Andrew's git - gitweb.git/blob - diffcore-pathspec.c

   1/*
   2 * Copyright (C) 2005 Junio C Hamano
   3 */
   4#include "cache.h"
   5#include "diff.h"
   6#include "diffcore.h"
   7#include "delta.h"
   8
   9struct path_spec {
  10        const char *spec;
  11        int len;
  12};
  13
  14static int matches_pathspec(const char *name, struct path_spec *s, int cnt)
  15{
  16        int i;
  17        int namelen;
  18
  19        if (cnt == 0)
  20                return 1;
  21
  22        namelen = strlen(name);
  23        for (i = 0; i < cnt; i++) {
  24                int len = s->len;
  25                if (! strncmp(s->spec, name, len) &&
  26                    len <= namelen &&
  27                    (name[len] == 0 || name[len] == '/'))
  28                        return 1;
  29        }
  30        return 0;
  31}
  32
  33void diffcore_pathspec(const char **pathspec)
  34{
  35        struct diff_queue_struct *q = &diff_queued_diff;
  36        int i, speccnt;
  37        struct diff_queue_struct outq;
  38        struct path_spec *spec;
  39
  40        outq.queue = NULL;
  41        outq.nr = outq.alloc = 0;
  42
  43        for (i = 0; pathspec[i]; i++)
  44                ;
  45        speccnt = i;
  46        spec = xmalloc(sizeof(*spec) * speccnt);
  47        for (i = 0; pathspec[i]; i++) {
  48                spec[i].spec = pathspec[i];
  49                spec[i].len = strlen(pathspec[i]);
  50        }
  51
  52        for (i = 0; i < q->nr; i++) {
  53                struct diff_filepair *p = q->queue[i];
  54                if (matches_pathspec(p->one->path, spec, speccnt) ||
  55                    matches_pathspec(p->two->path, spec, speccnt))
  56                        diff_q(&outq, p);
  57                else
  58                        free(p);
  59        }
  60        free(q->queue);
  61        *q = outq;
  62        return;
  63}