ISO-2022-JP の実装ですが、0x1e が shift だといってみたり、
% ./ruby -ve 'p "\x1e".encode("euc-jp", "iso-2022-jp")'
ruby 1.9.0 (2008-08-07 revision 18416) [i686-linux]
-e:1:in `encode': shift is not supported (RuntimeError)
from -e:1:in `<main>'
:invalid=>:replace, :undef=>:replace の両方を指定しても例外が出たり、
% ./ruby -e 'p "\e(X".encode("EUC-JP", "ISO-2022-JP",
:invalid=>:replace, :undef=>:replace)'
-e:1:in `encode': this mode is not supported (ESC ( X) (RuntimeError)
from -e:1:in `<main>'
エラーメッセージに NUL が入ったり、
% ./ruby -e 'p "\e".encode("EUC-JP", "ISO-2022-JP")'|& cat -v
-e:1:in `encode': this mode is not supported (ESC ^@) (RuntimeError)
from -e:1:in `<main>'
-1 bytes left という怪しいメッセージが出たり、
% ./ruby -e 'p "\e$(Da".encode("EUC-JP", "ISO-2022-JP")'
-e:1:in `encode': not fully converted, -1 bytes left (ArgumentError)
from -e:1:in `<main>'
するので、作りなおして以下のようにするのはどうでしょうか。
Index: enc/trans/iso2022.erb.c
===================================================================
--- enc/trans/iso2022.erb.c (revision 0)
+++ enc/trans/iso2022.erb.c (revision 0)
@@ -0,0 +1,142 @@
+#include "transcode_data.h"
+
+<%
+ map = {}
+ map["1b2842"] = :func_so # designate US-ASCII to G0.
"ESC ( B"
+ map["1b284a"] = :func_so # designate JIS X 0201 latin to G0.
"ESC ( J"
+ map["1b2440"] = :func_so # designate JIS X 0208 1978 to G0.
"ESC $ @"
+ map["1b2442"] = :func_so # designate JIS X 0208 1983 to G0.
"ESC $ B"
+ map["{00-0d,10-1a,1c-7f}"] = :func_si
+
+ map_jisx0208_rest = {}
+ map_jisx0208_rest["{21-7e}"] = :func_so
+%>
+
+<%= transcode_generate_node(ActionMap.parse(map), "iso2022jp_to_eucjp",
[]) %>
+<%= transcode_generate_node(ActionMap.parse(map_jisx0208_rest),
"iso2022jp_to_eucjp_jisx0208_rest", []) %>
+
+static VALUE
+fun_si_iso2022jp_to_eucjp(rb_transcoding* t, const unsigned char* s,
size_t l)
+{
+ if (t->stateful[0] == 0)
+ return (VALUE)NOMAP;
+ else if (0x21 <= s[0] && s[0] <= 0x7e)
+ return (VALUE)&iso2022jp_to_eucjp_jisx0208_rest;
+ else
+ return (VALUE)INVALID;
+}
+
+static int
+fun_so_iso2022jp_to_eucjp(rb_transcoding* t, const unsigned char* s,
size_t l, unsigned char* o)
+{
+ if (s[0] == 0x1b) {
+ if (s[1] == '(') {
+ switch (s[l-1]) {
+ case 'B':
+ case 'J':
+ t->stateful[0] = 0;
+ break;
+ }
+ }
+ else {
+ switch (s[l-1]) {
+ case '@':
+ case 'B':
+ t->stateful[0] = 1;
+ break;
+ }
+ }
+ return 0;
+ }
+ else {
+ o[0] = s[0] | 0x80;
+ o[1] = s[1] | 0x80;
+ return 2;
+ }
+}
+
+static const rb_transcoder
+rb_ISO_2022_JP_to_EUC_JP = {
+ "ISO-2022-JP", "EUC-JP", &iso2022jp_to_eucjp, 3, 0,
+ NULL, fun_si_iso2022jp_to_eucjp, NULL, fun_so_iso2022jp_to_eucjp
+};
+
+<%
+ map_eucjp = {
+ "{0e,0f,1b}" => :undef,
+ "{00-0d,10-1a,1c-7f}" => :func_so,
+ "{a1-fe}{a1-fe}" => :func_so,
+ "8e{a1-fe}" => :undef,
+ "8f{a1-fe}{a1-fe}" => :undef,
+ }
+%>
+
+<%= transcode_generate_node(ActionMap.parse(map_eucjp),
"eucjp_to_iso2022jp", []) %>
+
+static int
+fun_so_eucjp_to_iso2022jp(rb_transcoding *t, const unsigned char *s,
size_t l, unsigned char *o)
+{
+ unsigned char *output0 = o;
+
+ if (t->stateful[0] == 0) {
+ t->stateful[0] = 1; /* initialized flag */
+ t->stateful[1] = 1; /* ASCII mode */
+ }
+
+ if (l != t->stateful[1]) {
+ if (l == 1) {
+ *o++ = 0x1b;
+ *o++ = '(';
+ *o++ = 'B';
+ t->stateful[1] = 1;
+ }
+ else {
+ *o++ = 0x1b;
+ *o++ = '$';
+ *o++ = 'B';
+ t->stateful[1] = 2;
+ }
+ }
+
+ if (l == 1) {
+ *o++ = s[0] & 0x7f;
+ }
+ else {
+ *o++ = s[0] & 0x7f;
+ *o++ = s[1] & 0x7f;
+ }
+
+ return o - output0;
+}
+
+static int
+finish_eucjp_to_iso2022jp(rb_transcoding *t, unsigned char *o)
+{
+ unsigned char *output0 = o;
+
+ if (t->stateful[0] == 0)
+ return 0;
+
+ if (t->stateful[1] != 1) {
+ *o++ = 0x1b;
+ *o++ = '(';
+ *o++ = 'B';
+ t->stateful[1] = 1;
+ }
+
+ return o - output0;
+}
+
+static const rb_transcoder
+rb_EUC_JP_to_ISO_2022_JP = {
+ "EUC-JP", "ISO-2022-JP", &eucjp_to_iso2022jp, 5, 0,
+ NULL, NULL, NULL, fun_so_eucjp_to_iso2022jp,
finish_eucjp_to_iso2022jp
+};
+
+void
+Init_iso2022(void)
+{
+ rb_register_transcoder(&rb_ISO_2022_JP_to_EUC_JP);
+ rb_register_transcoder(&rb_EUC_JP_to_ISO_2022_JP);
+}
+
Index: enc/trans/japanese.erb.c
===================================================================
--- enc/trans/japanese.erb.c (revision 18417)
+++ enc/trans/japanese.erb.c (working copy)
@@ -17,235 +17,8 @@
<%= transcode_tblgen "UTF-8", "EUC-JP", [["{00-7f}", :nomap],
*UCS_TO_EUCJP_TBL] %>
<%= transcode_tblgen "UTF-8", "CP51932", [["{00-7f}", :nomap],
*UCS_TO_EUCJP_TBL] %>
-#define ISO_2022_ENCODING(escseq, byte) ((escseq<<8)|byte)
-enum ISO_2022_ESCSEQ {
- ISO_2022_CZD = '!',
- ISO_2022_C1D = '"',
- ISO_2022_GZD4 = '(',
- ISO_2022_G1D4 = ')',
- ISO_2022_G2D4 = '*',
- ISO_2022_G3D4 = '+',
- ISO_2022_G1D6 = '-',
- ISO_2022_G2D6 = '.',
- ISO_2022_G3D6 = '/',
- ISO_2022_GZDM4 = ISO_2022_ENCODING('$','('),
- ISO_2022_G1DM4 = ISO_2022_ENCODING('$',')'),
- ISO_2022_G2DM4 = ISO_2022_ENCODING('$','*'),
- ISO_2022_G3DM4 = ISO_2022_ENCODING('$','+'),
- ISO_2022_G1DM6 = ISO_2022_ENCODING('$','-'),
- ISO_2022_G2DM6 = ISO_2022_ENCODING('$','.'),
- ISO_2022_G3DM6 = ISO_2022_ENCODING('$','/'),
- ISO_2022_DOCS = ISO_2022_ENCODING('%','I'),
- ISO_2022_IRR = '&'
-};
-
-
-#define ISO_2022_GZ_ASCII
ISO_2022_ENCODING(ISO_2022_GZD4, 'B')
-#define ISO_2022_GZ_JIS_X_0201_Katakana
ISO_2022_ENCODING(ISO_2022_GZD4, 'I')
-#define ISO_2022_GZ_JIS_X_0201_Roman
ISO_2022_ENCODING(ISO_2022_GZD4, 'J')
-#define ISO_2022_GZ_JIS_C_6226_1978
ISO_2022_ENCODING(ISO_2022_GZDM4,'@')
-#define ISO_2022_GZ_JIS_X_0208_1983
ISO_2022_ENCODING(ISO_2022_GZDM4,'B')
-#define ISO_2022_GZ_JIS_X_0212_1990
ISO_2022_ENCODING(ISO_2022_GZDM4,'D')
-#define ISO_2022_GZ_JIS_X_0213_2000_1
ISO_2022_ENCODING(ISO_2022_GZDM4,'O')
-#define ISO_2022_GZ_JIS_X_0213_2000_2
ISO_2022_ENCODING(ISO_2022_GZDM4,'P')
-#define ISO_2022_GZ_JIS_X_0213_2004_1
ISO_2022_ENCODING(ISO_2022_GZDM4,'Q')
-
-#define UNSUPPORTED_MODE TRANSCODE_ERROR
-
-static int
-get_iso_2022_mode(const unsigned char **in_pos)
-{
- int new_mode;
- const unsigned char *in_p = *in_pos;
- switch (*in_p++) {
- case '(':
- switch (*in_p++) {
- case 'B': case 'I': case 'J':
- new_mode = ISO_2022_ENCODING(ISO_2022_GZD4, *(in_p-1));
- break;
- default:
- rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC (
%c)", *(in_p-1));
- break;
- }
- break;
- case '$':
- switch (*in_p++) {
- case '@': case 'A': case 'B':
- new_mode = ISO_2022_ENCODING(ISO_2022_GZDM4, *(in_p-1));
- break;
- case '(':
- switch (*in_p++) {
- case 'D': case 'O': case 'P': case 'Q':
- new_mode = ISO_2022_ENCODING(ISO_2022_GZDM4, *(in_p-1));
- break;
- default:
- rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC $ (
%c)", *(in_p-1));
- break;
- }
- break;
- default:
- rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC $
%c)", *(in_p-1));
- break;
- }
- break;
- default:
- rb_raise(UNSUPPORTED_MODE, "this mode is not supported (ESC %c)",
*(in_p-1));
- break;
- }
- *in_pos = in_p;
- return new_mode;
-}
-
-static void
-from_iso_2022_jp_transcoder_preprocessor(const unsigned char **in_pos,
unsigned char **out_pos,
- const unsigned char *in_stop, unsigned char *out_stop,
- rb_transcoding *my_transcoding)
-{
- const rb_transcoder *my_transcoder = my_transcoding->transcoder;
- const unsigned char *in_p = *in_pos;
- unsigned char *out_p = *out_pos;
- int cur_mode = ISO_2022_GZ_ASCII;
- unsigned char c1;
- unsigned char *out_s = out_stop - my_transcoder->max_output + 1;
- while (in_p < in_stop) {
- if (out_p >= out_s) {
- int len = (out_p - *out_pos);
- int new_len = (len + my_transcoder->max_output) * 2;
- *out_pos = (*my_transcoding->flush_func)(my_transcoding, len,
new_len);
- out_p = *out_pos + len;
- out_s = *out_pos + new_len - my_transcoder->max_output;
- }
- c1 = *in_p++;
- if (c1 == 0x1B) {
- cur_mode = get_iso_2022_mode(&in_p);
- }
- else if (c1 == 0x1E || c1 == 0x1F) {
- /* SHIFT */
- rb_raise(UNSUPPORTED_MODE, "shift is not supported");
- }
- else if (c1 >= 0x80) {
- rb_raise(TRANSCODE_ERROR, "invalid byte sequence");
- }
- else {
- switch (cur_mode) {
- case ISO_2022_GZ_ASCII:
- case ISO_2022_GZ_JIS_X_0201_Roman:
- *out_p++ = c1;
- break;
- case ISO_2022_GZ_JIS_X_0201_Katakana:
- *out_p++ = 0x8E;
- *out_p++ = c1 | 0x80;
- break;
- case ISO_2022_GZ_JIS_X_0212_1990:
- *out_p++ = 0x8F;
- case ISO_2022_GZ_JIS_C_6226_1978:
- case ISO_2022_GZ_JIS_X_0208_1983:
- *out_p++ = c1 | 0x80;
- *out_p++ = *in_p++ | 0x80;
- break;
- }
- }
- }
- /* cleanup */
- *in_pos = in_p;
- *out_pos = out_p;
-}
-
-static int
-select_iso_2022_mode(unsigned char **out_pos, int new_mode)
-{
- unsigned char *out_p = *out_pos;
- *out_p++ = '\x1b';
- switch (new_mode>>8) {
- case ISO_2022_GZD4:
- *out_p++ = new_mode >> 8;
- *out_p++ = new_mode & 0x7F;
- break;
- case ISO_2022_GZDM4:
- *out_p++ = new_mode >> 16;
- if ((new_mode & 0x7F) != '@' &&
- (new_mode & 0x7F) != 'A' &&
- (new_mode & 0x7F) != 'B')
- {
- *out_p++ = (new_mode>>8) & 0x7F;
- }
- *out_p++ = new_mode & 0x7F;
- break;
- default:
- rb_raise(UNSUPPORTED_MODE, "this mode is not supported.");
- break;
- }
- *out_pos = out_p;
- return new_mode;
-}
-
-static void
-to_iso_2022_jp_transcoder_postprocessor(const unsigned char **in_pos,
unsigned char **out_pos,
- const unsigned char *in_stop, unsigned char *out_stop,
- rb_transcoding *my_transcoding)
-{
- const rb_transcoder *my_transcoder = my_transcoding->transcoder;
- const unsigned char *in_p = *in_pos;
- unsigned char *out_p = *out_pos;
- int cur_mode = ISO_2022_GZ_ASCII, new_mode = 0;
- unsigned char next_byte;
- unsigned char *out_s = out_stop - my_transcoder->max_output + 1;
- while (in_p < in_stop) {
- if (out_p >= out_s) {
- int len = (out_p - *out_pos);
- int new_len = (len + my_transcoder->max_output) * 2;
- *out_pos = (*my_transcoding->flush_func)(my_transcoding, len,
new_len);
- out_p = *out_pos + len;
- out_s = *out_pos + new_len - my_transcoder->max_output;
- }
- next_byte = *in_p++;
- if (next_byte < 0x80) {
- new_mode = ISO_2022_GZ_ASCII;
- }
- else if (next_byte == 0x8E) {
- new_mode = ISO_2022_GZ_JIS_X_0201_Katakana;
- next_byte = *in_p++;
- }
- else if (next_byte == 0x8F) {
- new_mode = ISO_2022_GZ_JIS_X_0212_1990;
- next_byte = *in_p++;
- }
- else {
- new_mode = ISO_2022_GZ_JIS_X_0208_1983;
- }
- if (cur_mode != new_mode)
- cur_mode = select_iso_2022_mode(&out_p, new_mode);
- if (cur_mode < 0xFFFF) {
- *out_p++ = next_byte & 0x7F;
- }
- else {
- *out_p++ = next_byte & 0x7F;
- *out_p++ = *in_p++ & 0x7F;
- }
- }
- if (cur_mode != ISO_2022_GZ_ASCII)
- cur_mode = select_iso_2022_mode(&out_p, ISO_2022_GZ_ASCII);
- /* cleanup */
- *in_pos = in_p;
- *out_pos = out_p;
-}
-
-static const rb_transcoder
-rb_from_ISO_2022_JP = {
- "ISO-2022-JP", "UTF-8", &from_EUC_JP, 8, 0,
- &from_iso_2022_jp_transcoder_preprocessor, NULL,
-};
-
-static const rb_transcoder
-rb_to_ISO_2022_JP = {
- "UTF-8", "ISO-2022-JP", &to_EUC_JP, 8, 1,
- NULL, &to_iso_2022_jp_transcoder_postprocessor,
-};
-
void
Init_japanese(void)
{
<%= transcode_register_code %>
- rb_register_transcoder(&rb_from_ISO_2022_JP);
- rb_register_transcoder(&rb_to_ISO_2022_JP);
}
Index: enc/trans/utf_16_32.erb.c
===================================================================
--- enc/trans/utf_16_32.erb.c (revision 18417)
+++ enc/trans/utf_16_32.erb.c (working copy)
@@ -1,7 +1,7 @@
#include "transcode_data.h"
static int
-fun_so_from_utf_16be(const unsigned char* s, unsigned char* o)
+fun_so_from_utf_16be(rb_transcoding* t, const unsigned char* s, size_t
l, unsigned char* o)
{
if (!s[0] && s[1]<0x80) {
o[0] = s[1];
@@ -29,7 +29,7 @@ fun_so_from_utf_16be(const unsigned char
}
static int
-fun_so_to_utf_16be(const unsigned char* s, unsigned char* o)
+fun_so_to_utf_16be(rb_transcoding* t, const unsigned char* s, size_t l,
unsigned char* o)
{
if (!(s[0]&0x80)) {
o[0] = 0x00;
@@ -57,7 +57,7 @@ fun_so_to_utf_16be(const unsigned char*
}
static int
-fun_so_from_utf_16le(const unsigned char* s, unsigned char* o)
+fun_so_from_utf_16le(rb_transcoding* t, const unsigned char* s, size_t
l, unsigned char* o)
{
if (!s[1] && s[0]<0x80) {
o[0] = s[0];
@@ -85,7 +85,7 @@ fun_so_from_utf_16le(const unsigned char
}
static int
-fun_so_to_utf_16le(const unsigned char* s, unsigned char* o)
+fun_so_to_utf_16le(rb_transcoding* t, const unsigned char* s, size_t l,
unsigned char* o)
{
if (!(s[0]&0x80)) {
o[1] = 0x00;
@@ -113,7 +113,7 @@ fun_so_to_utf_16le(const unsigned char*
}
static int
-fun_so_from_utf_32be(const unsigned char* s, unsigned char* o)
+fun_so_from_utf_32be(rb_transcoding* t, const unsigned char* s, size_t
l, unsigned char* o)
{
if (!s[1]) {
if (s[2]==0 && s[3]<0x80) {
@@ -142,7 +142,7 @@ fun_so_from_utf_32be(const unsigned char
}
static int
-fun_so_to_utf_32be(const unsigned char* s, unsigned char* o)
+fun_so_to_utf_32be(rb_transcoding* t, const unsigned char* s, size_t l,
unsigned char* o)
{
o[0] = 0;
if (!(s[0]&0x80)) {
@@ -168,13 +168,13 @@ fun_so_to_utf_32be(const unsigned char*
}
static int
-fun_so_from_utf_32le(const unsigned char* s, unsigned char* o)
+fun_so_from_utf_32le(rb_transcoding* t, const unsigned char* s, size_t
l, unsigned char* o)
{
return 1;
}
static int
-fun_so_to_utf_32le(const unsigned char* s, unsigned char* o)
+fun_so_to_utf_32le(rb_transcoding* t, const unsigned char* s, size_t l,
unsigned char* o)
{
return 4;
}
@@ -191,7 +191,7 @@ fun_so_to_utf_32le(const unsigned char*
static const rb_transcoder
rb_from_UTF_16BE = {
"UTF-16BE", "UTF-8", &from_UTF_16BE, 4, 0,
- NULL, NULL, NULL, NULL, NULL, &fun_so_from_utf_16be
+ NULL, NULL, NULL, &fun_so_from_utf_16be
};
<%=
@@ -217,7 +217,7 @@ rb_from_UTF_16BE = {
static const rb_transcoder
rb_to_UTF_16BE = {
"UTF-8", "UTF-16BE", &to_UTF_16BE, 4, 1,
- NULL, NULL, NULL, NULL, NULL, &fun_so_to_utf_16be
+ NULL, NULL, NULL, &fun_so_to_utf_16be
};
<%=
@@ -232,13 +232,13 @@ rb_to_UTF_16BE = {
static const rb_transcoder
rb_from_UTF_16LE = {
"UTF-16LE", "UTF-8", &from_UTF_16LE, 4, 0,
- NULL, NULL, NULL, NULL, NULL, &fun_so_from_utf_16le
+ NULL, NULL, NULL, &fun_so_from_utf_16le
};
static const rb_transcoder
rb_to_UTF_16LE = {
"UTF-8", "UTF-16LE", &to_UTF_16BE, 4, 1,
- NULL, NULL, NULL, NULL, NULL, &fun_so_to_utf_16le
+ NULL, NULL, NULL, &fun_so_to_utf_16le
};
<%=
@@ -254,13 +254,13 @@ rb_to_UTF_16LE = {
static const rb_transcoder
rb_from_UTF_32BE = {
"UTF-32BE", "UTF-8", &from_UTF_32BE, 4, 0,
- NULL, NULL, NULL, NULL, NULL, &fun_so_from_utf_32be
+ NULL, NULL, NULL, &fun_so_from_utf_32be
};
static const rb_transcoder
rb_to_UTF_32BE = {
"UTF-8", "UTF-32BE", &to_UTF_16BE, 4, 1,
- NULL, NULL, NULL, NULL, NULL, &fun_so_to_utf_32be
+ NULL, NULL, NULL, &fun_so_to_utf_32be
};
<%=
@@ -276,13 +276,13 @@ rb_to_UTF_32BE = {
static const rb_transcoder
rb_from_UTF_32LE = {
"UTF-32LE", "UTF-8", &from_UTF_32LE, 4, 0,
- NULL, NULL, NULL, NULL, NULL, &fun_so_from_utf_32le
+ NULL, NULL, NULL, &fun_so_from_utf_32le
};
static const rb_transcoder
rb_to_UTF_32LE = {
"UTF-8", "UTF-32LE", &to_UTF_16BE, 4, 1,
- NULL, NULL, NULL, NULL, NULL, &fun_so_to_utf_32le
+ NULL, NULL, NULL, &fun_so_to_utf_32le
};
void
Index: transcode_data.h
===================================================================
--- transcode_data.h (revision 18417)
+++ transcode_data.h (working copy)
@@ -63,6 +63,8 @@ typedef struct rb_transcoding {
VALUE ruby_string_dest; /* the String used as the conversion
destination,
or NULL if something else is being converted */
unsigned char *(*flush_func)(struct rb_transcoding*, int, int);
+
+ unsigned char stateful[256]; /* opaque data for stateful encoding
*/
} rb_transcoding;
/* static structure, one per supported encoding pair */
@@ -72,12 +74,11 @@ typedef struct rb_transcoder {
const BYTE_LOOKUP *conv_tree_start;
int max_output;
int from_utf8;
- void (*preprocessor)(const unsigned char**, unsigned char**, const
unsigned char*, unsigned char*, struct rb_transcoding *);
- void (*postprocessor)(const unsigned char**, unsigned char**, const
unsigned char*, unsigned char*, struct rb_transcoding *);
- VALUE (*func_ii)(VALUE); /* info -> info */
- VALUE (*func_si)(const unsigned char *); /* start -> info */
- int (*func_io)(VALUE, const unsigned char*); /* info -> output */
- int (*func_so)(const unsigned char*, unsigned char*); /* start ->
output */
+ VALUE (*func_ii)(rb_transcoding*, VALUE); /* info -> info */
+ VALUE (*func_si)(rb_transcoding*, const unsigned char*, size_t); /*
start -> info */
+ int (*func_io)(rb_transcoding*, VALUE, const unsigned char*); /*
info -> output */
+ int (*func_so)(rb_transcoding*, const unsigned char*, size_t,
unsigned char*); /* start -> output */
+ int (*finish_func)(rb_transcoding*, unsigned char*); /* -> output
*/
} rb_transcoder;
void rb_declare_transcoder(const char *enc1, const char *enc2, const
char *lib);
Index: tool/transcode-tblgen.rb
===================================================================
--- tool/transcode-tblgen.rb (revision 18417)
+++ tool/transcode-tblgen.rb (working copy)
@@ -234,6 +234,12 @@ class ActionMap
"UNDEF"
when :invalid
"INVALID"
+ when :func_ii
+ "FUNii"
+ when :func_si
+ "FUNsi"
+ when :func_io
+ "FUNio"
when :func_so
"FUNso"
when /\A([0-9a-f][0-9a-f])\z/i
Index: test/ruby/test_transcode.rb
===================================================================
--- test/ruby/test_transcode.rb (revision 18417)
+++ test/ruby/test_transcode.rb (working copy)
@@ -321,12 +321,13 @@ class TestTranscode < Test::Unit::TestCa
assert_raise(RuntimeError) { "\x1b(A".encode("utf-8",
"iso-2022-jp") }
assert_raise(RuntimeError) { "\x1b$(A".encode("utf-8",
"iso-2022-jp") }
assert_raise(RuntimeError) { "\x1b$C".encode("utf-8",
"iso-2022-jp") }
- assert_raise(RuntimeError) { "\x1e".encode("utf-8", "iso-2022-jp")
}
+ assert_raise(RuntimeError) { "\x0e".encode("utf-8", "iso-2022-jp")
}
assert_raise(RuntimeError) { "\x80".encode("utf-8", "iso-2022-jp")
}
assert_raise(RuntimeError) { "\x1b$(Dd!\x1b(B".encode("utf-8",
"iso-2022-jp") }
assert_raise(RuntimeError) { "\u9299".encode("iso-2022-jp") }
- #@@@@ TODO: the next test should actually fail, because iso-2022-jp
does not include half-width kana
- check_both_ways("\uff71\uff72\uff73\uff74\uff75",
"\x1b(I12345\x1b(B", "iso-2022-jp") # JIS X 0201 ｧｨｩｪｫ
+ assert_raise(RuntimeError) { "\u9299".encode("iso-2022-jp") }
+ assert_raise(RuntimeError) {
"\uff71\uff72\uff73\uff74\uff75".encode("iso-2022-jp") }
+ assert_raise(RuntimeError) { "\x1b(I12345\x1b(B".encode("utf-8",
"iso-2022-jp") }
end
def test_iso_2022_jp_1
Index: transcode.c
===================================================================
--- transcode.c (revision 18417)
+++ transcode.c (working copy)
@@ -25,53 +25,78 @@ static VALUE sym_invalid, sym_undef, sym
* Dispatch data and logic
*/
-static st_table *transcoder_table, *transcoder_lib_table;
+typedef struct {
+ const char *from;
+ const char *to;
+ const char *lib; /* maybe null. it means that don't load the
library. */
+ const rb_transcoder *transcoder;
+} transcoder_entry_t;
-#define TRANSCODER_INTERNAL_SEPARATOR '\t'
+static st_table *transcoder_table;
-static char *
-transcoder_key(const char *from_e, const char *to_e)
+static transcoder_entry_t *
+make_transcoder_entry(const char *from, const char *to)
{
- int to_len = strlen(to_e);
- int from_len = strlen(from_e);
- char *const key = xmalloc(to_len + from_len + 2);
+ st_data_t val;
+ st_table *table2;
- memcpy(key, to_e, to_len);
- memcpy(key + to_len + 1, from_e, from_len + 1);
- key[to_len] = TRANSCODER_INTERNAL_SEPARATOR;
- return key;
+ if (!st_lookup(transcoder_table, (st_data_t)from, &val)) {
+ val = (st_data_t)st_init_strcasetable();
+ st_add_direct(transcoder_table, (st_data_t)from, val);
+ }
+ table2 = (st_table *)val;
+ if (!st_lookup(table2, (st_data_t)to, &val)) {
+ transcoder_entry_t *entry = ALLOC(transcoder_entry_t);
+ entry->from = from;
+ entry->to = to;
+ entry->lib = NULL;
+ entry->transcoder = NULL;
+ val = (st_data_t)entry;
+ st_add_direct(table2, (st_data_t)to, val);
+ }
+ return (transcoder_entry_t *)val;
+}
+
+static transcoder_entry_t *
+get_transcoder_entry(const char *from, const char *to)
+{
+ st_data_t val;
+ st_table *table2;
+
+ if (!st_lookup(transcoder_table, (st_data_t)from, &val)) {
+ return NULL;
+ }
+ table2 = (st_table *)val;
+ if (!st_lookup(table2, (st_data_t)to, &val)) {
+ return NULL;
+ }
+ return (transcoder_entry_t *)val;
}
void
rb_register_transcoder(const rb_transcoder *tr)
{
- st_data_t k, val = 0;
const char *const from_e = tr->from_encoding;
const char *const to_e = tr->to_encoding;
- char *const key = transcoder_key(from_e, to_e);
- if (st_lookup(transcoder_table, (st_data_t)key, &val)) {
- xfree(key);
+ transcoder_entry_t *entry;
+
+ entry = make_transcoder_entry(from_e, to_e);
+ if (entry->transcoder) {
rb_raise(rb_eArgError, "transcoder from %s to %s has been already
registered",
from_e, to_e);
}
- k = (st_data_t)key;
- if (st_delete(transcoder_lib_table, &k, &val)) {
- xfree((char *)k);
- }
- st_insert(transcoder_table, (st_data_t)key, (st_data_t)tr);
+
+ entry->transcoder = tr;
}
static void
declare_transcoder(const char *to, const char *from, const char *lib)
{
- const char *const key = transcoder_key(to, from);
- st_data_t k = (st_data_t)key, val;
+ transcoder_entry_t *entry;
- if (st_delete(transcoder_lib_table, &k, &val)) {
- xfree((char *)k);
- }
- st_insert(transcoder_lib_table, (st_data_t)key, (st_data_t)lib);
+ entry = make_transcoder_entry(from, to);
+ entry->lib = lib;
}
#define MAX_TRANSCODER_LIBNAME_LEN 64
@@ -90,38 +115,166 @@ rb_declare_transcoder(const char *enc1,
#define encoding_equal(enc1, enc2) (STRCASECMP(enc1, enc2) == 0)
+typedef struct search_path_queue_tag {
+ struct search_path_queue_tag *next;
+ const char *enc;
+} search_path_queue_t;
+
+typedef struct {
+ st_table *visited;
+ search_path_queue_t *queue;
+ search_path_queue_t **queue_last_ptr;
+ const char *base_enc;
+} search_path_bfs_t;
+
+static int
+transcode_search_path_i(st_data_t key, st_data_t val, st_data_t arg)
+{
+ const char *to = (const char *)key;
+ search_path_bfs_t *bfs = (search_path_bfs_t *)arg;
+ search_path_queue_t *q;
+
+ if (st_lookup(bfs->visited, (st_data_t)to, &val)) {
+ return ST_CONTINUE;
+ }
+
+ q = ALLOC(search_path_queue_t);
+ q->enc = to;
+ q->next = NULL;
+ *bfs->queue_last_ptr = q;
+ bfs->queue_last_ptr = &q->next;
+
+ st_add_direct(bfs->visited, (st_data_t)to,
(st_data_t)bfs->base_enc);
+ return ST_CONTINUE;
+}
+
+static int
+transcode_search_path(const char *from, const char *to,
+ void (*callback)(const char *from, const char *to, int depth, void
*arg),
+ void *arg)
+{
+ search_path_bfs_t bfs;
+ search_path_queue_t *q;
+ st_data_t val;
+ st_table *table2;
+ int found;
+
+ q = ALLOC(search_path_queue_t);
+ q->enc = from;
+ q->next = NULL;
+ bfs.queue_last_ptr = &q->next;
+ bfs.queue = q;
+
+ bfs.visited = st_init_strcasetable();
+ st_add_direct(bfs.visited, (st_data_t)from, (st_data_t)NULL);
+
+ while (bfs.queue) {
+ q = bfs.queue;
+ bfs.queue = q->next;
+ if (!bfs.queue)
+ bfs.queue_last_ptr = &bfs.queue;
+
+ if (!st_lookup(transcoder_table, (st_data_t)q->enc, &val)) {
+ xfree(q);
+ continue;
+ }
+ table2 = (st_table *)val;
+
+ if (st_lookup(table2, (st_data_t)to, &val)) {
+ st_add_direct(bfs.visited, (st_data_t)to,
(st_data_t)q->enc);
+ xfree(q);
+ found = 1;
+ goto cleanup;
+ }
+
+ bfs.base_enc = q->enc;
+ st_foreach(table2, transcode_search_path_i, (st_data_t)&bfs);
+ bfs.base_enc = NULL;
+
+ xfree(q);
+ }
+ found = 0;
+
+cleanup:
+ while (bfs.queue) {
+ q = bfs.queue;
+ bfs.queue = q->next;
+ xfree(q);
+ }
+
+ if (found) {
+ const char *enc = to;
+ int depth = 0;
+ while (1) {
+ st_lookup(bfs.visited, (st_data_t)enc, &val);
+ if (!val)
+ break;
+ depth++;
+ enc = (const char *)val;
+ }
+ enc = to;
+ while (1) {
+ st_lookup(bfs.visited, (st_data_t)enc, &val);
+ if (!val)
+ break;
+ callback((const char *)val, enc, --depth, arg);
+ enc = (const char *)val;
+ }
+ }
+
+ st_free_table(bfs.visited);
+
+ return found;
+}
+
+static void
+transcode_dispatch_cb(const char *from, const char *to, int depth, void
*arg)
+{
+ const rb_transcoder **first_transcoder_ptr = (const rb_transcoder
**)arg;
+
+ transcoder_entry_t *entry;
+
+ if (!*first_transcoder_ptr)
+ return;
+
+ entry = get_transcoder_entry(from, to);
+ if (!entry)
+ goto failed;
+
+ if (!entry->transcoder && entry->lib) {
+ const char *lib = entry->lib;
+ int len = strlen(lib);
+ char path[sizeof(transcoder_lib_prefix) +
MAX_TRANSCODER_LIBNAME_LEN];
+
+ entry->lib = NULL;
+
+ if (len > MAX_TRANSCODER_LIBNAME_LEN) goto failed;
+ memcpy(path, transcoder_lib_prefix,
sizeof(transcoder_lib_prefix) - 1);
+ memcpy(path + sizeof(transcoder_lib_prefix) - 1, lib, len + 1);
+ if (!rb_require(path)) goto failed;
+ }
+ if (!entry->transcoder)
+ goto failed;
+
+ if (depth == 0)
+ *first_transcoder_ptr = entry->transcoder;
+
+ return;
+
+failed:
+ *first_transcoder_ptr = NULL;
+ return;
+}
+
static const rb_transcoder *
transcode_dispatch(const char *from_encoding, const char *to_encoding)
{
- char *const key = transcoder_key(from_encoding, to_encoding);
- st_data_t k, val = 0;
+ const rb_transcoder *first_transcoder = (rb_transcoder *)1;
- while (!st_lookup(transcoder_table, (k = (st_data_t)key), &val) &&
- st_delete(transcoder_lib_table, &k, &val)) {
- const char *const lib = (const char *)val;
- int len = strlen(lib);
- char path[sizeof(transcoder_lib_prefix) +
MAX_TRANSCODER_LIBNAME_LEN];
-
- xfree((char *)k);
- if (len > MAX_TRANSCODER_LIBNAME_LEN) return NULL;
- memcpy(path, transcoder_lib_prefix, sizeof(transcoder_lib_prefix) -
1);
- memcpy(path + sizeof(transcoder_lib_prefix) - 1, lib, len + 1);
- if (!rb_require(path)) return NULL;
- }
- if (!val) {
- if (!st_lookup(transcoder_table, (st_data_t)key, &val)) {
- xfree(key);
- /* multistep logic, via UTF-8 */
- if (!encoding_equal(from_encoding, "UTF-8") &&
- !encoding_equal(to_encoding, "UTF-8") &&
- transcode_dispatch("UTF-8", to_encoding)) { /* check that we have
a second step */
- return transcode_dispatch(from_encoding, "UTF-8"); /* return first
step */
- }
- return NULL;
- }
+ if (transcode_search_path(from_encoding, to_encoding,
transcode_dispatch_cb, (void *)&first_transcoder)) {
+ return first_transcoder;
}
- xfree(key);
- return (rb_transcoder *)val;
+ return NULL;
}
static void
@@ -245,17 +398,17 @@ transcode_loop(const unsigned char **in_
*out_p++ = getBT3(next_info);
continue;
case FUNii:
- next_info = (VALUE)(*my_transcoder->func_ii)(next_info);
+ next_info = (VALUE)(*my_transcoder->func_ii)(my_transcoding,
next_info);
goto follow_info;
case FUNsi:
- next_info = (VALUE)(*my_transcoder->func_si)(char_start);
+ next_info = (VALUE)(*my_transcoder->func_si)(my_transcoding,
char_start, (size_t)(in_p-char_start));
goto follow_info;
break;
case FUNio:
- out_p += (VALUE)(*my_transcoder->func_io)(next_info, out_p);
+ out_p += (VALUE)(*my_transcoder->func_io)(my_transcoding,
next_info, out_p);
break;
case FUNso:
- out_p += (VALUE)(*my_transcoder->func_so)(char_start, out_p);
+ out_p += (VALUE)(*my_transcoder->func_so)(my_transcoding,
char_start, (size_t)(in_p-char_start), out_p);
break;
case INVALID:
goto invalid;
@@ -290,6 +443,16 @@ transcode_loop(const unsigned char **in_
continue;
}
/* cleanup */
+ if (my_transcoder->finish_func) {
+ if (out_p >= out_s) {
+ int len = (out_p - *out_pos);
+ int new_len = (len + my_transcoder->max_output) * 2;
+ *out_pos = (*my_transcoding->flush_func)(my_transcoding, len,
new_len);
+ out_p = *out_pos + len;
+ out_s = *out_pos + new_len - my_transcoder->max_output;
+ }
+ out_p += my_transcoder->finish_func(my_transcoding, out_p);
+ }
*in_pos = in_p;
*out_pos = out_p;
}
@@ -401,21 +564,8 @@ str_transcode(int argc, VALUE *argv, VAL
}
my_transcoding.transcoder = my_transcoder;
+ memset(my_transcoding.stateful, 0,
sizeof(my_transcoding.stateful));
- if (my_transcoder->preprocessor) {
- fromp = sp = (unsigned char *)RSTRING_PTR(str);
- slen = RSTRING_LEN(str);
- blen = slen + 30; /* len + margin */
- dest = rb_str_tmp_new(blen);
- bp = (unsigned char *)RSTRING_PTR(dest);
- my_transcoding.ruby_string_dest = dest;
- (*my_transcoder->preprocessor)(&fromp, &bp, (sp+slen), (bp+blen),
&my_transcoding);
- if (fromp != sp+slen) {
- rb_raise(rb_eArgError, "not fully converted, %"PRIdPTRDIFF" bytes
left", sp+slen-fromp);
- }
- rb_str_set_len(dest, (char *)bp - RSTRING_PTR(dest));
- str = dest;
- }
fromp = sp = (unsigned char *)RSTRING_PTR(str);
slen = RSTRING_LEN(str);
blen = slen + 30; /* len + margin */
@@ -431,21 +581,6 @@ str_transcode(int argc, VALUE *argv, VAL
buf = (unsigned char *)RSTRING_PTR(dest);
*bp = '\0';
rb_str_set_len(dest, bp - buf);
- if (my_transcoder->postprocessor) {
- str = dest;
- fromp = sp = (unsigned char *)RSTRING_PTR(str);
- slen = RSTRING_LEN(str);
- blen = slen + 30; /* len + margin */
- dest = rb_str_tmp_new(blen);
- bp = (unsigned char *)RSTRING_PTR(dest);
- my_transcoding.ruby_string_dest = dest;
- (*my_transcoder->postprocessor)(&fromp, &bp, (sp+slen),
(bp+blen), &my_transcoding);
- if (fromp != sp+slen) {
- rb_raise(rb_eArgError, "not fully converted, %"PRIdPTRDIFF" bytes
left", sp+slen-fromp);
- }
- buf = (unsigned char *)RSTRING_PTR(dest);
- rb_str_set_len(dest, bp - buf);
- }
if (encoding_equal(my_transcoder->to_encoding, to_e)) {
final_encoding = 1;
@@ -541,7 +676,6 @@ void
Init_transcode(void)
{
transcoder_table = st_init_strcasetable();
- transcoder_lib_table = st_init_strcasetable();
sym_invalid = ID2SYM(rb_intern("invalid"));
sym_undef = ID2SYM(rb_intern("undef"));
--
[田中 哲][たなか あきら][Tanaka Akira]
on 07.08.2008 14:34
on 07.08.2008 16:33
成瀬です。 Tanaka Akira wrote: > ISO-2022-JP の実装ですが、0x1e が shift だといってみたり、 > .... > するので、作りなおして以下のようにするのはどうでしょうか。 いいのではないでしょうか、一時的な実装のつもりでしたし。 一応ログに残しておく意味も含めて確認しておきますが、 この「ISO-2022-JP」は RFC 1468 であり、いわゆる半角カナは含まないのですよね。
on 07.08.2008 17:09
In article <489B07A6.8020303@airemix.jp>, "NARUSE, Yui" <naruse@airemix.jp> writes: > $B0l1~%m%0$K;D$7$F$*$/0UL#$b4^$a$F3NG'$7$F$*$-$^$9$,!"(B > $B$3$N!V(BISO-2022-JP$B!W$O(B RFC 1468 $B$G$"$j!"$$$o$f$kH>3Q%+%J$O4^$^$J$$$N$G$9$h$M!#(B $B$($'!"(BJIS X 0201 $BJR2>L>$O4^$s$G$$$^$;$s!#(B