4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
18 #define die(...) errx(EXIT_FAILURE, __VA_ARGS__);
19 #define exit_if_null(pointer, ...) { if (pointer == NULL) die(__VA_ARGS__); }
20 #define STARTS_WITH(string, needle) (strncasecmp(string, needle, strlen(needle)) == 0)
21 #define CIRCLEQ_NEXT_OR_NULL(head, elm, field) (CIRCLEQ_NEXT(elm, field) != CIRCLEQ_END(head) ? \
22 CIRCLEQ_NEXT(elm, field) : NULL)
23 #define CIRCLEQ_PREV_OR_NULL(head, elm, field) (CIRCLEQ_PREV(elm, field) != CIRCLEQ_END(head) ? \
24 CIRCLEQ_PREV(elm, field) : NULL)
25 #define FOR_TABLE(workspace) \
26 for (int cols = 0; cols < (workspace)->cols; cols++) \
27 for (int rows = 0; rows < (workspace)->rows; rows++)
29 #define NODES_FOREACH(head) \
30 for (Con *child = (Con*)-1; (child == (Con*)-1) && ((child = 0), true);) \
31 TAILQ_FOREACH(child, &((head)->nodes_head), nodes)
33 /* greps the ->nodes of the given head and returns the first node that matches the given condition */
34 #define GREP_FIRST(dest, head, condition) \
35 NODES_FOREACH(head) { \
43 #define FREE(pointer) do { \
44 if (pointer != NULL) { \
51 #define CALL(obj, member, ...) obj->member(obj, ## __VA_ARGS__)
53 int min(int a, int b);
54 int max(int a, int b);
55 bool rect_contains(Rect rect, uint32_t x, uint32_t y);
56 Rect rect_add(Rect a, Rect b);
59 * Updates *destination with new_value and returns true if it was changed or false
63 bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
66 * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
67 * there is no more memory available)
70 void *smalloc(size_t size);
73 * Safe-wrapper around calloc which exits if malloc returns NULL (meaning that
74 * there is no more memory available)
77 void *scalloc(size_t size);
80 * Safe-wrapper around realloc which exits if realloc returns NULL (meaning
81 * that there is no more memory available).
84 void *srealloc(void *ptr, size_t size);
87 * Safe-wrapper around strdup which exits if malloc returns NULL (meaning that
88 * there is no more memory available)
91 char *sstrdup(const char *str);
94 * Starts the given application by passing it through a shell. We use double
95 * fork to avoid zombie processes. As the started application’s parent exits
96 * (immediately), the application is reparented to init (process-id 1), which
97 * correctly handles childs, so we don’t have to do it :-).
99 * The shell is determined by looking for the SHELL environment variable. If
100 * it does not exist, /bin/sh is used.
103 void start_application(const char *command);
106 * exec()s an i3 utility, for example the config file migration script or
107 * i3-nagbar. This function first searches $PATH for the given utility named,
108 * then falls back to the dirname() of the i3 executable path and then falls
109 * back to the dirname() of the target of /proc/self/exe (on linux).
111 * This function should be called after fork()ing.
113 * The first argument of the given argv vector will be overwritten with the
114 * executable name, so pass NULL.
116 * If the utility cannot be found in any of these locations, it exits with
120 void exec_i3_utility(char *name, char *argv[]);
123 * Checks a generic cookie for errors and quits with the given message if
124 * there was an error.
127 void check_error(xcb_connection_t *conn, xcb_void_cookie_t cookie,
131 * Converts the given string to UCS-2 big endian for use with
132 * xcb_image_text_16(). The amount of real glyphs is stored in real_strlen, a
133 * buffer containing the UCS-2 encoded string (16 bit per glyph) is
134 * returned. It has to be freed when done.
137 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
140 * This function resolves ~ in pathnames.
141 * It may resolve wildcards in the first part of the path, but if no match
142 * or multiple matches are found, it just returns a copy of path as given.
145 char *resolve_tilde(const char *path);
148 * Checks if the given path exists by calling stat().
151 bool path_exists(const char *path);
155 * Returns the name of a temporary file with the specified prefix.
158 char *get_process_filename(const char *prefix);
161 * Restart i3 in-place
162 * appends -a to argument list to disable autostart
165 void i3_restart(bool forget_layout);
167 #if defined(__OpenBSD__) || defined(__APPLE__)
171 * Find the first occurrence of the byte string s in byte string l.
174 void *memmem(const void *l, size_t l_len, const void *s, size_t s_len);
178 #if defined(__APPLE__)