sway/sway/config.c

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11 KiB
C
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#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>
#include <wordexp.h>
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#include "wayland-desktop-shell-server-protocol.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"
#include "criteria.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);
}
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->criteria->length; ++i) {
free_criteria(config->criteria->items[i]);
}
list_free(config->criteria);
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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->criteria = 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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// Bar
config->bar.mode = "dock";
config->bar.hidden_state = "hide";
config->bar.modifier = 0;
config->bar.position = DESKTOP_SHELL_PANEL_POSITION_BOTTOM;
config->bar.status_command = "while :; do date +'%Y-%m-%d %l:%M:%S %p' && sleep 1; done";
config->bar.font = "monospace 10";
config->bar.bar_height = -1;
config->bar.workspace_buttons = true;
config->bar.strip_workspace_numbers = false;
config->bar.binding_mode_indicator = true;
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}
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static char *get_config_path(void) {
static const char *config_paths[] = {
"$HOME/.sway/config",
"$XDG_CONFIG_HOME/sway/config",
"$HOME/.i3/config",
"$XDG_CONFIG_HOME/i3/config",
FALLBACK_CONFIG_DIR "/config",
"/etc/i3/config",
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};
if (!getenv("XDG_CONFIG_HOME")) {
char *home = getenv("HOME");
char *config_home = malloc(strlen("home") + strlen("/.config") + 1);
strcpy(config_home, home);
strcat(config_home, "/.config");
setenv("XDG_CONFIG_HOME", config_home, 1);
sway_log(L_DEBUG, "Set XDG_CONFIG_HOME to %s", config_home);
}
wordexp_t p;
char *path;
int i;
for (i = 0; i < (int)(sizeof(config_paths) / sizeof(char *)); ++i) {
if (wordexp(config_paths[i], &p, 0) == 0) {
path = p.we_wordv[0];
if (file_exists(path)) {
return path;
}
}
}
return NULL; // Not reached
}
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bool load_config(const char *file) {
input_init();
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char *path;
if (file != NULL) {
path = strdup(file);
} else {
path = get_config_path();
}
sway_log(L_INFO, "Loading config from %s", 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;
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config = calloc(1, sizeof(struct sway_config));
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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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int line_number = 0;
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char *line;
while (!feof(file)) {
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line = read_line(file);
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line_number++;
line = strip_whitespace(line);
if (line[0] == '#') {
continue;
}
struct cmd_results *res = config_command(line, block);
switch(res->status) {
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case CMD_FAILURE:
case CMD_INVALID:
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sway_log(L_ERROR, "Error on line %i '%s': %s", line_number, 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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int output_name_cmp(const void *item, const void *data) {
const struct output_config *output = item;
const char *name = data;
return strcmp(output->name, name);
}
void merge_output_config(struct output_config *dst, struct output_config *src) {
if (src->name) {
if (dst->name) {
free(dst->name);
}
dst->name = strdup(src->name);
}
if (src->enabled != -1) {
dst->enabled = src->enabled;
}
if (src->width != -1) {
dst->width = src->width;
}
if (src->height != -1) {
dst->height = src->height;
}
if (src->x != -1) {
dst->x = src->x;
}
if (src->y != -1) {
dst->y = src->y;
}
if (src->background) {
if (dst->background) {
free(dst->background);
}
dst->background = strdup(src->background);
}
if (src->background_option) {
if (dst->background_option) {
free(dst->background_option);
}
dst->background_option = strdup(src->background_option);
}
}
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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if (!oc || !oc->background) {
// Look for a * config for background
int i = list_seq_find(config->output_configs, output_name_cmp, "*");
if (i >= 0) {
oc = config->output_configs->items[i];
} else {
oc = NULL;
}
}
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if (oc && oc->background) {
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int i;
for (i = 0; i < root_container.children->length; ++i) {
if (root_container.children->items[i] == output) {
break;
}
}
sway_log(L_DEBUG, "Setting background for output %d to %s", i, oc->background);
size_t bufsize = 4;
char output_id[bufsize];
snprintf(output_id, bufsize, "%d", i);
output_id[bufsize-1] = 0;
char *const cmd[] = {
"swaybg",
output_id,
oc->background,
oc->background_option,
NULL,
};
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if (fork() == 0) {
execvp(cmd[0], cmd);
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}
}
}
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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;
}
// the naming is intentional (albeit long): a workspace_output_cmp function
// would compare two structs in full, while this method only compares the
// workspace.
int workspace_output_cmp_workspace(const void *a, const void *b) {
const struct workspace_output *wsa = a, *wsb = b;
return lenient_strcmp(wsa->workspace, wsb->workspace);
}
int sway_binding_cmp_keys(const void *a, const void *b) {
const struct sway_binding *binda = a, *bindb = b;
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// Count keys pressed for this binding. important so we check long before
// short ones. for example mod+a+b before mod+a
unsigned int moda = 0, modb = 0, i;
// Count how any modifiers are pressed
for (i = 0; i < 8 * sizeof(binda->modifiers); ++i) {
moda += (binda->modifiers & 1 << i) != 0;
modb += (bindb->modifiers & 1 << i) != 0;
}
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if (bindb->keys->length + modb != binda->keys->length + moda) {
return (bindb->keys->length + modb) - (binda->keys->length + moda);
}
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// Otherwise compare keys
if (binda->modifiers > bindb->modifiers) {
return 1;
} else if (binda->modifiers < bindb->modifiers) {
return -1;
}
for (int i = 0; i < binda->keys->length; i++) {
xkb_keysym_t *ka = binda->keys->items[i],
*kb = bindb->keys->items[i];
if (*ka > *kb) {
return 1;
} else if (*ka < *kb) {
return -1;
}
}
return 0;
}
int sway_binding_cmp(const void *a, const void *b) {
int cmp = 0;
if ((cmp = sway_binding_cmp_keys(a, b)) != 0) {
return cmp;
}
const struct sway_binding *binda = a, *bindb = b;
return lenient_strcmp(binda->command, bindb->command);
}
void free_sway_binding(struct sway_binding *binding) {
if (binding->keys) {
for (int i = 0; i < binding->keys->length; i++) {
free(binding->keys->items[i]);
}
list_free(binding->keys);
}
if (binding->command) {
free(binding->command);
}
free(binding);
}