2 * i3bar - an xcb-based status- and ws-bar for i3
4 * © 2010 Axel Wagner and contributors
6 * See file LICNSE for license information
8 * src/outputs.c: Maintaining the output-list
15 #include <yajl/yajl_parse.h>
19 /* A datatype to pass through the callbacks to save the state */
20 struct outputs_json_params {
21 struct outputs_head *outputs;
22 i3_output *outputs_walk;
29 * Parse a null-value (current_workspace)
32 static int outputs_null_cb(void *params_) {
33 struct outputs_json_params *params = (struct outputs_json_params*) params_;
35 FREE(params->cur_key);
41 * Parse a booleant-value (active)
44 static int outputs_boolean_cb(void *params_, bool val) {
45 struct outputs_json_params *params = (struct outputs_json_params*) params_;
47 if (strcmp(params->cur_key, "active")) {
51 params->outputs_walk->active = val;
53 FREE(params->cur_key);
59 * Parse an integer (current_workspace or the rect)
62 static int outputs_integer_cb(void *params_, long val) {
63 struct outputs_json_params *params = (struct outputs_json_params*) params_;
65 if (!strcmp(params->cur_key, "current_workspace")) {
66 params->outputs_walk->ws = (int) val;
67 FREE(params->cur_key);
71 if (!strcmp(params->cur_key, "x")) {
72 params->outputs_walk->rect.x = (int) val;
73 FREE(params->cur_key);
77 if (!strcmp(params->cur_key, "y")) {
78 params->outputs_walk->rect.y = (int) val;
79 FREE(params->cur_key);
83 if (!strcmp(params->cur_key, "width")) {
84 params->outputs_walk->rect.w = (int) val;
85 FREE(params->cur_key);
89 if (!strcmp(params->cur_key, "height")) {
90 params->outputs_walk->rect.h = (int) val;
91 FREE(params->cur_key);
99 * Parse a string (name)
102 static int outputs_string_cb(void *params_, const unsigned char *val, unsigned int len) {
103 struct outputs_json_params *params = (struct outputs_json_params*) params_;
105 if (strcmp(params->cur_key, "name")) {
109 char *name = malloc(sizeof(const unsigned char) * (len + 1));
110 strncpy(name, (const char*) val, len);
113 params->outputs_walk->name = name;
115 FREE(params->cur_key);
121 * We hit the start of a json-map (rect or a new output)
124 static int outputs_start_map_cb(void *params_) {
125 struct outputs_json_params *params = (struct outputs_json_params*) params_;
126 i3_output *new_output = NULL;
128 if (params->cur_key == NULL) {
129 new_output = malloc(sizeof(i3_output));
130 new_output->name = NULL;
132 memset(&new_output->rect, 0, sizeof(rect));
133 new_output->bar = XCB_NONE;
135 new_output->workspaces = malloc(sizeof(struct ws_head));
136 TAILQ_INIT(new_output->workspaces);
138 params->outputs_walk = new_output;
147 * We hit the end of a map (rect or a new output)
150 static int outputs_end_map_cb(void *params_) {
151 struct outputs_json_params *params = (struct outputs_json_params*) params_;
152 /* FIXME: What is at the end of a rect? */
154 i3_output *target = get_output_by_name(params->outputs_walk->name);
156 if (target == NULL) {
157 SLIST_INSERT_HEAD(outputs, params->outputs_walk, slist);
159 target->active = params->outputs_walk->active;
160 target->ws = params->outputs_walk->ws;
161 target->rect = params->outputs_walk->rect;
169 * Essentially we just save it in the parsing-state
172 static int outputs_map_key_cb(void *params_, const unsigned char *keyVal, unsigned int keyLen) {
173 struct outputs_json_params *params = (struct outputs_json_params*) params_;
174 FREE(params->cur_key);
176 params->cur_key = malloc(sizeof(unsigned char) * (keyLen + 1));
177 strncpy(params->cur_key, (const char*) keyVal, keyLen);
178 params->cur_key[keyLen] = '\0';
183 /* A datastructure to pass all these callbacks to yajl */
184 yajl_callbacks outputs_callbacks = {
191 &outputs_start_map_cb,
199 * Initiate the output-list
202 void init_outputs() {
203 outputs = malloc(sizeof(struct outputs_head));
208 * Start parsing the received json-string
211 void parse_outputs_json(char *json) {
212 struct outputs_json_params params;
214 params.outputs_walk = NULL;
215 params.cur_key = NULL;
219 yajl_parser_config parse_conf = { 0, 0 };
222 handle = yajl_alloc(&outputs_callbacks, &parse_conf, NULL, (void*) ¶ms);
224 state = yajl_parse(handle, (const unsigned char*) json, strlen(json));
226 /* FIXME: Propper errorhandling for JSON-parsing */
230 case yajl_status_client_canceled:
231 case yajl_status_insufficient_data:
232 case yajl_status_error:
233 ELOG("Could not parse outputs-reply!\n");
242 * Returns the output with the given name
245 i3_output *get_output_by_name(char *name) {
250 SLIST_FOREACH(walk, outputs, slist) {
251 if (!strcmp(walk->name, name)) {