/* pngerror.c - stub functions for i/o and memory allocation
*
- * Last changed in libpng 1.6.13 [August 21, 2014]
- * Copyright (c) 1998-2014 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.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * 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
#ifdef PNG_WARNINGS_SUPPORTED
static void /* PRIVATE */
png_default_warning PNGARG((png_const_structrp png_ptr,
- png_const_charp warning_message));
-#endif /* PNG_WARNINGS_SUPPORTED */
+ png_const_charp warning_message));
+#endif /* WARNINGS */
/* 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,
#ifdef PNG_ERROR_TEXT_SUPPORTED
PNG_FUNCTION(void,PNGAPI
png_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
+ PNG_NORETURN)
{
#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 ((png_ptr->flags &
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0)
{
if (*error_message == PNG_LITERAL_SHARP)
{
if (error_message[offset] == ' ')
break;
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0)
{
int i;
for (i = 0; i < offset - 1; i++)
else
error_message += offset;
- }
+ }
- else
- {
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+ else
{
- msg[0] = '0';
- msg[1] = '\0';
- error_message = msg;
+ if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0)
+ {
+ msg[0] = '0';
+ msg[1] = '\0';
+ error_message = msg;
+ }
}
- }
- }
+ }
}
#endif
if (png_ptr != NULL && png_ptr->error_fn != NULL)
use the default handler, which will not return. */
png_default_error(png_ptr, "");
}
-#endif /* PNG_ERROR_TEXT_SUPPORTED */
+#endif /* ERROR_TEXT */
/* Utility to safely appends strings to a buffer. This never errors out so
* error checking is not required in the caller.
*/
size_t
png_safecat(png_charp buffer, size_t bufsize, size_t pos,
- png_const_charp string)
+ png_const_charp string)
{
if (buffer != NULL && pos < bufsize)
{
*/
png_charp
png_format_number(png_const_charp start, png_charp end, int format,
- png_alloc_size_t number)
+ png_alloc_size_t number)
{
int count = 0; /* number of digits output */
int mincount = 1; /* minimum number required */
case PNG_NUMBER_FORMAT_fixed:
/* Needs five digits (the fraction) */
mincount = 5;
- if (output || number % 10 != 0)
+ if (output != 0 || number % 10 != 0)
{
*--end = digits[number % 10];
output = 1;
case PNG_NUMBER_FORMAT_02u:
/* Expects at least 2 digits. */
mincount = 2;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case PNG_NUMBER_FORMAT_u:
*--end = digits[number % 10];
case PNG_NUMBER_FORMAT_02x:
/* This format expects at least two digits */
mincount = 2;
- /* FALL THROUGH */
+ /* FALLTHROUGH */
case PNG_NUMBER_FORMAT_x:
*--end = digits[number & 0xf];
++count;
/* Float a fixed number here: */
- if (format == PNG_NUMBER_FORMAT_fixed) if (count == 5) if (end > start)
+ if ((format == PNG_NUMBER_FORMAT_fixed) && (count == 5) && (end > start))
{
/* End of the fraction, but maybe nothing was output? In that case
* drop the decimal point. If the number is a true zero handle that
if (png_ptr != NULL)
{
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (png_ptr->flags&
- (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+ if ((png_ptr->flags &
+ (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0)
#endif
{
if (*warning_message == PNG_LITERAL_SHARP)
}
if (png_ptr != NULL && png_ptr->warning_fn != NULL)
(*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr),
- warning_message + offset);
+ warning_message + offset);
else
png_default_warning(png_ptr, warning_message + offset);
}
*/
void
png_warning_parameter(png_warning_parameters p, int number,
- png_const_charp string)
+ png_const_charp string)
{
if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT)
(void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string);
void
png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
- png_alloc_size_t value)
+ png_alloc_size_t value)
{
char buffer[PNG_NUMBER_BUFFER_SIZE];
png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
void
png_warning_parameter_signed(png_warning_parameters p, int number, int format,
- png_int_32 value)
+ png_int_32 value)
{
png_alloc_size_t u;
png_charp str;
void
png_formatted_warning(png_const_structrp png_ptr, png_warning_parameters p,
- png_const_charp message)
+ png_const_charp message)
{
/* The internal buffer is just 192 bytes - enough for all our messages,
* overflow doesn't happen because this code checks! If someone figures
*/
png_warning(png_ptr, msg);
}
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* WARNINGS */
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
void PNGAPI
png_benign_error(png_const_structrp png_ptr, png_const_charp error_message)
{
- if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ if ((png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) != 0)
{
# ifdef PNG_READ_SUPPORTED
if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
void /* PRIVATE */
png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
{
- if (png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN)
- png_warning(png_ptr, error_message);
- else
- png_error(png_ptr, error_message);
+ if ((png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN) != 0)
+ png_warning(png_ptr, error_message);
+ else
+ png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
void /* PRIVATE */
png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
{
- if (png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN)
- png_warning(png_ptr, error_message);
- else
- png_error(png_ptr, error_message);
+ if ((png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN) != 0)
+ png_warning(png_ptr, error_message);
+ else
+ png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
* if the character is invalid.
*/
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
-static PNG_CONST char png_digit[16] = {
+static const char png_digit[16] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'A', 'B', 'C', 'D', 'E', 'F'
};
int c = (int)(chunk_name >> ishift) & 0xff;
ishift -= 8;
- if (isnonalpha(c))
+ if (isnonalpha(c) != 0)
{
buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
buffer[iout++] = png_digit[(c & 0xf0) >> 4];
buffer[iout] = '\0';
}
}
-#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
+#endif /* WARNINGS || ERROR_TEXT */
#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
PNG_FUNCTION(void,PNGAPI
png_chunk_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
+ PNG_NORETURN)
{
char msg[18+PNG_MAX_ERROR_TEXT];
if (png_ptr == NULL)
png_error(png_ptr, msg);
}
}
-#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
+#endif /* READ && ERROR_TEXT */
#ifdef PNG_WARNINGS_SUPPORTED
void PNGAPI
png_warning(png_ptr, msg);
}
}
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* WARNINGS */
#ifdef PNG_READ_SUPPORTED
#ifdef PNG_BENIGN_ERRORS_SUPPORTED
png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp
error_message)
{
- if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
+ if ((png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) != 0)
png_chunk_warning(png_ptr, error_message);
else
# endif
}
#endif
-#endif /* PNG_READ_SUPPORTED */
+#endif /* READ */
void /* PRIVATE */
png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error)
* unconditionally does the right thing.
*/
# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
+ if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
# endif
# ifdef PNG_READ_SUPPORTED
# endif
# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
- else if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
+ else if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0)
# endif
# ifdef PNG_WRITE_SUPPORTED
{
# define fixed_message "fixed point overflow in "
# define fixed_message_ln ((sizeof fixed_message)-1)
- int iin;
+ unsigned int iin;
char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
memcpy(msg, fixed_message, fixed_message_ln);
iin = 0;
- if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
- {
- msg[fixed_message_ln + iin] = name[iin];
- ++iin;
- }
+ if (name != NULL)
+ while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
+ {
+ msg[fixed_message_ln + iin] = name[iin];
+ ++iin;
+ }
msg[fixed_message_ln + iin] = 0;
png_error(png_ptr, msg);
}
else
{
png_ptr->jmp_buf_ptr = png_voidcast(jmp_buf *,
- png_malloc_warn(png_ptr, jmp_buf_size));
+ png_malloc_warn(png_ptr, jmp_buf_size));
if (png_ptr->jmp_buf_ptr == NULL)
return NULL; /* new NULL return on OOM */
*/
static PNG_FUNCTION(void /* PRIVATE */,
png_default_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
+ PNG_NORETURN)
{
#ifdef PNG_CONSOLE_IO_SUPPORTED
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN)
{
#ifdef PNG_SETJMP_SUPPORTED
- if (png_ptr && png_ptr->longjmp_fn && png_ptr->jmp_buf_ptr)
+ if (png_ptr != NULL && png_ptr->longjmp_fn != NULL &&
+ png_ptr->jmp_buf_ptr != NULL)
png_ptr->longjmp_fn(*png_ptr->jmp_buf_ptr, val);
#else
PNG_UNUSED(png_ptr)
/* If control reaches this point, png_longjmp() must not return. The only
* choice is to terminate the whole process (or maybe the thread); to do
- * this the ANSI-C abort() function is used unless a different method is
+ * this the ANSI-C abort() function is used unless a different method is
* implemented by overriding the default configuration setting for
* PNG_ABORT().
*/
#endif
PNG_UNUSED(png_ptr) /* Make compiler happy */
}
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* WARNINGS */
/* This function is called when the application wants to use another method
* of handling errors and warnings. Note that the error function MUST NOT
*/
PNG_FUNCTION(void /* PRIVATE */, (PNGCBAPI
png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message),
- PNG_NORETURN)
+ PNG_NORETURN)
{
- const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_const_structrp png_ptr = png_nonconst_ptr;
png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
/* An error is always logged here, overwriting anything (typically a warning)
/* Missing longjmp buffer, the following is to help debugging: */
{
size_t pos = png_safecat(image->message, (sizeof image->message), 0,
- "bad longjmp: ");
+ "bad longjmp: ");
png_safecat(image->message, (sizeof image->message), pos,
error_message);
}
void /* PRIVATE */ PNGCBAPI
png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
{
- const png_const_structrp png_ptr = png_nonconst_ptr;
+ png_const_structrp png_ptr = png_nonconst_ptr;
png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
/* A warning is only logged if there is no prior warning or error. */
return result;
}
-#endif /* SIMPLIFIED READ/WRITE */
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif /* SIMPLIFIED READ || SIMPLIFIED_WRITE */
+#endif /* READ || WRITE */
projects / platform / upstream / libpng.git / blobdiff