Add json_loadb() for decoding possibly non null-terminated strings

Thanks to Jonathan Landis for the initial patch.

test/.gitignore

@@ -6,6 +6,7 @@ suites/api/test_cpp
 suites/api/test_dump
 suites/api/test_equal
 suites/api/test_load
+suites/api/test_loadb
 suites/api/test_memory_funcs
 suites/api/test_number
 suites/api/test_object

test/suites/api/Makefile.am

@@ -6,6 +6,7 @@ check_PROGRAMS = \
 	test_dump \
 	test_equal \
 	test_load \
+	test_loadb \
 	test_memory_funcs \
 	test_number \
 	test_object \
@@ -17,6 +18,7 @@ test_array_SOURCES = test_array.c util.h
 test_copy_SOURCES = test_copy.c util.h
 test_dump_SOURCES = test_dump.c util.h
 test_load_SOURCES = test_load.c util.h
+test_loadb_SOURCES = test_loadb.c util.h
 test_memory_funcs_SOURCES = test_memory_funcs.c util.h
 test_number_SOURCES = test_number.c util.h
 test_object_SOURCES = test_object.c util.h

test/suites/api/check-exports

@@ -50,6 +50,7 @@ json_dump_file
 json_loads
 json_loadf
 json_load_file
+json_loadb
 json_equal
 json_copy
 json_deep_copy

test/suites/api/test_loadb.c

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2009-2011 Petri Lehtinen <petri@digip.org>
+ *
+ * Jansson is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#include <jansson.h>
+#include <string.h>
+#include "util.h"
+
+int main()
+{
+    json_t *json;
+    json_error_t error;
+    const char str[] = "[\"A\", {\"B\": \"C\"}, 1, 2, 3]garbage";
+    size_t len = strlen(str) - strlen("garbage");
+
+    json = json_loadb(str, len, 0, &error);
+    if(!json) {
+        fail("json_loadb failed on a valid JSON buffer");
+    }
+    json_decref(json);
+
+    json = json_loadb(str, len - 1, 0, &error);
+    if (json) {
+        json_decref(json);
+        fail("json_loadb should have failed on an incomplete buffer, but it didn't");
+    }
+    if(error.line != 1) {
+        fail("json_loadb returned an invalid line number on fail");
+    }
+    if(strcmp(error.text, "']' expected near end of file") != 0) {
+        fail("json_loadb returned an invalid error message for an unclosed top-level array");
+    }
+
+    return 0;
+}