diff options
author | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-08-25 04:07:20 +0000 |
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committer | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-08-25 04:07:20 +0000 |
commit | 5678ab5182b27d684cf7a4e7c6c48f3657389d31 (patch) | |
tree | eb479c79fac87034248482c11e9d4fb495435e24 | |
parent | 6527bcfe30e84c0b3f28b039f251ced47218c32c (diff) | |
download | ruby-5678ab5182b27d684cf7a4e7c6c48f3657389d31.tar.gz |
encoding.c: added.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13263 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | encoding.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/encoding.c b/encoding.c new file mode 100644 index 0000000000..eed384fb0d --- /dev/null +++ b/encoding.c @@ -0,0 +1,229 @@ +/********************************************************************** + + encoding.c - + + $Author: matz $ + $Date: 2007-05-24 17:22:33 +0900 (Thu, 24 May 2007) $ + created at: Thu May 24 17:23:27 JST 2007 + + Copyright (C) 2007 Yukihiro Matsumoto + +**********************************************************************/ + +#include "ruby/ruby.h" +#include "ruby/encoding.h" +#include "regenc.h" + +static ID id_encoding; + +struct rb_encoding_entry { + const char *name; + rb_encoding *enc; +}; + +static struct rb_encoding_entry *enc_table; +static int enc_table_size; + +void +rb_enc_register(const char *name, rb_encoding *encoding) +{ + struct rb_encoding_entry *ent; + + if (!enc_table) { + enc_table = malloc(sizeof(struct rb_encoding_entry)); + enc_table_size = 1; + } + else { + enc_table_size++; + enc_table = realloc(enc_table, sizeof(struct rb_encoding_entry)*enc_table_size); + } + ent = &enc_table[enc_table_size-1]; + ent->name = name; + ent->enc = encoding; +} + +void +rb_enc_init(void) +{ + rb_enc_register("ascii", ONIG_ENCODING_ASCII); + rb_enc_register("sjis", ONIG_ENCODING_SJIS); + rb_enc_register("euc-jp", ONIG_ENCODING_EUC_JP); + rb_enc_register("utf-8", ONIG_ENCODING_UTF8); +} + +rb_encoding * +rb_enc_from_index(int index) +{ + if (!enc_table) { + rb_enc_init(); + } + if (index < 0 || enc_table_size <= index) { + return 0; + } + return enc_table[index].enc; +} + +rb_encoding * +rb_enc_find(const char *name) +{ + int i; + + if (!enc_table) { + rb_enc_init(); + } + for (i=0; i<enc_table_size; i++) { + if (strcmp(name, enc_table[i].name) == 0) { + return enc_table[i].enc; + } + } + return ONIG_ENCODING_ASCII; +} + +void +rb_enc_associate_index(VALUE obj, int idx) +{ + if (idx < ENCODING_INLINE_MAX) { + ENCODING_SET(obj, idx); + return; + } + ENCODING_SET(obj, ENCODING_INLINE_MAX); + if (!id_encoding) { + id_encoding = rb_intern("encoding"); + } + rb_ivar_set(obj, id_encoding, INT2NUM(idx)); + return; +} + +int +rb_enc_to_index(rb_encoding *enc) +{ + int i; + + if (!enc) return 0; + for (i=0; i<enc_table_size; i++) { + if (enc_table[i].enc == enc) { + return i; + } + } + return 0; +} + +void +rb_enc_associate(VALUE obj, rb_encoding *enc) +{ + rb_enc_associate_index(obj, rb_enc_to_index(enc)); +} + +int +rb_enc_get_index(VALUE obj) +{ + int i = ENCODING_GET(obj); + + if (i == ENCODING_INLINE_MAX) { + VALUE iv; + + if (!id_encoding) { + id_encoding = rb_intern("encoding"); + } + iv = rb_ivar_get(obj, id_encoding); + i = NUM2INT(iv); + } + return i; +} + +rb_encoding* +rb_enc_get(VALUE obj) +{ + return rb_enc_from_index(rb_enc_get_index(obj)); +} + +rb_encoding* +rb_enc_check(VALUE str1, VALUE str2) +{ + int idx1, idx2; + rb_encoding *enc; + + idx1 = rb_enc_get_index(str1); + idx2 = rb_enc_get_index(str2); + + if (idx1 == idx2) { + return rb_enc_from_index(idx1); + } + + if (idx1 == 0) { + enc = rb_enc_from_index(idx2); +#if 0 + if (m17n_asciicompat(enc)) { + return enc; + } +#endif + } + else if (idx2 == 0) { + enc = rb_enc_from_index(idx1); +#if 0 + if (m17n_asciicompat(enc)) { + return enc; + } +#endif + } + rb_raise(rb_eArgError, "character encodings differ"); +} + +void +rb_enc_copy(VALUE obj1, VALUE obj2) +{ + rb_enc_associate_index(obj1, rb_enc_get_index(obj2)); +} + + +char* +rb_enc_nth(const char *p, const char *e, int nth, rb_encoding *enc) +{ + int c; + + if (rb_enc_mbmaxlen(enc) == 1) { + p += nth; + } + else if (rb_enc_mbmaxlen(enc) == rb_enc_mbminlen(enc)) { + p += nth * rb_enc_mbmaxlen(enc); + } + else { + for (c=0; p<e && nth--; c++) { + int n = rb_enc_mbclen(p, enc); + + if (n == 0) return 0; + p += n; + } + } + return (char*)p; +} + +long +rb_enc_strlen(const char *p, const char *e, rb_encoding *enc) +{ + long c; + + if (rb_enc_mbmaxlen(enc) == rb_enc_mbminlen(enc)) { + return (e - p) / rb_enc_mbminlen(enc); + } + + for (c=0; p<e; c++) { + int n = rb_enc_mbclen(p, enc); + + if (n == 0) return -1; + p += n; + } + return c; +} + +int +rb_enc_toupper(int c, rb_encoding *enc) +{ + return (ONIGENC_IS_ASCII_CODE(c)?ONIGENC_ASCII_CODE_TO_UPPER_CASE(c):(c)); +} + +int +rb_enc_tolower(int c, rb_encoding *enc) +{ + return (ONIGENC_IS_ASCII_CODE(c)?ONIGENC_ASCII_CODE_TO_LOWER_CASE(c):(c)); +} |