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GEMini_Atari_CD-ROM_Walnut_Creek_December_1993.iso
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uucosr10
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encode.c
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C/C++ Source or Header
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1991-05-31
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3KB
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182 lines
/*
* This was modified heavily for GEM from DUMAS UUE.C
*/
#include <stdio.h>
#include <ctype.h>
/* ENC is the basic 1 character encoding function to make a char printing */
#define ENC(c) (((c) & 077) + ' ')
extern FILE *fopen();
FILE *fp, *outp;
char ofname[80];
int lenofname;
int stdo = 0;
#define READ "rb"
int part = 'a', chap = 'a';
#define SEQMAX 'z'
#define SEQMIN 'a'
char seqc = SEQMAX;
int split = 0; fileln = 32*1024;
char lnbuf[128];
encode(filename)
char *filename;
{
char *p;
char *fname;
if ((fp=fopen(filename, READ))==NULL)
{
sprintf(lnbuf,"[1][Unable to open|%s][ABORT]",filename);
form_alert(1,lnbuf);
return;
}
disp_process(filename);
p = filename+strlen(filename);
while (--p > filename)
{
if ((*(p-1) == '\\')||(*(p-1) == ':'))
break;
}
/* p now points to the root filename, no path */
strcpy(ofname, p);
fname = ofname;
do
{
if (*fname == '.')
*fname = '\0';
} while (*fname++);
/* 8 char prefix + .uue -> 12 chars MAX */
lenofname = strlen(ofname);
if (lenofname > 8) ofname[8] = '\0';
strcat(ofname,".uue");
lenofname = strlen(ofname);
makename();
if((outp = fopen(ofname, "w")) == NULL)
{
sprintf(lnbuf,"[1][Unable to open|%s][ABORT]",ofname);
form_alert(1,lnbuf);
fclose(fp);
return;
}
maketable();
fprintf(outp,"begin %o %s\n", 0644, p);
uuencode();
fprintf(outp,"end\n");
fclose(outp);
return;
}
/* create ASCII table so a mailer can screw it up and the decode
* program can restore the error.
*/
maketable()
{
register int i, j;
fputs("table\n", outp);
for(i = ' ', j = 0; i < '`' ; j++) {
if (j == 32)
putc('\n', outp);
fputc(i++, outp);
}
putc('\n', outp);
}
/*
* Generate the names needed for single and multiple part encoding.
*/
makename()
{
if (split) {
ofname[lenofname - 1] = part;
ofname[lenofname - 2] = chap;
}
}
/*
* copy from in to out, encoding as you go along.
*/
uuencode()
{
char buf[80];
register int i, n;
register int lines;
lines = 6;
for (;;) {
n = fr(buf, 45);
putc(ENC(n), outp);
for (i = 0; i < n; i += 3)
outdec(&buf[i]);
putc(seqc, outp);
seqc--;
if (seqc < SEQMIN) seqc = SEQMAX;
putc('\n', outp);
++lines;
if (split && (lines > fileln)) {
part++;
if (part > 'z') {
part = 'a';
if (chap == 'z')
chap = 'a'; /* loop ... */
else
chap++;
}
makename();
fprintf(outp,"include %s\n",ofname);
fclose(outp);
if((outp = fopen(ofname, "w")) == NULL)
{
sprintf(lnbuf,"[1][Unable to open|%s][ABORT]",
ofname);
form_alert(1,lnbuf);
return;
}
maketable();
fprintf(outp,"begin part %c %s\n",part,ofname);
lines = 6;
}
if (n <= 0)
break;
}
}
/*
* output one group of 3 bytes, pointed at by p, on file f.
*/
outdec(p)
register char *p;
{
register int c1, c2, c3, c4;
c1 = *p >> 2;
c2 = (*p << 4) & 060 | (p[1] >> 4) & 017;
c3 = (p[1] << 2) & 074 | (p[2] >> 6) & 03;
c4 = p[2] & 077;
putc(ENC(c1), outp);
putc(ENC(c2), outp);
putc(ENC(c3), outp);
putc(ENC(c4), outp);
}
/* fr: like read but stdio */
int fr(buf, cnt)
register char *buf;
register int cnt;
{
register int c, i;
for (i = 0; i < cnt; i++) {
c = fgetc(fp);
if (feof(fp))
return(i);
buf[i] = c;
}
return (cnt);
}