sway/sway/config.c

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C
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#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include "readline.h"
#include "stringop.h"
#include "list.h"
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#include "log.h"
#include "commands.h"
#include "config.h"
#include "layout.h"
#include "input_state.h"
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struct sway_config *config = NULL;
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static void free_variable(struct sway_variable *var) {
free(var->name);
free(var->value);
free(var);
}
static void free_binding(struct sway_binding *bind) {
free_flat_list(bind->keys);
free(bind->command);
free(bind);
}
static void free_mode(struct sway_mode *mode) {
free(mode->name);
int i;
for (i = 0; i < mode->bindings->length; ++i) {
free_binding(mode->bindings->items[i]);
}
list_free(mode->bindings);
free(mode);
}
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static void free_output_config(struct output_config *oc) {
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free(oc->name);
free(oc);
}
static void free_workspace_output(struct workspace_output *wo) {
free(wo->output);
free(wo->workspace);
free(wo);
}
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static void free_config(struct sway_config *config) {
int i;
for (i = 0; i < config->symbols->length; ++i) {
free_variable(config->symbols->items[i]);
}
list_free(config->symbols);
for (i = 0; i < config->modes->length; ++i) {
free_mode(config->modes->items[i]);
}
list_free(config->modes);
free_flat_list(config->cmd_queue);
for (i = 0; i < config->workspace_outputs->length; ++i) {
free_workspace_output(config->workspace_outputs->items[i]);
}
list_free(config->workspace_outputs);
for (i = 0; i < config->output_configs->length; ++i) {
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free_output_config(config->output_configs->items[i]);
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}
list_free(config->output_configs);
free(config);
}
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static bool file_exists(const char *path) {
return access(path, R_OK) != -1;
}
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static void config_defaults(struct sway_config *config) {
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config->symbols = create_list();
config->modes = create_list();
config->workspace_outputs = create_list();
config->output_configs = create_list();
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config->cmd_queue = create_list();
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config->current_mode = malloc(sizeof(struct sway_mode));
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config->current_mode->name = malloc(sizeof("default"));
strcpy(config->current_mode->name, "default");
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config->current_mode->bindings = create_list();
list_add(config->modes, config->current_mode);
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config->floating_mod = 0;
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config->default_layout = L_NONE;
config->default_orientation = L_NONE;
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// Flags
config->focus_follows_mouse = true;
config->mouse_warping = true;
config->reloading = false;
config->active = false;
config->failed = false;
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config->auto_back_and_forth = false;
config->seamless_mouse = true;
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config->reading = false;
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config->edge_gaps = true;
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config->gaps_inner = 0;
config->gaps_outer = 0;
}
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static char *get_config_path(void) {
char *config_path = NULL;
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char *paths[3] = { getenv("HOME"), getenv("XDG_CONFIG_HOME"), "" };
int pathlen[3] = { 0, 0, 0 };
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int i;
#define home paths[0]
#define conf paths[1]
// Get home and config directories
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conf = conf ? strdup(conf) : NULL;
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home = home ? strdup(home) : NULL;
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// If config folder is unset, set it to $HOME/.config
if (!conf && home) {
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const char *def = "/.config";
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conf = malloc(strlen(home) + strlen(def) + 1);
strcpy(conf, home);
strcat(conf, def);
}
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// Get path lengths
pathlen[0] = home ? strlen(home) : 0;
pathlen[1] = conf ? strlen(conf) : 0;
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#undef home
#undef conf
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// Search for config file from search paths
static const char *search_paths[] = {
"/.sway/config", // Prepend with $home
"/sway/config", // Prepend with $config
"/.i3/config", // $home
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"/i3/config", // $config
"/etc/sway/config",
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"/etc/i3/config"
};
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for (i = 0; i < (int)(sizeof(search_paths) / sizeof(char *)); ++i) {
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// Only try path if it is set by enviroment variables
if (paths[i%3]) {
char *test = malloc(pathlen[i%3] + strlen(search_paths[i]) + 1);
strcpy(test, paths[i%3]);
strcpy(test + pathlen[i%3], search_paths[i]);
sway_log(L_DEBUG, "Checking for config at %s", test);
if (file_exists(test)) {
config_path = test;
goto cleanup;
}
free(test);
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}
}
sway_log(L_DEBUG, "Trying to find config in XDG_CONFIG_DIRS");
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char *xdg_config_dirs = getenv("XDG_CONFIG_DIRS");
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if (xdg_config_dirs) {
list_t *paths = split_string(xdg_config_dirs, ":");
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const char *name = "/sway/config";
for (i = 0; i < paths->length; i++ ) {
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char *test = malloc(strlen(paths->items[i]) + strlen(name) + 1);
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strcpy(test, paths->items[i]);
strcat(test, name);
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if (file_exists(test)) {
config_path = test;
break;
}
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free(test);
}
free_flat_list(paths);
}
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cleanup:
free(paths[0]);
free(paths[1]);
return config_path;
}
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bool load_config(const char *file) {
sway_log(L_INFO, "Loading config");
input_init();
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char *path;
if (file != NULL) {
path = strdup(file);
} else {
path = get_config_path();
}
if (path == NULL) {
sway_log(L_ERROR, "Unable to find a config file!");
return false;
}
FILE *f = fopen(path, "r");
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if (!f) {
fprintf(stderr, "Unable to open %s for reading", path);
free(path);
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return false;
}
free(path);
bool config_load_success;
if (config) {
config_load_success = read_config(f, true);
} else {
config_load_success = read_config(f, false);
}
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fclose(f);
return config_load_success;
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}
bool read_config(FILE *file, bool is_active) {
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struct sway_config *old_config = config;
config = malloc(sizeof(struct sway_config));
config_defaults(config);
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config->reading = true;
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if (is_active) {
sway_log(L_DEBUG, "Performing configuration file reload");
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config->reloading = true;
config->active = true;
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}
bool success = true;
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enum cmd_status block = CMD_BLOCK_END;
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char *line;
while (!feof(file)) {
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line = read_line(file);
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line = strip_comments(line);
struct cmd_results *res = config_command(line);
switch(res->status) {
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case CMD_FAILURE:
case CMD_INVALID:
sway_log(L_ERROR, "Error on line '%s': %s", line, res->error);
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success = false;
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break;
case CMD_DEFER:
sway_log(L_DEBUG, "Defferring command `%s'", line);
list_add(config->cmd_queue, strdup(line));
break;
case CMD_BLOCK_MODE:
if (block == CMD_BLOCK_END) {
block = CMD_BLOCK_MODE;
} else {
sway_log(L_ERROR, "Invalid block '%s'", line);
}
break;
case CMD_BLOCK_END:
switch(block) {
case CMD_BLOCK_MODE:
sway_log(L_DEBUG, "End of mode block");
config->current_mode = config->modes->items[0];
break;
case CMD_BLOCK_END:
sway_log(L_ERROR, "Unmatched }");
break;
default:;
}
default:;
}
free(line);
free(res);
}
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if (is_active) {
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config->reloading = false;
arrange_windows(&root_container, -1, -1);
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}
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if (old_config) {
free_config(old_config);
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}
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config->reading = false;
return success;
}
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void apply_output_config(struct output_config *oc, swayc_t *output) {
if (oc && oc->width > 0 && oc->height > 0) {
output->width = oc->width;
output->height = oc->height;
sway_log(L_DEBUG, "Set %s size to %ix%i", oc->name, oc->width, oc->height);
struct wlc_size new_size = { .w = oc->width, .h = oc->height };
wlc_output_set_resolution(output->handle, &new_size);
}
// Find position for it
if (oc && oc->x != -1 && oc->y != -1) {
sway_log(L_DEBUG, "Set %s position to %d, %d", oc->name, oc->x, oc->y);
output->x = oc->x;
output->y = oc->y;
} else {
int x = 0;
for (int i = 0; i < root_container.children->length; ++i) {
swayc_t *c = root_container.children->items[i];
if (c->type == C_OUTPUT) {
if (c->width + c->x > x) {
x = c->width + c->x;
}
}
}
output->x = x;
}
}
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char *do_var_replacement(char *str) {
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int i;
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char *find = str;
while ((find = strchr(find, '$'))) {
// Skip if escaped.
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if (find > str && find[-1] == '\\') {
if (find == str + 1 || !(find > str + 1 && find[-2] == '\\')) {
++find;
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continue;
}
}
// Find matching variable
for (i = 0; i < config->symbols->length; ++i) {
struct sway_variable *var = config->symbols->items[i];
int vnlen = strlen(var->name);
if (strncmp(find, var->name, vnlen) == 0) {
int vvlen = strlen(var->value);
char *newstr = malloc(strlen(str) - vnlen + vvlen + 1);
char *newptr = newstr;
int offset = find - str;
strncpy(newptr, str, offset);
newptr += offset;
strncpy(newptr, var->value, vvlen);
newptr += vvlen;
strcpy(newptr, find + vnlen);
free(str);
str = newstr;
find = str + offset + vvlen;
break;
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}
}
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if (i == config->symbols->length) {
++find;
}
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}
return str;
}