sway/swaynag/config.c

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7.4 KiB
C
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#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 200112L
#include <getopt.h>
#include <stdlib.h>
#include <wordexp.h>
#include "log.h"
#include "list.h"
#include "readline.h"
#include "swaynag/swaynag.h"
#include "swaynag/types.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
static char *read_from_stdin() {
char *buffer = NULL;
while (!feof(stdin)) {
char *line = read_line(stdin);
if (!line) {
continue;
}
if (!buffer) {
buffer = strdup(line);
} else {
buffer = realloc(buffer, strlen(buffer) + strlen(line) + 2);
strcat(buffer, line);
strcat(buffer, "\n");
}
free(line);
}
if (buffer && buffer[strlen(buffer) - 1] == '\n') {
buffer[strlen(buffer) - 1] = '\0';
}
return buffer;
}
int swaynag_parse_options(int argc, char **argv, struct swaynag *swaynag,
list_t *types, char **config, bool *debug) {
static struct option opts[] = {
{"button", required_argument, NULL, 'b'},
{"config", required_argument, NULL, 'c'},
{"debug", no_argument, NULL, 'd'},
{"edge", required_argument, NULL, 'e'},
{"font", required_argument, NULL, 'f'},
{"help", no_argument, NULL, 'h'},
{"detailed-message", no_argument, NULL, 'l'},
{"detailed-button", required_argument, NULL, 'L'},
{"message", required_argument, NULL, 'm'},
{"output", required_argument, NULL, 'o'},
{"dismiss-button", required_argument, NULL, 's'},
{"type", required_argument, NULL, 't'},
{"version", no_argument, NULL, 'v'},
{0, 0, 0, 0}
};
const char *usage =
"Usage: swaynag [options...]\n"
"\n"
" -b, --button <text> <action> Create a button with text that "
"executes action when pressed. Multiple buttons can be defined.\n"
" -c, --config <path> Path to config file.\n"
" -d, --debug Enable debugging.\n"
" -e, --edge top|bottom Set the edge to use.\n"
" -f, --font <font> Set the font to use.\n"
" -h, --help Show help message and quit.\n"
" -l, --detailed-message Read a detailed message from stdin.\n"
" -L, --detailed-button <text> Set the text of the detail button.\n"
" -m, --message <msg> Set the message text.\n"
" -o, --output <output> Set the output to use.\n"
" -s, --dismiss-button <text> Set the dismiss button text.\n"
" -t, --type <type> Set the message type.\n"
" -v, --version Show the version number and quit.\n";
optind = 1;
while (1) {
int c = getopt_long(argc, argv, "b:c:de:f:hlL:m:o:s:t:v", opts, NULL);
if (c == -1) {
break;
}
switch (c) {
case 'b': // Button
if (swaynag) {
if (optind >= argc) {
fprintf(stderr, "Missing action for button %s\n", optarg);
return EXIT_FAILURE;
}
struct swaynag_button *button;
button = calloc(sizeof(struct swaynag_button), 1);
button->text = strdup(optarg);
button->type = SWAYNAG_ACTION_COMMAND;
button->action = strdup(argv[optind]);
list_add(swaynag->buttons, button);
}
optind++;
break;
case 'c': // Config
if (config) {
*config = strdup(optarg);
}
break;
case 'd': // Debug
if (debug) {
*debug = true;
}
break;
case 'e': // Edge
if (swaynag) {
if (strcmp(optarg, "top") == 0) {
swaynag->anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
| ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
} else if (strcmp(optarg, "bottom") == 0) {
swaynag->anchors = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM
| ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
| ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
} else {
fprintf(stderr, "Invalid edge: %s\n", optarg);
return EXIT_FAILURE;
}
}
break;
case 'f': // Font
if (swaynag) {
free(swaynag->font);
swaynag->font = strdup(optarg);
}
break;
case 'l': // Detailed Message
if (swaynag) {
free(swaynag->details.message);
swaynag->details.message = read_from_stdin();
swaynag->details.button_up.text = strdup("");
swaynag->details.button_down.text = strdup("");
}
break;
case 'L': // Detailed Button Text
if (swaynag) {
free(swaynag->details.button_details.text);
swaynag->details.button_details.text = strdup(optarg);
}
break;
case 'm': // Message
if (swaynag) {
free(swaynag->message);
swaynag->message = strdup(optarg);
}
break;
case 'o': // Output
if (swaynag) {
free(swaynag->output.name);
swaynag->output.name = strdup(optarg);
}
break;
case 's': // Dismiss Button Text
if (swaynag) {
struct swaynag_button *button_close;
button_close = swaynag->buttons->items[0];
free(button_close->text);
button_close->text = strdup(optarg);
}
break;
case 't': // Type
if (swaynag) {
swaynag->type = swaynag_type_get(types, optarg);
if (!swaynag->type) {
fprintf(stderr, "Unknown type %s\n", optarg);
return EXIT_FAILURE;
}
}
break;
case 'v': // Version
fprintf(stdout, "swaynag version " SWAY_VERSION "\n");
return -1;
default: // Help or unknown flag
fprintf(c == 'h' ? stdout : stderr, "%s", usage);
return -1;
}
}
return 0;
}
static bool file_exists(const char *path) {
return path && access(path, R_OK) != -1;
}
char *swaynag_get_config_path(void) {
static const char *config_paths[] = {
"$HOME/.swaynag/config",
"$XDG_CONFIG_HOME/swaynag/config",
SYSCONFDIR "/swaynag/config",
};
if (!getenv("XDG_CONFIG_HOME")) {
char *home = getenv("HOME");
char *config_home = malloc(strlen(home) + strlen("/.config") + 1);
if (!config_home) {
wlr_log(WLR_ERROR, "Unable to allocate $HOME/.config");
} else {
strcpy(config_home, home);
strcat(config_home, "/.config");
setenv("XDG_CONFIG_HOME", config_home, 1);
wlr_log(WLR_DEBUG, "Set XDG_CONFIG_HOME to %s", config_home);
free(config_home);
}
}
wordexp_t p;
char *path;
for (size_t i = 0; i < sizeof(config_paths) / sizeof(char *); ++i) {
if (wordexp(config_paths[i], &p, 0) == 0) {
path = strdup(p.we_wordv[0]);
wordfree(&p);
if (file_exists(path)) {
return path;
}
free(path);
}
}
return NULL;
}
int swaynag_load_config(char *path, struct swaynag *swaynag, list_t *types) {
FILE *config = fopen(path, "r");
if (!config) {
fprintf(stderr, "Failed to read config. Running without it.\n");
return 0;
}
struct swaynag_type *type = NULL;
char *line;
int line_number = 0;
while (!feof(config)) {
line = read_line(config);
if (!line) {
continue;
}
line_number++;
if (line[0] == '#') {
free(line);
continue;
}
if (strlen(line) == 0) {
free(line);
continue;
}
if (line[0] == '[') {
char *close = strchr(line, ']');
if (!close) {
free(line);
fclose(config);
fprintf(stderr, "Closing bracket not found on line %d\n",
line_number);
return 1;
}
char *name = calloc(1, close - line);
strncat(name, line + 1, close - line - 1);
type = swaynag_type_get(types, name);
if (!type) {
type = calloc(1, sizeof(struct swaynag_type));
type->name = strdup(name);
list_add(types, type);
}
free(name);
} else {
char flag[strlen(line) + 3];
sprintf(flag, "--%s", line);
char *argv[] = {"swaynag", flag};
int result;
if (type) {
result = swaynag_parse_type(2, argv, type);
} else {
result = swaynag_parse_options(2, argv, swaynag, types,
NULL, NULL);
}
if (result != 0) {
free(line);
fclose(config);
return result;
}
}
free(line);
}
fclose(config);
return 0;
}