blob: 19efbecf36ea4a3ee5c353cc89185752cdc55911 [file] [log] [blame]
/* gen-mirroring-tab.c - generate gmirroringtable.h for glib
* copied from FriBidi.
*
* $Id$
* $Author$
* $Date$
* $Revision$
* $Source$
*
* Author:
* Behdad Esfahbod, 2001, 2002, 2004
*
* Copyright (C) 2004 Sharif FarsiWeb, Inc
* Copyright (C) 2001,2002,2004 Behdad Esfahbod
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* For licensing issues, contact <license@farsiweb.info>.
*/
#include <glib.h>
#include <stdlib.h>
#include <stdio.h>
#include "packtab.h"
#define appname "gen-mirroring-tab"
#define outputname "gmirroringtable.h"
static void
die (
const char *msg
)
{
fprintf (stderr, appname ": %s\n", msg);
exit (1);
}
static void
die2 (
const char *fmt,
const char *p
)
{
fprintf (stderr, appname ": ");
fprintf (stderr, fmt, p);
fprintf (stderr, "\n");
exit (1);
}
static void
die4 (
const char *fmt,
unsigned long l,
unsigned long p,
unsigned long q
)
{
fprintf (stderr, appname ": ");
fprintf (stderr, fmt, l, p, q);
fprintf (stderr, "\n");
exit (1);
}
#define table_name "Mir"
#define macro_name "GLIB_GET_MIRRORING"
#define UNICODE_CHARS 0x110000
static signed int table[UNICODE_CHARS];
static char buf[4000];
static signed long max_dist;
static void
init (
void
)
{
max_dist = 0;
}
static void
clear_tab (
void
)
{
register gunichar c;
for (c = 0; c < UNICODE_CHARS; c++)
table[c] = 0;
}
static void
init_tab_mirroring_txt (
void
)
{
clear_tab ();
}
static void
read_bidi_mirroring_txt (
FILE *f
)
{
unsigned long l;
init_tab_mirroring_txt ();
l = 0;
while (fgets (buf, sizeof buf, f))
{
unsigned long i, j;
signed long dist;
int k;
const char *s = buf;
l++;
while (*s == ' ')
s++;
if (s[0] == '#' || s[0] == '\0' || s[0] == '\n')
continue;
k = sscanf (s, "%lx; %lx", &i, &j);
if (k != 2 || i >= UNICODE_CHARS || j >= UNICODE_CHARS)
die4 ("invalid pair in input at line %lu: %04lX, %04lX", l, i, j);
dist = ((signed long) j - (signed long) i);
table[i] = dist;
if (dist > max_dist)
max_dist = dist;
else if (-dist > max_dist)
max_dist = -dist;
}
}
static void
read_data (
const char *data_file_type,
const char *data_file_name
)
{
FILE *f;
fprintf (stderr, "Reading '%s'\n", data_file_name);
if (!(f = fopen (data_file_name, "rt")))
die2 ("error: cannot open '%s' for reading", data_file_name);
if (!strcmp (data_file_type, "BidiMirroring.txt"))
read_bidi_mirroring_txt (f);
else
die2 ("error: unknown data-file-type %s", data_file_type);
fclose (f);
}
static void
gen_mirroring_tab (
int max_depth,
const char *data_file_type
)
{
int key_bytes;
const char *key_type;
fprintf (stderr,
"Generating '" outputname "', it may take up to a few minutes\n");
printf ("/* " outputname "\n * generated by " appname " "
"\n" " * from the file %s of */\n\n", data_file_type);
printf ("#define PACKTAB_UINT8 guint8\n"
"#define PACKTAB_UINT16 guint16\n"
"#define PACKTAB_UINT32 guint32\n\n");
key_bytes = max_dist <= 0x7f ? 1 : max_dist < 0x7fff ? 2 : 4;
key_type = key_bytes == 1 ? "gint8" : key_bytes == 2 ?
"gint16" : "gint32";
if (!pack_table
(table, UNICODE_CHARS, key_bytes, 0, max_depth, 1, NULL,
key_type, table_name, macro_name "_DELTA", stdout))
die ("error: insufficient memory, decrease max_depth");
printf ("#undef PACKTAB_UINT8\n"
"#undef PACKTAB_UINT16\n" "#undef PACKTAB_UINT32\n\n");
printf ("#define " macro_name "(x) ((x) + " macro_name "_DELTA(x))\n\n");
printf ("/* End of generated " outputname " */\n");
}
int
main (
int argc,
const char **argv
)
{
const char *data_file_type = "BidiMirroring.txt";
if (argc < 3)
die2 ("usage:\n " appname " max-lookups /path/to/%s [junk...]",
data_file_type);
{
int max_depth = atoi (argv[1]);
const char *data_file_name = argv[2];
if (max_depth < 2)
die ("invalid depth");
init ();
read_data (data_file_type, data_file_name);
gen_mirroring_tab (max_depth, data_file_type);
}
return 0;
}