Renamed parser -> stanza

src/server/stanza.c

@@ -0,0 +1,92 @@
+/*
+ * stanza.c
+ *
+ * Copyright (C) 2015 James Booth <boothj5@gmail.com>
+ *
+ * This file is part of Stabber.
+ *
+ * Stabber is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Stabber 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 General Public License
+ * along with Stabber.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <string.h>
+#include <expat.h>
+#include <glib.h>
+
+#include "server/stanzas.h"
+
+typedef struct parse_state_t {
+    int depth;
+    XMPPStanza *curr_stanza;
+} ParseState;
+
+static void
+start_element(void *data, const char *element, const char **attributes)
+{
+    ParseState *state = data;
+
+    XMPPStanza *stanza = stanza_new(element, attributes);
+    if (state->depth == 0) {
+        state->curr_stanza = stanza;
+        state->curr_stanza->parent = NULL;
+    } else {
+        stanza->parent = state->curr_stanza;
+        state->curr_stanza = stanza;
+    }
+
+    state->depth++;
+}
+
+static void
+end_element(void *data, const char *element)
+{
+    ParseState *state = data;
+
+    state->depth--;
+
+    if (state->depth > 0) {
+        stanza_add_child(state->curr_stanza->parent, state->curr_stanza);
+        state->curr_stanza = state->curr_stanza->parent;
+    }
+}
+
+static void
+handle_data(void *data, const char *content, int length)
+{
+    ParseState *state = data;
+
+    if (!state->curr_stanza->content) {
+        state->curr_stanza->content = g_string_new("");
+    }
+
+    g_string_append_len(state->curr_stanza->content, content, length);
+}
+
+XMPPStanza *
+parse_stanza(char *stanza_text)
+{
+    ParseState *state = malloc(sizeof(ParseState));
+    state->depth = 0;
+    state->curr_stanza = NULL;
+
+    XML_Parser parser = XML_ParserCreate(NULL);
+    XML_SetElementHandler(parser, start_element, end_element);
+    XML_SetCharacterDataHandler(parser, handle_data);
+    XML_SetUserData(parser, state);
+
+    XML_Parse(parser, stanza_text, strlen(stanza_text), 0);
+    XML_ParserFree(parser);
+
+    return state->curr_stanza;
+}