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Source.v0.15
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support.m
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1995-06-12
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#include "support.h"
#include <stdio.h>
#define ENCODE(c) ((c) ? ((c) & 077) + ' ': '`')
int uuencode(const char *name, const char *inFileName, FILE *fpOut, short mode)
{
char buf[80];
int i, n;
FILE *fpIn;
fpIn = fopen(inFileName, "r");
if(!fpIn)
return 0;
fprintf(fpOut, "begin %o %s\n", mode, name);
while(1)
{
n = fread(buf, 1, 45, fpIn);
putc(ENCODE(n), fpOut);
for (i=0; i<n; i += 3)
{
fputc(ENCODE(buf[i] >> 2), fpOut);
fputc(ENCODE(((buf[i] << 4) & 060) | ((buf[i + 1] >> 4) & 017)), fpOut);
fputc(ENCODE(((buf[i + 1] << 2) & 074) | ((buf[i + 2] >> 6) & 03)), fpOut);
fputc(ENCODE(buf[i + 2] & 077), fpOut);
}
putc('\n', fpOut);
if (n <= 0)
break;
}
fputs("end\n", fpOut);
fclose(fpIn);
fflush(fpOut);
return 1;
}
/*
* to64 -- a filter from ascii to base64 encoding, from the
* metamail distribution.
*/
/*
Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)
Permission to use, copy, modify, and distribute this material
for any purpose and without fee is hereby granted, provided
that the above copyright notice and this permission notice
appear in all copies, and that the name of Bellcore not be
used in advertising or publicity pertaining to this
material without the specific, prior written permission
of an authorized representative of Bellcore. BELLCORE
MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY
OF THIS MATERIAL FOR ANY PURPOSE. IT IS PROVIDED "AS IS",
WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/
static char basis_64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
void output64chunk(int c1, int c2, int c3, int pads, FILE *outfile)
{
(void) putc(basis_64[c1>>2], outfile);
(void) putc(basis_64[((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4)], outfile);
if (pads == 2) {
(void) putc('=', outfile);
(void) putc('=', outfile);
} else if (pads) {
(void) putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
(void) putc('=', outfile);
} else {
(void) putc(basis_64[((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6)], outfile);
(void) putc(basis_64[c3 & 0x3F], outfile);
}
}
void to64(FILE *infile, FILE *outfile)
{
int c1, c2, c3, ct=0;
while ((c1 = getc(infile)) != EOF) {
c2 = getc(infile);
if (c2 == EOF) {
output64chunk(c1, 0, 0, 2, outfile);
} else {
c3 = getc(infile);
if (c3 == EOF) {
output64chunk(c1, c2, 0, 1, outfile);
} else {
output64chunk(c1, c2, c3, 0, outfile);
}
}
ct += 4;
if (ct > 71) {
(void) putc('\n', outfile);
ct = 0;
}
}
if (ct) (void) putc('\n', outfile);
(void) fflush(outfile);
}
/* End of Bellcore material. */
int base64(const char *inFileName, FILE *fp)
{
FILE *fpIn;
fpIn = fopen(inFileName, "r");
if(!fpIn)
return 0;
to64(fpIn, fp);
fclose(fpIn);
return 1;
}