320 lines
14 KiB
C
320 lines
14 KiB
C
/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <glob.h>
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#include "i3.h"
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#include "util.h"
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#include "config.h"
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#include "xcb.h"
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Config config;
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/*
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* This function resolves ~ in pathnames.
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*
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*/
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static char *glob_path(const char *path) {
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static glob_t globbuf;
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if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
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die("glob() failed");
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char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
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globfree(&globbuf);
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return result;
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}
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/*
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* This function does a very simple replacement of each instance of key with value.
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*
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*/
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static void replace_variable(char *buffer, const char *key, const char *value) {
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char *pos;
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/* To prevent endless recursions when the user makes an error configuring,
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* we stop after 100 replacements. That should be vastly more than enough. */
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int c = 0;
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LOG("Replacing %s with %s\n", key, value);
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while ((pos = strcasestr(buffer, key)) != NULL && c++ < 100) {
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LOG("replacing variable %s in \"%s\" with \"%s\"\n", key, buffer, value);
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char *rest = pos + strlen(key);
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*pos = '\0';
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char *replaced;
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asprintf(&replaced, "%s%s%s", buffer, value, rest);
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/* Hm, this is a bit ugly, but sizeof(buffer) = 4, as it’s just a pointer.
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* So we need to hard-code the dimensions here. */
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strncpy(buffer, replaced, 1026);
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free(replaced);
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}
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}
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/*
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* Reads the configuration from ~/.i3/config or /etc/i3/config if not found.
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*
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* If you specify override_configpath, only this path is used to look for a
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* configuration file.
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*
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*/
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void load_configuration(xcb_connection_t *conn, const char *override_configpath) {
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SLIST_HEAD(variables_head, Variable) variables;
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#define OPTION_STRING(name) \
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if (strcasecmp(key, #name) == 0) { \
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config.name = sstrdup(value); \
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continue; \
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}
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#define REQUIRED_OPTION(name) \
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if (config.name == NULL) \
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die("You did not specify required configuration option " #name "\n");
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#define OPTION_COLORTRIPLE(opt, name) \
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if (strcasecmp(key, opt) == 0) { \
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char border[8], background[8], text[8]; \
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memset(border, 0, sizeof(border)); \
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memset(background, 0, sizeof(background)); \
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memset(text, 0, sizeof(text)); \
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border[0] = background[0] = text[0] = '#'; \
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if (sscanf(value, "#%06[0-9a-fA-F] #%06[0-9a-fA-F] #%06[0-9a-fA-F]", \
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border + 1, background + 1, text + 1) != 3 || \
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strlen(border) != 7 || \
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strlen(background) != 7 || \
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strlen(text) != 7) \
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die("invalid color code line: %s\n", value); \
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config.name.border = get_colorpixel(conn, border); \
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config.name.background = get_colorpixel(conn, background); \
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config.name.text = get_colorpixel(conn, text); \
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continue; \
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}
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/* Clear the old config or initialize the data structure */
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memset(&config, 0, sizeof(config));
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SLIST_INIT(&variables);
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/* Initialize default colors */
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config.client.focused.border = get_colorpixel(conn, "#4c7899");
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config.client.focused.background = get_colorpixel(conn, "#285577");
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config.client.focused.text = get_colorpixel(conn, "#ffffff");
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config.client.focused_inactive.border = get_colorpixel(conn, "#4c7899");
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config.client.focused_inactive.background = get_colorpixel(conn, "#555555");
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config.client.focused_inactive.text = get_colorpixel(conn, "#ffffff");
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config.client.unfocused.border = get_colorpixel(conn, "#333333");
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config.client.unfocused.background = get_colorpixel(conn, "#222222");
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config.client.unfocused.text = get_colorpixel(conn, "#888888");
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config.bar.focused.border = get_colorpixel(conn, "#4c7899");
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config.bar.focused.background = get_colorpixel(conn, "#285577");
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config.bar.focused.text = get_colorpixel(conn, "#ffffff");
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config.bar.unfocused.border = get_colorpixel(conn, "#333333");
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config.bar.unfocused.background = get_colorpixel(conn, "#222222");
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config.bar.unfocused.text = get_colorpixel(conn, "#888888");
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FILE *handle;
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if (override_configpath != NULL) {
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if ((handle = fopen(override_configpath, "r")) == NULL)
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die("Could not open configfile \"%s\".\n", override_configpath);
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} else {
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/* We first check for ~/.i3/config, then for /etc/i3/config */
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char *globbed = glob_path("~/.i3/config");
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if ((handle = fopen(globbed, "r")) == NULL)
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if ((handle = fopen("/etc/i3/config", "r")) == NULL)
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die("Neither \"%s\" nor /etc/i3/config could be opened\n", globbed);
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free(globbed);
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}
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char key[512], value[512], buffer[1026];
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while (!feof(handle)) {
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if (fgets(buffer, 1024, handle) == NULL) {
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/* fgets returns NULL on EOF and on error, so see which one it is. */
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if (feof(handle))
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break;
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die("Could not read configuration file\n");
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}
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if (config.terminal != NULL)
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replace_variable(buffer, "$terminal", config.terminal);
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/* Replace all custom variables */
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struct Variable *current;
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SLIST_FOREACH(current, &variables, variables)
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replace_variable(buffer, current->key, current->value);
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/* sscanf implicitly strips whitespace. Also, we skip comments and empty lines. */
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if (sscanf(buffer, "%s %[^\n]", key, value) < 1 ||
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key[0] == '#' || strlen(key) < 3)
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continue;
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OPTION_STRING(terminal);
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OPTION_STRING(font);
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/* Colors */
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OPTION_COLORTRIPLE("client.focused", client.focused);
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OPTION_COLORTRIPLE("client.focused_inactive", client.focused_inactive);
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OPTION_COLORTRIPLE("client.unfocused", client.unfocused);
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OPTION_COLORTRIPLE("bar.focused", bar.focused);
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OPTION_COLORTRIPLE("bar.unfocused", bar.unfocused);
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/* exec-lines (autostart) */
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if (strcasecmp(key, "exec") == 0) {
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struct Autostart *new = smalloc(sizeof(struct Autostart));
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new->command = sstrdup(value);
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TAILQ_INSERT_TAIL(&autostarts, new, autostarts);
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continue;
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}
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/* key bindings */
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if (strcasecmp(key, "bind") == 0) {
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#define CHECK_MODIFIER(name) \
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if (strncasecmp(walk, #name, strlen(#name)) == 0) { \
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modifiers |= BIND_##name; \
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walk += strlen(#name) + 1; \
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continue; \
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}
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char *walk = value, *rest;
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uint32_t modifiers = 0;
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while (*walk != '\0') {
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/* Need to check for Mod1-5, Ctrl, Shift, Mode_switch */
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CHECK_MODIFIER(SHIFT);
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CHECK_MODIFIER(CONTROL);
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CHECK_MODIFIER(MODE_SWITCH);
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CHECK_MODIFIER(MOD1);
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CHECK_MODIFIER(MOD2);
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CHECK_MODIFIER(MOD3);
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CHECK_MODIFIER(MOD4);
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CHECK_MODIFIER(MOD5);
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/* No modifier found? Then we’re done with this step */
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break;
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}
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/* Now check for the keycode */
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int keycode = strtol(walk, &rest, 10);
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if (!rest || *rest != ' ')
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die("Invalid binding\n");
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rest++;
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LOG("keycode = %d, modifiers = %d, command = *%s*\n", keycode, modifiers, rest);
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Binding *new = smalloc(sizeof(Binding));
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new->keycode = keycode;
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new->mods = modifiers;
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new->command = sstrdup(rest);
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TAILQ_INSERT_TAIL(&bindings, new, bindings);
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continue;
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}
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if (strcasecmp(key, "floating_modifier") == 0) {
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char *walk = value;
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uint32_t modifiers = 0;
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while (*walk != '\0') {
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/* Need to check for Mod1-5, Ctrl, Shift, Mode_switch */
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CHECK_MODIFIER(SHIFT);
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CHECK_MODIFIER(CONTROL);
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CHECK_MODIFIER(MODE_SWITCH);
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CHECK_MODIFIER(MOD1);
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CHECK_MODIFIER(MOD2);
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CHECK_MODIFIER(MOD3);
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CHECK_MODIFIER(MOD4);
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CHECK_MODIFIER(MOD5);
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/* No modifier found? Then we’re done with this step */
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break;
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}
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LOG("Floating modifiers = %d\n", modifiers);
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config.floating_modifier = modifiers;
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continue;
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}
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/* assign window class[/window title] → workspace */
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if (strcasecmp(key, "assign") == 0) {
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LOG("assign: \"%s\"\n", value);
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char *class_title = sstrdup(value);
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char *target;
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/* If the window class/title is quoted we skip quotes */
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if (class_title[0] == '"') {
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class_title++;
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char *end = strchr(class_title, '"');
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if (end == NULL)
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die("Malformed assignment, couldn't find terminating quote\n");
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*end = '\0';
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} else {
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/* If it is not quoted, we terminate it at the first space */
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char *end = strchr(class_title, ' ');
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if (end == NULL)
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die("Malformed assignment, couldn't find terminating space\n");
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*end = '\0';
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}
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/* The target is the last argument separated by a space */
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if ((target = strrchr(value, ' ')) == NULL)
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die("Malformed assignment, couldn't find target\n");
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target++;
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if (*target != '~' && (atoi(target) < 1 || atoi(target) > 10))
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die("Malformed assignment, invalid workspace number\n");
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LOG("assignment parsed: \"%s\" to \"%s\"\n", class_title, target);
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struct Assignment *new = scalloc(sizeof(struct Assignment));
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new->windowclass_title = class_title;
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if (*target == '~')
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new->floating = true;
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else new->workspace = atoi(target);
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TAILQ_INSERT_TAIL(&assignments, new, assignments);
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continue;
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}
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/* set a custom variable */
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if (strcasecmp(key, "set") == 0) {
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if (value[0] != '$')
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die("Malformed variable assignment, name has to start with $\n");
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/* get key/value for this variable */
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char *v_key = value, *v_value;
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if ((v_value = strstr(value, " ")) == NULL)
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die("Malformed variable assignment, need a value\n");
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*(v_value++) = '\0';
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struct Variable *new = scalloc(sizeof(struct Variable));
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new->key = sstrdup(v_key);
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new->value = sstrdup(v_value);
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SLIST_INSERT_HEAD(&variables, new, variables);
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LOG("Got new variable %s = %s\n", v_key, v_value);
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continue;
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}
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die("Unknown configfile option: %s\n", key);
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}
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fclose(handle);
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REQUIRED_OPTION(terminal);
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REQUIRED_OPTION(font);
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while (!SLIST_EMPTY(&variables)) {
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struct Variable *v = SLIST_FIRST(&variables);
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SLIST_REMOVE_HEAD(&variables, variables);
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free(v->key);
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free(v->value);
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free(v);
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}
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return;
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}
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