Allow command-line argument to fuzzy matcher for output file.

third_party/fuzzymatch/fuzzymatch.c

 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /* Fuzzy pixel test matching.
  *
  * This is designed to compare two layout test images (RGB 800x600) and manage
  * to ignore the noise caused by the font renderers choosing slightly different
  * pixels.
  *
@@ skipping 35 matching lines @@
  *     consideration
  */
 
 #include <unistd.h>
 #include <stdio.h>
 #include <leptonica/allheaders.h>
 
 static int
 usage(const char *argv0) {
   fprintf(stderr, "Usage: %s [--highlight] [--no-ignore-scrollbars] "
+                  "[--output filename] "
                   "<input a> <input b>\n", argv0);
   return 1;
 }
 
 int
 main(int argc, char **argv) {
   if (argc < 3)
     return usage(argv[0]);
 
   char highlight = 0;
   char ignore_scrollbars = 1;
+  char *output_filename = "highlight.png";  /* Default output filename. */

[agl, 2008/12/17 03:18:58]

const

 
   int argi = 1;
 
   for (; argi < argc; ++argi) {
     if (strcmp("--highlight", argv[argi]) == 0) {
       highlight = 1;
     } else if (strcmp("--no-ignore-scrollbars", argv[argi]) == 0) {
       ignore_scrollbars = 0;
+    } else if (strcmp("--output", argv[argi]) == 0) {
+      output_filename = argv[++argi];

[agl, 2008/12/17 03:18:58]

if (argi + 1 >= argc) {
  fprintf(stderr, "--output..."..

     } else {
       break;
     }
   }
 
   if (argc - argi < 2)
     return usage(argv[0]);
 
   PIX *a = pixRead(argv[argi]);
   PIX *b = pixRead(argv[argi + 1]);
@@ skipping 50 matching lines @@
   l_int32 count;
   pixCountPixels(opened, &count, NULL);
   fprintf(stderr, "%d\n", count);
 
   if (count && highlight) {
     PIX *d1 = pixDilateBrick(NULL, opened, 7, 7);
     PIX *d2 = pixDilateBrick(NULL, opened, 3, 3);
     pixInvert(d2, d2);
     pixAnd(d1, d1, d2);
     pixPaintThroughMask(a, d1, 0, 0, 0xff << 24);
-    pixWrite("highlight.png", a, IFF_PNG);
+    pixWrite(output_filename, a, IFF_PNG);
   }
 
   return count > 0;
 }