static int parse_bundle_header(int fd, struct bundle_header *header,
const char *report_path)
{
struct strbuf buf = STRBUF_INIT;
int status = 0;
/* The bundle header begins with the signature */
if (strbuf_getwholeline_fd(&buf, fd, '\n') ||
strcmp(buf.buf, bundle_signature)) {
if (report_path)
error("'%s' does not look like a v2 bundle file",
report_path);
status = -1;
goto abort;
}
/* The bundle header ends with an empty line */
while (!strbuf_getwholeline_fd(&buf, fd, '\n') &&
buf.len && buf.buf[0] != '\n') {
unsigned char sha1[20];
int is_prereq = 0;
if (*buf.buf == '-') {
is_prereq = 1;
strbuf_remove(&buf, 0, 1);
}
strbuf_rtrim(&buf);
/*
* Tip lines have object name, SP, and refname.
* Prerequisites have object name that is optionally
* followed by SP and subject line.
*/
if (get_sha1_hex(buf.buf, sha1) ||
(40 <= buf.len && !isspace(buf.buf[40])) ||
(!is_prereq && buf.len <= 40)) {
if (report_path)
error("unrecognized header: %s%s (%d)",
(is_prereq ? "-" : ""), buf.buf, (int)buf.len);
status = -1;
break;
} else {
if (is_prereq)
add_to_ref_list(sha1, "", &header->prerequisites);
else
add_to_ref_list(sha1, buf.buf + 41, &header->references);
}
}
abort:
if (status) {
close(fd);
fd = -1;
}
strbuf_release(&buf);
return fd;
}
/* returns an fd */
int read_bundle_header(const char *path, struct bundle_header *header)
{
char buffer[1024];
int fd;
long fpos;
FILE *ffd = fopen(path, "rb");
if (!ffd)
return error("could not open '%s'", path);
if (!fgets(buffer, sizeof(buffer), ffd) ||
strcmp(buffer, bundle_signature)) {
fclose(ffd);
return error("'%s' does not look like a v2 bundle file", path);
}
while (fgets(buffer, sizeof(buffer), ffd)
&& buffer[0] != '\n') {
int is_prereq = buffer[0] == '-';
int offset = is_prereq ? 1 : 0;
int len = strlen(buffer);
unsigned char sha1[20];
struct ref_list *list = is_prereq ? &header->prerequisites
: &header->references;
char delim;
if (len && buffer[len - 1] == '\n')
buffer[len - 1] = '\0';
if (get_sha1_hex(buffer + offset, sha1)) {
warning("unrecognized header: %s", buffer);
continue;
}
delim = buffer[40 + offset];
if (!isspace(delim) && (delim != '\0' || !is_prereq))
die ("invalid header: %s", buffer);
add_to_ref_list(sha1, isspace(delim) ?
buffer + 41 + offset : "", list);
}
fpos = ftell(ffd);
fclose(ffd);
fd = open(path, O_RDONLY);
if (fd < 0)
return error("could not open '%s'", path);
lseek(fd, fpos, SEEK_SET);
return fd;
}
