write.c

#define _POSIX_C_SOURCE 200809L
#define _DEFAULT_SOURCE

#include <lektor/mkv.h>
#include <pcre.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/wait.h>

static const char *METADATA_TEMPLATE =
    "   <?xml version=\"1.0\" encoding=\"UTF-8\"?>  "
    "   <Tags>                                      "
    "   <Tag>                                       "
    "     <Targets>                                 "
    "       <TargetTypeValue>70</TargetTypeValue>   "
    "     </Targets>                                "
    "     <Simple>                                  "
    "       <Name>TITLE</Name>                      "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "   </Tag>                                      "
    "   <Tag>                                       "
    "     <Simple>                                  "
    "       <Name>TITLE</Name>                      "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "     <Simple>                                  "
    "       <Name>CONTENT_TYPE</Name>               "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "     <Simple>                                  "
    "       <Name>ADDRESS</Name>                    "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "     <Simple>                                  "
    "       <Name>ARTIST</Name>                     "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "     <Simple>                                  "
    "       <Name>GENRE</Name>                      "
    "       <String>%s</String>                     "
    "     </Simple>                                 "
    "     <Simple>                                  "
    "       <Name>TRACK</Name>                      "
    "       <String>%d</String>                     "
    "     </Simple>                                 "
    "   </Tag>                                      "
    "   </Tags>                                     ";

static bool
mkvpropedit__(const char *const args[])
{
    pid_t pid;
    int wstatus, status, fd;

    if ((pid = fork()) == 0) {
        if ((fd = open("/dev/null", O_WRONLY | O_TRUNC)) < 0) {
            fprintf(stderr, " ! call_mkvpropedit: can't to open /dev/null in O_WRONLY O_TRUNC\n");
            return false;
        }

        if (dup2(fd, 1) < 0) {