/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.2.34 [December 18, 2008]
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 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)
+#include "pngpriv.h"
static void /* PRIVATE */
png_default_error PNGARG((png_structp png_ptr,
- png_const_charp error_message));
-#ifndef PNG_NO_WARNINGS
+ 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_NO_WARNINGS */
+#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.
*/
-#ifndef PNG_NO_ERROR_TEXT
+#ifdef PNG_ERROR_TEXT_SUPPORTED
void PNGAPI
png_error(png_structp png_ptr, png_const_charp error_message)
{
if (png_ptr->flags&
(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
{
- if (*error_message == '#')
+ if (*error_message == PNG_LITERAL_SHARP)
{
- /* Strip "#nnnn " from beginning of error message. */
+ /* Strip "#nnnn " from beginning of error message. */
int offset;
for (offset = 1; offset<15; offset++)
if (error_message[offset] == ' ')
use the default handler, which will not return. */
png_default_error(png_ptr, '\0');
}
-#endif /* PNG_NO_ERROR_TEXT */
+#endif /* PNG_ERROR_TEXT_SUPPORTED */
-#ifndef PNG_NO_WARNINGS
+#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_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
#endif
{
- if (*warning_message == '#')
+ if (*warning_message == PNG_LITERAL_SHARP)
{
for (offset = 1; offset < 15; offset++)
if (warning_message[offset] == ' ')
else
png_default_warning(png_ptr, warning_message + offset);
}
-#endif /* PNG_NO_WARNINGS */
+#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,
};
#define PNG_MAX_ERROR_TEXT 64
-
-#if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
+#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 c = png_ptr->chunk_name[iin++];
if (isnonalpha(c))
{
- buffer[iout++] = '[';
+ buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
buffer[iout++] = png_digit[(c & 0xf0) >> 4];
buffer[iout++] = png_digit[c & 0x0f];
- buffer[iout++] = ']';
+ buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
}
else
{
}
}
#endif /* PNG_READ_SUPPORTED */
-#endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */
+#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
-#ifndef PNG_NO_WARNINGS
+#ifdef PNG_WARNINGS_SUPPORTED
void PNGAPI
png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
{
png_warning(png_ptr, msg);
}
}
-#endif /* PNG_NO_WARNINGS */
+#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 */
+
+#ifdef PNG_SETJMP_SUPPORTED
+/* This API only exists if ANSI-C style error handling is used,
+ * otherwise it is necessary for png_default_error to be overridden.
+ */
+jmp_buf* PNGAPI
+png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
+ size_t jmp_buf_size)
+{
+ if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
+ return NULL;
+
+ png_ptr->longjmp_fn = longjmp_fn;
+ return &png_ptr->jmpbuf;
+}
+#endif
/* This is the default error handling function. Note that replacements for
* this function MUST NOT RETURN, or the program will likely crash. This
static void /* PRIVATE */
png_default_error(png_structp png_ptr, png_const_charp error_message)
{
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (*error_message == '#')
+ if (*error_message == PNG_LITERAL_SHARP)
{
- /* Strip "#nnnn " from beginning of warning message. */
+ /* Strip "#nnnn " from beginning of error message. */
int offset;
char error_number[16];
for (offset = 0; offset<15; offset++)
if ((offset > 1) && (offset < 15))
{
error_number[offset - 1] = '\0';
- fprintf(stderr, "libpng error no. %s: %s\n", error_number,
- error_message + offset + 1);
+ 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\n", error_message, offset);
+ {
+ fprintf(stderr, "libpng error: %s, offset=%d",
+ error_message, offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
}
else
#endif
- fprintf(stderr, "libpng error: %s\n", error_message);
+ {
+ fprintf(stderr, "libpng error: %s", error_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
#endif
#ifdef PNG_SETJMP_SUPPORTED
- if (png_ptr)
+ if (png_ptr && png_ptr->longjmp_fn)
{
# ifdef USE_FAR_KEYWORD
{
jmp_buf jmpbuf;
png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
- longjmp(jmpbuf, 1);
+ png_ptr->longjmp_fn(jmpbuf, 1);
}
# else
- longjmp(png_ptr->jmpbuf, 1);
+ png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
# endif
}
-#else
- PNG_ABORT();
#endif
-#ifdef PNG_NO_CONSOLE_IO
- error_message = error_message; /* make compiler happy */
+ /* 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
}
-#ifndef PNG_NO_WARNINGS
+#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
static void /* PRIVATE */
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
{
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
# ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (*warning_message == '#')
+ if (*warning_message == PNG_LITERAL_SHARP)
{
int offset;
char warning_number[16];
if ((offset > 1) && (offset < 15))
{
warning_number[offset + 1] = '\0';
- fprintf(stderr, "libpng warning no. %s: %s\n", warning_number,
- warning_message + offset);
+ fprintf(stderr, "libpng warning no. %s: %s",
+ warning_number, warning_message + offset);
+ fprintf(stderr, PNG_STRING_NEWLINE);
}
else
- fprintf(stderr, "libpng warning: %s\n", warning_message);
+ {
+ fprintf(stderr, "libpng warning: %s",
+ warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
}
else
# endif
- fprintf(stderr, "libpng warning: %s\n", warning_message);
+ {
+ fprintf(stderr, "libpng warning: %s", warning_message);
+ fprintf(stderr, PNG_STRING_NEWLINE);
+ }
#else
- warning_message = warning_message; /* make compiler happy */
+ warning_message = warning_message; /* Make compiler happy */
#endif
- png_ptr = png_ptr; /* make compiler happy */
+ png_ptr = png_ptr; /* Make compiler happy */
}
-#endif /* PNG_NO_WARNINGS */
+#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
projects / wxWidgets.git / blobdiff