liang.cc

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/*
 * File: liang.cc
 *
 * Copyright 2012-2016 Sebastian Geerken <sgeerken@dillo.org>
 * Copyright 2012-2013 Johannes Hofmann <Johannes.Hofmann@gmx.de>
 * Copyright 2023 Rodrigo Arias Mallo <rodarima@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
/* Tests the hyphenation of words in different languages with the Liang
 * algorithm. The hyphenator requires the .pat pattern files which can
 * be downloaded from CTAN. */
 
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
 
#include "dw/fltkcore.hh"
#include "dw/hyphenator.hh"
 
dw::fltk::FltkPlatform *platform;
 
void hyph(dw::Hyphenator *h, const char *word, const char *parts)
{
        int p = 0;
        char buf[1024];
        int numBreaks;
        int *breakPos = h->hyphenateWord(platform, word, &numBreaks);
        memset(buf, 0, 1024);
        for (int i = 0; i < numBreaks + 1; i++) {
                int start = (i == 0 ? 0 : breakPos[i - 1]);
                int end = (i == numBreaks ? strlen (word) : breakPos[i]);
                if (i != 0)
                        buf[p++] = '-';
                for (int j = start; j < end; j++)
                        buf[p++] = word[j];
        }
 
        if (strcmp(parts, buf) != 0) {
                fprintf(stderr, "mismatch input=%s output=%s expected=%s\n",
                                word, buf, parts);
                exit(1);
        }
 
        printf("%s\n", buf);
 
        if (breakPos)
                free(breakPos);
}
 
dw::Hyphenator get_hyphenator(const char *path)
{
        if (access(path, F_OK) != 0) {
                fprintf(stderr, "cannot access %s file: %s", path,
                                strerror(errno));
                exit(1);
        }
 
        return dw::Hyphenator(path, "", 512);
}
 
void hyph_en_us()
{
        dw::Hyphenator h = get_hyphenator(CUR_SRC_DIR "/hyph-en-us.pat");
 
        hyph(&h, "supercalifragilisticexpialidocious", "su-per-cal-ifrag-ilis-tic-ex-pi-ali-do-cious");
        hyph(&h, "incredible", "in-cred-i-ble");
        hyph(&h, "hyphenation", "hy-phen-ation");
        hyph(&h, "...", "...");
}
 
void hyph_de()
{
        dw::Hyphenator h = get_hyphenator(CUR_SRC_DIR "/hyph-de.pat");
 
        hyph(&h, "...", "...");
        hyph(&h, "weiß", "weiß");
        hyph(&h, "Ackermann", "Acker-mann");
        hyph(&h, "Grundstücksverkehrsgenehmigungszuständigkeits",
                        "Grund-stücks-ver-kehrs-ge-neh-mi-gungs-zu-stän-dig-keits");
        hyph(&h, "Donaudampfschifffahrtskapitänsmützenknopf",
                        "Do-nau-dampf-schiff-fahrts-ka-pi-täns-müt-zen-knopf");
        hyph(&h, "www.dillo.org", "www.dil-lo.org");
}
 
int main(void)
{
        platform = new dw::fltk::FltkPlatform();
 
        hyph_en_us();
        hyph_de();
 
   return 0;
}