object-store: migrate alternates struct and functions from cache.h
[git] / list-objects-filter-options.c
1 #include "cache.h"
2 #include "commit.h"
3 #include "config.h"
4 #include "revision.h"
5 #include "argv-array.h"
6 #include "list-objects.h"
7 #include "list-objects-filter.h"
8 #include "list-objects-filter-options.h"
9
10 /*
11  * Parse value of the argument to the "filter" keyword.
12  * On the command line this looks like:
13  *       --filter=<arg>
14  * and in the pack protocol as:
15  *       "filter" SP <arg>
16  *
17  * The filter keyword will be used by many commands.
18  * See Documentation/rev-list-options.txt for allowed values for <arg>.
19  *
20  * Capture the given arg as the "filter_spec".  This can be forwarded to
21  * subordinate commands when necessary.  We also "intern" the arg for
22  * the convenience of the current command.
23  */
24 static int gently_parse_list_objects_filter(
25         struct list_objects_filter_options *filter_options,
26         const char *arg,
27         struct strbuf *errbuf)
28 {
29         const char *v0;
30
31         if (filter_options->choice) {
32                 if (errbuf) {
33                         strbuf_init(errbuf, 0);
34                         strbuf_addstr(
35                                 errbuf,
36                                 _("multiple filter-specs cannot be combined"));
37                 }
38                 return 1;
39         }
40
41         filter_options->filter_spec = strdup(arg);
42
43         if (!strcmp(arg, "blob:none")) {
44                 filter_options->choice = LOFC_BLOB_NONE;
45                 return 0;
46
47         } else if (skip_prefix(arg, "blob:limit=", &v0)) {
48                 if (git_parse_ulong(v0, &filter_options->blob_limit_value)) {
49                         filter_options->choice = LOFC_BLOB_LIMIT;
50                         return 0;
51                 }
52
53         } else if (skip_prefix(arg, "sparse:oid=", &v0)) {
54                 struct object_context oc;
55                 struct object_id sparse_oid;
56
57                 /*
58                  * Try to parse <oid-expression> into an OID for the current
59                  * command, but DO NOT complain if we don't have the blob or
60                  * ref locally.
61                  */
62                 if (!get_oid_with_context(v0, GET_OID_BLOB,
63                                           &sparse_oid, &oc))
64                         filter_options->sparse_oid_value = oiddup(&sparse_oid);
65                 filter_options->choice = LOFC_SPARSE_OID;
66                 return 0;
67
68         } else if (skip_prefix(arg, "sparse:path=", &v0)) {
69                 filter_options->choice = LOFC_SPARSE_PATH;
70                 filter_options->sparse_path_value = strdup(v0);
71                 return 0;
72         }
73
74         if (errbuf) {
75                 strbuf_init(errbuf, 0);
76                 strbuf_addf(errbuf, "invalid filter-spec '%s'", arg);
77         }
78         memset(filter_options, 0, sizeof(*filter_options));
79         return 1;
80 }
81
82 int parse_list_objects_filter(struct list_objects_filter_options *filter_options,
83                               const char *arg)
84 {
85         struct strbuf buf = STRBUF_INIT;
86         if (gently_parse_list_objects_filter(filter_options, arg, &buf))
87                 die("%s", buf.buf);
88         return 0;
89 }
90
91 int opt_parse_list_objects_filter(const struct option *opt,
92                                   const char *arg, int unset)
93 {
94         struct list_objects_filter_options *filter_options = opt->value;
95
96         if (unset || !arg) {
97                 list_objects_filter_set_no_filter(filter_options);
98                 return 0;
99         }
100
101         return parse_list_objects_filter(filter_options, arg);
102 }
103
104 void list_objects_filter_release(
105         struct list_objects_filter_options *filter_options)
106 {
107         free(filter_options->filter_spec);
108         free(filter_options->sparse_oid_value);
109         free(filter_options->sparse_path_value);
110         memset(filter_options, 0, sizeof(*filter_options));
111 }
112
113 void partial_clone_register(
114         const char *remote,
115         const struct list_objects_filter_options *filter_options)
116 {
117         /*
118          * Record the name of the partial clone remote in the
119          * config and in the global variable -- the latter is
120          * used throughout to indicate that partial clone is
121          * enabled and to expect missing objects.
122          */
123         if (repository_format_partial_clone &&
124             *repository_format_partial_clone &&
125             strcmp(remote, repository_format_partial_clone))
126                 die(_("cannot change partial clone promisor remote"));
127
128         git_config_set("core.repositoryformatversion", "1");
129         git_config_set("extensions.partialclone", remote);
130
131         repository_format_partial_clone = xstrdup(remote);
132
133         /*
134          * Record the initial filter-spec in the config as
135          * the default for subsequent fetches from this remote.
136          */
137         core_partial_clone_filter_default =
138                 xstrdup(filter_options->filter_spec);
139         git_config_set("core.partialclonefilter",
140                        core_partial_clone_filter_default);
141 }
142
143 void partial_clone_get_default_filter_spec(
144         struct list_objects_filter_options *filter_options)
145 {
146         /*
147          * Parse default value, but silently ignore it if it is invalid.
148          */
149         gently_parse_list_objects_filter(filter_options,
150                                          core_partial_clone_filter_default,
151                                          NULL);
152 }