diff options
Diffstat (limited to 'trunk/encoding.c')
| -rw-r--r-- | trunk/encoding.c | 1240 |
1 files changed, 0 insertions, 1240 deletions
diff --git a/trunk/encoding.c b/trunk/encoding.c deleted file mode 100644 index 5e8412a026..0000000000 --- a/trunk/encoding.c +++ /dev/null @@ -1,1240 +0,0 @@ -/********************************************************************** - - encoding.c - - - $Author$ - 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" -#include <ctype.h> -#ifdef HAVE_LANGINFO_H -#include <langinfo.h> -#endif -#include "ruby/util.h" - -static ID id_encoding, id_base_encoding; -VALUE rb_cEncoding; -static VALUE rb_encoding_list; - -struct rb_encoding_entry { - const char *name; - rb_encoding *enc; - rb_encoding *base; -}; - -static struct { - struct rb_encoding_entry *list; - int count; - int size; - st_table *names; -} enc_table; - -void rb_enc_init(void); - -#define ENCODING_COUNT ENCINDEX_BUILTIN_MAX - -#define enc_autoload_p(enc) (!rb_enc_mbmaxlen(enc)) - -static int load_encoding(const char *name); -static VALUE enc_base_encoding(VALUE self); - -static void -enc_mark(void *ptr) -{ -} - -static VALUE -enc_new(rb_encoding *encoding) -{ - return Data_Wrap_Struct(rb_cEncoding, enc_mark, 0, encoding); -} - -VALUE -rb_enc_from_encoding(rb_encoding *encoding) -{ - VALUE list, enc; - int idx; - - if (!encoding) return Qnil; - idx = ENC_TO_ENCINDEX(encoding); - if (!(list = rb_encoding_list)) { - rb_bug("rb_enc_from_encoding(%d\"%s\"): no rb_encoding_list", - idx, rb_enc_name(encoding)); - } - enc = rb_ary_entry(list, idx); - if (NIL_P(enc)) { - rb_bug("rb_enc_from_encoding(%d\"%s\"): not created yet", - idx, rb_enc_name(encoding)); - } - return enc; -} - -static int enc_autoload(rb_encoding *); - -static int -check_encoding(rb_encoding *enc) -{ - int index = rb_enc_to_index(enc); - if (rb_enc_from_index(index) != enc) - return -1; - if (enc_autoload_p(enc)) { - index = enc_autoload(enc); - } - return index; -} - -static int -enc_check_encoding(VALUE obj) -{ - if (SPECIAL_CONST_P(obj) || BUILTIN_TYPE(obj) != T_DATA || - RDATA(obj)->dmark != enc_mark) { - return -1; - } - return check_encoding(RDATA(obj)->data); -} - -static int -must_encoding(VALUE enc) -{ - int index = enc_check_encoding(enc); - if (index < 0) { - rb_raise(rb_eTypeError, "wrong argument type %s (expected Encoding)", - rb_obj_classname(enc)); - } - return index; -} - -int -rb_to_encoding_index(VALUE enc) -{ - int idx; - - idx = enc_check_encoding(enc); - if (idx >= 0) { - return idx; - } - else if (NIL_P(enc = rb_check_string_type(enc))) { - return -1; - } - if (!rb_enc_asciicompat(rb_enc_get(enc))) { - return -1; - } - return rb_enc_find_index(StringValueCStr(enc)); -} - -static rb_encoding * -to_encoding(VALUE enc) -{ - int idx; - - StringValue(enc); - if (!rb_enc_asciicompat(rb_enc_get(enc))) { - rb_raise(rb_eArgError, "invalid name encoding (non ASCII)"); - } - idx = rb_enc_find_index(StringValueCStr(enc)); - if (idx < 0) { - rb_raise(rb_eArgError, "unknown encoding name - %s", RSTRING_PTR(enc)); - } - return rb_enc_from_index(idx); -} - -rb_encoding * -rb_to_encoding(VALUE enc) -{ - if (enc_check_encoding(enc) >= 0) return RDATA(enc)->data; - return to_encoding(enc); -} - -void -rb_gc_mark_encodings(void) -{ -} - -static int -enc_table_expand(int newsize) -{ - struct rb_encoding_entry *ent; - int count = newsize; - - if (enc_table.size >= newsize) return newsize; - newsize = (newsize + 7) / 8 * 8; - ent = realloc(enc_table.list, sizeof(*enc_table.list) * newsize); - if (!ent) return -1; - memset(ent + enc_table.size, 0, sizeof(*ent)*(newsize - enc_table.size)); - enc_table.list = ent; - enc_table.size = newsize; - return count; -} - -static int -enc_register_at(int index, const char *name, rb_encoding *encoding) -{ - struct rb_encoding_entry *ent = &enc_table.list[index]; - VALUE list; - - if (!ent->name) { - ent->name = name = strdup(name); - } - else if (STRCASECMP(name, ent->name)) { - return -1; - } - if (!ent->enc) { - ent->enc = xmalloc(sizeof(rb_encoding)); - } - if (encoding) { - *ent->enc = *encoding; - } - else { - memset(ent->enc, 0, sizeof(*ent->enc)); - } - encoding = ent->enc; - encoding->name = name; - encoding->ruby_encoding_index = index; - st_insert(enc_table.names, (st_data_t)name, (st_data_t)index); - list = rb_encoding_list; - if (list && NIL_P(rb_ary_entry(list, index))) { - /* initialize encoding data */ - rb_ary_store(list, index, enc_new(encoding)); - } - return index; -} - -static int -enc_register(const char *name, rb_encoding *encoding) -{ - int index = enc_table.count; - - if ((index = enc_table_expand(index + 1)) < 0) return -1; - enc_table.count = index; - return enc_register_at(index - 1, name, encoding); -} - -static void set_encoding_const(const char *, rb_encoding *); -int rb_enc_registered(const char *name); - -int -rb_enc_register(const char *name, rb_encoding *encoding) -{ - int index = rb_enc_registered(name); - - if (index >= 0) { - rb_encoding *oldenc = rb_enc_from_index(index); - if (STRCASECMP(name, rb_enc_name(oldenc))) { - index = enc_register(name, encoding); - } - else if (enc_autoload_p(oldenc) || !ENC_DUMMY_P(oldenc)) { - enc_register_at(index, name, encoding); - } - else { - rb_raise(rb_eArgError, "encoding %s is already registered", name); - } - } - else { - index = enc_register(name, encoding); - set_encoding_const(name, rb_enc_from_index(index)); - } - return index; -} - -void -rb_encdb_declare(const char *name) -{ - int idx = rb_enc_registered(name); - if (idx < 0) { - idx = enc_register(name, 0); - } - set_encoding_const(name, rb_enc_from_index(idx)); -} - -static void -enc_check_duplication(const char *name) -{ - if (rb_enc_registered(name) >= 0) { - rb_raise(rb_eArgError, "encoding %s is already registered", name); - } -} - -static rb_encoding* -set_base_encoding(int index, rb_encoding *base) -{ - rb_encoding *enc = enc_table.list[index].enc; - - enc_table.list[index].base = base; - if (rb_enc_dummy_p(base)) ENC_SET_DUMMY(enc); - return enc; -} - -int -rb_enc_replicate(const char *name, rb_encoding *encoding) -{ - int idx; - - enc_check_duplication(name); - idx = enc_register(name, encoding); - set_base_encoding(idx, encoding); - set_encoding_const(name, rb_enc_from_index(idx)); - return idx; -} - -static int -enc_replicate(int idx, const char *name, rb_encoding *origenc) -{ - if (idx < 0) { - idx = enc_register(name, origenc); - } - else { - idx = enc_register_at(idx, name, origenc); - } - if (idx >= 0) { - set_base_encoding(idx, origenc); - set_encoding_const(name, rb_enc_from_index(idx)); - } - return idx; -} - -int -rb_encdb_replicate(const char *name, const char *orig) -{ - int origidx = rb_enc_registered(orig); - int idx = rb_enc_registered(name); - - if (origidx < 0) { - origidx = enc_register(orig, 0); - } - return enc_replicate(idx, name, rb_enc_from_index(origidx)); -} - -int -rb_define_dummy_encoding(const char *name) -{ - int index = rb_enc_replicate(name, rb_ascii8bit_encoding()); - rb_encoding *enc = enc_table.list[index].enc; - - ENC_SET_DUMMY(enc); - return index; -} - -int -rb_encdb_dummy(const char *name) -{ - int index = enc_replicate(rb_enc_registered(name), name, - rb_ascii8bit_encoding()); - rb_encoding *enc = enc_table.list[index].enc; - - ENC_SET_DUMMY(enc); - return index; -} - -/* - * call-seq: - * enc.dummy? => true or false - * - * Returns true for dummy encodings. - * A dummy encoding is an encoding for which character handling is not properly - * implemented. - * It is used for stateful encodings. - * - * Encoding::ISO_2022_JP.dummy? #=> true - * Encoding::UTF_8.dummy? #=> false - * - */ -static VALUE -enc_dummy_p(VALUE enc) -{ - return ENC_DUMMY_P(enc_table.list[must_encoding(enc)].enc) ? Qtrue : Qfalse; -} - -static int -enc_alias(const char *alias, int idx) -{ - alias = strdup(alias); - st_insert(enc_table.names, (st_data_t)alias, (st_data_t)idx); - set_encoding_const(alias, rb_enc_from_index(idx)); - return idx; -} - -int -rb_enc_alias(const char *alias, const char *orig) -{ - int idx; - - enc_check_duplication(alias); - if (!enc_table.list) { - rb_enc_init(); - } - if ((idx = rb_enc_find_index(orig)) < 0) { - return -1; - } - return enc_alias(alias, idx); -} - -int -rb_encdb_alias(const char *alias, const char *orig) -{ - int idx = rb_enc_registered(orig); - - if (idx < 0) { - idx = enc_register(orig, 0); - } - return enc_alias(alias, idx); -} - -enum { - ENCINDEX_ASCII, - ENCINDEX_UTF_8, - ENCINDEX_US_ASCII, - ENCINDEX_BUILTIN_MAX -}; - -extern rb_encoding OnigEncodingUTF_8; -extern rb_encoding OnigEncodingUS_ASCII; - -void -rb_enc_init(void) -{ - enc_table_expand(ENCODING_COUNT + 1); - if (!enc_table.names) { - enc_table.names = st_init_strcasetable(); - } -#define ENC_REGISTER(enc) enc_register_at(ENCINDEX_##enc, rb_enc_name(&OnigEncoding##enc), &OnigEncoding##enc) - ENC_REGISTER(ASCII); - ENC_REGISTER(UTF_8); - ENC_REGISTER(US_ASCII); -#undef ENC_REGISTER - enc_table.count = ENCINDEX_BUILTIN_MAX; -} - -rb_encoding * -rb_enc_from_index(int index) -{ - if (!enc_table.list) { - rb_enc_init(); - } - if (index < 0 || enc_table.count <= index) { - return 0; - } - return enc_table.list[index].enc; -} - -int -rb_enc_registered(const char *name) -{ - st_data_t idx = 0; - - if (!name) return -1; - if (!enc_table.list) return -1; - if (st_lookup(enc_table.names, (st_data_t)name, &idx)) { - return (int)idx; - } - return -1; -} - -static VALUE -require_enc(VALUE enclib) -{ - return rb_require_safe(enclib, rb_safe_level()); -} - -static int -load_encoding(const char *name) -{ - VALUE enclib = rb_sprintf("enc/%s", name); - VALUE verbose = ruby_verbose; - VALUE debug = ruby_debug; - VALUE loaded; - char *s = RSTRING_PTR(enclib) + 4, *e = RSTRING_END(enclib); - int idx; - - while (s < e) { - if (!ISALNUM(*s)) *s = '_'; - else if (ISUPPER(*s)) *s = TOLOWER(*s); - ++s; - } - OBJ_FREEZE(enclib); - ruby_verbose = Qfalse; - ruby_debug = Qfalse; - loaded = rb_protect(require_enc, enclib, 0); - ruby_verbose = verbose; - ruby_debug = debug; - rb_set_errinfo(Qnil); - if (NIL_P(loaded)) return -1; - if ((idx = rb_enc_registered(name)) < 0) return -1; - if (enc_autoload_p(enc_table.list[idx].enc)) return -1; - return idx; -} - -static int -enc_autoload(rb_encoding *enc) -{ - int i; - rb_encoding *base = enc_table.list[ENC_TO_ENCINDEX(enc)].base; - - if (base) { - i = 0; - do { - if (i >= enc_table.count) return -1; - } while (enc_table.list[i].enc != base && (++i, 1)); - if (enc_autoload_p(base)) { - if (enc_autoload(base) < 0) return -1; - } - i = ENC_TO_ENCINDEX(enc); - enc_register_at(i, rb_enc_name(enc), base); - } - else { - i = load_encoding(rb_enc_name(enc)); - } - return i; -} - -int -rb_enc_find_index(const char *name) -{ - int i = rb_enc_registered(name); - rb_encoding *enc; - - if (i < 0) { - i = load_encoding(name); - } - else if (enc_autoload_p(enc = rb_enc_from_index(i))) { - if (enc_autoload(enc) < 0) { - rb_warn("failed to load encoding (%s); use ASCII-8BIT instead", - name); - return 0; - } - } - return i; -} - -rb_encoding * -rb_enc_find(const char *name) -{ - int idx = rb_enc_find_index(name); - if (idx < 0) idx = 0; - return rb_enc_from_index(idx); -} - -static inline int -enc_capable(VALUE obj) -{ - if (SPECIAL_CONST_P(obj)) return Qfalse; - switch (BUILTIN_TYPE(obj)) { - case T_STRING: - case T_REGEXP: - case T_FILE: - return Qtrue; - case T_DATA: - if (RDATA(obj)->dmark == enc_mark) return Qtrue; - default: - return Qfalse; - } -} - -ID -rb_id_encoding(void) -{ - CONST_ID(id_encoding, "encoding"); - return id_encoding; -} - -int -rb_enc_get_index(VALUE obj) -{ - int i; - - i = ENCODING_GET_INLINED(obj); - if (i == ENCODING_INLINE_MAX) { - VALUE iv; - - iv = rb_ivar_get(obj, rb_id_encoding()); - i = NUM2INT(iv); - } - return i; -} - -void -rb_enc_set_index(VALUE obj, int idx) -{ - if (idx < ENCODING_INLINE_MAX) { - ENCODING_SET_INLINED(obj, idx); - return; - } - ENCODING_SET_INLINED(obj, ENCODING_INLINE_MAX); - rb_ivar_set(obj, rb_id_encoding(), INT2NUM(idx)); - return; -} - -VALUE -rb_enc_associate_index(VALUE obj, int idx) -{ -/* enc_check_capable(obj);*/ - if (rb_enc_get_index(obj) == idx) - return obj; - if (!ENC_CODERANGE_ASCIIONLY(obj) || - !rb_enc_asciicompat(rb_enc_from_index(idx))) { - ENC_CODERANGE_CLEAR(obj); - } - rb_enc_set_index(obj, idx); - return obj; -} - -VALUE -rb_enc_associate(VALUE obj, rb_encoding *enc) -{ - return rb_enc_associate_index(obj, rb_enc_to_index(enc)); -} - -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) -{ - rb_encoding *enc = rb_enc_compatible(str1, str2); - if (!enc) - rb_raise(rb_eEncCompatError, "incompatible character encodings: %s and %s", - rb_enc_name(rb_enc_get(str1)), - rb_enc_name(rb_enc_get(str2))); - return enc; -} - -rb_encoding* -rb_enc_compatible(VALUE str1, VALUE str2) -{ - int idx1, idx2; - rb_encoding *enc1, *enc2; - - idx1 = rb_enc_get_index(str1); - idx2 = rb_enc_get_index(str2); - - if (idx1 < 0 || idx2 < 0) - return 0; - - if (idx1 == idx2) { - return rb_enc_from_index(idx1); - } - enc1 = rb_enc_from_index(idx1); - enc2 = rb_enc_from_index(idx2); - - if (TYPE(str2) == T_STRING && RSTRING_LEN(str2) == 0) - return enc1; - if (TYPE(str1) == T_STRING && RSTRING_LEN(str1) == 0) - return enc2; - if (!rb_enc_asciicompat(enc1) || !rb_enc_asciicompat(enc2)) { - return 0; - } - - if (BUILTIN_TYPE(str1) != T_STRING) { - VALUE tmp = str1; - int idx0 = idx1; - str1 = str2; - str2 = tmp; - idx1 = idx2; - idx2 = idx0; - } - if (BUILTIN_TYPE(str1) == T_STRING) { - int cr1, cr2; - - cr1 = rb_enc_str_coderange(str1); - if (BUILTIN_TYPE(str2) == T_STRING) { - cr2 = rb_enc_str_coderange(str2); - if (cr1 != cr2) { - /* may need to handle ENC_CODERANGE_BROKEN */ - if (cr1 == ENC_CODERANGE_7BIT) return enc2; - if (cr2 == ENC_CODERANGE_7BIT) return enc1; - } - if (cr2 == ENC_CODERANGE_7BIT) { - if (idx1 == 0) return enc2; - return enc1; - } - } - if (cr1 == ENC_CODERANGE_7BIT) - return enc2; - } - return 0; -} - -void -rb_enc_copy(VALUE obj1, VALUE obj2) -{ - rb_enc_associate_index(obj1, rb_enc_get_index(obj2)); -} - - -/* - * call-seq: - * obj.encoding => encoding - * - * Returns the Encoding object that represents the encoding of obj. - */ - -VALUE -rb_obj_encoding(VALUE obj) -{ - rb_encoding *enc = rb_enc_get(obj); - if (!enc) { - rb_raise(rb_eTypeError, "unknown encoding"); - } - return rb_enc_from_encoding(enc); -} - -int -rb_enc_mbclen(const char *p, const char *e, rb_encoding *enc) -{ - int n = ONIGENC_PRECISE_MBC_ENC_LEN(enc, (UChar*)p, (UChar*)e); - if (MBCLEN_CHARFOUND_P(n) && MBCLEN_CHARFOUND_LEN(n) <= e-p) - return MBCLEN_CHARFOUND_LEN(n); - else { - int min = rb_enc_mbminlen(enc); - return min <= e-p ? min : e-p; - } -} - -int -rb_enc_precise_mbclen(const char *p, const char *e, rb_encoding *enc) -{ - int n; - if (e <= p) - return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(1); - n = ONIGENC_PRECISE_MBC_ENC_LEN(enc, (UChar*)p, (UChar*)e); - if (e-p < n) - return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(n-(e-p)); - return n; -} - -int -rb_enc_ascget(const char *p, const char *e, int *len, rb_encoding *enc) -{ - int c, l; - if (e <= p) - return -1; - if (rb_enc_asciicompat(enc)) { - c = (unsigned char)*p; - if (!ISASCII(c)) - return -1; - if (len) *len = 1; - return c; - } - l = rb_enc_precise_mbclen(p, e, enc); - if (!MBCLEN_CHARFOUND_P(l)) - return -1; - c = rb_enc_mbc_to_codepoint(p, e, enc); - if (!rb_enc_isascii(c, enc)) - return -1; - if (len) *len = l; - return c; -} - -int -rb_enc_codepoint(const char *p, const char *e, rb_encoding *enc) -{ - int r; - if (e <= p) - rb_raise(rb_eArgError, "empty string"); - r = rb_enc_precise_mbclen(p, e, enc); - if (MBCLEN_CHARFOUND_P(r)) - return rb_enc_mbc_to_codepoint(p, e, enc); - else - rb_raise(rb_eArgError, "invalid byte sequence in %s", rb_enc_name(enc)); -} - -int -rb_enc_codelen(int c, rb_encoding *enc) -{ - int n = ONIGENC_CODE_TO_MBCLEN(enc,c); - if (n == 0) { - rb_raise(rb_eArgError, "invalid codepoint 0x%x in %s", c, rb_enc_name(enc)); - } - return n; -} - -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)); -} - -/* - * call-seq: - * enc.inspect => string - * - * Returns a string which represents the encoding for programmers. - * - * Encoding::UTF_8.inspect #=> "#<Encoding:UTF-8>" - * Encoding::ISO_2022_JP.inspect #=> "#<Encoding:ISO-2022-JP (dummy)>" - */ -static VALUE -enc_inspect(VALUE self) -{ - VALUE str = rb_sprintf("#<%s:%s%s>", rb_obj_classname(self), - rb_enc_name((rb_encoding*)DATA_PTR(self)), - (enc_dummy_p(self) ? " (dummy)" : "")); - ENCODING_CODERANGE_SET(str, rb_usascii_encindex(), ENC_CODERANGE_7BIT); - return str; -} - -/* - * call-seq: - * enc.name => string - * - * Returns the name of the encoding. - * - * Encoding::UTF_8.name => "UTF-8" - */ -static VALUE -enc_name(VALUE self) -{ - return rb_usascii_str_new2(rb_enc_name((rb_encoding*)DATA_PTR(self))); -} - -static VALUE -enc_base_encoding(VALUE self) -{ - rb_encoding *base = enc_table.list[must_encoding(self)].base; - if (!base) return Qnil; - return ENC_FROM_ENCODING(base); -} - -/* - * call-seq: - * Encoding.list => [enc1, enc2, ...] - * - * Returns the list of loaded encodings. - * - * Encoding.list - * => [#<Encoding:ASCII-8BIT>, #<Encoding:UTF-8>, - * #<Encoding:ISO-2022-JP (dummy)>] - * - * Encoding.find("US-ASCII") - * => #<Encoding:US-ASCII> - * - * Encoding.list - * => [#<Encoding:ASCII-8BIT>, #<Encoding:UTF-8>, - * #<Encoding:US-ASCII>, #<Encoding:ISO-2022-JP (dummy)>] - * - */ -static VALUE -enc_list(VALUE klass) -{ - VALUE ary = rb_ary_new2(0); - rb_ary_replace(ary, rb_encoding_list); - return ary; -} - -/* - * call-seq: - * Encoding.find(string) => enc - * Encoding.find(symbol) => enc - * - * Search the encoding with specified <i>name</i>. - * <i>name</i> should be a string or symbol. - * - * Encoding.find("US-ASCII") => #<Encoding:US-ASCII> - * Encoding.find(:Shift_JIS) => #<Encoding:Shift_JIS> - * - */ -static VALUE -enc_find(VALUE klass, VALUE enc) -{ - return rb_enc_from_encoding(to_encoding(enc)); -} - -/* - * call-seq: - * Encoding.compatible?(str1, str2) => enc or nil - * - * Checks the compatibility of two strings. - * If they are compatible, means concatenatable, - * returns an encoding which the concatinated string will be. - * If they are not compatible, nil is returned. - * - * Encoding.compatible?("\xa1".force_encoding("iso-8859-1"), "b") - * => #<Encoding:ISO-8859-1> - * - * Encoding.compatible?( - * "\xa1".force_encoding("iso-8859-1"), - * "\xa1\xa1".force_encoding("euc-jp")) - * => nil - * - */ -static VALUE -enc_compatible_p(VALUE klass, VALUE str1, VALUE str2) -{ - rb_encoding *enc; - - if (enc_check_encoding(str1) > 0 || enc_check_encoding(str2) > 0) - rb_raise(rb_eTypeError, "wrong argument type Encoding (expected String)"); - if (!enc_capable(str1)) return Qnil; - if (!enc_capable(str2)) return Qnil; - enc = rb_enc_compatible(str1, str2); - if (!enc) return Qnil; - return rb_enc_from_encoding(enc); -} - -/* :nodoc: */ -static VALUE -enc_dump(int argc, VALUE *argv, VALUE self) -{ - rb_scan_args(argc, argv, "01", 0); - return enc_name(self); -} - -/* :nodoc: */ -static VALUE -enc_load(VALUE klass, VALUE str) -{ - return enc_find(klass, str); -} - -rb_encoding * -rb_ascii8bit_encoding(void) -{ - if (!enc_table.list) { - rb_enc_init(); - } - return enc_table.list[ENCINDEX_ASCII].enc; -} - -int -rb_ascii8bit_encindex(void) -{ - return ENCINDEX_ASCII; -} - -rb_encoding * -rb_utf8_encoding(void) -{ - if (!enc_table.list) { - rb_enc_init(); - } - return enc_table.list[ENCINDEX_UTF_8].enc; -} - -int -rb_utf8_encindex(void) -{ - return ENCINDEX_UTF_8; -} - -rb_encoding * -rb_usascii_encoding(void) -{ - if (!enc_table.list) { - rb_enc_init(); - } - return enc_table.list[ENCINDEX_US_ASCII].enc; -} - -int -rb_usascii_encindex(void) -{ - return ENCINDEX_US_ASCII; -} - -rb_encoding * -rb_locale_encoding(void) -{ - VALUE charmap = rb_locale_charmap(rb_cEncoding); - int idx; - - if (NIL_P(charmap)) - return rb_usascii_encoding(); - else - idx = rb_enc_find_index(StringValueCStr(charmap)); - if (idx < 0) - return rb_ascii8bit_encoding(); - - return rb_enc_from_index(idx); -} - -rb_encoding * -rb_filesystem_encoding(void) -{ - rb_encoding *enc; -#if defined _WIN32 - enc = rb_locale_encoding(); -#elif defined __APPLE__ - enc = rb_enc_find("UTF8-MAC"); -#else - enc = rb_default_external_encoding(); -#endif - return enc; -} - -static int default_external_index; - -rb_encoding * -rb_default_external_encoding(void) -{ - return rb_enc_from_index(default_external_index); -} - -VALUE -rb_enc_default_external(void) -{ - return rb_enc_from_encoding(rb_default_external_encoding()); -} - -/* - * call-seq: - * Encoding.default_external => enc - * - * Returns default external encoding. - * - * It is initialized by the locale or -E option. - */ -static VALUE -get_default_external(VALUE klass) -{ - return rb_enc_default_external(); -} - -void -rb_enc_set_default_external(VALUE encoding) -{ - default_external_index = rb_enc_to_index(rb_to_encoding(encoding)); -} - -/* - * call-seq: - * Encoding.locale_charmap => string - * - * Returns the locale charmap name. - * - * Debian GNU/Linux - * LANG=C - * Encoding.locale_charmap => "ANSI_X3.4-1968" - * LANG=ja_JP.EUC-JP - * Encoding.locale_charmap => "EUC-JP" - * - * SunOS 5 - * LANG=C - * Encoding.locale_charmap => "646" - * LANG=ja - * Encoding.locale_charmap => "eucJP" - * - */ -VALUE -rb_locale_charmap(VALUE klass) -{ -#if defined NO_LOCALE_CHARMAP - return rb_usascii_str_new2("ASCII-8BIT"); -#elif defined HAVE_LANGINFO_H - char *codeset; - codeset = nl_langinfo(CODESET); - return rb_usascii_str_new2(codeset); -#elif defined _WIN32 - return rb_sprintf("CP%d", GetACP()); -#else - return Qnil; -#endif -} - -static void -set_encoding_const(const char *name, rb_encoding *enc) -{ - VALUE encoding = rb_enc_from_encoding(enc); - char *s = (char *)name; - int haslower = 0, hasupper = 0, valid = 0; - - if (ISDIGIT(*s)) return; - if (ISUPPER(*s)) { - hasupper = 1; - while (*++s && (ISALNUM(*s) || *s == '_')) { - if (ISLOWER(*s)) haslower = 1; - } - } - if (!*s) { - valid = 1; - rb_define_const(rb_cEncoding, name, encoding); - } - if (!valid || haslower) { - int len = strlen(name) + 1; - if (!haslower || !hasupper) { - do { - if (ISLOWER(*s)) haslower = 1; - if (ISUPPER(*s)) hasupper = 1; - } while (*++s && (!haslower || !hasupper)); - } - MEMCPY(s = ALLOCA_N(char, len), name, char, len); - name = s; - if (!valid) { - if (ISLOWER(*s)) *s = ONIGENC_ASCII_CODE_TO_UPPER_CASE((int)*s); - for (; *s; ++s) { - if (!ISALNUM(*s)) *s = '_'; - } - if (hasupper) { - rb_define_const(rb_cEncoding, name, encoding); - } - } - if (haslower) { - for (s = (char *)name; *s; ++s) { - if (ISLOWER(*s)) *s = ONIGENC_ASCII_CODE_TO_UPPER_CASE((int)*s); - } - rb_define_const(rb_cEncoding, name, encoding); - } - } -} - -static int -rb_enc_name_list_i(st_data_t name, st_data_t idx, st_data_t arg) -{ - VALUE ary = (VALUE)arg; - VALUE str = rb_usascii_str_new2((char *)name); - OBJ_FREEZE(str); - rb_ary_push(ary, str); - return ST_CONTINUE; -} - -/* - * call-seq: - * Encoding.name_list => ["enc1", "enc2", ...] - * - * Returns the list of available encoding names. - * - * Encoding.name_list - * => ["US-ASCII", "ASCII-8BIT", "UTF-8", - * "ISO-8859-1", "Shift_JIS", "EUC-JP", - * "Windows-31J", - * "BINARY", "CP932", "eucJP"] - * - * This list doesn't include dummy encodings. - * - */ - -static VALUE -rb_enc_name_list(VALUE klass) -{ - VALUE ary = rb_ary_new2(enc_table.names->num_entries); - st_foreach(enc_table.names, rb_enc_name_list_i, (st_data_t)ary); - return ary; -} - -static int -rb_enc_aliases_enc_i(st_data_t name, st_data_t orig, st_data_t arg) -{ - VALUE *p = (VALUE *)arg; - VALUE aliases = p[0], ary = p[1]; - int idx = (int)orig; - VALUE key, str = rb_ary_entry(ary, idx); - - if (NIL_P(str)) { - rb_encoding *enc = rb_enc_from_index(idx); - - if (STRCASECMP((char*)name, rb_enc_name(enc)) == 0) { - return ST_CONTINUE; - } - str = rb_usascii_str_new2(rb_enc_name(enc)); - OBJ_FREEZE(str); - rb_ary_store(ary, idx, str); - } - key = rb_usascii_str_new2((char *)name); - OBJ_FREEZE(key); - rb_hash_aset(aliases, key, str); - return ST_CONTINUE; -} - -/* - * call-seq: - * Encoding.aliases => {"alias1" => "orig1", "alias2" => "orig2", ...} - * - * Returns the hash of available encoding alias and original encoding name. - * - * Encoding.aliases - * => {"BINARY"=>"ASCII-8BIT", "ASCII"=>"US-ASCII", "ANSI_X3.4-1986"=>"US-ASCII", - * "SJIS"=>"Shift_JIS", "eucJP"=>"EUC-JP", "CP932"=>"Windows-31J"} - * - */ - -static VALUE -rb_enc_aliases(VALUE klass) -{ - VALUE aliases[2]; - aliases[0] = rb_hash_new(); - aliases[1] = rb_ary_new(); - st_foreach(enc_table.names, rb_enc_aliases_enc_i, (st_data_t)aliases); - return aliases[0]; -} - -void -Init_Encoding(void) -{ -#undef rb_intern -#define rb_intern(str) rb_intern_const(str) - VALUE list; - int i; - - id_base_encoding = rb_intern("#base_encoding"); - - rb_cEncoding = rb_define_class("Encoding", rb_cObject); - rb_undef_alloc_func(rb_cEncoding); - rb_define_method(rb_cEncoding, "to_s", enc_name, 0); - rb_define_method(rb_cEncoding, "inspect", enc_inspect, 0); - rb_define_method(rb_cEncoding, "name", enc_name, 0); - rb_define_method(rb_cEncoding, "base_encoding", enc_base_encoding, 0); - rb_define_method(rb_cEncoding, "dummy?", enc_dummy_p, 0); - rb_define_singleton_method(rb_cEncoding, "list", enc_list, 0); - rb_define_singleton_method(rb_cEncoding, "name_list", rb_enc_name_list, 0); - rb_define_singleton_method(rb_cEncoding, "aliases", rb_enc_aliases, 0); - rb_define_singleton_method(rb_cEncoding, "find", enc_find, 1); - rb_define_singleton_method(rb_cEncoding, "compatible?", enc_compatible_p, 2); - - rb_define_method(rb_cEncoding, "_dump", enc_dump, -1); - rb_define_singleton_method(rb_cEncoding, "_load", enc_load, 1); - - rb_define_singleton_method(rb_cEncoding, "default_external", get_default_external, 0); - rb_define_singleton_method(rb_cEncoding, "locale_charmap", rb_locale_charmap, 0); - - rb_gc_register_address(&rb_encoding_list); - list = rb_ary_new2(enc_table.count); - RBASIC(list)->klass = 0; - rb_encoding_list = list; - for (i = 0; i < enc_table.count; ++i) { - rb_ary_push(list, enc_new(enc_table.list[i].enc)); - } -} - -/* locale insensitive functions */ - -#define ctype_test(c, ctype) \ - (rb_isascii(c) && ONIGENC_IS_ASCII_CODE_CTYPE((c), ctype)) - -int rb_isalnum(int c) { return ctype_test(c, ONIGENC_CTYPE_ALNUM); } -int rb_isalpha(int c) { return ctype_test(c, ONIGENC_CTYPE_ALPHA); } -int rb_isblank(int c) { return ctype_test(c, ONIGENC_CTYPE_BLANK); } -int rb_iscntrl(int c) { return ctype_test(c, ONIGENC_CTYPE_CNTRL); } -int rb_isdigit(int c) { return ctype_test(c, ONIGENC_CTYPE_DIGIT); } -int rb_isgraph(int c) { return ctype_test(c, ONIGENC_CTYPE_GRAPH); } -int rb_islower(int c) { return ctype_test(c, ONIGENC_CTYPE_LOWER); } -int rb_isprint(int c) { return ctype_test(c, ONIGENC_CTYPE_PRINT); } -int rb_ispunct(int c) { return ctype_test(c, ONIGENC_CTYPE_PUNCT); } -int rb_isspace(int c) { return ctype_test(c, ONIGENC_CTYPE_SPACE); } -int rb_isupper(int c) { return ctype_test(c, ONIGENC_CTYPE_UPPER); } -int rb_isxdigit(int c) { return ctype_test(c, ONIGENC_CTYPE_XDIGIT); } - -int -rb_tolower(int c) -{ - return rb_isascii(c) ? ONIGENC_ASCII_CODE_TO_LOWER_CASE(c) : c; -} - -int -rb_toupper(int c) -{ - return rb_isascii(c) ? ONIGENC_ASCII_CODE_TO_UPPER_CASE(c) : c; -} - |