Imported from libpng-0.81.tar

pngerror.c

@@ -0,0 +1,46 @@
+
+/* pngstub.c - stub functions for i/o and memory allocation
+
+   libpng 1.0 beta 2 - version 0.81
+   For conditions of distribution and use, see copyright notice in png.h
+   Copyright (c) 1995 Guy Eric Schalnat, Group 42, Inc.
+   August 24, 1995
+
+   This file provides a location for all error handling.  Users which
+   need special error handling are expected to modify the code in this
+   file to meet their needs.  See the instructions at each function. */
+
+#define PNG_INTERNAL
+#include "png.h"
+
+/* This function is called whenever there is an error.  Replace with
+   however you wish to handle the error.  Note that this function
+   MUST NOT return, or the program will crash */
+void
+png_error(png_structf *png_ptr, char *message)
+{
+   fprintf(stderr, "libpng error: %s\n", message);
+#ifdef USE_FAR_KEYWORD
+   {
+      jmp_buf jmpbuf;
+      png_memcpy(jmpbuf,png_ptr->jmpbuf,sizeof(jmp_buf));
+      longjmp(jmpbuf, 1);
+   }
+#else
+   longjmp(png_ptr->jmpbuf, 1);
+#endif
+}
+
+/* This function is called when there is a warning, but the library
+   thinks it can continue anyway.  You don't have to do anything here
+   if you don't want to.  In the default configuration, png_ptr is
+   not used, but it is passed in case it may be useful. */
+void
+png_warning(png_struct *png_ptr, char *message)
+{
+   if (!png_ptr)
+      return;
+
+   fprintf(stderr, "libpng warning: %s\n", message);
+}
+