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charset_conv: use our own UTF-8 check with ENCA only

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Some charsets can look like valid UTF-8, but aren't UTF-8. One example
is ISO-2022-JP. While ENCA apparently likes to get misdetect real UTF-8,
this is not the case with uchardet. uchardet can detect ISO-2022-JP
correctly, but didn't even get to try, because our own UTF-8 check
succeeded. So run the UTF-8 check when using ENCA only.

Fixes #2195.
This commit is contained in:
wm4 2015-08-04 18:58:58 +02:00
parent 3ab6155d21
commit e5d3180889
1 changed files with 5 additions and 6 deletions
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11
misc/charset_conv.c
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@ -107,6 +107,11 @@ static const char *ms_bom_guess(bstr buf)
#if HAVE_ENCA
static const char *enca_guess(struct mp_log *log, bstr buf, const char *language)
{
// Do our own UTF-8 detection, because ENCA seems to get it wrong sometimes
// (suggested by divVerent). Explicitly allow cut-off UTF-8.
if (bstr_validate_utf8(buf) > -8)
return "UTF-8";
if (!language || !language[0])
language = "__"; // neutral language
@ -202,12 +207,6 @@ const char *mp_charset_guess(void *talloc_ctx, struct mp_log *log, bstr buf,
#endif
}
// Do our own UTF-8 detection, because at least ENCA seems to get it
// wrong sometimes (suggested by divVerent).
int r = bstr_validate_utf8(buf);
if (r >= 0 || (r > -8 && (flags & MP_ICONV_ALLOW_CUTOFF)))
return "UTF-8";
bstr params[3] = {{0}};
split_colon(user_cp, 3, params);