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authorakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-12-06 09:28:26 +0000
committerakr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-12-06 09:28:26 +0000
commit69406aad505414de34dc8b560ac1eadf147b0dbc (patch)
tree161d7248925c7bd2c99d3ed6a341e81ba76b40c4 /enc/sjis.c
parentde4ec689910c07a48b81083adc3130b6b6023be3 (diff)
* encoding.c (rb_enc_precise_mbclen): new function for mbclen with
validation. * include/ruby/encoding.h (rb_enc_precise_mbclen): declared. (MBCLEN_CHARFOUND): new macro. (MBCLEN_INVALID): new macro. (MBCLEN_NEEDMORE): new macro. * include/ruby/oniguruma.h (OnigEncodingTypeST): replace mbc_enc_len by precise_mbc_enc_len. (ONIGENC_PRECISE_MBC_ENC_LEN): new macro. (ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND): new macro. (ONIGENC_CONSTRUCT_MBCLEN_INVALID): new macro. (ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE): new macro. (ONIGENC_MBCLEN_CHARFOUND): new macro. (ONIGENC_MBCLEN_INVALID): new macro. (ONIGENC_MBCLEN_NEEDMORE): new macro. (ONIGENC_MBC_ENC_LEN): use ONIGENC_PRECISE_MBC_ENC_LEN. * enc/euc_jp.c: validation implemented. * enc/sjis.c: ditto. * enc/utf8.c: ditto. * string.c (rb_str_inspect): use rb_enc_precise_mbclen for invalid encoding. (rb_str_valid_encoding_p): new method String#valid_encoding?. * io.c (rb_io_getc): use rb_enc_precise_mbclen. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14119 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'enc/sjis.c')
-rw-r--r--enc/sjis.c54
1 files changed, 53 insertions, 1 deletions
diff --git a/enc/sjis.c b/enc/sjis.c
index fbfddcc612..ff7da34279 100644
--- a/enc/sjis.c
+++ b/enc/sjis.c
@@ -70,10 +70,62 @@ static const char SJIS_CAN_BE_TRAIL_TABLE[256] = {
#define SJIS_ISMB_FIRST(byte) (EncLen_SJIS[byte] > 1)
#define SJIS_ISMB_TRAIL(byte) SJIS_CAN_BE_TRAIL_TABLE[(byte)]
+typedef enum { FAILURE = -2, ACCEPT = -1, S0 = 0, S1 } state_t;
+#define A ACCEPT
+#define F FAILURE
+static const signed char trans[][0x100] = {
+ { /* S0 0 1 2 3 4 5 6 7 8 9 a b c d e f */
+ /* 0 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 1 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 2 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 3 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 8 */ F, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ /* 9 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ /* a */ F, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* c */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* d */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ /* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, F, F, F
+ },
+ { /* S1 0 1 2 3 4 5 6 7 8 9 a b c d e f */
+ /* 0 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
+ /* 1 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
+ /* 2 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
+ /* 3 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
+ /* 4 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 5 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 6 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 7 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, F,
+ /* 8 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* 9 */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* a */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* b */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* c */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* d */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* e */ A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A,
+ /* f */ A, A, A, A, A, A, A, A, A, A, A, A, A, F, F, F
+ }
+};
+#undef A
+#undef F
+
static int
mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc)
{
- return EncLen_SJIS[*p];
+ int firstbyte = *p++;
+ state_t s;
+ s = trans[0][firstbyte];
+ if (s < 0) return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(1) :
+ ONIGENC_CONSTRUCT_MBCLEN_INVALID();
+ if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_SJIS[firstbyte]-1);
+ s = trans[s][*p++];
+ return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(2) :
+ ONIGENC_CONSTRUCT_MBCLEN_INVALID();
}
static int