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/*
* (c) Copyright 1990, Kim Fabricius Storm. All rights reserved.
* Copyright (c) 1996-2005 Michael T Pins. All rights reserved.
*
* Pack subject by eliminating RE prefixes and - (nf) suffixes.
* Also collapse multiple blanks into single blanks.
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "config.h"
#include "global.h"
int
pack_subject(register char *dest, register char *src, int *re_counter_ptr, int max_length)
{
register char *max_dest;
int re = 0;
char *start_dest = dest;
if (src) {
max_dest = dest + max_length;
while (*src) {
if (isspace(*src)) {
src++;
continue;
}
/* count and remove 'Re: Re: ...' */
if (*src != 'R' && *src != 'r')
break;
*dest++ = *src++;
if (*src != 'e' && *src != 'E')
break;
*dest++ = *src++;
if (*src == ':' || *src == ' ') {
src++;
dest = start_dest;
re++;
continue;
}
if (*src != '^')
break;
src++;
dest = start_dest;
while (isdigit(*src))
*dest++ = *src++;
if (dest == start_dest)
re++;
else {
*dest = NUL;
dest = start_dest;
re += atoi(dest);
}
if (*src == ':')
src++;
}
while (*src && dest < max_dest) {
if (*src == '-' && strncmp("- (nf)", src, 5) == 0)
break;
if (isascii(*src) && isspace(*src)) {
do
src++;
while (isascii(*src) && isspace(*src));
*dest++ = SP;
} else
*dest++ = *src++;
}
}
*dest = NUL;
*re_counter_ptr = (char) re;
return dest - start_dest;
}
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