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[libpng10] Imported from libpng-1.0.16.tar

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This commit is contained in:
Glenn Randers-Pehrson
2004-08-15 07:11:04 -05:00
parent 4fc3118b59
commit f47b4b1bf7
99 changed files with 3722 additions and 3976 deletions
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46
pngerror.c
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@@ -1,9 +1,9 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* libpng 1.0.15 - October 3, 2002
* libpng version 1.0.16 - August 15, 2004
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2002 Glenn Randers-Pehrson
* Copyright (c) 1998-2004 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.)
*
@@ -35,9 +35,9 @@ png_error(png_structp png_ptr, png_const_charp error_message)
char msg[16];
if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
{
int offset = 0;
if (*error_message == '#')
{
int offset;
for (offset=1; offset<15; offset++)
if (*(error_message+offset) == ' ')
break;
@@ -63,11 +63,11 @@ png_error(png_structp png_ptr, png_const_charp error_message)
}
}
#endif
if (png_ptr->error_fn != NULL)
if (png_ptr != NULL && png_ptr->error_fn != NULL)
(*(png_ptr->error_fn))(png_ptr, error_message);
/* if the following returns or doesn't exist, use the default function,
which will not return */
/* 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);
}
@@ -79,7 +79,7 @@ png_error(png_structp png_ptr, png_const_charp error_message)
void PNGAPI
png_warning(png_structp png_ptr, png_const_charp warning_message)
{
int offset = 0;
int offset = 0;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
#endif
@@ -91,11 +91,10 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
break;
}
}
if (png_ptr->warning_fn != NULL)
(*(png_ptr->warning_fn))(png_ptr,
(png_const_charp)(warning_message+offset));
if (png_ptr != NULL && png_ptr->warning_fn != NULL)
(*(png_ptr->warning_fn))(png_ptr, warning_message+offset);
else
png_default_warning(png_ptr, (png_const_charp)(warning_message+offset));
png_default_warning(png_ptr, warning_message+offset);
}
/* These utilities are used internally to build an error message that relates
@@ -104,10 +103,11 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
* to 63 bytes, the name characters are output as hex digits wrapped in []
* if the character is invalid.
*/
#define isnonalpha(c) ((c) < 41 || (c) > 122 || ((c) > 90 && (c) < 97))
#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' };
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'
};
static void /* PRIVATE */
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
@@ -137,7 +137,7 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
{
buffer[iout++] = ':';
buffer[iout++] = ' ';
png_memcpy(buffer+iout, error_message, 64);
png_strncpy(buffer+iout, error_message, 63);
buffer[iout+63] = 0;
}
}
@@ -190,26 +190,28 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
else
#endif
fprintf(stderr, "libpng error: %s\n", error_message);
#else
if (error_message)
/* make compiler happy */ ;
#endif
#ifdef PNG_SETJMP_SUPPORTED
# ifdef USE_FAR_KEYWORD
{
jmp_buf jmpbuf;
png_memcpy(jmpbuf,png_ptr->jmpbuf,sizeof(jmp_buf));
png_memcpy(jmpbuf,png_ptr->jmpbuf,png_sizeof(jmp_buf));
longjmp(jmpbuf, 1);
}
# else
longjmp(png_ptr->jmpbuf, 1);
# endif
#else
/* make compiler happy */ ;
if (png_ptr)
/* make compiler happy */ ;
PNG_ABORT();
#endif
#ifdef PNG_NO_CONSOLE_IO
/* make compiler happy */ ;
if (&error_message != NULL)
return;
#endif
}
/* This function is called when there is a warning, but the library thinks
@@ -245,9 +247,11 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
# endif
fprintf(stderr, "libpng warning: %s\n", warning_message);
#else
/* make compiler happy */ ;
if (warning_message)
/* appease compiler */ ;
return;
#endif
/* make compiler happy */ ;
if (png_ptr)
return;
}