pulse: Add a JSON-parsing library

Adding this to be able to drop dependency on json-c.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=95135

Signed-off-by: Arun Raghavan <arun@arunraghavan.net>

1 files changed, 244 insertions, 0 deletions

diff --git a/src/tests/json-test.c b/src/tests/json-test.c
new file mode 100644
index 000000000..e028e6801
--- /dev/null
+++ b/src/tests/json-test.c
@@ -0,0 +1,244 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2016 Arun Raghavan <mail@arunraghavan.net>
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <check.h>
+
+#include <pulse/json.h>
+#include <pulsecore/core-util.h>
+
+#define IS_EQUAL(x, y) (((x) - (y)) < 0.000001 && ((x) - (y)) > -0.000001)
+
+START_TEST (string_test) {
+    pa_json_object *o;
+    unsigned int i;
+    const char *strings_parse[] = {
+        "\"\"", "\"test\"", "\"test123\"", "\"123\"", "\"newline\\n\"", "\"  spaces \"",
+        "   \"lots of spaces\"     ", "\"esc\\nape\"", "\"escape a \\\" quote\"",
+    };
+    const char *strings_compare[] = {
+        "", "test", "test123", "123", "newline\n", "  spaces ",
+        "lots of spaces", "esc\nape", "escape a \" quote",
+    };
+
+    for (i = 0; i < PA_ELEMENTSOF(strings_parse); i++) {
+        o = pa_json_parse(strings_parse[i]);
+
+        fail_unless(o != NULL);
+        fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_STRING);
+        fail_unless(pa_streq(pa_json_object_get_string(o), strings_compare[i]));
+
+        pa_json_object_unref(o);
+    }
+}
+END_TEST
+
+START_TEST(int_test) {
+    pa_json_object *o;
+    unsigned int i;
+    const char *ints_parse[] = { "1", "-1", "1234", "0" };
+    const int ints_compare[] = { 1, -1, 1234, 0 };
+
+    for (i = 0; i < PA_ELEMENTSOF(ints_parse); i++) {
+        o = pa_json_parse(ints_parse[i]);
+
+        fail_unless(o != NULL);
+        fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_INT);
+        fail_unless(pa_json_object_get_int(o) == ints_compare[i]);
+
+        pa_json_object_unref(o);
+    }
+}
+END_TEST
+
+START_TEST(double_test) {
+    pa_json_object *o;
+    unsigned int i;
+    const char *doubles_parse[] = {
+        "1.0", "-1.1", "1234e2", "1234e0", "0.1234", "-0.1234", "1234e-1", "1234.5e-1", "1234.5e+2",
+    };
+    const double doubles_compare[] = {
+        1.0, -1.1, 123400.0, 1234.0, 0.1234, -0.1234, 123.4, 123.45, 123450.0,
+    };
+
+    for (i = 0; i < PA_ELEMENTSOF(doubles_parse); i++) {
+        o = pa_json_parse(doubles_parse[i]);
+
+        fail_unless(o != NULL);
+        fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_DOUBLE);
+        fail_unless(IS_EQUAL(pa_json_object_get_double(o), doubles_compare[i]));
+
+        pa_json_object_unref(o);
+    }
+}
+END_TEST
+
+START_TEST(null_test) {
+    pa_json_object *o;
+
+    o = pa_json_parse("null");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_NULL);
+
+    pa_json_object_unref(o);
+}
+END_TEST
+
+START_TEST(bool_test) {
+    pa_json_object *o;
+
+    o = pa_json_parse("true");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_BOOL);
+    fail_unless(pa_json_object_get_bool(o) == true);
+
+    pa_json_object_unref(o);
+
+    o = pa_json_parse("false");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_BOOL);
+    fail_unless(pa_json_object_get_bool(o) == false);
+
+    pa_json_object_unref(o);
+}
+END_TEST
+
+START_TEST(object_test) {
+    pa_json_object *o;
+    const pa_json_object *v;
+
+    o = pa_json_parse(" { \"name\" : \"A Person\" } ");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_OBJECT);
+
+    v = pa_json_object_get_object_member(o, "name");
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_STRING);
+    fail_unless(pa_streq(pa_json_object_get_string(v), "A Person"));
+
+    pa_json_object_unref(o);
+
+    o = pa_json_parse(" { \"age\" : -45.3e-0 } ");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_OBJECT);
+
+    v = pa_json_object_get_object_member(o, "age");
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_DOUBLE);
+    fail_unless(IS_EQUAL(pa_json_object_get_double(v), -45.3));
+
+    pa_json_object_unref(o);
+
+    o = pa_json_parse("{\"person\":true}");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_OBJECT);
+
+    v = pa_json_object_get_object_member(o, "person");
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_BOOL);
+    fail_unless(pa_json_object_get_bool(v) == true);
+
+    pa_json_object_unref(o);
+}
+END_TEST
+
+START_TEST(array_test) {
+    pa_json_object *o;
+    const pa_json_object *v, *v2;
+
+    o = pa_json_parse(" [  ] ");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_ARRAY);
+    fail_unless(pa_json_object_get_array_length(o) == 0);
+
+    pa_json_object_unref(o);
+
+    o = pa_json_parse("[\"a member\"]");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_ARRAY);
+    fail_unless(pa_json_object_get_array_length(o) == 1);
+
+    v = pa_json_object_get_array_member(o, 0);
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_STRING);
+    fail_unless(pa_streq(pa_json_object_get_string(v), "a member"));
+
+    pa_json_object_unref(o);
+
+    o = pa_json_parse("[\"a member\", 1234.5, { \"another\": true } ]");
+
+    fail_unless(o != NULL);
+    fail_unless(pa_json_object_get_type(o) == PA_JSON_TYPE_ARRAY);
+    fail_unless(pa_json_object_get_array_length(o) == 3);
+
+    v = pa_json_object_get_array_member(o, 0);
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_STRING);
+    fail_unless(pa_streq(pa_json_object_get_string(v), "a member"));
+    v = pa_json_object_get_array_member(o, 1);
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_DOUBLE);
+    fail_unless(IS_EQUAL(pa_json_object_get_double(v), 1234.5));
+    v = pa_json_object_get_array_member(o, 2);
+    fail_unless(v != NULL);
+    fail_unless(pa_json_object_get_type(v) == PA_JSON_TYPE_OBJECT);
+    v2 =pa_json_object_get_object_member(v, "another");
+    fail_unless(v2 != NULL);
+    fail_unless(pa_json_object_get_type(v2) == PA_JSON_TYPE_BOOL);
+    fail_unless(pa_json_object_get_bool(v2) == true);
+
+    pa_json_object_unref(o);
+}
+END_TEST
+
+int main(int argc, char *argv[]) {
+    int failed = 0;
+    Suite *s;
+    TCase *tc;
+    SRunner *sr;
+
+    s = suite_create("JSON");
+    tc = tcase_create("json");
+    tcase_add_test(tc, string_test);
+    tcase_add_test(tc, int_test);
+    tcase_add_test(tc, double_test);
+    tcase_add_test(tc, null_test);
+    tcase_add_test(tc, bool_test);
+    tcase_add_test(tc, object_test);
+    tcase_add_test(tc, array_test);
+    suite_add_tcase(s, tc);
+
+    sr = srunner_create(s);
+    srunner_run_all(sr, CK_NORMAL);
+    failed = srunner_ntests_failed(sr);
+    srunner_free(sr);
+
+    return (failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}