From 0909a72000b03332c5203b16b6a4e862c0662e03 Mon Sep 17 00:00:00 2001 From: Allan McRae Date: Wed, 13 Oct 2010 17:55:55 +1000 Subject: 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 --- lib/libalpm/db.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) (limited to 'lib/libalpm/db.c') 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: */ -- cgit v1.2.3-24-g4f1b