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