Merge branch 'mk/http-backend-kill-children-before-exit'
[git] / builtin / interpret-trailers.c
1 /*
2  * Builtin "git interpret-trailers"
3  *
4  * Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org>
5  *
6  */
7
8 #include "cache.h"
9 #include "builtin.h"
10 #include "parse-options.h"
11 #include "string-list.h"
12 #include "trailer.h"
13
14 static const char * const git_interpret_trailers_usage[] = {
15         N_("git interpret-trailers [--in-place] [--trim-empty] [(--trailer <token>[(=|:)<value>])...] [<file>...]"),
16         NULL
17 };
18
19 static enum trailer_where where;
20 static enum trailer_if_exists if_exists;
21 static enum trailer_if_missing if_missing;
22
23 static int option_parse_where(const struct option *opt,
24                               const char *arg, int unset)
25 {
26         return trailer_set_where(&where, arg);
27 }
28
29 static int option_parse_if_exists(const struct option *opt,
30                                   const char *arg, int unset)
31 {
32         return trailer_set_if_exists(&if_exists, arg);
33 }
34
35 static int option_parse_if_missing(const struct option *opt,
36                                    const char *arg, int unset)
37 {
38         return trailer_set_if_missing(&if_missing, arg);
39 }
40
41 static void new_trailers_clear(struct list_head *trailers)
42 {
43         struct list_head *pos, *tmp;
44         struct new_trailer_item *item;
45
46         list_for_each_safe(pos, tmp, trailers) {
47                 item = list_entry(pos, struct new_trailer_item, list);
48                 list_del(pos);
49                 free(item);
50         }
51 }
52
53 static int option_parse_trailer(const struct option *opt,
54                                    const char *arg, int unset)
55 {
56         struct list_head *trailers = opt->value;
57         struct new_trailer_item *item;
58
59         if (unset) {
60                 new_trailers_clear(trailers);
61                 return 0;
62         }
63
64         if (!arg)
65                 return -1;
66
67         item = xmalloc(sizeof(*item));
68         item->text = arg;
69         item->where = where;
70         item->if_exists = if_exists;
71         item->if_missing = if_missing;
72         list_add_tail(&item->list, trailers);
73         return 0;
74 }
75
76 static int parse_opt_parse(const struct option *opt, const char *arg,
77                            int unset)
78 {
79         struct process_trailer_options *v = opt->value;
80         v->only_trailers = 1;
81         v->only_input = 1;
82         v->unfold = 1;
83         BUG_ON_OPT_NEG(unset);
84         BUG_ON_OPT_ARG(arg);
85         return 0;
86 }
87
88 int cmd_interpret_trailers(int argc, const char **argv, const char *prefix)
89 {
90         struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
91         LIST_HEAD(trailers);
92
93         struct option options[] = {
94                 OPT_BOOL(0, "in-place", &opts.in_place, N_("edit files in place")),
95                 OPT_BOOL(0, "trim-empty", &opts.trim_empty, N_("trim empty trailers")),
96
97                 OPT_CALLBACK(0, "where", NULL, N_("action"),
98                              N_("where to place the new trailer"), option_parse_where),
99                 OPT_CALLBACK(0, "if-exists", NULL, N_("action"),
100                              N_("action if trailer already exists"), option_parse_if_exists),
101                 OPT_CALLBACK(0, "if-missing", NULL, N_("action"),
102                              N_("action if trailer is missing"), option_parse_if_missing),
103
104                 OPT_BOOL(0, "only-trailers", &opts.only_trailers, N_("output only the trailers")),
105                 OPT_BOOL(0, "only-input", &opts.only_input, N_("do not apply config rules")),
106                 OPT_BOOL(0, "unfold", &opts.unfold, N_("join whitespace-continued values")),
107                 { OPTION_CALLBACK, 0, "parse", &opts, NULL, N_("set parsing options"),
108                         PARSE_OPT_NOARG | PARSE_OPT_NONEG, parse_opt_parse },
109                 OPT_BOOL(0, "no-divider", &opts.no_divider, N_("do not treat --- specially")),
110                 OPT_CALLBACK(0, "trailer", &trailers, N_("trailer"),
111                                 N_("trailer(s) to add"), option_parse_trailer),
112                 OPT_END()
113         };
114
115         argc = parse_options(argc, argv, prefix, options,
116                              git_interpret_trailers_usage, 0);
117
118         if (opts.only_input && !list_empty(&trailers))
119                 usage_msg_opt(
120                         _("--trailer with --only-input does not make sense"),
121                         git_interpret_trailers_usage,
122                         options);
123
124         if (argc) {
125                 int i;
126                 for (i = 0; i < argc; i++)
127                         process_trailers(argv[i], &opts, &trailers);
128         } else {
129                 if (opts.in_place)
130                         die(_("no input file given for in-place editing"));
131                 process_trailers(NULL, &opts, &trailers);
132         }
133
134         new_trailers_clear(&trailers);
135
136         return 0;
137 }