First commit ~0,10
This commit is contained in:
459
G/UTIL/GIFTEXT.C
Normal file
459
G/UTIL/GIFTEXT.C
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@ -0,0 +1,459 @@
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/*****************************************************************************
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* "Gif-Lib" - Yet another gif library. *
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* *
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* Written by: Gershon Elber Ver 0.1, Jun. 1989 *
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******************************************************************************
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* Program to dump GIF file content as TEXT information *
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* Options: *
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* -q : quite printing mode. *
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* -c : include the color maps as well. *
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* -e : include encoded information packed as bytes as well. *
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* -z : include encoded information (12bits) codes as result from the zl alg. *
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* -p : dump pixel information instead of encoded information. *
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* -r : same as -p but dump one pixel as one byte in binary form with no *
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* other information. This will create a file of size Width by Height. *
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* -h : on line help. *
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******************************************************************************
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* History: *
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* 28 Jun 89 - Version 1.0 by Gershon Elber. *
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* 21 Dec 89 - Fix segmentation fault problem in PrintCodeBlock (Version 1.1) *
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* 25 Dec 89 - Add the -r flag for raw output. *
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*****************************************************************************/
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#ifdef __MSDOS__
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#include <stdlib.h>
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#include <alloc.h>
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#include <conio.h>
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#include <io.h>
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#endif /* __MSDOS__ */
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#include <stdio.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include "gif_lib.h"
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#include "getarg.h"
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#define PROGRAM_NAME "GifText"
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#define MAKE_PRINTABLE(c) (isprint(c) ? (c) : ' ')
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#ifdef __MSDOS__
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extern unsigned int
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_stklen = 16384; /* Increase default stack size. */
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#endif /* __MSDOS__ */
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#ifdef SYSV
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static char *VersionStr =
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"Gif library module,\t\tGershon Elber\n\
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(C) Copyright 1989 Gershon Elber, Non commercial use only.\n";
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static char
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*CtrlStr = "GifText q%- c%- e%- z%- p%- r%- h%- GifFile!*s";
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#else
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static char
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*VersionStr =
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PROGRAM_NAME
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GIF_LIB_VERSION
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" Gershon Elber, "
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__DATE__ ", " __TIME__ "\n"
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"(C) Copyright 1989 Gershon Elber, Non commercial use only.\n";
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static char
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*CtrlStr =
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PROGRAM_NAME
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" q%- c%- e%- z%- p%- r%- h%- GifFile!*s";
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#endif /* SYSV */
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static void PrintCodeBlock(GifFileType *GifFile, GifByteType *CodeBlock, int Reset);
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static void PrintPixelBlock(GifByteType *PixelBlock, int Len, int Reset);
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static void PrintExtBlock(GifByteType *Extension, int Reset);
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static void PrintLZCodes(GifFileType *GifFile);
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/******************************************************************************
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* Interpret the command line and scan the given GIF file. *
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******************************************************************************/
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void main(int argc, char **argv)
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{
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int i, j, ExtCode, CodeSize, Error, NumFiles, Len,
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ColorMapFlag = FALSE, EncodedFlag = FALSE, LZCodesFlag = FALSE,
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PixelFlag = FALSE, HelpFlag = FALSE, RawFlag = FALSE, ImageNum = 1;
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char *GifFileName, **FileName = NULL;
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GifPixelType *Line;
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GifRecordType RecordType;
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GifByteType *CodeBlock, *Extension;
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GifFileType *GifFile;
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if ((Error = GAGetArgs(argc, argv, CtrlStr,
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&GifQuitePrint, &ColorMapFlag, &EncodedFlag,
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&LZCodesFlag, &PixelFlag, &RawFlag, &HelpFlag,
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&NumFiles, &FileName)) != FALSE ||
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(NumFiles > 1 && !HelpFlag)) {
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if (Error)
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GAPrintErrMsg(Error);
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else if (NumFiles > 1)
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GIF_MESSAGE("Error in command line parsing - one GIF file please.");
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GAPrintHowTo(CtrlStr);
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exit(1);
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}
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if (HelpFlag) {
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fprintf(stderr, VersionStr);
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GAPrintHowTo(CtrlStr);
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exit(0);
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}
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if (NumFiles == 1) {
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GifFileName = *FileName;
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if ((GifFile = DGifOpenFileName(*FileName)) == NULL) {
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PrintGifError();
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exit(-1);
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}
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}
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else {
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/* Use the stdin instead: */
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GifFileName = "Stdin";
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if ((GifFile = DGifOpenFileHandle(0)) == NULL) {
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PrintGifError();
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exit(-1);
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}
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}
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/* Because we write binary data - make sure no text will be written. */
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if (RawFlag) {
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ColorMapFlag = EncodedFlag = LZCodesFlag = PixelFlag = FALSE;
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#ifdef __MSDOS__
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setmode(1, O_BINARY); /* Make sure it is in binary mode. */
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#endif /* __MSDOS__ */
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}
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else {
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printf("\n%s:\n\n\tScreen Size - Width = %d, Height = %d.\n",
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GifFileName, GifFile -> SWidth, GifFile -> SHeight);
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printf("\tColorResolution = %d, BitsPerPixel = %d, BackGround = %d.\n",
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GifFile -> SColorResolution, GifFile -> SBitsPerPixel,
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GifFile -> SBackGroundColor);
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if (GifFile -> SColorMap)
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printf("\tHas Global Color Map.\n\n");
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else
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printf("\tNo Global Color Map.\n\n");
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if (ColorMapFlag && GifFile -> SColorMap) {
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printf("\tGlobal Color Map:\n");
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Len = 1 << GifFile -> SBitsPerPixel;
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for (i = 0; i < Len; i+=4) {
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for (j = 0; j < 4 && j < Len; j++) {
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printf("%3d: %02xh %02xh %02xh ", i + j,
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GifFile -> SColorMap[i + j].Red,
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GifFile -> SColorMap[i + j].Green,
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GifFile -> SColorMap[i + j].Blue);
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}
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printf("\n");
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}
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}
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}
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do {
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if (DGifGetRecordType(GifFile, &RecordType) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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switch (RecordType) {
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case IMAGE_DESC_RECORD_TYPE:
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if (DGifGetImageDesc(GifFile) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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if (!RawFlag) {
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printf("\nImage #%d:\n\n\tImage Size - Left = %d, Top = %d, Width = %d, Height = %d.\n",
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ImageNum++, GifFile -> ILeft, GifFile -> ITop,
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GifFile -> IWidth, GifFile -> IHeight);
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printf("\tImage is %s",
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GifFile -> IInterlace ? "Interlaced" :
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"Non Interlaced");
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if (GifFile -> IColorMap != NULL)
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printf(", BitsPerPixel = %d.\n",
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GifFile -> IBitsPerPixel);
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else
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printf(".\n");
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if (GifFile -> IColorMap)
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printf("\tImage Has Color Map.\n");
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else
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printf("\tNo Image Color Map.\n");
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if (ColorMapFlag && GifFile -> IColorMap) {
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Len = 1 << GifFile -> IBitsPerPixel;
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for (i = 0; i < Len; i+=4) {
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for (j = 0; j < 4 && j < Len; j++) {
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printf("%3d: %02xh %02xh %02xh ", i + j,
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GifFile -> IColorMap[i + j].Red,
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GifFile -> IColorMap[i + j].Green,
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GifFile -> IColorMap[i + j].Blue);
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}
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printf("\n");
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}
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}
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}
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if (EncodedFlag) {
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if (DGifGetCode(GifFile, &CodeSize, &CodeBlock) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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printf("\nImage LZ compressed Codes (Code Size = %d):\n",
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CodeSize);
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PrintCodeBlock(GifFile, CodeBlock, TRUE);
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while (CodeBlock != NULL) {
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if (DGifGetCodeNext(GifFile, &CodeBlock) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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PrintCodeBlock(GifFile, CodeBlock, FALSE);
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}
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}
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else if (LZCodesFlag) {
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PrintLZCodes(GifFile);
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}
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else if (PixelFlag) {
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Line = (GifPixelType *) malloc(GifFile -> IWidth *
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sizeof(GifPixelType));
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for (i = 0; i < GifFile -> IHeight; i++) {
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if (DGifGetLine(GifFile, Line, GifFile -> IWidth)
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== GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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PrintPixelBlock(Line, GifFile -> IWidth, i == 0);
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}
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PrintPixelBlock(NULL, GifFile -> IWidth, FALSE);
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free((char *) Line);
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}
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else if (RawFlag) {
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Line = (GifPixelType *) malloc(GifFile -> IWidth *
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sizeof(GifPixelType));
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for (i = 0; i < GifFile -> IHeight; i++) {
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if (DGifGetLine(GifFile, Line, GifFile -> IWidth)
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== GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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fwrite(Line, 1, GifFile -> IWidth, stdout);
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}
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free((char *) Line);
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}
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else {
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/* Skip the image: */
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if (DGifGetCode(GifFile, &CodeSize, &CodeBlock) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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while (CodeBlock != NULL) {
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if (DGifGetCodeNext(GifFile, &CodeBlock) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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}
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}
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break;
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case EXTENSION_RECORD_TYPE:
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if (DGifGetExtension(GifFile, &ExtCode, &Extension) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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if (!RawFlag) {
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printf("\nExtension Record (Ext Code = %d [%c]):\n",
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ExtCode, MAKE_PRINTABLE(ExtCode));
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PrintExtBlock(Extension, TRUE);
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}
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while (Extension != NULL) {
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if (DGifGetExtensionNext(GifFile, &Extension) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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PrintExtBlock(Extension, FALSE);
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}
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break;
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case TERMINATE_RECORD_TYPE:
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break;
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default: /* Should be traps by DGifGetRecordType */
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break;
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}
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}
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while (RecordType != TERMINATE_RECORD_TYPE);
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if (DGifCloseFile(GifFile) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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if (!RawFlag) printf("\nGif file terminated normally.\n");
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}
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/******************************************************************************
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* Print the given CodeBlock - a string in pascal notation (size in first *
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* place). Save local information so printing can be performed continuously, *
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* or reset to start state if Reset. If CodeBlock is NULL, output is flushed *
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******************************************************************************/
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static void PrintCodeBlock(GifFileType *GifFile, GifByteType *CodeBlock, int Reset)
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{
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static int CrntPlace = 0, Print = TRUE;
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static long CodeCount = 0;
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char c;
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int i, Percent, Len;
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long NumBytes;
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if (Reset || CodeBlock == NULL) {
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if (CodeBlock == NULL) {
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if (CrntPlace > 0) {
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if (Print) printf("\n");
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CodeCount += CrntPlace - 16;
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}
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if (GifFile -> IColorMap)
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NumBytes = ((((long) GifFile -> IWidth) * GifFile -> IHeight)
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* GifFile -> IBitsPerPixel) / 8;
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else
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NumBytes = ((((long) GifFile -> IWidth) * GifFile -> IHeight)
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* GifFile -> SBitsPerPixel) / 8;
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Percent = 100 * CodeCount / NumBytes;
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printf("\nCompression ratio: %ld/%ld (%d%%).\n",
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CodeCount, NumBytes, Percent);
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return;
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}
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CrntPlace = 0;
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CodeCount = 0;
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Print = TRUE;
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}
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Len = CodeBlock[0];
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for (i = 1; i <= Len; i++) {
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if (CrntPlace == 0) {
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if (Print) printf("\n%05lxh: ", CodeCount);
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CodeCount += 16;
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}
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#ifdef __MSDOS__
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if (kbhit() && ((c = getch()) == 'q' || c == 'Q')) Print = FALSE;
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#endif /* __MSDOS__ */
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if (Print) printf(" %02xh", CodeBlock[i]);
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if (++CrntPlace >= 16) CrntPlace = 0;
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}
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}
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/******************************************************************************
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* Print the given Extension - a string in pascal notation (size in first *
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* place). Save local information so printing can be performed continuously, *
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* or reset to start state if Reset. If Extension is NULL, output is flushed *
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******************************************************************************/
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static void PrintExtBlock(GifByteType *Extension, int Reset)
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{
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static int CrntPlace = 0, Print = TRUE;
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static long ExtCount = 0;
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static char HexForm[49], AsciiForm[17];
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char c;
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int i, Len;
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if (Reset || Extension == NULL) {
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if (Extension == NULL) {
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if (CrntPlace > 0) {
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HexForm[CrntPlace * 3] = 0;
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AsciiForm[CrntPlace] = 0;
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if (Print) printf("\n%05lx: %-49s %-17s\n",
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ExtCount, HexForm, AsciiForm);
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return;
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}
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else if (Print)
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printf("\n");
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}
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CrntPlace = 0;
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ExtCount = 0;
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Print = TRUE;
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}
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if (!Print) return;
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Len = Extension[0];
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for (i = 1; i <= Len; i++) {
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sprintf(&HexForm[CrntPlace * 3], " %02x", Extension[i]);
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sprintf(&AsciiForm[CrntPlace], "%c", MAKE_PRINTABLE(Extension[i]));
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#ifdef __MSDOS__
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if (kbhit() && ((c = getch()) == 'q' || c == 'Q')) Print = FALSE;
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#endif /* __MSDOS__ */
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if (++CrntPlace == 16) {
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HexForm[CrntPlace * 3] = 0;
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AsciiForm[CrntPlace] = 0;
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if (Print) printf("\n%05lx: %-49s %-17s",
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ExtCount, HexForm, AsciiForm);
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ExtCount += 16;
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CrntPlace = 0;
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}
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}
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}
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/******************************************************************************
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* Print the given PixelBlock of length Len. *
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* Save local information so printing can be performed continuously, *
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* or reset to start state if Reset. If PixelBlock is NULL, output is flushed *
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******************************************************************************/
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static void PrintPixelBlock(GifByteType *PixelBlock, int Len, int Reset)
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{
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static int CrntPlace = 0, Print = TRUE;
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static long ExtCount = 0;
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static char HexForm[49], AsciiForm[17];
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char c;
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int i;
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if (Reset || PixelBlock == NULL) {
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if (PixelBlock == NULL) {
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if (CrntPlace > 0) {
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HexForm[CrntPlace * 3] = 0;
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AsciiForm[CrntPlace] = 0;
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if (Print) printf("\n%05lx: %-49s %-17s\n",
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ExtCount, HexForm, AsciiForm);
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}
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else if (Print)
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printf("\n");
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}
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CrntPlace = 0;
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ExtCount = 0;
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Print = TRUE;
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if (PixelBlock == NULL) return;
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}
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if (!Print) return;
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for (i = 0; i < Len; i++) {
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sprintf(&HexForm[CrntPlace * 3], " %02x", PixelBlock[i]);
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sprintf(&AsciiForm[CrntPlace], "%c", MAKE_PRINTABLE(PixelBlock[i]));
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#ifdef __MSDOS__
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if (kbhit() && ((c = getch()) == 'q' || c == 'Q')) Print = FALSE;
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#endif /* __MSDOS__ */
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if (++CrntPlace == 16) {
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HexForm[CrntPlace * 3] = 0;
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AsciiForm[CrntPlace] = 0;
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if (Print) printf("\n%05lx: %-49s %-17s",
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ExtCount, HexForm, AsciiForm);
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ExtCount += 16;
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CrntPlace = 0;
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}
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}
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}
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/******************************************************************************
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* Print the image as LZ codes (each 12bits), until EOF marker is reached. *
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******************************************************************************/
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static void PrintLZCodes(GifFileType *GifFile)
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{
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char c;
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int Code, Print = TRUE, CrntPlace = 0;
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long CodeCount = 0;
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do {
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if (Print && CrntPlace == 0) printf("\n%05lx:", CodeCount);
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if (DGifGetLZCodes(GifFile, &Code) == GIF_ERROR) {
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PrintGifError();
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exit(-1);
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}
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if (Print && Code >= 0)
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printf(" %03x", Code); /* EOF Code is returned as -1. */
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CodeCount++;
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if (++CrntPlace >= 16) CrntPlace = 0;
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#ifdef __MSDOS__
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if (kbhit() && ((c = getch()) == 'q' || c == 'Q')) Print = FALSE;
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#endif /* __MSDOS__ */
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}
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while (Code >= 0);
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}
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Reference in New Issue
Block a user