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Go Back   Linux Archive > ArchLinux > ArchLinux Pacman Development

 
 
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Old 12-23-2011, 07:40 PM
Dan McGee
 
Default be_package: be more explicit parsing key/value pairs

This eliminates the need for strtrim() usage completely, instead relying
on the fact that the only allowed delimiter between key and value is the
" = " string.

Signed-off-by: Dan McGee <dan@archlinux.org>
---
lib/libalpm/be_package.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index 41ecc75..c602996 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -171,18 +171,21 @@ static int parse_descfile(alpm_handle_t *handle, struct archive *a, alpm_pkg_t *
size_t len = _alpm_strip_newline(buf.line);

linenum++;
- if(len == 0 || buf.line[0] == '#') {
+ key = buf.line;
+ if(len == 0 || key[0] == '#') {
continue;
}
- ptr = buf.line;
- key = strsep(&ptr, "=");
- if(key == NULL || ptr == NULL) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "%s: syntax error in description file line %d
",
- newpkg->name ? newpkg->name : "error", linenum);
+ /* line is always in this format: "key = value"
+ * we can be sure the " = " exists, so look for that */
+ ptr = memchr(key, ' ', len);
+ if(!ptr || ptr - key + 2 > len || memcmp(ptr, " = ", 3) != 0) {
+ _alpm_log(handle, ALPM_LOG_DEBUG,
+ "%s: syntax error in description file line %d
",
+ newpkg->name ? newpkg->name : "error", linenum);
} else {
- key = _alpm_strtrim(key);
- while(*ptr == ' ') ptr++;
- ptr = _alpm_strtrim(ptr);
+ /* NULL the end of the key portion, move ptr to start of value */
+ *ptr = '';
+ ptr += 3;
if(strcmp(key, "pkgname") == 0) {
STRDUP(newpkg->name, ptr, return -1);
newpkg->name_hash = _alpm_hash_sdbm(newpkg->name);
--
1.7.8.1
 

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