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LBM2PBM.C
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1992-11-21
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4KB
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156 lines
#include <stdio.h>
#include <alloc.h>
#include <mem.h>
#include <stdlib.h>
#include <string.h>
#include <dir.h>
#include <dos.h>
#include "xbmtools.h"
#define TITLE "LBM2PBM - Linear to Planar bitmap conversion utility T. Gouthas 20/11/92\n"
#define SRC_EXT ".LBM"
#define DEST_EXT ".PBM"
int convert(char *filenamein, char *filenameout);
void syntax();
typedef struct _lbm_struc {
unsigned char width;
unsigned char height;
unsigned char data[];
} far *LBM_PTR;
#define BUFF_LEN 100
size_t farfread(void far *destptr,size_t size, size_t n, FILE *fp){
unsigned len;
unsigned char buff[BUFF_LEN];
len=size*n;
while(len >=BUFF_LEN){
fread(buff,BUFF_LEN,1,fp);
movedata((unsigned)_DS,(unsigned)buff,FP_SEG(destptr),FP_OFF(destptr),BUFF_LEN);
len-=BUFF_LEN;
(char far *)destptr+=BUFF_LEN;
}
if (len>0){
fread(buff,len,1,fp);
movedata((unsigned)_DS,(unsigned)buff,FP_SEG(destptr),FP_OFF(destptr),len);
}
};
size_t farfwrite(void far *srcptr,size_t size, size_t n, FILE *fp){
unsigned len;
unsigned char buff[BUFF_LEN];
len=size*n;
while(len >=BUFF_LEN){
movedata(FP_SEG(srcptr),FP_OFF(srcptr),(unsigned)_DS,(unsigned)buff,BUFF_LEN);
fwrite(buff,BUFF_LEN,1,fp);
len-=BUFF_LEN;
(char far *)srcptr+=BUFF_LEN;
}
if (len>0){
movedata(FP_SEG(srcptr),FP_OFF(srcptr),(unsigned)_DS,(unsigned)buff,len);
fwrite(buff,len,1,fp);
}
};
int convert(char *filenamein, char *filenameout){
static char far *ibuff=NULL, far *obuff=NULL;
static unsigned isize=0, osize=0;
unsigned width,height;
LBM_PTR lbm_ptr;
FILE *fi, *fo;
char far * farchptr;
unsigned infilesize,outfilesize;
fi=fopen(filenamein,"rb+");
if(!fi) return 0;
fseek(fi,0,SEEK_END);
infilesize = (unsigned) ftell(fi);
fseek(fi,0,SEEK_SET);
if (ibuff==NULL){
ibuff=farmalloc(infilesize);
if (ibuff==NULL) goto error;
isize=infilesize;
} else {
farchptr=farrealloc(ibuff,infilesize);
if (farchptr==NULL) goto error;
ibuff=farchptr;
isize=infilesize;
}
farfread(ibuff,infilesize,1,fi);
if ferror(fi) goto error;
lbm_ptr=(LBM_PTR) ibuff;
outfilesize=((lbm_ptr->width|3)^3)*lbm_ptr->height+2;
if (obuff==NULL){
obuff=farmalloc(infilesize);
if (obuff==NULL) goto error;
osize=outfilesize;
} else {
farchptr=farrealloc(obuff,outfilesize);
if (farchptr==NULL) goto error;
obuff=farchptr;
osize=outfilesize;
}
if(x_bm_to_pbm(ibuff,obuff)) return 0;
fo=fopen(filenameout,"wb+");
if (!fo) {
fclose(fi);
return 0;
}
farfwrite(obuff,1,osize,fo);
if ferror(fo) goto error;
fclose(fi);
fclose(fo);
return 1;
error:
fclose(fi);
fclose(fo);
return 0;
}
void syntax(){
printf("\n LBM2PBM <filespec> [ <filespec> ..] \n\n");
exit(0);
}
void main(int argc, char *argv[]){
int i;
char *dotptr;
char *tempptr;
char drive[MAXDRIVE];
char dir[MAXDIR];
char name[MAXFILE];
char ext[MAXEXT];
char filenameraw[100];
char filenamewild[100];
char filenamein[100];
char filenameout[100];
struct ffblk ffb;
printf(TITLE);
if (argc<2) syntax();
for (i=1;i<argc;i++){
strupr(argv[i]);
strcpy(filenamewild,argv[i]);
printf("\nConverting files matching \"%s\".\n",argv[i]);
fnsplit(filenamewild,drive,dir,NULL,ext);
if (*ext=='\0') strcat(filenamewild,SRC_EXT);
if(findfirst(filenamewild,&ffb,0)){
printf("No files found.\n");
exit(1);
}
do {
fnsplit(ffb.ff_name,NULL,NULL,name,ext);
if (strcmp(ext,SRC_EXT)){
printf("Skipping : %12s -> incorrect type.\n",ffb.ff_name);
} else {
fnmerge(filenamein,drive,dir,name,ext);
fnmerge(filenameout,drive,dir,name,DEST_EXT);
printf("Converting: %12s -> %12s ",filenamein,filenameout);
if (convert(filenamein,filenameout)) printf("OK\n");
else printf("FAILED\n");
}
} while(!findnext(&ffb));
}
}