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| author | Kenichi Handa <handa@m17n.org> | 2000-12-28 07:03:05 +0000 |
|---|---|---|
| committer | Kenichi Handa <handa@m17n.org> | 2000-12-28 07:03:05 +0000 |
| commit | a37520c6767b258fd1619300baa82ae81f13a3e6 (patch) | |
| tree | c1e8eed18c8f61e474fd19ef44b0570b17c7fed2 /src/ccl.c | |
| parent | 9371f8312a873619a44b4d6ea0f4334138c08822 (diff) | |
| download | emacs-a37520c6767b258fd1619300baa82ae81f13a3e6.tar.gz | |
(CCL_WRITE_CHAR): Check variable `extra_bytes'.
(ccl_driver): New local variable `extra_bytes'.
Diffstat (limited to 'src/ccl.c')
| -rw-r--r-- | src/ccl.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/src/ccl.c b/src/ccl.c index 0a710252ab8..2be97ba88af 100644 --- a/src/ccl.c +++ b/src/ccl.c @@ -698,26 +698,26 @@ static int stack_idx_of_map_multiple; /* Encode one character CH to multibyte form and write to the current output buffer. If CH is less than 256, CH is written as is. */ -#define CCL_WRITE_CHAR(ch) \ - do { \ - int bytes = SINGLE_BYTE_CHAR_P (ch) ? 1: CHAR_BYTES (ch); \ - if (!dst) \ - CCL_INVALID_CMD; \ - else if (dst + bytes <= (dst_bytes ? dst_end : src)) \ - { \ - if (bytes == 1) \ - { \ - *dst++ = (ch); \ - if ((ch) >= 0x80 && (ch) < 0xA0) \ - /* We may have to convert this eight-bit char to \ - multibyte form later. */ \ - dst_end--; \ - } \ - else \ - dst += CHAR_STRING (ch, dst); \ - } \ - else \ - CCL_SUSPEND (CCL_STAT_SUSPEND_BY_DST); \ +#define CCL_WRITE_CHAR(ch) \ + do { \ + int bytes = SINGLE_BYTE_CHAR_P (ch) ? 1: CHAR_BYTES (ch); \ + if (!dst) \ + CCL_INVALID_CMD; \ + else if (dst + bytes + extra_bytes < (dst_bytes ? dst_end : src)) \ + { \ + if (bytes == 1) \ + { \ + *dst++ = (ch); \ + if ((ch) >= 0x80 && (ch) < 0xA0) \ + /* We may have to convert this eight-bit char to \ + multibyte form later. */ \ + extra_bytes++; \ + } \ + else \ + dst += CHAR_STRING (ch, dst); \ + } \ + else \ + CCL_SUSPEND (CCL_STAT_SUSPEND_BY_DST); \ } while (0) /* Write a string at ccl_prog[IC] of length LEN to the current output @@ -840,6 +840,11 @@ ccl_driver (ccl, source, destination, src_bytes, dst_bytes, consumed) int stack_idx = ccl->stack_idx; /* Instruction counter of the current CCL code. */ int this_ic; + /* CCL_WRITE_CHAR will produce 8-bit code of range 0x80..0x9F. But, + each of them will be converted to multibyte form of 2-byte + sequence. For that conversion, we remember how many more bytes + we must keep in DESTINATION in this variable. */ + int extra_bytes = 0; if (ic >= ccl->eof_ic) ic = CCL_HEADER_MAIN; |