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* enc/big5.c (big5_mbc_enc_len): validation implemented.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15289 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2008-01-28 06:33:57 +00:00
parent 5f9bc1779e
commit ffbf8ab367
2 changed files with 59 additions and 2 deletions
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ChangeLog
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@ -1,3 +1,7 @@
Mon Jan 28 15:33:23 2008 Tanaka Akira <akr@fsij.org>
* enc/big5.c (big5_mbc_enc_len): validation implemented.
Mon Jan 28 13:02:02 2008 Tanaka Akira <akr@fsij.org>
* enc/euc_kr.c (euckr_mbc_enc_len): validation implemented.

57
enc/big5.c
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@ -48,10 +48,63 @@ static const int EncLen_BIG5[] = {
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
};
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, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* a */ F, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* b */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
/* 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, 1, 1, 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 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 9 */ F, F, F, F, F, F, F, F, F, F, F, F, F, F, F, F,
/* 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 */ 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, A, A, F
}
};
#undef A
#undef F
static int
big5_mbc_enc_len(const UChar* p, const UChar* end ARG_UNUSED, OnigEncoding enc ARG_UNUSED)
big5_mbc_enc_len(const UChar* p, const UChar* e, OnigEncoding enc ARG_UNUSED)
{
return EncLen_BIG5[*p];
int firstbyte = *p++;
state_t s = trans[0][firstbyte];
#define RETURN(n) \
return s == ACCEPT ? ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(n) : \
ONIGENC_CONSTRUCT_MBCLEN_INVALID()
if (s < 0) RETURN(1);
if (p == e) return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(EncLen_BIG5[firstbyte]-1);
s = trans[s][*p++];
RETURN(2);
#undef RETURN
}
static OnigCodePoint