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-rw-r--r--lib/libalpm/delta.c33
1 files changed, 19 insertions, 14 deletions
diff --git a/lib/libalpm/delta.c b/lib/libalpm/delta.c
index 165cdef4..726f03c0 100644
--- a/lib/libalpm/delta.c
+++ b/lib/libalpm/delta.c
@@ -273,29 +273,32 @@ alpm_list_t SYMEXPORT *alpm_pkg_unused_deltas(alpm_pkg_t *pkg)
* This function assumes that the string is in the correct format.
* This format is as follows:
* $deltafile $deltamd5 $deltasize $oldfile $newfile
+ * @param handle the context handle
* @param line the string to parse
* @return A pointer to the new alpm_delta_t object
*/
-/* TODO this does not really belong here, but in a parsing lib */
-alpm_delta_t *_alpm_delta_parse(char *line)
+alpm_delta_t *_alpm_delta_parse(alpm_handle_t *handle, const char *line)
{
alpm_delta_t *delta;
- char *tmp;
const int num_matches = 6;
size_t len;
- regex_t reg;
regmatch_t pmatch[num_matches];
+ char filesize[32];
+
+ /* this is so we only have to compile the pattern once */
+ if(!handle->delta_regex_compiled) {
+ /* $deltafile $deltamd5 $deltasize $oldfile $newfile*/
+ regcomp(&handle->delta_regex,
+ "^([^[:space:]]+) ([[:xdigit:]]{32}) ([[:digit:]]+)"
+ " ([^[:space:]]+) ([^[:space:]]+)$",
+ REG_EXTENDED | REG_NEWLINE);
+ handle->delta_regex_compiled = 1;
+ }
- regcomp(&reg,
- "^([^[:space:]]*) ([[:xdigit:]]{32}) ([[:digit:]]*)"
- " ([^[:space:]]*) ([^[:space:]]*)$",
- REG_EXTENDED | REG_NEWLINE);
- if(regexec(&reg, line, num_matches, pmatch, 0) != 0) {
+ if(regexec(&handle->delta_regex, line, num_matches, pmatch, 0) != 0) {
/* delta line is invalid, return NULL */
- regfree(&reg);
return NULL;
}
- regfree(&reg);
CALLOC(delta, 1, sizeof(alpm_delta_t), return NULL);
@@ -307,9 +310,11 @@ alpm_delta_t *_alpm_delta_parse(char *line)
STRNDUP(delta->delta_md5, &line[pmatch[2].rm_so], len, return NULL);
len = pmatch[3].rm_eo - pmatch[3].rm_so;
- STRNDUP(tmp, &line[pmatch[3].rm_so], len, return NULL);
- delta->delta_size = _alpm_strtoofft(tmp);
- free(tmp);
+ if(len < sizeof(filesize)) {
+ strncpy(filesize, &line[pmatch[3].rm_so], len);
+ filesize[len] = '\0';
+ delta->delta_size = _alpm_strtoofft(filesize);
+ }
len = pmatch[4].rm_eo - pmatch[4].rm_so;
STRNDUP(delta->from, &line[pmatch[4].rm_so], len, return NULL);