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/* $Id: encodeQ.c,v 1.2 1998/02/28 19:03:02 lindberg Exp $*/
/* $Name: ezmlm-idx-0313 $*/
#include "errtxt.h"
#include "mime.h"
#include "stralloc.h"
#include "strerr.h"
static void die_nomem(fatal)
char *fatal;
{
strerr_die2x(111,fatal,ERR_NOMEM);
}
static char *hexchar = "0123456789ABCDEF";
void encodeQ(indata,n,outdata,fatal)
char *indata;
unsigned int n;
stralloc *outdata;
char *fatal;
/* converts any character with the high order bit set to */
/* quoted printable. In: n chars of indata, out: stralloc outdata*/
{
register char *cpout;
register char ch;
unsigned int i;
char *cpin;
cpin = indata;
i = 0;
/* max 3 outchars per inchar & 2 char newline per 72 chars */
if (!stralloc_copys(outdata,"")) die_nomem(fatal);
if (!stralloc_ready(outdata,n * 3 + n/36)) die_nomem(fatal); /* worst case */
cpout = outdata->s;
while (n--) {
ch = *cpin++;
if (ch != ' ' && ch != '\n' && ch != '\t' &&
(ch > 126 || ch < 33 || ch == 61)) {
*(cpout++) = '=';
*(cpout++) = hexchar[(ch >> 4) & 0xf];
*(cpout++) = hexchar[ch & 0xf];
i += 3;
} else {
if (ch == '\n')
i = 0;
*(cpout++) = ch;
}
if (i >= 72) {
*(cpout++) = '=';
*(cpout++) = '\n';
i = 0;
}
}
outdata->len = (unsigned int) (cpout - outdata->s);
}
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