mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
125 lines
4 KiB
C
125 lines
4 KiB
C
/* Simple Plugin API
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*
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* Copyright © 2021 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <spa/utils/result.h>
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#include <spa/utils/json.h>
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static int dump(FILE *file, int indent, struct spa_json *it, const char *value, int len)
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{
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struct spa_json sub;
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int count = 0;
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if (spa_json_is_array(value, len)) {
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fprintf(file, "[");
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spa_json_enter(it, &sub);
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while ((len = spa_json_next(&sub, &value)) > 0) {
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fprintf(file, "%s\n%*s", count++ > 0 ? "," : "",
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indent+2, "");
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dump(file, indent+2, &sub, value, len);
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}
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fprintf(file, "%s%*s]", count > 0 ? "\n" : "",
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count > 0 ? indent : 0, "");
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} else if (spa_json_is_object(value, len)) {
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fprintf(file, "{");
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spa_json_enter(it, &sub);
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while ((len = spa_json_next(&sub, &value)) > 0) {
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char *q = spa_json_is_string(value, len) ? "" : "\"";
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fprintf(file, "%s\n%*s%s%.*s%s: ", count++ > 0 ? "," : "",
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indent+2, "", q, len, value, q);
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if ((len = spa_json_next(&sub, &value)) <= 0)
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break;
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dump(file, indent+2, &sub, value, len);
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}
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fprintf(file, "%s%*s}", count > 0 ? "\n" : "",
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count > 0 ? indent : 0, "");
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} else if (spa_json_is_string(value, len) ||
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spa_json_is_null(value, len) ||
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spa_json_is_bool(value, len) ||
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spa_json_is_float(value, len)) {
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fprintf(file, "%.*s", len, value);
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} else {
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fprintf(file, "\"%.*s\"", len, value);
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int fd, len, res, exit_code = EXIT_FAILURE;
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void *data;
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struct stat sbuf;
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struct spa_json it;
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const char *value;
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if (argc < 2) {
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fprintf(stderr, "usage: %s <spa-json-file>\n", argv[0]);
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goto error;
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}
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if ((fd = open(argv[1], O_CLOEXEC | O_RDONLY)) < 0) {
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fprintf(stderr, "error opening file '%s': %m\n", argv[1]);
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goto error;
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}
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if (fstat(fd, &sbuf) < 0) {
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fprintf(stderr, "error statting file '%s': %m\n", argv[1]);
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goto error_close;
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}
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if ((data = mmap(NULL, sbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED) {
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fprintf(stderr, "error mmapping file '%s': %m\n", argv[1]);
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goto error_close;
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}
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spa_json_init(&it, data, sbuf.st_size);
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if ((len = spa_json_next(&it, &value)) <= 0) {
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fprintf(stderr, "not a valid file '%s': %s\n", argv[1], spa_strerror(len));
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goto error_unmap;
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}
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if (!spa_json_is_container(value, len)) {
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spa_json_init(&it, data, sbuf.st_size);
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value = "{";
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len = 1;
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}
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if ((res = dump(stdout, 0, &it, value, len)) < 0) {
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fprintf(stderr, "error parsing file '%s': %s\n", argv[1], spa_strerror(res));
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goto error_unmap;
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}
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fprintf(stdout, "\n");
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exit_code = EXIT_SUCCESS;
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error_unmap:
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munmap(data, sbuf.st_size);
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error_close:
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close(fd);
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error:
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return exit_code;
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}
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