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104 lines
3.4 KiB
104 lines
3.4 KiB
/* |
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* Copyright (C) 2005 Junio C Hamano |
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*/ |
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#ifndef _DIFFCORE_H_ |
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#define _DIFFCORE_H_ |
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/* This header file is internal between diff.c and its diff transformers |
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* (e.g. diffcore-rename, diffcore-pickaxe). Never include this header |
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* in anything else. |
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*/ |
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/* We internally use unsigned short as the score value, |
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* and rely on an int capable to hold 32-bits. -B can take |
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* -Bmerge_score/break_score format and the two scores are |
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* passed around in one int (high 16-bit for merge and low 16-bit |
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* for break). |
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*/ |
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#define MAX_SCORE 60000 |
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#define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */ |
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#define DEFAULT_BREAK_SCORE 30000 /* minimum for break to happen (50%)*/ |
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#define DEFAULT_MERGE_SCORE 48000 /* maximum for break-merge to happen (80%)*/ |
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#define MINIMUM_BREAK_SIZE 400 /* do not break a file smaller than this */ |
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struct diff_filespec { |
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unsigned char sha1[20]; |
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char *path; |
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void *data; |
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unsigned long size; |
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int xfrm_flags; /* for use by the xfrm */ |
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unsigned short mode; /* file mode */ |
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unsigned sha1_valid : 1; /* if true, use sha1 and trust mode; |
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* if false, use the name and read from |
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* the filesystem. |
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*/ |
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#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) |
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unsigned should_free : 1; /* data should be free()'ed */ |
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unsigned should_munmap : 1; /* data should be munmap()'ed */ |
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}; |
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extern struct diff_filespec *alloc_filespec(const char *); |
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extern void fill_filespec(struct diff_filespec *, const unsigned char *, |
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unsigned short); |
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extern int diff_populate_filespec(struct diff_filespec *, int); |
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extern void diff_free_filespec(struct diff_filespec *); |
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struct diff_filepair { |
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struct diff_filespec *one; |
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struct diff_filespec *two; |
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unsigned short int score; |
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char status; /* M C R N D U (see Documentation/diff-format.txt) */ |
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unsigned source_stays : 1; /* all of R/C are copies */ |
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unsigned broken_pair : 1; |
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}; |
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#define DIFF_PAIR_UNMERGED(p) \ |
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(!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two)) |
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#define DIFF_PAIR_RENAME(p) (strcmp((p)->one->path, (p)->two->path)) |
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#define DIFF_PAIR_BROKEN(p) \ |
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( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \ |
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((p)->broken_pair != 0) ) |
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#define DIFF_PAIR_TYPE_CHANGED(p) \ |
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((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode)) |
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#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode) |
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extern void diff_free_filepair(struct diff_filepair *); |
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extern int diff_unmodified_pair(struct diff_filepair *); |
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struct diff_queue_struct { |
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struct diff_filepair **queue; |
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int alloc; |
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int nr; |
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}; |
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extern struct diff_queue_struct diff_queued_diff; |
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extern struct diff_filepair *diff_queue(struct diff_queue_struct *, |
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struct diff_filespec *, |
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struct diff_filespec *); |
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extern void diff_q(struct diff_queue_struct *, struct diff_filepair *); |
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extern void diffcore_pathspec(const char **pathspec); |
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extern void diffcore_break(int); |
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extern void diffcore_rename(int rename_copy, int); |
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extern void diffcore_merge_broken(void); |
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extern void diffcore_pickaxe(const char *needle, int opts); |
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extern void diffcore_order(const char *orderfile); |
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#define DIFF_DEBUG 0 |
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#if DIFF_DEBUG |
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void diff_debug_filespec(struct diff_filespec *, int, const char *); |
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void diff_debug_filepair(const struct diff_filepair *, int); |
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void diff_debug_queue(const char *, struct diff_queue_struct *); |
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#else |
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#define diff_debug_filespec(a,b,c) do {} while(0) |
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#define diff_debug_filepair(a,b) do {} while(0) |
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#define diff_debug_queue(a,b) do {} while(0) |
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#endif |
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#endif
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