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/* Copyright (C) 2018 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
static void put(wchar_t ch) {
switch (ch) {
break; case L'&': printf("&");
break; case L'<': printf("<");
break; case L'>': printf(">");
break; default: printf("%lc", ch);
}
}
static void tag(const char *open) {
static const char *close = NULL;
if (close == open) return;
if (close) printf("</%s>", close);
if (open) printf("<%s>", open);
close = open;
}
static void push(wchar_t ch) {
static wchar_t q[3];
if (q[1] == L'\b' && q[0] == L'_') {
tag("i");
put(q[2]);
q[0] = q[1] = q[2] = 0;
} else if (q[1] == L'\b' && q[0] == q[2]) {
tag("b");
put(q[2]);
q[0] = q[1] = q[2] = 0;
} else if (q[0]) {
tag(NULL);
put(q[0]);
}
q[0] = q[1];
q[1] = q[2];
q[2] = ch;
}
int main(void) {
setlocale(LC_CTYPE, "");
printf("<pre>");
wint_t ch;
while (WEOF != (ch = getwchar())) push(ch);
push(0); push(0); push(0);
printf("</pre>\n");
return EXIT_SUCCESS;
}
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