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authorAllan McRae <allan@archlinux.org>2010-10-13 17:55:55 +1000
committerAllan McRae <allan@archlinux.org>2010-10-13 23:53:18 +1000
commit0909a72000b03332c5203b16b6a4e862c0662e03 (patch)
treefb82a6174d6938cf6a1902a0aa336176f818da6b /lib/libalpm/db.c
parentc56b576f6fef464f82f425219ef386fe8b742899 (diff)
Move database handling utility functions
Move splitname, checkdbdir, get_pkgpath into db.{h,c} as these will be needed to parse both the local and sync databases during the initial splitting. They will be moved out of db.{h,c} at to more appropriate locations at a later stage. Signed-off-by: Allan McRae <allan@archlinux.org>
Diffstat (limited to 'lib/libalpm/db.c')
-rw-r--r--lib/libalpm/db.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index b61631a5..d2844f8b 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -562,4 +562,81 @@ pmdb_t *_alpm_db_register_sync(const char *treename)
return(db);
}
+
+int splitname(const char *target, pmpkg_t *pkg)
+{
+ /* the format of a db entry is as follows:
+ * package-version-rel/
+ * package name can contain hyphens, so parse from the back- go back
+ * two hyphens and we have split the version from the name.
+ */
+ char *tmp, *p, *q;
+
+ if(target == NULL || pkg == NULL) {
+ return(-1);
+ }
+ STRDUP(tmp, target, RET_ERR(PM_ERR_MEMORY, -1));
+ p = tmp + strlen(tmp);
+
+ /* do the magic parsing- find the beginning of the version string
+ * by doing two iterations of same loop to lop off two hyphens */
+ for(q = --p; *q && *q != '-'; q--);
+ for(p = --q; *p && *p != '-'; p--);
+ if(*p != '-' || p == tmp) {
+ return(-1);
+ }
+
+ /* copy into fields and return */
+ if(pkg->version) {
+ FREE(pkg->version);
+ }
+ STRDUP(pkg->version, p+1, RET_ERR(PM_ERR_MEMORY, -1));
+ /* insert a terminator at the end of the name (on hyphen)- then copy it */
+ *p = '\0';
+ if(pkg->name) {
+ FREE(pkg->name);
+ }
+ STRDUP(pkg->name, tmp, RET_ERR(PM_ERR_MEMORY, -1));
+
+ free(tmp);
+ return(0);
+}
+
+
+/* TODO: move these two functions to be_local once be_sync no longer uses them */
+
+int checkdbdir(pmdb_t *db)
+{
+ struct stat buf;
+ const char *path = _alpm_db_path(db);
+
+ if(stat(path, &buf) != 0) {
+ _alpm_log(PM_LOG_DEBUG, "database dir '%s' does not exist, creating it\n",
+ path);
+ if(_alpm_makepath(path) != 0) {
+ RET_ERR(PM_ERR_SYSTEM, -1);
+ }
+ } else if(!S_ISDIR(buf.st_mode)) {
+ _alpm_log(PM_LOG_WARNING, _("removing invalid database: %s\n"), path);
+ if(unlink(path) != 0 || _alpm_makepath(path) != 0) {
+ RET_ERR(PM_ERR_SYSTEM, -1);
+ }
+ }
+ return(0);
+}
+
+/* Note: the return value must be freed by the caller */
+char *get_pkgpath(pmdb_t *db, pmpkg_t *info)
+{
+ size_t len;
+ char *pkgpath;
+ const char *dbpath;
+
+ dbpath = _alpm_db_path(db);
+ len = strlen(dbpath) + strlen(info->name) + strlen(info->version) + 3;
+ MALLOC(pkgpath, len, RET_ERR(PM_ERR_MEMORY, NULL));
+ sprintf(pkgpath, "%s%s-%s/", dbpath, info->name, info->version);
+ return(pkgpath);
+}
+
/* vim: set ts=2 sw=2 noet: */