зеркало из https://github.com/github/ruby.git
1002 строки
22 KiB
C
1002 строки
22 KiB
C
/**********************************************************************
|
|
|
|
encoding.c -
|
|
|
|
$Author$
|
|
$Date$
|
|
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
|
|
|
|
static ID id_encoding, id_based_encoding;
|
|
static VALUE rb_cEncoding;
|
|
|
|
struct rb_encoding_entry {
|
|
const char *name;
|
|
rb_encoding *enc;
|
|
};
|
|
|
|
static struct rb_encoding_entry *enc_table;
|
|
static int enc_table_count;
|
|
static int enc_table_size;
|
|
static st_table *enc_table_alias;
|
|
|
|
#define ENC_UNINITIALIZED (&rb_cEncoding)
|
|
#define enc_initialized_p(enc) ((enc)->auxiliary_data != &rb_cEncoding)
|
|
#define ENC_FROM_ENCODING(enc) ((VALUE)(enc)->auxiliary_data)
|
|
|
|
#define ENC_DUMMY FL_USER2
|
|
#define ENC_DUMMY_P(enc) (RBASIC(enc)->flags & ENC_DUMMY)
|
|
|
|
static void
|
|
enc_mark(void *ptr)
|
|
{
|
|
}
|
|
|
|
static VALUE
|
|
enc_new(rb_encoding *encoding)
|
|
{
|
|
VALUE enc = Data_Wrap_Struct(rb_cEncoding, enc_mark, -1, encoding);
|
|
encoding->auxiliary_data = (void *)enc;
|
|
return enc;
|
|
}
|
|
|
|
VALUE
|
|
rb_enc_from_encoding(rb_encoding *encoding)
|
|
{
|
|
if (!encoding) return Qnil;
|
|
if (enc_initialized_p(encoding))
|
|
return ENC_FROM_ENCODING(encoding);
|
|
return enc_new(encoding);
|
|
}
|
|
|
|
static int
|
|
enc_check_encoding(VALUE obj)
|
|
{
|
|
int index;
|
|
if (SPECIAL_CONST_P(obj) || BUILTIN_TYPE(obj) != T_DATA ||
|
|
RDATA(obj)->dmark != enc_mark) {
|
|
return -1;
|
|
}
|
|
index = rb_enc_to_index(RDATA(obj)->data);
|
|
if (rb_enc_from_index(index) != RDATA(obj)->data)
|
|
return -1;
|
|
return index;
|
|
}
|
|
|
|
int
|
|
rb_to_encoding_index(VALUE enc)
|
|
{
|
|
int idx;
|
|
|
|
if (NIL_P(enc)) return 0;
|
|
idx = enc_check_encoding(enc);
|
|
if (idx >= 0) {
|
|
return idx;
|
|
}
|
|
else if (NIL_P(enc = rb_check_string_type(enc))) {
|
|
return -1;
|
|
}
|
|
else {
|
|
return rb_enc_find_index(StringValueCStr(enc));
|
|
}
|
|
}
|
|
|
|
rb_encoding *
|
|
rb_to_encoding(VALUE enc)
|
|
{
|
|
int idx;
|
|
|
|
if (NIL_P(enc)) return 0;
|
|
idx = enc_check_encoding(enc);
|
|
if (idx >= 0) return RDATA(enc)->data;
|
|
if (NIL_P(enc = rb_check_string_type(enc))) {
|
|
return 0;
|
|
}
|
|
if ((idx = rb_enc_find_index(StringValueCStr(enc))) < 0) {
|
|
rb_raise(rb_eArgError, "unknown encoding name - %s", RSTRING_PTR(enc));
|
|
}
|
|
return rb_enc_from_index(idx);
|
|
}
|
|
|
|
void
|
|
rb_gc_mark_encodings(void)
|
|
{
|
|
int i;
|
|
for (i = 0; i < enc_table_size; ++i) {
|
|
rb_encoding *enc = enc_table[i].enc;
|
|
if (enc && enc_initialized_p(enc)) {
|
|
rb_gc_mark(ENC_FROM_ENCODING(enc));
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
enc_table_expand(int newsize)
|
|
{
|
|
struct rb_encoding_entry *ent;
|
|
|
|
if (enc_table_size >= newsize) return newsize;
|
|
ent = realloc(enc_table, sizeof(*enc_table) * newsize);
|
|
if (!ent) return -1;
|
|
memset(ent + enc_table_size, 0, sizeof(*ent)*(newsize - enc_table_size));
|
|
enc_table = ent;
|
|
enc_table_size = newsize;
|
|
return newsize;
|
|
}
|
|
|
|
static int
|
|
enc_register_at(int index, const char *name, rb_encoding *encoding)
|
|
{
|
|
struct rb_encoding_entry *ent = &enc_table[index];
|
|
|
|
ent->name = name;
|
|
if (!ent->enc) ent->enc = malloc(sizeof(rb_encoding));
|
|
*ent->enc = *encoding;
|
|
encoding = ent->enc;
|
|
encoding->name = name;
|
|
if (rb_cEncoding) {
|
|
/* initialize encoding data */
|
|
enc_new(encoding);
|
|
}
|
|
else {
|
|
encoding->auxiliary_data = ENC_UNINITIALIZED;
|
|
}
|
|
return index;
|
|
}
|
|
|
|
static int
|
|
enc_register(const char *name, rb_encoding *encoding)
|
|
{
|
|
int index = enc_table_count;
|
|
|
|
if (index >= ENCODING_INLINE_MAX) index = enc_table_size;
|
|
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))) {
|
|
st_data_t key = (st_data_t)name, alias;
|
|
st_delete(enc_table_alias, &key, &alias);
|
|
index = enc_register(name, encoding);
|
|
}
|
|
else if (enc_initialized_p(oldenc) &&
|
|
!ENC_DUMMY_P(ENC_FROM_ENCODING(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;
|
|
}
|
|
|
|
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 VALUE
|
|
set_based_encoding(int index, rb_encoding *based)
|
|
{
|
|
VALUE enc = rb_enc_from_encoding(enc_table[index].enc);
|
|
|
|
rb_ivar_set(enc, id_based_encoding, rb_enc_from_encoding(based));
|
|
return enc;
|
|
}
|
|
|
|
int
|
|
rb_enc_replicate(const char *name, rb_encoding *encoding)
|
|
{
|
|
int index = enc_table_size;
|
|
|
|
enc_check_duplication(name);
|
|
if (enc_table_expand(index + 1) < 0) return -1;
|
|
enc_register_at(index, name, encoding);
|
|
set_based_encoding(index, encoding);
|
|
return index;
|
|
}
|
|
|
|
int
|
|
rb_define_dummy_encoding(const char *name)
|
|
{
|
|
int index = enc_table_size;
|
|
rb_encoding *encoding;
|
|
VALUE enc;
|
|
|
|
enc_check_duplication(name);
|
|
if (index < ENCODING_INLINE_MAX) index = ENCODING_INLINE_MAX;
|
|
if (enc_table_expand(index + 1) < 0) return -1;
|
|
encoding = rb_ascii8bit_encoding();
|
|
enc_register_at(index, name, encoding);
|
|
enc = set_based_encoding(index, encoding);
|
|
FL_SET(enc, ENC_DUMMY);
|
|
return index;
|
|
}
|
|
|
|
int
|
|
rb_enc_dummy_p(rb_encoding *enc)
|
|
{
|
|
VALUE encoding = rb_enc_from_encoding(enc);
|
|
return ENC_DUMMY_P(encoding);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* enc.dummy? => true or false
|
|
*
|
|
* Returns true for dummy encoding.
|
|
* A dummy encoding is a encoding which character handling is not properly
|
|
* implemented.
|
|
* It is used for stateful encoding.
|
|
*
|
|
* Encoding::ISO_2022_JP.dummy? #=> true
|
|
* Encoding::UTF_8.dummy? #=> false
|
|
*
|
|
*/
|
|
static VALUE
|
|
enc_dummy_p(VALUE enc)
|
|
{
|
|
return rb_enc_dummy_p(rb_to_encoding(enc)) ? Qtrue : Qfalse;
|
|
}
|
|
|
|
static int
|
|
enc_alias(const char *alias, const char *orig)
|
|
{
|
|
st_data_t data;
|
|
int idx;
|
|
|
|
if (!enc_table_alias) {
|
|
enc_table_alias = st_init_strcasetable();
|
|
}
|
|
if ((idx = rb_enc_find_index(orig)) < 0) {
|
|
if (!st_lookup(enc_table_alias, (st_data_t)orig, &data))
|
|
return -1;
|
|
idx = (int)data;
|
|
}
|
|
st_insert(enc_table_alias, (st_data_t)alias, (st_data_t)idx);
|
|
return idx;
|
|
}
|
|
|
|
int
|
|
rb_enc_alias(const char *alias, const char *orig)
|
|
{
|
|
enc_check_duplication(alias);
|
|
return enc_alias(alias, orig);
|
|
}
|
|
|
|
enum {
|
|
ENCINDEX_ASCII,
|
|
ENCINDEX_EUC_JP,
|
|
ENCINDEX_SJIS,
|
|
ENCINDEX_UTF8,
|
|
ENCINDEX_BUILTIN_MAX
|
|
};
|
|
|
|
void
|
|
rb_enc_init(void)
|
|
{
|
|
enc_table_count = enc_table_expand(ENCINDEX_BUILTIN_MAX);
|
|
#define ENC_REGISTER(enc) enc_register_at(ENCINDEX_##enc, rb_enc_name(ONIG_ENCODING_##enc), ONIG_ENCODING_##enc)
|
|
ENC_REGISTER(ASCII);
|
|
ENC_REGISTER(EUC_JP);
|
|
ENC_REGISTER(SJIS);
|
|
ENC_REGISTER(UTF8);
|
|
#undef ENC_REGISTER
|
|
enc_alias("ASCII", rb_enc_name(ONIG_ENCODING_ASCII));
|
|
enc_alias("BINARY", rb_enc_name(ONIG_ENCODING_ASCII));
|
|
enc_alias("eucJP", rb_enc_name(ONIG_ENCODING_EUC_JP)); /* UI-OSF Application Platform Profile for Japanese Environment Version 1.1 */
|
|
enc_alias("SJIS", rb_enc_name(ONIG_ENCODING_SJIS));
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
int
|
|
rb_enc_registered(const char *name)
|
|
{
|
|
int i;
|
|
st_data_t alias = 0;
|
|
|
|
if (!name) return -1;
|
|
if (!enc_table) {
|
|
rb_enc_init();
|
|
}
|
|
for (i=0; i<enc_table_size; i++) {
|
|
if (!enc_table[i].name) {
|
|
if (i < ENCODING_INLINE_MAX - 1) i = ENCODING_INLINE_MAX - 1;
|
|
continue;
|
|
}
|
|
if (strcasecmp(name, enc_table[i].name) == 0) {
|
|
return i;
|
|
}
|
|
}
|
|
if (!alias && enc_table_alias) {
|
|
if (st_lookup(enc_table_alias, (st_data_t)name, &alias)) {
|
|
return (int)alias;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static VALUE
|
|
require_enc(VALUE enclib)
|
|
{
|
|
return rb_require_safe(enclib, rb_safe_level());
|
|
}
|
|
|
|
int
|
|
rb_enc_find_index(const char *name)
|
|
{
|
|
int i = rb_enc_registered(name);
|
|
if (i < 0) {
|
|
VALUE enclib = rb_sprintf("enc/%s", name);
|
|
char *s = RSTRING_PTR(enclib) + 4, *e = RSTRING_END(enclib);
|
|
while (s < e) {
|
|
if (!ISALNUM(*s)) *s = '_';
|
|
else if (ISUPPER(*s)) *s = tolower(*s);
|
|
++s;
|
|
}
|
|
OBJ_FREEZE(enclib);
|
|
if (RTEST(rb_protect(require_enc, enclib, 0)))
|
|
i = rb_enc_registered(name);
|
|
rb_set_errinfo(Qnil);
|
|
}
|
|
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 (IMMEDIATE_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;
|
|
}
|
|
}
|
|
|
|
static void
|
|
enc_check_capable(VALUE x)
|
|
{
|
|
if (!enc_capable(x)) {
|
|
const char *etype;
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
if (idx < ENCODING_INLINE_MAX) {
|
|
ENCODING_SET(obj, idx);
|
|
return;
|
|
}
|
|
ENCODING_SET(obj, ENCODING_INLINE_MAX);
|
|
rb_ivar_set(obj, rb_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;
|
|
|
|
if (!enc_capable(obj)) return -1;
|
|
i = ENCODING_GET(obj);
|
|
if (i == ENCODING_INLINE_MAX) {
|
|
VALUE iv;
|
|
|
|
iv = rb_ivar_get(obj, rb_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)
|
|
{
|
|
rb_encoding *enc = rb_enc_compatible(str1, str2);
|
|
if (!enc)
|
|
rb_raise(rb_eArgError, "character encodings differ");
|
|
return enc;
|
|
}
|
|
|
|
rb_encoding*
|
|
rb_enc_compatible(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 (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 rb_enc_from_index(idx2);
|
|
if (cr2 == ENC_CODERANGE_7BIT) return rb_enc_from_index(idx1);
|
|
}
|
|
if (cr2 == ENC_CODERANGE_7BIT) {
|
|
if (idx1 == 0) return rb_enc_from_index(idx2);
|
|
return rb_enc_from_index(idx1);
|
|
}
|
|
}
|
|
if (cr1 == ENC_CODERANGE_7BIT &&
|
|
rb_enc_asciicompat(enc = rb_enc_from_index(idx2)))
|
|
return enc;
|
|
}
|
|
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);
|
|
}
|
|
|
|
|
|
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, e, enc);
|
|
|
|
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, e, enc);
|
|
|
|
p += n;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
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);
|
|
n = MBCLEN_CHARFOUND(n);
|
|
if (0 < n && n <= e-p)
|
|
return 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(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(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 mbstring sequence");
|
|
}
|
|
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)
|
|
{
|
|
return rb_sprintf("#<%s:%s%s>", rb_obj_classname(self),
|
|
rb_enc_name((rb_encoding*)DATA_PTR(self)),
|
|
(ENC_DUMMY_P(self) ? " (dummy)" : ""));
|
|
}
|
|
|
|
/*
|
|
* 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_str_new2(rb_enc_name((rb_encoding*)DATA_PTR(self)));
|
|
}
|
|
|
|
static VALUE
|
|
enc_based_encoding(VALUE self)
|
|
{
|
|
return rb_attr_get(self, id_based_encoding);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Encoding.list => [enc1, enc2, ...]
|
|
*
|
|
* Returns the list of loaded encodings.
|
|
*
|
|
* Encoding.list
|
|
* => [#<Encoding:ASCII-8BIT>, #<Encoding:EUC-JP>,
|
|
* #<Encoding:Shift_JIS>, #<Encoding:UTF-8>,
|
|
* #<Encoding:ISO-2022-JP (dummy)>]
|
|
*
|
|
* Encoding.find("US-ASCII")
|
|
* => #<Encoding:US-ASCII>
|
|
*
|
|
* Encoding.list
|
|
* => [#<Encoding:ASCII-8BIT>, #<Encoding:EUC-JP>,
|
|
* #<Encoding:Shift_JIS>, #<Encoding:UTF-8>,
|
|
* #<Encoding:US-ASCII>, #<Encoding:ISO-2022-JP (dummy)>]
|
|
*
|
|
*/
|
|
static VALUE
|
|
enc_list(VALUE klass)
|
|
{
|
|
VALUE ary = rb_ary_new2(enc_table_size);
|
|
int i;
|
|
for (i = 0; i < enc_table_size; ++i) {
|
|
rb_encoding *enc = enc_table[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));
|
|
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 compabible, means concatinatable,
|
|
* 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) {
|
|
rb_enc_init();
|
|
}
|
|
return enc_table[0].enc;
|
|
}
|
|
|
|
rb_encoding *
|
|
rb_utf8_encoding(void)
|
|
{
|
|
if (!enc_table) {
|
|
rb_enc_init();
|
|
}
|
|
return enc_table[ENCINDEX_UTF8].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)
|
|
{
|
|
#ifdef HAVE_LANGINFO_H
|
|
char *codeset;
|
|
codeset = nl_langinfo(CODESET);
|
|
return rb_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, valid = 0;
|
|
|
|
if (ISUPPER(*s)) {
|
|
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) {
|
|
while (!ISLOWER(*s) && *++s);
|
|
if (*s) haslower = 1;
|
|
}
|
|
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 = '_';
|
|
}
|
|
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
|
|
set_encoding_alias(st_data_t name, st_data_t orig, st_data_t arg)
|
|
{
|
|
rb_encoding *enc = rb_enc_from_index((int)orig);
|
|
set_encoding_const((const char *)name, enc);
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
void
|
|
Init_Encoding(void)
|
|
{
|
|
int i;
|
|
|
|
id_based_encoding = rb_intern("#based_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, "based_encoding", enc_based_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, "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);
|
|
|
|
/* dummy for unsupported, statefull encoding */
|
|
rb_define_dummy_encoding("ISO-2022-JP");
|
|
|
|
for (i = 0; i < enc_table_size; ++i) {
|
|
rb_encoding *enc = enc_table[i].enc;
|
|
if (enc) set_encoding_const(rb_enc_name(enc), enc);
|
|
}
|
|
st_foreach(enc_table_alias, set_encoding_alias, 0);
|
|
}
|