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* transcode.c (allocate_converted_string): add arguments for a buffer

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allocated by caller.
  (rb_econv_insert_output): provide caller allocated buffer to
  allocate_converted_string.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19159 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-09-05 18:20:20 +00:00
parent f0d9f949e8
commit 80abde2c89
2 changed files with 44 additions and 17 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
Sat Sep 6 03:18:17 2008 Tanaka Akira <akr@fsij.org>
* transcode.c (allocate_converted_string): add arguments for a buffer
allocated by caller.
(rb_econv_insert_output): provide caller allocated buffer to
allocate_converted_string.
Sat Sep 6 02:58:53 2008 Tanaka Akira <akr@fsij.org>
* transcode.c (str_transcode_enc_args): local variables renamed.

54
transcode.c
View file

@ -1327,11 +1327,12 @@ rb_econv_encoding_to_insert_output(rb_econv_t *ec)
static unsigned char *
allocate_converted_string(const char *sname, const char *dname,
const unsigned char *str, size_t len,
unsigned char *caller_dst_buf, size_t caller_dst_bufsize,
size_t *dst_len_ptr)
{
unsigned char *dst_str;
size_t dst_len;
size_t dst_bufsize = len;
size_t dst_bufsize;
rb_econv_t *ec;
rb_econv_result_t res;
@ -1339,13 +1340,20 @@ allocate_converted_string(const char *sname, const char *dname,
const unsigned char *sp;
unsigned char *dp;
if (dst_bufsize == 0)
dst_bufsize += 1;
if (caller_dst_buf)
dst_bufsize = caller_dst_bufsize;
else if (len == 0)
dst_bufsize = 1;
else
dst_bufsize = len;
ec = rb_econv_open(sname, dname, 0);
if (ec == NULL)
return NULL;
dst_str = xmalloc(dst_bufsize);
if (caller_dst_buf)
dst_str = caller_dst_buf;
else
dst_str = xmalloc(dst_bufsize);
dst_len = 0;
sp = str;
dp = dst_str+dst_len;
@ -1353,24 +1361,34 @@ allocate_converted_string(const char *sname, const char *dname,
dst_len = dp - dst_str;
while (res == econv_destination_buffer_full) {
if (dst_bufsize * 2 < dst_bufsize) {
xfree(dst_str);
rb_econv_close(ec);
return NULL;
goto fail;
}
dst_bufsize *= 2;
dst_str = xrealloc(dst_str, dst_bufsize);
if (dst_str == caller_dst_buf) {
unsigned char *tmp;
tmp = xmalloc(dst_bufsize);
memcpy(tmp, dst_str, dst_bufsize/2);
dst_str = tmp;
}
else {
dst_str = xrealloc(dst_str, dst_bufsize);
}
dp = dst_str+dst_len;
res = rb_econv_convert(ec, &sp, str+len, &dp, dst_str+dst_bufsize, 0);
dst_len = dp - dst_str;
}
if (res != econv_finished) {
xfree(dst_str);
rb_econv_close(ec);
return NULL;
goto fail;
}
rb_econv_close(ec);
*dst_len_ptr = dst_len;
return dst_str;
fail:
if (dst_str != caller_dst_buf)
xfree(dst_str);
rb_econv_close(ec);
return NULL;
}
/* result: 0:success -1:failure */
@ -1379,7 +1397,8 @@ rb_econv_insert_output(rb_econv_t *ec,
const unsigned char *str, size_t len, const char *str_encoding)
{
const char *insert_encoding = rb_econv_encoding_to_insert_output(ec);
const unsigned char *insert_str;
unsigned char insert_buf[4096];
const unsigned char *insert_str = NULL;
size_t insert_len;
rb_transcoding *tc;
@ -1399,7 +1418,8 @@ rb_econv_insert_output(rb_econv_t *ec,
insert_len = len;
}
else {
insert_str = allocate_converted_string(str_encoding, insert_encoding, str, len, &insert_len);
insert_str = allocate_converted_string(str_encoding, insert_encoding,
str, len, insert_buf, sizeof(insert_buf), &insert_len);
if (insert_str == NULL)
return -1;
}
@ -1471,12 +1491,12 @@ rb_econv_insert_output(rb_econv_t *ec,
memcpy(*data_end_p, insert_str, insert_len);
*data_end_p += insert_len;
if (insert_str != str)
if (insert_str != str && insert_str != insert_buf)
xfree((void*)insert_str);
return 0;
fail:
if (insert_str != str)
if (insert_str != str && insert_str != insert_buf)
xfree((void*)insert_str);
return -1;
}
@ -1809,7 +1829,7 @@ make_replacement(rb_econv_t *ec)
ins_enc = rb_econv_encoding_to_insert_output(ec);
if (*repl_enc && !encoding_equal(repl_enc, ins_enc)) {
replacement = allocate_converted_string(repl_enc, ins_enc, replacement, len, &len);
replacement = allocate_converted_string(repl_enc, ins_enc, replacement, len, NULL, 0, &len);
if (!replacement)
return -1;
allocated = 1;
@ -1839,7 +1859,7 @@ rb_econv_set_replacemenet(rb_econv_t *ec,
encname2 = encname;
}
else {
str2 = allocate_converted_string(encname, encname2, str, len, &len2);
str2 = allocate_converted_string(encname, encname2, str, len, NULL, 0, &len2);
if (!str2)
return -1;
}