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a779fb829b
The merge_options struct had lots of fields, making it a little imposing, but the options naturally fall into multiple different groups. Grouping similar options and adding a comment or two makes it easier to read, easier for new folks to figure out which options are related, and thus easier for them to find the options they need. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
127 lines
3.7 KiB
C
127 lines
3.7 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 repository;
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struct merge_options {
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struct repository *repo;
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/* ref names used in console messages and conflict markers */
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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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/* rename related options */
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int detect_renames;
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enum {
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MERGE_DIRECTORY_RENAMES_NONE = 0,
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MERGE_DIRECTORY_RENAMES_CONFLICT = 1,
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MERGE_DIRECTORY_RENAMES_TRUE = 2
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} detect_directory_renames;
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int rename_limit;
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int rename_score;
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int show_rename_progress;
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/* xdiff-related options (patience, ignore whitespace, ours/theirs) */
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long xdl_opts;
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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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/* console output related options */
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int verbosity;
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unsigned buffer_output; /* 1: output at end, 2: keep buffered */
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struct strbuf obuf; /* output buffer */
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/* miscellaneous control options */
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const char *subtree_shift;
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unsigned renormalize : 1;
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/* internal fields used by the implementation (do NOT set these) */
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int call_depth;
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int needed_rename_limit;
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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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void init_merge_options(struct merge_options *opt, struct repository *repo);
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/* parse the option in s and update the relevant field of opt */
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int parse_merge_opt(struct merge_options *opt, const char *s);
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/*
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* RETURN VALUES: All the merge_* functions below return a value as follows:
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* > 0 Merge was clean
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* = 0 Merge had conflicts
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* < 0 Merge hit an unexpected and unrecoverable problem (e.g. disk
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* full) and aborted merge part-way through.
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*/
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/*
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* rename-detecting three-way merge, no recursion.
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*
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* Outputs:
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* - See RETURN VALUES above
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* - No commit is created
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* - opt->repo->index has the new index
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* - $GIT_INDEX_FILE is not updated
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* - The working tree is updated with results of the merge
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*/
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int merge_trees(struct merge_options *opt,
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struct tree *head,
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struct tree *merge,
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struct tree *merge_base);
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/*
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* merge_recursive is like merge_trees() but with recursive ancestor
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* consolidation and, if the commit is clean, creation of a commit.
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*
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* NOTE: empirically, about a decade ago it was determined that with more
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* than two merge bases, optimal behavior was found when the
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* merge_bases were passed in the order of oldest commit to newest
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* commit. Also, merge_bases will be consumed (emptied) so make a
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* copy if you need it.
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*
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* Outputs:
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* - See RETURN VALUES above
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* - If merge is clean, a commit is created and its address written to *result
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* - opt->repo->index has the new index
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* - $GIT_INDEX_FILE is not updated
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* - The working tree is updated with results of the merge
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*/
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int merge_recursive(struct merge_options *opt,
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struct commit *h1,
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struct commit *h2,
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struct commit_list *merge_bases,
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struct commit **result);
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/*
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* merge_recursive_generic can operate on trees instead of commits, by
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* wrapping the trees into virtual commits, and calling merge_recursive().
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* It also writes out the in-memory index to disk if the merge is successful.
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*
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* Outputs:
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* - See RETURN VALUES above
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* - If merge is clean, a commit is created and its address written to *result
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* - opt->repo->index has the new index
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* - $GIT_INDEX_FILE is updated
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* - The working tree is updated with results of the merge
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*/
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int merge_recursive_generic(struct merge_options *opt,
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const struct object_id *head,
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const struct object_id *merge,
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int num_merge_bases,
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const struct object_id **merge_bases,
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struct commit **result);
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#endif
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