amar_t *
amar_new(
int fd,
mode_t mode,
GError **error)
{
amar_t *archive = malloc(sizeof(amar_t));
assert(archive != NULL);
/* make some sanity checks first */
g_assert(fd >= 0);
g_assert(mode == O_RDONLY || mode == O_WRONLY);
archive->fd = fd;
archive->mode = mode;
archive->maxfilenum = 0;
archive->position = 0;
archive->seekable = TRUE; /* assume seekable until lseek() fails */
archive->files = g_hash_table_new(g_int_hash, g_int_equal);
archive->buf = NULL;
if (mode == O_WRONLY) {
archive->buf = g_malloc(WRITE_BUFFER_SIZE);
archive->buf_size = WRITE_BUFFER_SIZE;
}
archive->buf_len = 0;
if (mode == O_WRONLY) {
/* preformat a header with our version number */
bzero(archive->hdr.magic, HEADER_SIZE);
snprintf(archive->hdr.magic, HEADER_SIZE,
HEADER_MAGIC " %d", HEADER_VERSION);
/* and write it out to start the file */
if (!write_header(archive, error)) {
amar_close(archive, NULL); /* flushing buffer won't fail */
return NULL;
}
}
return archive;
}
static void
do_create(char *opt_file, int opt_verbose, int argc, char **argv)
{
FILE *output = stdout;
amar_t *archive;
amar_file_t *file;
amar_attr_t *attribute;
GError *error = NULL;
int i, fd_out, fd_in;
off_t filesize = 0;
if (opt_file != NULL && strcmp(opt_file,"-") != 0) {
fd_out = open(opt_file, O_CREAT|O_WRONLY|O_TRUNC, 0660);
if (fd_out <= 0) {
error("open of '%s' failed: %s\n", opt_file, strerror(errno));
}
} else {
fd_out = fileno(stdout);
output = stderr;
}
archive = amar_new(fd_out, O_WRONLY, &error);
if (!archive)
error_exit("amar_new", error);
i = 0;
while (i<argc) {
fd_in = open(argv[i], O_RDONLY);
if (fd_in <= 0) {
g_fprintf(stderr, "open of '%s' failed: %s\n", argv[i], strerror(errno));
i++;
continue;
}
filesize = 0;
file = amar_new_file(archive, argv[i], strlen(argv[i]), NULL, &error);
if (error)
error_exit("amar_new_file", error);
attribute = amar_new_attr(file, AMAR_ATTR_GENERIC_DATA, &error);
if (error)
error_exit("amar_new_attr", error);
filesize += amar_attr_add_data_fd(attribute, fd_in, 1, &error);
if (error)
error_exit("amar_attr_add_data_fd", error);
if (!amar_attr_close(attribute, &error))
error_exit("amar_attr_close", error);
if (!amar_file_close(file, &error))
error_exit("amar_file_close", error);
if (opt_verbose == 1) {
g_fprintf(output,"%s\n", argv[i]);
} else if (opt_verbose > 1) {
g_fprintf(output,"%llu %s\n", (unsigned long long)filesize, argv[i]);
}
close(fd_in);
i++;
}
if (!amar_close(archive, &error))
error_exit("amar_close", error);
close(fd_out);
}