fix build error, add c# wrapper class

Tino Hager

2018-06-24 b2c03b1615535dc717e196c560901e9e420c96d6

 src/utils.c

@@ -206,12 +206,15 @@
}

void replace_image_to_label(char *input_path, char *output_path) {
   //find_replace(input_path, "images", "labels", output_path);   // COCO
   find_replace(input_path, "images/train2014/", "labels/train2014/", output_path); // COCO
   find_replace(output_path, "images/val2014/", "labels/val2014/", output_path);    // COCO
   //find_replace(output_path, "JPEGImages", "labels", output_path); // PascalVOC
   find_replace(output_path, "VOC2007/JPEGImages", "VOC2007/labels", output_path);     // PascalVOC
   find_replace(output_path, "VOC2012/JPEGImages", "VOC2012/labels", output_path);     // PascalVOC
   //find_replace(input_path, "/images/", "/labels/", output_path);  // COCO
   find_replace(input_path, "/images/train2014/", "/labels/train2014/", output_path);  // COCO
   find_replace(output_path, "/images/val2014/", "/labels/val2014/", output_path);     // COCO
   find_replace(output_path, "/JPEGImages/", "/labels/", output_path);  // PascalVOC
   //find_replace(output_path, "/VOC2007/JPEGImages/", "/VOC2007/labels/", output_path);     // PascalVOC
   //find_replace(output_path, "/VOC2012/JPEGImages/", "/VOC2012/labels/", output_path);     // PascalVOC

   //find_replace(output_path, "/raw/", "/labels/", output_path);

   // replace only ext of files
   find_replace_extension(output_path, ".jpg", ".txt", output_path);
   find_replace_extension(output_path, ".JPG", ".txt", output_path); // error
@@ -293,6 +296,20 @@
    s[len-offset] = '\0';
}


void strip_args(char *s)
{
   size_t i;
   size_t len = strlen(s);
   size_t offset = 0;
   for (i = 0; i < len; ++i) {
      char c = s[i];
      if (c == '\t' || c == '\n' || c == '\r' || c == 0x0d || c == 0x0a) ++offset;
      else s[i - offset] = c;
   }
   s[len - offset] = '\0';
}

void strip_char(char *s, char bad)
{
    size_t i;