зеркало из https://github.com/github/ruby.git
1256 строки
28 KiB
C
1256 строки
28 KiB
C
/**********************************************************************
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encoding.c -
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$Author$
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created at: Thu May 24 17:23:27 JST 2007
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Copyright (C) 2007 Yukihiro Matsumoto
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**********************************************************************/
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#include "ruby/ruby.h"
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#include "ruby/encoding.h"
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#include "regenc.h"
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#include <ctype.h>
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#ifdef HAVE_LANGINFO_H
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#include <langinfo.h>
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#endif
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static ID id_encoding, id_base_encoding;
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static VALUE rb_cEncoding;
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struct rb_encoding_entry {
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const char *name;
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rb_encoding *enc;
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};
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static struct {
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struct rb_encoding_entry *list;
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int count;
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int size;
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st_table *names;
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} enc_table;
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void rb_enc_init(void);
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#ifndef NO_ENCDB_H
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#undef ENC_REPLICATE
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#undef ENC_ALIAS
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#undef ENC_DUMMY
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static int encdb_replicate(const char *alias, const char *orig);
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static int encdb_alias(const char *alias, const char *orig);
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static int encdb_dummy(const char *name);
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static void encdb_declare(const char *name);
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#define ENC_REPLICATE(name, orig) encdb_replicate(name, orig)
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#define ENC_ALIAS(name, orig) encdb_alias(name, orig)
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#define ENC_DUMMY(name) encdb_dummy(name)
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#define ENC_DEFINE(name) encdb_declare(name)
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#endif
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static void
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enc_init_db(void)
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{
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#ifdef NO_ENCDB_H
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#define ENCODING_COUNT ENCINDEX_BUILTIN_MAX
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#else
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#include "encdb.h"
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#endif
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}
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#define enc_autoload_p(enc) (!rb_enc_mbmaxlen(enc))
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#define ENC_UNINITIALIZED (&rb_cEncoding)
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#define enc_initialized_p(enc) ((enc)->auxiliary_data != &rb_cEncoding)
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#define ENC_FROM_ENCODING(enc) ((VALUE)(enc)->auxiliary_data)
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#define ENC_DUMMY_FLAG FL_USER2
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#define ENC_DUMMY_P(enc) (RBASIC(enc)->flags & ENC_DUMMY_FLAG)
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#define ENC_SET_DUMMY(enc) (RBASIC(enc)->flags |= ENC_DUMMY_FLAG)
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static int load_encoding(const char *name);
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static VALUE enc_base_encoding(VALUE self);
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static void
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enc_mark(void *ptr)
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{
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}
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static VALUE
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enc_new(rb_encoding *encoding)
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{
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VALUE enc = Data_Wrap_Struct(rb_cEncoding, enc_mark, 0, encoding);
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encoding->auxiliary_data = (void *)enc;
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return enc;
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}
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VALUE
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rb_enc_from_encoding(rb_encoding *encoding)
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{
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if (!encoding) return Qnil;
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if (enc_initialized_p(encoding))
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return ENC_FROM_ENCODING(encoding);
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return enc_new(encoding);
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}
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static int
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enc_check_encoding(VALUE obj)
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{
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int index;
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rb_encoding *enc;
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if (SPECIAL_CONST_P(obj) || BUILTIN_TYPE(obj) != T_DATA ||
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RDATA(obj)->dmark != enc_mark) {
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return -1;
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}
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enc = (rb_encoding*)RDATA(obj)->data;
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index = rb_enc_to_index(enc);
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if (rb_enc_from_index(index) != enc)
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return -1;
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if (enc_autoload_p(enc)) {
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index = load_encoding(enc->name);
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}
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return index;
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}
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int
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rb_to_encoding_index(VALUE enc)
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{
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int idx;
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idx = enc_check_encoding(enc);
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if (idx >= 0) {
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return idx;
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}
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else if (NIL_P(enc = rb_check_string_type(enc))) {
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return -1;
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}
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else {
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return rb_enc_find_index(StringValueCStr(enc));
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}
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}
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rb_encoding *
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rb_to_encoding(VALUE enc)
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{
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int idx;
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idx = enc_check_encoding(enc);
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if (idx >= 0) return RDATA(enc)->data;
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if ((idx = rb_enc_find_index(StringValueCStr(enc))) < 0) {
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rb_raise(rb_eArgError, "unknown encoding name - %s", RSTRING_PTR(enc));
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}
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return rb_enc_from_index(idx);
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}
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void
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rb_gc_mark_encodings(void)
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{
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int i;
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for (i = 0; i < enc_table.count; ++i) {
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rb_encoding *enc = enc_table.list[i].enc;
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if (enc && enc_initialized_p(enc)) {
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rb_gc_mark(ENC_FROM_ENCODING(enc));
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}
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}
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}
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static int
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enc_table_expand(int newsize)
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{
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struct rb_encoding_entry *ent;
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int count = newsize;
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if (enc_table.size >= newsize) return newsize;
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newsize = (newsize + 7) / 8 * 8;
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ent = realloc(enc_table.list, sizeof(*enc_table.list) * newsize);
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if (!ent) return -1;
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memset(ent + enc_table.size, 0, sizeof(*ent)*(newsize - enc_table.size));
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enc_table.list = ent;
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enc_table.size = newsize;
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return count;
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}
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static int
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enc_register_at(int index, const char *name, rb_encoding *encoding)
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{
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struct rb_encoding_entry *ent = &enc_table.list[index];
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void *obj = ENC_UNINITIALIZED;
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if (!ent->name) {
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ent->name = name = strdup(name);
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}
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else if (STRCASECMP(name, ent->name)) {
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return -1;
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}
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if (!ent->enc) {
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ent->enc = malloc(sizeof(rb_encoding));
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}
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else {
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obj = ent->enc->auxiliary_data;
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}
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if (encoding) {
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*ent->enc = *encoding;
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}
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else {
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memset(ent->enc, 0, sizeof(*ent->enc));
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}
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encoding = ent->enc;
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encoding->name = name;
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encoding->ruby_encoding_index = index;
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st_insert(enc_table.names, (st_data_t)name, (st_data_t)index);
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if (obj != ENC_UNINITIALIZED) {
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encoding->auxiliary_data = obj;
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}
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else if (rb_cEncoding) {
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/* initialize encoding data */
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enc_new(encoding);
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}
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else {
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encoding->auxiliary_data = ENC_UNINITIALIZED;
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}
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return index;
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}
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static int
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enc_register(const char *name, rb_encoding *encoding)
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{
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int index = enc_table.count;
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if ((index = enc_table_expand(index + 1)) < 0) return -1;
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enc_table.count = index;
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return enc_register_at(index - 1, name, encoding);
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}
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static void set_encoding_const(const char *, rb_encoding *);
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int rb_enc_registered(const char *name);
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int
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rb_enc_register(const char *name, rb_encoding *encoding)
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{
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int index = rb_enc_registered(name);
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if (index >= 0) {
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rb_encoding *oldenc = rb_enc_from_index(index);
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if (STRCASECMP(name, rb_enc_name(oldenc))) {
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index = enc_register(name, encoding);
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}
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else if (!enc_autoload_p(oldenc) ||
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(enc_initialized_p(oldenc) &&
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!ENC_DUMMY_P(ENC_FROM_ENCODING(oldenc)))) {
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enc_register_at(index, name, encoding);
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}
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else {
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rb_raise(rb_eArgError, "encoding %s is already registered", name);
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}
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}
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else {
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index = enc_register(name, encoding);
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set_encoding_const(name, rb_enc_from_index(index));
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}
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return index;
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}
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#ifndef NO_ENCDB_H
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static void
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encdb_declare(const char *name)
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{
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int idx = rb_enc_registered(name);
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if (idx < 0) {
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idx = enc_register(name, 0);
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}
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set_encoding_const(name, rb_enc_from_index(idx));
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}
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#endif
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static void
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enc_check_duplication(const char *name)
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{
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if (rb_enc_registered(name) >= 0) {
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rb_raise(rb_eArgError, "encoding %s is already registered", name);
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}
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}
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static VALUE
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set_base_encoding(int index, rb_encoding *base)
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{
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VALUE enc = rb_enc_from_encoding(enc_table.list[index].enc);
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rb_ivar_set(enc, id_base_encoding, rb_enc_from_encoding(base));
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if (rb_enc_dummy_p(base)) ENC_SET_DUMMY(enc);
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return enc;
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}
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int
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rb_enc_replicate(const char *name, rb_encoding *encoding)
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{
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int idx;
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enc_check_duplication(name);
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idx = enc_register(name, encoding);
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set_base_encoding(idx, encoding);
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set_encoding_const(name, rb_enc_from_index(idx));
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return idx;
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}
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#ifndef NO_ENCDB_H
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static int
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enc_replicate(int idx, const char *name, rb_encoding *origenc)
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{
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if (idx < 0) {
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idx = enc_register(name, origenc);
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}
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else {
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idx = enc_register_at(idx, name, origenc);
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}
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if (idx >= 0) {
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set_base_encoding(idx, origenc);
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set_encoding_const(name, rb_enc_from_index(idx));
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}
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return idx;
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}
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static int
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encdb_replicate(const char *name, const char *orig)
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{
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int origidx = rb_enc_registered(orig);
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int idx = rb_enc_registered(name);
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if (origidx < 0) {
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origidx = enc_register(orig, 0);
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}
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return enc_replicate(idx, name, rb_enc_from_index(origidx));
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}
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#endif
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int
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rb_define_dummy_encoding(const char *name)
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{
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int index = rb_enc_replicate(name, rb_ascii8bit_encoding());
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VALUE enc = rb_enc_from_encoding(enc_table.list[index].enc);
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ENC_SET_DUMMY(enc);
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return index;
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}
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#ifndef NO_ENCDB_H
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static int
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encdb_dummy(const char *name)
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{
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int index = enc_replicate(rb_enc_registered(name), name,
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rb_ascii8bit_encoding());
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VALUE enc = rb_enc_from_encoding(enc_table.list[index].enc);
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ENC_SET_DUMMY(enc);
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return index;
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}
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#endif
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int
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rb_enc_dummy_p(rb_encoding *enc)
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{
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VALUE encoding = rb_enc_from_encoding(enc);
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return ENC_DUMMY_P(encoding);
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}
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/*
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* call-seq:
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* enc.dummy? => true or false
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*
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* Returns true for dummy encoding.
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* A dummy encoding is a encoding which character handling is not properly
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* implemented.
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* It is used for stateful encoding.
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*
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* Encoding::ISO_2022_JP.dummy? #=> true
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* Encoding::UTF_8.dummy? #=> false
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*
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*/
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static VALUE
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enc_dummy_p(VALUE enc)
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{
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return rb_enc_dummy_p(rb_to_encoding(enc)) ? Qtrue : Qfalse;
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}
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static int
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enc_alias(const char *alias, int idx)
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{
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alias = strdup(alias);
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st_insert(enc_table.names, (st_data_t)alias, (st_data_t)idx);
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set_encoding_const(alias, rb_enc_from_index(idx));
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return idx;
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}
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int
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rb_enc_alias(const char *alias, const char *orig)
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{
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int idx;
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enc_check_duplication(alias);
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if (!enc_table.list) {
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rb_enc_init();
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}
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if ((idx = rb_enc_find_index(orig)) < 0) {
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return -1;
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}
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return enc_alias(alias, idx);
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}
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#ifndef NO_ENCDB_H
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static int
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encdb_alias(const char *alias, const char *orig)
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{
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int idx = rb_enc_registered(orig);
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if (idx < 0) {
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idx = enc_register(orig, 0);
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}
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return enc_alias(alias, idx);
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}
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#endif
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enum {
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ENCINDEX_ASCII,
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ENCINDEX_UTF_8,
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ENCINDEX_US_ASCII,
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ENCINDEX_BUILTIN_MAX
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};
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extern rb_encoding OnigEncodingUTF_8;
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extern rb_encoding OnigEncodingUS_ASCII;
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void
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rb_enc_init(void)
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{
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enc_table_expand(ENCODING_COUNT + 1);
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if (!enc_table.names) {
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enc_table.names = st_init_strcasetable();
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}
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#define ENC_REGISTER(enc) enc_register_at(ENCINDEX_##enc, rb_enc_name(&OnigEncoding##enc), &OnigEncoding##enc)
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ENC_REGISTER(ASCII);
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ENC_REGISTER(UTF_8);
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ENC_REGISTER(US_ASCII);
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#undef ENC_REGISTER
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enc_table.count = ENCINDEX_BUILTIN_MAX;
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}
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rb_encoding *
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rb_enc_from_index(int index)
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{
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if (!enc_table.list) {
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rb_enc_init();
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}
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if (index < 0 || enc_table.count <= index) {
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return 0;
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}
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return enc_table.list[index].enc;
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}
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int
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rb_enc_registered(const char *name)
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{
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st_data_t idx = 0;
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if (!name) return -1;
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if (!enc_table.list) return -1;
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if (st_lookup(enc_table.names, (st_data_t)name, &idx)) {
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return (int)idx;
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}
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return -1;
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}
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static VALUE
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require_enc(VALUE enclib)
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{
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return rb_require_safe(enclib, rb_safe_level());
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}
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static int
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load_encoding(const char *name)
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{
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VALUE enclib = rb_sprintf("enc/%s", name);
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VALUE verbose = ruby_verbose;
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VALUE debug = ruby_debug;
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VALUE loaded;
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char *s = RSTRING_PTR(enclib) + 4, *e = RSTRING_END(enclib);
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int idx;
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while (s < e) {
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if (!ISALNUM(*s)) *s = '_';
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else if (ISUPPER(*s)) *s = TOLOWER(*s);
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++s;
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}
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OBJ_FREEZE(enclib);
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ruby_verbose = Qfalse;
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ruby_debug = Qfalse;
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loaded = rb_protect(require_enc, enclib, 0);
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ruby_verbose = verbose;
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ruby_debug = debug;
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rb_set_errinfo(Qnil);
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if (NIL_P(loaded)) return -1;
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if ((idx = rb_enc_registered(name)) < 0) return -1;
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if (enc_autoload_p(enc_table.list[idx].enc)) return -1;
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return idx;
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}
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int
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rb_enc_find_index(const char *name)
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{
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int i = rb_enc_registered(name), b;
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rb_encoding *enc;
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VALUE base;
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if (i < 0) {
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i = load_encoding(name);
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}
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else if (enc_autoload_p(enc = rb_enc_from_index(i))) {
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if (enc_initialized_p(enc) &&
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(base = enc_base_encoding(ENC_FROM_ENCODING(enc)), !NIL_P(base))) {
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if ((b = enc_check_encoding(base)) < 0) {
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goto failed;
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}
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enc_register_at(i, rb_enc_name(enc), rb_enc_from_index(b));
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}
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else {
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i = load_encoding(rb_enc_name(enc));
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if (i < 0) {
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failed:
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rb_warn("failed to load encoding (%s); use ASCII-8BIT instead",
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name);
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return 0;
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}
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}
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}
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return i;
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}
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rb_encoding *
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rb_enc_find(const char *name)
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{
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int idx = rb_enc_find_index(name);
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if (idx < 0) idx = 0;
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return rb_enc_from_index(idx);
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}
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static inline int
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enc_capable(VALUE obj)
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{
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if (IMMEDIATE_P(obj)) return Qfalse;
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switch (BUILTIN_TYPE(obj)) {
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case T_STRING:
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case T_REGEXP:
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case T_FILE:
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return Qtrue;
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case T_DATA:
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if (RDATA(obj)->dmark == enc_mark) return Qtrue;
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default:
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return Qfalse;
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}
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}
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static void
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enc_check_capable(VALUE x)
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{
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if (!enc_capable(x)) {
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const char *etype;
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|
|
if (NIL_P(x)) {
|
|
etype = "nil";
|
|
}
|
|
else if (FIXNUM_P(x)) {
|
|
etype = "Fixnum";
|
|
}
|
|
else if (SYMBOL_P(x)) {
|
|
etype = "Symbol";
|
|
}
|
|
else if (rb_special_const_p(x)) {
|
|
etype = RSTRING_PTR(rb_obj_as_string(x));
|
|
}
|
|
else {
|
|
etype = rb_obj_classname(x);
|
|
}
|
|
rb_raise(rb_eTypeError, "wrong argument type %s (not encode capable)", etype);
|
|
}
|
|
}
|
|
|
|
ID
|
|
rb_id_encoding(void)
|
|
{
|
|
if (!id_encoding) {
|
|
id_encoding = rb_intern("encoding");
|
|
}
|
|
return id_encoding;
|
|
}
|
|
|
|
int
|
|
rb_enc_internal_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_internal_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;
|
|
}
|
|
|
|
void
|
|
rb_enc_associate_index(VALUE obj, int idx)
|
|
{
|
|
enc_check_capable(obj);
|
|
if (!ENC_CODERANGE_ASCIIONLY(obj) ||
|
|
!rb_enc_asciicompat(rb_enc_from_index(idx))) {
|
|
ENC_CODERANGE_CLEAR(obj);
|
|
}
|
|
rb_enc_internal_set_index(obj, idx);
|
|
}
|
|
|
|
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)
|
|
{
|
|
if (!enc_capable(obj)) return -1;
|
|
return rb_enc_internal_get_index(obj);
|
|
}
|
|
|
|
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_eArgError, "character encodings differ: %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 (!rb_enc_asciicompat(enc1) || !rb_enc_asciicompat(enc2)) {
|
|
if (TYPE(str2) == T_STRING && RSTRING_LEN(str2) == 0)
|
|
return enc1;
|
|
if (TYPE(str1) == T_STRING && RSTRING_LEN(str1) == 0)
|
|
return 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
|
|
return 1;
|
|
}
|
|
|
|
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_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 mbstring sequence");
|
|
}
|
|
|
|
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", c);
|
|
}
|
|
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)
|
|
{
|
|
return rb_attr_get(self, id_base_encoding);
|
|
}
|
|
|
|
/*
|
|
* 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(enc_table.count);
|
|
int i;
|
|
for (i = 0; i < enc_table.count; ++i) {
|
|
rb_encoding *enc = enc_table.list[i].enc;
|
|
if (enc) {
|
|
rb_ary_push(ary, rb_enc_from_encoding(enc));
|
|
}
|
|
}
|
|
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)
|
|
{
|
|
int idx;
|
|
|
|
if (SYMBOL_P(enc)) enc = rb_id2str(SYM2ID(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_encoding(rb_enc_from_index(idx));
|
|
}
|
|
|
|
/*
|
|
* 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 = rb_enc_compatible(str1, str2);
|
|
VALUE encoding = Qnil;
|
|
if (!enc || !(encoding = rb_enc_from_encoding(enc)))
|
|
encoding = Qnil;
|
|
return encoding;
|
|
}
|
|
|
|
/* :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[0].enc;
|
|
}
|
|
|
|
rb_encoding *
|
|
rb_utf8_encoding(void)
|
|
{
|
|
if (!enc_table.list) {
|
|
rb_enc_init();
|
|
}
|
|
return enc_table.list[ENCINDEX_UTF_8].enc;
|
|
}
|
|
|
|
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))
|
|
idx = rb_enc_find_index("US-ASCII");
|
|
else
|
|
idx = rb_enc_find_index(StringValueCStr(charmap));
|
|
if (idx < 0)
|
|
return rb_ascii8bit_encoding();
|
|
|
|
return rb_enc_from_index(idx);
|
|
}
|
|
|
|
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)
|
|
{
|
|
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);
|
|
|
|
enc_init_db();
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|