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/*
* FARSI/ARABIC SHAPING PREPROCESSOR FOR NEATROFF
*
* Copyright (C) 2010-2014 Ali Gholami Rudi <ali at rudi dot ir>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "uc.h"
#include "util.h"
static void shape(int *s)
{
int *c = NULL, *n = NULL;
int cold = 0, cnew;
while (*s) {
if (s == n)
s++;
while (uc_comb(*s))
s++;
c = n;
n = s;
if (!c || !UC_R2L(*c)) {
cold = 0;
continue;
}
cnew = uc_shape(*c, cold, n ? *n : 0);
cold = *c;
*c = cnew;
}
}
static void shape_ligs(int *d, int *s)
{
int l;
while (*s) {
if ((l = uc_lig(d, s)))
s += l;
else
*d = *s++;
d++;
}
*d = 0;
}
#define MAXLEN (1 << 23)
static char raw[MAXLEN];
static int utf8[MAXLEN];
static int ligs[MAXLEN];
int main(int argc, char *argv[])
{
xread(0, raw, sizeof(raw));
utf8_dec(utf8, raw);
shape(utf8);
shape_ligs(ligs, utf8);
utf8_enc(raw, ligs);
xwrite(1, raw, strlen(raw));
return 0;
}
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