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main: add -b,--backend command line option

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This option allows the user to explicitly select the backend to
use. The default is still to auto-detect.
This commit is contained in:
Daniel Eklöf 2019-05-11 10:53:09 +02:00
parent 473802cab8
commit 5eef162d39
4 changed files with 33 additions and 12 deletions
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8
config.c
View file

@ -169,14 +169,14 @@ conf_to_particle(const struct yml_node *node, struct conf_inherit inherited)
}
struct bar *
conf_to_bar(const struct yml_node *bar)
conf_to_bar(const struct yml_node *bar, enum bar_backend backend)
{
if (!conf_verify_bar(bar))
return NULL;
struct bar_config conf = {0};
conf.backend = BAR_BACKEND_AUTO;
struct bar_config conf = {
.backend = backend,
};
/*
* Required attributes

3
config.h
View file

@ -2,12 +2,13 @@
#include "font.h"
#include "yml.h"
#include "bar/bar.h"
struct bar;
struct particle;
bool conf_verify_bar(const struct yml_node *bar);
struct bar *conf_to_bar(const struct yml_node *bar);
struct bar *conf_to_bar(const struct yml_node *bar, enum bar_backend backend);
/*
* Utility functions, for e.g. modules

6
doc/f00bar.1.scd
View file

@ -8,6 +8,12 @@ f00bar - modular status panel for X11 and Wayland
# OPTIONS
*-b, --backend={xcb,wayland,auto}*
Backend to use. The default is *auto*. In this mode, f00bar will
look for the environment variable _WAYLAND\_DISPLAY_, and if
available, use the *Wayland* backend. If not, the *XCB* backend is
used.
*-c, --config=FILE*
Use an alternative configuration file instead of the default one.

28
main.c
View file

@ -82,7 +82,7 @@ get_config_path(void)
}
static struct bar *
load_bar(const char *config_path)
load_bar(const char *config_path, enum bar_backend backend)
{
FILE *conf_file = fopen(config_path, "r");
if (conf_file == NULL) {
@ -105,7 +105,7 @@ load_bar(const char *config_path)
goto out;
}
bar = conf_to_bar(bar_conf);
bar = conf_to_bar(bar_conf, backend);
if (bar == NULL) {
LOG_ERR("%s: failed to load configuration", config_path);
goto out;
@ -124,9 +124,10 @@ print_usage(const char *prog_name)
printf("Usage: %s [OPTION]...\n", prog_name);
printf("\n");
printf("Options:\n");
printf(" -c,--config=FILE alternative configuration file\n"
" -C,--validate verify configuration then quit\n"
" -v,--version print f00sel version and quit\n");
printf(" -b,--backend={xcb,wayland,auto} backend to use (default: auto)\n"
" -c,--config=FILE alternative configuration file\n"
" -C,--validate verify configuration then quit\n"
" -v,--version print f00sel version and quit\n");
}
int
@ -135,6 +136,7 @@ main(int argc, char *const *argv)
setlocale(LC_ALL, "");
static const struct option longopts[] = {
{"backend", required_argument, 0, 'b'},
{"config", required_argument, 0, 'c'},
{"validate", no_argument, 0, 'C'},
{"version", no_argument, 0, 'v'},
@ -144,13 +146,25 @@ main(int argc, char *const *argv)
bool verify_config = false;
char *config_path = NULL;
enum bar_backend backend = BAR_BACKEND_AUTO;
while (true) {
int c = getopt_long(argc, argv, ":c:Cvh", longopts, NULL);
int c = getopt_long(argc, argv, ":b:c:Cvh", longopts, NULL);
if (c == -1)
break;
switch (c) {
case 'b':
if (strcmp(optarg, "xcb") == 0)
backend = BAR_BACKEND_XCB;
else if (strcmp(optarg, "wayland") == 0)
backend = BAR_BACKEND_WAYLAND;
else {
LOG_ERR("%s: invalid backend", optarg);
return EXIT_FAILURE;
}
break;
case 'c': {
struct stat st;
if (stat(optarg, &st) == -1) {
@ -214,7 +228,7 @@ main(int argc, char *const *argv)
}
}
struct bar *bar = load_bar(config_path);
struct bar *bar = load_bar(config_path, backend);
free(config_path);
if (bar == NULL) {