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Update libpng to 1.2.50 so it can be built with Clang 3.2
This commit is contained in:
Ryan Houdek
843
Externals/libpng/pngerror.c
vendored
843
Externals/libpng/pngerror.c
vendored
@ -1,447 +1,396 @@
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/* pngerror.c - stub functions for i/o and memory allocation
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*
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* Last changed in libpng 1.5.1 [February 3, 2011]
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* Copyright (c) 1998-2011 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*
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* This file provides a location for all error handling. Users who
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* need special error handling are expected to write replacement functions
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* and use png_set_error_fn() to use those functions. See the instructions
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* at each function.
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*/
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#include "pngpriv.h"
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#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
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static PNG_FUNCTION(void, png_default_error,PNGARG((png_structp png_ptr,
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png_const_charp error_message)),PNG_NORETURN);
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#ifdef PNG_WARNINGS_SUPPORTED
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static void /* PRIVATE */
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png_default_warning PNGARG((png_structp png_ptr,
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png_const_charp warning_message));
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#endif /* PNG_WARNINGS_SUPPORTED */
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/* This function is called whenever there is a fatal error. This function
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* should not be changed. If there is a need to handle errors differently,
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* you should supply a replacement error function and use png_set_error_fn()
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* to replace the error function at run-time.
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*/
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#ifdef PNG_ERROR_TEXT_SUPPORTED
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PNG_FUNCTION(void,PNGAPI
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png_error,(png_structp png_ptr, png_const_charp error_message),PNG_NORETURN)
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{
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#ifdef PNG_ERROR_NUMBERS_SUPPORTED
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char msg[16];
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if (png_ptr != NULL)
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{
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if (png_ptr->flags&
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(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
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{
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if (*error_message == PNG_LITERAL_SHARP)
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{
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/* Strip "#nnnn " from beginning of error message. */
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int offset;
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for (offset = 1; offset<15; offset++)
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if (error_message[offset] == ' ')
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break;
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if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
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{
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int i;
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for (i = 0; i < offset - 1; i++)
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msg[i] = error_message[i + 1];
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msg[i - 1] = '\0';
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error_message = msg;
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}
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else
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error_message += offset;
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}
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else
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{
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if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
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{
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msg[0] = '0';
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msg[1] = '\0';
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error_message = msg;
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}
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}
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}
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}
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#endif
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if (png_ptr != NULL && png_ptr->error_fn != NULL)
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(*(png_ptr->error_fn))(png_ptr, error_message);
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/* If the custom handler doesn't exist, or if it returns,
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use the default handler, which will not return. */
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png_default_error(png_ptr, error_message);
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}
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#else
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PNG_FUNCTION(void,PNGAPI
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png_err,(png_structp png_ptr),PNG_NORETURN)
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{
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if (png_ptr != NULL && png_ptr->error_fn != NULL)
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(*(png_ptr->error_fn))(png_ptr, '\0');
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/* If the custom handler doesn't exist, or if it returns,
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use the default handler, which will not return. */
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png_default_error(png_ptr, '\0');
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}
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#endif /* PNG_ERROR_TEXT_SUPPORTED */
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#ifdef PNG_WARNINGS_SUPPORTED
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/* This function is called whenever there is a non-fatal error. This function
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* should not be changed. If there is a need to handle warnings differently,
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* you should supply a replacement warning function and use
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* png_set_error_fn() to replace the warning function at run-time.
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*/
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void PNGAPI
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png_warning(png_structp png_ptr, png_const_charp warning_message)
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{
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int offset = 0;
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if (png_ptr != NULL)
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{
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#ifdef PNG_ERROR_NUMBERS_SUPPORTED
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if (png_ptr->flags&
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(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
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#endif
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{
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if (*warning_message == PNG_LITERAL_SHARP)
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{
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for (offset = 1; offset < 15; offset++)
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if (warning_message[offset] == ' ')
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break;
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}
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}
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}
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if (png_ptr != NULL && png_ptr->warning_fn != NULL)
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(*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
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else
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png_default_warning(png_ptr, warning_message + offset);
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}
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#endif /* PNG_WARNINGS_SUPPORTED */
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#ifdef PNG_BENIGN_ERRORS_SUPPORTED
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void PNGAPI
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png_benign_error(png_structp png_ptr, png_const_charp error_message)
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{
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if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
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png_warning(png_ptr, error_message);
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else
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png_error(png_ptr, error_message);
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}
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#endif
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/* These utilities are used internally to build an error message that relates
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* to the current chunk. The chunk name comes from png_ptr->chunk_name,
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* this is used to prefix the message. The message is limited in length
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* to 63 bytes, the name characters are output as hex digits wrapped in []
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* if the character is invalid.
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*/
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#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
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static PNG_CONST char png_digit[16] = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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'A', 'B', 'C', 'D', 'E', 'F'
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};
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#define PNG_MAX_ERROR_TEXT 64
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#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
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static void /* PRIVATE */
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png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
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error_message)
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{
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int iout = 0, iin = 0;
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while (iin < 4)
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{
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int c = png_ptr->chunk_name[iin++];
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if (isnonalpha(c))
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{
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buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
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buffer[iout++] = png_digit[(c & 0xf0) >> 4];
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buffer[iout++] = png_digit[c & 0x0f];
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buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
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}
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else
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{
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buffer[iout++] = (png_byte)c;
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}
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}
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if (error_message == NULL)
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buffer[iout] = '\0';
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else
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{
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buffer[iout++] = ':';
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buffer[iout++] = ' ';
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png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
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buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
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}
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}
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#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
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#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
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PNG_FUNCTION(void,PNGAPI
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png_chunk_error,(png_structp png_ptr, png_const_charp error_message),
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PNG_NORETURN)
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{
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char msg[18+PNG_MAX_ERROR_TEXT];
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if (png_ptr == NULL)
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png_error(png_ptr, error_message);
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else
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{
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png_format_buffer(png_ptr, msg, error_message);
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png_error(png_ptr, msg);
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}
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}
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#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
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#ifdef PNG_WARNINGS_SUPPORTED
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void PNGAPI
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png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
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{
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char msg[18+PNG_MAX_ERROR_TEXT];
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if (png_ptr == NULL)
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png_warning(png_ptr, warning_message);
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else
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{
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png_format_buffer(png_ptr, msg, warning_message);
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png_warning(png_ptr, msg);
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}
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}
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#endif /* PNG_WARNINGS_SUPPORTED */
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#ifdef PNG_READ_SUPPORTED
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#ifdef PNG_BENIGN_ERRORS_SUPPORTED
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void PNGAPI
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png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
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{
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if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
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png_chunk_warning(png_ptr, error_message);
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else
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png_chunk_error(png_ptr, error_message);
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}
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#endif
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#endif /* PNG_READ_SUPPORTED */
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#ifdef PNG_ERROR_TEXT_SUPPORTED
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#ifdef PNG_FLOATING_POINT_SUPPORTED
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PNG_FUNCTION(void,
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png_fixed_error,(png_structp png_ptr, png_const_charp name),PNG_NORETURN)
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{
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# define fixed_message "fixed point overflow in "
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# define fixed_message_ln ((sizeof fixed_message)-1)
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int iin;
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char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
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png_memcpy(msg, fixed_message, fixed_message_ln);
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iin = 0;
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if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
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{
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msg[fixed_message_ln + iin] = name[iin];
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++iin;
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}
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msg[fixed_message_ln + iin] = 0;
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png_error(png_ptr, msg);
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}
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#endif
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#endif
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#ifdef PNG_SETJMP_SUPPORTED
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/* This API only exists if ANSI-C style error handling is used,
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* otherwise it is necessary for png_default_error to be overridden.
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*/
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jmp_buf* PNGAPI
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png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
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size_t jmp_buf_size)
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{
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if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
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return NULL;
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png_ptr->longjmp_fn = longjmp_fn;
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return &png_ptr->png_jmpbuf;
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}
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#endif
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/* This is the default error handling function. Note that replacements for
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* this function MUST NOT RETURN, or the program will likely crash. This
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* function is used by default, or if the program supplies NULL for the
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* error function pointer in png_set_error_fn().
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*/
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static PNG_FUNCTION(void /* PRIVATE */,
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png_default_error,(png_structp png_ptr, png_const_charp error_message),
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PNG_NORETURN)
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{
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#ifdef PNG_CONSOLE_IO_SUPPORTED
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#ifdef PNG_ERROR_NUMBERS_SUPPORTED
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if (*error_message == PNG_LITERAL_SHARP)
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{
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/* Strip "#nnnn " from beginning of error message. */
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int offset;
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char error_number[16];
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for (offset = 0; offset<15; offset++)
|
||||
{
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error_number[offset] = error_message[offset + 1];
|
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if (error_message[offset] == ' ')
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break;
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}
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if ((offset > 1) && (offset < 15))
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{
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error_number[offset - 1] = '\0';
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fprintf(stderr, "libpng error no. %s: %s",
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error_number, error_message + offset + 1);
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fprintf(stderr, PNG_STRING_NEWLINE);
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}
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else
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{
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fprintf(stderr, "libpng error: %s, offset=%d",
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error_message, offset);
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fprintf(stderr, PNG_STRING_NEWLINE);
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}
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}
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else
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#endif
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{
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fprintf(stderr, "libpng error: %s", error_message);
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fprintf(stderr, PNG_STRING_NEWLINE);
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}
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#endif
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#ifndef PNG_CONSOLE_IO_SUPPORTED
|
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PNG_UNUSED(error_message) /* Make compiler happy */
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#endif
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png_longjmp(png_ptr, 1);
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}
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|
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PNG_FUNCTION(void,PNGAPI
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png_longjmp,(png_structp png_ptr, int val),PNG_NORETURN)
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{
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||||
#ifdef PNG_SETJMP_SUPPORTED
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if (png_ptr && png_ptr->longjmp_fn)
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{
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||||
# ifdef USE_FAR_KEYWORD
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||||
{
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jmp_buf png_jmpbuf;
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png_memcpy(png_jmpbuf, png_ptr->png_jmpbuf, png_sizeof(jmp_buf));
|
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png_ptr->longjmp_fn(png_jmpbuf, val);
|
||||
}
|
||||
|
||||
# else
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||||
png_ptr->longjmp_fn(png_ptr->png_jmpbuf, val);
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
/* Here if not setjmp support or if png_ptr is null. */
|
||||
PNG_ABORT();
|
||||
}
|
||||
|
||||
#ifdef PNG_WARNINGS_SUPPORTED
|
||||
/* This function is called when there is a warning, but the library thinks
|
||||
* it can continue anyway. Replacement functions don't have to do anything
|
||||
* here if you don't want them to. In the default configuration, png_ptr is
|
||||
* not used, but it is passed in case it may be useful.
|
||||
*/
|
||||
static void /* PRIVATE */
|
||||
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
|
||||
{
|
||||
#ifdef PNG_CONSOLE_IO_SUPPORTED
|
||||
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
if (*warning_message == PNG_LITERAL_SHARP)
|
||||
{
|
||||
int offset;
|
||||
char warning_number[16];
|
||||
for (offset = 0; offset < 15; offset++)
|
||||
{
|
||||
warning_number[offset] = warning_message[offset + 1];
|
||||
if (warning_message[offset] == ' ')
|
||||
break;
|
||||
}
|
||||
|
||||
if ((offset > 1) && (offset < 15))
|
||||
{
|
||||
warning_number[offset + 1] = '\0';
|
||||
fprintf(stderr, "libpng warning no. %s: %s",
|
||||
warning_number, warning_message + offset);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
|
||||
else
|
||||
{
|
||||
fprintf(stderr, "libpng warning: %s",
|
||||
warning_message);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
}
|
||||
else
|
||||
# endif
|
||||
|
||||
{
|
||||
fprintf(stderr, "libpng warning: %s", warning_message);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
#else
|
||||
PNG_UNUSED(warning_message) /* Make compiler happy */
|
||||
#endif
|
||||
PNG_UNUSED(png_ptr) /* Make compiler happy */
|
||||
}
|
||||
#endif /* PNG_WARNINGS_SUPPORTED */
|
||||
|
||||
/* This function is called when the application wants to use another method
|
||||
* of handling errors and warnings. Note that the error function MUST NOT
|
||||
* return to the calling routine or serious problems will occur. The return
|
||||
* method used in the default routine calls longjmp(png_ptr->png_jmpbuf, 1)
|
||||
*/
|
||||
void PNGAPI
|
||||
png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
|
||||
png_error_ptr error_fn, png_error_ptr warning_fn)
|
||||
{
|
||||
if (png_ptr == NULL)
|
||||
return;
|
||||
|
||||
png_ptr->error_ptr = error_ptr;
|
||||
png_ptr->error_fn = error_fn;
|
||||
png_ptr->warning_fn = warning_fn;
|
||||
}
|
||||
|
||||
|
||||
/* This function returns a pointer to the error_ptr associated with the user
|
||||
* functions. The application should free any memory associated with this
|
||||
* pointer before png_write_destroy and png_read_destroy are called.
|
||||
*/
|
||||
png_voidp PNGAPI
|
||||
png_get_error_ptr(png_const_structp png_ptr)
|
||||
{
|
||||
if (png_ptr == NULL)
|
||||
return NULL;
|
||||
|
||||
return ((png_voidp)png_ptr->error_ptr);
|
||||
}
|
||||
|
||||
|
||||
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
void PNGAPI
|
||||
png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
|
||||
{
|
||||
if (png_ptr != NULL)
|
||||
{
|
||||
png_ptr->flags &=
|
||||
((~(PNG_FLAG_STRIP_ERROR_NUMBERS |
|
||||
PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
|
||||
|
||||
/* pngerror.c - stub functions for i/o and memory allocation
|
||||
*
|
||||
* Last changed in libpng 1.2.45 [July 7, 2011]
|
||||
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
|
||||
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
||||
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
|
||||
*
|
||||
* This code is released under the libpng license.
|
||||
* For conditions of distribution and use, see the disclaimer
|
||||
* and license in png.h
|
||||
*
|
||||
* This file provides a location for all error handling. Users who
|
||||
* need special error handling are expected to write replacement functions
|
||||
* and use png_set_error_fn() to use those functions. See the instructions
|
||||
* at each function.
|
||||
*/
|
||||
|
||||
#define PNG_INTERNAL
|
||||
#define PNG_NO_PEDANTIC_WARNINGS
|
||||
#include "png.h"
|
||||
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
|
||||
|
||||
static void /* PRIVATE */
|
||||
png_default_error PNGARG((png_structp png_ptr,
|
||||
png_const_charp error_message)) PNG_NORETURN;
|
||||
#ifdef PNG_WARNINGS_SUPPORTED
|
||||
static void /* PRIVATE */
|
||||
png_default_warning PNGARG((png_structp png_ptr,
|
||||
png_const_charp warning_message));
|
||||
#endif /* PNG_WARNINGS_SUPPORTED */
|
||||
|
||||
/* This function is called whenever there is a fatal error. This function
|
||||
* should not be changed. If there is a need to handle errors differently,
|
||||
* you should supply a replacement error function and use png_set_error_fn()
|
||||
* to replace the error function at run-time.
|
||||
*/
|
||||
#ifdef PNG_ERROR_TEXT_SUPPORTED
|
||||
void PNGAPI
|
||||
png_error(png_structp png_ptr, png_const_charp error_message)
|
||||
{
|
||||
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
char msg[16];
|
||||
if (png_ptr != NULL)
|
||||
{
|
||||
if (png_ptr->flags&
|
||||
(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
|
||||
{
|
||||
if (*error_message == PNG_LITERAL_SHARP)
|
||||
{
|
||||
/* Strip "#nnnn " from beginning of error message. */
|
||||
int offset;
|
||||
for (offset = 1; offset<15; offset++)
|
||||
if (error_message[offset] == ' ')
|
||||
break;
|
||||
if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < offset - 1; i++)
|
||||
msg[i] = error_message[i + 1];
|
||||
msg[i - 1] = '\0';
|
||||
error_message = msg;
|
||||
}
|
||||
else
|
||||
error_message += offset;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
|
||||
{
|
||||
msg[0] = '0';
|
||||
msg[1] = '\0';
|
||||
error_message = msg;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (png_ptr != NULL && png_ptr->error_fn != NULL)
|
||||
(*(png_ptr->error_fn))(png_ptr, error_message);
|
||||
|
||||
/* If the custom handler doesn't exist, or if it returns,
|
||||
use the default handler, which will not return. */
|
||||
png_default_error(png_ptr, error_message);
|
||||
}
|
||||
#else
|
||||
void PNGAPI
|
||||
png_err(png_structp png_ptr)
|
||||
{
|
||||
/* Prior to 1.2.45 the error_fn received a NULL pointer, expressed
|
||||
* erroneously as '\0', instead of the empty string "". This was
|
||||
* apparently an error, introduced in libpng-1.2.20, and png_default_error
|
||||
* will crash in this case.
|
||||
*/
|
||||
if (png_ptr != NULL && png_ptr->error_fn != NULL)
|
||||
(*(png_ptr->error_fn))(png_ptr, "");
|
||||
|
||||
/* If the custom handler doesn't exist, or if it returns,
|
||||
use the default handler, which will not return. */
|
||||
png_default_error(png_ptr, "");
|
||||
}
|
||||
#endif /* PNG_ERROR_TEXT_SUPPORTED */
|
||||
|
||||
#ifdef PNG_WARNINGS_SUPPORTED
|
||||
/* This function is called whenever there is a non-fatal error. This function
|
||||
* should not be changed. If there is a need to handle warnings differently,
|
||||
* you should supply a replacement warning function and use
|
||||
* png_set_error_fn() to replace the warning function at run-time.
|
||||
*/
|
||||
void PNGAPI
|
||||
png_warning(png_structp png_ptr, png_const_charp warning_message)
|
||||
{
|
||||
int offset = 0;
|
||||
if (png_ptr != NULL)
|
||||
{
|
||||
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
if (png_ptr->flags&
|
||||
(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
|
||||
#endif
|
||||
{
|
||||
if (*warning_message == PNG_LITERAL_SHARP)
|
||||
{
|
||||
for (offset = 1; offset < 15; offset++)
|
||||
if (warning_message[offset] == ' ')
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (png_ptr != NULL && png_ptr->warning_fn != NULL)
|
||||
(*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
|
||||
else
|
||||
png_default_warning(png_ptr, warning_message + offset);
|
||||
}
|
||||
#endif /* PNG_WARNINGS_SUPPORTED */
|
||||
|
||||
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
|
||||
void PNGAPI
|
||||
png_benign_error(png_structp png_ptr, png_const_charp error_message)
|
||||
{
|
||||
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
|
||||
png_warning(png_ptr, error_message);
|
||||
else
|
||||
png_error(png_ptr, error_message);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* These utilities are used internally to build an error message that relates
|
||||
* to the current chunk. The chunk name comes from png_ptr->chunk_name,
|
||||
* this is used to prefix the message. The message is limited in length
|
||||
* to 63 bytes, the name characters are output as hex digits wrapped in []
|
||||
* if the character is invalid.
|
||||
*/
|
||||
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
|
||||
static PNG_CONST char png_digit[16] = {
|
||||
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
|
||||
'A', 'B', 'C', 'D', 'E', 'F'
|
||||
};
|
||||
|
||||
#define PNG_MAX_ERROR_TEXT 64
|
||||
#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
|
||||
static void /* PRIVATE */
|
||||
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
|
||||
error_message)
|
||||
{
|
||||
int iout = 0, iin = 0;
|
||||
|
||||
while (iin < 4)
|
||||
{
|
||||
int c = png_ptr->chunk_name[iin++];
|
||||
if (isnonalpha(c))
|
||||
{
|
||||
buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
|
||||
buffer[iout++] = png_digit[(c & 0xf0) >> 4];
|
||||
buffer[iout++] = png_digit[c & 0x0f];
|
||||
buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer[iout++] = (png_byte)c;
|
||||
}
|
||||
}
|
||||
|
||||
if (error_message == NULL)
|
||||
buffer[iout] = '\0';
|
||||
else
|
||||
{
|
||||
buffer[iout++] = ':';
|
||||
buffer[iout++] = ' ';
|
||||
|
||||
iin = 0;
|
||||
while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0')
|
||||
buffer[iout++] = error_message[iin++];
|
||||
|
||||
/* iin < PNG_MAX_ERROR_TEXT, so the following is safe: */
|
||||
buffer[iout] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef PNG_READ_SUPPORTED
|
||||
void PNGAPI
|
||||
png_chunk_error(png_structp png_ptr, png_const_charp error_message)
|
||||
{
|
||||
char msg[18+PNG_MAX_ERROR_TEXT];
|
||||
if (png_ptr == NULL)
|
||||
png_error(png_ptr, error_message);
|
||||
else
|
||||
{
|
||||
png_format_buffer(png_ptr, msg, error_message);
|
||||
png_error(png_ptr, msg);
|
||||
}
|
||||
}
|
||||
#endif /* PNG_READ_SUPPORTED */
|
||||
#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
|
||||
|
||||
#ifdef PNG_WARNINGS_SUPPORTED
|
||||
void PNGAPI
|
||||
png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
|
||||
{
|
||||
char msg[18+PNG_MAX_ERROR_TEXT];
|
||||
if (png_ptr == NULL)
|
||||
png_warning(png_ptr, warning_message);
|
||||
else
|
||||
{
|
||||
png_format_buffer(png_ptr, msg, warning_message);
|
||||
png_warning(png_ptr, msg);
|
||||
}
|
||||
}
|
||||
#endif /* PNG_WARNINGS_SUPPORTED */
|
||||
|
||||
#ifdef PNG_READ_SUPPORTED
|
||||
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
|
||||
void PNGAPI
|
||||
png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
|
||||
{
|
||||
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
|
||||
png_chunk_warning(png_ptr, error_message);
|
||||
else
|
||||
png_chunk_error(png_ptr, error_message);
|
||||
}
|
||||
#endif
|
||||
#endif /* PNG_READ_SUPPORTED */
|
||||
|
||||
/* This is the default error handling function. Note that replacements for
|
||||
* this function MUST NOT RETURN, or the program will likely crash. This
|
||||
* function is used by default, or if the program supplies NULL for the
|
||||
* error function pointer in png_set_error_fn().
|
||||
*/
|
||||
static void /* PRIVATE */
|
||||
png_default_error(png_structp png_ptr, png_const_charp error_message)
|
||||
{
|
||||
#ifdef PNG_CONSOLE_IO_SUPPORTED
|
||||
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
if (*error_message == PNG_LITERAL_SHARP)
|
||||
{
|
||||
/* Strip "#nnnn " from beginning of error message. */
|
||||
int offset;
|
||||
char error_number[16];
|
||||
for (offset = 0; offset<15; offset++)
|
||||
{
|
||||
error_number[offset] = error_message[offset + 1];
|
||||
if (error_message[offset] == ' ')
|
||||
break;
|
||||
}
|
||||
if ((offset > 1) && (offset < 15))
|
||||
{
|
||||
error_number[offset - 1] = '\0';
|
||||
fprintf(stderr, "libpng error no. %s: %s",
|
||||
error_number, error_message + offset + 1);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
else
|
||||
{
|
||||
fprintf(stderr, "libpng error: %s, offset=%d",
|
||||
error_message, offset);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
fprintf(stderr, "libpng error: %s", error_message);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PNG_SETJMP_SUPPORTED
|
||||
if (png_ptr)
|
||||
{
|
||||
# ifdef USE_FAR_KEYWORD
|
||||
{
|
||||
jmp_buf jmpbuf;
|
||||
png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
|
||||
longjmp(jmpbuf,1);
|
||||
}
|
||||
# else
|
||||
longjmp(png_ptr->jmpbuf, 1);
|
||||
# endif
|
||||
}
|
||||
#endif
|
||||
/* Here if not setjmp support or if png_ptr is null. */
|
||||
PNG_ABORT();
|
||||
#ifndef PNG_CONSOLE_IO_SUPPORTED
|
||||
error_message = error_message; /* Make compiler happy */
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifdef PNG_WARNINGS_SUPPORTED
|
||||
/* This function is called when there is a warning, but the library thinks
|
||||
* it can continue anyway. Replacement functions don't have to do anything
|
||||
* here if you don't want them to. In the default configuration, png_ptr is
|
||||
* not used, but it is passed in case it may be useful.
|
||||
*/
|
||||
static void /* PRIVATE */
|
||||
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
|
||||
{
|
||||
#ifdef PNG_CONSOLE_IO_SUPPORTED
|
||||
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
if (*warning_message == PNG_LITERAL_SHARP)
|
||||
{
|
||||
int offset;
|
||||
char warning_number[16];
|
||||
for (offset = 0; offset < 15; offset++)
|
||||
{
|
||||
warning_number[offset] = warning_message[offset + 1];
|
||||
if (warning_message[offset] == ' ')
|
||||
break;
|
||||
}
|
||||
if ((offset > 1) && (offset < 15))
|
||||
{
|
||||
warning_number[offset + 1] = '\0';
|
||||
fprintf(stderr, "libpng warning no. %s: %s",
|
||||
warning_number, warning_message + offset);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
else
|
||||
{
|
||||
fprintf(stderr, "libpng warning: %s",
|
||||
warning_message);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
}
|
||||
else
|
||||
# endif
|
||||
{
|
||||
fprintf(stderr, "libpng warning: %s", warning_message);
|
||||
fprintf(stderr, PNG_STRING_NEWLINE);
|
||||
}
|
||||
#else
|
||||
warning_message = warning_message; /* Make compiler happy */
|
||||
#endif
|
||||
png_ptr = png_ptr; /* Make compiler happy */
|
||||
}
|
||||
#endif /* PNG_WARNINGS_SUPPORTED */
|
||||
|
||||
/* This function is called when the application wants to use another method
|
||||
* of handling errors and warnings. Note that the error function MUST NOT
|
||||
* return to the calling routine or serious problems will occur. The return
|
||||
* method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
|
||||
*/
|
||||
void PNGAPI
|
||||
png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
|
||||
png_error_ptr error_fn, png_error_ptr warning_fn)
|
||||
{
|
||||
if (png_ptr == NULL)
|
||||
return;
|
||||
png_ptr->error_ptr = error_ptr;
|
||||
png_ptr->error_fn = error_fn;
|
||||
png_ptr->warning_fn = warning_fn;
|
||||
}
|
||||
|
||||
|
||||
/* This function returns a pointer to the error_ptr associated with the user
|
||||
* functions. The application should free any memory associated with this
|
||||
* pointer before png_write_destroy and png_read_destroy are called.
|
||||
*/
|
||||
png_voidp PNGAPI
|
||||
png_get_error_ptr(png_structp png_ptr)
|
||||
{
|
||||
if (png_ptr == NULL)
|
||||
return NULL;
|
||||
return ((png_voidp)png_ptr->error_ptr);
|
||||
}
|
||||
|
||||
|
||||
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
||||
void PNGAPI
|
||||
png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
|
||||
{
|
||||
if (png_ptr != NULL)
|
||||
{
|
||||
png_ptr->flags &=
|
||||
((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
|
||||
|
||||
Reference in New Issue
Block a user