From: Nathan Wagner <nw@hydaspes.if.org>
Date: Sun, 16 Sep 2018 13:16:30 +0000 (+0000)
Subject: add functions to find scripts and run a query
X-Git-Tag: v0.1.6~28
X-Git-Url: https://pd.if.org/git/?a=commitdiff_plain;ds=sidebyside;h=7fa585701657aa1969f2116e71bfcb18c00ca7f0;p=zpackage

add functions to find scripts and run a query
---

diff --git a/lib/dbquery.c b/lib/dbquery.c
new file mode 100644
index 0000000..c2f50b6
--- /dev/null
+++ b/lib/dbquery.c
@@ -0,0 +1,37 @@
+#include <stdarg.h>
+#include <string.h>
+
+#include "sqlite3.h"
+#include "zpm.h"
+
+sqlite3_stmt *zpm_dbquery(struct zpm *zpm, char *query, ...) {
+	sqlite3 *db;
+	char *sql;
+	va_list args;
+	sqlite3_stmt *st;
+	int rv;
+
+	if (!zpm || zpm->error || !zpm->db) {
+		zpm->error = 1;
+		return 0;
+	}
+
+	db = zpm->db;
+
+	va_start(args, query);
+	sql = sqlite3_vmprintf(query, args);
+	va_end(args);
+
+	if (!sql) {
+		zpm->error = 1;
+		return 0;
+	}
+
+	rv = sqlite3_prepare_v2(db, sql, strlen(sql), &st, NULL);
+	if (rv != SQLITE_OK) {
+		zpm->error = rv;
+		return 0;
+	}
+
+	return st;
+}
diff --git a/lib/script_hash.c b/lib/script_hash.c
new file mode 100644
index 0000000..d4f03fa
--- /dev/null
+++ b/lib/script_hash.c
@@ -0,0 +1,36 @@
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sqlite3.h"
+#include "zpm.h"
+
+int zpm_script_hash(struct zpm *zpm, char *pkgstr, char *phase, char *hash) {
+	char *pkgid;
+	char *template = "select hash from scripts_pkgid where pkgid = %q and phase = %q";
+	sqlite3_stmt *st;
+
+	pkgid = zpm_findpkg(zpm, pkgstr);
+
+	st = zpm_dbquery(zpm, template, pkgid, phase);
+	free(pkgid);
+
+	if (!st) {
+		return 0;
+	}
+
+	switch (sqlite3_step(st)) {
+		case SQLITE_ROW:
+			strncpy(hash, (const char *) sqlite3_column_text(st, 0),
+					ZPM_HASH_STRLEN);
+			hash[ZPM_HASH_STRLEN] = 0;
+			break;
+		default: zpm->error = 1; /* fall through */
+		case SQLITE_DONE:
+			sqlite3_finalize(st);
+		       	return 0; break; /* not found */
+	}
+
+	sqlite3_finalize(st);
+	return 1;
+}