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
|
/*
* Builtin "git pull"
*
* Based on git-pull.sh by Junio C Hamano
*
* Fetch one or more remote refs and merge it/them into the current HEAD.
*/
#include "cache.h"
#include "builtin.h"
#include "parse-options.h"
#include "exec_cmd.h"
#include "run-command.h"
static const char * const pull_usage[] = {
N_("git pull [options] [<repository> [<refspec>...]]"),
NULL
};
/* Shared options */
static int opt_verbosity;
static char *opt_progress;
static struct option pull_options[] = {
/* Shared options */
OPT__VERBOSITY(&opt_verbosity),
OPT_PASSTHRU(0, "progress", &opt_progress, NULL,
N_("force progress reporting"),
PARSE_OPT_NOARG),
OPT_END()
};
/**
* Pushes "-q" or "-v" switches into arr to match the opt_verbosity level.
*/
static void argv_push_verbosity(struct argv_array *arr)
{
int verbosity;
for (verbosity = opt_verbosity; verbosity > 0; verbosity--)
argv_array_push(arr, "-v");
for (verbosity = opt_verbosity; verbosity < 0; verbosity++)
argv_array_push(arr, "-q");
}
/**
* Parses argv into [<repo> [<refspecs>...]], returning their values in `repo`
* as a string and `refspecs` as a null-terminated array of strings. If `repo`
* is not provided in argv, it is set to NULL.
*/
static void parse_repo_refspecs(int argc, const char **argv, const char **repo,
const char ***refspecs)
{
if (argc > 0) {
*repo = *argv++;
argc--;
} else
*repo = NULL;
*refspecs = argv;
}
/**
* Runs git-fetch, returning its exit status. `repo` and `refspecs` are the
* repository and refspecs to fetch, or NULL if they are not provided.
*/
static int run_fetch(const char *repo, const char **refspecs)
{
struct argv_array args = ARGV_ARRAY_INIT;
int ret;
argv_array_pushl(&args, "fetch", "--update-head-ok", NULL);
/* Shared options */
argv_push_verbosity(&args);
if (opt_progress)
argv_array_push(&args, opt_progress);
if (repo) {
argv_array_push(&args, repo);
argv_array_pushv(&args, refspecs);
} else if (*refspecs)
die("BUG: refspecs without repo?");
ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
argv_array_clear(&args);
return ret;
}
/**
* Runs git-merge, returning its exit status.
*/
static int run_merge(void)
{
int ret;
struct argv_array args = ARGV_ARRAY_INIT;
argv_array_pushl(&args, "merge", NULL);
/* Shared options */
argv_push_verbosity(&args);
if (opt_progress)
argv_array_push(&args, opt_progress);
argv_array_push(&args, "FETCH_HEAD");
ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
argv_array_clear(&args);
return ret;
}
int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
if (!getenv("_GIT_USE_BUILTIN_PULL")) {
const char *path = mkpath("%s/git-pull", git_exec_path());
if (sane_execvp(path, (char **)argv) < 0)
die_errno("could not exec %s", path);
}
argc = parse_options(argc, argv, prefix, pull_options, pull_usage, 0);
parse_repo_refspecs(argc, argv, &repo, &refspecs);
if (run_fetch(repo, refspecs))
return 1;
return run_merge();
}
|
