gri3-wm/src/match.c

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/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
* © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
*
* A "match" is a data structure which acts like a mask or expression to match
* certain windows or not. For example, when using commands, you can specify a
* command like this: [title="*Firefox*"] kill. The title member of the match
* data structure will then be filled and i3 will check each window using
* match_matches_window() to find the windows affected by this command.
*
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*/
#include "all.h"
/*
* Initializes the Match data structure. This function is necessary because the
* members representing boolean values (like dock) need to be initialized with
* -1 instead of 0.
*
*/
void match_init(Match *match) {
memset(match, 0, sizeof(Match));
match->dock = -1;
}
/*
* Check if a match is empty. This is necessary while parsing commands to see
* whether the user specified a match at all.
*
*/
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bool match_is_empty(Match *match) {
/* we cannot simply use memcmp() because the structure is part of a
* TAILQ and I dont want to start with things like assuming that the
* last member of a struct really is at the end in memory */
return (match->title == NULL &&
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match->mark == NULL &&
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match->application == NULL &&
match->class == NULL &&
match->instance == NULL &&
match->id == XCB_NONE &&
match->con_id == NULL &&
match->dock == -1 &&
match->floating == M_ANY);
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}
/*
* Check if a match data structure matches the given window.
*
*/
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bool match_matches_window(Match *match, i3Window *window) {
/* TODO: pcre, full matching, … */
if (match->class != NULL && window->class_class != NULL && strcasecmp(match->class, window->class_class) == 0) {
LOG("match made by window class (%s)\n", window->class_class);
return true;
}
if (match->instance != NULL && window->class_instance != NULL && strcasecmp(match->instance, window->class_instance) == 0) {
LOG("match made by window instance (%s)\n", window->class_instance);
return true;
}
if (match->id != XCB_NONE && window->id == match->id) {
LOG("match made by window id (%d)\n", window->id);
return true;
}
LOG("match->dock = %d, window->dock = %d\n", match->dock, window->dock);
if (match->dock != -1 && window->dock == match->dock) {
LOG("match made by dock\n");
return true;
}
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LOG("window %d (%s) could not be matched\n", window->id, window->class_class);
return false;
}