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