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Accept user-specified config path

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Adds a -c,--config command line option that allows the user to specify
an arbitrary config path.
This commit is contained in:
Kenny Levinsen 2020-09-25 11:41:33 +02:00 committed by Simon Ser
parent acfad026c5
commit 7095bedd25
2 changed files with 46 additions and 3 deletions
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10
kanshi.1.scd
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@ -6,7 +6,15 @@ kanshi - dynamic output configuration
# DESCRIPTION
*kanshi*
*kanshi* [options...]
# OPTIONS
*-h, --help*
Show help message and quit.
*-c, --config* <config>
Specifies a config file.
# SYNOPSIS

39
main.c
View File

@ -1,6 +1,7 @@
#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
@ -453,7 +454,11 @@ static const struct wl_registry_listener registry_listener = {
.global_remove = registry_handle_global_remove,
};
static struct kanshi_config *read_config(void) {
static struct kanshi_config *read_config(const char *config) {
if (config != NULL) {
return parse_config(config);
}
const char config_filename[] = "kanshi/config";
char config_path[PATH_MAX];
const char *xdg_config_home = getenv("XDG_CONFIG_HOME");
@ -472,12 +477,42 @@ static struct kanshi_config *read_config(void) {
return parse_config(config_path);
}
static const char usage[] = "Usage: %s [options...]\n"
" -h, --help Show help message and quit\n"
" -c, --config <path> Path to config file.\n";
static const struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{"config", required_argument, 0, 'c'},
{0},
};
int main(int argc, char *argv[]) {
struct kanshi_config *config = read_config();
char *config_arg = NULL;
int opt;
while ((opt = getopt_long(argc, argv, "hc:", long_options, NULL)) != -1) {
switch (opt) {
case 'c':
free(config_arg);
config_arg = strdup(optarg);
break;
case 'h':
fprintf(stderr, usage, argv[0]);
return EXIT_SUCCESS;
default:
fprintf(stderr, usage, argv[0]);
return EXIT_FAILURE;
}
}
struct kanshi_config *config = read_config(config_arg);
if (config == NULL) {
return EXIT_FAILURE;
}
free(config_arg);
struct wl_display *display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "failed to connect to display\n");