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streams: remove confusing step variable

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Gina Peter Banyard 2025-07-12 12:06:48 +01:00
parent 02af9acfca
commit 4b6ebcc6e9
1 changed files with 6 additions and 7 deletions
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13
main/streams/streams.c
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@ -1534,8 +1534,6 @@ PHPAPI zend_string *_php_stream_copy_to_mem(php_stream *src, size_t maxlen, bool
ssize_t ret = 0;
char *ptr;
size_t len = 0, buflen;
int step = CHUNK_SIZE;
int min_room = CHUNK_SIZE / 4;
php_stream_statbuf ssbuf;
zend_string *result;
@ -1578,20 +1576,21 @@ PHPAPI zend_string *_php_stream_copy_to_mem(php_stream *src, size_t maxlen, bool
* we can. Note that the stream may be filtered, in which case the stat
* result may be inaccurate, as the filter may inflate or deflate the
* number of bytes that we can read. In order to avoid an upsize followed
* by a downsize of the buffer, overestimate by the step size (which is
* by a downsize of the buffer, overestimate by the CHUNK_SIZE size (which is
* 8K). */
if (php_stream_stat(src, &ssbuf) == 0 && ssbuf.sb.st_size > 0) {
buflen = MAX(ssbuf.sb.st_size - src->position, 0) + step;
buflen = MAX(ssbuf.sb.st_size - src->position, 0) + CHUNK_SIZE;
if (maxlen > 0 && buflen > maxlen) {
buflen = maxlen;
}
} else {
buflen = step;
buflen = CHUNK_SIZE;
}
result = zend_string_alloc(buflen, persistent);
ptr = ZSTR_VAL(result);
const int min_room = CHUNK_SIZE / 4;
// TODO: Propagate error?
while ((ret = php_stream_read(src, ptr, buflen - len)) > 0) {
len += ret;
@ -1599,10 +1598,10 @@ PHPAPI zend_string *_php_stream_copy_to_mem(php_stream *src, size_t maxlen, bool
if (maxlen == len) {
break;
}
if (maxlen > 0 && buflen + step > maxlen) {
if (maxlen > 0 && buflen + CHUNK_SIZE > maxlen) {
buflen = maxlen;
} else {
buflen += step;
buflen += CHUNK_SIZE;
}
result = zend_string_extend(result, buflen, persistent);
ptr = ZSTR_VAL(result) + len;