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ea848032c2
This is a small, helpful api that helps for finding error locations in xml files, along the same lines as g_markup_parse_context_get_position.
352 lines
9.1 KiB
C
352 lines
9.1 KiB
C
#undef G_DISABLE_ASSERT
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#undef G_LOG_DOMAIN
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#include <locale.h>
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#include <string.h>
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#include <stdio.h>
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#include <glib.h>
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static int depth = 0;
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static GString *string;
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static void
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indent (int extra)
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{
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int i = 0;
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while (i < depth)
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{
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g_string_append (string, " ");
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++i;
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}
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}
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static void
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start_element_handler (GMarkupParseContext *context,
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const gchar *element_name,
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const gchar **attribute_names,
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const gchar **attribute_values,
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gpointer user_data,
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GError **error)
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{
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int i;
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indent (0);
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g_string_append_printf (string, "ELEMENT '%s'\n", element_name);
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i = 0;
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while (attribute_names[i] != NULL)
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{
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indent (1);
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g_string_append_printf (string, "%s=\"%s\"\n",
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attribute_names[i],
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attribute_values[i]);
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++i;
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}
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++depth;
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}
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static void
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end_element_handler (GMarkupParseContext *context,
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const gchar *element_name,
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gpointer user_data,
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GError **error)
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{
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--depth;
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indent (0);
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g_string_append_printf (string, "END '%s'\n", element_name);
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}
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static void
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text_handler (GMarkupParseContext *context,
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const gchar *text,
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gsize text_len,
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gpointer user_data,
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GError **error)
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{
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indent (0);
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g_string_append_printf (string, "TEXT '%.*s'\n", (int)text_len, text);
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}
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static void
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passthrough_handler (GMarkupParseContext *context,
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const gchar *passthrough_text,
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gsize text_len,
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gpointer user_data,
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GError **error)
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{
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indent (0);
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g_string_append_printf (string, "PASS '%.*s'\n", (int)text_len, passthrough_text);
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}
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static void
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error_handler (GMarkupParseContext *context,
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GError *error,
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gpointer user_data)
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{
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g_string_append_printf (string, "ERROR %s\n", error->message);
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}
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static const GMarkupParser parser = {
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start_element_handler,
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end_element_handler,
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text_handler,
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passthrough_handler,
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error_handler
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};
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static const GMarkupParser silent_parser = {
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NULL,
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NULL,
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NULL,
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NULL,
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error_handler
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};
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static int
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test_in_chunks (const gchar *contents,
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gint length,
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gint chunk_size,
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GMarkupParseFlags flags)
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{
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GMarkupParseContext *context;
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int i = 0;
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context = g_markup_parse_context_new (&silent_parser, flags, NULL, NULL);
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while (i < length)
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{
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int this_chunk = MIN (length - i, chunk_size);
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if (!g_markup_parse_context_parse (context,
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contents + i,
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this_chunk,
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NULL))
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{
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g_markup_parse_context_free (context);
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return 1;
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}
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i += this_chunk;
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}
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if (!g_markup_parse_context_end_parse (context, NULL))
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{
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g_markup_parse_context_free (context);
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return 1;
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}
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g_markup_parse_context_free (context);
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return 0;
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}
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/* Load the given @filename and parse it multiple times with different chunking
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* and length handling. All results should be equal. %TRUE is returned if the
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* file was parsed successfully on every attempt; %FALSE if it failed to parse
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* on every attempt. The test aborts if some attempts succeed and some fail. */
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static gboolean
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test_file (const gchar *filename,
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GMarkupParseFlags flags)
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{
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gchar *contents = NULL, *contents_unterminated = NULL;
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gsize length_bytes;
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GError *local_error = NULL;
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GMarkupParseContext *context;
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gint line, col;
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gsize offset;
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guint n_failures = 0;
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guint n_tests = 0;
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const gsize chunk_sizes_bytes[] = { 1, 2, 5, 12, 1024 };
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gsize i;
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GString *first_string = NULL;
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g_file_get_contents (filename, &contents, &length_bytes, &local_error);
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g_assert_no_error (local_error);
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/* Make a copy of the contents with no trailing nul. */
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contents_unterminated = g_malloc (length_bytes);
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if (contents_unterminated != NULL)
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memcpy (contents_unterminated, contents, length_bytes);
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/* Test with nul termination. */
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context = g_markup_parse_context_new (&parser, flags, NULL, NULL);
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g_assert (g_markup_parse_context_get_user_data (context) == NULL);
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g_markup_parse_context_get_position (context, &line, &col);
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g_assert_cmpint (line, ==, 1);
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g_assert_cmpint (col, ==, 1);
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offset = g_markup_parse_context_get_offset (context);
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g_assert_cmpint (offset, ==, 0);
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if (!g_markup_parse_context_parse (context, contents, -1, NULL) ||
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!g_markup_parse_context_end_parse (context, NULL))
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n_failures++;
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n_tests++;
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g_markup_parse_context_free (context);
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/* FIXME: Swap out the error string so we only return one copy of it, not
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* @n_tests copies. This should be fixed properly by eliminating the global
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* state in this file. */
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first_string = g_steal_pointer (&string);
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string = g_string_new ("");
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/* With the length specified explicitly and a nul terminator present (since
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* g_file_get_contents() always adds one). */
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if (test_in_chunks (contents, length_bytes, length_bytes, flags) != 0)
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n_failures++;
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n_tests++;
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/* With the length specified explicitly and no nul terminator present. */
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if (test_in_chunks (contents_unterminated, length_bytes, length_bytes, flags) != 0)
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n_failures++;
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n_tests++;
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/* In various sized chunks. */
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for (i = 0; i < G_N_ELEMENTS (chunk_sizes_bytes); i++)
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{
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if (test_in_chunks (contents, length_bytes, chunk_sizes_bytes[i], flags) != 0)
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n_failures++;
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n_tests++;
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}
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g_free (contents);
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g_free (contents_unterminated);
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/* FIXME: Restore the error string. */
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g_string_free (string, TRUE);
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string = g_steal_pointer (&first_string);
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/* We expect the file to either always be parsed successfully, or never be
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* parsed successfully. There’s a bug in GMarkup if it sometimes parses
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* successfully depending on how you chunk or terminate the input. */
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if (n_failures > 0)
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g_assert_cmpint (n_failures, ==, n_tests);
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return (n_failures == 0);
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}
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static gchar *
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get_expected_filename (const gchar *filename,
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GMarkupParseFlags flags)
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{
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gchar *f, *p, *expected;
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f = g_strdup (filename);
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p = strstr (f, ".gmarkup");
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if (p)
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*p = 0;
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if (flags == 0)
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expected = g_strconcat (f, ".expected", NULL);
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else if (flags == G_MARKUP_TREAT_CDATA_AS_TEXT)
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expected = g_strconcat (f, ".cdata-as-text", NULL);
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else
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g_assert_not_reached ();
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g_free (f);
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return expected;
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}
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static void
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test_parse (gconstpointer d)
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{
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const gchar *filename = d;
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gchar *expected_file;
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gchar *expected;
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gboolean valid_input;
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GError *error = NULL;
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gboolean res;
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valid_input = strstr (filename, "valid") != NULL;
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expected_file = get_expected_filename (filename, 0);
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depth = 0;
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string = g_string_sized_new (0);
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res = test_file (filename, 0);
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g_assert_cmpint (res, ==, valid_input);
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g_file_get_contents (expected_file, &expected, NULL, &error);
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g_assert_no_error (error);
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g_assert_cmpstr (string->str, ==, expected);
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g_free (expected);
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g_string_free (string, TRUE);
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g_free (expected_file);
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expected_file = get_expected_filename (filename, G_MARKUP_TREAT_CDATA_AS_TEXT);
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if (g_file_test (expected_file, G_FILE_TEST_EXISTS))
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{
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depth = 0;
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string = g_string_sized_new (0);
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res = test_file (filename, G_MARKUP_TREAT_CDATA_AS_TEXT);
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g_assert_cmpint (res, ==, valid_input);
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g_file_get_contents (expected_file, &expected, NULL, &error);
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g_assert_no_error (error);
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g_assert_cmpstr (string->str, ==, expected);
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g_free (expected);
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g_string_free (string, TRUE);
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}
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g_free (expected_file);
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}
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int
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main (int argc, char *argv[])
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{
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GDir *dir;
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GError *error;
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const gchar *name;
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gchar *path;
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g_setenv ("LC_ALL", "C", TRUE);
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setlocale (LC_ALL, "");
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g_test_init (&argc, &argv, NULL);
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/* allow to easily generate expected output for new test cases */
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if (argc > 1)
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{
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gint arg = 1;
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GMarkupParseFlags flags = G_MARKUP_DEFAULT_FLAGS;
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if (strcmp (argv[1], "--cdata-as-text") == 0)
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{
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flags = G_MARKUP_TREAT_CDATA_AS_TEXT;
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arg = 2;
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}
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string = g_string_sized_new (0);
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test_file (argv[arg], flags);
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g_print ("%s", string->str);
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return 0;
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}
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error = NULL;
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path = g_test_build_filename (G_TEST_DIST, "markups", NULL);
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dir = g_dir_open (path, 0, &error);
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g_free (path);
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g_assert_no_error (error);
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while ((name = g_dir_read_name (dir)) != NULL)
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{
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if (!strstr (name, "gmarkup"))
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continue;
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path = g_strdup_printf ("/markup/parse/%s", name);
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g_test_add_data_func_full (path, g_test_build_filename (G_TEST_DIST, "markups", name, NULL),
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test_parse, g_free);
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g_free (path);
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}
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g_dir_close (dir);
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return g_test_run ();
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}
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