2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010-2011 Axel Wagner and contributors (see also: LICENSE)
7 * outputs.c: Maintaining the output-list
15 #include <yajl/yajl_parse.h>
16 #include <yajl/yajl_version.h>
20 /* A datatype to pass through the callbacks to save the state */
21 struct outputs_json_params {
22 struct outputs_head *outputs;
23 i3_output *outputs_walk;
30 * Parse a null-value (current_workspace)
33 static int outputs_null_cb(void *params_) {
34 struct outputs_json_params *params = (struct outputs_json_params*) params_;
36 FREE(params->cur_key);
42 * Parse a boolean value (active)
45 static int outputs_boolean_cb(void *params_, int val) {
46 struct outputs_json_params *params = (struct outputs_json_params*) params_;
48 if (strcmp(params->cur_key, "active")) {
52 params->outputs_walk->active = val;
54 FREE(params->cur_key);
60 * Parse an integer (current_workspace or the rect)
64 static int outputs_integer_cb(void *params_, long long val) {
66 static int outputs_integer_cb(void *params_, long val) {
68 struct outputs_json_params *params = (struct outputs_json_params*) params_;
70 if (!strcmp(params->cur_key, "current_workspace")) {
71 params->outputs_walk->ws = (int) val;
72 FREE(params->cur_key);
76 if (!strcmp(params->cur_key, "x")) {
77 params->outputs_walk->rect.x = (int) val;
78 FREE(params->cur_key);
82 if (!strcmp(params->cur_key, "y")) {
83 params->outputs_walk->rect.y = (int) val;
84 FREE(params->cur_key);
88 if (!strcmp(params->cur_key, "width")) {
89 params->outputs_walk->rect.w = (int) val;
90 FREE(params->cur_key);
94 if (!strcmp(params->cur_key, "height")) {
95 params->outputs_walk->rect.h = (int) val;
96 FREE(params->cur_key);
104 * Parse a string (name)
108 static int outputs_string_cb(void *params_, const unsigned char *val, size_t len) {
110 static int outputs_string_cb(void *params_, const unsigned char *val, unsigned int len) {
112 struct outputs_json_params *params = (struct outputs_json_params*) params_;
114 if (!strcmp(params->cur_key, "current_workspace")) {
115 char *copy = smalloc(sizeof(const unsigned char) * (len + 1));
116 strncpy(copy, (const char*) val, len);
121 long parsed_num = strtol(copy, &end, 10);
123 (end && *end == '\0'))
124 params->outputs_walk->ws = parsed_num;
126 FREE(params->cur_key);
130 if (strcmp(params->cur_key, "name")) {
134 char *name = smalloc(sizeof(const unsigned char) * (len + 1));
135 strncpy(name, (const char*) val, len);
138 params->outputs_walk->name = name;
140 FREE(params->cur_key);
146 * We hit the start of a json-map (rect or a new output)
149 static int outputs_start_map_cb(void *params_) {
150 struct outputs_json_params *params = (struct outputs_json_params*) params_;
151 i3_output *new_output = NULL;
153 if (params->cur_key == NULL) {
154 new_output = smalloc(sizeof(i3_output));
155 new_output->name = NULL;
157 memset(&new_output->rect, 0, sizeof(rect));
158 new_output->bar = XCB_NONE;
160 new_output->workspaces = smalloc(sizeof(struct ws_head));
161 TAILQ_INIT(new_output->workspaces);
163 new_output->trayclients = smalloc(sizeof(struct tc_head));
164 TAILQ_INIT(new_output->trayclients);
166 params->outputs_walk = new_output;
171 if (!strcmp(params->cur_key, "rect")) {
172 params->in_rect = true;
179 * We hit the end of a map (rect or a new output)
182 static int outputs_end_map_cb(void *params_) {
183 struct outputs_json_params *params = (struct outputs_json_params*) params_;
184 if (params->in_rect) {
185 params->in_rect = false;
186 /* Ignore the end of a rect */
190 /* See if we actually handle that output */
191 if (config.num_outputs > 0) {
192 bool handle_output = false;
193 for (int c = 0; c < config.num_outputs; c++) {
194 if (strcasecmp(params->outputs_walk->name, config.outputs[c]) != 0)
197 handle_output = true;
200 if (!handle_output) {
201 DLOG("Ignoring output \"%s\", not configured to handle it.\n",
202 params->outputs_walk->name);
203 FREE(params->outputs_walk->name);
204 FREE(params->outputs_walk->workspaces);
205 FREE(params->outputs_walk->trayclients);
206 FREE(params->outputs_walk);
207 FREE(params->cur_key);
212 i3_output *target = get_output_by_name(params->outputs_walk->name);
214 if (target == NULL) {
215 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
217 target->active = params->outputs_walk->active;
218 target->ws = params->outputs_walk->ws;
219 target->rect = params->outputs_walk->rect;
227 * Essentially we just save it in the parsing-state
231 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
233 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, unsigned keyLen) {
235 struct outputs_json_params *params = (struct outputs_json_params*) params_;
236 FREE(params->cur_key);
238 params->cur_key = smalloc(sizeof(unsigned char) * (keyLen + 1));
239 strncpy(params->cur_key, (const char*) keyVal, keyLen);
240 params->cur_key[keyLen] = '\0';
245 /* A datastructure to pass all these callbacks to yajl */
246 yajl_callbacks outputs_callbacks = {
253 &outputs_start_map_cb,
261 * Initiate the output-list
264 void init_outputs() {
265 outputs = smalloc(sizeof(struct outputs_head));
270 * Start parsing the received json-string
273 void parse_outputs_json(char *json) {
274 struct outputs_json_params params;
276 params.outputs_walk = NULL;
277 params.cur_key = NULL;
279 params.in_rect = false;
284 yajl_parser_config parse_conf = { 0, 0 };
286 handle = yajl_alloc(&outputs_callbacks, &parse_conf, NULL, (void*) ¶ms);
288 handle = yajl_alloc(&outputs_callbacks, NULL, (void*) ¶ms);
291 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
293 /* FIXME: Propper errorhandling for JSON-parsing */
297 case yajl_status_client_canceled:
299 case yajl_status_insufficient_data:
301 case yajl_status_error:
302 ELOG("Could not parse outputs-reply!\n");
311 * Returns the output with the given name
314 i3_output *get_output_by_name(char *name) {
319 SLIST_FOREACH(walk, outputs, slist) {
320 if (!strcmp(walk->name, name)) {