diff options
Diffstat (limited to 'merge-recursive.c')
| -rw-r--r-- | merge-recursive.c | 57 |
1 files changed, 54 insertions, 3 deletions
diff --git a/merge-recursive.c b/merge-recursive.c index df90be44a..aadd48c4f 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -644,7 +644,9 @@ static int merge_3way(struct merge_options *o, merge_status = ll_merge(result_buf, a->path, &orig, base_name, &src1, name1, &src2, name2, - (!!o->call_depth) | (favor << 1)); + ((o->call_depth ? LL_OPT_VIRTUAL_ANCESTOR : 0) | + (o->renormalize ? LL_OPT_RENORMALIZE : 0) | + create_ll_flag(favor))); free(name1); free(name2); @@ -1062,6 +1064,53 @@ static unsigned char *stage_sha(const unsigned char *sha, unsigned mode) return (is_null_sha1(sha) || mode == 0) ? NULL: (unsigned char *)sha; } +static int read_sha1_strbuf(const unsigned char *sha1, struct strbuf *dst) +{ + void *buf; + enum object_type type; + unsigned long size; + buf = read_sha1_file(sha1, &type, &size); + if (!buf) + return error("cannot read object %s", sha1_to_hex(sha1)); + if (type != OBJ_BLOB) { + free(buf); + return error("object %s is not a blob", sha1_to_hex(sha1)); + } + strbuf_attach(dst, buf, size, size + 1); + return 0; +} + +static int blob_unchanged(const unsigned char *o_sha, + const unsigned char *a_sha, + int renormalize, const char *path) +{ + struct strbuf o = STRBUF_INIT; + struct strbuf a = STRBUF_INIT; + int ret = 0; /* assume changed for safety */ + + if (sha_eq(o_sha, a_sha)) + return 1; + if (!renormalize) + return 0; + + assert(o_sha && a_sha); + if (read_sha1_strbuf(o_sha, &o) || read_sha1_strbuf(a_sha, &a)) + goto error_return; + /* + * Note: binary | is used so that both renormalizations are + * performed. Comparison can be skipped if both files are + * unchanged since their sha1s have already been compared. + */ + if (renormalize_buffer(path, o.buf, o.len, &o) | + renormalize_buffer(path, a.buf, o.len, &a)) + ret = (o.len == a.len && !memcmp(o.buf, a.buf, o.len)); + +error_return: + strbuf_release(&o); + strbuf_release(&a); + return ret; +} + /* Per entry merge function */ static int process_entry(struct merge_options *o, const char *path, struct stage_data *entry) @@ -1071,6 +1120,7 @@ static int process_entry(struct merge_options *o, print_index_entry("\tpath: ", entry); */ int clean_merge = 1; + int normalize = o->renormalize; unsigned o_mode = entry->stages[1].mode; unsigned a_mode = entry->stages[2].mode; unsigned b_mode = entry->stages[3].mode; @@ -1082,8 +1132,8 @@ static int process_entry(struct merge_options *o, if (o_sha && (!a_sha || !b_sha)) { /* Case A: Deleted in one */ if ((!a_sha && !b_sha) || - (sha_eq(a_sha, o_sha) && !b_sha) || - (!a_sha && sha_eq(b_sha, o_sha))) { + (!b_sha && blob_unchanged(o_sha, a_sha, normalize, path)) || + (!a_sha && blob_unchanged(o_sha, b_sha, normalize, path))) { /* Deleted in both or deleted in one and * unchanged in the other */ if (a_sha) @@ -1525,6 +1575,7 @@ void init_merge_options(struct merge_options *o) o->buffer_output = 1; o->diff_rename_limit = -1; o->merge_rename_limit = -1; + o->renormalize = 0; git_config(merge_recursive_config, o); if (getenv("GIT_MERGE_VERBOSITY")) o->verbosity = |