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
   8struct path_spec {
   9        const char *spec;
  10        int len;
  11};
  12
  13static int matches_pathspec(const char *name, struct path_spec *s, int cnt)
  14{
  15        int i;
  16        int namelen;
  17
  18        if (cnt == 0)
  19                return 1;
  20
  21        namelen = strlen(name);
  22        for (i = 0; i < cnt; i++) {
  23                int len = s[i].len;
  24                if (! strncmp(s[i].spec, name, len) &&
  25                    len <= namelen &&
  26                    (name[len] == 0 || name[len] == '/'))
  27                        return 1;
  28        }
  29        return 0;
  30}
  31
  32void diffcore_pathspec(const char **pathspec)
  33{
  34        struct diff_queue_struct *q = &diff_queued_diff;
  35        int i, speccnt;
  36        struct diff_queue_struct outq;
  37        struct path_spec *spec;
  38
  39        outq.queue = NULL;
  40        outq.nr = outq.alloc = 0;
  41
  42        for (i = 0; pathspec[i]; i++)
  43                ;
  44        speccnt = i;
  45        spec = xmalloc(sizeof(*spec) * speccnt);
  46        for (i = 0; pathspec[i]; i++) {
  47                int l;
  48                spec[i].spec = pathspec[i];
  49                l = strlen(pathspec[i]);
  50                while (l > 0 && pathspec[i][l-1] == '/')
  51                        l--;
  52                spec[i].len = l;
  53        }
  54
  55        for (i = 0; i < q->nr; i++) {
  56                struct diff_filepair *p = q->queue[i];
  57                if (matches_pathspec(p->two->path, spec, speccnt))
  58                        diff_q(&outq, p);
  59                else
  60                        diff_free_filepair(p);
  61        }
  62        free(q->queue);
  63        *q = outq;
  64        return;
  65}