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(detect_coding): Fix handling of coding->head_ascii.

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Be sure to call setup_coding_system when a proper coding system is
found.
(detect_coding_system): Fix handling of coding->head_ascii.
This commit is contained in:
Kenichi Handa 2008-06-04 07:53:59 +00:00
parent 07e810660a
commit c0e16b1436
2 changed files with 50 additions and 39 deletions
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82
src/coding.c
View file

@ -5782,6 +5782,7 @@ detect_coding (coding)
coding_set_source (coding);
src_end = coding->source + coding->src_bytes;
coding->head_ascii = 0;
/* If we have not yet decided the text encoding type, detect it
now. */
@ -5792,15 +5793,12 @@ detect_coding (coding)
int null_byte_found = 0, eight_bit_found = 0;
detect_info.checked = detect_info.found = detect_info.rejected = 0;
coding->head_ascii = -1;
for (src = coding->source; src < src_end; src++)
{
c = *src;
if (c & 0x80)
{
eight_bit_found = 1;
if (coding->head_ascii < 0)
coding->head_ascii = src - coding->source;
if (null_byte_found)
break;
}
@ -5810,16 +5808,19 @@ detect_coding (coding)
&& ! inhibit_iso_escape_detection
&& ! detect_info.checked)
{
if (coding->head_ascii < 0)
coding->head_ascii = src - coding->source;
if (detect_coding_iso_2022 (coding, &detect_info))
{
/* We have scanned the whole data. */
if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE))
/* We didn't find an 8-bit code. We may have
found a null-byte, but it's very rare that
a binary file confirm to ISO-2022. */
src = src_end;
{
/* We didn't find an 8-bit code. We may
have found a null-byte, but it's very
rare that a binary file confirm to
ISO-2022. */
src = src_end;
coding->head_ascii = src - coding->source;
}
detect_info.rejected |= ~CATEGORY_MASK_ISO_ESCAPE;
break;
}
}
@ -5829,10 +5830,11 @@ detect_coding (coding)
if (eight_bit_found)
break;
}
coding->head_ascii++;
}
else
coding->head_ascii++;
}
if (coding->head_ascii < 0)
coding->head_ascii = src - coding->source;
if (null_byte_found || eight_bit_found
|| coding->head_ascii < coding->src_bytes
@ -5886,23 +5888,23 @@ detect_coding (coding)
break;
}
}
if (i < coding_category_raw_text)
setup_coding_system (CODING_ID_NAME (this->id), coding);
else if (null_byte_found)
setup_coding_system (Qno_conversion, coding);
else if ((detect_info.rejected & CATEGORY_MASK_ANY)
== CATEGORY_MASK_ANY)
setup_coding_system (Qraw_text, coding);
else if (detect_info.rejected)
for (i = 0; i < coding_category_raw_text; i++)
if (! (detect_info.rejected & (1 << coding_priorities[i])))
{
this = coding_categories + coding_priorities[i];
setup_coding_system (CODING_ID_NAME (this->id), coding);
break;
}
}
if (i < coding_category_raw_text)
setup_coding_system (CODING_ID_NAME (this->id), coding);
else if (null_byte_found)
setup_coding_system (Qno_conversion, coding);
else if ((detect_info.rejected & CATEGORY_MASK_ANY)
== CATEGORY_MASK_ANY)
setup_coding_system (Qraw_text, coding);
else if (detect_info.rejected)
for (i = 0; i < coding_category_raw_text; i++)
if (! (detect_info.rejected & (1 << coding_priorities[i])))
{
this = coding_categories + coding_priorities[i];
setup_coding_system (CODING_ID_NAME (this->id), coding);
break;
}
}
}
else if (XINT (CODING_ATTR_CATEGORY (CODING_ID_ATTRS (coding->id)))
@ -7655,6 +7657,7 @@ detect_coding_system (src, src_chars, src_bytes, highest, multibytep,
coding.src_multibyte = multibytep;
coding.consumed = 0;
coding.mode |= CODING_MODE_LAST_BLOCK;
coding.head_ascii = 0;
detect_info.checked = detect_info.found = detect_info.rejected = 0;
@ -7666,7 +7669,6 @@ detect_coding_system (src, src_chars, src_bytes, highest, multibytep,
struct coding_system *this;
int c, i;
coding.head_ascii = -1;
/* Skip all ASCII bytes except for a few ISO2022 controls. */
for (; src < src_end; src++)
{
@ -7674,27 +7676,28 @@ detect_coding_system (src, src_chars, src_bytes, highest, multibytep,
if (c & 0x80)
{
eight_bit_found = 1;
if (coding.head_ascii < 0)
coding.head_ascii = src - coding.source;
if (null_byte_found)
break;
}
if (c < 0x20)
else if (c < 0x20)
{
if ((c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO)
&& ! inhibit_iso_escape_detection
&& ! detect_info.checked)
{
if (coding.head_ascii < 0)
coding.head_ascii = src - coding.source;
if (detect_coding_iso_2022 (&coding, &detect_info))
{
/* We have scanned the whole data. */
if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE))
/* We didn't find an 8-bit code. We may have
found a null-byte, but it's very rare that
a binary file confirm to ISO-2022. */
src = src_end;
{
/* We didn't find an 8-bit code. We may
have found a null-byte, but it's very
rare that a binary file confirm to
ISO-2022. */
src = src_end;
coding.head_ascii = src - coding.source;
}
detect_info.rejected |= ~CATEGORY_MASK_ISO_ESCAPE;
break;
}
}
@ -7704,10 +7707,11 @@ detect_coding_system (src, src_chars, src_bytes, highest, multibytep,
if (eight_bit_found)
break;
}
coding.head_ascii++;
}
else
coding.head_ascii++;
}
if (coding.head_ascii < 0)
coding.head_ascii = src - coding.source;
if (null_byte_found || eight_bit_found
|| coding.head_ascii < coding.src_bytes