1 files changed, 68 insertions, 0 deletions
diff --git a/export_xml.c b/export_xml.c
new file mode 100644
index 0000000..f66381e
--- /dev/null
+++ b/export_xml.c
@@ -0,0 +1,68 @@
+#include <libxml/tree.h>
+#include <libxml/xmlsave.h>
+
+#include "export_xml.h"
+
+#if !defined(LIBXML_TREE_ENABLED)
+#error "libxml must be compiled with tree support"
+#endif
+
+
+int export_xml(struct channel_t *channel, struct user_t *users) {
+	/* Create document and set root node. */
+	xmlDocPtr doc = xmlNewDoc("1.0");
+	xmlNodePtr root_node = xmlNewNode(NULL, "channel");
+	xmlDocSetRootElement(doc, root_node);
+
+	/* Set the channel name. */
+	xmlNewChild(root_node, NULL, "name", channel->name);
+
+	/* Add lines. */
+	xmlNodePtr lines_node = xmlNewChild(root_node, NULL, "lines", NULL);
+	for(int h = 0; h < 24; h++) {
+		xmlNodePtr hour_node = xmlNewChild(lines_node, NULL, "hour", NULL);
+		for(int q = 0; q < 4; q++) {
+			char s[0xf];
+			sprintf(s, "%d", channel->hours[h*4 + q]);
+			xmlNewChild(hour_node, NULL, "quarter", s);
+		}
+	}
+
+	/* Add users. */
+	xmlNodePtr users_node = xmlNewChild(root_node, NULL, "users", NULL);
+	for(int u = 0; u < USERS_MAX; u++) {
+		struct user_t *user = &users[u];
+		/* Iterate while we have a user (nick is non-NULL). */
+		while(user && user->nick) {
+			char s[0xf];
+			xmlNodePtr user_node = xmlNewChild(users_node, NULL, "user", NULL);
+
+			xmlNewChild(user_node, NULL, "nick", user->nick);
+			sprintf(s, "%d", user->words);
+			xmlNewChild(user_node, NULL, "words", s);
+
+			/* Add lines for this user. */
+			xmlNodePtr lines_node = xmlNewChild(users_node, NULL, "lines", NULL);
+			for(int h = 0; h < 24; h++) {
+				xmlNodePtr hour_node = xmlNewChild(lines_node, NULL, "hour", NULL);
+				for(int q = 0; q < 4; q++) {
+					sprintf(s, "%d", user->lines[h*4 + q]);
+					xmlNewChild(hour_node, NULL, "quarter", s);
+				}
+			}
+			user = user->next;
+		}
+	}
+
+	xmlSaveCtxtPtr save_context = xmlSaveToFilename(channel->xmlpath, "UTF-8", 0);
+	if(!save_context) {
+		xmlErrorPtr error = xmlGetLastError();
+		fprintf(stderr, "Failed to save XML data: %s\n", (error ? error->message : "unknown error"));
+		xmlFreeDoc(doc);
+		return 0;
+	}
+	xmlSaveDoc(save_context, doc);
+	xmlSaveClose(save_context);
+	xmlFreeDoc(doc);
+	return 1;
+}