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(detect_coding_iso2022, detect_coding_mask): Ignore

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invalid ESC sequence for ISO 2022.
(Fencode_sjis_char, Fencode_big5_char): Adjusted for the change of
SPLIT_CHAR.
This commit is contained in:
Kenichi Handa 1997-04-07 07:12:13 +00:00
parent 39e16e513f
commit bcf26d6a7d
1 changed files with 26 additions and 19 deletions
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45
src/coding.c
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@ -581,13 +581,9 @@ int
detect_coding_iso2022 (src, src_end)
unsigned char *src, *src_end;
{
unsigned char c, g1 = 0;
int mask = (CODING_CATEGORY_MASK_ISO_7
| CODING_CATEGORY_MASK_ISO_8_1
| CODING_CATEGORY_MASK_ISO_8_2);
/* We may look ahead at most 4 bytes. */
unsigned char *adjusted_src_end = src_end - 4;
int i;
int mask = CODING_CATEGORY_MASK_ANY;
int g1 = 0; /* 1 iff designating to G1. */
int c, i;
while (src < src_end)
{
@ -598,14 +594,21 @@ detect_coding_iso2022 (src, src_end)
if (src >= src_end)
break;
c = *src++;
if (src + 2 >= src_end
if (src < src_end
&& ((c >= '(' && c <= '/')
|| c == '$' && ((*src >= '(' && *src <= '/')
|| (*src >= '@' && *src <= 'B'))))
{
/* Valid designation sequence. */
mask &= (CODING_CATEGORY_MASK_ISO_7
| CODING_CATEGORY_MASK_ISO_8_1
| CODING_CATEGORY_MASK_ISO_8_2
| CODING_CATEGORY_MASK_ISO_ELSE);
if (c == ')' || (c == '$' && *src == ')'))
g1 = 1;
{
g1 = 1;
mask &= ~CODING_CATEGORY_MASK_ISO_7;
}
src++;
break;
}
@ -2362,6 +2365,7 @@ detect_coding_mask (src, src_bytes)
/* At first, skip all ASCII characters and control characters except
for three ISO2022 specific control characters. */
label_loop_detect_coding:
while (src < src_end)
{
c = *src;
@ -2378,10 +2382,15 @@ detect_coding_mask (src, src_bytes)
/* The text seems to be encoded in some multilingual coding system.
Now, try to find in which coding system the text is encoded. */
if (c < 0x80)
/* i.e. (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) */
/* C is an ISO2022 specific control code of C0. */
mask = detect_coding_iso2022 (src, src_end);
{
/* i.e. (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) */
/* C is an ISO2022 specific control code of C0. */
mask = detect_coding_iso2022 (src, src_end);
src++;
if (mask == CODING_CATEGORY_MASK_ANY)
/* No valid ISO2022 code follows C. Try again. */
goto label_loop_detect_coding;
}
else if (c == ISO_CODE_SS2 || c == ISO_CODE_SS3 || c == ISO_CODE_CSI)
/* C is an ISO2022 specific control code of C1,
or the first byte of SJIS's 2-byte character code,
@ -3225,8 +3234,7 @@ Return the corresponding character code in SJIS.")
(ch)
Lisp_Object ch;
{
int charset;
unsigned char c1, c2, s1, s2;
int charset, c1, c2, s1, s2;
Lisp_Object val;
CHECK_NUMBER (ch, 0);
@ -3234,7 +3242,7 @@ Return the corresponding character code in SJIS.")
if (charset == charset_jisx0208)
{
ENCODE_SJIS (c1, c2, s1, s2);
XSETFASTINT (val, ((int)s1 << 8) | s2);
XSETFASTINT (val, (s1 << 8) | s2);
}
else
XSETFASTINT (val, 0);
@ -3265,8 +3273,7 @@ Return the corresponding character code in Big5.")
(ch)
Lisp_Object ch;
{
int charset;
unsigned char c1, c2, b1, b2;
int charset, c1, c2, b1, b2;
Lisp_Object val;
CHECK_NUMBER (ch, 0);
@ -3274,7 +3281,7 @@ Return the corresponding character code in Big5.")
if (charset == charset_big5_1 || charset == charset_big5_2)
{
ENCODE_BIG5 (charset, c1, c2, b1, b2);
XSETFASTINT (val, ((int)b1 << 8) | b2);
XSETFASTINT (val, (b1 << 8) | b2);
}
else
XSETFASTINT (val, 0);