1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (c) 2005 Junio C Hamano
*/
#include "cache.h"
#include "diff.h"
static int diff_output_format = DIFF_FORMAT_RAW;
static int diff_line_termination = '\n';
static int detect_rename = 0;
static int find_copies_harder = 0;
static int diff_setup_opt = 0;
static int diff_score_opt = 0;
static const char *pickaxe = NULL;
static int pickaxe_opts = 0;
static int diff_break_opt = -1;
static const char *orderfile = NULL;
static const char *diff_filter = NULL;
static const char diff_stages_usage[] =
"git-diff-stages [<common diff options>] <stage1> <stage2> [<path>...]"
COMMON_DIFF_OPTIONS_HELP;
static void diff_stages(int stage1, int stage2)
{
int i = 0;
while (i < active_nr) {
struct cache_entry *ce, *stages[4] = { NULL, };
struct cache_entry *one, *two;
const char *name;
int len;
ce = active_cache[i];
len = ce_namelen(ce);
name = ce->name;
for (;;) {
int stage = ce_stage(ce);
stages[stage] = ce;
if (active_nr <= ++i)
break;
ce = active_cache[i];
if (ce_namelen(ce) != len ||
memcmp(name, ce->name, len))
break;
}
one = stages[stage1];
two = stages[stage2];
if (!one && !two)
continue;
if (!one)
diff_addremove('+', ntohl(two->ce_mode),
two->sha1, name, NULL);
else if (!two)
diff_addremove('-', ntohl(one->ce_mode),
one->sha1, name, NULL);
else if (memcmp(one->sha1, two->sha1, 20) ||
(one->ce_mode != two->ce_mode) ||
find_copies_harder)
diff_change(ntohl(one->ce_mode), ntohl(two->ce_mode),
one->sha1, two->sha1, name, NULL);
}
}
int main(int ac, const char **av)
{
int stage1, stage2;
read_cache();
while (1 < ac && av[1][0] == '-') {
const char *arg = av[1];
if (!strcmp(arg, "-r"))
; /* as usual */
else if (!strcmp(arg, "-p") || !strcmp(arg, "-u"))
diff_output_format = DIFF_FORMAT_PATCH;
else if (!strncmp(arg, "-B", 2)) {
if ((diff_break_opt = diff_scoreopt_parse(arg)) == -1)
usage(diff_stages_usage);
}
else if (!strncmp(arg, "-M", 2)) {
detect_rename = DIFF_DETECT_RENAME;
if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
usage(diff_stages_usage);
}
else if (!strncmp(arg, "-C", 2)) {
detect_rename = DIFF_DETECT_COPY;
if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
usage(diff_stages_usage);
}
else if (!strcmp(arg, "--find-copies-harder"))
find_copies_harder = 1;
else if (!strcmp(arg, "-z"))
diff_line_termination = 0;
else if (!strcmp(arg, "--name-only"))
diff_output_format = DIFF_FORMAT_NAME;
else if (!strcmp(arg, "-R"))
diff_setup_opt |= DIFF_SETUP_REVERSE;
else if (!strncmp(arg, "-S", 2))
pickaxe = arg + 2;
else if (!strncmp(arg, "-O", 2))
orderfile = arg + 2;
else if (!strncmp(arg, "--diff-filter=", 14))
diff_filter = arg + 14;
else if (!strcmp(arg, "--pickaxe-all"))
pickaxe_opts = DIFF_PICKAXE_ALL;
else
usage(diff_stages_usage);
ac--; av++;
}
if (ac < 3 ||
sscanf(av[1], "%d", &stage1) != 1 ||
! (0 <= stage1 && stage1 <= 3) ||
sscanf(av[2], "%d", &stage2) != 1 ||
! (0 <= stage2 && stage2 <= 3) ||
(find_copies_harder && detect_rename != DIFF_DETECT_COPY))
usage(diff_stages_usage);
av += 3; /* The rest from av[0] are for paths restriction. */
diff_setup(diff_setup_opt);
diff_stages(stage1, stage2);
diffcore_std(av,
detect_rename, diff_score_opt,
pickaxe, pickaxe_opts,
diff_break_opt,
orderfile,
diff_filter);
diff_flush(diff_output_format, diff_line_termination);
return 0;
}
|
