2 #define I3__FILE__ "match.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
9 * A "match" is a data structure which acts like a mask or expression to match
10 * certain windows or not. For example, when using commands, you can specify a
11 * command like this: [title="*Firefox*"] kill. The title member of the match
12 * data structure will then be filled and i3 will check each window using
13 * match_matches_window() to find the windows affected by this command.
18 /* From sys/time.h, not sure if it’s available on all systems. */
19 # define _i3_timercmp(a, b, CMP) \
20 (((a).tv_sec == (b).tv_sec) ? \
21 ((a).tv_usec CMP (b).tv_usec) : \
22 ((a).tv_sec CMP (b).tv_sec))
25 * Initializes the Match data structure. This function is necessary because the
26 * members representing boolean values (like dock) need to be initialized with
30 void match_init(Match *match) {
31 memset(match, 0, sizeof(Match));
33 match->urgent = U_DONTCHECK;
37 * Check if a match is empty. This is necessary while parsing commands to see
38 * whether the user specified a match at all.
41 bool match_is_empty(Match *match) {
42 /* we cannot simply use memcmp() because the structure is part of a
43 * TAILQ and I don’t want to start with things like assuming that the
44 * last member of a struct really is at the end in memory… */
45 return (match->title == NULL &&
46 match->mark == NULL &&
47 match->application == NULL &&
48 match->class == NULL &&
49 match->instance == NULL &&
50 match->window_role == NULL &&
51 match->urgent == U_DONTCHECK &&
52 match->id == XCB_NONE &&
53 match->con_id == NULL &&
55 match->floating == M_ANY);
59 * Copies the data of a match from src to dest.
62 void match_copy(Match *dest, Match *src) {
63 memcpy(dest, src, sizeof(Match));
65 /* The DUPLICATE_REGEX macro creates a new regular expression from the
66 * ->pattern of the old one. It therefore does use a little more memory then
67 * with a refcounting system, but it’s easier this way. */
68 #define DUPLICATE_REGEX(field) do { \
69 if (src->field != NULL) \
70 dest->field = regex_new(src->field->pattern); \
73 DUPLICATE_REGEX(title);
74 DUPLICATE_REGEX(mark);
75 DUPLICATE_REGEX(application);
76 DUPLICATE_REGEX(class);
77 DUPLICATE_REGEX(instance);
78 DUPLICATE_REGEX(window_role);
82 * Check if a match data structure matches the given window.
85 bool match_matches_window(Match *match, i3Window *window) {
86 LOG("Checking window 0x%08x (class %s)\n", window->id, window->class_class);
88 if (match->class != NULL) {
89 if (window->class_class != NULL &&
90 regex_matches(match->class, window->class_class)) {
91 LOG("window class matches (%s)\n", window->class_class);
97 if (match->instance != NULL) {
98 if (window->class_instance != NULL &&
99 regex_matches(match->instance, window->class_instance)) {
100 LOG("window instance matches (%s)\n", window->class_instance);
106 if (match->id != XCB_NONE) {
107 if (window->id == match->id) {
108 LOG("match made by window id (%d)\n", window->id);
110 LOG("window id does not match\n");
115 if (match->title != NULL) {
116 if (window->name != NULL &&
117 regex_matches(match->title, i3string_as_utf8(window->name))) {
118 LOG("title matches (%s)\n", i3string_as_utf8(window->name));
124 if (match->window_role != NULL) {
125 if (window->role != NULL &&
126 regex_matches(match->window_role, window->role)) {
127 LOG("window_role matches (%s)\n", window->role);
134 if (match->urgent == U_LATEST) {
135 /* if the window isn't urgent, no sense in searching */
136 if (window->urgent.tv_sec == 0) {
139 /* if we find a window that is newer than this one, bail */
140 TAILQ_FOREACH(con, &all_cons, all_cons) {
141 if ((con->window != NULL) &&
142 _i3_timercmp(con->window->urgent, window->urgent, >)) {
146 LOG("urgent matches latest\n");
149 if (match->urgent == U_OLDEST) {
150 /* if the window isn't urgent, no sense in searching */
151 if (window->urgent.tv_sec == 0) {
154 /* if we find a window that is older than this one (and not 0), bail */
155 TAILQ_FOREACH(con, &all_cons, all_cons) {
156 if ((con->window != NULL) &&
157 (con->window->urgent.tv_sec != 0) &&
158 _i3_timercmp(con->window->urgent, window->urgent, <)) {
162 LOG("urgent matches oldest\n");
165 if (match->dock != -1) {
166 if ((window->dock == W_DOCK_TOP && match->dock == M_DOCK_TOP) ||
167 (window->dock == W_DOCK_BOTTOM && match->dock == M_DOCK_BOTTOM) ||
168 ((window->dock == W_DOCK_TOP || window->dock == W_DOCK_BOTTOM) &&
169 match->dock == M_DOCK_ANY) ||
170 (window->dock == W_NODOCK && match->dock == M_NODOCK)) {
171 LOG("dock status matches\n");
173 LOG("dock status does not match\n");
178 /* We don’t check the mark because this function is not even called when
179 * the mark would have matched - it is checked in cmdparse.y itself */
180 if (match->mark != NULL) {
181 LOG("mark does not match\n");
189 * Frees the given match. It must not be used afterwards!
192 void match_free(Match *match) {
193 /* First step: free the regex fields / patterns */
194 regex_free(match->title);
195 regex_free(match->application);
196 regex_free(match->class);
197 regex_free(match->instance);
198 regex_free(match->mark);
199 regex_free(match->window_role);
201 /* Second step: free the regex helper struct itself */
203 FREE(match->application);
205 FREE(match->instance);
207 FREE(match->window_role);