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ca676b9bd3
Recent addition of "directory rename" heuristics to the merge-recursive backend makes the command susceptible to false positives and false negatives. In the context of "git am -3", which does not know about surrounding unmodified paths and thus cannot inform the merge machinery about the full trees involved, this risk is particularly severe. As such, the heuristic is disabled for "git am -3" to keep the machinery "more stupid but predictable". * en/directory-renames-nothanks: am: avoid directory rename detection when calling recursive merge machinery merge-recursive: add ability to turn off directory rename detection t3401: add another directory rename testcase for rebase and am
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
#ifndef MERGE_RECURSIVE_H
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#define MERGE_RECURSIVE_H
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#include "string-list.h"
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#include "unpack-trees.h"
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struct commit;
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struct merge_options {
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const char *ancestor;
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const char *branch1;
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const char *branch2;
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enum {
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MERGE_RECURSIVE_NORMAL = 0,
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MERGE_RECURSIVE_OURS,
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MERGE_RECURSIVE_THEIRS
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} recursive_variant;
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const char *subtree_shift;
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unsigned buffer_output; /* 1: output at end, 2: keep buffered */
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unsigned renormalize : 1;
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long xdl_opts;
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int verbosity;
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int detect_directory_renames;
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int diff_detect_rename;
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int merge_detect_rename;
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int diff_rename_limit;
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int merge_rename_limit;
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int rename_score;
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int needed_rename_limit;
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int show_rename_progress;
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int call_depth;
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struct strbuf obuf;
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struct hashmap current_file_dir_set;
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struct string_list df_conflict_file_set;
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struct unpack_trees_options unpack_opts;
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struct index_state orig_index;
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};
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/*
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* For dir_rename_entry, directory names are stored as a full path from the
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* toplevel of the repository and do not include a trailing '/'. Also:
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*
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* dir: original name of directory being renamed
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* non_unique_new_dir: if true, could not determine new_dir
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* new_dir: final name of directory being renamed
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* possible_new_dirs: temporary used to help determine new_dir; see comments
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* in get_directory_renames() for details
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*/
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struct dir_rename_entry {
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struct hashmap_entry ent; /* must be the first member! */
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char *dir;
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unsigned non_unique_new_dir:1;
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struct strbuf new_dir;
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struct string_list possible_new_dirs;
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};
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struct collision_entry {
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struct hashmap_entry ent; /* must be the first member! */
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char *target_file;
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struct string_list source_files;
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unsigned reported_already:1;
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};
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static inline int merge_detect_rename(struct merge_options *o)
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{
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return o->merge_detect_rename >= 0 ? o->merge_detect_rename :
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o->diff_detect_rename >= 0 ? o->diff_detect_rename : 1;
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}
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/* merge_trees() but with recursive ancestor consolidation */
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int merge_recursive(struct merge_options *o,
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struct commit *h1,
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struct commit *h2,
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struct commit_list *ancestors,
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struct commit **result);
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/* rename-detecting three-way merge, no recursion */
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int merge_trees(struct merge_options *o,
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struct tree *head,
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struct tree *merge,
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struct tree *common,
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struct tree **result);
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/*
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* "git-merge-recursive" can be fed trees; wrap them into
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* virtual commits and call merge_recursive() proper.
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*/
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int merge_recursive_generic(struct merge_options *o,
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const struct object_id *head,
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const struct object_id *merge,
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int num_ca,
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const struct object_id **ca,
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struct commit **result);
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void init_merge_options(struct merge_options *o);
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struct tree *write_tree_from_memory(struct merge_options *o);
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int parse_merge_opt(struct merge_options *out, const char *s);
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#endif
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