initial commit

c/meson.build

@@ -0,0 +1,20 @@
+project('postgresqldemo',
+	'c',
+	version : '1.0.0',
+	license : 'BSD-3',
+	default_options : [ 'b_ofast=if-release', 'b_march_native=if-release', 'b_ndebug=if-release' ]
+)
+
+#gtk_dep = dependency('gtk+-3.0', version : '>=3.0.0')
+# gmodule-export-2.0 is needed to connect the handlers
+#gmodule_dep = dependency('gmodule-export-2.0', version : '>=2.0')
+pg_dep = dependency('libpq', version : '>=8.0')
+
+cc = meson.get_compiler('c')
+
+sources = ['postgresql_demo.c']
+
+exe = executable('postgresql_demo',
+	sources,
+	dependencies : [pg_dep],
+	install : false)

c/postgresql_demo.c

@@ -0,0 +1,40 @@
+#include <libpq-fe.h>
+
+int main(int argc, char *argv[]) {
+	PGconn *conn;
+	PGresult *res;
+	int i;
+	int j;
+
+	conn = PQsetdbLogin("localhost", "5432", "", "", "database", "user", "password");
+	if (PQstatus(conn) != CONNECTION_OK) {
+		fprintf(stderr, "Connection to database failed: %s", PQerrorMessage(conn));
+		PQfinish(conn);
+		return 1;
+	}
+
+	res = PQexec(conn, "SELECT * FROM turista");
+	if (PQresultStatus(res) != PGRES_TUPLES_OK) {
+		fprintf(stderr, "SELECT failed: %s", PQerrorMessage(conn));
+		PQclear(res);
+		PQfinish(conn);
+		return 1;
+	}
+
+	for (i = 0; i < PQnfields(res); i++) {
+		printf("%-20s", PQfname(res, i));
+	}
+	printf("\n\n");
+
+	for (i = 0; i < PQntuples(res); i++){
+		for (j = 0; j < PQnfields(res); j++) {
+			printf("%-20s", PQgetvalue(res, i, j));
+		}
+		printf("\n");
+	}
+
+	PQclear(res);
+
+	PQfinish(conn);
+	return 0;
+}