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_addstr(
  34                                 errbuf,
  35                                 _("multiple filter-specs cannot be combined"));
  36                 }
  37                 return 1;
  38         }
  39
  40         filter_options->filter_spec = strdup(arg);
  41
  42         if (!strcmp(arg, "blob:none")) {
  43                 filter_options->choice = LOFC_BLOB_NONE;
  44                 return 0;
  45
  46         } else if (skip_prefix(arg, "blob:limit=", &v0)) {
  47                 if (git_parse_ulong(v0, &filter_options->blob_limit_value)) {
  48                         filter_options->choice = LOFC_BLOB_LIMIT;
  49                         return 0;
  50                 }
  51
  52         } else if (skip_prefix(arg, "tree:", &v0)) {
  53                 unsigned long depth;
  54                 if (!git_parse_ulong(v0, &depth) || depth != 0) {
  55                         if (errbuf) {
  56                                 strbuf_addstr(
  57                                         errbuf,
  58                                         _("only 'tree:0' is supported"));
  59                         }
  60                         return 1;
  61                 }
  62                 filter_options->choice = LOFC_TREE_NONE;
  63                 return 0;
  64
  65         } else if (skip_prefix(arg, "sparse:oid=", &v0)) {
  66                 struct object_context oc;
  67                 struct object_id sparse_oid;
  68
  69                 /*
  70                  * Try to parse <oid-expression> into an OID for the current
  71                  * command, but DO NOT complain if we don't have the blob or
  72                  * ref locally.
  73                  */
  74                 if (!get_oid_with_context(v0, GET_OID_BLOB,
  75                                           &sparse_oid, &oc))
  76                         filter_options->sparse_oid_value = oiddup(&sparse_oid);
  77                 filter_options->choice = LOFC_SPARSE_OID;
  78                 return 0;
  79
  80         } else if (skip_prefix(arg, "sparse:path=", &v0)) {
  81                 filter_options->choice = LOFC_SPARSE_PATH;
  82                 filter_options->sparse_path_value = strdup(v0);
  83                 return 0;
  84         }
  85
  86         if (errbuf)
  87                 strbuf_addf(errbuf, "invalid filter-spec '%s'", arg);
  88
  89         memset(filter_options, 0, sizeof(*filter_options));
  90         return 1;
  91 }
  92
  93 int parse_list_objects_filter(struct list_objects_filter_options *filter_options,
  94                               const char *arg)
  95 {
  96         struct strbuf buf = STRBUF_INIT;
  97         if (gently_parse_list_objects_filter(filter_options, arg, &buf))
  98                 die("%s", buf.buf);
  99         return 0;
 100 }
 101
 102 int opt_parse_list_objects_filter(const struct option *opt,
 103                                   const char *arg, int unset)
 104 {
 105         struct list_objects_filter_options *filter_options = opt->value;
 106
 107         if (unset || !arg) {
 108                 list_objects_filter_set_no_filter(filter_options);
 109                 return 0;
 110         }
 111
 112         return parse_list_objects_filter(filter_options, arg);
 113 }
 114
 115 void list_objects_filter_release(
 116         struct list_objects_filter_options *filter_options)
 117 {
 118         free(filter_options->filter_spec);
 119         free(filter_options->sparse_oid_value);
 120         free(filter_options->sparse_path_value);
 121         memset(filter_options, 0, sizeof(*filter_options));
 122 }
 123
 124 void partial_clone_register(
 125         const char *remote,
 126         const struct list_objects_filter_options *filter_options)
 127 {
 128         /*
 129          * Record the name of the partial clone remote in the
 130          * config and in the global variable -- the latter is
 131          * used throughout to indicate that partial clone is
 132          * enabled and to expect missing objects.
 133          */
 134         if (repository_format_partial_clone &&
 135             *repository_format_partial_clone &&
 136             strcmp(remote, repository_format_partial_clone))
 137                 die(_("cannot change partial clone promisor remote"));
 138
 139         git_config_set("core.repositoryformatversion", "1");
 140         git_config_set("extensions.partialclone", remote);
 141
 142         repository_format_partial_clone = xstrdup(remote);
 143
 144         /*
 145          * Record the initial filter-spec in the config as
 146          * the default for subsequent fetches from this remote.
 147          */
 148         core_partial_clone_filter_default =
 149                 xstrdup(filter_options->filter_spec);
 150         git_config_set("core.partialclonefilter",
 151                        core_partial_clone_filter_default);
 152 }
 153
 154 void partial_clone_get_default_filter_spec(
 155         struct list_objects_filter_options *filter_options)
 156 {
 157         /*
 158          * Parse default value, but silently ignore it if it is invalid.
 159          */
 160         if (!core_partial_clone_filter_default)
 161                 return;
 162         gently_parse_list_objects_filter(filter_options,
 163                                          core_partial_clone_filter_default,
 164                                          NULL);
 165 }