hash, key);
|
|
|
|
if (deleted_value != Qundef) { /* likely pass */
|
|
return deleted_value;
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.delete(key) -> value
|
|
* hsh.delete(key) {| key | block } -> value
|
|
*
|
|
* Deletes the key-value pair and returns the value from <i>hsh</i> whose
|
|
* key is equal to <i>key</i>. If the key is not found, it returns
|
|
* <em>nil</em>. If the optional code block is given and the
|
|
* key is not found, pass in the key and return the result of
|
|
* <i>block</i>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.delete("a") #=> 100
|
|
* h.delete("z") #=> nil
|
|
* h.delete("z") { |el| "#{el} not found" } #=> "z not found"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_delete_m(VALUE hash, VALUE key)
|
|
{
|
|
VALUE val;
|
|
|
|
rb_hash_modify_check(hash);
|
|
val = rb_hash_delete_entry(hash, key);
|
|
|
|
if (val != Qundef) {
|
|
return val;
|
|
}
|
|
else {
|
|
if (rb_block_given_p()) {
|
|
return rb_yield(key);
|
|
}
|
|
else {
|
|
return Qnil;
|
|
}
|
|
}
|
|
}
|
|
|
|
struct shift_var {
|
|
VALUE key;
|
|
VALUE val;
|
|
};
|
|
|
|
static int
|
|
shift_i_safe(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
struct shift_var *var = (struct shift_var *)arg;
|
|
|
|
var->key = key;
|
|
var->val = value;
|
|
return ST_STOP;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.shift -> anArray or obj
|
|
*
|
|
* Removes a key-value pair from <i>hsh</i> and returns it as the
|
|
* two-item array <code>[</code> <i>key, value</i> <code>]</code>, or
|
|
* the hash's default value if the hash is empty.
|
|
*
|
|
* h = { 1 => "a", 2 => "b", 3 => "c" }
|
|
* h.shift #=> [1, "a"]
|
|
* h #=> {2=>"b", 3=>"c"}
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_shift(VALUE hash)
|
|
{
|
|
struct shift_var var;
|
|
|
|
rb_hash_modify_check(hash);
|
|
if (RHASH(hash)->ntbl) {
|
|
var.key = Qundef;
|
|
if (RHASH_ITER_LEV(hash) == 0) {
|
|
if (st_shift(RHASH(hash)->ntbl, &var.key, &var.val)) {
|
|
return rb_assoc_new(var.key, var.val);
|
|
}
|
|
}
|
|
else {
|
|
rb_hash_foreach(hash, shift_i_safe, (VALUE)&var);
|
|
if (var.key != Qundef) {
|
|
rb_hash_delete_entry(hash, var.key);
|
|
return rb_assoc_new(var.key, var.val);
|
|
}
|
|
}
|
|
}
|
|
return hash_default_value(hash, Qnil);
|
|
}
|
|
|
|
static int
|
|
delete_if_i(VALUE key, VALUE value, VALUE hash)
|
|
{
|
|
if (RTEST(rb_yield_values(2, key, value))) {
|
|
return ST_DELETE;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static VALUE
|
|
hash_enum_size(VALUE hash, VALUE args, VALUE eobj)
|
|
{
|
|
return rb_hash_size(hash);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.delete_if {| key, value | block } -> hsh
|
|
* hsh.delete_if -> an_enumerator
|
|
*
|
|
* Deletes every key-value pair from <i>hsh</i> for which <i>block</i>
|
|
* evaluates to <code>true</code>.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300 }
|
|
* h.delete_if {|key, value| key >= "b" } #=> {"a"=>100}
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_delete_if(VALUE hash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_modify_check(hash);
|
|
if (RHASH(hash)->ntbl)
|
|
rb_hash_foreach(hash, delete_if_i, hash);
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.reject! {| key, value | block } -> hsh or nil
|
|
* hsh.reject! -> an_enumerator
|
|
*
|
|
* Equivalent to <code>Hash#delete_if</code>, but returns
|
|
* <code>nil</code> if no changes were made.
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_reject_bang(VALUE hash)
|
|
{
|
|
st_index_t n;
|
|
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_modify(hash);
|
|
n = RHASH_SIZE(hash);
|
|
if (!n) return Qnil;
|
|
rb_hash_foreach(hash, delete_if_i, hash);
|
|
if (n == RHASH(hash)->ntbl->num_entries) return Qnil;
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
reject_i(VALUE key, VALUE value, VALUE result)
|
|
{
|
|
if (!RTEST(rb_yield_values(2, key, value))) {
|
|
rb_hash_aset(result, key, value);
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.reject {|key, value| block} -> a_hash
|
|
* hsh.reject -> an_enumerator
|
|
*
|
|
* Returns a new hash consisting of entries for which the block returns false.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300 }
|
|
* h.reject {|k,v| k < "b"} #=> {"b" => 200, "c" => 300}
|
|
* h.reject {|k,v| v > 100} #=> {"a" => 100}
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_reject(VALUE hash)
|
|
{
|
|
VALUE result;
|
|
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
if (RTEST(ruby_verbose)) {
|
|
VALUE klass;
|
|
if (HAS_EXTRA_STATES(hash, klass)) {
|
|
rb_warn("extra states are no longer copied: %+"PRIsVALUE, hash);
|
|
}
|
|
}
|
|
result = rb_hash_new();
|
|
if (!RHASH_EMPTY_P(hash)) {
|
|
rb_hash_foreach(hash, reject_i, result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.values_at(key, ...) -> array
|
|
*
|
|
* Return an array containing the values associated with the given keys.
|
|
* Also see <code>Hash.select</code>.
|
|
*
|
|
* h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
|
|
* h.values_at("cow", "cat") #=> ["bovine", "feline"]
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_values_at(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE result = rb_ary_new2(argc);
|
|
long i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_ary_push(result, rb_hash_aref(hash, argv[i]));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.fetch_values(key, ...) -> array
|
|
* hsh.fetch_values(key, ...) { |key| block } -> array
|
|
*
|
|
* Returns an array containing the values associated with the given keys
|
|
* but also raises <code>KeyError</code> when one of keys can't be found.
|
|
* Also see <code>Hash#values_at</code> and <code>Hash#fetch</code>.
|
|
*
|
|
* h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
|
|
*
|
|
* h.fetch_values("cow", "cat") #=> ["bovine", "feline"]
|
|
* h.fetch_values("cow", "bird") # raises KeyError
|
|
* h.fetch_values("cow", "bird") { |k| k.upcase } #=> ["bovine", "BIRD"]
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_fetch_values(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE result = rb_ary_new2(argc);
|
|
long i;
|
|
|
|
for (i=0; i<argc; i++) {
|
|
rb_ary_push(result, rb_hash_fetch(hash, argv[i]));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
select_i(VALUE key, VALUE value, VALUE result)
|
|
{
|
|
if (RTEST(rb_yield_values(2, key, value))) {
|
|
rb_hash_aset(result, key, value);
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.select {|key, value| block} -> a_hash
|
|
* hsh.select -> an_enumerator
|
|
*
|
|
* Returns a new hash consisting of entries for which the block returns true.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300 }
|
|
* h.select {|k,v| k > "a"} #=> {"b" => 200, "c" => 300}
|
|
* h.select {|k,v| v < 200} #=> {"a" => 100}
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_select(VALUE hash)
|
|
{
|
|
VALUE result;
|
|
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
result = rb_hash_new();
|
|
if (!RHASH_EMPTY_P(hash)) {
|
|
rb_hash_foreach(hash, select_i, result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
keep_if_i(VALUE key, VALUE value, VALUE hash)
|
|
{
|
|
if (!RTEST(rb_yield_values(2, key, value))) {
|
|
return ST_DELETE;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.select! {| key, value | block } -> hsh or nil
|
|
* hsh.select! -> an_enumerator
|
|
*
|
|
* Equivalent to <code>Hash#keep_if</code>, but returns
|
|
* <code>nil</code> if no changes were made.
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_select_bang(VALUE hash)
|
|
{
|
|
st_index_t n;
|
|
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_modify_check(hash);
|
|
if (!RHASH(hash)->ntbl)
|
|
return Qnil;
|
|
n = RHASH(hash)->ntbl->num_entries;
|
|
rb_hash_foreach(hash, keep_if_i, hash);
|
|
if (n == RHASH(hash)->ntbl->num_entries) return Qnil;
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.keep_if {| key, value | block } -> hsh
|
|
* hsh.keep_if -> an_enumerator
|
|
*
|
|
* Deletes every key-value pair from <i>hsh</i> for which <i>block</i>
|
|
* evaluates to false.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_keep_if(VALUE hash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_modify_check(hash);
|
|
if (RHASH(hash)->ntbl)
|
|
rb_hash_foreach(hash, keep_if_i, hash);
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
clear_i(VALUE key, VALUE value, VALUE dummy)
|
|
{
|
|
return ST_DELETE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.clear -> hsh
|
|
*
|
|
* Removes all key-value pairs from <i>hsh</i>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 } #=> {"a"=>100, "b"=>200}
|
|
* h.clear #=> {}
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_clear(VALUE hash)
|
|
{
|
|
rb_hash_modify_check(hash);
|
|
if (!RHASH(hash)->ntbl)
|
|
return hash;
|
|
if (RHASH(hash)->ntbl->num_entries > 0) {
|
|
if (RHASH_ITER_LEV(hash) > 0)
|
|
rb_hash_foreach(hash, clear_i, 0);
|
|
else
|
|
st_clear(RHASH(hash)->ntbl);
|
|
}
|
|
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
hash_aset(st_data_t *key, st_data_t *val, struct update_arg *arg, int existing)
|
|
{
|
|
if (existing) {
|
|
arg->new_value = arg->arg;
|
|
arg->old_value = *val;
|
|
}
|
|
else {
|
|
arg->new_key = *key;
|
|
arg->new_value = arg->arg;
|
|
}
|
|
*val = arg->arg;
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static int
|
|
hash_aset_str(st_data_t *key, st_data_t *val, struct update_arg *arg, int existing)
|
|
{
|
|
if (!existing) {
|
|
*key = rb_str_new_frozen(*key);
|
|
}
|
|
return hash_aset(key, val, arg, existing);
|
|
}
|
|
|
|
NOINSERT_UPDATE_CALLBACK(hash_aset);
|
|
NOINSERT_UPDATE_CALLBACK(hash_aset_str);
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh[key] = value -> value
|
|
* hsh.store(key, value) -> value
|
|
*
|
|
* == Element Assignment
|
|
*
|
|
* Associates the value given by +value+ with the key given by +key+.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h["a"] = 9
|
|
* h["c"] = 4
|
|
* h #=> {"a"=>9, "b"=>200, "c"=>4}
|
|
* h.store("d", 42) #=> 42
|
|
* h #=> {"a"=>9, "b"=>200, "c"=>4, "d"=>42}
|
|
*
|
|
* +key+ should not have its value changed while it is in use as a key (an
|
|
* <tt>unfrozen String</tt> passed as a key will be duplicated and frozen).
|
|
*
|
|
* a = "a"
|
|
* b = "b".freeze
|
|
* h = { a => 100, b => 200 }
|
|
* h.key(100).equal? a #=> false
|
|
* h.key(200).equal? b #=> true
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_aset(VALUE hash, VALUE key, VALUE val)
|
|
{
|
|
int iter_lev = RHASH_ITER_LEV(hash);
|
|
st_table *tbl = RHASH(hash)->ntbl;
|
|
|
|
rb_hash_modify(hash);
|
|
if (!tbl) {
|
|
if (iter_lev > 0) no_new_key();
|
|
tbl = hash_tbl(hash);
|
|
}
|
|
if (tbl->type == &identhash || rb_obj_class(key) != rb_cString) {
|
|
RHASH_UPDATE_ITER(hash, iter_lev, key, hash_aset, val);
|
|
}
|
|
else {
|
|
RHASH_UPDATE_ITER(hash, iter_lev, key, hash_aset_str, val);
|
|
}
|
|
return val;
|
|
}
|
|
|
|
static int
|
|
replace_i(VALUE key, VALUE val, VALUE hash)
|
|
{
|
|
rb_hash_aset(hash, key, val);
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
rb_hash_initialize_copy(VALUE hash, VALUE hash2)
|
|
{
|
|
st_table *ntbl;
|
|
|
|
rb_hash_modify_check(hash);
|
|
hash2 = to_hash(hash2);
|
|
|
|
Check_Type(hash2, T_HASH);
|
|
|
|
if (hash == hash2) return hash;
|
|
|
|
ntbl = RHASH(hash)->ntbl;
|
|
if (RHASH(hash2)->ntbl) {
|
|
if (ntbl) st_free_table(ntbl);
|
|
RHASH(hash)->ntbl = st_copy(RHASH(hash2)->ntbl);
|
|
if (RHASH(hash)->ntbl->num_entries)
|
|
rb_hash_rehash(hash);
|
|
}
|
|
else if (ntbl) {
|
|
st_clear(ntbl);
|
|
}
|
|
|
|
if (FL_TEST(hash2, HASH_PROC_DEFAULT)) {
|
|
FL_SET(hash, HASH_PROC_DEFAULT);
|
|
}
|
|
else {
|
|
FL_UNSET(hash, HASH_PROC_DEFAULT);
|
|
}
|
|
RHASH_SET_IFNONE(hash, RHASH_IFNONE(hash2));
|
|
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.replace(other_hash) -> hsh
|
|
*
|
|
* Replaces the contents of <i>hsh</i> with the contents of
|
|
* <i>other_hash</i>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.replace({ "c" => 300, "d" => 400 }) #=> {"c"=>300, "d"=>400}
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_replace(VALUE hash, VALUE hash2)
|
|
{
|
|
st_table *table2;
|
|
|
|
rb_hash_modify_check(hash);
|
|
if (hash == hash2) return hash;
|
|
hash2 = to_hash(hash2);
|
|
|
|
RHASH_SET_IFNONE(hash, RHASH_IFNONE(hash2));
|
|
if (FL_TEST(hash2, HASH_PROC_DEFAULT))
|
|
FL_SET(hash, HASH_PROC_DEFAULT);
|
|
else
|
|
FL_UNSET(hash, HASH_PROC_DEFAULT);
|
|
|
|
table2 = RHASH(hash2)->ntbl;
|
|
|
|
rb_hash_clear(hash);
|
|
if (table2) hash_tbl(hash)->type = table2->type;
|
|
rb_hash_foreach(hash2, replace_i, hash);
|
|
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.length -> fixnum
|
|
* hsh.size -> fixnum
|
|
*
|
|
* Returns the number of key-value pairs in the hash.
|
|
*
|
|
* h = { "d" => 100, "a" => 200, "v" => 300, "e" => 400 }
|
|
* h.length #=> 4
|
|
* h.delete("a") #=> 200
|
|
* h.length #=> 3
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_size(VALUE hash)
|
|
{
|
|
return INT2FIX(RHASH_SIZE(hash));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.empty? -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>hsh</i> contains no key-value pairs.
|
|
*
|
|
* {}.empty? #=> true
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_empty_p(VALUE hash)
|
|
{
|
|
return RHASH_EMPTY_P(hash) ? Qtrue : Qfalse;
|
|
}
|
|
|
|
static int
|
|
each_value_i(VALUE key, VALUE value)
|
|
{
|
|
rb_yield(value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.each_value {| value | block } -> hsh
|
|
* hsh.each_value -> an_enumerator
|
|
*
|
|
* Calls <i>block</i> once for each key in <i>hsh</i>, passing the
|
|
* value as a parameter.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.each_value {|value| puts value }
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* 100
|
|
* 200
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_each_value(VALUE hash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_foreach(hash, each_value_i, 0);
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
each_key_i(VALUE key, VALUE value)
|
|
{
|
|
rb_yield(key);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.each_key {| key | block } -> hsh
|
|
* hsh.each_key -> an_enumerator
|
|
*
|
|
* Calls <i>block</i> once for each key in <i>hsh</i>, passing the key
|
|
* as a parameter.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.each_key {|key| puts key }
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* a
|
|
* b
|
|
*/
|
|
static VALUE
|
|
rb_hash_each_key(VALUE hash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
rb_hash_foreach(hash, each_key_i, 0);
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
each_pair_i(VALUE key, VALUE value)
|
|
{
|
|
rb_yield(rb_assoc_new(key, value));
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static int
|
|
each_pair_i_fast(VALUE key, VALUE value)
|
|
{
|
|
rb_yield_values(2, key, value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.each {| key, value | block } -> hsh
|
|
* hsh.each_pair {| key, value | block } -> hsh
|
|
* hsh.each -> an_enumerator
|
|
* hsh.each_pair -> an_enumerator
|
|
*
|
|
* Calls <i>block</i> once for each key in <i>hsh</i>, passing the key-value
|
|
* pair as parameters.
|
|
*
|
|
* If no block is given, an enumerator is returned instead.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.each {|key, value| puts "#{key} is #{value}" }
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* a is 100
|
|
* b is 200
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_each_pair(VALUE hash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(hash, 0, 0, hash_enum_size);
|
|
if (rb_block_arity() > 1)
|
|
rb_hash_foreach(hash, each_pair_i_fast, 0);
|
|
else
|
|
rb_hash_foreach(hash, each_pair_i, 0);
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
to_a_i(VALUE key, VALUE value, VALUE ary)
|
|
{
|
|
rb_ary_push(ary, rb_assoc_new(key, value));
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.to_a -> array
|
|
*
|
|
* Converts <i>hsh</i> to a nested array of <code>[</code> <i>key,
|
|
* value</i> <code>]</code> arrays.
|
|
*
|
|
* h = { "c" => 300, "a" => 100, "d" => 400, "c" => 300 }
|
|
* h.to_a #=> [["c", 300], ["a", 100], ["d", 400]]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_to_a(VALUE hash)
|
|
{
|
|
VALUE ary;
|
|
|
|
ary = rb_ary_new_capa(RHASH_SIZE(hash));
|
|
rb_hash_foreach(hash, to_a_i, ary);
|
|
OBJ_INFECT(ary, hash);
|
|
|
|
return ary;
|
|
}
|
|
|
|
static int
|
|
inspect_i(VALUE key, VALUE value, VALUE str)
|
|
{
|
|
VALUE str2;
|
|
|
|
str2 = rb_inspect(key);
|
|
if (RSTRING_LEN(str) > 1) {
|
|
rb_str_buf_cat_ascii(str, ", ");
|
|
}
|
|
else {
|
|
rb_enc_copy(str, str2);
|
|
}
|
|
rb_str_buf_append(str, str2);
|
|
OBJ_INFECT(str, str2);
|
|
rb_str_buf_cat_ascii(str, "=>");
|
|
str2 = rb_inspect(value);
|
|
rb_str_buf_append(str, str2);
|
|
OBJ_INFECT(str, str2);
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static VALUE
|
|
inspect_hash(VALUE hash, VALUE dummy, int recur)
|
|
{
|
|
VALUE str;
|
|
|
|
if (recur) return rb_usascii_str_new2("{...}");
|
|
str = rb_str_buf_new2("{");
|
|
rb_hash_foreach(hash, inspect_i, str);
|
|
rb_str_buf_cat2(str, "}");
|
|
OBJ_INFECT(str, hash);
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.to_s -> string
|
|
* hsh.inspect -> string
|
|
*
|
|
* Return the contents of this hash as a string.
|
|
*
|
|
* h = { "c" => 300, "a" => 100, "d" => 400, "c" => 300 }
|
|
* h.to_s #=> "{\"c\"=>300, \"a\"=>100, \"d\"=>400}"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_inspect(VALUE hash)
|
|
{
|
|
if (RHASH_EMPTY_P(hash))
|
|
return rb_usascii_str_new2("{}");
|
|
return rb_exec_recursive(inspect_hash, hash, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.to_hash => hsh
|
|
*
|
|
* Returns +self+.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_to_hash(VALUE hash)
|
|
{
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.to_h -> hsh or new_hash
|
|
*
|
|
* Returns +self+. If called on a subclass of Hash, converts
|
|
* the receiver to a Hash object.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_to_h(VALUE hash)
|
|
{
|
|
if (rb_obj_class(hash) != rb_cHash) {
|
|
VALUE ret = rb_hash_new();
|
|
if (!RHASH_EMPTY_P(hash))
|
|
RHASH(ret)->ntbl = st_copy(RHASH(hash)->ntbl);
|
|
if (FL_TEST(hash, HASH_PROC_DEFAULT)) {
|
|
FL_SET(ret, HASH_PROC_DEFAULT);
|
|
}
|
|
RHASH_SET_IFNONE(ret, RHASH_IFNONE(hash));
|
|
return ret;
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
keys_i(VALUE key, VALUE value, VALUE ary)
|
|
{
|
|
rb_ary_push(ary, key);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.keys -> array
|
|
*
|
|
* Returns a new array populated with the keys from this hash. See also
|
|
* <code>Hash#values</code>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300, "d" => 400 }
|
|
* h.keys #=> ["a", "b", "c", "d"]
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_keys(VALUE hash)
|
|
{
|
|
VALUE keys;
|
|
st_index_t size = RHASH_SIZE(hash);
|
|
|
|
keys = rb_ary_new_capa(size);
|
|
if (size == 0) return keys;
|
|
|
|
if (ST_DATA_COMPATIBLE_P(VALUE)) {
|
|
st_table *table = RHASH(hash)->ntbl;
|
|
|
|
rb_gc_writebarrier_remember(keys);
|
|
RARRAY_PTR_USE(keys, ptr, {
|
|
size = st_keys_check(table, ptr, size, Qundef);
|
|
});
|
|
rb_ary_set_len(keys, size);
|
|
}
|
|
else {
|
|
rb_hash_foreach(hash, keys_i, keys);
|
|
}
|
|
|
|
return keys;
|
|
}
|
|
|
|
static int
|
|
values_i(VALUE key, VALUE value, VALUE ary)
|
|
{
|
|
rb_ary_push(ary, value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.values -> array
|
|
*
|
|
* Returns a new array populated with the values from <i>hsh</i>. See
|
|
* also <code>Hash#keys</code>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200, "c" => 300 }
|
|
* h.values #=> [100, 200, 300]
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_values(VALUE hash)
|
|
{
|
|
VALUE values;
|
|
st_index_t size = RHASH_SIZE(hash);
|
|
|
|
values = rb_ary_new_capa(size);
|
|
if (size == 0) return values;
|
|
|
|
if (ST_DATA_COMPATIBLE_P(VALUE)) {
|
|
st_table *table = RHASH(hash)->ntbl;
|
|
|
|
rb_gc_writebarrier_remember(values);
|
|
RARRAY_PTR_USE(values, ptr, {
|
|
size = st_values_check(table, ptr, size, Qundef);
|
|
});
|
|
rb_ary_set_len(values, size);
|
|
}
|
|
else {
|
|
rb_hash_foreach(hash, values_i, values);
|
|
}
|
|
|
|
return values;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.has_key?(key) -> true or false
|
|
* hsh.include?(key) -> true or false
|
|
* hsh.key?(key) -> true or false
|
|
* hsh.member?(key) -> true or false
|
|
*
|
|
* Returns <code>true</code> if the given key is present in <i>hsh</i>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.has_key?("a") #=> true
|
|
* h.has_key?("z") #=> false
|
|
*
|
|
* Note that <code>include?</code> and <code>member?</code> do not test member
|
|
* equality using <code>==</code> as do other Enumerables.
|
|
*
|
|
* See also Enumerable#include?
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_has_key(VALUE hash, VALUE key)
|
|
{
|
|
if (!RHASH(hash)->ntbl)
|
|
return Qfalse;
|
|
if (st_lookup(RHASH(hash)->ntbl, key, 0)) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
static int
|
|
rb_hash_search_value(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
VALUE *data = (VALUE *)arg;
|
|
|
|
if (rb_equal(value, data[1])) {
|
|
data[0] = Qtrue;
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.has_value?(value) -> true or false
|
|
* hsh.value?(value) -> true or false
|
|
*
|
|
* Returns <code>true</code> if the given value is present for some key
|
|
* in <i>hsh</i>.
|
|
*
|
|
* h = { "a" => 100, "b" => 200 }
|
|
* h.has_value?(100) #=> true
|
|
* h.has_value?(999) #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_has_value(VALUE hash, VALUE val)
|
|
{
|
|
VALUE data[2];
|
|
|
|
data[0] = Qfalse;
|
|
data[1] = val;
|
|
rb_hash_foreach(hash, rb_hash_search_value, (VALUE)data);
|
|
return data[0];
|
|
}
|
|
|
|
struct equal_data {
|
|
VALUE result;
|
|
st_table *tbl;
|
|
int eql;
|
|
};
|
|
|
|
static int
|
|
eql_i(VALUE key, VALUE val1, VALUE arg)
|
|
{
|
|
struct equal_data *data = (struct equal_data *)arg;
|
|
st_data_t val2;
|
|
|
|
if (!st_lookup(data->tbl, key, &val2)) {
|
|
data->result = Qfalse;
|
|
return ST_STOP;
|
|
}
|
|
if (!(data->eql ? rb_eql(val1, (VALUE)val2) : (int)rb_equal(val1, (VALUE)val2))) {
|
|
data->result = Qfalse;
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static VALUE
|
|
recursive_eql(VALUE hash, VALUE dt, int recur)
|
|
{
|
|
struct equal_data *data;
|
|
|
|
if (recur) return Qtrue; /* Subtle! */
|
|
data = (struct equal_data*)dt;
|
|
data->result = Qtrue;
|
|
rb_hash_foreach(hash, eql_i, dt);
|
|
|
|
return data->result;
|
|
}
|
|
|
|
static VALUE
|
|
hash_equal(VALUE hash1, VALUE hash2, int eql)
|
|
{
|
|
struct equal_data data;
|
|
|
|
if (hash1 == hash2) return Qtrue;
|
|
if (!RB_TYPE_P(hash2, T_HASH)) {
|
|
if (!rb_respond_to(hash2, idTo_hash)) {
|
|
return Qfalse;
|
|
}
|
|
if (eql) {
|
|
if (rb_eql(hash2, hash1)) {
|
|
return Qtrue;
|
|
}
|
|
else {
|
|
return Qfalse;
|
|
}
|
|
}
|
|
else {
|
|
return rb_equal(hash2, hash1);
|
|
}
|
|
}
|
|
if (RHASH_SIZE(hash1) != RHASH_SIZE(hash2))
|
|
return Qfalse;
|
|
if (!RHASH(hash1)->ntbl || !RHASH(hash2)->ntbl)
|
|
return Qtrue;
|
|
if (RHASH(hash1)->ntbl->type != RHASH(hash2)->ntbl->type)
|
|
return Qfalse;
|
|
#if 0
|
|
if (!(rb_equal(RHASH_IFNONE(hash1), RHASH_IFNONE(hash2)) &&
|
|
FL_TEST(hash1, HASH_PROC_DEFAULT) == FL_TEST(hash2, HASH_PROC_DEFAULT)))
|
|
return Qfalse;
|
|
#endif
|
|
|
|
data.tbl = RHASH(hash2)->ntbl;
|
|
data.eql = eql;
|
|
return rb_exec_recursive_paired(recursive_eql, hash1, hash2, (VALUE)&data);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh == other_hash -> true or false
|
|
*
|
|
* Equality---Two hashes are equal if they each contain the same number
|
|
* of keys and if each key-value pair is equal to (according to
|
|
* <code>Object#==</code>) the corresponding elements in the other
|
|
* hash.
|
|
*
|
|
* h1 = { "a" => 1, "c" => 2 }
|
|
* h2 = { 7 => 35, "c" => 2, "a" => 1 }
|
|
* h3 = { "a" => 1, "c" => 2, 7 => 35 }
|
|
* h4 = { "a" => 1, "d" => 2, "f" => 35 }
|
|
* h1 == h2 #=> false
|
|
* h2 == h3 #=> true
|
|
* h3 == h4 #=> false
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_equal(VALUE hash1, VALUE hash2)
|
|
{
|
|
return hash_equal(hash1, hash2, FALSE);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hash.eql?(other) -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>hash</i> and <i>other</i> are
|
|
* both hashes with the same content.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_eql(VALUE hash1, VALUE hash2)
|
|
{
|
|
return hash_equal(hash1, hash2, TRUE);
|
|
}
|
|
|
|
static int
|
|
hash_i(VALUE key, VALUE val, VALUE arg)
|
|
{
|
|
st_index_t *hval = (st_index_t *)arg;
|
|
st_index_t hdata[2];
|
|
|
|
hdata[0] = rb_hash(key);
|
|
hdata[1] = rb_hash(val);
|
|
*hval ^= st_hash(hdata, sizeof(hdata), 0);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.hash -> fixnum
|
|
*
|
|
* Compute a hash-code for this hash. Two hashes with the same content
|
|
* will have the same hash code (and will compare using <code>eql?</code>).
|
|
*
|
|
* See also Object#hash.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_hash(VALUE hash)
|
|
{
|
|
st_index_t size = RHASH_SIZE(hash);
|
|
st_index_t hval = rb_hash_start(size);
|
|
hval = rb_hash_uint(hval, (st_index_t)rb_hash_hash);
|
|
if (size) {
|
|
rb_hash_foreach(hash, hash_i, (VALUE)&hval);
|
|
}
|
|
hval = rb_hash_end(hval);
|
|
return INT2FIX(hval);
|
|
}
|
|
|
|
static int
|
|
rb_hash_invert_i(VALUE key, VALUE value, VALUE hash)
|
|
{
|
|
rb_hash_aset(hash, value, key);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.invert -> new_hash
|
|
*
|
|
* Returns a new hash created by using <i>hsh</i>'s values as keys, and
|
|
* the keys as values.
|
|
* If a key with the same value already exists in the <i>hsh</i>, then
|
|
* the last one defined will be used, the earlier value(s) will be discarded.
|
|
*
|
|
* h = { "n" => 100, "m" => 100, "y" => 300, "d" => 200, "a" => 0 }
|
|
* h.invert #=> {0=>"a", 100=>"m", 200=>"d", 300=>"y"}
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_invert(VALUE hash)
|
|
{
|
|
VALUE h = rb_hash_new();
|
|
|
|
rb_hash_foreach(hash, rb_hash_invert_i, h);
|
|
return h;
|
|
}
|
|
|
|
static int
|
|
rb_hash_update_callback(st_data_t *key, st_data_t *value, struct update_arg *arg, int existing)
|
|
{
|
|
if (existing) {
|
|
arg->old_value = *value;
|
|
arg->new_value = arg->arg;
|
|
}
|
|
else {
|
|
arg->new_key = *key;
|
|
arg->new_value = arg->arg;
|
|
}
|
|
*value = arg->arg;
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
NOINSERT_UPDATE_CALLBACK(rb_hash_update_callback);
|
|
|
|
static int
|
|
rb_hash_update_i(VALUE key, VALUE value, VALUE hash)
|
|
{
|
|
RHASH_UPDATE(hash, key, rb_hash_update_callback, value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static int
|
|
rb_hash_update_block_callback(st_data_t *key, st_data_t *value, struct update_arg *arg, int existing)
|
|
{
|
|
VALUE newvalue = (VALUE)arg->arg;
|
|
|
|
if (existing) {
|
|
newvalue = rb_yield_values(3, (VALUE)*key, (VALUE)*value, newvalue);
|
|
arg->old_value = *value;
|
|
arg->new_value = newvalue;
|
|
}
|
|
else {
|
|
arg->new_key = *key;
|
|
arg->new_value = newvalue;
|
|
}
|
|
*value = newvalue;
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
NOINSERT_UPDATE_CALLBACK(rb_hash_update_block_callback);
|
|
|
|
static int
|
|
rb_hash_update_block_i(VALUE key, VALUE value, VALUE hash)
|
|
{
|
|
RHASH_UPDATE(hash, key, rb_hash_update_block_callback, value);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.merge!(other_hash) -> hsh
|
|
* hsh.update(other_hash) -> hsh
|
|
* hsh.merge!(other_hash){|key, oldval, newval| block} -> hsh
|
|
* hsh.update(other_hash){|key, oldval, newval| block} -> hsh
|
|
*
|
|
* Adds the contents of _other_hash_ to _hsh_. If no block is specified,
|
|
* entries with duplicate keys are overwritten with the values from
|
|
* _other_hash_, otherwise the value of each duplicate key is determined by
|
|
* calling the block with the key, its value in _hsh_ and its value in
|
|
* _other_hash_.
|
|
*
|
|
* h1 = { "a" => 100, "b" => 200 }
|
|
* h2 = { "b" => 254, "c" => 300 }
|
|
* h1.merge!(h2) #=> {"a"=>100, "b"=>254, "c"=>300}
|
|
*
|
|
* h1 = { "a" => 100, "b" => 200 }
|
|
* h2 = { "b" => 254, "c" => 300 }
|
|
* h1.merge!(h2) { |key, v1, v2| v1 }
|
|
* #=> {"a"=>100, "b"=>200, "c"=>300}
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_update(VALUE hash1, VALUE hash2)
|
|
{
|
|
rb_hash_modify(hash1);
|
|
hash2 = to_hash(hash2);
|
|
if (rb_block_given_p()) {
|
|
rb_hash_foreach(hash2, rb_hash_update_block_i, hash1);
|
|
}
|
|
else {
|
|
rb_hash_foreach(hash2, rb_hash_update_i, hash1);
|
|
}
|
|
return hash1;
|
|
}
|
|
|
|
struct update_func_arg {
|
|
VALUE hash;
|
|
VALUE value;
|
|
rb_hash_update_func *func;
|
|
};
|
|
|
|
static int
|
|
rb_hash_update_func_callback(st_data_t *key, st_data_t *value, struct update_arg *arg, int existing)
|
|
{
|
|
struct update_func_arg *uf_arg = (struct update_func_arg *)arg->arg;
|
|
VALUE newvalue = uf_arg->value;
|
|
|
|
if (existing) {
|
|
newvalue = (*uf_arg->func)((VALUE)*key, (VALUE)*value, newvalue);
|
|
arg->old_value = *value;
|
|
arg->new_value = newvalue;
|
|
}
|
|
else {
|
|
arg->new_key = *key;
|
|
arg->new_value = newvalue;
|
|
}
|
|
*value = newvalue;
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
NOINSERT_UPDATE_CALLBACK(rb_hash_update_func_callback);
|
|
|
|
static int
|
|
rb_hash_update_func_i(VALUE key, VALUE value, VALUE arg0)
|
|
{
|
|
struct update_func_arg *arg = (struct update_func_arg *)arg0;
|
|
VALUE hash = arg->hash;
|
|
|
|
arg->value = value;
|
|
RHASH_UPDATE(hash, key, rb_hash_update_func_callback, (VALUE)arg);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
VALUE
|
|
rb_hash_update_by(VALUE hash1, VALUE hash2, rb_hash_update_func *func)
|
|
{
|
|
rb_hash_modify(hash1);
|
|
hash2 = to_hash(hash2);
|
|
if (func) {
|
|
struct update_func_arg arg;
|
|
arg.hash = hash1;
|
|
arg.func = func;
|
|
rb_hash_foreach(hash2, rb_hash_update_func_i, (VALUE)&arg);
|
|
}
|
|
else {
|
|
rb_hash_foreach(hash2, rb_hash_update_i, hash1);
|
|
}
|
|
return hash1;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.merge(other_hash) -> new_hash
|
|
* hsh.merge(other_hash){|key, oldval, newval| block} -> new_hash
|
|
*
|
|
* Returns a new hash containing the contents of <i>other_hash</i> and
|
|
* the contents of <i>hsh</i>. If no block is specified, the value for
|
|
* entries with duplicate keys will be that of <i>other_hash</i>. Otherwise
|
|
* the value for each duplicate key is determined by calling the block
|
|
* with the key, its value in <i>hsh</i> and its value in <i>other_hash</i>.
|
|
*
|
|
* h1 = { "a" => 100, "b" => 200 }
|
|
* h2 = { "b" => 254, "c" => 300 }
|
|
* h1.merge(h2) #=> {"a"=>100, "b"=>254, "c"=>300}
|
|
* h1.merge(h2){|key, oldval, newval| newval - oldval}
|
|
* #=> {"a"=>100, "b"=>54, "c"=>300}
|
|
* h1 #=> {"a"=>100, "b"=>200}
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_merge(VALUE hash1, VALUE hash2)
|
|
{
|
|
return rb_hash_update(rb_obj_dup(hash1), hash2);
|
|
}
|
|
|
|
static int
|
|
assoc_cmp(VALUE a, VALUE b)
|
|
{
|
|
return !RTEST(rb_equal(a, b));
|
|
}
|
|
|
|
static VALUE
|
|
lookup2_call(VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
return rb_hash_lookup2(args[0], args[1], Qundef);
|
|
}
|
|
|
|
struct reset_hash_type_arg {
|
|
VALUE hash;
|
|
const struct st_hash_type *orighash;
|
|
};
|
|
|
|
static VALUE
|
|
reset_hash_type(VALUE arg)
|
|
{
|
|
struct reset_hash_type_arg *p = (struct reset_hash_type_arg *)arg;
|
|
RHASH(p->hash)->ntbl->type = p->orighash;
|
|
return Qundef;
|
|
}
|
|
|
|
static int
|
|
assoc_i(VALUE key, VALUE val, VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
|
|
if (RTEST(rb_equal(args[0], key))) {
|
|
args[1] = rb_assoc_new(key, val);
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hash.assoc(obj) -> an_array or nil
|
|
*
|
|
* Searches through the hash comparing _obj_ with the key using <code>==</code>.
|
|
* Returns the key-value pair (two elements array) or +nil+
|
|
* if no match is found. See <code>Array#assoc</code>.
|
|
*
|
|
* h = {"colors" => ["red", "blue", "green"],
|
|
* "letters" => ["a", "b", "c" ]}
|
|
* h.assoc("letters") #=> ["letters", ["a", "b", "c"]]
|
|
* h.assoc("foo") #=> nil
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_assoc(VALUE hash, VALUE key)
|
|
{
|
|
st_table *table;
|
|
const struct st_hash_type *orighash;
|
|
VALUE args[2];
|
|
|
|
if (RHASH_EMPTY_P(hash)) return Qnil;
|
|
table = RHASH(hash)->ntbl;
|
|
orighash = table->type;
|
|
|
|
if (orighash != &identhash) {
|
|
VALUE value;
|
|
struct reset_hash_type_arg ensure_arg;
|
|
struct st_hash_type assochash;
|
|
|
|
assochash.compare = assoc_cmp;
|
|
assochash.hash = orighash->hash;
|
|
table->type = &assochash;
|
|
args[0] = hash;
|
|
args[1] = key;
|
|
ensure_arg.hash = hash;
|
|
ensure_arg.orighash = orighash;
|
|
value = rb_ensure(lookup2_call, (VALUE)&args, reset_hash_type, (VALUE)&ensure_arg);
|
|
if (value != Qundef) return rb_assoc_new(key, value);
|
|
}
|
|
|
|
args[0] = key;
|
|
args[1] = Qnil;
|
|
rb_hash_foreach(hash, assoc_i, (VALUE)args);
|
|
return args[1];
|
|
}
|
|
|
|
static int
|
|
rassoc_i(VALUE key, VALUE val, VALUE arg)
|
|
{
|
|
VALUE *args = (VALUE *)arg;
|
|
|
|
if (RTEST(rb_equal(args[0], val))) {
|
|
args[1] = rb_assoc_new(key, val);
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hash.rassoc(obj) -> an_array or nil
|
|
*
|
|
* Searches through the hash comparing _obj_ with the value using <code>==</code>.
|
|
* Returns the first key-value pair (two-element array) that matches. See
|
|
* also <code>Array#rassoc</code>.
|
|
*
|
|
* a = {1=> "one", 2 => "two", 3 => "three", "ii" => "two"}
|
|
* a.rassoc("two") #=> [2, "two"]
|
|
* a.rassoc("four") #=> nil
|
|
*/
|
|
|
|
VALUE
|
|
rb_hash_rassoc(VALUE hash, VALUE obj)
|
|
{
|
|
VALUE args[2];
|
|
|
|
args[0] = obj;
|
|
args[1] = Qnil;
|
|
rb_hash_foreach(hash, rassoc_i, (VALUE)args);
|
|
return args[1];
|
|
}
|
|
|
|
static int
|
|
flatten_i(VALUE key, VALUE val, VALUE ary)
|
|
{
|
|
VALUE pair[2];
|
|
|
|
pair[0] = key;
|
|
pair[1] = val;
|
|
rb_ary_cat(ary, pair, 2);
|
|
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hash.flatten -> an_array
|
|
* hash.flatten(level) -> an_array
|
|
*
|
|
* Returns a new array that is a one-dimensional flattening of this
|
|
* hash. That is, for every key or value that is an array, extract
|
|
* its elements into the new array. Unlike Array#flatten, this
|
|
* method does not flatten recursively by default. The optional
|
|
* <i>level</i> argument determines the level of recursion to flatten.
|
|
*
|
|
* a = {1=> "one", 2 => [2,"two"], 3 => "three"}
|
|
* a.flatten # => [1, "one", 2, [2, "two"], 3, "three"]
|
|
* a.flatten(2) # => [1, "one", 2, 2, "two", 3, "three"]
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_flatten(int argc, VALUE *argv, VALUE hash)
|
|
{
|
|
VALUE ary;
|
|
|
|
if (argc) {
|
|
int level = NUM2INT(*argv);
|
|
if (level == 0) return rb_hash_to_a(hash);
|
|
|
|
ary = rb_ary_new_capa(RHASH_SIZE(hash) * 2);
|
|
rb_hash_foreach(hash, flatten_i, ary);
|
|
if (level - 1 > 0) {
|
|
*argv = INT2FIX(level - 1);
|
|
rb_funcall2(ary, id_flatten_bang, argc, argv);
|
|
}
|
|
else if (level < 0) {
|
|
rb_funcall2(ary, id_flatten_bang, 0, 0);
|
|
}
|
|
}
|
|
else {
|
|
ary = rb_ary_new_capa(RHASH_SIZE(hash) * 2);
|
|
rb_hash_foreach(hash, flatten_i, ary);
|
|
}
|
|
|
|
return ary;
|
|
}
|
|
|
|
static VALUE rb_hash_compare_by_id_p(VALUE hash);
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.compare_by_identity -> hsh
|
|
*
|
|
* Makes <i>hsh</i> compare its keys by their identity, i.e. it
|
|
* will consider exact same objects as same keys.
|
|
*
|
|
* h1 = { "a" => 100, "b" => 200, :c => "c" }
|
|
* h1["a"] #=> 100
|
|
* h1.compare_by_identity
|
|
* h1.compare_by_identity? #=> true
|
|
* h1["a".dup] #=> nil # different objects.
|
|
* h1[:c] #=> "c" # same symbols are all same.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_compare_by_id(VALUE hash)
|
|
{
|
|
if (rb_hash_compare_by_id_p(hash)) return hash;
|
|
rb_hash_modify(hash);
|
|
RHASH(hash)->ntbl->type = &identhash;
|
|
rb_hash_rehash(hash);
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.compare_by_identity? -> true or false
|
|
*
|
|
* Returns <code>true</code> if <i>hsh</i> will compare its keys by
|
|
* their identity. Also see <code>Hash#compare_by_identity</code>.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_compare_by_id_p(VALUE hash)
|
|
{
|
|
if (!RHASH(hash)->ntbl)
|
|
return Qfalse;
|
|
if (RHASH(hash)->ntbl->type == &identhash) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
VALUE
|
|
rb_ident_hash_new(void)
|
|
{
|
|
VALUE hash = rb_hash_new();
|
|
RHASH(hash)->ntbl = st_init_table(&identhash);
|
|
return hash;
|
|
}
|
|
|
|
st_table *
|
|
rb_init_identtable(void)
|
|
{
|
|
return st_init_table(&identhash);
|
|
}
|
|
|
|
st_table *
|
|
rb_init_identtable_with_size(st_index_t size)
|
|
{
|
|
return st_init_table_with_size(&identhash, size);
|
|
}
|
|
|
|
static int
|
|
any_p_i(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
VALUE ret = rb_yield(rb_assoc_new(key, value));
|
|
if (RTEST(ret)) {
|
|
*(VALUE *)arg = Qtrue;
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static int
|
|
any_p_i_fast(VALUE key, VALUE value, VALUE arg)
|
|
{
|
|
VALUE ret = rb_yield_values(2, key, value);
|
|
if (RTEST(ret)) {
|
|
*(VALUE *)arg = Qtrue;
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hsh.any? [{ |(key, value)| block }] -> true or false
|
|
*
|
|
* See also Enumerable#any?
|
|
*/
|
|
|
|
static VALUE
|
|
rb_hash_any_p(VALUE hash)
|
|
{
|
|
VALUE ret = Qfalse;
|
|
|
|
if (RHASH_EMPTY_P(hash)) return Qfalse;
|
|
if (!rb_block_given_p()) {
|
|
/* yields pairs, never false */
|
|
return Qtrue;
|
|
}
|
|
if (rb_block_arity() > 1)
|
|
rb_hash_foreach(hash, any_p_i_fast, (VALUE)&ret);
|
|
else
|
|
rb_hash_foreach(hash, any_p_i, (VALUE)&ret);
|
|
return ret;
|
|
}
|
|
|
|
static int path_tainted = -1;
|
|
|
|
static char **origenviron;
|
|
#ifdef _WIN32
|
|
#define GET_ENVIRON(e) ((e) = rb_w32_get_environ())
|
|
#define FREE_ENVIRON(e) rb_w32_free_environ(e)
|
|
static char **my_environ;
|
|
#undef environ
|
|
#define environ my_environ
|
|
#undef getenv
|
|
static inline char *
|
|
w32_getenv(const char *name)
|
|
{
|
|
static int binary = -1;
|
|
static int locale = -1;
|
|
if (binary < 0) {
|
|
binary = rb_ascii8bit_encindex();
|
|
locale = rb_locale_encindex();
|
|
}
|
|
return locale == binary ? rb_w32_getenv(name) : rb_w32_ugetenv(name);
|
|
}
|
|
#define getenv(n) w32_getenv(n)
|
|
#elif defined(__APPLE__)
|
|
#undef environ
|
|
#define environ (*_NSGetEnviron())
|
|
#define GET_ENVIRON(e) (e)
|
|
#define FREE_ENVIRON(e)
|
|
#else
|
|
extern char **environ;
|
|
#define GET_ENVIRON(e) (e)
|
|
#define FREE_ENVIRON(e)
|
|
#endif
|
|
#ifdef ENV_IGNORECASE
|
|
#define ENVMATCH(s1, s2) (STRCASECMP((s1), (s2)) == 0)
|
|
#define ENVNMATCH(s1, s2, n) (STRNCASECMP((s1), (s2), (n)) == 0)
|
|
#else
|
|
#define ENVMATCH(n1, n2) (strcmp((n1), (n2)) == 0)
|
|
#define ENVNMATCH(s1, s2, n) (memcmp((s1), (s2), (n)) == 0)
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
static VALUE
|
|
env_str_transcode(VALUE str, rb_encoding *enc)
|
|
{
|
|
return rb_str_conv_enc_opts(str, rb_utf8_encoding(), enc,
|
|
ECONV_INVALID_REPLACE | ECONV_UNDEF_REPLACE, Qnil);
|
|
}
|
|
#endif
|
|
|
|
static VALUE
|
|
env_str_new(const char *ptr, long len)
|
|
{
|
|
#ifdef _WIN32
|
|
VALUE str = env_str_transcode(rb_str_new(ptr, len), rb_locale_encoding());
|
|
#else
|
|
VALUE str = rb_locale_str_new(ptr, len);
|
|
#endif
|
|
|
|
rb_obj_freeze(str);
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
env_path_str_new(const char *ptr)
|
|
{
|
|
#ifdef _WIN32
|
|
VALUE str = env_str_transcode(rb_str_new_cstr(ptr), rb_filesystem_encoding());
|
|
#else
|
|
VALUE str = rb_filesystem_str_new_cstr(ptr);
|
|
#endif
|
|
|
|
rb_obj_freeze(str);
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
env_str_new2(const char *ptr)
|
|
{
|
|
if (!ptr) return Qnil;
|
|
return env_str_new(ptr, strlen(ptr));
|
|
}
|
|
|
|
static void *
|
|
get_env_cstr(VALUE str, const char *name)
|
|
{
|
|
char *var;
|
|
rb_encoding *enc = rb_enc_get(str);
|
|
if (!rb_enc_asciicompat(enc)) {
|
|
rb_raise(rb_eArgError, "bad environment variable %s: ASCII incompatible encoding: %s",
|
|
name, rb_enc_name(enc));
|
|
}
|
|
var = RSTRING_PTR(str);
|
|
if (memchr(var, '\0', RSTRING_LEN(str))) {
|
|
rb_raise(rb_eArgError, "bad environment variable %s: contains null byte", name);
|
|
}
|
|
return var;
|
|
}
|
|
|
|
#define get_env_ptr(var, val) \
|
|
(var = get_env_cstr(val, #var))
|
|
|
|
static inline const char *
|
|
env_name(volatile VALUE *s)
|
|
{
|
|
const char *name;
|
|
SafeStringValue(*s);
|
|
get_env_ptr(name, *s);
|
|
return name;
|
|
}
|
|
|
|
#define env_name(s) env_name(&(s))
|
|
|
|
static VALUE
|
|
env_delete(VALUE obj, VALUE name)
|
|
{
|
|
const char *nam, *val;
|
|
|
|
nam = env_name(name);
|
|
val = getenv(nam);
|
|
if (val) {
|
|
VALUE value = env_str_new2(val);
|
|
|
|
ruby_setenv(nam, 0);
|
|
if (ENVMATCH(nam, PATH_ENV)) {
|
|
path_tainted = 0;
|
|
}
|
|
return value;
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.delete(name) -> value
|
|
* ENV.delete(name) { |name| } -> value
|
|
*
|
|
* Deletes the environment variable with +name+ and returns the value of the
|
|
* variable. If a block is given it will be called when the named environment
|
|
* does not exist.
|
|
*/
|
|
static VALUE
|
|
env_delete_m(VALUE obj, VALUE name)
|
|
{
|
|
VALUE val;
|
|
|
|
val = env_delete(obj, name);
|
|
if (NIL_P(val) && rb_block_given_p()) rb_yield(name);
|
|
return val;
|
|
}
|
|
|
|
static int env_path_tainted(const char *);
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV[name] -> value
|
|
*
|
|
* Retrieves the +value+ for environment variable +name+ as a String. Returns
|
|
* +nil+ if the named variable does not exist.
|
|
*/
|
|
static VALUE
|
|
rb_f_getenv(VALUE obj, VALUE name)
|
|
{
|
|
const char *nam, *env;
|
|
|
|
nam = env_name(name);
|
|
env = getenv(nam);
|
|
if (env) {
|
|
if (ENVMATCH(nam, PATH_ENV) && !env_path_tainted(env)) {
|
|
return env_path_str_new(env);
|
|
}
|
|
return env_str_new2(env);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* :yield: missing_name
|
|
* call-seq:
|
|
* ENV.fetch(name) -> value
|
|
* ENV.fetch(name, default) -> value
|
|
* ENV.fetch(name) { |missing_name| ... } -> value
|
|
*
|
|
* Retrieves the environment variable +name+.
|
|
*
|
|
* If the given name does not exist and neither +default+ nor a block a
|
|
* provided an IndexError is raised. If a block is given it is called with
|
|
* the missing name to provide a value. If a default value is given it will
|
|
* be returned when no block is given.
|
|
*/
|
|
static VALUE
|
|
env_fetch(int argc, VALUE *argv)
|
|
{
|
|
VALUE key;
|
|
long block_given;
|
|
const char *nam, *env;
|
|
|
|
rb_check_arity(argc, 1, 2);
|
|
key = argv[0];
|
|
block_given = rb_block_given_p();
|
|
if (block_given && argc == 2) {
|
|
rb_warn("block supersedes default value argument");
|
|
}
|
|
nam = env_name(key);
|
|
env = getenv(nam);
|
|
if (!env) {
|
|
if (block_given) return rb_yield(key);
|
|
if (argc == 1) {
|
|
rb_raise(rb_eKeyError, "key not found: \"%"PRIsVALUE"\"", key);
|
|
}
|
|
return argv[1];
|
|
}
|
|
if (ENVMATCH(nam, PATH_ENV) && !env_path_tainted(env))
|
|
return env_path_str_new(env);
|
|
return env_str_new2(env);
|
|
}
|
|
|
|
static void
|
|
path_tainted_p(const char *path)
|
|
{
|
|
path_tainted = rb_path_check(path)?0:1;
|
|
}
|
|
|
|
static int
|
|
env_path_tainted(const char *path)
|
|
{
|
|
if (path_tainted < 0) {
|
|
path_tainted_p(path);
|
|
}
|
|
return path_tainted;
|
|
}
|
|
|
|
int
|
|
rb_env_path_tainted(void)
|
|
{
|
|
if (path_tainted < 0) {
|
|
path_tainted_p(getenv(PATH_ENV));
|
|
}
|
|
return path_tainted;
|
|
}
|
|
|
|
#if defined(_WIN32) || (defined(HAVE_SETENV) && defined(HAVE_UNSETENV))
|
|
#elif defined __sun
|
|
static int
|
|
in_origenv(const char *str)
|
|
{
|
|
char **env;
|
|
for (env = origenviron; *env; ++env) {
|
|
if (*env == str) return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
#else
|
|
static int
|
|
envix(const char *nam)
|
|
{
|
|
register int i, len = strlen(nam);
|
|
char **env;
|
|
|
|
env = GET_ENVIRON(environ);
|
|
for (i = 0; env[i]; i++) {
|
|
if (ENVNMATCH(env[i],nam,len) && env[i][len] == '=')
|
|
break; /* memcmp must come first to avoid */
|
|
} /* potential SEGV's */
|
|
FREE_ENVIRON(environ);
|
|
return i;
|
|
}
|
|
#endif
|
|
|
|
#if defined(_WIN32)
|
|
static size_t
|
|
getenvsize(const char* p)
|
|
{
|
|
const char* porg = p;
|
|
while (*p++) p += strlen(p) + 1;
|
|
return p - porg + 1;
|
|
}
|
|
static size_t
|
|
getenvblocksize(void)
|
|
{
|
|
return (rb_w32_osver() >= 5) ? 32767 : 5120;
|
|
}
|
|
#endif
|
|
|
|
#if defined(_WIN32) || \
|
|
(defined(__sun) && !(defined(HAVE_SETENV) && defined(HAVE_UNSETENV)))
|
|
|
|
NORETURN(static void invalid_envname(const char *name));
|
|
|
|
static void
|
|
invalid_envname(const char *name)
|
|
{
|
|
rb_syserr_fail_str(EINVAL, rb_sprintf("ruby_setenv(%s)", name));
|
|
}
|
|
|
|
static const char *
|
|
check_envname(const char *name)
|
|
{
|
|
if (strchr(name, '=')) {
|
|
invalid_envname(name);
|
|
}
|
|
return name;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
ruby_setenv(const char *name, const char *value)
|
|
{
|
|
#if defined(_WIN32)
|
|
VALUE buf;
|
|
int failed = 0;
|
|
check_envname(name);
|
|
if (value) {
|
|
char* p = GetEnvironmentStringsA();
|
|
size_t n;
|
|
if (!p) goto fail; /* never happen */
|
|
n = strlen(name) + 2 + strlen(value) + getenvsize(p);
|
|
FreeEnvironmentStringsA(p);
|
|
if (n >= getenvblocksize()) {
|
|
goto fail; /* 2 for '=' & '\0' */
|
|
}
|
|
buf = rb_sprintf("%s=%s", name, value);
|
|
}
|
|
else {
|
|
buf = rb_sprintf("%s=", name);
|
|
}
|
|
failed = putenv(RSTRING_PTR(buf));
|
|
/* even if putenv() failed, clean up and try to delete the
|
|
* variable from the system area. */
|
|
rb_str_resize(buf, 0);
|
|
if (!value || !*value) {
|
|
/* putenv() doesn't handle empty value */
|
|
if (!SetEnvironmentVariable(name, value) &&
|
|
GetLastError() != ERROR_ENVVAR_NOT_FOUND) goto fail;
|
|
}
|
|
if (failed) {
|
|
fail:
|
|
invalid_envname(name);
|
|
}
|
|
#elif defined(HAVE_SETENV) && defined(HAVE_UNSETENV)
|
|
#undef setenv
|
|
#undef unsetenv
|
|
if (value) {
|
|
if (setenv(name, value, 1))
|
|
rb_sys_fail_str(rb_sprintf("setenv(%s)", name));
|
|
}
|
|
else {
|
|
#ifdef VOID_UNSETENV
|
|
unsetenv(name);
|
|
#else
|
|
if (unsetenv(name))
|
|
rb_sys_fail_str(rb_sprintf("unsetenv(%s)", name));
|
|
#endif
|
|
}
|
|
#elif defined __sun
|
|
/* Solaris 9 (or earlier) does not have setenv(3C) and unsetenv(3C). */
|
|
/* The below code was tested on Solaris 10 by:
|
|
% ./configure ac_cv_func_setenv=no ac_cv_func_unsetenv=no
|
|
*/
|
|
size_t len, mem_size;
|
|
char **env_ptr, *str, *mem_ptr;
|
|
|
|
check_envname(name);
|
|
len = strlen(name);
|
|
if (value) {
|
|
mem_size = len + strlen(value) + 2;
|
|
mem_ptr = malloc(mem_size);
|
|
if (mem_ptr == NULL)
|
|
rb_sys_fail_str(rb_sprintf("malloc("PRIuSIZE")", mem_size));
|
|
snprintf(mem_ptr, mem_size, "%s=%s", name, value);
|
|
}
|
|
for (env_ptr = GET_ENVIRON(environ); (str = *env_ptr) != 0; ++env_ptr) {
|
|
if (!strncmp(str, name, len) && str[len] == '=') {
|
|
if (!in_origenv(str)) free(str);
|
|
while ((env_ptr[0] = env_ptr[1]) != 0) env_ptr++;
|
|
break;
|
|
}
|
|
}
|
|
if (value) {
|
|
if (putenv(mem_ptr)) {
|
|
free(mem_ptr);
|
|
rb_sys_fail_str(rb_sprintf("putenv(%s)", name));
|
|
}
|
|
}
|
|
#else /* WIN32 */
|
|
size_t len;
|
|
int i;
|
|
|
|
i=envix(name); /* where does it go? */
|
|
|
|
if (environ == origenviron) { /* need we copy environment? */
|
|
int j;
|
|
int max;
|
|
char **tmpenv;
|
|
|
|
for (max = i; environ[max]; max++) ;
|
|
tmpenv = ALLOC_N(char*, max+2);
|
|
for (j=0; j<max; j++) /* copy environment */
|
|
tmpenv[j] = ruby_strdup(environ[j]);
|
|
tmpenv[max] = 0;
|
|
environ = tmpenv; /* tell exec where it is now */
|
|
}
|
|
if (environ[i]) {
|
|
char **envp = origenviron;
|
|
while (*envp && *envp != environ[i]) envp++;
|
|
if (!*envp)
|
|
xfree(environ[i]);
|
|
if (!value) {
|
|
while (environ[i]) {
|
|
environ[i] = environ[i+1];
|
|
i++;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
else { /* does not exist yet */
|
|
if (!value) return;
|
|
REALLOC_N(environ, char*, i+2); /* just expand it a bit */
|
|
environ[i+1] = 0; /* make sure it's null terminated */
|
|
}
|
|
len = strlen(name) + strlen(value) + 2;
|
|
environ[i] = ALLOC_N(char, len);
|
|
snprintf(environ[i],len,"%s=%s",name,value); /* all that work just for this */
|
|
#endif /* WIN32 */
|
|
}
|
|
|
|
void
|
|
ruby_unsetenv(const char *name)
|
|
{
|
|
ruby_setenv(name, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV[name] = value
|
|
* ENV.store(name, value) -> value
|
|
*
|
|
* Sets the environment variable +name+ to +value+. If the value given is
|
|
* +nil+ the environment variable is deleted.
|
|
* +name+ must be a string.
|
|
*
|
|
*/
|
|
static VALUE
|
|
env_aset(VALUE obj, VALUE nm, VALUE val)
|
|
{
|
|
char *name, *value;
|
|
|
|
if (NIL_P(val)) {
|
|
env_delete(obj, nm);
|
|
return Qnil;
|
|
}
|
|
SafeStringValue(nm);
|
|
SafeStringValue(val);
|
|
/* nm can be modified in `val.to_str`, don't get `name` before
|
|
* check for `val` */
|
|
get_env_ptr(name, nm);
|
|
get_env_ptr(value, val);
|
|
|
|
ruby_setenv(name, value);
|
|
if (ENVMATCH(name, PATH_ENV)) {
|
|
if (OBJ_TAINTED(val)) {
|
|
/* already tainted, no check */
|
|
path_tainted = 1;
|
|
return val;
|
|
}
|
|
else {
|
|
path_tainted_p(value);
|
|
}
|
|
}
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.keys -> Array
|
|
*
|
|
* Returns every environment variable name in an Array
|
|
*/
|
|
static VALUE
|
|
env_keys(void)
|
|
{
|
|
char **env;
|
|
VALUE ary;
|
|
|
|
ary = rb_ary_new();
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
rb_ary_push(ary, env_str_new(*env, s-*env));
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return ary;
|
|
}
|
|
|
|
static VALUE
|
|
rb_env_size(VALUE ehash, VALUE args, VALUE eobj)
|
|
{
|
|
char **env;
|
|
long cnt = 0;
|
|
|
|
env = GET_ENVIRON(environ);
|
|
for (; *env ; ++env) {
|
|
if (strchr(*env, '=')) {
|
|
cnt++;
|
|
}
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return LONG2FIX(cnt);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.each_key { |name| } -> Hash
|
|
* ENV.each_key -> Enumerator
|
|
*
|
|
* Yields each environment variable name.
|
|
*
|
|
* An Enumerator is returned if no block is given.
|
|
*/
|
|
static VALUE
|
|
env_each_key(VALUE ehash)
|
|
{
|
|
VALUE keys;
|
|
long i;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
keys = env_keys();
|
|
for (i=0; i<RARRAY_LEN(keys); i++) {
|
|
rb_yield(RARRAY_AREF(keys, i));
|
|
}
|
|
return ehash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.values -> Array
|
|
*
|
|
* Returns every environment variable value as an Array
|
|
*/
|
|
static VALUE
|
|
env_values(void)
|
|
{
|
|
VALUE ary;
|
|
char **env;
|
|
|
|
ary = rb_ary_new();
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
rb_ary_push(ary, env_str_new2(s+1));
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.each_value { |value| } -> Hash
|
|
* ENV.each_value -> Enumerator
|
|
*
|
|
* Yields each environment variable +value+.
|
|
*
|
|
* An Enumerator is returned if no block was given.
|
|
*/
|
|
static VALUE
|
|
env_each_value(VALUE ehash)
|
|
{
|
|
VALUE values;
|
|
long i;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
values = env_values();
|
|
for (i=0; i<RARRAY_LEN(values); i++) {
|
|
rb_yield(RARRAY_AREF(values, i));
|
|
}
|
|
return ehash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.each { |name, value| } -> Hash
|
|
* ENV.each -> Enumerator
|
|
* ENV.each_pair { |name, value| } -> Hash
|
|
* ENV.each_pair -> Enumerator
|
|
*
|
|
* Yields each environment variable +name+ and +value+.
|
|
*
|
|
* If no block is given an Enumerator is returned.
|
|
*/
|
|
static VALUE
|
|
env_each_pair(VALUE ehash)
|
|
{
|
|
char **env;
|
|
VALUE ary;
|
|
long i;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
|
|
ary = rb_ary_new();
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
rb_ary_push(ary, env_str_new(*env, s-*env));
|
|
rb_ary_push(ary, env_str_new2(s+1));
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
|
|
if (rb_block_arity() > 1) {
|
|
for (i=0; i<RARRAY_LEN(ary); i+=2) {
|
|
rb_yield_values(2, RARRAY_AREF(ary, i), RARRAY_AREF(ary, i+1));
|
|
}
|
|
}
|
|
else {
|
|
for (i=0; i<RARRAY_LEN(ary); i+=2) {
|
|
rb_yield(rb_assoc_new(RARRAY_AREF(ary, i), RARRAY_AREF(ary, i+1)));
|
|
}
|
|
}
|
|
return ehash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.reject! { |name, value| } -> ENV or nil
|
|
* ENV.reject! -> Enumerator
|
|
*
|
|
* Equivalent to ENV#delete_if but returns +nil+ if no changes were made.
|
|
*
|
|
* Returns an Enumerator if no block was given.
|
|
*/
|
|
static VALUE
|
|
env_reject_bang(VALUE ehash)
|
|
{
|
|
VALUE keys;
|
|
long i;
|
|
int del = 0;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
keys = env_keys();
|
|
RBASIC_CLEAR_CLASS(keys);
|
|
for (i=0; i<RARRAY_LEN(keys); i++) {
|
|
VALUE val = rb_f_getenv(Qnil, RARRAY_AREF(keys, i));
|
|
if (!NIL_P(val)) {
|
|
if (RTEST(rb_yield_values(2, RARRAY_AREF(keys, i), val))) {
|
|
FL_UNSET(RARRAY_AREF(keys, i), FL_TAINT);
|
|
env_delete(Qnil, RARRAY_AREF(keys, i));
|
|
del++;
|
|
}
|
|
}
|
|
}
|
|
RB_GC_GUARD(keys);
|
|
if (del == 0) return Qnil;
|
|
return envtbl;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.delete_if { |name, value| } -> Hash
|
|
* ENV.delete_if -> Enumerator
|
|
*
|
|
* Deletes every environment variable for which the block evaluates to +true+.
|
|
*
|
|
* If no block is given an enumerator is returned instead.
|
|
*/
|
|
static VALUE
|
|
env_delete_if(VALUE ehash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
env_reject_bang(ehash);
|
|
return envtbl;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.values_at(name, ...) -> Array
|
|
*
|
|
* Returns an array containing the environment variable values associated with
|
|
* the given names. See also ENV.select.
|
|
*/
|
|
static VALUE
|
|
env_values_at(int argc, VALUE *argv)
|
|
{
|
|
VALUE result;
|
|
long i;
|
|
|
|
result = rb_ary_new();
|
|
for (i=0; i<argc; i++) {
|
|
rb_ary_push(result, rb_f_getenv(Qnil, argv[i]));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.select { |name, value| } -> Hash
|
|
* ENV.select -> Enumerator
|
|
*
|
|
* Returns a copy of the environment for entries where the block returns true.
|
|
*
|
|
* Returns an Enumerator if no block was given.
|
|
*/
|
|
static VALUE
|
|
env_select(VALUE ehash)
|
|
{
|
|
VALUE result;
|
|
VALUE keys;
|
|
long i;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
result = rb_hash_new();
|
|
keys = env_keys();
|
|
for (i = 0; i < RARRAY_LEN(keys); ++i) {
|
|
VALUE key = RARRAY_AREF(keys, i);
|
|
VALUE val = rb_f_getenv(Qnil, key);
|
|
if (!NIL_P(val)) {
|
|
if (RTEST(rb_yield_values(2, key, val))) {
|
|
rb_hash_aset(result, key, val);
|
|
}
|
|
}
|
|
}
|
|
RB_GC_GUARD(keys);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.select! { |name, value| } -> ENV or nil
|
|
* ENV.select! -> Enumerator
|
|
*
|
|
* Equivalent to ENV#keep_if but returns +nil+ if no changes were made.
|
|
*/
|
|
static VALUE
|
|
env_select_bang(VALUE ehash)
|
|
{
|
|
VALUE keys;
|
|
long i;
|
|
int del = 0;
|
|
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
keys = env_keys();
|
|
RBASIC_CLEAR_CLASS(keys);
|
|
for (i=0; i<RARRAY_LEN(keys); i++) {
|
|
VALUE val = rb_f_getenv(Qnil, RARRAY_AREF(keys, i));
|
|
if (!NIL_P(val)) {
|
|
if (!RTEST(rb_yield_values(2, RARRAY_AREF(keys, i), val))) {
|
|
FL_UNSET(RARRAY_AREF(keys, i), FL_TAINT);
|
|
env_delete(Qnil, RARRAY_AREF(keys, i));
|
|
del++;
|
|
}
|
|
}
|
|
}
|
|
RB_GC_GUARD(keys);
|
|
if (del == 0) return Qnil;
|
|
return envtbl;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.keep_if { |name, value| } -> Hash
|
|
* ENV.keep_if -> Enumerator
|
|
*
|
|
* Deletes every environment variable where the block evaluates to +false+.
|
|
*
|
|
* Returns an enumerator if no block was given.
|
|
*/
|
|
static VALUE
|
|
env_keep_if(VALUE ehash)
|
|
{
|
|
RETURN_SIZED_ENUMERATOR(ehash, 0, 0, rb_env_size);
|
|
env_select_bang(ehash);
|
|
return envtbl;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.clear
|
|
*
|
|
* Removes every environment variable.
|
|
*/
|
|
VALUE
|
|
rb_env_clear(void)
|
|
{
|
|
VALUE keys;
|
|
long i;
|
|
|
|
keys = env_keys();
|
|
for (i=0; i<RARRAY_LEN(keys); i++) {
|
|
VALUE val = rb_f_getenv(Qnil, RARRAY_AREF(keys, i));
|
|
if (!NIL_P(val)) {
|
|
env_delete(Qnil, RARRAY_AREF(keys, i));
|
|
}
|
|
}
|
|
RB_GC_GUARD(keys);
|
|
return envtbl;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.to_s -> "ENV"
|
|
*
|
|
* Returns "ENV"
|
|
*/
|
|
static VALUE
|
|
env_to_s(void)
|
|
{
|
|
return rb_usascii_str_new2("ENV");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.inspect -> string
|
|
*
|
|
* Returns the contents of the environment as a String.
|
|
*/
|
|
static VALUE
|
|
env_inspect(void)
|
|
{
|
|
char **env;
|
|
VALUE str, i;
|
|
|
|
str = rb_str_buf_new2("{");
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
|
|
if (env != environ) {
|
|
rb_str_buf_cat2(str, ", ");
|
|
}
|
|
if (s) {
|
|
rb_str_buf_cat2(str, "\"");
|
|
rb_str_buf_cat(str, *env, s-*env);
|
|
rb_str_buf_cat2(str, "\"=>");
|
|
i = rb_inspect(rb_str_new2(s+1));
|
|
rb_str_buf_append(str, i);
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
rb_str_buf_cat2(str, "}");
|
|
OBJ_TAINT(str);
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.to_a -> Array
|
|
*
|
|
* Converts the environment variables into an array of names and value arrays.
|
|
*
|
|
* ENV.to_a # => [["TERM", "xterm-color"], ["SHELL", "/bin/bash"], ...]
|
|
*
|
|
*/
|
|
static VALUE
|
|
env_to_a(void)
|
|
{
|
|
char **env;
|
|
VALUE ary;
|
|
|
|
ary = rb_ary_new();
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
rb_ary_push(ary, rb_assoc_new(env_str_new(*env, s-*env),
|
|
env_str_new2(s+1)));
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.rehash
|
|
*
|
|
* Re-hashing the environment variables does nothing. It is provided for
|
|
* compatibility with Hash.
|
|
*/
|
|
static VALUE
|
|
env_none(void)
|
|
{
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.length
|
|
* ENV.size
|
|
*
|
|
* Returns the number of environment variables.
|
|
*/
|
|
static VALUE
|
|
env_size(void)
|
|
{
|
|
int i;
|
|
char **env;
|
|
|
|
env = GET_ENVIRON(environ);
|
|
for (i=0; env[i]; i++)
|
|
;
|
|
FREE_ENVIRON(environ);
|
|
return INT2FIX(i);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.empty? -> true or false
|
|
*
|
|
* Returns true when there are no environment variables
|
|
*/
|
|
static VALUE
|
|
env_empty_p(void)
|
|
{
|
|
char **env;
|
|
|
|
env = GET_ENVIRON(environ);
|
|
if (env[0] == 0) {
|
|
FREE_ENVIRON(environ);
|
|
return Qtrue;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.key?(name) -> true or false
|
|
* ENV.include?(name) -> true or false
|
|
* ENV.has_key?(name) -> true or false
|
|
* ENV.member?(name) -> true or false
|
|
*
|
|
* Returns +true+ if there is an environment variable with the given +name+.
|
|
*/
|
|
static VALUE
|
|
env_has_key(VALUE env, VALUE key)
|
|
{
|
|
const char *s;
|
|
|
|
s = env_name(key);
|
|
if (getenv(s)) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.assoc(name) -> Array or nil
|
|
*
|
|
* Returns an Array of the name and value of the environment variable with
|
|
* +name+ or +nil+ if the name cannot be found.
|
|
*/
|
|
static VALUE
|
|
env_assoc(VALUE env, VALUE key)
|
|
{
|
|
const char *s, *e;
|
|
|
|
s = env_name(key);
|
|
e = getenv(s);
|
|
if (e) return rb_assoc_new(key, rb_tainted_str_new2(e));
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.value?(value) -> true or false
|
|
* ENV.has_value?(value) -> true or false
|
|
*
|
|
* Returns +true+ if there is an environment variable with the given +value+.
|
|
*/
|
|
static VALUE
|
|
env_has_value(VALUE dmy, VALUE obj)
|
|
{
|
|
char **env;
|
|
|
|
obj = rb_check_string_type(obj);
|
|
if (NIL_P(obj)) return Qnil;
|
|
rb_check_safe_obj(obj);
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s++) {
|
|
long len = strlen(s);
|
|
if (RSTRING_LEN(obj) == len && strncmp(s, RSTRING_PTR(obj), len) == 0) {
|
|
FREE_ENVIRON(environ);
|
|
return Qtrue;
|
|
}
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.rassoc(value)
|
|
*
|
|
* Returns an Array of the name and value of the environment variable with
|
|
* +value+ or +nil+ if the value cannot be found.
|
|
*/
|
|
static VALUE
|
|
env_rassoc(VALUE dmy, VALUE obj)
|
|
{
|
|
char **env;
|
|
|
|
obj = rb_check_string_type(obj);
|
|
if (NIL_P(obj)) return Qnil;
|
|
rb_check_safe_obj(obj);
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s++) {
|
|
long len = strlen(s);
|
|
if (RSTRING_LEN(obj) == len && strncmp(s, RSTRING_PTR(obj), len) == 0) {
|
|
VALUE result = rb_assoc_new(rb_tainted_str_new(*env, s-*env-1), obj);
|
|
FREE_ENVIRON(environ);
|
|
return result;
|
|
}
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.key(value) -> name
|
|
*
|
|
* Returns the name of the environment variable with +value+. If the value is
|
|
* not found +nil+ is returned.
|
|
*/
|
|
static VALUE
|
|
env_key(VALUE dmy, VALUE value)
|
|
{
|
|
char **env;
|
|
VALUE str;
|
|
|
|
SafeStringValue(value);
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s++) {
|
|
long len = strlen(s);
|
|
if (RSTRING_LEN(value) == len && strncmp(s, RSTRING_PTR(value), len) == 0) {
|
|
str = env_str_new(*env, s-*env-1);
|
|
FREE_ENVIRON(environ);
|
|
return str;
|
|
}
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.index(value) -> key
|
|
*
|
|
* Deprecated method that is equivalent to ENV.key
|
|
*/
|
|
static VALUE
|
|
env_index(VALUE dmy, VALUE value)
|
|
{
|
|
rb_warn("ENV.index is deprecated; use ENV.key");
|
|
return env_key(dmy, value);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.to_hash -> hash
|
|
* ENV.to_h -> hash
|
|
*
|
|
* Creates a hash with a copy of the environment variables.
|
|
*
|
|
*/
|
|
static VALUE
|
|
env_to_hash(void)
|
|
{
|
|
char **env;
|
|
VALUE hash;
|
|
|
|
hash = rb_hash_new();
|
|
env = GET_ENVIRON(environ);
|
|
while (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
rb_hash_aset(hash, env_str_new(*env, s-*env),
|
|
env_str_new2(s+1));
|
|
}
|
|
env++;
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.reject { |name, value| } -> Hash
|
|
* ENV.reject -> Enumerator
|
|
*
|
|
* Same as ENV#delete_if, but works on (and returns) a copy of the
|
|
* environment.
|
|
*/
|
|
static VALUE
|
|
env_reject(void)
|
|
{
|
|
return rb_hash_delete_if(env_to_hash());
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.shift -> Array or nil
|
|
*
|
|
* Removes an environment variable name-value pair from ENV and returns it as
|
|
* an Array. Returns +nil+ if when the environment is empty.
|
|
*/
|
|
static VALUE
|
|
env_shift(void)
|
|
{
|
|
char **env;
|
|
VALUE result = Qnil;
|
|
|
|
env = GET_ENVIRON(environ);
|
|
if (*env) {
|
|
char *s = strchr(*env, '=');
|
|
if (s) {
|
|
VALUE key = env_str_new(*env, s-*env);
|
|
VALUE val = env_str_new2(getenv(RSTRING_PTR(key)));
|
|
env_delete(Qnil, key);
|
|
result = rb_assoc_new(key, val);
|
|
}
|
|
}
|
|
FREE_ENVIRON(environ);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.invert -> Hash
|
|
*
|
|
* Returns a new hash created by using environment variable names as values
|
|
* and values as names.
|
|
*/
|
|
static VALUE
|
|
env_invert(void)
|
|
{
|
|
return rb_hash_invert(env_to_hash());
|
|
}
|
|
|
|
static int
|
|
env_replace_i(VALUE key, VALUE val, VALUE keys)
|
|
{
|
|
env_aset(Qnil, key, val);
|
|
if (rb_ary_includes(keys, key)) {
|
|
rb_ary_delete(keys, key);
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.replace(hash) -> env
|
|
*
|
|
* Replaces the contents of the environment variables with the contents of
|
|
* +hash+.
|
|
*/
|
|
static VALUE
|
|
env_replace(VALUE env, VALUE hash)
|
|
{
|
|
VALUE keys;
|
|
long i;
|
|
|
|
keys = env_keys();
|
|
if (env == hash) return env;
|
|
hash = to_hash(hash);
|
|
rb_hash_foreach(hash, env_replace_i, keys);
|
|
|
|
for (i=0; i<RARRAY_LEN(keys); i++) {
|
|
env_delete(env, RARRAY_AREF(keys, i));
|
|
}
|
|
RB_GC_GUARD(keys);
|
|
return env;
|
|
}
|
|
|
|
static int
|
|
env_update_i(VALUE key, VALUE val)
|
|
{
|
|
if (rb_block_given_p()) {
|
|
val = rb_yield_values(3, key, rb_f_getenv(Qnil, key), val);
|
|
}
|
|
env_aset(Qnil, key, val);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* ENV.update(hash) -> Hash
|
|
* ENV.update(hash) { |name, old_value, new_value| } -> Hash
|
|
*
|
|
* Adds the contents of +hash+ to the environment variables. If no block is
|
|
* specified entries with duplicate keys are overwritten, otherwise the value
|
|
* of each duplicate name is determined by calling the block with the key, its
|
|
* value from the environment and its value from the hash.
|
|
*/
|
|
static VALUE
|
|
env_update(VALUE env, VALUE hash)
|
|
{
|
|
if (env == hash) return env;
|
|
hash = to_hash(hash);
|
|
rb_hash_foreach(hash, env_update_i, 0);
|
|
return env;
|
|
}
|
|
|
|
/*
|
|
* A Hash is a dictionary-like collection of unique keys and their values.
|
|
* Also called associative arrays, they are similar to Arrays, but where an
|
|
* Array uses integers as its index, a Hash allows you to use any object
|
|
* type.
|
|
*
|
|
* Hashes enumerate their values in the order that the corresponding keys
|
|
* were inserted.
|
|
*
|
|
* A Hash can be easily created by using its implicit form:
|
|
*
|
|
* grades = { "Jane Doe" => 10, "Jim Doe" => 6 }
|
|
*
|
|
* Hashes allow an alternate syntax form when your keys are always symbols.
|
|
* Instead of
|
|
*
|
|
* options = { :font_size => 10, :font_family => "Arial" }
|
|
*
|
|
* You could write it as:
|
|
*
|
|
* options = { font_size: 10, font_family: "Arial" }
|
|
*
|
|
* Each named key is a symbol you can access in hash:
|
|
*
|
|
* options[:font_size] # => 10
|
|
*
|
|
* A Hash can also be created through its ::new method:
|
|
*
|
|
* grades = Hash.new
|
|
* grades["Dorothy Doe"] = 9
|
|
*
|
|
* Hashes have a <em>default value</em> that is returned when accessing
|
|
* keys that do not exist in the hash. If no default is set +nil+ is used.
|
|
* You can set the default value by sending it as an argument to Hash.new:
|
|
*
|
|
* grades = Hash.new(0)
|
|
*
|
|
* Or by using the #default= method:
|
|
*
|
|
* grades = {"Timmy Doe" => 8}
|
|
* grades.default = 0
|
|
*
|
|
* Accessing a value in a Hash requires using its key:
|
|
*
|
|
* puts grades["Jane Doe"] # => 0
|
|
*
|
|
* === Common Uses
|
|
*
|
|
* Hashes are an easy way to represent data structures, such as
|
|
*
|
|
* books = {}
|
|
* books[:matz] = "The Ruby Language"
|
|
* books[:black] = "The Well-Grounded Rubyist"
|
|
*
|
|
* Hashes are also commonly used as a way to have named parameters in
|
|
* functions. Note that no brackets are used below. If a hash is the last
|
|
* argument on a method call, no braces are needed, thus creating a really
|
|
* clean interface:
|
|
*
|
|
* Person.create(name: "John Doe", age: 27)
|
|
*
|
|
* def self.create(params)
|
|
* @name = params[:name]
|
|
* @age = params[:age]
|
|
* end
|
|
*
|
|
* === Hash Keys
|
|
*
|
|
* Two objects refer to the same hash key when their <code>hash</code> value
|
|
* is identical and the two objects are <code>eql?</code> to each other.
|
|
*
|
|
* A user-defined class may be used as a hash key if the <code>hash</code>
|
|
* and <code>eql?</code> methods are overridden to provide meaningful
|
|
* behavior. By default, separate instances refer to separate hash keys.
|
|
*
|
|
* A typical implementation of <code>hash</code> is based on the
|
|
* object's data while <code>eql?</code> is usually aliased to the overridden
|
|
* <code>==</code> method:
|
|
*
|
|
* class Book
|
|
* attr_reader :author, :title
|
|
*
|
|
* def initialize(author, title)
|
|
* @author = author
|
|
* @title = title
|
|
* end
|
|
*
|
|
* def ==(other)
|
|
* self.class === other and
|
|
* other.author == @author and
|
|
* other.title == @title
|
|
* end
|
|
*
|
|
* alias eql? ==
|
|
*
|
|
* def hash
|
|
* @author.hash ^ @title.hash # XOR
|
|
* end
|
|
* end
|
|
*
|
|
* book1 = Book.new 'matz', 'Ruby in a Nutshell'
|
|
* book2 = Book.new 'matz', 'Ruby in a Nutshell'
|
|
*
|
|
* reviews = {}
|
|
*
|
|
* reviews[book1] = 'Great reference!'
|
|
* reviews[book2] = 'Nice and compact!'
|
|
*
|
|
* reviews.length #=> 1
|
|
*
|
|
* See also Object#hash and Object#eql?
|
|
*/
|
|
|
|
void
|
|
Init_Hash(void)
|
|
{
|
|
#undef rb_intern
|
|
#define rb_intern(str) rb_intern_const(str)
|
|
|
|
id_hash = rb_intern("hash");
|
|
id_yield = rb_intern("yield");
|
|
id_default = rb_intern("default");
|
|
id_flatten_bang = rb_intern("flatten!");
|
|
|
|
rb_cHash = rb_define_class("Hash", rb_cObject);
|
|
|
|
rb_include_module(rb_cHash, rb_mEnumerable);
|
|
|
|
rb_define_alloc_func(rb_cHash, empty_hash_alloc);
|
|
rb_define_singleton_method(rb_cHash, "[]", rb_hash_s_create, -1);
|
|
rb_define_singleton_method(rb_cHash, "try_convert", rb_hash_s_try_convert, 1);
|
|
rb_define_method(rb_cHash,"initialize", rb_hash_initialize, -1);
|
|
rb_define_method(rb_cHash,"initialize_copy", rb_hash_initialize_copy, 1);
|
|
rb_define_method(rb_cHash,"rehash", rb_hash_rehash, 0);
|
|
|
|
rb_define_method(rb_cHash,"to_hash", rb_hash_to_hash, 0);
|
|
rb_define_method(rb_cHash,"to_h", rb_hash_to_h, 0);
|
|
rb_define_method(rb_cHash,"to_a", rb_hash_to_a, 0);
|
|
rb_define_method(rb_cHash,"inspect", rb_hash_inspect, 0);
|
|
rb_define_alias(rb_cHash, "to_s", "inspect");
|
|
|
|
rb_define_method(rb_cHash,"==", rb_hash_equal, 1);
|
|
rb_define_method(rb_cHash,"[]", rb_hash_aref, 1);
|
|
rb_define_method(rb_cHash,"hash", rb_hash_hash, 0);
|
|
rb_define_method(rb_cHash,"eql?", rb_hash_eql, 1);
|
|
rb_define_method(rb_cHash,"fetch", rb_hash_fetch_m, -1);
|
|
rb_define_method(rb_cHash,"[]=", rb_hash_aset, 2);
|
|
rb_define_method(rb_cHash,"store", rb_hash_aset, 2);
|
|
rb_define_method(rb_cHash,"default", rb_hash_default, -1);
|
|
rb_define_method(rb_cHash,"default=", rb_hash_set_default, 1);
|
|
rb_define_method(rb_cHash,"default_proc", rb_hash_default_proc, 0);
|
|
rb_define_method(rb_cHash,"default_proc=", rb_hash_set_default_proc, 1);
|
|
rb_define_method(rb_cHash,"key", rb_hash_key, 1);
|
|
rb_define_method(rb_cHash,"index", rb_hash_index, 1);
|
|
rb_define_method(rb_cHash,"size", rb_hash_size, 0);
|
|
rb_define_method(rb_cHash,"length", rb_hash_size, 0);
|
|
rb_define_method(rb_cHash,"empty?", rb_hash_empty_p, 0);
|
|
|
|
rb_define_method(rb_cHash,"each_value", rb_hash_each_value, 0);
|
|
rb_define_method(rb_cHash,"each_key", rb_hash_each_key, 0);
|
|
rb_define_method(rb_cHash,"each_pair", rb_hash_each_pair, 0);
|
|
rb_define_method(rb_cHash,"each", rb_hash_each_pair, 0);
|
|
|
|
rb_define_method(rb_cHash,"keys", rb_hash_keys, 0);
|
|
rb_define_method(rb_cHash,"values", rb_hash_values, 0);
|
|
rb_define_method(rb_cHash,"values_at", rb_hash_values_at, -1);
|
|
rb_define_method(rb_cHash,"fetch_values", rb_hash_fetch_values, -1);
|
|
|
|
rb_define_method(rb_cHash,"shift", rb_hash_shift, 0);
|
|
rb_define_method(rb_cHash,"delete", rb_hash_delete_m, 1);
|
|
rb_define_method(rb_cHash,"delete_if", rb_hash_delete_if, 0);
|
|
rb_define_method(rb_cHash,"keep_if", rb_hash_keep_if, 0);
|
|
rb_define_method(rb_cHash,"select", rb_hash_select, 0);
|
|
rb_define_method(rb_cHash,"select!", rb_hash_select_bang, 0);
|
|
rb_define_method(rb_cHash,"reject", rb_hash_reject, 0);
|
|
rb_define_method(rb_cHash,"reject!", rb_hash_reject_bang, 0);
|
|
rb_define_method(rb_cHash,"clear", rb_hash_clear, 0);
|
|
rb_define_method(rb_cHash,"invert", rb_hash_invert, 0);
|
|
rb_define_method(rb_cHash,"update", rb_hash_update, 1);
|
|
rb_define_method(rb_cHash,"replace", rb_hash_replace, 1);
|
|
rb_define_method(rb_cHash,"merge!", rb_hash_update, 1);
|
|
rb_define_method(rb_cHash,"merge", rb_hash_merge, 1);
|
|
rb_define_method(rb_cHash, "assoc", rb_hash_assoc, 1);
|
|
rb_define_method(rb_cHash, "rassoc", rb_hash_rassoc, 1);
|
|
rb_define_method(rb_cHash, "flatten", rb_hash_flatten, -1);
|
|
|
|
rb_define_method(rb_cHash,"include?", rb_hash_has_key, 1);
|
|
rb_define_method(rb_cHash,"member?", rb_hash_has_key, 1);
|
|
rb_define_method(rb_cHash,"has_key?", rb_hash_has_key, 1);
|
|
rb_define_method(rb_cHash,"has_value?", rb_hash_has_value, 1);
|
|
rb_define_method(rb_cHash,"key?", rb_hash_has_key, 1);
|
|
rb_define_method(rb_cHash,"value?", rb_hash_has_value, 1);
|
|
|
|
rb_define_method(rb_cHash,"compare_by_identity", rb_hash_compare_by_id, 0);
|
|
rb_define_method(rb_cHash,"compare_by_identity?", rb_hash_compare_by_id_p, 0);
|
|
|
|
rb_define_method(rb_cHash, "any?", rb_hash_any_p, 0);
|
|
|
|
/* Document-class: ENV
|
|
*
|
|
* ENV is a hash-like accessor for environment variables.
|
|
*/
|
|
|
|
/*
|
|
* Hack to get RDoc to regard ENV as a class:
|
|
* envtbl = rb_define_class("ENV", rb_cObject);
|
|
*/
|
|
origenviron = environ;
|
|
envtbl = rb_obj_alloc(rb_cObject);
|
|
rb_extend_object(envtbl, rb_mEnumerable);
|
|
|
|
rb_define_singleton_method(envtbl,"[]", rb_f_getenv, 1);
|
|
rb_define_singleton_method(envtbl,"fetch", env_fetch, -1);
|
|
rb_define_singleton_method(envtbl,"[]=", env_aset, 2);
|
|
rb_define_singleton_method(envtbl,"store", env_aset, 2);
|
|
rb_define_singleton_method(envtbl,"each", env_each_pair, 0);
|
|
rb_define_singleton_method(envtbl,"each_pair", env_each_pair, 0);
|
|
rb_define_singleton_method(envtbl,"each_key", env_each_key, 0);
|
|
rb_define_singleton_method(envtbl,"each_value", env_each_value, 0);
|
|
rb_define_singleton_method(envtbl,"delete", env_delete_m, 1);
|
|
rb_define_singleton_method(envtbl,"delete_if", env_delete_if, 0);
|
|
rb_define_singleton_method(envtbl,"keep_if", env_keep_if, 0);
|
|
rb_define_singleton_method(envtbl,"clear", rb_env_clear, 0);
|
|
rb_define_singleton_method(envtbl,"reject", env_reject, 0);
|
|
rb_define_singleton_method(envtbl,"reject!", env_reject_bang, 0);
|
|
rb_define_singleton_method(envtbl,"select", env_select, 0);
|
|
rb_define_singleton_method(envtbl,"select!", env_select_bang, 0);
|
|
rb_define_singleton_method(envtbl,"shift", env_shift, 0);
|
|
rb_define_singleton_method(envtbl,"invert", env_invert, 0);
|
|
rb_define_singleton_method(envtbl,"replace", env_replace, 1);
|
|
rb_define_singleton_method(envtbl,"update", env_update, 1);
|
|
rb_define_singleton_method(envtbl,"inspect", env_inspect, 0);
|
|
rb_define_singleton_method(envtbl,"rehash", env_none, 0);
|
|
rb_define_singleton_method(envtbl,"to_a", env_to_a, 0);
|
|
rb_define_singleton_method(envtbl,"to_s", env_to_s, 0);
|
|
rb_define_singleton_method(envtbl,"key", env_key, 1);
|
|
rb_define_singleton_method(envtbl,"index", env_index, 1);
|
|
rb_define_singleton_method(envtbl,"size", env_size, 0);
|
|
rb_define_singleton_method(envtbl,"length", env_size, 0);
|
|
rb_define_singleton_method(envtbl,"empty?", env_empty_p, 0);
|
|
rb_define_singleton_method(envtbl,"keys", env_keys, 0);
|
|
rb_define_singleton_method(envtbl,"values", env_values, 0);
|
|
rb_define_singleton_method(envtbl,"values_at", env_values_at, -1);
|
|
rb_define_singleton_method(envtbl,"include?", env_has_key, 1);
|
|
rb_define_singleton_method(envtbl,"member?", env_has_key, 1);
|
|
rb_define_singleton_method(envtbl,"has_key?", env_has_key, 1);
|
|
rb_define_singleton_method(envtbl,"has_value?", env_has_value, 1);
|
|
rb_define_singleton_method(envtbl,"key?", env_has_key, 1);
|
|
rb_define_singleton_method(envtbl,"value?", env_has_value, 1);
|
|
rb_define_singleton_method(envtbl,"to_hash", env_to_hash, 0);
|
|
rb_define_singleton_method(envtbl,"to_h", env_to_hash, 0);
|
|
rb_define_singleton_method(envtbl,"assoc", env_assoc, 1);
|
|
rb_define_singleton_method(envtbl,"rassoc", env_rassoc, 1);
|
|
|
|
/*
|
|
* ENV is a Hash-like accessor for environment variables.
|
|
*
|
|
* See ENV (the class) for more details.
|
|
*/
|
|
rb_define_global_const("ENV", envtbl);
|
|
|
|
/* for callcc */
|
|
ruby_register_rollback_func_for_ensure(hash_foreach_ensure, hash_foreach_ensure_rollback);
|
|
}
|