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, "sparse:oid=", &v0)) {
  53                 struct object_context oc;
  54                 struct object_id sparse_oid;
  55
  56                 /*
  57                  * Try to parse <oid-expression> into an OID for the current
  58                  * command, but DO NOT complain if we don't have the blob or
  59                  * ref locally.
  60                  */
  61                 if (!get_oid_with_context(v0, GET_OID_BLOB,
  62                                           &sparse_oid, &oc))
  63                         filter_options->sparse_oid_value = oiddup(&sparse_oid);
  64                 filter_options->choice = LOFC_SPARSE_OID;
  65                 return 0;
  66
  67         } else if (skip_prefix(arg, "sparse:path=", &v0)) {
  68                 filter_options->choice = LOFC_SPARSE_PATH;
  69                 filter_options->sparse_path_value = strdup(v0);
  70                 return 0;
  71         }
  72
  73         if (errbuf)
  74                 strbuf_addf(errbuf, "invalid filter-spec '%s'", arg);
  75
  76         memset(filter_options, 0, sizeof(*filter_options));
  77         return 1;
  78 }
  79
  80 int parse_list_objects_filter(struct list_objects_filter_options *filter_options,
  81                               const char *arg)
  82 {
  83         struct strbuf buf = STRBUF_INIT;
  84         if (gently_parse_list_objects_filter(filter_options, arg, &buf))
  85                 die("%s", buf.buf);
  86         return 0;
  87 }
  88
  89 int opt_parse_list_objects_filter(const struct option *opt,
  90                                   const char *arg, int unset)
  91 {
  92         struct list_objects_filter_options *filter_options = opt->value;
  93
  94         if (unset || !arg) {
  95                 list_objects_filter_set_no_filter(filter_options);
  96                 return 0;
  97         }
  98
  99         return parse_list_objects_filter(filter_options, arg);
 100 }
 101
 102 void list_objects_filter_release(
 103         struct list_objects_filter_options *filter_options)
 104 {
 105         free(filter_options->filter_spec);
 106         free(filter_options->sparse_oid_value);
 107         free(filter_options->sparse_path_value);
 108         memset(filter_options, 0, sizeof(*filter_options));
 109 }
 110
 111 void partial_clone_register(
 112         const char *remote,
 113         const struct list_objects_filter_options *filter_options)
 114 {
 115         /*
 116          * Record the name of the partial clone remote in the
 117          * config and in the global variable -- the latter is
 118          * used throughout to indicate that partial clone is
 119          * enabled and to expect missing objects.
 120          */
 121         if (repository_format_partial_clone &&
 122             *repository_format_partial_clone &&
 123             strcmp(remote, repository_format_partial_clone))
 124                 die(_("cannot change partial clone promisor remote"));
 125
 126         git_config_set("core.repositoryformatversion", "1");
 127         git_config_set("extensions.partialclone", remote);
 128
 129         repository_format_partial_clone = xstrdup(remote);
 130
 131         /*
 132          * Record the initial filter-spec in the config as
 133          * the default for subsequent fetches from this remote.
 134          */
 135         core_partial_clone_filter_default =
 136                 xstrdup(filter_options->filter_spec);
 137         git_config_set("core.partialclonefilter",
 138                        core_partial_clone_filter_default);
 139 }
 140
 141 void partial_clone_get_default_filter_spec(
 142         struct list_objects_filter_options *filter_options)
 143 {
 144         /*
 145          * Parse default value, but silently ignore it if it is invalid.
 146          */
 147         if (!core_partial_clone_filter_default)
 148                 return;
 149         gently_parse_list_objects_filter(filter_options,
 150                                          core_partial_clone_filter_default,
 151                                          NULL);
 152 }