home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
kermit.columbia.edu
/
kermit.columbia.edu.tar
/
kermit.columbia.edu
/
old
/
ckermit70
/
ckipct.c
< prev
next >
Wrap
C/C++ Source or Header
|
2000-01-01
|
5KB
|
181 lines
/*
* MSBPCT.C
*
* Howie Kaye -- Columbia University 3/11/86
*
* sibling program to MSBMKB.C. It is used to unpack BOO files, used for
* encoding binary files into text, and back. This program does the decoding.
* It is meant to replace the program "MSBPCT.BAS", and runs approximately
* 200 times faster.
*
* For documentation on BOO file format, see MSBMKB.C, or MS-Kermit manual.
* This program runs, as is, under Microsoft C on MSDOS, and under UNIX(4.2).
*
* Modification history:
*
* 1/1/88, Frank da Cruz. Remove default input file names -- too
* confusing. Add exit(0) for good return code upon success.
*
* 3/23/86 - Davide P. Cervone -- University of Rochester
* added AMIGA and VAX11C support
*
* 3/24/86 - Martin Knoblauch -- TH-Darmstadt (MK001)
* test if 1. line of inputfile is delimited by "\r\n" instead of "\n"
*
* 5/5/86 - John Matthews, U of Delaware.
* Explicitly close the files.
*
* 5/8/86 - L. John Junod, DTNSRDC.
* Adapt for Computer Innovations MS-DOS CI-86 Compiler
* Improve too many args error message
*/
#define MSDOS
#define CI86
#include <stdio.h>
#ifdef AMIGA
#include <fcntl.h>
#else
#ifdef MSDOS
#ifndef CI86
#include <fcntl.h>
#endif
#else
#ifdef vax11c
#include <file.h>
#else
#include <sys/file.h>
#endif
#endif
#endif
#define fixchr(x) ((x) -'0')
#define NULLCHR fixchr('~')
yes_or_no_p(arg) char *arg; {
int c,x;
while (1) {
printf("%s",arg);
c = getchar();
if (c == '\n') continue;
while ((x = getchar()) != '\n')
if (x == EOF) return(0);
if ((c == 'Y') || (c == 'y')) return(1);
if ((c == 'N') || (c == 'n') || (c == EOF)) return(0);
printf("Please answer 'Y' or 'N'\n");
}
}
main(argc,argv) char **argv; {
char *infile = ""; /* input file name, with default */
char outfile[100]; /* output file name */
FILE *ifp, *ofp; /* i/o files */
char inline[100],outline[200];
int f;
if (argc > 2) { /* check for too many args */
printf("Too many args. Usage: msbpct input-boo-file-name\n");
exit(1);
}
if (argc > 1) { /* check for input file */
infile = argv[1];
} else if (argc < 2) {
printf("Usage: msbpct input-boo-file-name\n");
exit(1);
}
if ((ifp = fopen(infile,"r")) == NULL) { /* open input file */
printf("%s not found.\n",infile); /* failure? */
exit(1);
}
fgets(outfile,100,ifp); /* get output file name */
if ((outfile[strlen(outfile)-2] == '\r')| /* MK001 */
(outfile[strlen(outfile)-2] == '\n')) {
outfile[strlen(outfile)-2] = '\0';
}
else {
outfile[strlen(outfile)-1] = '\0';
}
if ((ofp = fopen(outfile,"r")) != NULL) {
char msg[100];
sprintf(msg,"output file '%s' already exists. continue (y/n)? ",outfile);
if (!yes_or_no_p(msg)) {
printf("ok. bye\n");
exit(0);
}
else {
fclose(ofp);
}
}
#ifndef MSDOS
#ifndef O_BINARY
#define O_BINARY 0
#endif
#endif
#ifdef AMIGA
if ((ofp = fopen(outfile,"w")) == NULL) {
printf("could not open %s\n",outfile); /* failure */
exit(0);
}
#else
#ifdef CI86
if((ofp = fopen(outfile,"wb")) == NULL){
printf("could not open %s\n",outfile); /* failure */
exit(0);
}
#else
f = open(outfile,O_CREAT|O_WRONLY|O_TRUNC|O_BINARY,0x1ff);
if ((ofp = fdopen(f,"w")) == NULL) { /* open it */
printf("could not open %s\n",outfile); /* failure? */
exit(1);
}
#endif
#endif
printf("%s ==> %s\n",infile,outfile); /* announce our intentions */
while(fgets(inline,100,ifp) != NULL) { /* till EOF */
int index=0,outindex=0;
while (index < strlen(inline) && inline[index] != '\n' &&
inline[index] != '\r') /* end of line? */
if (fixchr(inline[index]) == NULLCHR) { /* null compress char... */
int rptcnt;
int i;
index++;
rptcnt = fixchr(inline[index]); /* get repeat count */
for (i=0; i<rptcnt; i++) /* output the nulls */
putc('\0',ofp);
index++; /* pass the count field */
}
else { /* a quad to decode... */
int a, b, c ,d;
a = fixchr(inline[index]);
index++;
b = fixchr(inline[index]);
index++;
c = fixchr(inline[index]);
index++;
d = fixchr(inline[index]);
index++;
/* output the bytes */
putc(((a*4)+(b/16)) & 255,ofp);
putc(((b*16)+(c/4)) & 255,ofp);
putc(((c*64)+d) & 255,ofp);
}
}
#ifdef MSDOS
putc('\032',ofp); /* final ^Z */
#endif
fclose(ofp); /* Close the files */
fclose(ifp);
exit(0);
} /* End of program */