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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@760 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
580 lines
12 KiB
C
580 lines
12 KiB
C
/************************************************
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sdbminit.c -
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$Author$
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$Date$
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created at: Fri May 7 08:34:24 JST 1999
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Copyright (C) 1995-1998 Yukihiro Matsumoto
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************************************************/
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#include "ruby.h"
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#include "sdbm.h"
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#include <fcntl.h>
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#include <errno.h>
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VALUE cSDBM;
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struct dbmdata {
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int di_size;
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DBM *di_dbm;
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};
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static void
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closed_sdbm()
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{
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rb_raise(rb_eRuntimeError, "closed SDBM file");
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}
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#define GetDBM(obj, dbmp) {\
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Data_Get_Struct(obj, struct dbmdata, dbmp);\
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if (dbmp->di_dbm == 0) closed_sdbm();\
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}
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static void
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free_sdbm(dbmp)
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struct dbmdata *dbmp;
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{
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if (dbmp->di_dbm) sdbm_close(dbmp->di_dbm);
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free(dbmp);
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}
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static VALUE
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fsdbm_s_open(argc, argv, klass)
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int argc;
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VALUE *argv;
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VALUE klass;
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{
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VALUE file, vmode;
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DBM *dbm;
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struct dbmdata *dbmp;
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int mode;
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VALUE obj;
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if (rb_scan_args(argc, argv, "11", &file, &vmode) == 1) {
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mode = 0666; /* default value */
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}
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else if (NIL_P(vmode)) {
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mode = -1; /* return nil if DB not exist */
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}
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else {
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mode = NUM2INT(vmode);
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}
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Check_SafeStr(file);
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dbm = 0;
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if (mode >= 0)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR|O_CREAT, mode);
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if (!dbm)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDWR, mode);
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if (!dbm)
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dbm = sdbm_open(RSTRING(file)->ptr, O_RDONLY, mode);
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if (!dbm) {
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if (mode == -1) return Qnil;
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rb_sys_fail(RSTRING(file)->ptr);
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}
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obj = Data_Make_Struct(klass,struct dbmdata,0,free_sdbm,dbmp);
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dbmp->di_dbm = dbm;
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dbmp->di_size = -1;
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return obj;
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}
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static VALUE
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fsdbm_close(obj)
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VALUE obj;
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{
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struct dbmdata *dbmp;
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GetDBM(obj, dbmp);
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sdbm_close(dbmp->di_dbm);
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dbmp->di_dbm = 0;
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return Qnil;
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}
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static VALUE
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fsdbm_fetch(obj, keystr)
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VALUE obj, keystr;
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{
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datum key, value;
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struct dbmdata *dbmp;
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DBM *dbm;
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Check_Type(keystr, T_STRING);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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value = sdbm_fetch(dbm, key);
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if (value.dptr == 0) {
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return Qnil;
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}
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return rb_tainted_str_new(value.dptr, value.dsize);
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}
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static VALUE
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fsdbm_indexes(argc, argv, obj)
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int argc;
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VALUE *argv;
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VALUE obj;
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{
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VALUE new;
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int i;
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new = rb_ary_new2(argc);
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for (i=0; i<argc; i++) {
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rb_ary_push(new, fsdbm_fetch(obj, argv[i]));
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}
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return new;
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}
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static VALUE
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fsdbm_delete(obj, keystr)
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VALUE obj, keystr;
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{
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datum key, value;
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struct dbmdata *dbmp;
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DBM *dbm;
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rb_secure(4);
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Check_Type(keystr, T_STRING);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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value = sdbm_fetch(dbm, key);
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if (value.dptr == 0) {
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if (rb_block_given_p()) rb_yield(keystr);
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return Qnil;
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}
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if (sdbm_delete(dbm, key)) {
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dbmp->di_size = -1;
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rb_raise(rb_eRuntimeError, "dbm_delete failed");
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}
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else if (dbmp->di_size >= 0) {
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dbmp->di_size--;
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}
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return obj;
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}
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static VALUE
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fsdbm_shift(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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key = sdbm_firstkey(dbm);
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if (!key.dptr) return Qnil;
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val = sdbm_fetch(dbm, key);
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sdbm_delete(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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return rb_assoc_new(keystr, valstr);
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}
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static VALUE
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fsdbm_delete_if(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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if (RTEST(rb_yield(rb_assoc_new(keystr, valstr)))) {
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if (sdbm_delete(dbm, key)) {
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rb_raise(rb_eRuntimeError, "sdbm_delete failed");
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}
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}
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}
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return obj;
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}
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static VALUE
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fsdbm_clear(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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rb_secure(4);
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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dbmp->di_size = -1;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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if (sdbm_delete(dbm, key)) {
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rb_raise(rb_eRuntimeError, "sdbm_delete failed");
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}
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}
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return obj;
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}
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static VALUE
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fsdbm_invert(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE keystr, valstr;
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VALUE hash = rb_hash_new();
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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rb_hash_aset(hash, valstr, keystr);
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}
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return obj;
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}
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static VALUE
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each_pair(obj)
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VALUE obj;
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{
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return rb_funcall(obj, rb_intern("each_pair"), 0, 0);
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}
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static VALUE fsdbm_store _((VALUE,VALUE,VALUE));
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static VALUE
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update_i(pair, dbm)
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VALUE pair, dbm;
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{
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Check_Type(pair, T_ARRAY);
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if (RARRAY(pair)->len < 2) {
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rb_raise(rb_eArgError, "pair must be [key, value]");
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}
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fsdbm_store(dbm, RARRAY(pair)->ptr[0], RARRAY(pair)->ptr[1]);
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return Qnil;
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}
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static VALUE
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fsdbm_update(obj, other)
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VALUE obj, other;
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{
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rb_iterate(each_pair, other, update_i, obj);
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return obj;
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}
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static VALUE
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fsdbm_replace(obj, other)
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VALUE obj, other;
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{
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fsdbm_clear(obj);
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rb_iterate(each_pair, other, update_i, obj);
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return obj;
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}
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static VALUE
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fsdbm_store(obj, keystr, valstr)
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VALUE obj, keystr, valstr;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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if (valstr == Qnil) {
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fsdbm_delete(obj, keystr);
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return Qnil;
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}
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rb_secure(4);
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keystr = rb_obj_as_string(keystr);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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if (NIL_P(valstr)) return fsdbm_delete(obj, keystr);
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valstr = rb_obj_as_string(valstr);
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val.dptr = RSTRING(valstr)->ptr;
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val.dsize = RSTRING(valstr)->len;
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GetDBM(obj, dbmp);
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dbmp->di_size = -1;
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dbm = dbmp->di_dbm;
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if (sdbm_store(dbm, key, val, DBM_REPLACE)) {
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#ifdef HAVE_DBM_CLAERERR
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sdbm_clearerr(dbm);
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#endif
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if (errno == EPERM) rb_sys_fail(0);
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rb_raise(rb_eRuntimeError, "sdbm_store failed");
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}
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return valstr;
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}
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static VALUE
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fsdbm_length(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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int i = 0;
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GetDBM(obj, dbmp);
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if (dbmp->di_size > 0) return INT2FIX(dbmp->di_size);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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i++;
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}
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dbmp->di_size = i;
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return INT2FIX(i);
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}
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static VALUE
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fsdbm_empty_p(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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int i = 0;
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GetDBM(obj, dbmp);
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if (dbmp->di_size < 0) {
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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i++;
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}
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}
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else {
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i = dbmp->di_size;
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}
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if (i == 0) return Qtrue;
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return Qfalse;
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}
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static VALUE
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fsdbm_each_value(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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rb_yield(rb_tainted_str_new(val.dptr, val.dsize));
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}
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return obj;
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}
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static VALUE
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fsdbm_each_key(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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rb_yield(rb_tainted_str_new(key.dptr, key.dsize));
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}
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return obj;
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}
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static VALUE
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fsdbm_each_pair(obj)
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VALUE obj;
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{
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datum key, val;
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DBM *dbm;
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struct dbmdata *dbmp;
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VALUE keystr, valstr;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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keystr = rb_tainted_str_new(key.dptr, key.dsize);
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valstr = rb_tainted_str_new(val.dptr, val.dsize);
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rb_yield(rb_assoc_new(keystr, valstr));
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}
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return obj;
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}
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static VALUE
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fsdbm_keys(obj)
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VALUE obj;
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{
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datum key;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE ary;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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ary = rb_ary_new();
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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rb_ary_push(ary, rb_tainted_str_new(key.dptr, key.dsize));
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}
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return ary;
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}
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static VALUE
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fsdbm_values(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE ary;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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ary = rb_ary_new();
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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rb_ary_push(ary, rb_tainted_str_new(val.dptr, val.dsize));
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}
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return ary;
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}
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static VALUE
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fsdbm_has_key(obj, keystr)
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VALUE obj, keystr;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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Check_Type(keystr, T_STRING);
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key.dptr = RSTRING(keystr)->ptr;
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key.dsize = RSTRING(keystr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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val = sdbm_fetch(dbm, key);
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if (val.dptr) return Qtrue;
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return Qfalse;
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}
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static VALUE
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fsdbm_has_value(obj, valstr)
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VALUE obj, valstr;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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Check_Type(valstr, T_STRING);
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val.dptr = RSTRING(valstr)->ptr;
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val.dsize = RSTRING(valstr)->len;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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if (val.dsize == RSTRING(valstr)->len &&
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memcmp(val.dptr, RSTRING(valstr)->ptr, val.dsize) == 0)
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return Qtrue;
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}
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return Qfalse;
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}
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static VALUE
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fsdbm_to_a(obj)
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VALUE obj;
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{
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datum key, val;
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struct dbmdata *dbmp;
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DBM *dbm;
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VALUE ary;
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GetDBM(obj, dbmp);
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dbm = dbmp->di_dbm;
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ary = rb_ary_new();
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for (key = sdbm_firstkey(dbm); key.dptr; key = sdbm_nextkey(dbm)) {
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val = sdbm_fetch(dbm, key);
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rb_ary_push(ary, rb_assoc_new(rb_tainted_str_new(key.dptr, key.dsize),
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rb_tainted_str_new(val.dptr, val.dsize)));
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}
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return ary;
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}
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void
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Init_sdbm()
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{
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cSDBM = rb_define_class("SDBM", rb_cObject);
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rb_include_module(cSDBM, rb_mEnumerable);
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rb_define_singleton_method(cSDBM, "open", fsdbm_s_open, -1);
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rb_define_singleton_method(cSDBM, "new", fsdbm_s_open, -1);
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rb_define_method(cSDBM, "close", fsdbm_close, 0);
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rb_define_method(cSDBM, "[]", fsdbm_fetch, 1);
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rb_define_method(cSDBM, "[]=", fsdbm_store, 2);
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rb_define_method(cSDBM, "indexes", fsdbm_indexes, -1);
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rb_define_method(cSDBM, "indices", fsdbm_indexes, -1);
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rb_define_method(cSDBM, "length", fsdbm_length, 0);
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rb_define_alias(cSDBM, "size", "length");
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rb_define_method(cSDBM, "empty?", fsdbm_empty_p, 0);
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rb_define_method(cSDBM, "each", fsdbm_each_pair, 0);
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rb_define_method(cSDBM, "each_value", fsdbm_each_value, 0);
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rb_define_method(cSDBM, "each_key", fsdbm_each_key, 0);
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rb_define_method(cSDBM, "each_pair", fsdbm_each_pair, 0);
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rb_define_method(cSDBM, "keys", fsdbm_keys, 0);
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rb_define_method(cSDBM, "values", fsdbm_values, 0);
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rb_define_method(cSDBM, "shift", fsdbm_shift, 1);
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rb_define_method(cSDBM, "delete", fsdbm_delete, 1);
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rb_define_method(cSDBM, "delete_if", fsdbm_delete_if, 0);
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rb_define_method(cSDBM, "clear", fsdbm_clear, 0);
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rb_define_method(cSDBM,"invert", fsdbm_invert, 0);
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rb_define_method(cSDBM,"update", fsdbm_update, 1);
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rb_define_method(cSDBM,"replace", fsdbm_replace, 1);
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|
|
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rb_define_method(cSDBM, "include?", fsdbm_has_key, 1);
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rb_define_method(cSDBM, "has_key?", fsdbm_has_key, 1);
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rb_define_method(cSDBM, "has_value?", fsdbm_has_value, 1);
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rb_define_method(cSDBM, "key?", fsdbm_has_key, 1);
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|
rb_define_method(cSDBM, "value?", fsdbm_has_value, 1);
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|
|
|
rb_define_method(cSDBM, "to_a", fsdbm_to_a, 0);
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}
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