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builtin/apply: make parse_chunk() return a negative integer on error
To libify `git apply` functionality we have to signal errors to the caller instead of die()ing or exit()ing. To do that in a compatible manner with the rest of the error handling in builtin/apply.c, parse_chunk() should return a negative integer instead of calling die() or exit(). As parse_chunk() is called only by apply_patch() which already returns either -1 or -128 when an error happened, let's make it also return -1 or -128. This makes it compatible with what find_header() and parse_binary() already return. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -1996,22 +1996,22 @@ static int use_patch(struct apply_state *state, struct patch *p)
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return !state->has_include;
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}
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/*
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* Read the patch text in "buffer" that extends for "size" bytes; stop
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* reading after seeing a single patch (i.e. changes to a single file).
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* Create fragments (i.e. patch hunks) and hang them to the given patch.
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* Return the number of bytes consumed, so that the caller can call us
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* again for the next patch.
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*
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* Returns:
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* -1 if no header was found or parse_binary() failed,
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* -128 on another error,
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* the number of bytes consumed otherwise,
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* so that the caller can call us again for the next patch.
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*/
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static int parse_chunk(struct apply_state *state, char *buffer, unsigned long size, struct patch *patch)
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{
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int hdrsize, patchsize;
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int offset = find_header(state, buffer, size, &hdrsize, patch);
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if (offset == -128)
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exit(128);
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if (offset < 0)
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return offset;
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@ -2071,8 +2071,10 @@ static int parse_chunk(struct apply_state *state, char *buffer, unsigned long si
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* empty to us here.
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*/
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if ((state->apply || state->check) &&
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(!patch->is_binary && !metadata_changes(patch)))
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die(_("patch with only garbage at line %d"), state->linenr);
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(!patch->is_binary && !metadata_changes(patch))) {
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error(_("patch with only garbage at line %d"), state->linenr);
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return -128;
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}
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}
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return offset + hdrsize + patchsize;
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@ -4455,6 +4457,10 @@ static int apply_patch(struct apply_state *state,
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nr = parse_chunk(state, buf.buf + offset, buf.len - offset, patch);
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if (nr < 0) {
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free_patch(patch);
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if (nr == -128) {
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res = -128;
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goto end;
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}
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break;
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}
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if (state->apply_in_reverse)
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