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Using Fidogate code to do charset translation

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This commit is contained in:
Michiel Broek
2004-02-28 19:49:54 +00:00
parent d296b1fb8a
commit 7a7b810aec
13 changed files with 3259 additions and 137 deletions
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21
lib/Makefile
View File

@@ -33,17 +33,22 @@ MBINET_HDRS = mbinet.h
DIESEL_SRCS = diesel.c mbdiesel.c
DIESEL_HDRS = diesel.h
DIESEL_OBJS = diesel.o mbdiesel.o
CHC_SRCS = mbcharsetc.c
CHC_HDRS = mbcharsetc.h
CHC_OBJS = mbcharsetc.o
OTHER_HDRS = bluewave.h mbse.h users.h
SRCS = ${COMMON_SRCS} ${DBASE_SRCS} ${MSGBASE_SRCS} ${MBINET_SRCS} \
${DIESEL_SRCS} ${NODELIST_SRCS}
${DIESEL_SRCS} ${NODELIST_SRCS} ${CHC_SRCS}
OBJS = ${COMMON_OBJS} ${DBASE_OBJS} ${MSGBASE_OBJS} ${MBINET_OBJS} \
${DIESEL_OBJS} ${NODELIST_OBJS}
${DIESEL_OBJS} ${NODELIST_OBJS} ${CHC_OBJS}
HDRS = ${COMMON_HDRS} ${DBASE_HDRS} ${MSGBASE_HDRS} ${MBINET_HDRS} \
${DIESEL_HDRS} ${NODELIST_HDRS} ${OTHER_HDRS}
${DIESEL_HDRS} ${NODELIST_HDRS} ${CHC_HDRS} ${OTHER_HDRS}
MAPS = charset.map russian.map
OTHER = Makefile README ftscprod.008 mkprod.awk \
README.diesel README.macro Diesel.doc nodelist.conf
TARGET = libmbse.a libdbase.a libmsgbase.a libmbinet.a libdiesel.a \
libnodelist.a
libnodelist.a mbcharsetc charset.bin
LIBS += ../lib/libmbse.a
#############################################################################
@@ -79,8 +84,16 @@ libnodelist.a: ${NODELIST_OBJS}
ar r $@ $?
${RANLIB} $@
mbcharsetc: ${CHC_OBJS} ${LIBS}
${CC} -o mbcharsetc ${CHC_OBJS} ${LDFLAGS} ${LIBS}
charset.bin: mbcharsetc ${MAPS}
./mbcharsetc charset.map charset.bin
install: all
${INSTALL} -c -o ${OWNER} -g ${GROUP} -m 0444 nodelist.conf ${ETCDIR}
${INSTALL} -c -s -g ${GROUP} -o ${OWNER} -m 0751 mbcharsetc ${BINDIR}
${INSTALL} -c -o ${OWNER} -g ${GROUP} -m 0444 charset.bin ${ETCDIR}
clean:
rm -f ${TARGET} *.o *.h~ *.c~ ftscprod.c core filelist Makefile.bak

382
lib/charset.c
View File

@@ -32,6 +32,84 @@
#include "mbselib.h"
#define strieq(a,b) (strcasecmp ((a),(b)) == 0)
#define BUF_APPEND(d,s) str_append(d,sizeof(d),s)
/*
* Alias linked list
*/
static CharsetAlias *charset_alias_list = NULL;
static CharsetAlias *charset_alias_last = NULL;
/*
* Table linked list
*/
static CharsetTable *charset_table_list = NULL;
static CharsetTable *charset_table_last = NULL;
/*
* Current charset mapping table
*/
static CharsetTable *charset_table_used = NULL;
/*
* str_printf(): wrapper for sprintf()/snprintf()
*/
int str_printf(char *buf, size_t len, const char *fmt, ...)
{
va_list args;
int n;
va_start(args, fmt);
#ifdef HAS_SNPRINTF
n = vsnprintf(buf, len, fmt, args);
/**FIXME: check for n==-1 and errno**/
#else
n = vsprintf(buf, fmt, args);
if(n >= len) {
WriteError("Internal error - str_printf() buf overflow");
/**NOT REACHED**/
return FALSE;
}
#endif
/* Make sure that buf[] is terminated with a \0. vsnprintf()
* should do this automatically as required by the ANSI C99
* proposal, but one never knows ... see also discussion on
* BugTraq */
buf[len - 1] = 0;
va_end(args);
return n;
}
char *str_append(char *d, size_t n, char *s)
{
int max = n - strlen(d) - 1;
strncat(d, s, max);
d[n-1] = 0;
return d;
}
char *str_copy(char *d, size_t n, char *s)
{
strncpy(d, s, n);
d[n-1] = 0;
return d;
}
#define BUF_COPY(d,s) str_copy (d,sizeof(d),s)
char *getchrs(int val)
{
switch (val) {
@@ -67,34 +145,288 @@ char *getchrsdesc(int val)
char *get_iconv_name(char *name)
/*
* Alloc new CharsetTable and put into linked list
*/
CharsetTable *charset_table_new(void)
{
if (!strncasecmp(name, "CP437", 5))
return (char *)"IBM437";
if (!strncasecmp(name, "CP850", 5))
return (char *)"IBM850";
if (!strncasecmp(name, "CP865", 5))
return (char *)"IBM865";
if (!strncasecmp(name, "CP866", 5))
return (char *)"IBM866";
if (!strncasecmp(name, "LATIN-1", 7))
return (char *)"ISO_8859-1";
if (!strncasecmp(name, "LATIN-2", 7))
return (char *)"ISO_8859-2";
if (!strncasecmp(name, "LATIN-5", 7))
return (char *)"ISO_8859-5";
if (!strncasecmp(name, "PC-8", 4))
return (char *)"IBM437";
if (!strncasecmp(name, "IBMPC", 5))
return (char *)"IBM437";
if (!strncasecmp(name, "+7_FIDO", 7))
return (char *)"IBM866";
if (!strncasecmp(name, "CP1125", 6))
return (char *)"CP1125";
CharsetTable *p;
Syslog('+', "get_iconv_name(%s): no usable character set name found", name);
return NULL;
/* Alloc and clear */
p = (CharsetTable *)xmalloc(sizeof(CharsetTable));
memset(p, 0, sizeof(CharsetTable));
p->next = NULL; /* Just to be sure */
/* Put into linked list */
if(charset_table_list)
charset_table_last->next = p;
else
charset_table_list = p;
charset_table_last = p;
return p;
}
/*
* Alloc new CharsetAlias and put into linked list
*/
CharsetAlias *charset_alias_new(void)
{
CharsetAlias *p;
/* Alloc and clear */
p = (CharsetAlias *)xmalloc(sizeof(CharsetAlias));
memset(p, 0, sizeof(CharsetAlias));
p->next = NULL; /* Just to be sure */
/* Put into linked list */
if(charset_alias_list)
charset_alias_last->next = p;
else
charset_alias_list = p;
charset_alias_last = p;
return p;
}
/*
* Write binary mapping file
*/
int charset_write_bin(char *name)
{
FILE *fp;
CharsetTable *pt;
CharsetAlias *pa;
// debug(14, "Writing charset.bin file %s", name);
fp = fopen(name, "w+");
if(!fp)
return FALSE;
/* Write aliases */
for (pa = charset_alias_list; pa; pa=pa->next) {
fputc(CHARSET_FILE_ALIAS, fp);
fwrite(pa, sizeof(CharsetAlias), 1, fp);
if(ferror(fp)) {
fclose(fp);
return FALSE;
}
}
/* Write tables */
for(pt = charset_table_list; pt; pt=pt->next) {
fputc(CHARSET_FILE_TABLE, fp);
fwrite(pt, sizeof(CharsetTable), 1, fp);
if(ferror(fp)) {
fclose(fp);
return FALSE;
}
}
fclose(fp);
return TRUE;
}
/*
* Read binary mapping file
*/
int charset_read_bin(void)
{
FILE *fp;
int c, n;
CharsetTable *pt;
CharsetAlias *pa;
char *name;
name = calloc(PATH_MAX, sizeof(char));
sprintf(name, "%s/etc/charset.bin", getenv("MBSE_ROOT"));
Syslog('s', "Reading %s", name);
if ((fp = fopen(name, "r")) == NULL) {
WriteError("$Can't open %s", name);
free(name);
return FALSE;
}
free(name);
while( (c = fgetc(fp)) != EOF ) {
switch(c) {
case CHARSET_FILE_ALIAS:
pa = charset_alias_new();
n = fread((void *)pa, sizeof(CharsetAlias), 1, fp);
pa->next = NULL; /* overwritten by fread() */
if(n != 1)
return FALSE;
Syslog('s', "read charset alias: %s -> %s", pa->alias, pa->name);
break;
case CHARSET_FILE_TABLE:
pt = charset_table_new();
n = fread((void *)pt, sizeof(CharsetTable), 1, fp);
pt->next = NULL; /* overwritten by fread() */
if(n != 1)
return FALSE;
Syslog('s', "read charset table: %s -> %s", pt->in, pt->out);
break;
default:
return FALSE;
break;
}
}
if(ferror(fp))
return FALSE;
fclose(fp);
return TRUE;
}
/*
* Convert to MIME quoted-printable =XX if qp==TRUE
*/
char *charset_qpen(int c, int qp)
{
static char buf[4];
c &= 0xff;
if( qp && (c == '=' || c >= 0x80) )
str_printf(buf, sizeof(buf), "=%02.2X", c & 0xff);
else
{
buf[0] = c;
buf[1] = 0;
}
return buf;
}
/*
* Map single character
*/
char *charset_map_c(int c, int qp)
{
static char buf[MAX_CHARSET_OUT * 4];
char *s;
c &= 0xff;
buf[0] = 0;
if(charset_table_used && c>=0x80)
{
s = charset_table_used->map[c - 0x80];
while(*s)
BUF_APPEND(buf, charset_qpen(*s++, qp));
}
else
{
BUF_COPY(buf, charset_qpen(c, qp));
}
return buf;
}
/*
* Search alias
*/
char *charset_alias_fsc(char *name)
{
CharsetAlias *pa;
/* Search for aliases */
for(pa = charset_alias_list; pa; pa=pa->next)
{
if(strieq(pa->name, name))
return pa->alias;
}
return name;
}
char *charset_alias_rfc(char *name)
{
CharsetAlias *pa;
/* Search for aliases */
for(pa = charset_alias_list; pa; pa=pa->next)
{
if(strieq(pa->alias, name))
return pa->name;
}
return name;
}
/*
* Set character mapping table
*/
int charset_set_in_out(char *in, char *out)
{
CharsetTable *pt;
CharsetAlias *pa;
int i;
if (!in || !out)
return FALSE;
/*
* Check if charset.bin is loaded.
*/
if ((charset_alias_list == NULL) || (charset_table_list == NULL))
charset_read_bin();
Syslog('s', "charset1: in=%s out=%s", in, out);
/*
* For charset names with a space (level number), shorten the name.
*/
for (i = 0; i < strlen(in); i++)
if (in[i] == ' ') {
in[i] = '\0';
break;
}
for (i = 0; i < strlen(out); i++)
if (out[i] == ' ') {
out[i] = '\0';
break;
}
Syslog('s', "charset2: in=%s out=%s", in, out);
/* Search for aliases */
for (pa = charset_alias_list; pa; pa=pa->next) {
if (strieq(pa->alias, in))
in = pa->name;
if (strieq(pa->alias, out))
out = pa->name;
}
Syslog('s', "charset3: in=%s out=%s", in, out);
/* Search for matching table */
for (pt = charset_table_list; pt; pt=pt->next) {
if(strieq(pt->in, in) && strieq(pt->out, out)) {
Syslog('s', "charset: table found in=%s out=%s", pt->in, pt->out);
charset_table_used = pt;
return TRUE;
}
}
Syslog('b', "charset: no table found in=%s out=%s", in, out);
charset_table_used = NULL;
return FALSE;
}

1321
lib/charset.map Normal file
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File diff suppressed because it is too large Load Diff

388
lib/mbcharsetc.c Normal file
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@@ -0,0 +1,388 @@
/*****************************************************************************
*
* $Id$
* 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);
}

7
lib/mbcharsetc.h Normal file
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@@ -0,0 +1,7 @@
#ifndef _MBCHARSET_H
#define _MBCHARSET_H
/* $Id$ */
#endif

87
lib/mbselib.h
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@@ -92,9 +92,6 @@
#endif
#include <pthread.h>
#include <sys/poll.h>
#ifdef HAVE_ICONV_H
#include <iconv.h>
#endif
#include <stddef.h>
#include <fcntl.h>
@@ -376,39 +373,6 @@ struct icmp_filter {
#define FTNC_MAXCHARS 8 /* Highest charset number */
/*
* Mapping:
*
* Kludge iconv name
* ---------- ---------------
* ASCII 1 ISO646-US
* DUTCH 1
* FINNISH 1 ISO646-FI
* FRENCH 1 ISO646-FR
* CANADIAN 1 ISO646-CA
* GERMAN 1
* ITALIAN 1 ISO646-IT
* NORWEIG 1 ISO646-NO
* PORTU 1 ISO646-PT
* SPANISH 1 ISO646-ES
* SWEDISH 1 ISO646-SE
* SWISS 1
* UK 1 ISO646-GB
* CP437 2 CP437
* CP850 2 CP850
* CP865 2 CP865
* CP866 2 CP766
* LATIN-1 2 ISO8859-1
* LATIN-2 2 ISO8859-2
* LATIN-5 2 ISO8859-5
* MAC 2 MAC
* PC-8 ISO646-US
* IBMPC 2 CP437
* UKR 2 CP866
* +7_FIDO CP866
*
*/
/*****************************************************************************
*
* Global typedefs.
@@ -2129,15 +2093,6 @@ int attach(faddr, char *, int, char);
/*
* From charset.c
*/
char *getchrs(int); /* Return characterset name */
char *getchrsdesc(int); /* Return characterset description */
char *get_iconv_name(char *); /* Return usable name for iconv */
/*
* From dostran.c
*/
@@ -2461,6 +2416,48 @@ int gpt_running(int); /* Is timer running */
int msleep(int); /* Milliseconds timer */
/************************************************************************
*
* Charset mapping
*/
#define MAX_CHARSET_NAME 16
#define MAX_CHARSET_IN 128
#define MAX_CHARSET_OUT 4
#define CHARSET_FILE_ALIAS 'A' /* Id for binary file */
#define CHARSET_FILE_TABLE 'T' /* Id for binary file */
typedef struct st_charset_alias {
char alias[MAX_CHARSET_NAME]; /* Alias charset name */
char name[MAX_CHARSET_NAME]; /* Real charset name */
struct st_charset_alias *next;
} CharsetAlias;
typedef struct st_charset_table {
char in[MAX_CHARSET_NAME]; /* Input charset name */
char out[MAX_CHARSET_NAME]; /* Output charset name */
char map[MAX_CHARSET_IN][MAX_CHARSET_OUT];
struct st_charset_table *next;
} CharsetTable;
char *getchrs(int); /* Return characterset name */
char *getchrsdesc(int); /* Return characterset description */
CharsetTable *charset_table_new(void); /* Add table to linked list */
CharsetAlias *charset_alias_new(void); /* Add alias to linked list */
int charset_write_bin(char *); /* Save charset.bin */
int charset_read_bin(void); /* Load ~/etc/charset.bin */
char *charset_qpen(int, int); /* Convert to MIME quoted-printable */
char *charset_map_c(int, int); /* map single character */
char *charset_alias_fsc(char *); /* Search FSC alias */
char *charset_alias_rfc(char *); /* Search RFC alias */
int charset_set_in_out(char *, char *); /* Setup mapping */
/************************************************************************
*
* Records data

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