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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
| | #include "builtin.h"
#include "cache.h"
#include "parse-options.h"
#include "bisect.h"
#include "refs.h"
#include "dir.h"
static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS")
static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK")
static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG")
static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN")
static GIT_PATH_FUNC(git_path_head_name, "head-name")
static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START")
static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --next-all [--no-checkout]"),
N_("git bisect--helper --write-terms <bad_term> <good_term>"),
N_("git bisect--helper --bisect-clean-state"),
NULL
};
/*
* Check whether the string `term` belongs to the set of strings
* included in the variable arguments.
*/
static int one_of(const char *term, ...)
{
int res = 0;
va_list matches;
const char *match;
va_start(matches, term);
while (!res && (match = va_arg(matches, const char *)))
res = !strcmp(term, match);
va_end(matches);
return res;
}
static int check_term_format(const char *term, const char *orig_term)
{
int res;
char *new_term = xstrfmt("refs/bisect/%s", term);
res = check_refname_format(new_term, 0);
free(new_term);
if (res)
return error(_("'%s' is not a valid term"), term);
if (one_of(term, "help", "start", "skip", "next", "reset",
"visualize", "replay", "log", "run", NULL))
return error(_("can't use the builtin command '%s' as a term"), term);
/*
* In theory, nothing prevents swapping completely good and bad,
* but this situation could be confusing and hasn't been tested
* enough. Forbid it for now.
*/
if ((strcmp(orig_term, "bad") && one_of(term, "bad", "new", NULL)) ||
(strcmp(orig_term, "good") && one_of(term, "good", "old", NULL)))
return error(_("can't change the meaning of the term '%s'"), term);
return 0;
}
static int write_terms(const char *bad, const char *good)
{
FILE *fp;
int res;
if (!strcmp(bad, good))
return error(_("please use two different terms"));
if (check_term_format(bad, "bad") || check_term_format(good, "good"))
return -1;
fp = fopen(git_path_bisect_terms(), "w");
if (!fp)
return error_errno(_("could not open the file BISECT_TERMS"));
res = fprintf(fp, "%s\n%s\n", bad, good);
res |= fclose(fp);
return (res < 0) ? -1 : 0;
}
static int mark_for_removal(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
struct string_list *refs = cb_data;
char *ref = xstrfmt("refs/bisect/%s", refname);
string_list_append(refs, ref);
return 0;
}
static int bisect_clean_state(void)
{
int result = 0;
/* There may be some refs packed during bisection */
struct string_list refs_for_removal = STRING_LIST_INIT_NODUP;
for_each_ref_in("refs/bisect/", mark_for_removal, (void *) &refs_for_removal);
string_list_append(&refs_for_removal, xstrdup("BISECT_HEAD"));
result = delete_refs(&refs_for_removal);
refs_for_removal.strdup_strings = 1;
string_list_clear(&refs_for_removal, 0);
remove_path(git_path_bisect_expected_rev());
remove_path(git_path_bisect_ancestors_ok());
remove_path(git_path_bisect_log());
remove_path(git_path_bisect_names());
remove_path(git_path_bisect_run());
remove_path(git_path_bisect_terms());
/* Cleanup head-name if it got left by an old version of git-bisect */
remove_path(git_path_head_name());
/*
* Cleanup BISECT_START last to support the --no-checkout option
* introduced in the commit 4796e823a.
*/
remove_path(git_path_bisect_start());
return result;
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
NEXT_ALL = 1,
WRITE_TERMS,
BISECT_CLEAN_STATE
} cmdmode = 0;
int no_checkout = 0;
struct option options[] = {
OPT_CMDMODE(0, "next-all", &cmdmode,
N_("perform 'git bisect next'"), NEXT_ALL),
OPT_CMDMODE(0, "write-terms", &cmdmode,
N_("write the terms to .git/BISECT_TERMS"), WRITE_TERMS),
OPT_CMDMODE(0, "bisect-clean-state", &cmdmode,
N_("cleanup the bisection state"), BISECT_CLEAN_STATE),
OPT_BOOL(0, "no-checkout", &no_checkout,
N_("update BISECT_HEAD instead of checking out the current commit")),
OPT_END()
};
argc = parse_options(argc, argv, prefix, options,
git_bisect_helper_usage, 0);
if (!cmdmode)
usage_with_options(git_bisect_helper_usage, options);
switch (cmdmode) {
case NEXT_ALL:
return bisect_next_all(prefix, no_checkout);
case WRITE_TERMS:
if (argc != 2)
die(_("--write-terms requires two arguments"));
return write_terms(argv[0], argv[1]);
case BISECT_CLEAN_STATE:
if (argc != 0)
die(_("--bisect-clean-state requires no arguments"));
return bisect_clean_state();
default:
die("BUG: unknown subcommand '%d'", cmdmode);
}
return 0;
}
|