Abstracted XML parser library and switched to autotools building.

expat is still the default parser, but libxml2 can also be used
via an option to the configure script.  New parsers can easily be
added by implementing a parser_foo.c that uses the interface defined
in parser.h.

tests/check_parser.c

@@ -0,0 +1,93 @@
+/* check_parser.h
+** strophe XMPP client library -- parser tests
+**
+** Copyright (C) 2005-2009 Stanziq, Inc. All rights reserved.
+**
+**  This software is provided AS-IS with no warranty, either express or
+**  implied.
+**
+**  This software is distributed under license and may not be copied,
+**  modified or distributed except as expressly authorized under the
+**  terms of the license contained in the file LICENSE.txt in this
+**  distribution.
+*/
+
+#include <stdlib.h>
+
+#include <check.h>
+
+#include <strophe.h>
+#include "parser.h"
+
+#include "test.h"
+
+START_TEST(create_destroy)
+{
+    xmpp_ctx_t *ctx;
+    parser_t *parser;
+
+    ctx = xmpp_ctx_new(NULL, NULL);
+    parser = parser_new(ctx, NULL, NULL, NULL, NULL);
+    fail_unless(parser != NULL, "Parser creation failed.");
+    parser_free(parser);
+    xmpp_ctx_free(ctx);
+}
+END_TEST
+
+int cbtest_got_start = 0;
+void cbtest_handle_start(char *name, char **attrs, void *userdata)
+{
+    if (strcmp(name, "stream:stream") == 0)
+        cbtest_got_start = 1;
+}
+
+int cbtest_got_end = 0;
+void cbtest_handle_end(char *name, void *userdata)
+{
+    if (strcmp(name, "stream:stream") == 0)
+        cbtest_got_end = 1;
+}
+
+int cbtest_got_stanza = 0;
+void cbtest_handle_stanza(xmpp_stanza_t *stanza, void *userdata)
+{
+    if (strcmp(xmpp_stanza_get_name(stanza), "message") == 0)
+        cbtest_got_stanza = 1;
+}
+
+START_TEST(callbacks)
+{
+    xmpp_ctx_t *ctx;
+    parser_t *parser;
+    int ret;
+
+    ctx = xmpp_ctx_new(NULL, NULL);
+    parser = parser_new(ctx, 
+                        cbtest_handle_start, 
+                        cbtest_handle_end,
+                        cbtest_handle_stanza, NULL);
+
+    ret = parser_feed(parser, "<stream:stream>", 15);
+    ret = parser_feed(parser, "<message/>", 10);
+    parser_feed(parser, "</stream:stream>", 16);
+
+    fail_unless(cbtest_got_start == 1);
+    fail_unless(cbtest_got_end == 1);
+    fail_unless(cbtest_got_stanza == 1);
+
+    parser_free(parser);
+    xmpp_ctx_free(ctx);
+}
+END_TEST
+
+Suite *parser_suite(void)
+{
+    Suite *s = suite_create("Parser");
+    TCase *tc_core = tcase_create("Core");
+    tcase_add_test(tc_core, create_destroy);
+    tcase_add_test(tc_core, callbacks);
+    suite_add_tcase(s, tc_core);
+    return s;
+}
+
+TEST_MAIN