From 8a2fce1895c058945d8e2dbd8cb7456cc7450ad8 Mon Sep 17 00:00:00 2001 From: Miklos Vajna Date: Mon, 25 Aug 2008 16:25:57 +0200 Subject: [PATCH] merge-recursive: introduce merge_options This makes it possible to avoid passing the labels of branches as arguments to merge_recursive(), merge_trees() and merge_recursive_generic(). It also takes care of subtree merge, output buffering, verbosity, and rename limits - these were global variables till now in merge-recursive.c. A new function, named init_merge_options(), is introduced as well, it clears the struct merge_info, then initializes with default values, finally updates the default values based on the config and environment variables. Signed-off-by: Miklos Vajna Signed-off-by: Junio C Hamano --- builtin-checkout.c | 11 +- builtin-merge-recursive.c | 43 ++++---- merge-recursive.c | 265 +++++++++++++++++++++++----------------------- merge-recursive.h | 68 +++++++----- 4 files changed, 205 insertions(+), 182 deletions(-) rewrite merge-recursive.h (70%) diff --git a/builtin-checkout.c b/builtin-checkout.c index b380ad6e80..f3c6b0fad2 100644 --- a/builtin-checkout.c +++ b/builtin-checkout.c @@ -264,6 +264,7 @@ static int merge_working_tree(struct checkout_opts *opts, */ struct tree *result; struct tree *work; + struct merge_options o; if (!opts->merge) return 1; parse_commit(old->commit); @@ -282,13 +283,17 @@ static int merge_working_tree(struct checkout_opts *opts, */ add_files_to_cache(NULL, NULL, 0); - work = write_tree_from_memory(); + init_merge_options(&o); + o.verbosity = 0; + work = write_tree_from_memory(&o); ret = reset_tree(new->commit->tree, opts, 1); if (ret) return ret; - merge_trees(new->commit->tree, work, old->commit->tree, - new->name, "local", &result); + o.branch1 = new->name; + o.branch2 = "local"; + merge_trees(&o, new->commit->tree, work, + old->commit->tree, &result); ret = reset_tree(new->commit->tree, opts, 0); if (ret) return ret; diff --git a/builtin-merge-recursive.c b/builtin-merge-recursive.c index 25f540b4a8..6b534c1a66 100644 --- a/builtin-merge-recursive.c +++ b/builtin-merge-recursive.c @@ -17,32 +17,33 @@ static const char *better_branch_name(const char *branch) int cmd_merge_recursive(int argc, const char **argv, const char *prefix) { - const char *bases[21]; + const unsigned char *bases[21]; unsigned bases_count = 0; int i, failed; - const char *branch1, *branch2; unsigned char h1[20], h2[20]; - int subtree_merge = 0; + struct merge_options o; + struct commit *result; + init_merge_options(&o); if (argv[0]) { int namelen = strlen(argv[0]); if (8 < namelen && !strcmp(argv[0] + namelen - 8, "-subtree")) - subtree_merge = 1; + o.subtree_merge = 1; } - git_config(merge_recursive_config, NULL); - merge_recursive_setup(subtree_merge); if (argc < 4) die("Usage: %s ... -- ...\n", argv[0]); for (i = 1; i < argc; ++i) { - if (!strcmp(argv[i], "--")) { - bases[bases_count] = NULL; + if (!strcmp(argv[i], "--")) break; + if (bases_count < ARRAY_SIZE(bases)-1) { + unsigned char *sha = xmalloc(20); + if (get_sha1(argv[i], sha)) + die("Could not parse object '%s'", argv[i]); + bases[bases_count++] = sha; } - if (bases_count < ARRAY_SIZE(bases)-1) - bases[bases_count++] = argv[i]; else warning("Cannot handle more than %zu bases. " "Ignoring %s.", ARRAY_SIZE(bases)-1, argv[i]); @@ -50,21 +51,21 @@ int cmd_merge_recursive(int argc, const char **argv, const char *prefix) if (argc - i != 3) /* "--" "" "" */ die("Not handling anything other than two heads merge."); - branch1 = argv[++i]; - branch2 = argv[++i]; + o.branch1 = argv[++i]; + o.branch2 = argv[++i]; - if (get_sha1(branch1, h1)) - die("Could not resolve ref '%s'", branch1); - if (get_sha1(branch2, h2)) - die("Could not resolve ref '%s'", branch2); + if (get_sha1(o.branch1, h1)) + die("Could not resolve ref '%s'", o.branch1); + if (get_sha1(o.branch2, h2)) + die("Could not resolve ref '%s'", o.branch2); - branch1 = better_branch_name(branch1); - branch2 = better_branch_name(branch2); + o.branch1 = better_branch_name(o.branch1); + o.branch2 = better_branch_name(o.branch2); - if (merge_recursive_verbosity >= 3) - printf("Merging %s with %s\n", branch1, branch2); + if (o.verbosity >= 3) + printf("Merging %s with %s\n", o.branch1, o.branch2); - failed = merge_recursive_generic(bases, h1, branch1, h2, branch2); + failed = merge_recursive_generic(&o, h1, h2, bases_count, bases, &result); if (failed < 0) return 128; /* die() error code */ return failed; diff --git a/merge-recursive.c b/merge-recursive.c index 60d11716b3..457ad845f5 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -20,8 +20,6 @@ #include "attr.h" #include "merge-recursive.h" -static int subtree_merge; - static struct tree *shift_tree_object(struct tree *one, struct tree *two) { unsigned char shifted[20]; @@ -83,16 +81,11 @@ static struct string_list current_file_set = {NULL, 0, 0, 1}; static struct string_list current_directory_set = {NULL, 0, 0, 1}; static int call_depth = 0; -int merge_recursive_verbosity = 2; -static int diff_rename_limit = -1; -static int merge_rename_limit = -1; -static int buffer_output = 1; static struct strbuf obuf = STRBUF_INIT; -static int show(int v) +static int show(struct merge_options *o, int v) { - return (!call_depth && merge_recursive_verbosity >= v) || - merge_recursive_verbosity >= 5; + return (!call_depth && o->verbosity >= v) || o->verbosity >= 5; } static void flush_output(void) @@ -103,12 +96,12 @@ static void flush_output(void) } } -static void output(int v, const char *fmt, ...) +static void output(struct merge_options *o, int v, const char *fmt, ...) { int len; va_list ap; - if (!show(v)) + if (!show(o, v)) return; strbuf_grow(&obuf, call_depth * 2 + 2); @@ -132,7 +125,7 @@ static void output(int v, const char *fmt, ...) } strbuf_setlen(&obuf, obuf.len + len); strbuf_add(&obuf, "\n", 1); - if (!buffer_output) + if (!o->buffer_output) flush_output(); } @@ -219,17 +212,17 @@ static int git_merge_trees(int index_only, return rc; } -struct tree *write_tree_from_memory(void) +struct tree *write_tree_from_memory(struct merge_options *o) { struct tree *result = NULL; if (unmerged_cache()) { int i; - output(0, "There are unmerged index entries:"); + output(o, 0, "There are unmerged index entries:"); for (i = 0; i < active_nr; i++) { struct cache_entry *ce = active_cache[i]; if (ce_stage(ce)) - output(0, "%d %.*s", ce_stage(ce), ce_namelen(ce), ce->name); + output(o, 0, "%d %.*s", ce_stage(ce), ce_namelen(ce), ce->name); } return NULL; } @@ -341,11 +334,12 @@ struct rename * 'b_tree') to be able to associate the correct cache entries with * the rename information. 'tree' is always equal to either a_tree or b_tree. */ -static struct string_list *get_renames(struct tree *tree, - struct tree *o_tree, - struct tree *a_tree, - struct tree *b_tree, - struct string_list *entries) +static struct string_list *get_renames(struct merge_options *o, + struct tree *tree, + struct tree *o_tree, + struct tree *a_tree, + struct tree *b_tree, + struct string_list *entries) { int i; struct string_list *renames; @@ -355,8 +349,8 @@ static struct string_list *get_renames(struct tree *tree, diff_setup(&opts); DIFF_OPT_SET(&opts, RECURSIVE); opts.detect_rename = DIFF_DETECT_RENAME; - opts.rename_limit = merge_rename_limit >= 0 ? merge_rename_limit : - diff_rename_limit >= 0 ? diff_rename_limit : + opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit : + o->diff_rename_limit >= 0 ? o->diff_rename_limit : 500; opts.warn_on_too_large_rename = 1; opts.output_format = DIFF_FORMAT_NO_OUTPUT; @@ -717,7 +711,8 @@ static struct merge_file_info merge_file(struct diff_filespec *o, return result; } -static void conflict_rename_rename(struct rename *ren1, +static void conflict_rename_rename(struct merge_options *o, + struct rename *ren1, const char *branch1, struct rename *ren2, const char *branch2) @@ -730,13 +725,13 @@ static void conflict_rename_rename(struct rename *ren1, const char *dst_name2 = ren2_dst; if (string_list_has_string(¤t_directory_set, ren1_dst)) { dst_name1 = del[delp++] = unique_path(ren1_dst, branch1); - output(1, "%s is a directory in %s adding as %s instead", + output(o, 1, "%s is a directory in %s adding as %s instead", ren1_dst, branch2, dst_name1); remove_file(0, ren1_dst, 0); } if (string_list_has_string(¤t_directory_set, ren2_dst)) { dst_name2 = del[delp++] = unique_path(ren2_dst, branch2); - output(1, "%s is a directory in %s adding as %s instead", + output(o, 1, "%s is a directory in %s adding as %s instead", ren2_dst, branch1, dst_name2); remove_file(0, ren2_dst, 0); } @@ -757,24 +752,26 @@ static void conflict_rename_rename(struct rename *ren1, free(del[delp]); } -static void conflict_rename_dir(struct rename *ren1, +static void conflict_rename_dir(struct merge_options *o, + struct rename *ren1, const char *branch1) { char *new_path = unique_path(ren1->pair->two->path, branch1); - output(1, "Renaming %s to %s instead", ren1->pair->one->path, new_path); + output(o, 1, "Renaming %s to %s instead", ren1->pair->one->path, new_path); remove_file(0, ren1->pair->two->path, 0); update_file(0, ren1->pair->two->sha1, ren1->pair->two->mode, new_path); free(new_path); } -static void conflict_rename_rename_2(struct rename *ren1, +static void conflict_rename_rename_2(struct merge_options *o, + struct rename *ren1, const char *branch1, struct rename *ren2, const char *branch2) { char *new_path1 = unique_path(ren1->pair->two->path, branch1); char *new_path2 = unique_path(ren2->pair->two->path, branch2); - output(1, "Renaming %s to %s and %s to %s instead", + output(o, 1, "Renaming %s to %s and %s to %s instead", ren1->pair->one->path, new_path1, ren2->pair->one->path, new_path2); remove_file(0, ren1->pair->two->path, 0); @@ -784,10 +781,9 @@ static void conflict_rename_rename_2(struct rename *ren1, free(new_path1); } -static int process_renames(struct string_list *a_renames, - struct string_list *b_renames, - const char *a_branch, - const char *b_branch) +static int process_renames(struct merge_options *o, + struct string_list *a_renames, + struct string_list *b_renames) { int clean_merge = 1, i, j; struct string_list a_by_dst = {NULL, 0, 0, 0}, b_by_dst = {NULL, 0, 0, 0}; @@ -832,15 +828,15 @@ static int process_renames(struct string_list *a_renames, renames1 = a_renames; renames2 = b_renames; renames2Dst = &b_by_dst; - branch1 = a_branch; - branch2 = b_branch; + branch1 = o->branch1; + branch2 = o->branch2; } else { struct rename *tmp; renames1 = b_renames; renames2 = a_renames; renames2Dst = &a_by_dst; - branch1 = b_branch; - branch2 = a_branch; + branch1 = o->branch2; + branch2 = o->branch1; tmp = ren2; ren2 = ren1; ren1 = tmp; @@ -867,7 +863,7 @@ static int process_renames(struct string_list *a_renames, ren2->processed = 1; if (strcmp(ren1_dst, ren2_dst) != 0) { clean_merge = 0; - output(1, "CONFLICT (rename/rename): " + output(o, 1, "CONFLICT (rename/rename): " "Rename \"%s\"->\"%s\" in branch \"%s\" " "rename \"%s\"->\"%s\" in \"%s\"%s", src, ren1_dst, branch1, @@ -878,7 +874,7 @@ static int process_renames(struct string_list *a_renames, update_file(0, ren1->pair->one->sha1, ren1->pair->one->mode, src); } - conflict_rename_rename(ren1, branch1, ren2, branch2); + conflict_rename_rename(o, ren1, branch1, ren2, branch2); } else { struct merge_file_info mfi; remove_file(1, ren1_src, 1); @@ -888,13 +884,13 @@ static int process_renames(struct string_list *a_renames, branch1, branch2); if (mfi.merge || !mfi.clean) - output(1, "Renaming %s->%s", src, ren1_dst); + output(o, 1, "Renaming %s->%s", src, ren1_dst); if (mfi.merge) - output(2, "Auto-merging %s", ren1_dst); + output(o, 2, "Auto-merging %s", ren1_dst); if (!mfi.clean) { - output(1, "CONFLICT (content): merge conflict in %s", + output(o, 1, "CONFLICT (content): merge conflict in %s", ren1_dst); clean_merge = 0; @@ -925,14 +921,14 @@ static int process_renames(struct string_list *a_renames, if (string_list_has_string(¤t_directory_set, ren1_dst)) { clean_merge = 0; - output(1, "CONFLICT (rename/directory): Rename %s->%s in %s " + output(o, 1, "CONFLICT (rename/directory): Rename %s->%s in %s " " directory %s added in %s", ren1_src, ren1_dst, branch1, ren1_dst, branch2); - conflict_rename_dir(ren1, branch1); + conflict_rename_dir(o, ren1, branch1); } else if (sha_eq(src_other.sha1, null_sha1)) { clean_merge = 0; - output(1, "CONFLICT (rename/delete): Rename %s->%s in %s " + output(o, 1, "CONFLICT (rename/delete): Rename %s->%s in %s " "and deleted in %s", ren1_src, ren1_dst, branch1, branch2); @@ -941,31 +937,32 @@ static int process_renames(struct string_list *a_renames, const char *new_path; clean_merge = 0; try_merge = 1; - output(1, "CONFLICT (rename/add): Rename %s->%s in %s. " + output(o, 1, "CONFLICT (rename/add): Rename %s->%s in %s. " "%s added in %s", ren1_src, ren1_dst, branch1, ren1_dst, branch2); new_path = unique_path(ren1_dst, branch2); - output(1, "Adding as %s instead", new_path); + output(o, 1, "Adding as %s instead", new_path); update_file(0, dst_other.sha1, dst_other.mode, new_path); } else if ((item = string_list_lookup(ren1_dst, renames2Dst))) { ren2 = item->util; clean_merge = 0; ren2->processed = 1; - output(1, "CONFLICT (rename/rename): Rename %s->%s in %s. " + output(o, 1, "CONFLICT (rename/rename): " + "Rename %s->%s in %s. " "Rename %s->%s in %s", ren1_src, ren1_dst, branch1, ren2->pair->one->path, ren2->pair->two->path, branch2); - conflict_rename_rename_2(ren1, branch1, ren2, branch2); + conflict_rename_rename_2(o, ren1, branch1, ren2, branch2); } else try_merge = 1; if (try_merge) { - struct diff_filespec *o, *a, *b; + struct diff_filespec *one, *a, *b; struct merge_file_info mfi; src_other.path = (char *)ren1_src; - o = ren1->pair->one; + one = ren1->pair->one; if (a_renames == renames1) { a = ren1->pair->two; b = &src_other; @@ -973,8 +970,8 @@ static int process_renames(struct string_list *a_renames, b = ren1->pair->two; a = &src_other; } - mfi = merge_file(o, a, b, - a_branch, b_branch); + mfi = merge_file(one, a, b, + o->branch1, o->branch2); if (mfi.clean && sha_eq(mfi.sha, ren1->pair->two->sha1) && @@ -984,20 +981,20 @@ static int process_renames(struct string_list *a_renames, * t6022 test. If you change * it update the test too. */ - output(3, "Skipped %s (merged same as existing)", ren1_dst); + output(o, 3, "Skipped %s (merged same as existing)", ren1_dst); else { if (mfi.merge || !mfi.clean) - output(1, "Renaming %s => %s", ren1_src, ren1_dst); + output(o, 1, "Renaming %s => %s", ren1_src, ren1_dst); if (mfi.merge) - output(2, "Auto-merging %s", ren1_dst); + output(o, 2, "Auto-merging %s", ren1_dst); if (!mfi.clean) { - output(1, "CONFLICT (rename/modify): Merge conflict in %s", + output(o, 1, "CONFLICT (rename/modify): Merge conflict in %s", ren1_dst); clean_merge = 0; if (!index_only) update_stages(ren1_dst, - o, a, b, 1); + one, a, b, 1); } update_file(mfi.clean, mfi.sha, mfi.mode, ren1_dst); } @@ -1016,9 +1013,8 @@ static unsigned char *stage_sha(const unsigned char *sha, unsigned mode) } /* Per entry merge function */ -static int process_entry(const char *path, struct stage_data *entry, - const char *branch1, - const char *branch2) +static int process_entry(struct merge_options *o, + const char *path, struct stage_data *entry) { /* printf("processing entry, clean cache: %s\n", index_only ? "yes": "no"); @@ -1040,23 +1036,23 @@ static int process_entry(const char *path, struct stage_data *entry, /* Deleted in both or deleted in one and * unchanged in the other */ if (a_sha) - output(2, "Removing %s", path); + output(o, 2, "Removing %s", path); /* do not touch working file if it did not exist */ remove_file(1, path, !a_sha); } else { /* Deleted in one and changed in the other */ clean_merge = 0; if (!a_sha) { - output(1, "CONFLICT (delete/modify): %s deleted in %s " + output(o, 1, "CONFLICT (delete/modify): %s deleted in %s " "and modified in %s. Version %s of %s left in tree.", - path, branch1, - branch2, branch2, path); + path, o->branch1, + o->branch2, o->branch2, path); update_file(0, b_sha, b_mode, path); } else { - output(1, "CONFLICT (delete/modify): %s deleted in %s " + output(o, 1, "CONFLICT (delete/modify): %s deleted in %s " "and modified in %s. Version %s of %s left in tree.", - path, branch2, - branch1, branch1, path); + path, o->branch2, + o->branch1, o->branch1, path); update_file(0, a_sha, a_mode, path); } } @@ -1071,14 +1067,14 @@ static int process_entry(const char *path, struct stage_data *entry, const char *conf; if (a_sha) { - add_branch = branch1; - other_branch = branch2; + add_branch = o->branch1; + other_branch = o->branch2; mode = a_mode; sha = a_sha; conf = "file/directory"; } else { - add_branch = branch2; - other_branch = branch1; + add_branch = o->branch2; + other_branch = o->branch1; mode = b_mode; sha = b_sha; conf = "directory/file"; @@ -1086,13 +1082,13 @@ static int process_entry(const char *path, struct stage_data *entry, if (string_list_has_string(¤t_directory_set, path)) { const char *new_path = unique_path(path, add_branch); clean_merge = 0; - output(1, "CONFLICT (%s): There is a directory with name %s in %s. " + output(o, 1, "CONFLICT (%s): There is a directory with name %s in %s. " "Adding %s as %s", conf, path, other_branch, path, new_path); remove_file(0, path, 0); update_file(0, sha, mode, new_path); } else { - output(2, "Adding %s", path); + output(o, 2, "Adding %s", path); update_file(1, sha, mode, path); } } else if (a_sha && b_sha) { @@ -1100,32 +1096,32 @@ static int process_entry(const char *path, struct stage_data *entry, /* case D: Modified in both, but differently. */ const char *reason = "content"; struct merge_file_info mfi; - struct diff_filespec o, a, b; + struct diff_filespec one, a, b; if (!o_sha) { reason = "add/add"; o_sha = (unsigned char *)null_sha1; } - output(2, "Auto-merging %s", path); - o.path = a.path = b.path = (char *)path; - hashcpy(o.sha1, o_sha); - o.mode = o_mode; + output(o, 2, "Auto-merging %s", path); + one.path = a.path = b.path = (char *)path; + hashcpy(one.sha1, o_sha); + one.mode = o_mode; hashcpy(a.sha1, a_sha); a.mode = a_mode; hashcpy(b.sha1, b_sha); b.mode = b_mode; - mfi = merge_file(&o, &a, &b, - branch1, branch2); + mfi = merge_file(&one, &a, &b, + o->branch1, o->branch2); clean_merge = mfi.clean; if (mfi.clean) update_file(1, mfi.sha, mfi.mode, path); else if (S_ISGITLINK(mfi.mode)) - output(1, "CONFLICT (submodule): Merge conflict in %s " + output(o, 1, "CONFLICT (submodule): Merge conflict in %s " "- needs %s", path, sha1_to_hex(b.sha1)); else { - output(1, "CONFLICT (%s): Merge conflict in %s", + output(o, 1, "CONFLICT (%s): Merge conflict in %s", reason, path); if (index_only) @@ -1146,22 +1142,21 @@ static int process_entry(const char *path, struct stage_data *entry, return clean_merge; } -int merge_trees(struct tree *head, +int merge_trees(struct merge_options *o, + struct tree *head, struct tree *merge, struct tree *common, - const char *branch1, - const char *branch2, struct tree **result) { int code, clean; - if (subtree_merge) { + if (o->subtree_merge) { merge = shift_tree_object(head, merge); common = shift_tree_object(head, common); } if (sha_eq(common->object.sha1, merge->object.sha1)) { - output(0, "Already uptodate!"); + output(o, 0, "Already uptodate!"); *result = head; return 1; } @@ -1182,15 +1177,14 @@ int merge_trees(struct tree *head, get_files_dirs(merge); entries = get_unmerged(); - re_head = get_renames(head, common, head, merge, entries); - re_merge = get_renames(merge, common, head, merge, entries); - clean = process_renames(re_head, re_merge, - branch1, branch2); + re_head = get_renames(o, head, common, head, merge, entries); + re_merge = get_renames(o, merge, common, head, merge, entries); + clean = process_renames(o, re_head, re_merge); for (i = 0; i < entries->nr; i++) { const char *path = entries->items[i].string; struct stage_data *e = entries->items[i].util; if (!e->processed - && !process_entry(path, e, branch1, branch2)) + && !process_entry(o, path, e)) clean = 0; } @@ -1203,7 +1197,7 @@ int merge_trees(struct tree *head, clean = 1; if (index_only) - *result = write_tree_from_memory(); + *result = write_tree_from_memory(o); return clean; } @@ -1223,10 +1217,9 @@ static struct commit_list *reverse_commit_list(struct commit_list *list) * Merge the commits h1 and h2, return the resulting virtual * commit object and a flag indicating the cleanness of the merge. */ -int merge_recursive(struct commit *h1, +int merge_recursive(struct merge_options *o, + struct commit *h1, struct commit *h2, - const char *branch1, - const char *branch2, struct commit_list *ca, struct commit **result) { @@ -1235,8 +1228,8 @@ int merge_recursive(struct commit *h1, struct tree *mrtree = mrtree; int clean; - if (show(4)) { - output(4, "Merging:"); + if (show(o, 4)) { + output(o, 4, "Merging:"); output_commit_title(h1); output_commit_title(h2); } @@ -1246,8 +1239,8 @@ int merge_recursive(struct commit *h1, ca = reverse_commit_list(ca); } - if (show(5)) { - output(5, "found %u common ancestor(s):", commit_list_count(ca)); + if (show(o, 5)) { + output(o, 5, "found %u common ancestor(s):", commit_list_count(ca)); for (iter = ca; iter; iter = iter->next) output_commit_title(iter->item); } @@ -1264,6 +1257,7 @@ int merge_recursive(struct commit *h1, } for (iter = ca; iter; iter = iter->next) { + const char *saved_b1, *saved_b2; call_depth++; /* * When the merge fails, the result contains files @@ -1273,11 +1267,14 @@ int merge_recursive(struct commit *h1, * "conflicts" were already resolved. */ discard_cache(); - merge_recursive(merged_common_ancestors, iter->item, - "Temporary merge branch 1", - "Temporary merge branch 2", - NULL, - &merged_common_ancestors); + saved_b1 = o->branch1; + saved_b2 = o->branch2; + o->branch1 = "Temporary merge branch 1"; + o->branch2 = "Temporary merge branch 2"; + merge_recursive(o, merged_common_ancestors, iter->item, + NULL, &merged_common_ancestors); + o->branch1 = saved_b1; + o->branch2 = saved_b2; call_depth--; if (!merged_common_ancestors) @@ -1291,8 +1288,8 @@ int merge_recursive(struct commit *h1, } else index_only = 1; - clean = merge_trees(h1->tree, h2->tree, merged_common_ancestors->tree, - branch1, branch2, &mrtree); + clean = merge_trees(o, h1->tree, h2->tree, merged_common_ancestors->tree, + &mrtree); if (index_only) { *result = make_virtual_commit(mrtree, "merged tree"); @@ -1319,35 +1316,33 @@ static struct commit *get_ref(const unsigned char *sha1, const char *name) return (struct commit *)object; } -int merge_recursive_generic(const char **base_list, - const unsigned char *head_sha1, const char *head_name, - const unsigned char *next_sha1, const char *next_name) +int merge_recursive_generic(struct merge_options *o, + const unsigned char *head, + const unsigned char *merge, + int num_base_list, + const unsigned char **base_list, + struct commit **result) { int clean, index_fd; struct lock_file *lock = xcalloc(1, sizeof(struct lock_file)); - struct commit *result; - struct commit *head_commit = get_ref(head_sha1, head_name); - struct commit *next_commit = get_ref(next_sha1, next_name); + struct commit *head_commit = get_ref(head, o->branch1); + struct commit *next_commit = get_ref(merge, o->branch2); struct commit_list *ca = NULL; if (base_list) { int i; - for (i = 0; base_list[i]; ++i) { - unsigned char sha[20]; + for (i = 0; i < num_base_list; ++i) { struct commit *base; - if (get_sha1(base_list[i], sha)) - return error("Could not resolve ref '%s'", - base_list[i]); - if (!(base = get_ref(sha, base_list[i]))) + if (!(base = get_ref(base_list[i], sha1_to_hex(base_list[i])))) return error("Could not parse object '%s'", - base_list[i]); + sha1_to_hex(base_list[i])); commit_list_insert(base, &ca); } } index_fd = hold_locked_index(lock, 1); - clean = merge_recursive(head_commit, next_commit, - head_name, next_name, ca, &result); + clean = merge_recursive(o, head_commit, next_commit, ca, + result); if (active_cache_changed && (write_cache(index_fd, active_cache, active_nr) || commit_locked_index(lock))) @@ -1356,29 +1351,35 @@ int merge_recursive_generic(const char **base_list, return clean ? 0 : 1; } -int merge_recursive_config(const char *var, const char *value, void *cb) +static int merge_recursive_config(const char *var, const char *value, void *cb) { + struct merge_options *o = cb; if (!strcasecmp(var, "merge.verbosity")) { - merge_recursive_verbosity = git_config_int(var, value); + o->verbosity = git_config_int(var, value); return 0; } if (!strcasecmp(var, "diff.renamelimit")) { - diff_rename_limit = git_config_int(var, value); + o->diff_rename_limit = git_config_int(var, value); return 0; } if (!strcasecmp(var, "merge.renamelimit")) { - merge_rename_limit = git_config_int(var, value); + o->merge_rename_limit = git_config_int(var, value); return 0; } return git_default_config(var, value, cb); } -void merge_recursive_setup(int is_subtree_merge) +void init_merge_options(struct merge_options *o) { + memset(o, 0, sizeof(struct merge_options)); + o->verbosity = 2; + o->buffer_output = 1; + o->diff_rename_limit = -1; + o->merge_rename_limit = -1; + git_config(merge_recursive_config, o); if (getenv("GIT_MERGE_VERBOSITY")) - merge_recursive_verbosity = + o->verbosity = strtol(getenv("GIT_MERGE_VERBOSITY"), NULL, 10); - if (merge_recursive_verbosity >= 5) - buffer_output = 0; - subtree_merge = is_subtree_merge; + if (o->verbosity >= 5) + o->buffer_output = 0; } diff --git a/merge-recursive.h b/merge-recursive.h dissimilarity index 70% index 4dd6476af6..72f0a2895d 100644 --- a/merge-recursive.h +++ b/merge-recursive.h @@ -1,26 +1,42 @@ -#ifndef MERGE_RECURSIVE_H -#define MERGE_RECURSIVE_H - -int merge_recursive(struct commit *h1, - struct commit *h2, - const char *branch1, - const char *branch2, - struct commit_list *ancestors, - struct commit **result); - -int merge_trees(struct tree *head, - struct tree *merge, - struct tree *common, - const char *branch1, - const char *branch2, - struct tree **result); -extern int merge_recursive_generic(const char **base_list, - const unsigned char *head_sha1, const char *head_name, - const unsigned char *next_sha1, const char *next_name); -int merge_recursive_config(const char *var, const char *value, void *cb); -void merge_recursive_setup(int is_subtree_merge); -struct tree *write_tree_from_memory(void); - -extern int merge_recursive_verbosity; - -#endif +#ifndef MERGE_RECURSIVE_H +#define MERGE_RECURSIVE_H + +struct merge_options { + const char *branch1; + const char *branch2; + unsigned subtree_merge : 1; + unsigned buffer_output : 1; + int verbosity; + int diff_rename_limit; + int merge_rename_limit; +}; + +/* merge_trees() but with recursive ancestor consolidation */ +int merge_recursive(struct merge_options *o, + struct commit *h1, + struct commit *h2, + struct commit_list *ancestors, + struct commit **result); + +/* rename-detecting three-way merge, no recursion */ +int merge_trees(struct merge_options *o, + struct tree *head, + struct tree *merge, + struct tree *common, + struct tree **result); + +/* + * "git-merge-recursive" can be fed trees; wrap them into + * virtual commits and call merge_recursive() proper. + */ +int merge_recursive_generic(struct merge_options *o, + const unsigned char *head, + const unsigned char *merge, + int num_ca, + const unsigned char **ca, + struct commit **result); + +void init_merge_options(struct merge_options *o); +struct tree *write_tree_from_memory(struct merge_options *o); + +#endif -- 2.11.4.GIT