Tony Crisci
7 years ago
parent
98f4cdfccb
commit
54f87146c3
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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 "shared.h"
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#include "config.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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"\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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exit(ret);
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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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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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break;
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case 'h':
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case '?':
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usage(argv[0], c != 'h');
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}
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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);
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}
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free(config);
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}
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struct wlr_output_layout *configure_layout(struct example_config *config, struct wl_list *outputs) {
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struct wlr_output_layout *layout = wlr_output_layout_init();
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int max_x = INT_MIN;
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int max_x_y = INT_MIN; // y value for the max_x output
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// first add all the configured outputs
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struct output_state *output;
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wl_list_for_each(output, outputs, link) {
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struct output_config *conf;
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wl_list_for_each(conf, &config->outputs, link) {
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if (strcmp(conf->name, output->output->name) == 0) {
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wlr_output_layout_add(layout, output->output,
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conf->x, conf->y);
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wlr_output_transform(output->output, conf->transform);
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int width, height;
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wlr_output_effective_resolution(output->output, &width, &height);
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if (conf->x + width > max_x) {
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max_x = conf->x + width;
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max_x_y = conf->y;
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}
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break;
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}
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}
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}
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if (max_x == INT_MIN) {
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// couldn't find a configured output
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max_x = 0;
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max_x_y = 0;
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}
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// now add all the other configured outputs in a sensible position
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wl_list_for_each(output, outputs, link) {
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if (wlr_output_layout_get(layout, output->output)) {
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continue;
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}
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wlr_output_layout_add(layout, output->output, max_x, max_x_y);
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int width, height;
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wlr_output_effective_resolution(output->output, &width, &height);
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max_x += width;
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}
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return layout;
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}
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@ -0,0 +1,25 @@
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#ifndef _EXAMPLE_CONFIG_H
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#define _EXAMPLE_CONFIG_H
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#ifndef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 200112L
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#endif
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#include <wlr/types/wlr_output_layout.h>
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struct output_config {
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char *name;
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enum wl_output_transform transform;
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int x, y;
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struct wl_list link;
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};
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struct example_config {
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struct wl_list outputs;
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};
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struct example_config *parse_args(int argc, char *argv[]);
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void example_config_destroy(struct example_config *config);
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struct wlr_output_layout *configure_layout(struct example_config *config,
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struct wl_list *outputs);
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#endif
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@ -0,0 +1,195 @@
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/* inih -- simple .INI file parser
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inih is released under the New BSD license (see LICENSE.txt). Go to the project
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home page for more info:
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https://github.com/benhoyt/inih
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*/
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#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
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#define _CRT_SECURE_NO_WARNINGS
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#endif
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include "ini.h"
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#if !INI_USE_STACK
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#include <stdlib.h>
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#endif
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#define MAX_SECTION 50
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#define MAX_NAME 50
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/* Strip whitespace chars off end of given string, in place. Return s. */
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static char* rstrip(char* s)
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{
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char* p = s + strlen(s);
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while (p > s && isspace((unsigned char)(*--p)))
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*p = '\0';
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return s;
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}
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/* Return pointer to first non-whitespace char in given string. */
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static char* lskip(const char* s)
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{
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while (*s && isspace((unsigned char)(*s)))
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s++;
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return (char*)s;
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}
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/* Return pointer to first char (of chars) or inline comment in given string,
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or pointer to null at end of string if neither found. Inline comment must
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be prefixed by a whitespace character to register as a comment. */
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static char* find_chars_or_comment(const char* s, const char* chars)
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{
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#if INI_ALLOW_INLINE_COMMENTS
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int was_space = 0;
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while (*s && (!chars || !strchr(chars, *s)) &&
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!(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
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was_space = isspace((unsigned char)(*s));
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s++;
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}
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#else
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while (*s && (!chars || !strchr(chars, *s))) {
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s++;
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}
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#endif
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return (char*)s;
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}
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/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
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static char* strncpy0(char* dest, const char* src, size_t size)
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{
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strncpy(dest, src, size);
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dest[size - 1] = '\0';
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return dest;
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}
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/* See documentation in header file. */
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int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
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void* user)
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{
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/* Uses a fair bit of stack (use heap instead if you need to) */
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#if INI_USE_STACK
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char line[INI_MAX_LINE];
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#else
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char* line;
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#endif
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char section[MAX_SECTION] = "";
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char prev_name[MAX_NAME] = "";
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char* start;
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char* end;
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char* name;
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char* value;
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int lineno = 0;
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int error = 0;
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#if !INI_USE_STACK
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line = (char*)malloc(INI_MAX_LINE);
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if (!line) {
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return -2;
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}
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#endif
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/* Scan through stream line by line */
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while (reader(line, INI_MAX_LINE, stream) != NULL) {
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lineno++;
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start = line;
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#if INI_ALLOW_BOM
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if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
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(unsigned char)start[1] == 0xBB &&
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(unsigned char)start[2] == 0xBF) {
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start += 3;
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}
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#endif
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start = lskip(rstrip(start));
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if (*start == ';' || *start == '#') {
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/* Per Python configparser, allow both ; and # comments at the
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start of a line */
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}
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#if INI_ALLOW_MULTILINE
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else if (*prev_name && *start && start > line) {
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/* Non-blank line with leading whitespace, treat as continuation
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of previous name's value (as per Python configparser). */
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if (!handler(user, section, prev_name, start) && !error)
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error = lineno;
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}
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#endif
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else if (*start == '[') {
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/* A "[section]" line */
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end = find_chars_or_comment(start + 1, "]");
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if (*end == ']') {
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*end = '\0';
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strncpy0(section, start + 1, sizeof(section));
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*prev_name = '\0';
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}
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else if (!error) {
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/* No ']' found on section line */
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error = lineno;
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}
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}
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else if (*start) {
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/* Not a comment, must be a name[=:]value pair */
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end = find_chars_or_comment(start, "=:");
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if (*end == '=' || *end == ':') {
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*end = '\0';
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name = rstrip(start);
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value = lskip(end + 1);
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#if INI_ALLOW_INLINE_COMMENTS
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end = find_chars_or_comment(value, NULL);
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if (*end)
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*end = '\0';
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#endif
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rstrip(value);
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/* Valid name[=:]value pair found, call handler */
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strncpy0(prev_name, name, sizeof(prev_name));
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if (!handler(user, section, name, value) && !error)
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error = lineno;
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memset(value, 0, strlen(value));
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}
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else if (!error) {
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/* No '=' or ':' found on name[=:]value line */
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error = lineno;
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}
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}
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#if INI_STOP_ON_FIRST_ERROR
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if (error)
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break;
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#endif
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}
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#if !INI_USE_STACK
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free(line);
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#endif
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return error;
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}
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/* See documentation in header file. */
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int ini_parse_file(FILE* file, ini_handler handler, void* user)
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{
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return ini_parse_stream((ini_reader)fgets, file, handler, user);
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}
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/* See documentation in header file. */
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int ini_parse(const char* filename, ini_handler handler, void* user)
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{
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FILE* file;
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int error;
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file = fopen(filename, "r");
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if (!file)
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return -1;
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error = ini_parse_file(file, handler, user);
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fclose(file);
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return error;
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}
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@ -0,0 +1,93 @@
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/* inih -- simple .INI file parser
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inih is released under the New BSD license (see LICENSE.txt). Go to the project
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home page for more info:
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https://github.com/benhoyt/inih
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*/
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#ifndef __INI_H__
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#define __INI_H__
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/* Make this header file easier to include in C++ code */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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/* Typedef for prototype of handler function. */
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typedef int (*ini_handler)(void* user, const char* section,
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const char* name, const char* value);
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/* Typedef for prototype of fgets-style reader function. */
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typedef char* (*ini_reader)(char* str, int num, void* stream);
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/* Parse given INI-style file. May have [section]s, name=value pairs
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(whitespace stripped), and comments starting with ';' (semicolon). Section
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is "" if name=value pair parsed before any section heading. name:value
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pairs are also supported as a concession to Python's configparser.
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For each name=value pair parsed, call handler function with given user
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||||||
|
pointer as well as section, name, and value (data only valid for duration
|
||||||
|
of handler call). Handler should return nonzero on success, zero on error.
|
||||||
|
|
||||||
|
Returns 0 on success, line number of first error on parse error (doesn't
|
||||||
|
stop on first error), -1 on file open error, or -2 on memory allocation
|
||||||
|
error (only when INI_USE_STACK is zero).
|
||||||
|
*/
|
||||||
|
int ini_parse(const char* filename, ini_handler handler, void* user);
|
||||||
|
|
||||||
|
/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
|
||||||
|
close the file when it's finished -- the caller must do that. */
|
||||||
|
int ini_parse_file(FILE* file, ini_handler handler, void* user);
|
||||||
|
|
||||||
|
/* Same as ini_parse(), but takes an ini_reader function pointer instead of
|
||||||
|
filename. Used for implementing custom or string-based I/O. */
|
||||||
|
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
|
||||||
|
void* user);
|
||||||
|
|
||||||
|
/* Nonzero to allow multi-line value parsing, in the style of Python's
|
||||||
|
configparser. If allowed, ini_parse() will call the handler with the same
|
||||||
|
name for each subsequent line parsed. */
|
||||||
|
#ifndef INI_ALLOW_MULTILINE
|
||||||
|
#define INI_ALLOW_MULTILINE 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
|
||||||
|
the file. See http://code.google.com/p/inih/issues/detail?id=21 */
|
||||||
|
#ifndef INI_ALLOW_BOM
|
||||||
|
#define INI_ALLOW_BOM 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Nonzero to allow inline comments (with valid inline comment characters
|
||||||
|
specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
|
||||||
|
Python 3.2+ configparser behaviour. */
|
||||||
|
#ifndef INI_ALLOW_INLINE_COMMENTS
|
||||||
|
#define INI_ALLOW_INLINE_COMMENTS 1
|
||||||
|
#endif
|
||||||
|
#ifndef INI_INLINE_COMMENT_PREFIXES
|
||||||
|
#define INI_INLINE_COMMENT_PREFIXES ";"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Nonzero to use stack, zero to use heap (malloc/free). */
|
||||||
|
#ifndef INI_USE_STACK
|
||||||
|
#define INI_USE_STACK 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Stop parsing on first error (default is to keep parsing). */
|
||||||
|
#ifndef INI_STOP_ON_FIRST_ERROR
|
||||||
|
#define INI_STOP_ON_FIRST_ERROR 0
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Maximum line length for any line in INI file. */
|
||||||
|
#ifndef INI_MAX_LINE
|
||||||
|
#define INI_MAX_LINE 2000
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* __INI_H__ */
|
||||||
Loading…
Reference in new issue