1995-12-19 09:22:19 +00:00
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/* pngerror.c - stub functions for i/o and memory allocation
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1998-01-01 13:13:13 +00:00
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*
|
2014-02-06 03:52:51 +00:00
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* Last changed in libpng 1.2.51 [February 6, 2014]
|
2014-02-03 16:51:06 +00:00
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* Copyright (c) 1998-2014 Glenn Randers-Pehrson
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2000-06-04 19:29:29 +00:00
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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.)
|
1998-01-01 13:13:13 +00:00
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*
|
2009-06-29 01:26:26 +00:00
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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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*
|
1998-05-21 14:27:50 +00:00
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* This file provides a location for all error handling. Users who
|
1998-01-01 13:13:13 +00:00
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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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1995-12-19 09:22:19 +00:00
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#define PNG_INTERNAL
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2009-11-25 22:04:13 +00:00
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#define PNG_NO_PEDANTIC_WARNINGS
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1995-12-19 09:22:19 +00:00
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#include "png.h"
|
2006-02-21 04:09:05 +00:00
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#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
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2008-07-06 11:05:04 +00:00
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2000-05-06 19:09:57 +00:00
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static void /* PRIVATE */
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png_default_error PNGARG((png_structp png_ptr,
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2009-11-09 01:18:45 +00:00
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png_const_charp error_message)) PNG_NORETURN;
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2009-10-18 19:30:53 +00:00
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#ifdef PNG_WARNINGS_SUPPORTED
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2000-05-06 19:09:57 +00:00
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static void /* PRIVATE */
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png_default_warning PNGARG((png_structp png_ptr,
|
2002-05-11 01:19:58 +00:00
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png_const_charp warning_message));
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2009-10-18 00:18:43 +00:00
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#endif /* PNG_WARNINGS_SUPPORTED */
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1996-06-05 20:50:50 +00:00
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1996-01-10 08:56:49 +00:00
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/* This function is called whenever there is a fatal error. This function
|
1998-01-01 13:13:13 +00:00
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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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2009-10-18 19:30:53 +00:00
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#ifdef PNG_ERROR_TEXT_SUPPORTED
|
2000-05-06 19:09:57 +00:00
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void PNGAPI
|
2002-05-11 01:19:58 +00:00
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png_error(png_structp png_ptr, png_const_charp error_message)
|
1995-12-19 09:22:19 +00:00
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{
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2001-05-14 14:20:53 +00:00
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#ifdef PNG_ERROR_NUMBERS_SUPPORTED
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char msg[16];
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2006-03-10 16:19:04 +00:00
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if (png_ptr != NULL)
|
2001-05-14 14:20:53 +00:00
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{
|
2006-03-10 16:19:04 +00:00
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if (png_ptr->flags&
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(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
|
2001-05-14 14:20:53 +00:00
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{
|
2009-10-30 04:47:05 +00:00
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if (*error_message == PNG_LITERAL_SHARP)
|
2006-03-10 16:19:04 +00:00
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{
|
2009-03-21 13:10:28 +00:00
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/* Strip "#nnnn " from beginning of error message. */
|
2006-03-10 16:19:04 +00:00
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int offset;
|
2008-07-10 14:10:58 +00:00
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for (offset = 1; offset<15; offset++)
|
2008-07-25 13:38:43 +00:00
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if (error_message[offset] == ' ')
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2006-03-10 16:19:04 +00:00
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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;
|
2008-07-25 13:38:43 +00:00
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for (i = 0; i < offset - 1; i++)
|
2008-07-22 18:51:08 +00:00
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msg[i] = error_message[i + 1];
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2008-07-30 00:08:32 +00:00
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msg[i - 1] = '\0';
|
2008-07-10 14:10:58 +00:00
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error_message = msg;
|
2006-03-10 16:19:04 +00:00
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}
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else
|
2008-07-10 14:10:58 +00:00
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error_message += offset;
|
2006-03-10 16:19:04 +00:00
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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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{
|
2008-07-22 18:51:08 +00:00
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msg[0] = '0';
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msg[1] = '\0';
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error_message = msg;
|
2006-03-10 16:19:04 +00:00
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}
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}
|
2001-05-14 14:20:53 +00:00
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}
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}
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#endif
|
2004-07-18 03:45:44 +00:00
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if (png_ptr != NULL && png_ptr->error_fn != NULL)
|
2002-05-11 01:19:58 +00:00
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(*(png_ptr->error_fn))(png_ptr, error_message);
|
1995-12-19 09:22:19 +00:00
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2004-07-18 03:45:44 +00:00
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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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2002-05-11 01:19:58 +00:00
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png_default_error(png_ptr, error_message);
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1995-12-19 09:22:19 +00:00
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}
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2007-08-20 03:50:31 +00:00
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#else
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void PNGAPI
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png_err(png_structp png_ptr)
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{
|
2011-06-07 20:17:35 +00:00
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/* Prior to 1.2.45 the error_fn received a NULL pointer, expressed
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* erroneously as '\0', instead of the empty string "". This was
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* apparently an error, introduced in libpng-1.2.20, and png_default_error
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* will crash in this case.
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*/
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2007-08-20 03:50:31 +00:00
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if (png_ptr != NULL && png_ptr->error_fn != NULL)
|
2011-06-07 20:17:35 +00:00
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(*(png_ptr->error_fn))(png_ptr, "");
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2007-08-20 03:50:31 +00:00
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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. */
|
2011-06-07 20:17:35 +00:00
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png_default_error(png_ptr, "");
|
2007-08-20 03:50:31 +00:00
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}
|
2009-10-18 00:18:43 +00:00
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#endif /* PNG_ERROR_TEXT_SUPPORTED */
|
1995-12-19 09:22:19 +00:00
|
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|
2009-10-18 19:30:53 +00:00
|
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|
#ifdef PNG_WARNINGS_SUPPORTED
|
1996-01-10 08:56:49 +00:00
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|
|
/* This function is called whenever there is a non-fatal error. This function
|
1998-01-01 13:13:13 +00:00
|
|
|
* should not be changed. If there is a need to handle warnings differently,
|
|
|
|
* 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.
|
|
|
|
*/
|
2000-05-06 19:09:57 +00:00
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void PNGAPI
|
2002-05-11 01:19:58 +00:00
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png_warning(png_structp png_ptr, png_const_charp warning_message)
|
1995-12-19 09:22:19 +00:00
|
|
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{
|
2004-07-18 03:45:44 +00:00
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int offset = 0;
|
2006-03-10 16:19:04 +00:00
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if (png_ptr != NULL)
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{
|
2001-05-14 14:20:53 +00:00
|
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#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
2006-03-10 16:19:04 +00:00
|
|
|
if (png_ptr->flags&
|
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(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
|
2001-05-14 14:20:53 +00:00
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#endif
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{
|
2009-10-30 04:47:05 +00:00
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if (*warning_message == PNG_LITERAL_SHARP)
|
2006-03-10 16:19:04 +00:00
|
|
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{
|
2008-07-25 13:38:43 +00:00
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for (offset = 1; offset < 15; offset++)
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if (warning_message[offset] == ' ')
|
2006-03-10 16:19:04 +00:00
|
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break;
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}
|
2001-05-14 14:20:53 +00:00
|
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|
}
|
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}
|
2008-11-27 12:44:23 +00:00
|
|
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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);
|
1996-01-26 07:38:47 +00:00
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else
|
2008-07-10 14:10:58 +00:00
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png_default_warning(png_ptr, warning_message + offset);
|
1995-12-19 09:22:19 +00:00
|
|
|
}
|
2009-10-18 00:18:43 +00:00
|
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|
#endif /* PNG_WARNINGS_SUPPORTED */
|
1995-12-19 09:22:19 +00:00
|
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|
|
2009-10-30 04:47:05 +00:00
|
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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)
|
|
|
|
{
|
|
|
|
if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
|
|
|
|
png_warning(png_ptr, error_message);
|
|
|
|
else
|
|
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|
png_error(png_ptr, error_message);
|
|
|
|
}
|
|
|
|
#endif
|
2007-05-28 13:45:13 +00:00
|
|
|
|
2002-05-21 23:06:08 +00:00
|
|
|
/* These utilities are used internally to build an error message that relates
|
1998-01-04 04:40:55 +00:00
|
|
|
* 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.
|
|
|
|
*/
|
2004-07-18 03:45:44 +00:00
|
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|
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
|
2007-05-18 18:40:59 +00:00
|
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|
static PNG_CONST char png_digit[16] = {
|
2004-07-18 03:45:44 +00:00
|
|
|
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
|
|
|
|
'A', 'B', 'C', 'D', 'E', 'F'
|
|
|
|
};
|
1998-01-04 04:40:55 +00:00
|
|
|
|
2007-10-16 19:27:46 +00:00
|
|
|
#define PNG_MAX_ERROR_TEXT 64
|
2009-10-18 19:30:53 +00:00
|
|
|
#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
|
2000-05-06 19:09:57 +00:00
|
|
|
static void /* PRIVATE */
|
2001-04-20 15:32:10 +00:00
|
|
|
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
|
2002-05-11 01:19:58 +00:00
|
|
|
error_message)
|
1998-01-04 04:40:55 +00:00
|
|
|
{
|
|
|
|
int iout = 0, iin = 0;
|
|
|
|
|
2000-02-05 05:40:16 +00:00
|
|
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while (iin < 4)
|
|
|
|
{
|
1998-01-04 04:40:55 +00:00
|
|
|
int c = png_ptr->chunk_name[iin++];
|
2000-02-05 05:40:16 +00:00
|
|
|
if (isnonalpha(c))
|
|
|
|
{
|
2009-10-30 04:47:05 +00:00
|
|
|
buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
|
1998-01-04 04:40:55 +00:00
|
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|
buffer[iout++] = png_digit[(c & 0xf0) >> 4];
|
2000-02-05 05:40:16 +00:00
|
|
|
buffer[iout++] = png_digit[c & 0x0f];
|
2009-10-30 04:47:05 +00:00
|
|
|
buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
|
2000-02-05 05:40:16 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
1999-10-14 12:43:10 +00:00
|
|
|
buffer[iout++] = (png_byte)c;
|
1998-01-04 04:40:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2002-05-11 01:19:58 +00:00
|
|
|
if (error_message == NULL)
|
2007-10-07 11:03:41 +00:00
|
|
|
buffer[iout] = '\0';
|
2000-02-05 05:40:16 +00:00
|
|
|
else
|
|
|
|
{
|
1998-01-04 04:40:55 +00:00
|
|
|
buffer[iout++] = ':';
|
|
|
|
buffer[iout++] = ' ';
|
2011-06-07 20:17:35 +00:00
|
|
|
|
|
|
|
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';
|
1998-01-04 04:40:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-07-14 19:43:24 +00:00
|
|
|
#ifdef PNG_READ_SUPPORTED
|
2000-05-06 19:09:57 +00:00
|
|
|
void PNGAPI
|
2002-05-11 01:19:58 +00:00
|
|
|
png_chunk_error(png_structp png_ptr, png_const_charp error_message)
|
1998-01-04 04:40:55 +00:00
|
|
|
{
|
2007-10-16 19:27:46 +00:00
|
|
|
char msg[18+PNG_MAX_ERROR_TEXT];
|
2006-03-10 16:19:04 +00:00
|
|
|
if (png_ptr == NULL)
|
|
|
|
png_error(png_ptr, error_message);
|
2006-11-08 02:09:46 +00:00
|
|
|
else
|
|
|
|
{
|
|
|
|
png_format_buffer(png_ptr, msg, error_message);
|
|
|
|
png_error(png_ptr, msg);
|
|
|
|
}
|
1998-01-04 04:40:55 +00:00
|
|
|
}
|
2007-08-20 03:50:31 +00:00
|
|
|
#endif /* PNG_READ_SUPPORTED */
|
2009-10-18 00:18:43 +00:00
|
|
|
#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
|
1998-01-04 04:40:55 +00:00
|
|
|
|
2009-10-18 19:30:53 +00:00
|
|
|
#ifdef PNG_WARNINGS_SUPPORTED
|
2000-05-06 19:09:57 +00:00
|
|
|
void PNGAPI
|
2002-05-11 01:19:58 +00:00
|
|
|
png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
|
1998-01-04 04:40:55 +00:00
|
|
|
{
|
2007-10-16 19:27:46 +00:00
|
|
|
char msg[18+PNG_MAX_ERROR_TEXT];
|
2006-03-10 16:19:04 +00:00
|
|
|
if (png_ptr == NULL)
|
|
|
|
png_warning(png_ptr, warning_message);
|
2006-11-08 02:09:46 +00:00
|
|
|
else
|
|
|
|
{
|
|
|
|
png_format_buffer(png_ptr, msg, warning_message);
|
|
|
|
png_warning(png_ptr, msg);
|
|
|
|
}
|
1998-01-04 04:40:55 +00:00
|
|
|
}
|
2009-10-18 00:18:43 +00:00
|
|
|
#endif /* PNG_WARNINGS_SUPPORTED */
|
1998-01-04 04:40:55 +00:00
|
|
|
|
2009-10-30 04:47:05 +00:00
|
|
|
#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 */
|
2007-05-28 13:45:13 +00:00
|
|
|
|
1996-01-16 07:51:56 +00:00
|
|
|
/* This is the default error handling function. Note that replacements for
|
1998-01-01 13:13:13 +00:00
|
|
|
* 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().
|
|
|
|
*/
|
2000-05-06 19:09:57 +00:00
|
|
|
static void /* PRIVATE */
|
2002-05-11 01:19:58 +00:00
|
|
|
png_default_error(png_structp png_ptr, png_const_charp error_message)
|
1995-12-19 09:22:19 +00:00
|
|
|
{
|
2009-10-18 19:30:53 +00:00
|
|
|
#ifdef PNG_CONSOLE_IO_SUPPORTED
|
2001-05-14 14:20:53 +00:00
|
|
|
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
2009-10-30 04:47:05 +00:00
|
|
|
if (*error_message == PNG_LITERAL_SHARP)
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
2009-03-21 13:10:28 +00:00
|
|
|
/* Strip "#nnnn " from beginning of error message. */
|
2001-05-14 14:20:53 +00:00
|
|
|
int offset;
|
|
|
|
char error_number[16];
|
2008-07-22 18:51:08 +00:00
|
|
|
for (offset = 0; offset<15; offset++)
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
2008-07-25 13:38:43 +00:00
|
|
|
error_number[offset] = error_message[offset + 1];
|
|
|
|
if (error_message[offset] == ' ')
|
2001-05-14 14:20:53 +00:00
|
|
|
break;
|
|
|
|
}
|
2008-07-10 14:10:58 +00:00
|
|
|
if ((offset > 1) && (offset < 15))
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
2008-07-30 00:08:32 +00:00
|
|
|
error_number[offset - 1] = '\0';
|
2009-03-21 13:10:28 +00:00
|
|
|
fprintf(stderr, "libpng error no. %s: %s",
|
|
|
|
error_number, error_message + offset + 1);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
2001-05-14 14:20:53 +00:00
|
|
|
}
|
|
|
|
else
|
2009-05-20 17:43:52 +00:00
|
|
|
{
|
2009-03-21 13:10:28 +00:00
|
|
|
fprintf(stderr, "libpng error: %s, offset=%d",
|
|
|
|
error_message, offset);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
2009-05-20 17:43:52 +00:00
|
|
|
}
|
2001-05-14 14:20:53 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
2009-03-21 13:10:28 +00:00
|
|
|
{
|
|
|
|
fprintf(stderr, "libpng error: %s", error_message);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
|
|
|
}
|
1995-12-19 09:22:19 +00:00
|
|
|
#endif
|
|
|
|
|
2000-02-05 05:40:16 +00:00
|
|
|
#ifdef PNG_SETJMP_SUPPORTED
|
2006-11-13 20:14:21 +00:00
|
|
|
if (png_ptr)
|
|
|
|
{
|
2000-02-05 05:40:16 +00:00
|
|
|
# ifdef USE_FAR_KEYWORD
|
1996-01-26 07:38:47 +00:00
|
|
|
{
|
|
|
|
jmp_buf jmpbuf;
|
2007-05-28 13:45:13 +00:00
|
|
|
png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
|
2010-01-01 16:48:33 +00:00
|
|
|
longjmp(jmpbuf,1);
|
1996-01-26 07:38:47 +00:00
|
|
|
}
|
2000-02-05 05:40:16 +00:00
|
|
|
# else
|
1996-01-26 07:38:47 +00:00
|
|
|
longjmp(png_ptr->jmpbuf, 1);
|
2006-11-13 20:14:21 +00:00
|
|
|
# endif
|
|
|
|
}
|
1995-12-19 09:22:19 +00:00
|
|
|
#endif
|
2009-11-08 22:51:11 +00:00
|
|
|
/* Here if not setjmp support or if png_ptr is null. */
|
|
|
|
PNG_ABORT();
|
2009-10-18 19:30:53 +00:00
|
|
|
#ifndef PNG_CONSOLE_IO_SUPPORTED
|
2014-02-03 15:41:50 +00:00
|
|
|
PNG_UNUSED(error_message) /* Make compiler happy */
|
2004-08-04 11:34:52 +00:00
|
|
|
#endif
|
1995-12-19 09:22:19 +00:00
|
|
|
}
|
|
|
|
|
2009-10-18 19:30:53 +00:00
|
|
|
#ifdef PNG_WARNINGS_SUPPORTED
|
1996-01-10 08:56:49 +00:00
|
|
|
/* This function is called when there is a warning, but the library thinks
|
1998-01-01 13:13:13 +00:00
|
|
|
* it can continue anyway. Replacement functions don't have to do anything
|
1998-06-14 19:43:31 +00:00
|
|
|
* here if you don't want them to. In the default configuration, png_ptr is
|
1998-01-01 13:13:13 +00:00
|
|
|
* not used, but it is passed in case it may be useful.
|
|
|
|
*/
|
2000-05-06 19:09:57 +00:00
|
|
|
static void /* PRIVATE */
|
2002-05-11 01:19:58 +00:00
|
|
|
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
|
1995-12-19 09:22:19 +00:00
|
|
|
{
|
2009-10-18 19:30:53 +00:00
|
|
|
#ifdef PNG_CONSOLE_IO_SUPPORTED
|
2001-05-14 14:20:53 +00:00
|
|
|
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
2009-10-30 04:47:05 +00:00
|
|
|
if (*warning_message == PNG_LITERAL_SHARP)
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
|
|
|
int offset;
|
|
|
|
char warning_number[16];
|
2008-07-22 18:51:08 +00:00
|
|
|
for (offset = 0; offset < 15; offset++)
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
2008-07-25 13:38:43 +00:00
|
|
|
warning_number[offset] = warning_message[offset + 1];
|
|
|
|
if (warning_message[offset] == ' ')
|
2001-05-14 14:20:53 +00:00
|
|
|
break;
|
|
|
|
}
|
2008-07-10 14:10:58 +00:00
|
|
|
if ((offset > 1) && (offset < 15))
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
2008-07-22 18:51:08 +00:00
|
|
|
warning_number[offset + 1] = '\0';
|
2009-03-21 13:10:28 +00:00
|
|
|
fprintf(stderr, "libpng warning no. %s: %s",
|
|
|
|
warning_number, warning_message + offset);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
2001-05-14 14:20:53 +00:00
|
|
|
}
|
|
|
|
else
|
2009-03-21 13:10:28 +00:00
|
|
|
{
|
|
|
|
fprintf(stderr, "libpng warning: %s",
|
|
|
|
warning_message);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
|
|
|
}
|
2001-05-14 14:20:53 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
# endif
|
2009-03-21 13:10:28 +00:00
|
|
|
{
|
|
|
|
fprintf(stderr, "libpng warning: %s", warning_message);
|
|
|
|
fprintf(stderr, PNG_STRING_NEWLINE);
|
|
|
|
}
|
2000-05-29 13:58:03 +00:00
|
|
|
#else
|
2014-02-03 15:41:50 +00:00
|
|
|
PNG_UNUSED(warning_message) /* Make compiler happy */
|
1995-12-19 09:22:19 +00:00
|
|
|
#endif
|
2014-02-03 15:41:50 +00:00
|
|
|
PNG_UNUSED(png_ptr) /* Make compiler happy */
|
1995-12-19 09:22:19 +00:00
|
|
|
}
|
2009-10-18 00:18:43 +00:00
|
|
|
#endif /* PNG_WARNINGS_SUPPORTED */
|
1995-12-19 09:22:19 +00:00
|
|
|
|
1996-01-10 08:56:49 +00:00
|
|
|
/* This function is called when the application wants to use another method
|
1998-01-01 13:13:13 +00:00
|
|
|
* 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)
|
|
|
|
*/
|
2000-05-06 19:09:57 +00:00
|
|
|
void PNGAPI
|
1996-06-05 20:50:50 +00:00
|
|
|
png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
|
|
|
|
png_error_ptr error_fn, png_error_ptr warning_fn)
|
1995-12-19 09:22:19 +00:00
|
|
|
{
|
2006-03-10 16:19:04 +00:00
|
|
|
if (png_ptr == NULL)
|
|
|
|
return;
|
1996-06-05 20:50:50 +00:00
|
|
|
png_ptr->error_ptr = error_ptr;
|
1996-01-26 07:38:47 +00:00
|
|
|
png_ptr->error_fn = error_fn;
|
|
|
|
png_ptr->warning_fn = warning_fn;
|
1995-12-19 09:22:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
1996-06-05 20:50:50 +00:00
|
|
|
/* This function returns a pointer to the error_ptr associated with the user
|
1998-01-01 13:13:13 +00:00
|
|
|
* functions. The application should free any memory associated with this
|
|
|
|
* pointer before png_write_destroy and png_read_destroy are called.
|
|
|
|
*/
|
2000-05-06 19:09:57 +00:00
|
|
|
png_voidp PNGAPI
|
1996-06-05 20:50:50 +00:00
|
|
|
png_get_error_ptr(png_structp png_ptr)
|
1995-12-19 09:22:19 +00:00
|
|
|
{
|
2006-03-10 16:19:04 +00:00
|
|
|
if (png_ptr == NULL)
|
|
|
|
return NULL;
|
1998-02-01 02:07:59 +00:00
|
|
|
return ((png_voidp)png_ptr->error_ptr);
|
1995-12-19 09:22:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2001-05-14 14:20:53 +00:00
|
|
|
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
|
2002-03-26 00:49:08 +00:00
|
|
|
void PNGAPI
|
2001-05-14 14:20:53 +00:00
|
|
|
png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
|
|
|
|
{
|
2008-07-10 14:10:58 +00:00
|
|
|
if (png_ptr != NULL)
|
2001-05-14 14:20:53 +00:00
|
|
|
{
|
|
|
|
png_ptr->flags &=
|
|
|
|
((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
2006-02-21 04:09:05 +00:00
|
|
|
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
|