2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
6 * © 2010-2011 Axel Wagner and contributors
8 * See file LICNSE for license information
10 * src/outputs.c: Maintaining the output-list
18 #include <yajl/yajl_parse.h>
19 #include <yajl/yajl_version.h>
23 /* A datatype to pass through the callbacks to save the state */
24 struct outputs_json_params {
25 struct outputs_head *outputs;
26 i3_output *outputs_walk;
33 * Parse a null-value (current_workspace)
36 static int outputs_null_cb(void *params_) {
37 struct outputs_json_params *params = (struct outputs_json_params*) params_;
39 FREE(params->cur_key);
45 * Parse a boolean value (active)
48 static int outputs_boolean_cb(void *params_, int val) {
49 struct outputs_json_params *params = (struct outputs_json_params*) params_;
51 if (strcmp(params->cur_key, "active")) {
55 params->outputs_walk->active = val;
57 FREE(params->cur_key);
63 * Parse an integer (current_workspace or the rect)
67 static int outputs_integer_cb(void *params_, long long val) {
69 static int outputs_integer_cb(void *params_, long val) {
71 struct outputs_json_params *params = (struct outputs_json_params*) params_;
73 if (!strcmp(params->cur_key, "current_workspace")) {
74 params->outputs_walk->ws = (int) val;
75 FREE(params->cur_key);
79 if (!strcmp(params->cur_key, "x")) {
80 params->outputs_walk->rect.x = (int) val;
81 FREE(params->cur_key);
85 if (!strcmp(params->cur_key, "y")) {
86 params->outputs_walk->rect.y = (int) val;
87 FREE(params->cur_key);
91 if (!strcmp(params->cur_key, "width")) {
92 params->outputs_walk->rect.w = (int) val;
93 FREE(params->cur_key);
97 if (!strcmp(params->cur_key, "height")) {
98 params->outputs_walk->rect.h = (int) val;
99 FREE(params->cur_key);
107 * Parse a string (name)
111 static int outputs_string_cb(void *params_, const unsigned char *val, size_t len) {
113 static int outputs_string_cb(void *params_, const unsigned char *val, unsigned int len) {
115 struct outputs_json_params *params = (struct outputs_json_params*) params_;
117 if (!strcmp(params->cur_key, "current_workspace")) {
118 char *copy = smalloc(sizeof(const unsigned char) * (len + 1));
119 strncpy(copy, (const char*) val, len);
124 long parsed_num = strtol(copy, &end, 10);
126 (end && *end == '\0'))
127 params->outputs_walk->ws = parsed_num;
129 FREE(params->cur_key);
133 if (strcmp(params->cur_key, "name")) {
137 char *name = smalloc(sizeof(const unsigned char) * (len + 1));
138 strncpy(name, (const char*) val, len);
141 params->outputs_walk->name = name;
143 FREE(params->cur_key);
149 * We hit the start of a json-map (rect or a new output)
152 static int outputs_start_map_cb(void *params_) {
153 struct outputs_json_params *params = (struct outputs_json_params*) params_;
154 i3_output *new_output = NULL;
156 if (params->cur_key == NULL) {
157 new_output = smalloc(sizeof(i3_output));
158 new_output->name = NULL;
160 memset(&new_output->rect, 0, sizeof(rect));
161 new_output->bar = XCB_NONE;
163 new_output->workspaces = smalloc(sizeof(struct ws_head));
164 TAILQ_INIT(new_output->workspaces);
166 new_output->trayclients = smalloc(sizeof(struct tc_head));
167 TAILQ_INIT(new_output->trayclients);
169 params->outputs_walk = new_output;
174 if (!strcmp(params->cur_key, "rect")) {
175 params->in_rect = true;
182 * We hit the end of a map (rect or a new output)
185 static int outputs_end_map_cb(void *params_) {
186 struct outputs_json_params *params = (struct outputs_json_params*) params_;
187 if (params->in_rect) {
188 params->in_rect = false;
189 /* Ignore the end of a rect */
193 /* See if we actually handle that output */
194 if (config.num_outputs > 0) {
195 bool handle_output = false;
196 for (int c = 0; c < config.num_outputs; c++) {
197 if (strcasecmp(params->outputs_walk->name, config.outputs[c]) != 0)
200 handle_output = true;
203 if (!handle_output) {
204 DLOG("Ignoring output \"%s\", not configured to handle it.\n",
205 params->outputs_walk->name);
206 FREE(params->outputs_walk->name);
207 FREE(params->outputs_walk->workspaces);
208 FREE(params->outputs_walk->trayclients);
209 FREE(params->outputs_walk);
210 FREE(params->cur_key);
215 i3_output *target = get_output_by_name(params->outputs_walk->name);
217 if (target == NULL) {
218 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
220 target->active = params->outputs_walk->active;
221 target->ws = params->outputs_walk->ws;
222 target->rect = params->outputs_walk->rect;
230 * Essentially we just save it in the parsing-state
234 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
236 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, unsigned keyLen) {
238 struct outputs_json_params *params = (struct outputs_json_params*) params_;
239 FREE(params->cur_key);
241 params->cur_key = smalloc(sizeof(unsigned char) * (keyLen + 1));
242 strncpy(params->cur_key, (const char*) keyVal, keyLen);
243 params->cur_key[keyLen] = '\0';
248 /* A datastructure to pass all these callbacks to yajl */
249 yajl_callbacks outputs_callbacks = {
256 &outputs_start_map_cb,
264 * Initiate the output-list
267 void init_outputs() {
268 outputs = smalloc(sizeof(struct outputs_head));
273 * Start parsing the received json-string
276 void parse_outputs_json(char *json) {
277 struct outputs_json_params params;
279 params.outputs_walk = NULL;
280 params.cur_key = NULL;
282 params.in_rect = false;
287 yajl_parser_config parse_conf = { 0, 0 };
289 handle = yajl_alloc(&outputs_callbacks, &parse_conf, NULL, (void*) ¶ms);
291 handle = yajl_alloc(&outputs_callbacks, NULL, (void*) ¶ms);
294 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
296 /* FIXME: Propper errorhandling for JSON-parsing */
300 case yajl_status_client_canceled:
302 case yajl_status_insufficient_data:
304 case yajl_status_error:
305 ELOG("Could not parse outputs-reply!\n");
314 * Returns the output with the given name
317 i3_output *get_output_by_name(char *name) {
322 SLIST_FOREACH(walk, outputs, slist) {
323 if (!strcmp(walk->name, name)) {