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| author | Richard M. Stallman <rms@gnu.org> | 2013-07-19 12:15:51 -0400 |
|---|---|---|
| committer | Richard M. Stallman <rms@gnu.org> | 2013-07-19 12:15:51 -0400 |
| commit | a1aeeffedd3b05a33bdd73737651debbda00cf5f (patch) | |
| tree | 2f1688d0640a0cc9f620175d3d633bb3879a6df1 /src/coding.c | |
| parent | 8ba8eec59b955466c7080b268709a6d195fb69ee (diff) | |
| download | emacs-a1aeeffedd3b05a33bdd73737651debbda00cf5f.tar.gz | |
(decode_coding_utf_8): Add simple loop for fast processing of ASCII characters.
Diffstat (limited to 'src/coding.c')
| -rw-r--r-- | src/coding.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/coding.c b/src/coding.c index e779197bbde..385a22a188d 100644 --- a/src/coding.c +++ b/src/coding.c @@ -1363,6 +1363,45 @@ decode_coding_utf_8 (struct coding_system *coding) break; } + /* In the simple case, rapidly handle ordinary characters */ + if (multibytep && ! eol_dos + && charbuf < charbuf_end - 6 && src < src_end - 6) + { + while (charbuf < charbuf_end - 6 && src < src_end - 6) + { + c1 = *src; + if (c1 & 0x80) + break; + src++; + consumed_chars++; + *charbuf++ = c1; + + c1 = *src; + if (c1 & 0x80) + break; + src++; + consumed_chars++; + *charbuf++ = c1; + + c1 = *src; + if (c1 & 0x80) + break; + src++; + consumed_chars++; + *charbuf++ = c1; + + c1 = *src; + if (c1 & 0x80) + break; + src++; + consumed_chars++; + *charbuf++ = c1; + } + /* If we handled at least one character, restart the main loop. */ + if (src != src_base) + continue; + } + if (byte_after_cr >= 0) c1 = byte_after_cr, byte_after_cr = -1; else |