add configuration file
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54f87146c3
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@ -12,3 +12,4 @@ test/
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build/
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.lvimrc
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wayland-*-protocol.*
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wlr-example.ini
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@ -1,86 +1,88 @@
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#ifndef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200809L
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#endif
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#include <stdlib.h>
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#include <limits.h>
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#include <getopt.h>
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#include <string.h>
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#include <unistd.h>
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#include <wlr/util/log.h>
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#include "shared.h"
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#include "config.h"
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#include "ini.h"
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static void usage(const char *name, int ret) {
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fprintf(stderr,
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"usage: %s [-d <name> [-r <rotation> | -f]]*\n"
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"usage: %s [-C <FILE>]\n"
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"\n"
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" -o <output> The name of the DRM display. e.g. DVI-I-1.\n"
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" -r <rotation> The rotation counter clockwise. Valid values are 90, 180, 270.\n"
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" -x <position> The X-axis coordinate position of this output in the layout.\n"
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" -y <position> The Y-axis coordinate position of this output in the layout.\n"
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" -f Flip the output along the vertical axis.\n", name);
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" -C <FILE> Path to the configuration file (default: wlr-example.ini).\n"
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" See `examples/wlr-example.ini.example` for config file documentation.\n", name);
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exit(ret);
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}
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static const char *output_prefix = "output:";
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static int config_ini_handler(void *user, const char *section, const char *name, const char *value) {
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struct example_config *config = user;
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if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
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const char *output_name = section + strlen(output_prefix);
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struct output_config *oc;
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bool found = false;
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wl_list_for_each(oc, &config->outputs, link) {
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if (strcmp(oc->name, output_name) == 0) {
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found = true;
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break;
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}
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}
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if (!found) {
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oc = calloc(1, sizeof(struct output_config));
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oc->name = strdup(output_name);
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oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
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wl_list_insert(&config->outputs, &oc->link);
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}
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if (strcmp(name, "x") == 0) {
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oc->x = strtol(value, NULL, 10);
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} else if (strcmp(name, "y") == 0) {
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oc->y = strtol(value, NULL, 10);
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} else if (strcmp(name, "rotate") == 0) {
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if (strcmp(value, "90") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_90;
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} else if (strcmp(value, "180") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_180;
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} else if (strcmp(value, "270") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_270;
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} else if (strcmp(value, "flipped") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED;
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} else if (strcmp(value, "flipped-90") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
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} else if (strcmp(value, "flipped-180") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
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} else if (strcmp(value, "flipped-270") == 0) {
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oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
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} else {
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wlr_log(L_ERROR, "got unknown transform value: %s", value);
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}
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}
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} else {
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wlr_log(L_ERROR, "got unknown config section: %s", section);
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}
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return 1;
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}
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struct example_config *parse_args(int argc, char *argv[]) {
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struct example_config *config = calloc(1, sizeof(struct example_config));
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wl_list_init(&config->outputs);
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struct output_config *oc = NULL;
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int c;
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while ((c = getopt(argc, argv, "o:r:x:y:fh")) != -1) {
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while ((c = getopt(argc, argv, "C:h")) != -1) {
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switch (c) {
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case 'o':
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oc = calloc(1, sizeof(*oc));
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oc->name = optarg;
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oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
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wl_list_insert(&config->outputs, &oc->link);
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break;
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case 'r':
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if (!oc) {
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fprintf(stderr, "You must specify an output first\n");
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usage(argv[0], 1);
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}
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if (oc->transform != WL_OUTPUT_TRANSFORM_NORMAL
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&& oc->transform != WL_OUTPUT_TRANSFORM_FLIPPED) {
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fprintf(stderr, "Rotation for %s already specified\n", oc->name);
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usage(argv[0], 1);
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}
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if (strcmp(optarg, "90") == 0) {
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oc->transform += WL_OUTPUT_TRANSFORM_90;
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} else if (strcmp(optarg, "180") == 0) {
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oc->transform += WL_OUTPUT_TRANSFORM_180;
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} else if (strcmp(optarg, "270") == 0) {
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oc->transform += WL_OUTPUT_TRANSFORM_270;
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} else {
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fprintf(stderr, "Invalid rotation '%s'\n", optarg);
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usage(argv[0], 1);
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}
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break;
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case 'x':
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if (!oc) {
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fprintf(stderr, "You must specify an output first\n");
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usage(argv[0], 1);
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}
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oc->x = strtol(optarg, NULL, 0);
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break;
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case 'y':
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if (!oc) {
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fprintf(stderr, "You must specify an output first\n");
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usage(argv[0], 1);
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}
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oc->y = strtol(optarg, NULL, 0);
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break;
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case 'f':
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if (!oc) {
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fprintf(stderr, "You must specify an output first\n");
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usage(argv[0], 1);
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}
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if (oc->transform >= WL_OUTPUT_TRANSFORM_FLIPPED) {
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fprintf(stderr, "Flip for %s already specified\n", oc->name);
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usage(argv[0], 1);
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}
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oc->transform += WL_OUTPUT_TRANSFORM_FLIPPED;
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case 'C':
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config->config_path = strdup(optarg);
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break;
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case 'h':
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case '?':
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@ -88,14 +90,44 @@ struct example_config *parse_args(int argc, char *argv[]) {
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}
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}
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if (!config->config_path) {
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// get the config path from the current directory
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char cwd[1024];
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if (getcwd(cwd, sizeof(cwd)) != NULL) {
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char buf[1024];
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sprintf(buf, "%s/%s", cwd, "wlr-example.ini");
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config->config_path = strdup(buf);
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} else {
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wlr_log(L_ERROR, "could not get cwd");
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exit(1);
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}
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}
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int result = ini_parse(config->config_path, config_ini_handler, config);
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if (result == -1) {
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wlr_log(L_ERROR, "Could not find config file at %s", config->config_path);
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exit(1);
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} else if (result == -2) {
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wlr_log(L_ERROR, "Could not allocate memory to parse config file");
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exit(1);
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} else if (result != 0) {
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wlr_log(L_ERROR, "Could not parse config file");
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exit(1);
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}
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return config;
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}
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void example_config_destroy(struct example_config *config) {
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struct output_config *oc, *tmp = NULL;
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wl_list_for_each_safe(oc, tmp, &config->outputs, link) {
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free(oc->name);
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free(oc);
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}
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if (config->config_path) {
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free(config->config_path);
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}
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free(config);
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}
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@ -14,6 +14,7 @@ struct output_config {
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struct example_config {
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struct wl_list outputs;
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char *config_path;
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};
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struct example_config *parse_args(int argc, char *argv[]);
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@ -0,0 +1,33 @@
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# Configuration
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# -------------
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# Some examples will read a configuration file. Not all examples will use all of
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# the configuration options. The configuration file will be loaded from
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# `wlr-example.ini` from the current directory or the path can be specified by the
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# `-C` option given on the command line.
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#
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# Output configuration
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# ~~~~~~~~~~~~~~~~~~~~
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# Each output is specified in a section named [output:{NAME}] where NAME is the
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# drm name for this output.
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#
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# Value "x" specifies the x-coordinate in the output layout.
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#
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# Value "y" specifies the y-coordinate in the output layout.
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#
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# Value "rotate" specifies output rotation and can be 90, 180, 270, flipped,
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# flipped-90, flipped-180, or flipped-270
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[output:HDMI-A-1]
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x=3000
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y=0
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rotate=90
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[output:DP-1]
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x=0
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y=0
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rotate=270
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[output:DVI-D-1]
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x=1080
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y=232
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# vim:filetype=dosini
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