Allow writing to the private index file mapping.
[git/git.git] / diff.h
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1/*
2 * Copyright (C) 2005 Junio C Hamano
3 */
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4#ifndef DIFF_H
5#define DIFF_H
6
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7/* These two are for backward compatibility with show-diff;
8 * new users should not use them.
9 */
10extern void show_differences(const struct cache_entry *ce, int reverse);
11extern void show_diff_empty(const struct cache_entry *ce, int reverse);
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13struct diff_spec {
14 union {
15 const char *name; /* path on the filesystem */
16 unsigned char sha1[20]; /* blob object ID */
17 } u;
18 unsigned short mode; /* file mode */
19 unsigned sha1_valid : 1; /* if true, use u.sha1 and trust mode.
20 * (however with a NULL SHA1, read them
21 * from the file!).
22 * if false, use u.name and read mode from
23 * the filesystem.
24 */
25 unsigned file_valid : 1; /* if false the file does not even exist */
26};
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28extern void run_external_diff(const char *name,
29 struct diff_spec *, struct diff_spec *);
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30
31#endif /* DIFF_H */