// ecrire la piste audio
int write_cdi_audio_track(FILE *cdi) {
unsigned char* buf;
if (cdi == NULL) return 1;
// ecrire premier secteur audio
write_null_block(cdi, cdi_start_file_header);
// ecrire la piste audio elle même
write_null_block(cdi, cdi_audio_track_total_size);
return 0;
}
void update_files_from_archive(int number_of_argument, char** files) {
int i = first_argument_position;
FILE* archive = fopen(files[i], "r+");
errno = 0;
if(archive != NULL && errno == 0) {
erase_ending_null_block(archive, files[i]);
fclose(archive);
archive = NULL;
errno = 0;
i++;
}
else
goto error;
if(VERBOSE_FLAG)
printf("Mise à jour de fichier(s) de l'archive '%s' en cours...\n",
files[first_argument_position]);
do {
archive = fopen(files[first_argument_position], "r+");
if(archive != NULL && errno == 0) {
errno = 0;
FILE_HEADER new_file_header;
build_ustar_header_from_file(&new_file_header, files[i]);
int file_position = file_is_present(new_file_header.name,
new_file_header.prefix,
archive);
if(file_position != -1) {
fseek(archive, file_position, SEEK_SET);
FILE_HEADER current_file_header;
build_ustar_header_from_archive(¤t_file_header,
archive);
if( atoi(current_file_header.mtime) <
atoi(new_file_header.mtime) ) {
FILE* new_file = fopen(files[i], "r");
if(new_file != NULL && errno == 0) {
delete_file(file_position, archive,
files[first_argument_position]);
if(archive != NULL) {
fseek(archive, 0, SEEK_END);
add_file(&new_file_header, new_file, archive);
}
else
goto error;
fclose(new_file);
new_file = NULL;
if(VERBOSE_FLAG)
printf("'%s' a été mis à jour.\n", files[i]);
}
else {
fprintf(stderr, "%s '%s' : %s\n", OPENING_ERR,
files[i], strerror(errno));
fprintf(stderr, "%s '%s'\n", UPDATE_ERR, files[i]);
}
}
else
if(VERBOSE_FLAG)
printf("'%s' est déjà à jour.\n", files[i]);
}
else
fprintf(stderr, "%s: %s\n", FILE_NOT_FOUND_ERR, files[i]);
}
else
goto error;
i++;
if(i == number_of_argument)
write_null_block(archive);
fclose(archive);
archive = NULL;
} while(i < number_of_argument);
// Here is a jump in case of an error during opening the archive
error:
// Avoid a wrong error display at the end of the function
if(i != number_of_argument)
fprintf(stderr, "%s '%s' : %s\n", OPENING_ERR, files[i],
strerror(errno));
}
void create_archive_from_files(int number_of_arguments, char** files) {
FILE* archive = NULL;
int i = first_argument_position;
errno = 0;
// If the user wants to create the archive file so the first argument is
// the name of the archive.
if(MAKE_ARCHIVE_FLAG) {
archive = fopen(files[first_argument_position], "w");
if(archive == NULL && errno != 0)
goto error;
i++;
}
do {
errno = 0;
FILE* current_file = fopen(files[i], "r");
if(current_file == NULL && errno != 0)
goto error;
FILE_HEADER header;
build_ustar_header_from_file(&header, files[i]);
size_t filesize = oct2dec(header.size);
char* buffer = malloc(filesize);
memset(buffer, 0, filesize);
fread(buffer, filesize, 1, current_file);
if(MAKE_ARCHIVE_FLAG) {
write_header_to_archive(&header, archive);
fwrite(buffer, filesize, 1, archive);
unsigned int space_needed = calculate_number_of_block(filesize);
space_needed *= BLOCK_SIZE;
complete_current_block(filesize, space_needed, archive);
if(VERBOSE_FLAG)
printf("'%s' a été archivé.\n", files[i]);
}
else {
printf_header(&header);
printf("%.*s\n", (int)filesize, buffer);
}
free(buffer);
buffer = NULL;
fclose(current_file);
current_file = NULL;
i++;
} while(i < number_of_arguments);
// Write an ending null block at the end of the archive
if(MAKE_ARCHIVE_FLAG) {
write_null_block(archive);
fclose(archive);
archive = NULL;
}
// Here is a jump in case of an error during opening the archive
error:
// Avoid a wrong error display at the end of the function
if(i != number_of_arguments)
fprintf(stderr, "%s '%s' : %s\n", OPENING_ERR, files[i],
strerror(errno));
}
