2 * i3bar - an xcb-based status- and ws-bar for i3
4 * © 2010-2011 Axel Wagner and contributors
6 * See file LICNSE for license information
8 * src/outputs.c: Maintaining the output-list
16 #include <yajl/yajl_parse.h>
17 #include <yajl/yajl_version.h>
21 /* A datatype to pass through the callbacks to save the state */
22 struct outputs_json_params {
23 struct outputs_head *outputs;
24 i3_output *outputs_walk;
31 * Parse a null-value (current_workspace)
34 static int outputs_null_cb(void *params_) {
35 struct outputs_json_params *params = (struct outputs_json_params*) params_;
37 FREE(params->cur_key);
43 * Parse a booleant-value (active)
46 static int outputs_boolean_cb(void *params_, bool val) {
47 struct outputs_json_params *params = (struct outputs_json_params*) params_;
49 if (strcmp(params->cur_key, "active")) {
53 params->outputs_walk->active = val;
55 FREE(params->cur_key);
61 * Parse an integer (current_workspace or the rect)
65 static int outputs_integer_cb(void *params_, long long val) {
67 static int outputs_integer_cb(void *params_, long val) {
69 struct outputs_json_params *params = (struct outputs_json_params*) params_;
71 if (!strcmp(params->cur_key, "current_workspace")) {
72 params->outputs_walk->ws = (int) val;
73 FREE(params->cur_key);
77 if (!strcmp(params->cur_key, "x")) {
78 params->outputs_walk->rect.x = (int) val;
79 FREE(params->cur_key);
83 if (!strcmp(params->cur_key, "y")) {
84 params->outputs_walk->rect.y = (int) val;
85 FREE(params->cur_key);
89 if (!strcmp(params->cur_key, "width")) {
90 params->outputs_walk->rect.w = (int) val;
91 FREE(params->cur_key);
95 if (!strcmp(params->cur_key, "height")) {
96 params->outputs_walk->rect.h = (int) val;
97 FREE(params->cur_key);
105 * Parse a string (name)
109 static int outputs_string_cb(void *params_, const unsigned char *val, size_t len) {
111 static int outputs_string_cb(void *params_, const unsigned char *val, unsigned int len) {
113 struct outputs_json_params *params = (struct outputs_json_params*) params_;
115 if (!strcmp(params->cur_key, "current_workspace")) {
116 char *copy = malloc(sizeof(const unsigned char) * (len + 1));
117 strncpy(copy, (const char*) val, len);
122 long parsed_num = strtol(copy, &end, 10);
124 (end && *end == '\0'))
125 params->outputs_walk->ws = parsed_num;
127 FREE(params->cur_key);
131 if (strcmp(params->cur_key, "name")) {
135 char *name = malloc(sizeof(const unsigned char) * (len + 1));
136 strncpy(name, (const char*) val, len);
139 params->outputs_walk->name = name;
141 FREE(params->cur_key);
147 * We hit the start of a json-map (rect or a new output)
150 static int outputs_start_map_cb(void *params_) {
151 struct outputs_json_params *params = (struct outputs_json_params*) params_;
152 i3_output *new_output = NULL;
154 if (params->cur_key == NULL) {
155 new_output = malloc(sizeof(i3_output));
156 new_output->name = NULL;
158 memset(&new_output->rect, 0, sizeof(rect));
159 new_output->bar = XCB_NONE;
161 new_output->workspaces = malloc(sizeof(struct ws_head));
162 TAILQ_INIT(new_output->workspaces);
164 params->outputs_walk = new_output;
173 * We hit the end of a map (rect or a new output)
176 static int outputs_end_map_cb(void *params_) {
177 struct outputs_json_params *params = (struct outputs_json_params*) params_;
178 /* FIXME: What is at the end of a rect? */
180 i3_output *target = get_output_by_name(params->outputs_walk->name);
182 if (target == NULL) {
183 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
185 target->active = params->outputs_walk->active;
186 target->ws = params->outputs_walk->ws;
187 target->rect = params->outputs_walk->rect;
195 * Essentially we just save it in the parsing-state
199 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
201 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, unsigned keyLen) {
203 struct outputs_json_params *params = (struct outputs_json_params*) params_;
204 FREE(params->cur_key);
206 params->cur_key = malloc(sizeof(unsigned char) * (keyLen + 1));
207 strncpy(params->cur_key, (const char*) keyVal, keyLen);
208 params->cur_key[keyLen] = '\0';
213 /* A datastructure to pass all these callbacks to yajl */
214 yajl_callbacks outputs_callbacks = {
221 &outputs_start_map_cb,
229 * Initiate the output-list
232 void init_outputs() {
233 outputs = malloc(sizeof(struct outputs_head));
238 * Start parsing the received json-string
241 void parse_outputs_json(char *json) {
242 struct outputs_json_params params;
244 params.outputs_walk = NULL;
245 params.cur_key = NULL;
251 yajl_parser_config parse_conf = { 0, 0 };
253 handle = yajl_alloc(&outputs_callbacks, &parse_conf, NULL, (void*) ¶ms);
255 handle = yajl_alloc(&outputs_callbacks, NULL, (void*) ¶ms);
258 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
260 /* FIXME: Propper errorhandling for JSON-parsing */
264 case yajl_status_client_canceled:
266 case yajl_status_insufficient_data:
268 case yajl_status_error:
269 ELOG("Could not parse outputs-reply!\n");
278 * Returns the output with the given name
281 i3_output *get_output_by_name(char *name) {
286 SLIST_FOREACH(walk, outputs, slist) {
287 if (!strcmp(walk->name, name)) {