static Image *ReadXBMImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
char
buffer[MaxTextExtent],
name[MaxTextExtent];
Image
*image;
ssize_t
y;
MagickBooleanType
status;
register IndexPacket
*indexes;
register ssize_t
i,
x;
register PixelPacket
*q;
register unsigned char
*p;
short int
hex_digits[256];
size_t
length;
unsigned char
*data;
size_t
bit,
byte,
bytes_per_line,
padding,
value,
version;
unsigned long
height,
width;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Read X bitmap header.
*/
width=0;
height=0;
while (ReadBlobString(image,buffer) != (char *) NULL)
if (sscanf(buffer,"#define %s %lu",name,&width) == 2)
if ((strlen(name) >= 6) &&
(LocaleCompare(name+strlen(name)-6,"_width") == 0))
break;
while (ReadBlobString(image,buffer) != (char *) NULL)
if (sscanf(buffer,"#define %s %lu",name,&height) == 2)
if ((strlen(name) >= 7) &&
(LocaleCompare(name+strlen(name)-7,"_height") == 0))
break;
image->columns=width;
image->rows=height;
image->depth=8;
image->storage_class=PseudoClass;
image->colors=2;
/*
Scan until hex digits.
*/
version=11;
while (ReadBlobString(image,buffer) != (char *) NULL)
{
if (sscanf(buffer,"static short %s = {",name) == 1)
version=10;
else
if (sscanf(buffer,"static unsigned char %s = {",name) == 1)
version=11;
else
if (sscanf(buffer,"static char %s = {",name) == 1)
version=11;
else
continue;
p=(unsigned char *) strrchr(name,'_');
if (p == (unsigned char *) NULL)
p=(unsigned char *) name;
else
p++;
if (LocaleCompare("bits[]",(char *) p) == 0)
break;
}
if ((image->columns == 0) || (image->rows == 0) ||
(EOFBlob(image) != MagickFalse))
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
/*
Initialize image structure.
*/
if (AcquireImageColormap(image,image->colors) == MagickFalse)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
/*
Initialize colormap.
*/
image->colormap[0].red=(Quantum) QuantumRange;
image->colormap[0].green=(Quantum) QuantumRange;
image->colormap[0].blue=(Quantum) QuantumRange;
image->colormap[1].red=(Quantum) 0;
image->colormap[1].green=(Quantum) 0;
image->colormap[1].blue=(Quantum) 0;
if (image_info->ping != MagickFalse)
{
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
/*
Initialize hex values.
*/
hex_digits[(int) '0']=0;
hex_digits[(int) '1']=1;
hex_digits[(int) '2']=2;
hex_digits[(int) '3']=3;
hex_digits[(int) '4']=4;
hex_digits[(int) '5']=5;
hex_digits[(int) '6']=6;
hex_digits[(int) '7']=7;
hex_digits[(int) '8']=8;
hex_digits[(int) '9']=9;
hex_digits[(int) 'A']=10;
hex_digits[(int) 'B']=11;
hex_digits[(int) 'C']=12;
hex_digits[(int) 'D']=13;
hex_digits[(int) 'E']=14;
hex_digits[(int) 'F']=15;
hex_digits[(int) 'a']=10;
hex_digits[(int) 'b']=11;
hex_digits[(int) 'c']=12;
hex_digits[(int) 'd']=13;
hex_digits[(int) 'e']=14;
hex_digits[(int) 'f']=15;
hex_digits[(int) 'x']=0;
hex_digits[(int) ' ']=(-1);
hex_digits[(int) ',']=(-1);
hex_digits[(int) '}']=(-1);
hex_digits[(int) '\n']=(-1);
hex_digits[(int) '\t']=(-1);
/*
Read hex image data.
*/
padding=0;
if (((image->columns % 16) != 0) &&
((image->columns % 16) < 9) && (version == 10))
padding=1;
bytes_per_line=(image->columns+7)/8+padding;
length=(size_t) image->rows;
data=(unsigned char *) AcquireQuantumMemory(length,bytes_per_line*
sizeof(*data));
if (data == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
p=data;
if (version == 10)
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); (i+=2))
{
value=(size_t) XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
if ((padding == 0) || (((i+2) % bytes_per_line) != 0))
*p++=(unsigned char) (value >> 8);
}
else
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); i++)
sizeof(*data));
if (data == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
p=data;
if (version == 10)
for (i=0; i < (long) (bytes_per_line*image->rows); (i+=2))
{
value=(unsigned long) XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
if ((padding == 0) || (((i+2) % bytes_per_line) != 0))
*p++=(unsigned char) (value >> 8);
}
else
for (i=0; i < (long) (bytes_per_line*image->rows); i++)
{
value=(unsigned long) XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
}
/*
Convert X bitmap image to pixel packets.
*/
p=data;
for (y=0; y < (long) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
bit=0;
byte=0;
for (x=0; x < (long) image->columns; x++)
sizeof(*data));
if (data == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
p=data;
if (version == 10)
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); (i+=2))
{
value=(size_t) XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
if ((padding == 0) || (((i+2) % bytes_per_line) != 0))
*p++=(unsigned char) (value >> 8);
}
else
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); i++)
{
value=(size_t) XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
}
/*
Convert X bitmap image to pixel packets.
*/
p=data;
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
indexes=GetAuthenticIndexQueue(image);
bit=0;
byte=0;
for (x=0; x < (ssize_t) image->columns; x++)
sizeof(*data));
if (data == (unsigned char *) NULL)
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
p=data;
if (version == 10)
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); (i+=2))
{
value=XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
if ((padding == 0) || (((i+2) % bytes_per_line) != 0))
*p++=(unsigned char) (value >> 8);
}
else
for (i=0; i < (ssize_t) (bytes_per_line*image->rows); i++)
{
value=XBMInteger(image,hex_digits);
*p++=(unsigned char) value;
}
/*
Convert X bitmap image to pixel packets.
*/
p=data;
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
bit=0;
byte=0;
for (x=0; x < (ssize_t) image->columns; x++)
{
