git.sur5r.net Git - i3/i3/blob - src/config.c

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  */
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <sys/stat.h>
  14 #include <stdlib.h>
  15 #include <glob.h>
  16
  17 #include "i3.h"
  18 #include "util.h"
  19 #include "config.h"
  20 #include "xcb.h"
  21
  22 Config config;
  23
  24 /*
  25  * This function resolves ~ in pathnames.
  26  *
  27  */
  28 static char *glob_path(const char *path) {
  29         static glob_t globbuf;
  30         if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
  31                 die("glob() failed");
  32         char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
  33         globfree(&globbuf);
  34         return result;
  35 }
  36
  37
  38 /*
  39  * Reads the configuration from ~/.i3/config or /etc/i3/config if not found.
  40  *
  41  * If you specify override_configpath, only this path is used to look for a
  42  * configuration file.
  43  *
  44  */
  45 void load_configuration(xcb_connection_t *conn, const char *override_configpath) {
  46 #define OPTION_STRING(name) \
  47         if (strcasecmp(key, #name) == 0) { \
  48                 config.name = sstrdup(value); \
  49                 continue; \
  50         }
  51
  52 #define REQUIRED_OPTION(name) \
  53         if (config.name == NULL) \
  54                 die("You did not specify required configuration option " #name "\n");
  55
  56 #define OPTION_COLORTRIPLE(opt, name) \
  57         if (strcasecmp(key, opt) == 0) { \
  58                 char border[8], background[8], text[8]; \
  59                 memset(border, 0, sizeof(border)); \
  60                 memset(background, 0, sizeof(background)); \
  61                 memset(text, 0, sizeof(text)); \
  62                 border[0] = background[0] = text[0] = '#'; \
  63                 if (sscanf(value, "#%06[0-9a-fA-F] #%06[0-9a-fA-F] #%06[0-9a-fA-F]", \
  64                     border + 1, background + 1, text + 1) != 3 || \
  65                     strlen(border) != 7 || \
  66                     strlen(background) != 7 || \
  67                     strlen(text) != 7) \
  68                         die("invalid color code line: %s\n", value); \
  69                 config.name.border = get_colorpixel(conn, border); \
  70                 config.name.background = get_colorpixel(conn, background); \
  71                 config.name.text = get_colorpixel(conn, text); \
  72                 continue; \
  73         }
  74
  75         /* Clear the old config or initialize the data structure */
  76         memset(&config, 0, sizeof(config));
  77
  78         /* Initialize default colors */
  79         config.client.focused.border = get_colorpixel(conn, "#4c7899");
  80         config.client.focused.background = get_colorpixel(conn, "#285577");
  81         config.client.focused.text = get_colorpixel(conn, "#ffffff");
  82
  83         config.client.focused_inactive.border = get_colorpixel(conn, "#4c7899");
  84         config.client.focused_inactive.background = get_colorpixel(conn, "#555555");
  85         config.client.focused_inactive.text = get_colorpixel(conn, "#ffffff");
  86
  87         config.client.unfocused.border = get_colorpixel(conn, "#333333");
  88         config.client.unfocused.background = get_colorpixel(conn, "#222222");
  89         config.client.unfocused.text = get_colorpixel(conn, "#888888");
  90
  91         config.bar.focused.border = get_colorpixel(conn, "#4c7899");
  92         config.bar.focused.background = get_colorpixel(conn, "#285577");
  93         config.bar.focused.text = get_colorpixel(conn, "#ffffff");
  94
  95         config.bar.unfocused.border = get_colorpixel(conn, "#333333");
  96         config.bar.unfocused.background = get_colorpixel(conn, "#222222");
  97         config.bar.unfocused.text = get_colorpixel(conn, "#888888");
  98
  99         FILE *handle;
 100         if (override_configpath != NULL) {
 101                 if ((handle = fopen(override_configpath, "r")) == NULL)
 102                         die("Could not open configfile \"%s\".\n", override_configpath);
 103         } else {
 104                 /* We first check for ~/.i3/config, then for /etc/i3/config */
 105                 char *globbed = glob_path("~/.i3/config");
 106                 if ((handle = fopen(globbed, "r")) == NULL)
 107                         if ((handle = fopen("/etc/i3/config", "r")) == NULL)
 108                                 die("Neither \"%s\" nor /etc/i3/config could be opened\n", globbed);
 109                 free(globbed);
 110         }
 111         char key[512], value[512], buffer[1026];
 112
 113         while (!feof(handle)) {
 114                 if (fgets(buffer, 1024, handle) == NULL) {
 115                         /* fgets returns NULL on EOF and on error, so see which one it is. */
 116                         if (feof(handle))
 117                                 break;
 118                         die("Could not read configuration file\n");
 119                 }
 120
 121                 /* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
 122                 if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
 123                     key[0] == '#' || strlen(key) < 3)
 124                         continue;
 125
 126                 OPTION_STRING(terminal);
 127                 OPTION_STRING(font);
 128
 129                 /* Colors */
 130                 OPTION_COLORTRIPLE("client.focused", client.focused);
 131                 OPTION_COLORTRIPLE("client.focused_inactive", client.focused_inactive);
 132                 OPTION_COLORTRIPLE("client.unfocused", client.unfocused);
 133                 OPTION_COLORTRIPLE("bar.focused", bar.focused);
 134                 OPTION_COLORTRIPLE("bar.unfocused", bar.unfocused);
 135
 136                 /* exec-lines (autostart) */
 137                 if (strcasecmp(key, "exec") == 0) {
 138                         struct Autostart *new = smalloc(sizeof(struct Autostart));
 139                         new->command = sstrdup(value);
 140                         TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
 141                         continue;
 142                 }
 143
 144                 /* key bindings */
 145                 if (strcasecmp(key, "bind") == 0) {
 146                         #define CHECK_MODIFIER(name) \
 147                                 if (strncasecmp(walk, #name, strlen(#name)) == 0) { \
 148                                         modifiers |= BIND_##name; \
 149                                         walk += strlen(#name) + 1; \
 150                                         continue; \
 151                                 }
 152                         char *walk = value, *rest;
 153                         uint32_t modifiers = 0;
 154
 155                         while (*walk != '\0') {
 156                                 /* Need to check for Mod1-5, Ctrl, Shift, Mode_switch */
 157                                 CHECK_MODIFIER(SHIFT);
 158                                 CHECK_MODIFIER(CONTROL);
 159                                 CHECK_MODIFIER(MODE_SWITCH);
 160                                 CHECK_MODIFIER(MOD1);
 161                                 CHECK_MODIFIER(MOD2);
 162                                 CHECK_MODIFIER(MOD3);
 163                                 CHECK_MODIFIER(MOD4);
 164                                 CHECK_MODIFIER(MOD5);
 165
 166                                 /* No modifier found? Then we’re done with this step */
 167                                 break;
 168                         }
 169
 170                         /* Now check for the keycode */
 171                         int keycode = strtol(walk, &rest, 10);
 172                         if (!rest || *rest != ' ')
 173                                 die("Invalid binding\n");
 174                         rest++;
 175                         LOG("keycode = %d, modifiers = %d, command = *%s*\n", keycode, modifiers, rest);
 176                         Binding *new = smalloc(sizeof(Binding));
 177                         new->keycode = keycode;
 178                         new->mods = modifiers;
 179                         new->command = sstrdup(rest);
 180                         TAILQ_INSERT_TAIL(&bindings, new, bindings);
 181                         continue;
 182                 }
 183
 184                 /* assign window class[/window title] → workspace */
 185                 if (strcasecmp(key, "assign") == 0) {
 186                         LOG("assign: \"%s\"\n", value);
 187                         char *class_title = sstrdup(value);
 188                         char *target;
 189
 190                         /* If the window class/title is quoted we skip quotes */
 191                         if (class_title[0] == '"') {
 192                                 class_title++;
 193                                 char *end = strchr(class_title, '"');
 194                                 if (end == NULL)
 195                                         die("Malformed assignment, couldn't find terminating quote\n");
 196                                 *end = '\0';
 197                         } else {
 198                                 /* If it is not quoted, we terminate it at the first space */
 199                                 char *end = strchr(class_title, ' ');
 200                                 if (end == NULL)
 201                                         die("Malformed assignment, couldn't find terminating space\n");
 202                                 *end = '\0';
 203                         }
 204
 205                         /* The target is the last argument separated by a space */
 206                         if ((target = strrchr(value, ' ')) == NULL)
 207                                 die("Malformed assignment, couldn't find target\n");
 208                         target++;
 209
 210                         if (atoi(target) < 1 || atoi(target) > 10)
 211                                 die("Malformed assignment, invalid workspace number\n");
 212
 213                         LOG("assignment parsed: \"%s\" to \"%s\"\n", class_title, target);
 214
 215                         struct Assignment *new = smalloc(sizeof(struct Assignment));
 216                         new->windowclass_title = class_title;
 217                         new->workspace = atoi(target);
 218                         TAILQ_INSERT_TAIL(&assignments, new, assignments);
 219                         continue;
 220                 }
 221
 222                 die("Unknown configfile option: %s\n", key);
 223         }
 224         fclose(handle);
 225
 226         REQUIRED_OPTION(terminal);
 227         REQUIRED_OPTION(font);
 228
 229         return;
 230 }