Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "dir.h"
   3#include "pathspec.h"
   4
   5/*
   6 * Finds which of the given pathspecs match items in the index.
   7 *
   8 * For each pathspec, sets the corresponding entry in the seen[] array
   9 * (which should be specs items long, i.e. the same size as pathspec)
  10 * to the nature of the "closest" (i.e. most specific) match found for
  11 * that pathspec in the index, if it was a closer type of match than
  12 * the existing entry.  As an optimization, matching is skipped
  13 * altogether if seen[] already only contains non-zero entries.
  14 *
  15 * If seen[] has not already been written to, it may make sense
  16 * to use find_pathspecs_matching_against_index() instead.
  17 */
  18void add_pathspec_matches_against_index(const char **pathspec,
  19                                        char *seen, int specs)
  20{
  21        int num_unmatched = 0, i;
  22
  23        /*
  24         * Since we are walking the index as if we were walking the directory,
  25         * we have to mark the matched pathspec as seen; otherwise we will
  26         * mistakenly think that the user gave a pathspec that did not match
  27         * anything.
  28         */
  29        for (i = 0; i < specs; i++)
  30                if (!seen[i])
  31                        num_unmatched++;
  32        if (!num_unmatched)
  33                return;
  34        for (i = 0; i < active_nr; i++) {
  35                struct cache_entry *ce = active_cache[i];
  36                match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
  37        }
  38}
  39
  40/*
  41 * Finds which of the given pathspecs match items in the index.
  42 *
  43 * This is a one-shot wrapper around add_pathspec_matches_against_index()
  44 * which allocates, populates, and returns a seen[] array indicating the
  45 * nature of the "closest" (i.e. most specific) matches which each of the
  46 * given pathspecs achieves against all items in the index.
  47 */
  48char *find_pathspecs_matching_against_index(const char **pathspec)
  49{
  50        char *seen;
  51        int i;
  52
  53        for (i = 0; pathspec[i];  i++)
  54                ; /* just counting */
  55        seen = xcalloc(i, 1);
  56        add_pathspec_matches_against_index(pathspec, seen, i);
  57        return seen;
  58}