13 typedef struct yy_buffer_state *YY_BUFFER_STATE;
14 extern int yylex(struct context *context);
15 extern int yyparse(void);
17 YY_BUFFER_STATE yy_scan_string(const char *);
19 static struct bindings_head *current_bindings;
20 static struct context *context;
22 /* We don’t need yydebug for now, as we got decent error messages using
23 * yyerror(). Should you ever want to extend the parser, it might be handy
24 * to just comment it in again, so it stays here. */
27 void yyerror(const char *error_message) {
29 ELOG("CONFIG: %s\n", error_message);
30 ELOG("CONFIG: in file \"%s\", line %d:\n",
31 context->filename, context->line_number);
32 ELOG("CONFIG: %s\n", context->line_copy);
34 for (int c = 1; c <= context->last_column; c++)
35 if (c >= context->first_column)
46 void parse_file(const char *f) {
47 SLIST_HEAD(variables_head, Variable) variables = SLIST_HEAD_INITIALIZER(&variables);
48 int fd, ret, read_bytes = 0;
52 char buffer[1026], key[512], value[512];
54 if ((fd = open(f, O_RDONLY)) == -1)
55 die("Could not open configuration file: %s\n", strerror(errno));
57 if (fstat(fd, &stbuf) == -1)
58 die("Could not fstat file: %s\n", strerror(errno));
60 buf = scalloc((stbuf.st_size + 1) * sizeof(char));
61 while (read_bytes < stbuf.st_size) {
62 if ((ret = read(fd, buf + read_bytes, (stbuf.st_size - read_bytes))) < 0)
63 die("Could not read(): %s\n", strerror(errno));
67 if (lseek(fd, 0, SEEK_SET) == (off_t)-1)
68 die("Could not lseek: %s\n", strerror(errno));
70 if ((fstr = fdopen(fd, "r")) == NULL)
71 die("Could not fdopen: %s\n", strerror(errno));
74 if (fgets(buffer, 1024, fstr) == NULL) {
77 die("Could not read configuration file\n");
80 /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
81 if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
82 key[0] == '#' || strlen(key) < 3)
85 if (strcasecmp(key, "set") == 0) {
87 die("Malformed variable assignment, name has to start with $\n");
89 /* get key/value for this variable */
90 char *v_key = value, *v_value;
91 if ((v_value = strstr(value, " ")) == NULL)
92 die("Malformed variable assignment, need a value\n");
96 struct Variable *new = scalloc(sizeof(struct Variable));
97 new->key = sstrdup(v_key);
98 new->value = sstrdup(v_value);
99 SLIST_INSERT_HEAD(&variables, new, variables);
100 DLOG("Got new variable %s = %s\n", v_key, v_value);
105 /* For every custom variable, see how often it occurs in the file and
106 * how much extra bytes it requires when replaced. */
107 struct Variable *current, *nearest;
109 /* We need to copy the buffer because we need to invalidate the
110 * variables (otherwise we will count them twice, which is bad when
111 * 'extra' is negative) */
112 char *bufcopy = sstrdup(buf);
113 SLIST_FOREACH(current, &variables, variables) {
114 int extra = (strlen(current->value) - strlen(current->key));
117 (next = strcasestr(bufcopy + (next - bufcopy), current->key)) != NULL;
118 next += strlen(current->key)) {
120 extra_bytes += extra;
125 /* Then, allocate a new buffer and copy the file over to the new one,
126 * but replace occurences of our variables */
127 char *walk = buf, *destwalk;
128 char *new = smalloc((stbuf.st_size + extra_bytes + 1) * sizeof(char));
130 while (walk < (buf + stbuf.st_size)) {
131 /* Find the next variable */
132 SLIST_FOREACH(current, &variables, variables)
133 current->next_match = strcasestr(walk, current->key);
135 int distance = stbuf.st_size;
136 SLIST_FOREACH(current, &variables, variables) {
137 if (current->next_match == NULL)
139 if ((current->next_match - walk) < distance) {
140 distance = (current->next_match - walk);
144 if (nearest == NULL) {
145 /* If there are no more variables, we just copy the rest */
146 strncpy(destwalk, walk, (buf + stbuf.st_size) - walk);
147 destwalk += (buf + stbuf.st_size) - walk;
151 /* Copy until the next variable, then copy its value */
152 strncpy(destwalk, walk, distance);
153 strncpy(destwalk + distance, nearest->value, strlen(nearest->value));
154 walk += distance + strlen(nearest->key);
155 destwalk += distance + strlen(nearest->value);
161 context = scalloc(sizeof(struct context));
162 context->filename = f;
164 if (yyparse() != 0) {
165 fprintf(stderr, "Could not parse configfile\n");
169 FREE(context->line_copy);
174 while (!SLIST_EMPTY(&variables)) {
175 current = SLIST_FIRST(&variables);
177 FREE(current->value);
178 SLIST_REMOVE_HEAD(&variables, variables);
187 %lex-param { struct context *context }
192 uint32_t *single_color;
193 struct Colortriple *color;
194 struct Assignment *assignment;
195 struct Binding *binding;
198 %token <number>NUMBER "<number>"
199 %token <string>WORD "<word>"
200 %token <string>STR "<string>"
201 %token <string>STR_NG "<string (non-greedy)>"
202 %token <string>HEX "<hex>"
203 %token <string>OUTPUT "<RandR output>"
206 %token TOKCOMMENT "<comment>"
207 %token TOKFONT "font"
208 %token TOKBINDSYM "bindsym"
209 %token MODIFIER "<modifier>"
210 %token TOKCONTROL "control"
211 %token TOKSHIFT "shift"
212 %token WHITESPACE "<whitespace>"
213 %token TOKFLOATING_MODIFIER "floating_modifier"
214 %token QUOTEDSTRING "<quoted string>"
215 %token TOKWORKSPACE "workspace"
216 %token TOKOUTPUT "output"
217 %token TOKASSIGN "assign"
219 %token TOKIPCSOCKET "ipc_socket"
220 %token TOKEXEC "exec"
221 %token TOKSINGLECOLOR
223 %token TOKARROW "→"
224 %token TOKMODE "mode"
225 %token TOKNEWCONTAINER "new_container"
226 %token TOKNEWWINDOW "new_window"
227 %token TOKFOCUSFOLLOWSMOUSE "focus_follows_mouse"
228 %token TOKWORKSPACEBAR "workspace_bar"
229 %token TOKCONTAINERMODE "default/stacking/tabbed"
230 %token TOKSTACKLIMIT "stack-limit"
235 | lines WHITESPACE line
246 | focus_follows_mouse
270 TAILQ_INSERT_TAIL(bindings, $<binding>1, bindings);
275 TOKBIND WHITESPACE bind { $<binding>$ = $<binding>3; }
276 | TOKBINDSYM WHITESPACE bindsym { $<binding>$ = $<binding>3; }
280 binding_modifiers NUMBER WHITESPACE command
282 printf("\tFound binding mod%d with key %d and command %s\n", $<number>1, $2, $<string>4);
283 Binding *new = scalloc(sizeof(Binding));
285 new->keycode = $<number>2;
286 new->mods = $<number>1;
287 new->command = $<string>4;
294 binding_modifiers word_or_number WHITESPACE command
296 printf("\tFound symbolic mod%d with key %s and command %s\n", $<number>1, $<string>2, $<string>4);
297 Binding *new = scalloc(sizeof(Binding));
299 new->symbol = $<string>2;
300 new->mods = $<number>1;
301 new->command = $<string>4;
311 asprintf(&$<string>$, "%d", $1);
316 TOKMODE WHITESPACE QUOTEDSTRING WHITESPACE '{' modelines '}'
318 if (strcasecmp($<string>3, "default") == 0) {
319 printf("You cannot use the name \"default\" for your mode\n");
322 printf("\t now in mode %s\n", $<string>3);
323 printf("\t current bindings = %p\n", current_bindings);
325 TAILQ_FOREACH(binding, current_bindings, bindings) {
326 printf("got binding on mods %d, keycode %d, symbol %s, command %s\n",
327 binding->mods, binding->keycode, binding->symbol, binding->command);
330 struct Mode *mode = scalloc(sizeof(struct Mode));
331 mode->name = $<string>3;
332 mode->bindings = current_bindings;
333 current_bindings = NULL;
334 SLIST_INSERT_HEAD(&modes, mode, modes);
349 if (current_bindings == NULL) {
350 current_bindings = scalloc(sizeof(struct bindings_head));
351 TAILQ_INIT(current_bindings);
354 TAILQ_INSERT_TAIL(current_bindings, $<binding>1, bindings);
359 TOKFLOATING_MODIFIER WHITESPACE binding_modifiers
361 DLOG("floating modifier = %d\n", $<number>3);
362 config.floating_modifier = $<number>3;
367 TOKNEWCONTAINER WHITESPACE TOKCONTAINERMODE
369 DLOG("new containers will be in mode %d\n", $<number>3);
370 config.container_mode = $<number>3;
373 /* We also need to change the layout of the already existing
374 * workspaces here. Workspaces may exist at this point because
375 * of the other directives which are modifying workspaces
376 * (setting the preferred screen or name). While the workspace
377 * objects are already created, they have never been used.
378 * Thus, the user very likely awaits the default container mode
379 * to trigger in this case, regardless of where it is inside
380 * his configuration file. */
382 TAILQ_FOREACH(ws, workspaces, workspaces) {
383 if (ws->table == NULL)
385 switch_layout_mode(global_conn,
387 config.container_mode);
391 | TOKNEWCONTAINER WHITESPACE TOKSTACKLIMIT WHITESPACE TOKSTACKLIMIT WHITESPACE NUMBER
393 DLOG("stack-limit %d with val %d\n", $<number>5, $<number>7);
394 config.container_stack_limit = $<number>5;
395 config.container_stack_limit_value = $<number>7;
398 /* See the comment above */
400 TAILQ_FOREACH(ws, workspaces, workspaces) {
401 if (ws->table == NULL)
403 Container *con = ws->table[0][0];
404 con->stack_limit = config.container_stack_limit;
405 con->stack_limit_value = config.container_stack_limit_value;
412 TOKNEWWINDOW WHITESPACE WORD
414 DLOG("new windows should start in mode %s\n", $<string>3);
415 config.default_border = sstrdup($<string>3);
422 $<number>$ = ($<number>1 == 1);
426 DLOG("checking word \"%s\"\n", $<string>1);
427 $<number>$ = (strcasecmp($<string>1, "yes") == 0 ||
428 strcasecmp($<string>1, "true") == 0 ||
429 strcasecmp($<string>1, "on") == 0 ||
430 strcasecmp($<string>1, "enable") == 0 ||
431 strcasecmp($<string>1, "active") == 0);
436 TOKFOCUSFOLLOWSMOUSE WHITESPACE bool
438 DLOG("focus follows mouse = %d\n", $<number>3);
439 config.disable_focus_follows_mouse = !($<number>3);
444 TOKWORKSPACEBAR WHITESPACE bool
446 DLOG("workspace bar = %d\n", $<number>3);
447 config.disable_workspace_bar = !($<number>3);
452 TOKWORKSPACE WHITESPACE NUMBER WHITESPACE TOKOUTPUT WHITESPACE OUTPUT optional_workspace_name
454 int ws_num = $<number>3;
456 DLOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
459 Workspace *ws = workspace_get(ws_num - 1);
460 ws->preferred_output = $<string>7;
461 if ($<string>8 != NULL) {
462 workspace_set_name(ws, $<string>8);
468 | TOKWORKSPACE WHITESPACE NUMBER WHITESPACE workspace_name
470 int ws_num = $<number>3;
472 DLOG("Invalid workspace assignment, workspace number %d out of range\n", ws_num);
474 DLOG("workspace name to: %s\n", $<string>5);
476 if ($<string>5 != NULL) {
477 workspace_set_name(workspace_get(ws_num - 1), $<string>5);
485 optional_workspace_name:
486 /* empty */ { $<string>$ = NULL; }
487 | WHITESPACE workspace_name { $<string>$ = $<string>2; }
491 QUOTEDSTRING { $<string>$ = $<string>1; }
492 | STR { $<string>$ = $<string>1; }
493 | WORD { $<string>$ = $<string>1; }
497 TOKASSIGN WHITESPACE window_class WHITESPACE optional_arrow assign_target
500 printf("assignment of %s\n", $<string>3);
502 struct Assignment *new = $<assignment>6;
503 printf(" to %d\n", new->workspace);
504 printf(" floating = %d\n", new->floating);
505 new->windowclass_title = $<string>3;
506 TAILQ_INSERT_TAIL(&assignments, new, assignments);
515 struct Assignment *new = scalloc(sizeof(struct Assignment));
516 new->workspace = $<number>1;
517 new->floating = ASSIGN_FLOATING_NO;
518 $<assignment>$ = new;
524 struct Assignment *new = scalloc(sizeof(struct Assignment));
525 new->floating = ASSIGN_FLOATING_ONLY;
526 $<assignment>$ = new;
532 struct Assignment *new = scalloc(sizeof(struct Assignment));
533 new->workspace = $<number>2;
534 new->floating = ASSIGN_FLOATING;
535 $<assignment>$ = new;
547 | TOKARROW WHITESPACE
551 TOKIPCSOCKET WHITESPACE STR
553 config.ipc_socket_path = $<string>3;
558 TOKEXEC WHITESPACE STR
560 struct Autostart *new = smalloc(sizeof(struct Autostart));
561 new->command = $<string>3;
562 TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
567 TOKTERMINAL WHITESPACE STR
569 ELOG("The terminal option is DEPRECATED and has no effect. "
570 "Please remove it from your configuration file.\n");
575 TOKFONT WHITESPACE STR
577 config.font = $<string>3;
578 printf("font %s\n", config.font);
583 TOKSINGLECOLOR WHITESPACE colorpixel
585 uint32_t *dest = $<single_color>1;
591 TOKCOLOR WHITESPACE colorpixel WHITESPACE colorpixel WHITESPACE colorpixel
593 struct Colortriple *dest = $<color>1;
595 dest->border = $<number>3;
596 dest->background = $<number>5;
597 dest->text = $<number>7;
605 if (asprintf(&hex, "#%s", $<string>2) == -1)
607 $<number>$ = get_colorpixel(hex);
614 /* NULL */ { $<number>$ = 0; }
616 | binding_modifiers '+' binding_modifier { $<number>$ = $<number>1 | $<number>3; }
617 | binding_modifiers '+' { $<number>$ = $<number>1; }
621 MODIFIER { $<number>$ = $<number>1; }
622 | TOKCONTROL { $<number>$ = BIND_CONTROL; }
623 | TOKSHIFT { $<number>$ = BIND_SHIFT; }