From 3b6a8db3b03adb118bfafb90bbc710068dbd6d14 Mon Sep 17 00:00:00 2001 From: Ævar Arnfjörð Bjarmason Date: Fri, 1 Oct 2021 11:16:49 +0200 Subject: object-file.c: use "enum" return type for unpack_loose_header() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In a preceding commit we changed and documented unpack_loose_header() from its previous behavior of returning any negative value or zero, to only -1 or 0. Let's add an "enum unpack_loose_header_result" type and use it for these return values, and have the compiler assert that we're exhaustively covering all of them. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- object-file.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) (limited to 'object-file.c') diff --git a/object-file.c b/object-file.c index 59b38aac2b..ade5f33f3c 100644 --- a/object-file.c +++ b/object-file.c @@ -1210,10 +1210,12 @@ void *map_loose_object(struct repository *r, return map_loose_object_1(r, NULL, oid, size); } -int unpack_loose_header(git_zstream *stream, - unsigned char *map, unsigned long mapsize, - void *buffer, unsigned long bufsiz, - struct strbuf *header) +enum unpack_loose_header_result unpack_loose_header(git_zstream *stream, + unsigned char *map, + unsigned long mapsize, + void *buffer, + unsigned long bufsiz, + struct strbuf *header) { int status; @@ -1229,13 +1231,13 @@ int unpack_loose_header(git_zstream *stream, status = git_inflate(stream, 0); obj_read_lock(); if (status < Z_OK) - return -1; + return ULHR_BAD; /* * Check if entire header is unpacked in the first iteration. */ if (memchr(buffer, '\0', stream->next_out - (unsigned char *)buffer)) - return 0; + return ULHR_OK; /* * We have a header longer than MAX_HEADER_LEN. The "header" @@ -1243,7 +1245,7 @@ int unpack_loose_header(git_zstream *stream, * --allow-unknown-type". */ if (!header) - return -1; + return ULHR_BAD; /* * buffer[0..bufsiz] was not large enough. Copy the partial @@ -1264,7 +1266,7 @@ int unpack_loose_header(git_zstream *stream, stream->next_out = buffer; stream->avail_out = bufsiz; } while (status != Z_STREAM_END); - return -1; + return ULHR_BAD; } static void *unpack_loose_rest(git_zstream *stream, @@ -1429,13 +1431,19 @@ static int loose_object_info(struct repository *r, if (oi->disk_sizep) *oi->disk_sizep = mapsize; - if (unpack_loose_header(&stream, map, mapsize, hdr, sizeof(hdr), - allow_unknown ? &hdrbuf : NULL) < 0) + switch (unpack_loose_header(&stream, map, mapsize, hdr, sizeof(hdr), + allow_unknown ? &hdrbuf : NULL)) { + case ULHR_OK: + break; + case ULHR_BAD: status = error(_("unable to unpack %s header"), oid_to_hex(oid)); - if (status < 0) - ; /* Do nothing */ - else if (hdrbuf.len) { + break; + } + + if (status < 0) { + /* Do nothing */ + } else if (hdrbuf.len) { if ((status = parse_loose_header(hdrbuf.buf, oi, flags)) < 0) status = error(_("unable to parse %s header with --allow-unknown-type"), oid_to_hex(oid)); -- cgit 1.2.3-korg