+char *zpm_findlib(struct zpm *zpm, char *soname, char *where) {
+ char *select = "select pkgid, package, version, release from packagefiles_status join elflibraries on file = hash";
+ char *group = "order by package, version collate vercmp desc, cast(release as integer)";
+ sqlite3_str *sql;
+ char *query, *pkgid = 0;
+
+ /* null pkgstr find "best" package
+ * best is shortest complete package if any are complete
+ * shortest incomplete if any are incomplete
+ * where more than one version is in those sets, best is
+ * latest as determined by vercmp
+ */
+
+ sql = sqlite3_str_new(zpm->db);
+
+ sqlite3_str_appendall(sql, select);
+ sqlite3_str_appendf(sql, " where soname = %Q", soname);
+
+ if (where) {
+ sqlite3_str_appendall(sql, " and ");
+ sqlite3_str_appendall(sql, where);
+ }
+
+ sqlite3_str_appendall(sql, " ");
+ sqlite3_str_appendall(sql, group);
+ sqlite3_str_appendall(sql, " limit 1;");
+
+ if (sqlite3_str_errcode(sql)) {
+ zpm->error = 1;
+ sqlite3_free(sqlite3_str_finish(sql));
+ return 0;
+ }
+
+ query = sqlite3_str_finish(sql);
+
+ pkgid = zpm_db_string(zpm, query);;
+
+ sqlite3_free(query);
+
+ return pkgid;
+}
+
+int zpm_libraries_needed(struct zpm *zpm, char *pkgid, jsw_atree_t *list) {
+ char *pkglibsneeded = "\
+ with pkglibs as (\
+ select distinct EN.needed as soname, PF.pkgid\
+ from elfneeded EN\
+ join packagefiles_pkgid PF on PF.hash = EN.file\
+ ),\
+ pkgprovides as (\
+ select distinct EL.soname, PF.pkgid\
+ from elflibraries EL\
+ join packagefiles_pkgid PF on PF.hash = EL.file\
+ )\
+ select distinct PL.soname, PP.soname is not null as selfsatisfied\
+ from pkglibs PL\
+ left join pkgprovides PP on PL.pkgid = PP.pkgid and PL.soname = PP.soname\
+ where PL.pkgid = %Q\
+ ";
+
+ sqlite3_stmt *st;
+ int count = 0;
+ int rv;
+
+ st = zpm_dbquery(zpm, pkglibsneeded, pkgid);
+
+ while ((rv = sqlite3_step(st)) == SQLITE_ROW) {
+ char *soname;
+ int self;
+
+ soname = (char *)sqlite3_column_text(st, 0);
+ /* TODO check and skip self sats */
+ self = sqlite3_column_int(st,1);
+ if (self) {
+ continue;
+ }
+ count++;
+
+ /* if it's in needed, we've already looked at this one */
+ if (list && !jsw_afind(list, soname)) {
+ jsw_ainsert(list, soname);
+ }
+ }
+
+ sqlite3_finalize(st);
+ return count;
+}
+