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b4194828dc
A negative return from the unpack callback function usually means unpack failed for the entry and signals the unpack_trees() machinery to fail the entire merge operation, immediately and there is no other way for the callback to tell the machinery to exit early without reporting an error. This is what we usually want to make a merge all-or-nothing operation, but the machinery is also used for diff-index codepath by using a custom unpack callback function. And we do sometimes want to exit early without failing, namely when we are under --quiet and can short-cut the diff upon finding the first difference. Add "exiting_early" field to unpack_trees_options structure, to signal the unpack_trees() machinery that the negative return value is not signaling an error but an early return from the unpack_trees() machinery. As this by definition hasn't unpacked everything, discard the resulting index just like the failure codepath. Signed-off-by: Junio C Hamano <gitster@pobox.com>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
#ifndef UNPACK_TREES_H
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#define UNPACK_TREES_H
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#include "string-list.h"
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#define MAX_UNPACK_TREES 8
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struct unpack_trees_options;
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struct exclude_list;
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typedef int (*merge_fn_t)(struct cache_entry **src,
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struct unpack_trees_options *options);
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enum unpack_trees_error_types {
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ERROR_WOULD_OVERWRITE = 0,
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ERROR_NOT_UPTODATE_FILE,
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ERROR_NOT_UPTODATE_DIR,
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ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN,
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ERROR_WOULD_LOSE_UNTRACKED_REMOVED,
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ERROR_BIND_OVERLAP,
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ERROR_SPARSE_NOT_UPTODATE_FILE,
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ERROR_WOULD_LOSE_ORPHANED_OVERWRITTEN,
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ERROR_WOULD_LOSE_ORPHANED_REMOVED,
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NB_UNPACK_TREES_ERROR_TYPES
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};
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/*
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* Sets the list of user-friendly error messages to be used by the
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* command "cmd" (either merge or checkout), and show_all_errors to 1.
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*/
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void setup_unpack_trees_porcelain(struct unpack_trees_options *opts,
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const char *cmd);
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struct unpack_trees_options {
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unsigned int reset,
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merge,
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update,
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index_only,
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nontrivial_merge,
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trivial_merges_only,
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verbose_update,
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aggressive,
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skip_unmerged,
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initial_checkout,
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diff_index_cached,
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debug_unpack,
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skip_sparse_checkout,
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gently,
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exiting_early,
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show_all_errors;
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const char *prefix;
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int cache_bottom;
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struct dir_struct *dir;
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merge_fn_t fn;
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const char *msgs[NB_UNPACK_TREES_ERROR_TYPES];
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/*
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* Store error messages in an array, each case
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* corresponding to a error message type
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*/
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struct string_list unpack_rejects[NB_UNPACK_TREES_ERROR_TYPES];
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int head_idx;
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int merge_size;
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struct cache_entry *df_conflict_entry;
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void *unpack_data;
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struct index_state *dst_index;
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struct index_state *src_index;
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struct index_state result;
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struct exclude_list *el; /* for internal use */
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};
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extern int unpack_trees(unsigned n, struct tree_desc *t,
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struct unpack_trees_options *options);
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int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o);
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int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o);
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int bind_merge(struct cache_entry **src, struct unpack_trees_options *o);
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int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o);
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#endif
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