mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
438b8706a7
patch from Charlie Savage. [ruby-core:22869] * ext/digest/bubblebabble/bubblebabble.c (bubblebabble_str_new): ditto. * ext/digest/digest.c (hexencode_str_new): ditto. * ext/iconv/iconv.c (iconv_convert): ditto. * ext/socket/socket.c (inspect_sockaddr): ditto. * ext/socket/raddrinfo.c (sockaddr_obj): ditto. * ext/syck/emitter.c (syck_emitter_write): ditto. * ext/syck/emitter.c (syck_emitter_flush): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
1212 lines
31 KiB
C
1212 lines
31 KiB
C
/* -*- mode:c; c-file-style:"ruby" -*- */
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/**********************************************************************
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iconv.c -
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$Author$
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created at: Wed Dec 1 20:28:09 JST 1999
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All the files in this distribution are covered under the Ruby's
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license (see the file COPYING).
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Documentation by Yukihiro Matsumoto and Gavin Sinclair.
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**********************************************************************/
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#include "ruby/ruby.h"
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#include <errno.h>
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#include <iconv.h>
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#include <assert.h>
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#include "ruby/st.h"
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#include "ruby/encoding.h"
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/*
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* Document-class: Iconv
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*
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* == Summary
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*
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* Ruby extension for charset conversion.
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*
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* == Abstract
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*
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* Iconv is a wrapper class for the UNIX 95 <tt>iconv()</tt> function family,
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* which translates string between various encoding systems.
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*
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* See Open Group's on-line documents for more details.
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* * <tt>iconv.h</tt>: http://www.opengroup.org/onlinepubs/007908799/xsh/iconv.h.html
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* * <tt>iconv_open()</tt>: http://www.opengroup.org/onlinepubs/007908799/xsh/iconv_open.html
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* * <tt>iconv()</tt>: http://www.opengroup.org/onlinepubs/007908799/xsh/iconv.html
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* * <tt>iconv_close()</tt>: http://www.opengroup.org/onlinepubs/007908799/xsh/iconv_close.html
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*
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* Which coding systems are available is platform-dependent.
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*
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* == Examples
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*
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* 1. Simple conversion between two charsets.
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*
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* converted_text = Iconv.conv('iso-8859-15', 'utf-8', text)
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*
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* 2. Instantiate a new Iconv and use method Iconv#iconv.
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*
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* cd = Iconv.new(to, from)
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* begin
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* input.each { |s| output << cd.iconv(s) }
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* output << cd.iconv(nil) # Don't forget this!
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* ensure
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* cd.close
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* end
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*
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* 3. Invoke Iconv.open with a block.
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*
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* Iconv.open(to, from) do |cd|
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* input.each { |s| output << cd.iconv(s) }
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* output << cd.iconv(nil)
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* end
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*
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* 4. Shorthand for (3).
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*
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* Iconv.iconv(to, from, *input.to_a)
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*
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* == Attentions
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*
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* Even if some extentions of implementation dependent are useful,
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* DON'T USE those extentions in libraries and scripts to widely distribute.
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* If you want to use those feature, use String#encode.
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*/
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/* Invalid value for iconv_t is -1 but 0 for VALUE, I hope VALUE is
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big enough to keep iconv_t */
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#define VALUE2ICONV(v) ((iconv_t)((VALUE)(v) ^ -1))
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#define ICONV2VALUE(c) ((VALUE)(c) ^ -1)
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struct iconv_env_t
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{
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iconv_t cd;
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int argc;
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VALUE *argv;
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VALUE ret;
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int toidx;
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VALUE (*append)_((VALUE, VALUE));
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};
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struct rb_iconv_opt_t
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{
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VALUE transliterate;
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VALUE discard_ilseq;
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};
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static ID id_transliterate, id_discard_ilseq;
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static VALUE rb_eIconvInvalidEncoding;
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static VALUE rb_eIconvFailure;
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static VALUE rb_eIconvIllegalSeq;
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static VALUE rb_eIconvInvalidChar;
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static VALUE rb_eIconvOutOfRange;
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static VALUE rb_eIconvBrokenLibrary;
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static ID rb_success, rb_failed;
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static VALUE iconv_fail _((VALUE error, VALUE success, VALUE failed, struct iconv_env_t* env, const char *mesg));
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static VALUE iconv_fail_retry _((VALUE error, VALUE success, VALUE failed, struct iconv_env_t* env, const char *mesg));
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static VALUE iconv_failure_initialize _((VALUE error, VALUE mesg, VALUE success, VALUE failed));
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static VALUE iconv_failure_success _((VALUE self));
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static VALUE iconv_failure_failed _((VALUE self));
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static iconv_t iconv_create _((VALUE to, VALUE from, struct rb_iconv_opt_t *opt, int *idx));
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static void iconv_dfree _((void *cd));
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static VALUE iconv_free _((VALUE cd));
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static VALUE iconv_try _((iconv_t cd, const char **inptr, size_t *inlen, char **outptr, size_t *outlen));
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static VALUE rb_str_derive _((VALUE str, const char* ptr, int len));
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static VALUE iconv_convert _((iconv_t cd, VALUE str, long start, long length, int toidx,
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struct iconv_env_t* env));
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static VALUE iconv_s_allocate _((VALUE klass));
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static VALUE iconv_initialize _((int argc, VALUE *argv, VALUE self));
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static VALUE iconv_s_open _((int argc, VALUE *argv, VALUE self));
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static VALUE iconv_s_convert _((struct iconv_env_t* env));
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static VALUE iconv_s_iconv _((int argc, VALUE *argv, VALUE self));
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static VALUE iconv_init_state _((VALUE cd));
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static VALUE iconv_finish _((VALUE self));
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static VALUE iconv_iconv _((int argc, VALUE *argv, VALUE self));
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static VALUE iconv_conv _((int argc, VALUE *argv, VALUE self));
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static VALUE charset_map;
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/*
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* Document-method: charset_map
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* call-seq: Iconv.charset_map
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*
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* Returns the map from canonical name to system dependent name.
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*/
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static VALUE
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charset_map_get(void)
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{
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return charset_map;
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}
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static VALUE
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strip_glibc_option(VALUE *code)
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{
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VALUE val = StringValue(*code);
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const char *ptr = RSTRING_PTR(val), *pend = RSTRING_END(val);
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const char *slash = memchr(ptr, '/', pend - ptr);
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if (slash && slash < pend - 1 && slash[1] == '/') {
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VALUE opt = rb_str_subseq(val, slash - ptr, pend - slash);
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val = rb_str_subseq(val, 0, slash - ptr);
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*code = val;
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return opt;
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}
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return 0;
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}
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static char *
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map_charset(VALUE *code)
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{
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VALUE val = StringValue(*code);
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if (RHASH_SIZE(charset_map)) {
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VALUE key = rb_funcall2(val, rb_intern("downcase"), 0, 0);
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StringValuePtr(key);
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if (st_lookup(RHASH_TBL(charset_map), key, &val)) {
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*code = val;
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}
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}
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return StringValuePtr(*code);
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}
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static iconv_t
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iconv_create(VALUE to, VALUE from, struct rb_iconv_opt_t *opt, int *idx)
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{
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VALUE toopt = strip_glibc_option(&to);
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VALUE fromopt = strip_glibc_option(&from);
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VALUE toenc = 0, fromenc = 0;
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const char* tocode = map_charset(&to);
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const char* fromcode = map_charset(&from);
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iconv_t cd;
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int retry = 0;
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*idx = rb_enc_find_index(tocode);
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if (toopt) {
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toenc = rb_str_plus(to, toopt);
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tocode = RSTRING_PTR(toenc);
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}
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if (fromopt) {
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fromenc = rb_str_plus(from, fromopt);
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fromcode = RSTRING_PTR(fromenc);
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}
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while ((cd = iconv_open(tocode, fromcode)) == (iconv_t)-1) {
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int inval = 0;
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switch (errno) {
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case EMFILE:
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case ENFILE:
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case ENOMEM:
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if (!retry++) {
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rb_gc();
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continue;
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}
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break;
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case EINVAL:
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retry = 0;
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inval = 1;
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if (toenc) {
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tocode = RSTRING_PTR(to);
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rb_str_resize(toenc, 0);
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toenc = 0;
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continue;
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}
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if (fromenc) {
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fromcode = RSTRING_PTR(from);
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rb_str_resize(fromenc, 0);
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fromenc = 0;
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continue;
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}
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break;
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}
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{
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const char *s = inval ? "invalid encoding " : "iconv";
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volatile VALUE msg = rb_str_new(0, strlen(s) + RSTRING_LEN(to) +
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RSTRING_LEN(from) + 8);
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sprintf(RSTRING_PTR(msg), "%s(\"%s\", \"%s\")",
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s, RSTRING_PTR(to), RSTRING_PTR(from));
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s = RSTRING_PTR(msg);
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rb_str_set_len(msg, strlen(s));
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if (!inval) rb_sys_fail(s);
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rb_exc_raise(iconv_fail(rb_eIconvInvalidEncoding, Qnil,
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rb_ary_new3(2, to, from), NULL, s));
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}
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}
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if (toopt || fromopt) {
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if (toopt && fromopt && RTEST(rb_str_equal(toopt, fromopt))) {
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fromopt = 0;
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}
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if (toopt && fromopt) {
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rb_warning("encoding option isn't portable: %s, %s",
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RSTRING_PTR(toopt) + 2, RSTRING_PTR(fromopt) + 2);
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}
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else {
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rb_warning("encoding option isn't portable: %s",
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(toopt ? RSTRING_PTR(toopt) : RSTRING_PTR(fromopt)) + 2);
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}
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}
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if (opt) {
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#ifdef ICONV_SET_TRANSLITERATE
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if (opt->transliterate != Qundef) {
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int flag = RTEST(opt->transliterate);
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rb_warning("encoding option isn't portable: transliterate");
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if (iconvctl(cd, ICONV_SET_TRANSLITERATE, (void *)&flag))
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rb_sys_fail("ICONV_SET_TRANSLITERATE");
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}
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#endif
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#ifdef ICONV_SET_DISCARD_ILSEQ
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if (opt->discard_ilseq != Qundef) {
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int flag = RTEST(opt->discard_ilseq);
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rb_warning("encoding option isn't portable: discard_ilseq");
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if (iconvctl(cd, ICONV_SET_DISCARD_ILSEQ, (void *)&flag))
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rb_sys_fail("ICONV_SET_DISCARD_ILSEQ");
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}
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#endif
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}
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return cd;
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}
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static void
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iconv_dfree(void *cd)
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{
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iconv_close(VALUE2ICONV(cd));
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}
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#define ICONV_FREE iconv_dfree
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static VALUE
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iconv_free(VALUE cd)
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{
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if (cd && iconv_close(VALUE2ICONV(cd)) == -1)
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rb_sys_fail("iconv_close");
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return Qnil;
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}
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static VALUE
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check_iconv(VALUE obj)
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{
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Check_Type(obj, T_DATA);
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if (RDATA(obj)->dfree != ICONV_FREE) {
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rb_raise(rb_eArgError, "Iconv expected (%s)", rb_class2name(CLASS_OF(obj)));
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}
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return (VALUE)DATA_PTR(obj);
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}
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static VALUE
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iconv_try(iconv_t cd, const char **inptr, size_t *inlen, char **outptr, size_t *outlen)
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{
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#ifdef ICONV_INPTR_CONST
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#define ICONV_INPTR_CAST
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#else
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#define ICONV_INPTR_CAST (char **)
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#endif
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size_t ret;
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errno = 0;
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ret = iconv(cd, ICONV_INPTR_CAST inptr, inlen, outptr, outlen);
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if (ret == (size_t)-1) {
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if (!*inlen)
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return Qfalse;
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switch (errno) {
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case E2BIG:
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/* try the left in next loop */
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break;
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case EILSEQ:
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return rb_eIconvIllegalSeq;
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case EINVAL:
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return rb_eIconvInvalidChar;
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case 0:
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return rb_eIconvBrokenLibrary;
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default:
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rb_sys_fail("iconv");
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}
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}
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else if (*inlen > 0) {
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/* something goes wrong */
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return rb_eIconvIllegalSeq;
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}
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else if (ret) {
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return Qnil; /* conversion */
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}
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return Qfalse;
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}
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#define FAILED_MAXLEN 16
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static VALUE
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iconv_failure_initialize(VALUE error, VALUE mesg, VALUE success, VALUE failed)
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{
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rb_call_super(1, &mesg);
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rb_ivar_set(error, rb_success, success);
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rb_ivar_set(error, rb_failed, failed);
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return error;
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}
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static VALUE
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iconv_fail(VALUE error, VALUE success, VALUE failed, struct iconv_env_t* env, const char *mesg)
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{
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VALUE args[3];
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if (mesg && *mesg) {
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args[0] = rb_str_new2(mesg);
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}
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else if (TYPE(failed) != T_STRING || RSTRING_LEN(failed) < FAILED_MAXLEN) {
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args[0] = rb_inspect(failed);
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}
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else {
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args[0] = rb_inspect(rb_str_substr(failed, 0, FAILED_MAXLEN));
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rb_str_cat2(args[0], "...");
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}
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args[1] = success;
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args[2] = failed;
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if (env) {
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args[1] = env->append(rb_obj_dup(env->ret), success);
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if (env->argc > 0) {
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*(env->argv) = failed;
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args[2] = rb_ary_new4(env->argc, env->argv);
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}
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}
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return rb_class_new_instance(3, args, error);
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}
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static VALUE
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iconv_fail_retry(VALUE error, VALUE success, VALUE failed, struct iconv_env_t* env, const char *mesg)
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{
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error = iconv_fail(error, success, failed, env, mesg);
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if (!rb_block_given_p()) rb_exc_raise(error);
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rb_set_errinfo(error);
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return rb_yield(failed);
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}
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static VALUE
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rb_str_derive(VALUE str, const char* ptr, int len)
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{
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VALUE ret;
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if (NIL_P(str))
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return rb_str_new(ptr, len);
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if (RSTRING_PTR(str) + RSTRING_LEN(str) == ptr + len)
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ret = rb_str_subseq(str, ptr - RSTRING_PTR(str), len);
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else
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ret = rb_str_new(ptr, len);
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OBJ_INFECT(ret, str);
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return ret;
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}
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static VALUE
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iconv_convert(iconv_t cd, VALUE str, long start, long length, int toidx, struct iconv_env_t* env)
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{
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VALUE ret = Qfalse;
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VALUE error = Qfalse;
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VALUE rescue;
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const char *inptr, *instart;
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size_t inlen;
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/* I believe ONE CHARACTER never exceed this. */
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char buffer[BUFSIZ];
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char *outptr;
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size_t outlen;
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if (cd == (iconv_t)-1)
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rb_raise(rb_eArgError, "closed iconv");
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if (NIL_P(str)) {
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/* Reset output pointer or something. */
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inptr = "";
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inlen = 0;
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outptr = buffer;
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outlen = sizeof(buffer);
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error = iconv_try(cd, &inptr, &inlen, &outptr, &outlen);
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if (RTEST(error)) {
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unsigned int i;
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rescue = iconv_fail_retry(error, Qnil, Qnil, env, 0);
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if (TYPE(rescue) == T_ARRAY) {
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str = RARRAY_LEN(rescue) > 0 ? RARRAY_PTR(rescue)[0] : Qnil;
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}
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if (FIXNUM_P(str) && (i = FIX2INT(str)) <= 0xff) {
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char c = i;
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str = rb_str_new(&c, 1);
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}
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else if (!NIL_P(str)) {
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StringValue(str);
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}
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}
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inptr = NULL;
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length = 0;
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}
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else {
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int slen;
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StringValue(str);
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slen = RSTRING_LEN(str);
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inptr = RSTRING_PTR(str);
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inptr += start;
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if (length < 0 || length > start + slen)
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length = slen - start;
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}
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instart = inptr;
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inlen = length;
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do {
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char errmsg[50];
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const char *tmpstart = inptr;
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outptr = buffer;
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outlen = sizeof(buffer);
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errmsg[0] = 0;
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error = iconv_try(cd, &inptr, &inlen, &outptr, &outlen);
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|
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if (0 <= outlen && outlen <= sizeof(buffer)) {
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|
outlen = sizeof(buffer) - outlen;
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if (NIL_P(error) || /* something converted */
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|
outlen > (size_t)(inptr - tmpstart) || /* input can't contain output */
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(outlen < (size_t)(inptr - tmpstart) && inlen > 0) || /* something skipped */
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|
memcmp(buffer, tmpstart, outlen)) /* something differs */
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{
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if (NIL_P(str)) {
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ret = rb_str_new(buffer, outlen);
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if (toidx >= 0) rb_enc_associate_index(ret, toidx);
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}
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else {
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if (ret) {
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ret = rb_str_buf_cat(ret, instart, tmpstart - instart);
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}
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else {
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ret = rb_str_new(instart, tmpstart - instart);
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if (toidx >= 0) rb_enc_associate_index(ret, toidx);
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OBJ_INFECT(ret, str);
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}
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ret = rb_str_buf_cat(ret, buffer, outlen);
|
|
instart = inptr;
|
|
}
|
|
}
|
|
else if (!inlen) {
|
|
inptr = tmpstart + outlen;
|
|
}
|
|
}
|
|
else {
|
|
/* Some iconv() have a bug, return *outlen out of range */
|
|
sprintf(errmsg, "bug?(output length = %ld)", (long)(sizeof(buffer) - outlen));
|
|
error = rb_eIconvOutOfRange;
|
|
}
|
|
|
|
if (RTEST(error)) {
|
|
long len = 0;
|
|
|
|
if (!ret) {
|
|
ret = rb_str_derive(str, instart, inptr - instart);
|
|
if (toidx >= 0) rb_enc_associate_index(ret, toidx);
|
|
}
|
|
else if (inptr > instart) {
|
|
rb_str_cat(ret, instart, inptr - instart);
|
|
}
|
|
str = rb_str_derive(str, inptr, inlen);
|
|
rescue = iconv_fail_retry(error, ret, str, env, errmsg);
|
|
if (TYPE(rescue) == T_ARRAY) {
|
|
if ((len = RARRAY_LEN(rescue)) > 0)
|
|
rb_str_concat(ret, RARRAY_PTR(rescue)[0]);
|
|
if (len > 1 && !NIL_P(str = RARRAY_PTR(rescue)[1])) {
|
|
StringValue(str);
|
|
inlen = length = RSTRING_LEN(str);
|
|
instart = inptr = RSTRING_PTR(str);
|
|
continue;
|
|
}
|
|
}
|
|
else if (!NIL_P(rescue)) {
|
|
rb_str_concat(ret, rescue);
|
|
}
|
|
break;
|
|
}
|
|
} while (inlen > 0);
|
|
|
|
if (!ret) {
|
|
ret = rb_str_derive(str, instart, inptr - instart);
|
|
if (toidx >= 0) rb_enc_associate_index(ret, toidx);
|
|
}
|
|
else if (inptr > instart) {
|
|
rb_str_cat(ret, instart, inptr - instart);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static VALUE
|
|
iconv_s_allocate(VALUE klass)
|
|
{
|
|
return Data_Wrap_Struct(klass, 0, ICONV_FREE, 0);
|
|
}
|
|
|
|
static VALUE
|
|
get_iconv_opt_i(VALUE i, VALUE arg)
|
|
{
|
|
struct rb_iconv_opt_t *opt = (struct rb_iconv_opt_t *)arg;
|
|
VALUE name, val;
|
|
|
|
(void)opt;
|
|
i = rb_Array(i);
|
|
name = rb_ary_entry(i, 0);
|
|
val = rb_ary_entry(i, 1);
|
|
do {
|
|
if (SYMBOL_P(name)) {
|
|
ID id = SYM2ID(name);
|
|
if (id == id_transliterate) {
|
|
#ifdef ICONV_SET_TRANSLITERATE
|
|
opt->transliterate = val;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
break;
|
|
}
|
|
if (id == id_discard_ilseq) {
|
|
#ifdef ICONV_SET_DISCARD_ILSEQ
|
|
opt->discard_ilseq = val;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
const char *s = StringValueCStr(name);
|
|
if (strcmp(s, "transliterate") == 0) {
|
|
#ifdef ICONV_SET_TRANSLITERATE
|
|
opt->transliterate = val;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
break;
|
|
}
|
|
if (strcmp(s, "discard_ilseq") == 0) {
|
|
#ifdef ICONV_SET_DISCARD_ILSEQ
|
|
opt->discard_ilseq = val;
|
|
#else
|
|
rb_notimplement();
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
name = rb_inspect(name);
|
|
rb_raise(rb_eArgError, "unknown option - %s", StringValueCStr(name));
|
|
} while (0);
|
|
return Qnil;
|
|
}
|
|
|
|
static void
|
|
get_iconv_opt(struct rb_iconv_opt_t *opt, VALUE options)
|
|
{
|
|
opt->transliterate = Qundef;
|
|
opt->discard_ilseq = Qundef;
|
|
if (!NIL_P(options)) {
|
|
rb_block_call(options, rb_intern("each"), 0, 0, get_iconv_opt_i, (VALUE)opt);
|
|
}
|
|
}
|
|
|
|
#define iconv_ctl(self, func, val) (\
|
|
iconvctl(VALUE2ICONV(check_iconv(self)), func, (void *)&(val)) ? \
|
|
rb_sys_fail(#func) : (void)0)
|
|
|
|
/*
|
|
* Document-method: new
|
|
* call-seq: Iconv.new(to, from, [options])
|
|
*
|
|
* Creates new code converter from a coding-system designated with +from+
|
|
* to another one designated with +to+.
|
|
*
|
|
* === Parameters
|
|
*
|
|
* +to+:: encoding name for destination
|
|
* +from+:: encoding name for source
|
|
* +options+:: options for converter
|
|
*
|
|
* === Exceptions
|
|
*
|
|
* TypeError:: if +to+ or +from+ aren't String
|
|
* InvalidEncoding:: if designated converter couldn't find out
|
|
* SystemCallError:: if <tt>iconv_open(3)</tt> fails
|
|
*/
|
|
static VALUE
|
|
iconv_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE to, from, options;
|
|
struct rb_iconv_opt_t opt;
|
|
int idx;
|
|
|
|
rb_scan_args(argc, argv, "21", &to, &from, &options);
|
|
get_iconv_opt(&opt, options);
|
|
iconv_free(check_iconv(self));
|
|
DATA_PTR(self) = NULL;
|
|
DATA_PTR(self) = (void *)ICONV2VALUE(iconv_create(to, from, &opt, &idx));
|
|
if (idx >= 0) ENCODING_SET(self, idx);
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* Document-method: open
|
|
* call-seq: Iconv.open(to, from) { |iconv| ... }
|
|
*
|
|
* Equivalent to Iconv.new except that when it is called with a block, it
|
|
* yields with the new instance and closes it, and returns the result which
|
|
* returned from the block.
|
|
*/
|
|
static VALUE
|
|
iconv_s_open(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE to, from, options, cd;
|
|
struct rb_iconv_opt_t opt;
|
|
int idx;
|
|
|
|
rb_scan_args(argc, argv, "21", &to, &from, &options);
|
|
get_iconv_opt(&opt, options);
|
|
cd = ICONV2VALUE(iconv_create(to, from, &opt, &idx));
|
|
|
|
self = Data_Wrap_Struct(self, NULL, ICONV_FREE, (void *)cd);
|
|
if (idx >= 0) ENCODING_SET(self, idx);
|
|
|
|
if (rb_block_given_p()) {
|
|
return rb_ensure(rb_yield, self, (VALUE(*)())iconv_finish, self);
|
|
}
|
|
else {
|
|
return self;
|
|
}
|
|
}
|
|
|
|
static VALUE
|
|
iconv_s_convert(struct iconv_env_t* env)
|
|
{
|
|
VALUE last = 0;
|
|
|
|
for (; env->argc > 0; --env->argc, ++env->argv) {
|
|
VALUE s = iconv_convert(env->cd, last = *(env->argv),
|
|
0, -1, env->toidx, env);
|
|
env->append(env->ret, s);
|
|
}
|
|
|
|
if (!NIL_P(last)) {
|
|
VALUE s = iconv_convert(env->cd, Qnil, 0, 0, env->toidx, env);
|
|
if (RSTRING_LEN(s))
|
|
env->append(env->ret, s);
|
|
}
|
|
|
|
return env->ret;
|
|
}
|
|
|
|
/*
|
|
* Document-method: Iconv::iconv
|
|
* call-seq: Iconv.iconv(to, from, *strs)
|
|
*
|
|
* Shorthand for
|
|
* Iconv.open(to, from) { |cd|
|
|
* (strs + [nil]).collect { |s| cd.iconv(s) }
|
|
* }
|
|
*
|
|
* === Parameters
|
|
*
|
|
* <tt>to, from</tt>:: see Iconv.new
|
|
* <tt>strs</tt>:: strings to be converted
|
|
*
|
|
* === Exceptions
|
|
*
|
|
* Exceptions thrown by Iconv.new, Iconv.open and Iconv#iconv.
|
|
*/
|
|
static VALUE
|
|
iconv_s_iconv(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
struct iconv_env_t arg;
|
|
|
|
if (argc < 2) /* needs `to' and `from' arguments at least */
|
|
rb_raise(rb_eArgError, "wrong number of arguments (%d for %d)", argc, 2);
|
|
|
|
arg.argc = argc -= 2;
|
|
arg.argv = argv + 2;
|
|
arg.append = rb_ary_push;
|
|
arg.ret = rb_ary_new2(argc);
|
|
arg.cd = iconv_create(argv[0], argv[1], NULL, &arg.toidx);
|
|
return rb_ensure(iconv_s_convert, (VALUE)&arg, iconv_free, ICONV2VALUE(arg.cd));
|
|
}
|
|
|
|
/*
|
|
* Document-method: Iconv::conv
|
|
* call-seq: Iconv.conv(to, from, str)
|
|
*
|
|
* Shorthand for
|
|
* Iconv.iconv(to, from, str).join
|
|
* See Iconv.iconv.
|
|
*/
|
|
static VALUE
|
|
iconv_s_conv(VALUE self, VALUE to, VALUE from, VALUE str)
|
|
{
|
|
struct iconv_env_t arg;
|
|
|
|
arg.argc = 1;
|
|
arg.argv = &str;
|
|
arg.append = rb_str_append;
|
|
arg.ret = rb_str_new(0, 0);
|
|
arg.cd = iconv_create(to, from, NULL, &arg.toidx);
|
|
return rb_ensure(iconv_s_convert, (VALUE)&arg, iconv_free, ICONV2VALUE(arg.cd));
|
|
}
|
|
|
|
/*
|
|
* Document-method: list
|
|
* call-seq: Iconv.list {|*aliases| ... }
|
|
*
|
|
* Iterates each alias sets.
|
|
*/
|
|
|
|
#ifdef HAVE_ICONVLIST
|
|
struct iconv_name_list
|
|
{
|
|
unsigned int namescount;
|
|
const char *const *names;
|
|
VALUE array;
|
|
};
|
|
|
|
static VALUE
|
|
list_iconv_i(VALUE ptr)
|
|
{
|
|
struct iconv_name_list *p = (struct iconv_name_list *)ptr;
|
|
unsigned int i, namescount = p->namescount;
|
|
const char *const *names = p->names;
|
|
VALUE ary = rb_ary_new2(namescount);
|
|
|
|
for (i = 0; i < namescount; i++) {
|
|
rb_ary_push(ary, rb_str_new2(names[i]));
|
|
}
|
|
if (p->array) {
|
|
return rb_ary_push(p->array, ary);
|
|
}
|
|
return rb_yield(ary);
|
|
}
|
|
|
|
static int
|
|
list_iconv(unsigned int namescount, const char *const *names, void *data)
|
|
{
|
|
int *state = data;
|
|
struct iconv_name_list list;
|
|
|
|
list.namescount = namescount;
|
|
list.names = names;
|
|
list.array = ((VALUE *)data)[1];
|
|
rb_protect(list_iconv_i, (VALUE)&list, state);
|
|
return *state;
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAVE_ICONVLIST) || defined(HAVE___ICONV_FREE_LIST)
|
|
static VALUE
|
|
iconv_s_list(void)
|
|
{
|
|
#ifdef HAVE_ICONVLIST
|
|
int state;
|
|
VALUE args[2];
|
|
|
|
args[1] = rb_block_given_p() ? 0 : rb_ary_new();
|
|
iconvlist(list_iconv, args);
|
|
state = *(int *)args;
|
|
if (state) rb_jump_tag(state);
|
|
if (args[1]) return args[1];
|
|
#elif defined(HAVE___ICONV_FREE_LIST)
|
|
char **list;
|
|
size_t sz, i;
|
|
VALUE ary;
|
|
|
|
if (__iconv_get_list(&list, &sz)) return Qnil;
|
|
|
|
ary = rb_ary_new2(sz);
|
|
for (i = 0; i < sz; i++) {
|
|
rb_ary_push(ary, rb_str_new2(list[i]));
|
|
}
|
|
__iconv_free_list(list, sz);
|
|
|
|
if (!rb_block_given_p())
|
|
return ary;
|
|
for (i = 0; i < RARRAY_LEN(ary); i++) {
|
|
rb_yield(RARRAY_PTR(ary)[i]);
|
|
}
|
|
#endif
|
|
return Qnil;
|
|
}
|
|
#else
|
|
#define iconv_s_list rb_f_notimplement
|
|
#endif
|
|
|
|
/*
|
|
* Document-method: close
|
|
*
|
|
* Finishes conversion.
|
|
*
|
|
* After calling this, calling Iconv#iconv will cause an exception, but
|
|
* multiple calls of #close are guaranteed to end successfully.
|
|
*
|
|
* Returns a string containing the byte sequence to change the output buffer to
|
|
* its initial shift state.
|
|
*/
|
|
static VALUE
|
|
iconv_init_state(VALUE self)
|
|
{
|
|
iconv_t cd = VALUE2ICONV((VALUE)DATA_PTR(self));
|
|
DATA_PTR(self) = NULL;
|
|
return iconv_convert(cd, Qnil, 0, 0, ENCODING_GET(self), NULL);
|
|
}
|
|
|
|
static VALUE
|
|
iconv_finish(VALUE self)
|
|
{
|
|
VALUE cd = check_iconv(self);
|
|
|
|
if (!cd) return Qnil;
|
|
return rb_ensure(iconv_init_state, self, iconv_free, cd);
|
|
}
|
|
|
|
/*
|
|
* Document-method: Iconv#iconv
|
|
* call-seq: iconv(str, start=0, length=-1)
|
|
*
|
|
* Converts string and returns the result.
|
|
* * If +str+ is a String, converts <tt>str[start, length]</tt> and returns the converted string.
|
|
* * If +str+ is +nil+, places converter itself into initial shift state and
|
|
* just returns a string containing the byte sequence to change the output
|
|
* buffer to its initial shift state.
|
|
* * Otherwise, raises an exception.
|
|
*
|
|
* === Parameters
|
|
*
|
|
* str:: string to be converted, or nil
|
|
* start:: starting offset
|
|
* length:: conversion length; nil or -1 means whole the string from start
|
|
*
|
|
* === Exceptions
|
|
*
|
|
* * IconvIllegalSequence
|
|
* * IconvInvalidCharacter
|
|
* * IconvOutOfRange
|
|
*
|
|
* === Examples
|
|
*
|
|
* See the Iconv documentation.
|
|
*/
|
|
static VALUE
|
|
iconv_iconv(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE str, n1, n2;
|
|
VALUE cd = check_iconv(self);
|
|
long start = 0, length = 0, slen = 0;
|
|
|
|
rb_scan_args(argc, argv, "12", &str, &n1, &n2);
|
|
if (!NIL_P(str)) {
|
|
VALUE n = rb_str_length(StringValue(str));
|
|
slen = NUM2LONG(n);
|
|
}
|
|
if (argc != 2 || !RTEST(rb_range_beg_len(n1, &start, &length, slen, 0))) {
|
|
if (NIL_P(n1) || ((start = NUM2LONG(n1)) < 0 ? (start += slen) >= 0 : start < slen)) {
|
|
length = NIL_P(n2) ? -1 : NUM2LONG(n2);
|
|
}
|
|
}
|
|
if (start > 0 || length > 0) {
|
|
rb_encoding *enc = rb_enc_get(str);
|
|
const char *s = RSTRING_PTR(str), *e = s + RSTRING_LEN(str);
|
|
const char *ps = s;
|
|
if (start > 0) {
|
|
start = (ps = rb_enc_nth(s, e, start, enc)) - s;
|
|
}
|
|
if (length > 0) {
|
|
length = rb_enc_nth(ps, e, length, enc) - ps;
|
|
}
|
|
}
|
|
|
|
return iconv_convert(VALUE2ICONV(cd), str, start, length, ENCODING_GET(self), NULL);
|
|
}
|
|
|
|
/*
|
|
* Document-method: conv
|
|
* call-seq: conv(str...)
|
|
*
|
|
* Equivalent to
|
|
*
|
|
* iconv(nil, str..., nil).join
|
|
*/
|
|
static VALUE
|
|
iconv_conv(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
iconv_t cd = VALUE2ICONV(check_iconv(self));
|
|
VALUE str, s;
|
|
int toidx = ENCODING_GET(self);
|
|
|
|
str = iconv_convert(cd, Qnil, 0, 0, toidx, NULL);
|
|
if (argc > 0) {
|
|
do {
|
|
s = iconv_convert(cd, *argv++, 0, -1, toidx, NULL);
|
|
if (RSTRING_LEN(s))
|
|
rb_str_buf_append(str, s);
|
|
} while (--argc);
|
|
s = iconv_convert(cd, Qnil, 0, 0, toidx, NULL);
|
|
if (RSTRING_LEN(s))
|
|
rb_str_buf_append(str, s);
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
#ifdef ICONV_TRIVIALP
|
|
/*
|
|
* Document-method: trivial?
|
|
* call-seq: trivial?
|
|
*
|
|
* Returns trivial flag.
|
|
*/
|
|
static VALUE
|
|
iconv_trivialp(VALUE self)
|
|
{
|
|
int trivial = 0;
|
|
iconv_ctl(self, ICONV_TRIVIALP, trivial);
|
|
if (trivial) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
#else
|
|
#define iconv_trivialp rb_f_notimplement
|
|
#endif
|
|
|
|
#ifdef ICONV_GET_TRANSLITERATE
|
|
/*
|
|
* Document-method: transliterate?
|
|
* call-seq: transliterate?
|
|
*
|
|
* Returns transliterate flag.
|
|
*/
|
|
static VALUE
|
|
iconv_get_transliterate(VALUE self)
|
|
{
|
|
int trans = 0;
|
|
iconv_ctl(self, ICONV_GET_TRANSLITERATE, trans);
|
|
if (trans) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
#else
|
|
#define iconv_get_transliterate rb_f_notimplement
|
|
#endif
|
|
|
|
#ifdef ICONV_SET_TRANSLITERATE
|
|
/*
|
|
* Document-method: transliterate=
|
|
* call-seq: cd.transliterate = flag
|
|
*
|
|
* Sets transliterate flag.
|
|
*/
|
|
static VALUE
|
|
iconv_set_transliterate(VALUE self, VALUE transliterate)
|
|
{
|
|
int trans = RTEST(transliterate);
|
|
iconv_ctl(self, ICONV_SET_TRANSLITERATE, trans);
|
|
return self;
|
|
}
|
|
#else
|
|
#define iconv_set_transliterate rb_f_notimplement
|
|
#endif
|
|
|
|
#ifdef ICONV_GET_DISCARD_ILSEQ
|
|
/*
|
|
* Document-method: discard_ilseq?
|
|
* call-seq: discard_ilseq?
|
|
*
|
|
* Returns discard_ilseq flag.
|
|
*/
|
|
static VALUE
|
|
iconv_get_discard_ilseq(VALUE self)
|
|
{
|
|
int dis = 0;
|
|
iconv_ctl(self, ICONV_GET_DISCARD_ILSEQ, dis);
|
|
if (dis) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
#else
|
|
#define iconv_get_discard_ilseq rb_f_notimplement
|
|
#endif
|
|
|
|
#ifdef ICONV_SET_DISCARD_ILSEQ
|
|
/*
|
|
* Document-method: discard_ilseq=
|
|
* call-seq: cd.discard_ilseq = flag
|
|
*
|
|
* Sets discard_ilseq flag.
|
|
*/
|
|
static VALUE
|
|
iconv_set_discard_ilseq(VALUE self, VALUE discard_ilseq)
|
|
{
|
|
int dis = RTEST(discard_ilseq);
|
|
iconv_ctl(self, ICONV_SET_DISCARD_ILSEQ, dis);
|
|
return self;
|
|
}
|
|
#else
|
|
#define iconv_set_discard_ilseq rb_f_notimplement
|
|
#endif
|
|
|
|
/*
|
|
* Document-method: ctlmethods
|
|
* call-seq: Iconv.ctlmethods => array
|
|
*
|
|
* Returns available iconvctl() method list.
|
|
*/
|
|
static VALUE
|
|
iconv_s_ctlmethods(VALUE klass)
|
|
{
|
|
VALUE ary = rb_ary_new();
|
|
#ifdef ICONV_TRIVIALP
|
|
rb_ary_push(ary, ID2SYM(rb_intern("trivial?")));
|
|
#endif
|
|
#ifdef ICONV_GET_TRANSLITERATE
|
|
rb_ary_push(ary, ID2SYM(rb_intern("transliterate?")));
|
|
#endif
|
|
#ifdef ICONV_SET_TRANSLITERATE
|
|
rb_ary_push(ary, ID2SYM(rb_intern("transliterate=")));
|
|
#endif
|
|
#ifdef ICONV_GET_DISCARD_ILSEQ
|
|
rb_ary_push(ary, ID2SYM(rb_intern("discard_ilseq?")));
|
|
#endif
|
|
#ifdef ICONV_SET_DISCARD_ILSEQ
|
|
rb_ary_push(ary, ID2SYM(rb_intern("discard_ilseq=")));
|
|
#endif
|
|
return ary;
|
|
}
|
|
|
|
/*
|
|
* Document-class: Iconv::Failure
|
|
*
|
|
* Base attributes for Iconv exceptions.
|
|
*/
|
|
|
|
/*
|
|
* Document-method: success
|
|
* call-seq: success
|
|
*
|
|
* Returns string(s) translated successfully until the exception occurred.
|
|
* * In the case of failure occurred within Iconv.iconv, returned
|
|
* value is an array of strings translated successfully preceding
|
|
* failure and the last element is string on the way.
|
|
*/
|
|
static VALUE
|
|
iconv_failure_success(VALUE self)
|
|
{
|
|
return rb_attr_get(self, rb_success);
|
|
}
|
|
|
|
/*
|
|
* Document-method: failed
|
|
* call-seq: failed
|
|
*
|
|
* Returns substring of the original string passed to Iconv that starts at the
|
|
* character caused the exception.
|
|
*/
|
|
static VALUE
|
|
iconv_failure_failed(VALUE self)
|
|
{
|
|
return rb_attr_get(self, rb_failed);
|
|
}
|
|
|
|
/*
|
|
* Document-method: inspect
|
|
* call-seq: inspect
|
|
*
|
|
* Returns inspected string like as: #<_class_: _success_, _failed_>
|
|
*/
|
|
static VALUE
|
|
iconv_failure_inspect(VALUE self)
|
|
{
|
|
const char *cname = rb_class2name(CLASS_OF(self));
|
|
VALUE success = rb_attr_get(self, rb_success);
|
|
VALUE failed = rb_attr_get(self, rb_failed);
|
|
VALUE str = rb_str_buf_cat2(rb_str_new2("#<"), cname);
|
|
str = rb_str_buf_cat(str, ": ", 2);
|
|
str = rb_str_buf_append(str, rb_inspect(success));
|
|
str = rb_str_buf_cat(str, ", ", 2);
|
|
str = rb_str_buf_append(str, rb_inspect(failed));
|
|
return rb_str_buf_cat(str, ">", 1);
|
|
}
|
|
|
|
/*
|
|
* Document-class: Iconv::InvalidEncoding
|
|
*
|
|
* Requested coding-system is not available on this system.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Iconv::IllegalSequence
|
|
*
|
|
* Input conversion stopped due to an input byte that does not belong to
|
|
* the input codeset, or the output codeset does not contain the
|
|
* character.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Iconv::InvalidCharacter
|
|
*
|
|
* Input conversion stopped due to an incomplete character or shift
|
|
* sequence at the end of the input buffer.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Iconv::OutOfRange
|
|
*
|
|
* Iconv library internal error. Must not occur.
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Iconv::BrokenLibrary
|
|
*
|
|
* Detected a bug of underlying iconv(3) libray.
|
|
* * returns an error without setting errno properly
|
|
*/
|
|
|
|
void
|
|
Init_iconv(void)
|
|
{
|
|
VALUE rb_cIconv = rb_define_class("Iconv", rb_cData);
|
|
|
|
rb_define_alloc_func(rb_cIconv, iconv_s_allocate);
|
|
rb_define_singleton_method(rb_cIconv, "open", iconv_s_open, -1);
|
|
rb_define_singleton_method(rb_cIconv, "iconv", iconv_s_iconv, -1);
|
|
rb_define_singleton_method(rb_cIconv, "conv", iconv_s_conv, 3);
|
|
rb_define_singleton_method(rb_cIconv, "list", iconv_s_list, 0);
|
|
rb_define_singleton_method(rb_cIconv, "ctlmethods", iconv_s_ctlmethods, 0);
|
|
rb_define_method(rb_cIconv, "initialize", iconv_initialize, -1);
|
|
rb_define_method(rb_cIconv, "close", iconv_finish, 0);
|
|
rb_define_method(rb_cIconv, "iconv", iconv_iconv, -1);
|
|
rb_define_method(rb_cIconv, "conv", iconv_conv, -1);
|
|
rb_define_method(rb_cIconv, "trivial?", iconv_trivialp, 0);
|
|
rb_define_method(rb_cIconv, "transliterate?", iconv_get_transliterate, 0);
|
|
rb_define_method(rb_cIconv, "transliterate=", iconv_set_transliterate, 1);
|
|
rb_define_method(rb_cIconv, "discard_ilseq?", iconv_get_discard_ilseq, 0);
|
|
rb_define_method(rb_cIconv, "discard_ilseq=", iconv_set_discard_ilseq, 1);
|
|
|
|
rb_eIconvFailure = rb_define_module_under(rb_cIconv, "Failure");
|
|
rb_define_method(rb_eIconvFailure, "initialize", iconv_failure_initialize, 3);
|
|
rb_define_method(rb_eIconvFailure, "success", iconv_failure_success, 0);
|
|
rb_define_method(rb_eIconvFailure, "failed", iconv_failure_failed, 0);
|
|
rb_define_method(rb_eIconvFailure, "inspect", iconv_failure_inspect, 0);
|
|
|
|
rb_eIconvInvalidEncoding = rb_define_class_under(rb_cIconv, "InvalidEncoding", rb_eArgError);
|
|
rb_eIconvIllegalSeq = rb_define_class_under(rb_cIconv, "IllegalSequence", rb_eArgError);
|
|
rb_eIconvInvalidChar = rb_define_class_under(rb_cIconv, "InvalidCharacter", rb_eArgError);
|
|
rb_eIconvOutOfRange = rb_define_class_under(rb_cIconv, "OutOfRange", rb_eRuntimeError);
|
|
rb_eIconvBrokenLibrary = rb_define_class_under(rb_cIconv, "BrokenLibrary", rb_eRuntimeError);
|
|
rb_include_module(rb_eIconvInvalidEncoding, rb_eIconvFailure);
|
|
rb_include_module(rb_eIconvIllegalSeq, rb_eIconvFailure);
|
|
rb_include_module(rb_eIconvInvalidChar, rb_eIconvFailure);
|
|
rb_include_module(rb_eIconvOutOfRange, rb_eIconvFailure);
|
|
rb_include_module(rb_eIconvBrokenLibrary, rb_eIconvFailure);
|
|
|
|
rb_success = rb_intern("success");
|
|
rb_failed = rb_intern("failed");
|
|
id_transliterate = rb_intern("transliterate");
|
|
id_discard_ilseq = rb_intern("discard_ilseq");
|
|
|
|
rb_gc_register_address(&charset_map);
|
|
charset_map = rb_hash_new();
|
|
rb_define_singleton_method(rb_cIconv, "charset_map", charset_map_get, 0);
|
|
}
|
|
|