/*****************************************************************************
*
* $Id$
* Purpose ...............: Characterset Compiler
* Author ................: Martin Junius, for Fidogate
*
*****************************************************************************
* Copyright (C) 1997-2004
*
* Michiel Broek FIDO: 2:280/2802
* Beekmansbos 10
* 1971 BV IJmuiden
* the Netherlands
*
* This file is part of MBSE BBS.
*
* This BBS 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 2, or (at your option) any
* later version.
*
* MBSE BBS 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 MBSE BBS; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*****************************************************************************/
/*****************************************************************************
* FIDOGATE --- Gateway UNIX Mail/News <-> FTN NetMail/EchoMail
*
* Charset mapping table compiler
*
*****************************************************************************
* Copyright (C) 1990-2002
* _____ _____
* | |___ | Martin Junius <mj@fidogate.org>
* | | | | | | Radiumstr. 18
* |_|_|_|@home| D-51069 Koeln, Germany
*
* This file is part of FIDOGATE.
*
* FIDOGATE 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 2, or (at your option) any
* later version.
*
* FIDOGATE 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 FIDOGATE; see the file COPYING. If not, write to the Free
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*****************************************************************************/
#include "../config.h"
#include "mbselib.h"
#include "mbcharsetc.h"
char *str_copy(char *, size_t, char *);
#define strieq(a,b) (strcasecmp ((a),(b)) == 0)
#define PROGRAM "mbcharsetc"
#define BUFFERSIZE (32*1024) /* Global buffer */
#define BUF_COPY(d,s) str_copy (d,sizeof(d),s)
char buffer[BUFFERSIZE];
/*
* Prototypes
*/
int charset_parse_c (char *);
int charset_do_file (char *);
int compile_map (char *, char *);
void usage (void);
/*
* Check for hex digits, signed char-safe version of isxdigit()
*/
int is_xdigit(int c)
{
/*
* Some <ctype.h> implementation only accept a parameter value range
* of [-1,255]. This may lead to problems, because we're quite often
* passing *p's to is_digit() with a char *p variable. The default
* char type is signed in most C implementation.
*/
return isxdigit((c & 0xff));
}
/*
* Check for octal digits
*/
int is_odigit(int c)
{
return c>='0' && c<'8';
}
/*
* isspace() replacement, checking for SPACE, TAB, CR, LF
*/
int is_space(int c)
{
return c==' ' || c=='\t' || c=='\r' || c=='\n';
}
/*
* Read line from config file. Strip `\n', leading spaces,
* comments (starting with `#'), and empty lines. cf_getline() returns
* a pointer to the first non-whitespace in buffer.
*/
static long cf_lineno = 0;
long cf_lineno_get(void)
{
return cf_lineno;
}
long cf_lineno_set(long n)
{
long old;
old = cf_lineno;
cf_lineno = n;
return old;
}
char *cf_getline(char *cbuffer, int len, FILE *fp)
{
char *p;
while (fgets(cbuffer, len, fp)) {
cf_lineno++;
Striplf(cbuffer);
for(p = cbuffer; *p && is_space(*p); p++) ; /* Skip white spaces */
if (*p != '#')
return p;
}
return NULL;
}
/*
* Parse character
*/
int charset_parse_c(char *s)
{
int val, n;
if(s[0] == '\\') { /* Special: \NNN or \xNN */
s++;
val = 0;
n = 0;
if(s[0]=='x' || s[0]=='X') { /* Hex */
s++;
while (is_xdigit(s[0]) && n<2) {
s[0] = toupper(s[0]);
val = val * 16 + s[0] - (s[0]>'9' ? 'A'-10 : '0');
s++;
n++;
}
if(*s)
return ERROR;
} else { /* Octal */
while(is_odigit(s[0]) && n<3) {
val = val * 8 + s[0] - '0';
s++;
n++;
}
if(*s)
return ERROR;
}
} else {
if(s[1] == 0) /* Single char */
val = s[0] & 0xff;
else
return ERROR;
}
return val & 0xff;
}
/*
* Process one line from charset.map file
*/
int charset_do_line(char *line)
{
static CharsetTable *pt = NULL;
char *key, *w1, *w2;
CharsetAlias *pa;
int i, c1, c2;
key = strtok(line, " \t");
if(!key)
return TRUE;
if (strieq(key, "include")) {
w1 = strtok(NULL, " \t");
if (charset_do_file(w1) == FALSE)
return FALSE;
}
/* Define alias */
else if (strieq(key, "alias")) {
w1 = strtok(NULL, " \t");
w2 = strtok(NULL, " \t");
if(!w1 || !w2) {
fprintf(stderr, "%s:%ld: argument(s) for alias missing\n", PROGRAM, cf_lineno_get());
return FALSE;
}
pa = charset_alias_new();
BUF_COPY(pa->alias, w1);
BUF_COPY(pa->name, w2);
}
/* Define table */
else if (strieq(key, "table")) {
w1 = strtok(NULL, " \t");
w2 = strtok(NULL, " \t");
if(!w1 || !w2) {
fprintf(stderr, "%s:%ld: argument(s) for table missing\n", PROGRAM, cf_lineno_get());
return FALSE;
}
pt = charset_table_new();
BUF_COPY(pt->in, w1);
BUF_COPY(pt->out, w2);
}
/* Define mapping for character(s) in table */
else if (strieq(key, "map")) {
w1 = strtok(NULL, " \t");
if (!w1) {
fprintf(stderr, "%s:%ld: argument for map missing\n", PROGRAM, cf_lineno_get());
return FALSE;
}
/* 1:1 mapping */
if (strieq(w1, "1:1")) {
for(i=0; i<MAX_CHARSET_IN; i++) {
if(pt->map[i][0] == 0) {
pt->map[i][0] = 0x80 + i;
pt->map[i][1] = 0;
}
}
}
/* 1:1 mapping, but not for 0x80...0x9f */
if(strieq(w1, "1:1-noctrl")) {
for(i=0x20; i<MAX_CHARSET_IN; i++) {
if(pt->map[i][0] == 0) {
pt->map[i][0] = 0x80 + i;
pt->map[i][1] = 0;
}
}
}
/* Mapping for undefined characters */
else if(strieq(w1, "default")) {
/**FIXME: not yet implemented**/
}
/* Normal mapping */
else {
if ((c1 = charset_parse_c(w1)) == ERROR) {
fprintf(stderr, "%s:%ld: illegal char %s\n", PROGRAM, cf_lineno_get(), w1);
return FALSE;
}
if (c1 < 0x80) {
fprintf(stderr, "%s:%ld: illegal char %s, must be >= 0x80\n", PROGRAM, cf_lineno_get(), w1);
return FALSE;
}
for (i=0; i<MAX_CHARSET_OUT-1 && (w2 = strtok(NULL, " \t")); i++ ) {
if( (c2 = charset_parse_c(w2)) == ERROR) {
fprintf(stderr, "%s:%ld: illegal char definition %s\n", PROGRAM, cf_lineno_get(), w2);
return FALSE;
}
pt->map[c1 & 0x7f][i] = c2;
}
for (; i<MAX_CHARSET_OUT; i++)
pt->map[c1 & 0x7f][i] = 0;
}
}
/* Error */
else {
fprintf(stderr, "%s:%ld: illegal key word %s\n", PROGRAM, cf_lineno_get(), key);
return FALSE;
}
return TRUE;
}
/*
* Process charset.map file
*/
int charset_do_file(char *name)
{
FILE *fp;
char *p;
long oldn;
if(!name)
return FALSE;
oldn = cf_lineno_set(0);
fp = fopen(name, "r");
if(!fp)
return FALSE;
while ((p = cf_getline(buffer, BUFFERSIZE, fp)))
charset_do_line(p);
fclose(fp);
cf_lineno_set(oldn);
return TRUE;
}
/*
* Compile charset.map
*/
int compile_map(char *in, char *out)
{
/* Read charset.map and compile */
if(charset_do_file(in) == FALSE) {
fprintf(stderr, "%s: compiling map file %s failed", PROGRAM, in);
return MBERR_GENERAL;
}
/* Write binary output file */
if (charset_write_bin(out) == ERROR) {
fprintf(stderr, "%s: writing binary map file %s failed", PROGRAM, out);
return MBERR_GENERAL;
}
return MBERR_OK;
}
void usage(void)
{
fprintf(stderr, "\n%s: MBSE BBS %s Character Map Compiler\n", PROGRAM, VERSION);
fprintf(stderr, " %s\n\n", COPYRIGHT);
fprintf(stderr, "usage: %s charset.map charset.bin\n\n", PROGRAM);
exit(MBERR_OK);
}
int main(int argc, char **argv)
{
int ret = MBERR_OK;
char *name_in, *name_out;
if (argc != 3)
usage();
name_in = argv[1];
name_out = argv[2];
ret = compile_map(name_in, name_out);
exit(ret);
}