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 }