bool DocDir::LoadLinks(const String& package)
{
String f = LoadFile(DocFile(package, "links"));
CParser p(f);
ArrayMap<DocKey, Entry>& pk = dir.GetAdd(package);
try {
while(!p.IsEof()) {
if(p.Id("LINK")) {
DocKey key;
p.PassChar('(');
if(!ReadCode(p, key)) return false;
p.PassChar(',');
String link = p.ReadString();
p.PassChar(')');
Entry& e = pk.GetAdd(key);
e.text = link;
e.type = LINK;
}
if(p.Id("IGNORED")) {
DocKey key;
p.PassChar('(');
if(!ReadCode(p, key)) return false;
p.PassChar(')');
Entry& e = pk.GetAdd(key);
e.text.Clear();
e.type = IGNORED;
}
}
return true;
}
catch(CParser::Error) {
return false;
}
}
void Scan(void)
{
char code[20];
char name[20];
FILE *file;
time_t mytime;
mytime = time(NULL);
while(1)
{
ReadCode(code);
GetName(name, code);
time(&mytime);
// printf("FILE OPENED\n");
printf("\n%s\t\t%s", name, ctime(&mytime));
file = fopen("LOG", "a+");
fprintf(file, "%s\t\t%s", name, ctime(&mytime));
fclose(file);
}
}
int HVS_B0307::ReadVoltage(__u16* v)
{
__u16 code;
int rc=ReadCode(&code);
if ( rc&CAMAC_CC_ERRORS ) return rc;
*v = Voltage(code);
return rc;
}
int HVS_B0307::ReadOverloadValue(int &overload_code)
{
__u16 code;
int rc=ReadCode(&code);
if ( rc&CAMAC_CC_ERRORS ) return rc;
overload_code=(code&OverloadMask)>>12;
return rc;
}
int HVS_B0307::ReadOverload(bool* over)
{
__u16 code;
int rc=ReadCode(&code);
if ( rc&CAMAC_CC_ERRORS ) return rc;
*over = Overload(code);
return rc;
}
int HVS_B0307::ReadState(bool* s, bool* over)
{
__u16 code;
int rc=ReadCode(&code);
if ( rc&CAMAC_CC_ERRORS ) return rc;
*s = On(code);
if ( over ) *over = Overload(code);
return rc;
}
int DocDir::ReadDocHeader(const char *filename, DocKey& key)
{
FileIn in(filename);
if(!in) return -1;
String l = in.GetLine();
CParser p(l);
if(!p.Id("ITEM") || !p.Char('(') || !ReadCode(p, key)) return -1;
p.Char(')');
if(p.Id("EXTERNAL"))
return EXTERNAL;
return NORMAL;
}
void NewUser(void)
{
FILE *file;
char name[100];
char code[100];
if(users != NULL)
free(users);
FillUsers();
do
{
printf("USERNAME: "******"%s", name);
}while(CheckName(name));
do
{
ReadCode(code);
printf("CODE: %s\n", code);
if(CheckCode(code))
printf("Code is already in use!\n");
else
{
printf("Done.\n");
break;
}
}while(1);
if((file = fopen("USERS", "a+")) == NULL)
{
perror("Failed to open file!\n");
exit(1);
}
else
{
fprintf(file, "%s\t\t%s\r\n", name, code);
fclose(file);
}
}
String DocDir::GetText(const DocKey& key) const
{
String s = LoadFile(GetFilePath(key));
if(s.IsEmpty()) return Null;
CParser p(s);
DocKey dummy;
if(!p.Id("ITEM") || !p.Char('(') || !ReadCode(p, dummy)) return "Invalid file";
p.Char(')');
p.Id("EXTERNAL");
String text;
while(p.Id("TEXT")) {
p.Char('(');
if(p.IsString())
text.Cat(p.ReadString());
else
return "Invalid file";
p.Char(')');
}
return p.Id("END_ITEM") ? text : "Invalid file";
}
int Shader::CreateShaderObj(const char* filename, int shaderType, GLuint* shaderId){
char *code = NULL;
int rc = 0;
// create a shader handle
*shaderId = glCreateShader(shaderType);
// read the code
code = ReadCode(filename);
if (code == NULL) return(-1);
// attach the source to the shaders
const char* _code = code;
glShaderSource(*shaderId, 1, &_code, NULL);
// compile the code
glCompileShader(*shaderId);
// check for errors
glGetShaderiv(*shaderId, GL_COMPILE_STATUS, &rc);
if (rc != GL_TRUE) {
GLsizei length;
GLsizei bufSize = 0;
char *error = NULL;
fprintf(stderr, "Error when creating a shader \n");
glGetShaderiv(*shaderId, GL_INFO_LOG_LENGTH, &bufSize);
error = (char *)malloc(bufSize*sizeof(char) + 1);
if (error != NULL) {
glGetShaderInfoLog(*shaderId, bufSize, &length, error);
fprintf(stderr, "%s \n", error);
}
if (error != NULL) free(error);
rc = -1;
}
else rc = 0;
if (code != NULL) free(code); // free the source code of the shader
return(rc);
}
void Interpret(int argc, char *argv[])
{
printf(" Loading and Resolving References ...\n");
InitializeInterpreter(argc, argv);
CodeFile = fopen(CodeFileName,"r");
if (CodeFile == NULL)
printf("%s NOT FOUND. \n",CodeFileName);
else
{
ReadCode(CodeFile);
if (ResolveReferences()) /*Mini Loader Here*/
{
printf(" Begin Execution:\n");
Execute();
printf(" End Execution.\n");
}
else
printf("Execution Inhibited.\n");
}
}
/***************************************************************
* *
* Name: GIFdecode Date: 06.10.92 *
* *
* Function: Decode image from GIF array *
* *
* Input: GIFarr[] - compressed image in GIF format *
* *
* Output: PIXarr[] - image (byte per pixel) *
* Width - image width *
* Height - image height *
* Ncols - number of colors *
* R[] - red components *
* G[] - green components *
* B[] - blue components *
* return - 0 - if O.K. *
* 1 - if error *
* *
***************************************************************/
int GIFdecode(byte *GIFarr, byte *PIXarr, int *Width, int *Height, int *Ncols, byte *R, byte *G, byte *B)
{
byte b, /* working variable */
FinChar; /* final character */
int i, /* working variable for loops */
BitsPixel, /* number of bits per pixel */
IniCodeSize, /* initial number of bits per code */
ClearCode, /* reset code */
EOFCode, /* end of file code */
FreeCode, /* first unused entry */
CurCode, /* current code */
InCode, /* input code */
OldCode, /* previous code */
PixMask, /* mask for pixel */
OutCount; /* output stack counter */
long Npix; /* number of pixels */
ptr1 = GIFarr;
ptr2 = PIXarr;
OldCode = 0;
FinChar = 0;
/* R E A D H E A D E R */
if (strncmp((char *)GIFarr,"GIF87a",6) && strncmp((char *)GIFarr,"GIF89a",6))
{
fprintf(stderr,"\nGIFinfo: not a GIF\n");
return 1;
}
ptr1 += 6;
ptr1 += 2; /* screen width ... ignore */
ptr1 += 2; /* screen height ... ignore */
b = *ptr1++;
BitsPixel = (b & 7) + 1; /* # of bits per pixel */
*Ncols = 1 << BitsPixel;
PixMask = (*Ncols) - 1; /* mask for pixel code */
if ((b & 0x80) == 0) { /* is there color map? */
fprintf(stderr,"\nGIFdecode: warning! no color map\n");
*Ncols = 0;
}
++ptr1; /* background color ... ignore */
b = *ptr1++; /* supposed to be NULL */
if (b) {
fprintf(stderr,"\nGIFdecode: bad screen descriptor\n");
return 1;
}
for (i=0; i<(*Ncols); i++) { /* global color map */
R[i] = *ptr1++;
G[i] = *ptr1++;
B[i] = *ptr1++;
}
b = *ptr1++; /* image separator */
if (b != ',') {
fprintf(stderr,"\nGIFdecode: no image separator\n");
return 1;
}
ptr1 += 2; /* left offset ... ignore */
ptr1 += 2; /* top offset ... ignore */
b = *ptr1++; /* image width */
*Width = b + 0x100*(*ptr1++);
b = *ptr1++; /* image height */
*Height = b + 0x100*(*ptr1++);
b = *ptr1++; /* local colors, interlace */
if ((b & 0xc0) != 0) {
fprintf(stderr,
"\nGIFdecode: unexpected item (local colors or interlace)\n");
return 1;
}
IniCodeSize = *ptr1++;
CurCodeSize = ++IniCodeSize;
CurMaxCode = (1 << IniCodeSize);
ClearCode = (1 << (IniCodeSize - 1));
EOFCode = ClearCode + 1;
FreeCode = ClearCode + 2;
/* D E C O D E I M A G E */
Npix =(long) (*Width) * (*Height);
OutCount = 0;
CurBit = -1;
CurCode = ReadCode();
while (Npix > 0) {
if (CurCode < 0) {
fprintf(stderr,"\nGIFdecode: corrupted GIF (zero block length)\n");
return 1;
}
if (CurCode == EOFCode) {
fprintf(stderr,"\nGIFdecode: corrupted GIF (unexpected EOF)\n");
return 1;
}
if (CurCode == ClearCode) { /* clear code ... reset */
CurCodeSize = IniCodeSize;
CurMaxCode = (1 << IniCodeSize);
FreeCode = ClearCode + 2;
OldCode = CurCode = ReadCode();
FinChar = CurCode;
OutPixel(FinChar);
Npix--;
} else { /* image code */
InCode = CurCode;
if (CurCode >= FreeCode) {
CurCode = OldCode;
OutCode[OutCount++] = FinChar;
}
while (CurCode > PixMask) { /* build output pixel chain */
if (OutCount >= TSIZE) {
fprintf(stderr,"\nGIFdecode: corrupted GIF (big output count)\n");
return 1;
}
OutCode[OutCount++] = Suffix[CurCode];
CurCode = Prefix[CurCode];
}
FinChar = CurCode;
OutCode[OutCount++] = FinChar;
for (i=OutCount-1; i>=0; i--) { /* put out pixel chain */
OutPixel(OutCode[i]);
Npix--;
}
OutCount = 0;
Prefix[FreeCode] = OldCode; /* build the tables */
Suffix[FreeCode] = FinChar;
OldCode = InCode;
FreeCode++; /* move pointer */
if (FreeCode >= CurMaxCode) {
if (CurCodeSize < BITS) {
CurCodeSize++;
CurMaxCode *= 2;
}
}
}
CurCode = ReadCode();
}
return 0;
}
Texture *
LoadGIF(FILE *fp, char *fname )
{
Texture *texture;
int filesize, numcols;
register unsigned char ch, ch1;
register byte *ptr, *ptr1;
register int i;
BitOffset=0;
XC=0;
YC=0;
Pass=0;
/* find the size of the file */
fseek(fp, 0L, 2);
filesize = ftell(fp);
fseek(fp, 0L, 0);
if (!(ptr = RawGIF = (byte *) malloc(filesize)))
fatal_error("not enough memory to read gif file");
if (!(Raster = (byte *) malloc(filesize))) {
free( ptr );
fatal_error("not enough memory to read gif file");
}
if (fread(ptr, filesize, 1, fp) != 1)
fatal_error("GIF data read failed");
if (strncmp(ptr, id, 6))
fatal_error("not a GIF file");
ptr += 6;
/* Get variables from the GIF screen descriptor */
ch = NEXTBYTE;
RWidth = ch + 0x100 * NEXTBYTE; /* screen dimensions... not used. */
ch = NEXTBYTE;
RHeight = ch + 0x100 * NEXTBYTE;
if (Verbose)
fprintf(stderr, "screen dims: %dx%d.\n", RWidth, RHeight);
ch = NEXTBYTE;
HasColormap = ((ch & COLORMAPMASK) ? True : False);
BitsPerPixel = (ch & 7) + 1;
numcols = ColorMapSize = 1 << BitsPerPixel;
BitMask = ColorMapSize - 1;
printf("ColorMapSize = %d\n",ColorMapSize);
Background = NEXTBYTE; /* background color... not used. */
if (NEXTBYTE) /* supposed to be NULL */
fatal_error("corrupt GIF file (bad screen descriptor)");
/* Read in global colormap. */
if (HasColormap) {
if (Verbose)
fprintf(stderr, "%s is %dx%d, %d bits per pixel, (%d colors).\n",
fname, RWidth,RHeight,BitsPerPixel, ColorMapSize);
for (i = 0; i < ColorMapSize; i++) {
Red[i] = NEXTBYTE;
Green[i] = NEXTBYTE;
Blue[i] = NEXTBYTE;
used[i] = 0;
}
numused = 0;
} /* else no colormap in GIF file */
/* Check for image seperator */
if (NEXTBYTE != IMAGESEP)
fatal_error("corrupt GIF file (no image separator)");
/* Now read in values from the image descriptor */
ch = NEXTBYTE;
LeftOfs = ch + 0x100 * NEXTBYTE;
ch = NEXTBYTE;
TopOfs = ch + 0x100 * NEXTBYTE;
ch = NEXTBYTE;
Width = ch + 0x100 * NEXTBYTE;
ch = NEXTBYTE;
Height = ch + 0x100 * NEXTBYTE;
Interlace = ((NEXTBYTE & INTERLACEMASK) ? True : False);
if (Verbose)
fprintf(stderr, "Reading a %d by %d %sinterlaced image...",
Width, Height, (Interlace) ? "" : "non-");
texture = new_texture( Width, Height );
/* Note that I ignore the possible existence of a local color map.
* I'm told there aren't many files around that use them, and the spec
* says it's defined for future use. This could lead to an error
* reading some files.
*/
/* Start reading the raster data. First we get the intial code size
* and compute decompressor constant values, based on this code size.
*/
CodeSize = NEXTBYTE;
ClearCode = (1 << CodeSize);
EOFCode = ClearCode + 1;
FreeCode = FirstFree = ClearCode + 2;
/* The GIF spec has it that the code size is the code size used to
* compute the above values is the code size given in the file, but the
* code size used in compression/decompression is the code size given in
* the file plus one. (thus the ++).
*/
CodeSize++;
InitCodeSize = CodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
/* Read the raster data. Here we just transpose it from the GIF array
* to the Raster array, turning it from a series of blocks into one long
* data stream, which makes life much easier for ReadCode().
*/
ptr1 = Raster;
do {
ch = ch1 = NEXTBYTE;
while (ch--) *ptr1++ = NEXTBYTE;
if ((ptr - Raster) > filesize)
fatal_error("corrupt GIF file (unblock)");
} while(ch1);
free(RawGIF); /* We're done with the raw data now... */
if (Verbose) {
fprintf(stderr, "done.\n");
fprintf(stderr, "Decompressing...");
}
Image = texture->texels;
BytesPerScanline = Width;
/* Decompress the file, continuing until you see the GIF EOF code.
* One obvious enhancement is to add checking for corrupt files here.
*/
Code = ReadCode();
while (Code != EOFCode) {
/* Clear code sets everything back to its initial value, then reads the
* immediately subsequent code as uncompressed data.
*/
if (Code == ClearCode) {
CodeSize = InitCodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
FreeCode = FirstFree;
CurCode = OldCode = Code = ReadCode();
FinChar = CurCode & BitMask;
AddToPixel(FinChar);
}
else {
/* If not a clear code, then must be data: save same as CurCode and InCode */
CurCode = InCode = Code;
/* If greater or equal to FreeCode, not in the hash table yet;
* repeat the last character decoded
*/
if (CurCode >= FreeCode) {
CurCode = OldCode;
OutCode[OutCount++] = FinChar;
}
/* Unless this code is raw data, pursue the chain pointed to by CurCode
* through the hash table to its end; each code in the chain puts its
* associated output code on the output queue.
*/
while (CurCode > BitMask) {
if (OutCount > 1024) {
fprintf(stderr,"\nCorrupt GIF file (OutCount)!\n");
exit(1); /* calling 'exit(-1)' dumps core, so I don't */
}
OutCode[OutCount++] = Suffix[CurCode];
CurCode = Prefix[CurCode];
}
/* The last code in the chain is treated as raw data. */
FinChar = CurCode & BitMask;
OutCode[OutCount++] = FinChar;
/* Now we put the data out to the Output routine.
* It's been stacked LIFO, so deal with it that way...
*/
for (i = OutCount - 1; i >= 0; i--)
AddToPixel(OutCode[i]);
OutCount = 0;
/* Build the hash table on-the-fly. No table is stored in the file. */
Prefix[FreeCode] = OldCode;
Suffix[FreeCode] = FinChar;
OldCode = InCode;
/* Point to the next slot in the table. If we exceed the current
* MaxCode value, increment the code size unless it's already 12. If it
* is, do nothing: the next code decompressed better be CLEAR
*/
FreeCode++;
if (FreeCode >= MaxCode) {
if (CodeSize < 12) {
CodeSize++;
MaxCode *= 2;
ReadMask = (1 << CodeSize) - 1;
}
}
}
Code = ReadCode();
}
free(Raster);
if (Verbose)
fprintf(stderr, "done.\n");
else
fprintf(stderr,"(of which %d are used)\n",numused);
remap(texture);
return texture;
}
int readGifImage(const char *name,_image *im) {
register byte ch, ch1;
register byte *ptr, *ptr1;
register int i, block;
int npixels, maxpixels, aspect, filesize;
float normaspect;
int OutCount = 0, /* Decompressor output 'stack count' */
RWidth, RHeight, /* screen dimensions */
/*LeftOfs, TopOfs, image offset */
BitsPerPixel, /* Bits per pixel, read from GIF header */
ColorMapSize, /* number of colors */
Background, /* background color */
InitCodeSize, /* Starting code size, used during Clear */
Code, /* Value returned by ReadCode */
MaxCode, /* limiting value for current code size */
ClearCode, /* GIF clear code */
EOFCode, /* GIF end-of-information code */
CurCode, OldCode=0, InCode, /* Decompressor variables */
FirstFree, /* First free code, generated per GIF spec */
FreeCode, /* Decompressor,next free slot in hash table */
FinChar=0, /* Decompressor variable */
BitMask, /* AND mask for data size */
Misc; /* miscellaneous bits (interlace, local cmap)*/
int Interlace, HasColormap;
/* not used
*/
/* char header[10]; */
/* The hash table used by the decompressor */
int Prefix[4096];
int Suffix[4096];
/* An output array used by the decompressor */
int OutCode[4097];
/* initialize variables */
BitOffset = XC = YC = Pass = OutCount = npixels = maxpixels = 0;
RawGIF = Raster = NULL;
gif89 = 0;
#ifdef WIN32
fp = fopen(name,"rb");
#else
fp = fopen(name,"r");
#endif
fp = fopen(name,"rb");
if (!fp) {
return(GifError("could not open a GIF file"));
}
/* find the size of the file */
fseek(fp, 0L, 2);
filesize = ftell(fp);
fseek(fp, 0L, 0);
/* the +256's are so we can read truncated GIF files without fear of
segmentation violation */
if (!(ptr = RawGIF = (byte *) ImageIO_alloc(filesize+256)))
return( GifError("not enough memory to read gif file") );
if (!(Raster = (byte *) ImageIO_alloc(filesize+256)))
return( GifError("not enough memory to read gif file") );
if (fread(ptr, filesize, 1, fp) != 1)
return( GifError("GIF data read failed") );
if (strncmp((char *) ptr, id87, 6)==0) gif89 = 0;
else if (strncmp((char *) ptr, id89, 6)==0) gif89 = 1;
else return( GifError("not a GIF file"));
ptr += 6;
/* Get variables from the GIF screen descriptor */
ch = NEXTBYTE;
RWidth = ch + 0x100 * NEXTBYTE; /* screen dimensions... not used. */
ch = NEXTBYTE;
RHeight = ch + 0x100 * NEXTBYTE;
use(RWidth);
use(RHeight);
ch = NEXTBYTE;
HasColormap = ((ch & COLORMAPMASK) ? TRUE : FALSE);
BitsPerPixel = (ch & 7) + 1;
ColorMapSize = 1 << BitsPerPixel;
BitMask = ColorMapSize - 1;
Background = NEXTBYTE; /* background color... not used. */
use(Background);
aspect = NEXTBYTE;
if (aspect) {
if (!gif89) return(GifError("corrupt GIF file (screen descriptor)"));
else normaspect = (float) (aspect + 15) / 64.0f; /* gif89 aspect ratio */
if (DEBUG) fprintf(stderr,"GIF89 aspect = %f\n", normaspect);
}
/* Read in global colormap. */
if (HasColormap)
{
r = (byte *) ImageIO_alloc(ColorMapSize * sizeof(byte));
g = (byte *) ImageIO_alloc(ColorMapSize * sizeof(byte));
b = (byte *) ImageIO_alloc(ColorMapSize * sizeof(byte));
for (i = 0; i < ColorMapSize; i++) {
r[i] = NEXTBYTE;
g[i] = NEXTBYTE;
b[i] = NEXTBYTE;
}
}
else {
/* no colormap in GIF file */
/* put std EGA palette (repeated 16 times) into colormap, for lack of
anything better to do */
ColorMapSize = 256;
r = (byte *) ImageIO_alloc(256 * sizeof(byte));
g = (byte *) ImageIO_alloc(256 * sizeof(byte));
b = (byte *) ImageIO_alloc(256 * sizeof(byte));
for (i = 0; i < 256; i++) {
r[i] = EGApalette[i&15][0];
g[i] = EGApalette[i&15][1];
b[i] = EGApalette[i&15][2];
}
}
/* possible things at this point are:
* an application extension block
* a comment extension block
* an (optional) graphic control extension block
* followed by either an image
* or a plaintext extension
*/
while (1) {
block = NEXTBYTE;
if (block == EXTENSION) { /* parse extension blocks */
int i, fn, blocksize, aspnum, aspden;
/* read extension block */
fn = NEXTBYTE;
if (DEBUG) fprintf(stderr,"GIF extension type 0x%02x\n", fn);
if (fn == 'R') { /* GIF87 aspect extension */
blocksize = NEXTBYTE;
if (blocksize == 2) {
aspnum = NEXTBYTE;
aspden = NEXTBYTE;
if (aspden>0 && aspnum>0)
normaspect = (float) aspnum / (float) aspden;
else { normaspect = 1.0; aspnum = aspden = 1; }
if (DEBUG) fprintf(stderr,"GIF87 aspect extension: %d:%d = %f\n\n",
aspnum, aspden,normaspect);
}
else {
for (i=0; i<blocksize; i++) (void)NEXTBYTE;
}
}
else if (fn == 0xFE) { /* Comment Extension. just eat it */
int ch, j, sbsize;
if (DEBUG) fprintf(stderr,"Comment extension: ");
/* read (and ignore) data sub-blocks */
do {
j = 0; sbsize = NEXTBYTE;
while (j<sbsize) {
ch = NEXTBYTE; j++;
if (DEBUG) fprintf(stderr,"%c", ch);
}
} while (sbsize);
if (DEBUG) fprintf(stderr,"\n\n");
}
else if (fn == 0x01) { /* PlainText Extension */
int j,sbsize,ch;
int tgLeft, tgTop, tgWidth, tgHeight, cWidth, cHeight, fg, bg;
/* SetISTR(ISTR_WARNING,
"PlainText extension found in GIF file. Ignored.");*/
sbsize = NEXTBYTE;
tgLeft = NEXTBYTE; tgLeft += (NEXTBYTE)<<8;
tgTop = NEXTBYTE; tgTop += (NEXTBYTE)<<8;
tgWidth = NEXTBYTE; tgWidth += (NEXTBYTE)<<8;
tgHeight = NEXTBYTE; tgHeight += (NEXTBYTE)<<8;
cWidth = NEXTBYTE;
cHeight = NEXTBYTE;
fg = NEXTBYTE;
bg = NEXTBYTE;
i=12;
for ( ; i<sbsize; i++) (void)NEXTBYTE; /* read rest of first subblock */
if (DEBUG) fprintf(stderr,
"PlainText: tgrid=%d,%d %dx%d cell=%dx%d col=%d,%d\n",
tgLeft, tgTop, tgWidth, tgHeight, cWidth, cHeight,
fg, bg);
/* read (and ignore) data sub-blocks */
do {
j = 0;
sbsize = NEXTBYTE;
while (j<sbsize) {
ch = NEXTBYTE; j++;
if (DEBUG) fprintf(stderr,"%c", ch);
}
} while (sbsize);
if (DEBUG) fprintf(stderr,"\n\n");
}
else if (fn == 0xF9) { /* Graphic Control Extension */
int j, sbsize;
if (DEBUG) fprintf(stderr,"Graphic Control extension\n\n");
/* SetISTR(ISTR_WARNING,
"Graphic Control Extension in GIF file. Ignored.");*/
/* read (and ignore) data sub-blocks */
do {
j = 0; sbsize = NEXTBYTE;
while (j<sbsize) { (void)NEXTBYTE; j++; }
} while (sbsize);
}
else { /* unknown extension */
int j, sbsize;
if (DEBUG) fprintf(stderr,"unknown GIF extension 0x%02x\n\n", fn);
/* SetISTR(ISTR_WARNING,
"Unknown extension 0x%02x in GIF file. Ignored.",fn);*/
/* read (and ignore) data sub-blocks */
do {
j = 0; sbsize = NEXTBYTE;
while (j<sbsize) { (void)NEXTBYTE; j++; }
} while (sbsize);
}
}
else if (block == IMAGESEP) break; /* read an image */
else if (block == TRAILER) {
return( GifError("no image data found in GIF file") );
}
else return (GifError("Unknown block type found in file."));
}
/* read in values from the image descriptor */
ch = NEXTBYTE;
/* LeftOfs = ch + 0x100 * NEXTBYTE;*/
ch = NEXTBYTE;
/* TopOfs = ch + 0x100 * NEXTBYTE; */
ch = NEXTBYTE;
ch = NEXTBYTE;
ch = NEXTBYTE;
Width = ch + 0x100 * NEXTBYTE;
ch = NEXTBYTE;
Height = ch + 0x100 * NEXTBYTE;
Misc = NEXTBYTE;
Interlace = ((Misc & INTERLACEMASK) ? TRUE : FALSE);
if (Misc & 0x80) {
for (i=0; i< 1 << ((Misc&7)+1); i++) {
r[i] = NEXTBYTE;
g[i] = NEXTBYTE;
b[i] = NEXTBYTE;
}
}
if (!HasColormap && !(Misc&0x80)) {
/* no global or local colormap */
/* SetISTR(ISTR_WARNING,
"No colormap in this GIF file. Assuming EGA colors.");*/
}
/* Start reading the raster data. First we get the intial code size
* and compute decompressor constant values, based on this code size.
*/
/* SetISTR(ISTR_FORMAT, "GIF%s, %d bits per pixel, %sinterlaced. (%d bytes)",
(gif89) ? "89" : "87", BitsPerPixel,
Interlace ? "" : "non-", filesize);*/
CodeSize = NEXTBYTE;
ClearCode = (1 << CodeSize);
EOFCode = ClearCode + 1;
FreeCode = FirstFree = ClearCode + 2;
/* The GIF spec has it that the code size is the code size used to
* compute the above values is the code size given in the file, but the
* code size used in compression/decompression is the code size given in
* the file plus one. (thus the ++).
*/
CodeSize++;
InitCodeSize = CodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
/* UNBLOCK:
* Read the raster data. Here we just transpose it from the GIF array
* to the Raster array, turning it from a series of blocks into one long
* data stream, which makes life much easier for ReadCode().
*/
ptr1 = Raster;
do {
ch = ch1 = NEXTBYTE;
while (ch--) {
*ptr1 = NEXTBYTE;
ptr1++; }
if ((ptr - RawGIF) > filesize) {
/* SetISTR(ISTR_WARNING,
"This GIF file seems to be truncated. Winging it.");*/
break;
}
} while(ch1);
ImageIO_free(RawGIF); RawGIF = NULL;
if (DEBUG) {
fprintf(stderr,"xv: LoadGIF() - picture is %dx%d, %d bits, %sinterlaced\n",
Width, Height, BitsPerPixel, Interlace ? "" : "non-");
}
/* Allocate the 'pic' */
maxpixels = Width*Height;
im->xdim = Width;
im->ydim = Height;
im->zdim = 1;
im->vdim = 3;
im->wdim = 1;
im->wordKind = WK_FIXED;
im->sign = SGN_UNSIGNED;
im->data = ImageIO_alloc(Width * Height * 3);
org = buf = (unsigned char *) im->data;
if (!org)
return( GifError("not enough memory for image buffer") );
/* Decompress the file, continuing until you see the GIF EOF code.
* One obvious enhancement is to add checking for corrupt files here.
*/
Code = ReadCode();
while (Code != EOFCode) {
/* Clear code sets everything back to its initial value, then reads the
* immediately subsequent code as uncompressed data.
*/
if (Code == ClearCode) {
CodeSize = InitCodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
FreeCode = FirstFree;
Code = ReadCode();
CurCode = OldCode = Code;
FinChar = CurCode & BitMask;
if (!Interlace) {
*buf++ = r[FinChar];
*buf++ = g[FinChar];
*buf++ = b[FinChar];
}
else DoInterlace((byte)FinChar);
npixels++;
}
else {
/* If not a clear code, must be data: save same as CurCode and InCode */
/* if we're at maxcode and didn't get a clear, stop loading */
if (FreeCode>=4096) {
printf("freecode blew up\n");
break;
}
CurCode = InCode = Code;
/* If greater or equal to FreeCode, not in the hash table yet;
* repeat the last character decoded
*/
if (CurCode >= FreeCode) {
CurCode = OldCode;
if (OutCount > 4096) {
printf("outcount1 blew up\n"); break; }
OutCode[OutCount++] = FinChar;
}
/* Unless this code is raw data, pursue the chain pointed to by CurCode
* through the hash table to its end; each code in the chain puts its
* associated output code on the output queue.
*/
while (CurCode > BitMask) {
if (OutCount > 4096) {
fprintf(stderr,"outcount2 blew up\n"); break;} /* corrupt file */
OutCode[OutCount++] = Suffix[CurCode];
CurCode = Prefix[CurCode];
}
if (OutCount > 4096) {
printf("outcount blew up\n"); break; }
/* The last code in the chain is treated as raw data. */
FinChar = CurCode & BitMask;
OutCode[OutCount++] = FinChar;
/* Now we put the data out to the Output routine.
* It's been stacked LIFO, so deal with it that way...
*/
/* safety thing: prevent exceeding range of 'pic' */
if (npixels + OutCount > maxpixels) OutCount = maxpixels-npixels;
npixels += OutCount;
if (!Interlace) for (i=OutCount-1; i>=0; i--) {
*buf++ = r[OutCode[i]];
*buf++ = g[OutCode[i]];
*buf++ = b[OutCode[i]];
}
else for (i=OutCount-1; i>=0; i--) DoInterlace((byte)OutCode[i]);
OutCount = 0;
/* Build the hash table on-the-fly. No table is stored in the file. */
Prefix[FreeCode] = OldCode;
Suffix[FreeCode] = FinChar;
OldCode = InCode;
/* Point to the next slot in the table. If we exceed the current
* MaxCode value, increment the code size unless it's already 12. If it
* is, do nothing: the next code decompressed better be CLEAR
*/
FreeCode++;
if (FreeCode >= MaxCode) {
if (CodeSize < 12) {
CodeSize++;
MaxCode *= 2;
ReadMask = (1 << CodeSize) - 1;
}
}
}
Code = ReadCode();
if (npixels >= maxpixels) break;
}
ImageIO_free(Raster); Raster = NULL;
if (npixels != maxpixels) {
/* SetISTR(ISTR_WARNING,"This GIF file seems to be truncated. Winging it.");*/
if (!Interlace)
memset(buf, 0, 3*(maxpixels-npixels)); /* clear to EOBuffer */
}
/* SetDirRButt(F_FORMAT, F_GIF);
SetDirRButt(F_COLORS, F_FULLCOLOR);*/
return 1;
}
BYTE *
Decompress(GIFIMAGEDESC *GifImageDesc, GIFHEAD *GifHead)
{
int i;
XC = 0;
YC = 0;
Pass = 0;
OutCount = 0;
BitOffset = 0;
DataMask = (1 << ((GifHead->PackedField & 0x07) +1)) -1;
Raster = GifImageDesc->GIFImage;
/* Check for image seperator */
/* Now read in values from the image descriptor */
IWidth = GifImageDesc->ImageWidth;
IHeight = GifImageDesc->ImageHeight;
Interlace = GifImageDesc->PackedField & 0x40;
/*
* Note that I ignore the possible existence of a local color map. I'm
* told there aren't many files around that use them, and the spec says
* it's defined for future use. This could lead to an error reading some
* files.
*/
/*
* Start reading the raster data. First we get the WORDial code size and
* compute decompressor constant values, based on this code size.
*/
CodeSize = GifImageDesc->CodeSize;
ClearCode = (1 << CodeSize);
EOFCode = ClearCode + 1;
FreeCode = FirstFree = ClearCode + 2;
/*
* The GIF spec has it that the code size is the code size used to compute
* the above values is the code size given in the file, but the code size
* used in compression/decompression is the code size given in the file
* plus one. (thus the ++).
*/
CodeSize++;
InitCodeSize = CodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
/*
* Read the raster data. Here we just transpose it from the GIF array to
* the Raster array, turning it from a series of blocks WORDo one long
* data stream, which makes life much easier for ReadCode().
*/
/* Allocate the Image */
if (!(Image = (BYTE *)malloc((size_t)IWidth*(size_t)IHeight))) {
printf("Out of memory");
exit(EXIT_FAILURE);
}
BytesPerScanline = IWidth;
/*
* Decompress the file, continuing until you see the GIF EOF code. One
* obvious enhancement is to add checking for corrupt files here.
*/
Code = ReadCode();
while (Code != EOFCode) {
/*
* Clear code sets everything back to its initial value, then reads
* the immediately subsequent code as uncompressed data.
*/
if (Code == ClearCode) {
CodeSize = InitCodeSize;
MaxCode = (1 << CodeSize);
ReadMask = MaxCode - 1;
FreeCode = FirstFree;
CurCode = OldCode = Code = ReadCode();
FinChar = CurCode & DataMask;
AddToPixel((BYTE)FinChar);
} else {
/*
* If not a clear code, then must be data: save same as CurCode
* and InCode
*/
CurCode = InCode = Code;
/*
* If greater or equal to FreeCode, not in the hash table yet;
* repeat the last character decoded
*/
if (CurCode >= FreeCode) {
CurCode = OldCode;
OutCode[OutCount++] = FinChar;
}
/*
* Unless this code is raw data, pursue the chain poWORDed to by
* CurCode through the hash table to its end; each code in the
* chain puts its associated output code on the output queue.
*/
while (CurCode > DataMask) {
if (OutCount > 1024) {
/*return error message*/
}
OutCode[OutCount++] = Suffix[CurCode];
CurCode = Prefix[CurCode];
}
/* The last code in the chain is treated as raw data. */
FinChar = CurCode & DataMask;
OutCode[OutCount++] = FinChar;
/*
* Now we put the data out to the Output routine. It's been
* stacked LIFO, so deal with it that way...
*/
for (i = OutCount - 1; i >= 0; i--)
AddToPixel((BYTE)OutCode[i]);
OutCount = 0;
/*
* Build the hash table on-the-fly. No table is stored in the
* file.
*/
Prefix[FreeCode] = OldCode;
Suffix[FreeCode] = FinChar;
OldCode = InCode;
/*
* PoWORD to the next slot in the table. If we exceed the current
* MaxCode value, increment the code size unless it's already 12.
* If it is, do nothing: the next code decompressed better be
* CLEAR
*/
FreeCode++;
if (FreeCode >= MaxCode)
if (CodeSize < 12) {
CodeSize++;
MaxCode *= 2;
ReadMask = (1 << CodeSize) - 1;
}
}
Code = ReadCode();
}
return Image;
}
/*=========================================================================
* FUNCTION: tVM_Execute
* TYPE: public interface
* OVERVIEW: execute a basic function
* INTERFACE:
* parameters:
* returns:
* the result of the basic function
*=======================================================================*/
int tVM_Execute()
{
int running = 1;
u8 bytecode;
u8 type;
u8 ac_flag;
s32 integer;
s32 stackindex,index;
tVMValue value1,value2,value3;
tVMValue retValue;// = (tVMValue*)mem_alloc(sizeof(tVMValue));
/* initialize the running Stack FP */
setFP(FirstFP);
/* seek to the entry function */
setFI(0);
/* initialize the code reader */
tVM_InitializeCodeReader();
/* execute the byte codes in loop */
while(running)
{
bytecode = ReadCode();
switch(bytecode)
{
case C_NOP:
break;
case C_CONST:
{
ReadVMValue(&value1);
PushVMValue(&value1);
break;
}
case C_LOAD:
{
ac_flag =ReadAccessFlag();
if(ac_flag == ACCESS_FLAG_GLOBAL)
stackindex = ReadIndex();
else
stackindex = ReadIndex() + getFP();
LoadVMValue(stackindex,&value1);
PushVMValue(&value1);
break;
}
case C_STORE:
{
ac_flag =ReadAccessFlag();
if(ac_flag == ACCESS_FLAG_GLOBAL)
stackindex = ReadIndex();
else
stackindex = ReadIndex() + getFP();
PopVMValue(&value1); /* pop the source value */
StoreVMValue(stackindex,&value1);
break;
}
case C_HEAP_LOAD:
{
type = ReadDataType();
PopVMValue(&value2); /* Pop Addr */
PopVMValue(&value1); /* Pop Base */
tVMValue_HeapLoad(value1.value.ptr_val+value2.value.int_val,type,&value3); /* load the heap memory */
PushVMValue(&value3); /* push the loaded value */
break;
}
case C_HEAP_STORE:
{
ptr32 addr;
type = ReadDataType();
PopVMValue(&value3); /* Pop Addr */
PopVMValue(&value2); /* Pop Base */
PopVMValue(&value1); /* Pop Value */
addr = (ptr32)(value2.value.ptr_val + value3.value.int_val);
if(value1.type != type)
{
tVMValue_ConvertType(&value1,type);
}
tVMValue_HeapStore(addr,&value1);
break;
}
case C_FORCE_LOAD:
{
ac_flag =ReadAccessFlag();
if(ac_flag == ACCESS_FLAG_GLOBAL)
stackindex = ReadIndex();
else
stackindex = ReadIndex() + getFP();
type = ReadDataType();
ForceLoadVMValue(stackindex,type,&value1);
PushVMValue(&value1);
break;
}
case C_ALLOC:
{
PopVMValue(&value1);
value2.type = PtrType;
value2.value.ptr_val = (ptr32)mem_alloc(value1.value.int_val);
memset(value2.value.ptr_val,0,value1.value.int_val);
PushVMValue(&value2);
break;
}
case C_ALLOC_ARRAY:
{
s32 i;
s32 dimension;
s32* index_ranges;
dimension = ReadInteger();
if(dimension < 1)
break;
index_ranges = (s32*)mem_alloc(sizeof(s32)*dimension);
for(i=0;i<dimension;i++)
{
PopVMValue(&value1);
index_ranges[dimension-i-1] = value1.value.int_val;
}
value1.type = PtrType;
value1.value.ptr_val = tVMValue_HeapAllocMultiArray(dimension,index_ranges,0);
PushVMValue(&value1);
mem_free(index_ranges);
break;
}
case C_FREE:
{
PopVMValue(&value1);
if(value1.value.ptr_val != NULL)
mem_free(value1.value.ptr_val);
break;
}
case C_FREE_ARRAY:
{
break;
}
case C_PUSH:
{
value1.type = ReadDataType();
value1.value.int_val = 0;
PushVMValue(&value1);
break;
}
case C_POP:
{
s32 i;
integer = ReadInteger();
for(i=0;i<integer;i++)
{
PopVMValue(&value1);
tVMValue_FreeSelf(&value1);
}
break;
}
case C_POP_RESTOP:
{
s32 i;
integer = ReadInteger();
PopVMValue(&value2); /* reserve top value */
for(i=0;i<integer;i++)
{
PopVMValue(&value1);
tVMValue_FreeSelf(&value1);
}
PushVMValue(&value2); /* push back top value */
break;
}
case C_CONVERT:
{
u8 type = (u8)ReadDataType();
PopVMValue(&value1);
tVMValue_ConvertType(&value1,type);
PushVMValue(&value1);
break;
}
case C_ADD:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_Add(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_SUB:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_Sub(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_MUL:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_Mul(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_DIV:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_Div(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_MOD:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_Mod(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_OPP:
{
PopVMValue(&value1);
tVMValue_Opp(&value1,&value2);
PushVMValue(&value2);
tVMValue_FreeSelf(&value1);
break;
}
case C_AND:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_AND(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_OR:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_OR(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_EQ:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_EQ(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_NOT_EQ:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_NOTEQ(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_LT:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_LT(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_LG:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_LG(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_LT_EQ:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_LTEQ(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_LG_EQ:
{
PopVMValue(&value2);
PopVMValue(&value1);
tVMValue_LGEQ(&value1,&value2,&value3);
PushVMValue(&value3);
tVMValue_FreeSelf(&value1);
tVMValue_FreeSelf(&value2);
break;
}
case C_FJP:
{
s32 size = ReadIndex();
PopVMValue(&value1);
if(value1.value.int_val == 0) /* if it is false */
addIP(size);
break;
}
case C_TJP:
{
s32 size = ReadIndex();
PopVMValue(&value1);
if(value1.value.int_val != 0) /* if it is true */
addIP(size);
break;
}
case C_JMP:
{
s32 size = ReadIndex();
addIP(size);
break;
}
case C_CALL:
{
/* read function name */
integer = ReadIndex();
/* push the stack frame */
PushInteger(getIP());
PushInteger(getFI());
PushInteger(getFP());
/* goto the call function code */
tVM_ReleaseCodeReader();
setFI(integer);
tVM_InitializeCodeReader();
/* set new FP,RP */
setFP(getSP());
break;
}
case C_INVOKE:
{
/* read function name */
index = ReadIndex();
/* execute the native function */
tNativeFunction_Invoke(index);
break;
}
case C_RET:
{
u32 param_bytes = ReadIndex();
/* get the result of the function */
retValue.type = NullType;
PopVMValue(&retValue);
/* if this is the start function,then exit the loop */
if(getFP() == FirstFP)
{
running = 0; /* set flag to stop while */
break;
}
/* restore last stack frame and return to last function code */
tVM_ReleaseCodeReader();
PopInteger(integer);
setFP(integer);
PopInteger(integer);
setFI(integer);
tVM_InitializeCodeReader();
PopInteger(integer);
setIP(integer);
/* pop the old parameters */
PopBytes(param_bytes);
/* push back result of last function */
PushVMValue(&retValue);
break;
}
}
}
/* close the code reader */
tVM_ReleaseCodeReader();
return 1;
}
bool DefFile::Read()
{
stream = new std::fstream(fileName.c_str(), std::ios::in);
if (stream != NULL)
{
try
{
lineno = 0;
NextToken();
while (!stream->eof())
{
if (token->IsEnd())
{
NextToken();
}
else if (!token->IsKeyword())
{
throw new std::runtime_error("Invalid directive");
}
else
{
switch(token->GetKeyword())
{
case edt_name:
ReadName();
break;
case edt_library:
ReadLibrary();
break;
case edt_exports:
ReadExports();
break;
case edt_imports:
ReadImports();
break;
case edt_description:
ReadDescription();
break;
case edt_stacksize:
ReadStacksize();
break;
case edt_heapsize:
ReadHeapsize();
break;
case edt_code:
ReadCode();
break;
case edt_data:
ReadData();
break;
case edt_sections:
ReadSections();
break;
default:
throw new std::runtime_error("Invalid directive");
}
}
}
}
catch (std::runtime_error *e)
{
std::cout << fileName << "(" << lineno << "): " << e->what() << std::endl ;
delete e;
}
delete stream;
}
else
{
std::cout << "File '" << name << "' not found." << std::endl;
}
return true;
}
