Read rc.xml and begin parsing

src/config/rcxml.c

@@ -0,0 +1,174 @@
+#define _POSIX_C_SOURCE 200112L
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "rcxml.h"
+
+static bool in_keybind = false;
+static bool is_attribute = false;
+static bool verbose = false;
+
+static void rstrip(char *buf, const char *pattern)
+{
+	char *p = strstr(buf, pattern);
+	if (!p)
+		return;
+	*p = '\0';
+}
+
+static void fill_keybind(xmlNode *n, char *nodename, char *content)
+{
+	rstrip(nodename, ".keybind.keyboard");
+	if (!strcmp(nodename, "name.action")) {
+		; /* TODO: populate keybind with stuff */
+	}
+}
+
+static bool get_bool(const char *s)
+{
+	if (!s)
+		return false;
+	if (!strcasecmp(s, "yes"))
+		return true;
+	if (!strcasecmp(s, "true"))
+		return true;
+	return false;
+}
+
+static void entry(xmlNode *node, char *nodename, char *content)
+{
+	if (!nodename)
+		return;
+	rstrip(nodename, ".openbox_config");
+	if (verbose) {
+		if (is_attribute)
+			printf("@");
+		printf("%s: %s\n", nodename, content);
+	}
+	if (!content)
+		return;
+	if (in_keybind)
+		fill_keybind(node, nodename, content);
+	if (!strcmp(nodename, "csd.wlroots"))
+		rc.client_side_decorations = get_bool(content);
+}
+
+static void keybind_begin(void)
+{
+	/* TODO: xcalloc struct keybind */
+	in_keybind = true;
+}
+
+static void keybind_end(void)
+{
+	in_keybind = false;
+	/* TODO: wl_list_add keybind */
+}
+
+static char *nodename(xmlNode *node, char *buf, int len)
+{
+	if (!node || !node->name)
+		return NULL;
+
+	/* Ignore superflous 'text.' in node name */
+	if (node->parent && !strcmp((char *)node->name, "text"))
+		node = node->parent;
+
+	buf += len;
+	*--buf = 0;
+	len--;
+
+	char *p = buf;
+	p[--len] = 0;
+	for (;;) {
+		const char *name = (char *)node->name;
+		char c;
+		while ((c = *name++) != 0) {
+			*p++ = tolower(c);
+			if (!--len)
+				return buf;
+		}
+		*p = 0;
+		node = node->parent;
+		if (!node || !node->name)
+			return buf;
+		*p++ = '.';
+		if (!--len)
+			return buf;
+	}
+}
+
+static void process_node(xmlNode *node)
+{
+	char *content;
+	static char buffer[256];
+	char *name;
+
+	content = (char *)node->content;
+	if (xmlIsBlankNode(node))
+		return;
+	name = nodename(node, buffer, sizeof(buffer));
+	entry(node, name, content);
+}
+
+static void xml_tree_walk(xmlNode *node);
+
+static void traverse(xmlNode *n)
+{
+	process_node(n);
+	is_attribute = true;
+	for (xmlAttr *attr = n->properties; attr; attr = attr->next)
+		xml_tree_walk(attr->children);
+	is_attribute = false;
+	xml_tree_walk(n->children);
+}
+
+static void xml_tree_walk(xmlNode *node)
+{
+	for (xmlNode *n = node; n && n->name; n = n->next) {
+		if (!strcasecmp((char *)n->name, "comment"))
+			continue;
+		if (!strcasecmp((char *)n->name, "keybind")) {
+			keybind_begin();
+			traverse(n);
+			keybind_end();
+			continue;
+		}
+		traverse(n);
+	}
+}
+
+static void parse_xml(const char *filename)
+{
+	xmlDoc *d = xmlReadFile(filename, NULL, 0);
+	if (!d) {
+		fprintf(stderr, "fatal: error reading file '%s'\n", filename);
+		exit(EXIT_FAILURE);
+	}
+	printf("info: reading config file '%s'\n", filename);
+	xml_tree_walk(xmlDocGetRootElement(d));
+	xmlFreeDoc(d);
+	xmlCleanupParser();
+}
+
+void rcxml_init(struct rcxml *rc)
+{
+	LIBXML_TEST_VERSION
+}
+
+void rcxml_read(const char *filename)
+{
+	parse_xml(filename);
+}
+
+void rcxml_set_verbose(void)
+{
+	verbose = true;
+}