/** Network Kanji Filter. (PDS Version)
************************************************************************
** Copyright (C) 1987, Fujitsu LTD. (Itaru ICHIKAWA)
** $BO"Mm@h!'(B $B!J3t!KIY;NDL8&5f=j!!%=%U%H#38&!!;T@n!!;j(B
** $B!J(BE-Mail Address: ichikawa@flab.fujitsu.co.jp$B!K(B
** Copyright (C) 1996,1998
** $BO"Mm@h!'(B $BN05eBg3X>pJs9)3X2J(B $B2OLn(B $B??<#(B mine/X0208 support
** $B!J(BE-Mail Address: kono@ie.u-ryukyu.ac.jp$B!K(B
** $BO"Mm@h!'(B COW for DOS & Win16 & Win32 & OS/2
** $B!J(BE-Mail Address: GHG00637@niftyserve.or.p$B!K(B
** $B$3$N%=!<%9$N$$$+$J$kJ#<L!$2~JQ!$=$@5$b5vBz$7$^$9!#$?$@$7!"(B
** $B$=$N:]$K$O!"C/$,9W8%$7$?$r<($9$3$NItJ,$r;D$9$3$H!#(B
** $B:FG[I[$d;(;o$NIUO?$J$I$NLd$$9g$o$;$bI,MW$"$j$^$;$s!#(B
** $B$3$N%W%m%0%i%`$K$D$$$F$OFC$K2?$NJ]>Z$b$7$J$$!"0-$7$+$i$:!#(B
** Everyone is permitted to do anything on this program
** including copying, modifying, improving.
** as long as you don't try to pretend that you wrote it.
** i.e., the above copyright notice has to appear in all copies.
** You don't have to ask before copying or publishing.
** THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE.
***********************************************************************/
static char *CopyRight =
"Copyright (C) 1987, FUJITSU LTD. (I.Ichikawa),1998 S. Kono, COW";
static char *Version =
"1.7";
static char *Patchlevel =
"0/9711/Shinji Kono";
/*
**
**
**
** USAGE: nkf [flags] [file]
**
** Flags:
** b Output is bufferred (DEFAULT)
** u Output is unbufferred
**
** t no operation
**
** j Outout code is JIS 7 bit (DEFAULT SELECT)
** s Output code is MS Kanji (DEFAULT SELECT)
** e Output code is AT&T JIS (DEFAULT SELECT)
** l Output code is JIS 7bit and ISO8859-1 Latin-1
**
** m MIME conversion for ISO-2022-JP
** i_ Output sequence to designate JIS-kanji (DEFAULT_J)
** o_ Output sequence to designate single-byte roman characters (DEFAULT_R)
**
** r {de/en}crypt ROT13/47
**
** v display Version
**
** T Text mode output (for MS-DOS)
**
** x Do not convert X0201 kana into X0208
** Z Convert X0208 alphabet to ASCII
**
** f60 fold option
**
** m MIME decode
** B try to fix broken JIS, missing Escape
** B[1-9] broken level
**
** O Output to 'nkf.out' file
** d Delete \r in line feed
** c Add \r in line feed
**/
/******************************/
/* $B%G%U%)%k%H$N=PNO%3!<%IA*Br(B */
/* Select DEFAULT_CODE */
#define DEFAULT_CODE_JIS
/* #define DEFAULT_CODE_SJIS */
/* #define DEFAULT_CODE_EUC */
/******************************/
#if (defined(__TURBOC__) || defined(LSI_C)) && !defined(MSDOS)
#define MSDOS
#endif
#ifndef PERL_XS
#include <stdio.h>
#endif
#if defined(MSDOS) || defined(__OS2__)
#include <stdlib.h>
#include <fcntl.h>
#include <io.h>
#endif
#ifdef MSDOS
#ifdef LSI_C
#define setbinmode(fp) fsetbin(fp)
#else /* Microsoft C, Turbo C */
#define setbinmode(fp) setmode(fileno(fp), O_BINARY)
#endif
#else /* UNIX,OS/2 */
#define setbinmode(fp)
#endif
#ifdef _IOFBF /* SysV and MSDOS */
#define setvbuffer(fp, buf, size) setvbuf(fp, buf, _IOFBF, size)
#else /* BSD */
#define setvbuffer(fp, buf, size) setbuffer(fp, buf, size)
#endif
/*Borland C++ 4.5 EasyWin*/
#if defined(__TURBOC__) && defined(_Windows) && !defined(__WIN32__) /*Easy Win */
#define EASYWIN
#include <windows.h>
#endif
#define FALSE 0
#define TRUE 1
/* state of output_mode and input_mode */
#define ASCII 0
#define X0208 1
#define X0201 2
#define NO_X0201 3
#define JIS_INPUT 4
#define SJIS_INPUT 5
#define LATIN1_INPUT 6
#define FIXED_MIME 7
#define DOUBLE_SPACE -2
#define NL 0x0a
#define ESC 0x1b
#define SPACE 0x20
#define AT 0x40
#define SSP 0xa0
#define DEL 0x7f
#define SI 0x0f
#define SO 0x0e
#define SSO 0x8e
#define HOLD_SIZE 32
#define IOBUF_SIZE 16384
#define DEFAULT_J 'B'
#define DEFAULT_R 'B'
#define SJ0162 0x00e1 /* 01 - 62 ku offset */
#define SJ6394 0x0161 /* 63 - 94 ku offset */
/* MIME preprocessor */
#undef STRICT_MIME /* do stupid strict mime integrity check */
#define GETC(p) ((!mime_mode)?getc(p):mime_getc(p))
#define UNGETC(c,p) ((!mime_mode)?ungetc(c,p):mime_ungetc(c))
#ifdef EASYWIN /*Easy Win */
extern POINT _BufferSize;
#endif
/* function prototype */
#ifndef _
# ifdef __STDC__
# define _(args) args
# else
# define _(args) ()
# endif
#endif
#ifndef PERL_XS
static void noconvert _((FILE *f));
static int mime_integrity _((FILE *f,unsigned char *p));
static int usage _((void));
static char stdibuf[IOBUF_SIZE];
static char stdobuf[IOBUF_SIZE];
static unsigned int mime_input = 0; /* undecoded */
static int end_check;
#endif
static void kanji_convert _((FILE *f));
static void h_conv _((FILE *f,int c2,int c1));
static int push_hold_buf _((int c2,int c1));
static void s_iconv _((int c2,int c1));
static void e_oconv _((int c2,int c1));
static void s_oconv _((int c2,int c1));
static void j_oconv _((int c2,int c1));
static int line_fold _((int c2,int c1));
static int pre_convert _((int c1,int c2));
static int mime_begin _((FILE *f));
static int mime_getc _((FILE *f));
static int mime_ungetc _((unsigned int c));
static int base64decode _((int c));
static void arguments _((char *c));
static void reinit _((void));
/* buffers */
static unsigned char hold_buf[HOLD_SIZE*2];
static int hold_count;
/* MIME preprocessor fifo */
#define MIME_BUF_SIZE (1024) /* 2^n ring buffer */
#define MIME_BUF_MASK (MIME_BUF_SIZE-1)
#define Fifo(n) mime_buf[(n)&MIME_BUF_MASK]
static unsigned char mime_buf[MIME_BUF_SIZE];
static unsigned int mime_top = 0;
static unsigned int mime_last = 0; /* decoded */
/* flags */
static int unbuf_f = FALSE;
static int estab_f = FALSE;
static int nop_f = FALSE;
static int binmode_f = TRUE; /* binary mode */
static int rot_f = FALSE; /* rot14/43 mode */
static int input_f = FALSE; /* non fixed input code */
static int alpha_f = FALSE; /* convert JIx0208 alphbet to ASCII */
static int mime_f = TRUE; /* convert MIME B base64 or Q */
static int mimebuf_f = FALSE; /* MIME buffered input */
static int broken_f = FALSE; /* convert ESC-less broken JIS */
static int iso8859_f = FALSE; /* ISO8859 through */
#if defined(MSDOS) || defined(__OS2__)
static int x0201_f = TRUE; /* Assume JISX0201 kana */
#else
static int x0201_f = NO_X0201; /* Assume NO JISX0201 */
#endif
/* X0208 -> ASCII converter */
static int c1_return;
/* fold parameter */
static int line = 0; /* chars in line */
static int prev = 0;
static int fold_f = FALSE;
static int fold_len = 0;
/* options */
static char kanji_intro = DEFAULT_J,
ascii_intro = DEFAULT_R;
/* Folding */
int line_fold();
#define FOLD_MARGIN 10
#define DEFAULT_FOLD 60
/* converters */
#ifdef DEFAULT_CODE_JIS
# define DEFAULT_CONV j_oconv
#endif
#ifdef DEFAULT_CODE_SJIS
# define DEFAULT_CONV s_oconv
#endif
#ifdef DEFAULT_CODE_EUC
# define DEFAULT_CONV e_oconv
#endif
static void (*iconv) _((int c2,int c1));
/* s_iconv or oconv */
static void (*oconv) _((int c2,int c1)) = DEFAULT_CONV;
/* [ejs]_oconv */
/* Global states */
static int output_mode = ASCII, /* output kanji mode */
input_mode = ASCII, /* input kanji mode */
shift_mode = FALSE; /* TRUE shift out, or X0201 */
static int mime_mode = FALSE; /* MIME mode B base64, Q hex */
/* X0201 / X0208 conversion tables */
/* X0201 kana conversion table */
/* 90-9F A0-DF */
unsigned char cv[]= {
0x21,0x21,0x21,0x23,0x21,0x56,0x21,0x57,
0x21,0x22,0x21,0x26,0x25,0x72,0x25,0x21,
0x25,0x23,0x25,0x25,0x25,0x27,0x25,0x29,
0x25,0x63,0x25,0x65,0x25,0x67,0x25,0x43,
0x21,0x3c,0x25,0x22,0x25,0x24,0x25,0x26,
0x25,0x28,0x25,0x2a,0x25,0x2b,0x25,0x2d,
0x25,0x2f,0x25,0x31,0x25,0x33,0x25,0x35,
0x25,0x37,0x25,0x39,0x25,0x3b,0x25,0x3d,
0x25,0x3f,0x25,0x41,0x25,0x44,0x25,0x46,
0x25,0x48,0x25,0x4a,0x25,0x4b,0x25,0x4c,
0x25,0x4d,0x25,0x4e,0x25,0x4f,0x25,0x52,
0x25,0x55,0x25,0x58,0x25,0x5b,0x25,0x5e,
0x25,0x5f,0x25,0x60,0x25,0x61,0x25,0x62,
0x25,0x64,0x25,0x66,0x25,0x68,0x25,0x69,
0x25,0x6a,0x25,0x6b,0x25,0x6c,0x25,0x6d,
0x25,0x6f,0x25,0x73,0x21,0x2b,0x21,0x2c,
0x00,0x00};
/* X0201 kana conversion table for daguten */
/* 90-9F A0-DF */
unsigned char dv[]= {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x25,0x2c,0x25,0x2e,
0x25,0x30,0x25,0x32,0x25,0x34,0x25,0x36,
0x25,0x38,0x25,0x3a,0x25,0x3c,0x25,0x3e,
0x25,0x40,0x25,0x42,0x25,0x45,0x25,0x47,
0x25,0x49,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x25,0x50,0x25,0x53,
0x25,0x56,0x25,0x59,0x25,0x5c,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00};
/* X0201 kana conversion table for han-daguten */
/* 90-9F A0-DF */
unsigned char ev[]= {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x25,0x51,0x25,0x54,
0x25,0x57,0x25,0x5a,0x25,0x5d,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00};
/* X0208 kigou conversion table */
/* 0x8140 - 0x819e */
unsigned char fv[] = {
0x00,0x00,0x00,0x00,0x2c,0x2e,0x00,0x3a,
0x3b,0x3f,0x21,0x00,0x00,0x27,0x60,0x00,
0x5e,0x00,0x5f,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x2d,0x00,0x2f,
0x5c,0x00,0x00,0x7c,0x00,0x00,0x60,0x27,
0x22,0x22,0x28,0x29,0x00,0x00,0x5b,0x5d,
0x7b,0x7d,0x3c,0x3e,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x2b,0x2d,0x00,0x00,
0x00,0x3d,0x00,0x3c,0x3e,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x24,0x00,0x00,0x25,0x23,0x26,0x2a,0x40,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
} ;
static int file_out = FALSE;
static int add_cr = FALSE;
static int del_cr = FALSE;
#ifndef PERL_XS
int
main(argc, argv)
int argc;
char **argv;
{
FILE *fin;
char *cp;
#ifdef EASYWIN /*Easy Win */
_BufferSize.y = 400;/*Set Scroll Buffer Size*/
#endif
for (argc--,argv++; (argc > 0) && **argv == '-'; argc--, argv++) {
cp = *argv;
arguments(cp);
}
if(iso8859_f && (oconv != j_oconv || !x0201_f )) {
fprintf(stderr,"Mixed ISO8859/JISX0201/SJIS/EUC output is not allowed.\n");
exit(1);
}
if(binmode_f == TRUE)
#ifdef __OS2__
if(freopen("","wb",stdout) == NULL)
return (-1);
#else
setbinmode(stdout);
#endif
if(unbuf_f)
setbuf(stdout, (char *) NULL);
else
setvbuffer(stdout, stdobuf, IOBUF_SIZE);
if(argc == 0) {
if(binmode_f == TRUE)
#ifdef __OS2__
if(freopen("","rb",stdin) == NULL) return (-1);
#else
setbinmode(stdin);
#endif
setvbuffer(stdin, stdibuf, IOBUF_SIZE);
if(nop_f)
noconvert(stdin);
else
kanji_convert(stdin);
} else {
while (argc--) {
if((fin = fopen(*argv++, "r")) == NULL) {
perror(*--argv);
return(-1);
} else {
/* reopen file for stdout */
if(file_out == TRUE){
if(argc == 1 ) {
if(freopen(*argv++, "w", stdout) == NULL) {
perror(*--argv);
return (-1);
}
argc--;
} else {
if(freopen("nkf.out", "w", stdout) == NULL) {
perror(*--argv);
return (-1);
}
}
if(binmode_f == TRUE) {
#ifdef __OS2__
if(freopen("","wb",stdout) == NULL)
return (-1);
#else
setbinmode(stdout);
#endif
}
}
if(binmode_f == TRUE)
#ifdef __OS2__
if(freopen("","rb",fin) == NULL)
return (-1);
#else
setbinmode(fin);
#endif
setvbuffer(fin, stdibuf, IOBUF_SIZE);
if(nop_f)
noconvert(fin);
else
kanji_convert(fin);
fclose(fin);
}
}
}
#ifdef EASYWIN /*Easy Win */
if(file_out == FALSE)
scanf("%d",&end_check);
else
fclose(stdout);
#else /* for Other OS */
if(file_out == TRUE)
fclose(stdout);
#endif
return (0);
}
#endif
static void
arguments(cp)
char *cp;
{
while (*cp) {
switch (*cp++) {
case 'b': /* buffered mode */
unbuf_f = FALSE;
continue;
case 'u': /* non bufferd mode */
unbuf_f = TRUE;
continue;
case 't': /* transparent mode */
nop_f = TRUE;
continue;
case 'j': /* JIS output */
case 'n':
oconv = j_oconv;
continue;
case 'e': /* AT&T EUC output */
oconv = e_oconv;
continue;
case 's': /* SJIS output */
oconv = s_oconv;
continue;
case 'l': /* ISO8859 Latin-1 support, no conversion */
iso8859_f = TRUE; /* Only compatible with ISO-2022-JP */
input_f = LATIN1_INPUT;
continue;
case 'i': /* Kanji IN ESC-$-@/B */
if(*cp=='@'||*cp=='B')
kanji_intro = *cp++;
continue;
case 'o': /* ASCII IN ESC-(-J/B */
if(*cp=='J'||*cp=='B'||*cp=='H')
ascii_intro = *cp++;
continue;
case 'r':
rot_f = TRUE;
continue;
#if defined(MSDOS) || defined(__OS2__)
case 'T':
binmode_f = FALSE;
continue;
#endif
#ifndef PERL_XS
case 'v':
usage();
exit(1);
break;
#endif
/* Input code assumption */
case 'J': /* JIS input */
case 'E': /* AT&T EUC input */
input_f = JIS_INPUT;
continue;
case 'S': /* MS Kanji input */
input_f = SJIS_INPUT;
if(x0201_f==NO_X0201) x0201_f=TRUE;
continue;
case 'Z': /* Convert X0208 alphabet to asii */
/* bit:0 Convert X0208
bit:1 Convert Kankaku to one space
bit:2 Convert Kankaku to two spaces
*/
if('9'>= *cp && *cp>='0')
alpha_f |= 1<<(*cp++ -'0');
else
alpha_f |= TRUE;
continue;
case 'x': /* Convert X0201 kana to X0208 or X0201 Conversion */
x0201_f = FALSE; /* No X0201->X0208 conversion */
/* accept X0201
ESC-(-I in JIS, EUC, MS Kanji
SI/SO in JIS, EUC, MS Kanji
SSO in EUC, JIS, not in MS Kanji
MS Kanji (0xa0-0xdf)
output X0201
ESC-(-I in JIS (0x20-0x5f)
SSO in EUC (0xa0-0xdf)
0xa0-0xd in MS Kanji (0xa0-0xdf)
*/
continue;
case 'X': /* Assume X0201 kana */
/* Default value is NO_X0201 for EUC/MS-Kanji mix */
x0201_f = TRUE;
continue;
case 'f': /* folding -f60 or -f */
fold_f = TRUE;
fold_len = atoi(cp);
if(!(0<fold_len && fold_len<BUFSIZ))
fold_len = DEFAULT_FOLD;
while('0'<= *cp && *cp <='9') cp++;
continue;
case 'm': /* MIME support */
mime_f = TRUE;
if(*cp=='B'||*cp=='Q') {
mime_mode = *cp++;
mimebuf_f = FIXED_MIME;
} else if (*cp=='0') {
mime_f = FALSE;
}
continue;
case 'M': /* MIME output */
oconv = j_oconv; /* sorry... not yet done.. */
continue;
case 'B': /* Broken JIS support */
/* bit:0 no ESC JIS
bit:1 allow any x on ESC-(-x or ESC-$-x
bit:2 reset to ascii on NL
*/
if('9'>= *cp && *cp>='0')
broken_f |= 1<<(*cp++ -'0');
else
broken_f |= TRUE;
continue;
#ifndef PERL_XS
case 'O':/* for Output file */
file_out = TRUE;
continue;
#endif
case 'c':/* add cr code */
add_cr = TRUE;
continue;
case 'd':/* delete cr code */
del_cr = TRUE;
continue;
default:
/* bogus option but ignored */
continue;
}
}
}
#ifndef PERL_XS
static void
noconvert(f)
FILE *f;
{
int c;
while ((c = getc(f)) != EOF)
putchar(c);
}
#endif
static void
kanji_convert(f)
FILE *f;
{
int c1, c2;
c2 = 0;
if(input_f == JIS_INPUT || input_f == LATIN1_INPUT) {
estab_f = TRUE; iconv = oconv;
} else if(input_f == SJIS_INPUT) {
estab_f = TRUE; iconv = s_iconv;
} else {
estab_f = FALSE; iconv = oconv;
}
input_mode = ASCII;
output_mode = ASCII;
shift_mode = FALSE;
#define NEXT continue /* no output, get next */
#define SEND ; /* output c1 and c2, get next */
#define LAST break /* end of loop, go closing */
while ((c1 = GETC(f)) != EOF) {
if(c2) {
/* second byte */
if(c2 > DEL) {
/* in case of 8th bit is on */
if(!estab_f) {
/* in case of not established yet */
if(c1 > SSP) {
/* It is still ambiguious */
h_conv(f, c2, c1);
c2 = 0;
NEXT;
} else if(c1 < AT) {
/* ignore bogus code */
c2 = 0;
NEXT;
} else {
/* established */
/* it seems to be MS Kanji */
estab_f = TRUE;
iconv = s_iconv;
SEND;
}
} else
/* in case of already established */
if(c1 < AT) {
/* ignore bogus code */
c2 = 0;
NEXT;
} else
SEND;
} else
/* 7 bit code */
/* it might be kanji shitfted */
if((c1 == DEL) || (c1 <= SPACE)) {
/* ignore bogus first code */
c2 = 0;
NEXT;
} else
SEND;
} else {
/* first byte */
if(c1 > DEL) {
/* 8 bit code */
if(!estab_f && !iso8859_f) {
/* not established yet */
if(c1 < SSP) {
/* it seems to be MS Kanji */
estab_f = TRUE;
iconv = s_iconv;
} else if(c1 < 0xe0) {
/* it seems to be EUC */
estab_f = TRUE;
iconv = oconv;
} else {
/* still ambiguious */
}
c2 = c1;
NEXT;
} else { /* estab_f==TRUE */
if(iso8859_f) {
SEND;
} else if(SSP<=c1 && c1<0xe0 && iconv == s_iconv) {
/* SJIS X0201 Case... */
/* This is too arrogant, but ... */
if(x0201_f==NO_X0201) {
iconv = oconv;
c2 = c1;
NEXT;
} else
if(x0201_f) {
if(dv[(c1-SSP)*2]||ev[(c1-SSP)*2]) {
/* look ahead for X0201/X0208conversion */
if((c2 = GETC(f)) == EOF) {
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
LAST;
} else if(c2==(0xde)) { /* $BByE@(B */
(*oconv)(dv[(c1-SSP)*2],dv[(c1-SSP)*2+1]);
c2=0;
NEXT;
} else if(c2==(0xdf)&&ev[(c1-SSP)*2]) {
/* $BH>ByE@(B */
(*oconv)(ev[(c1-SSP)*2],ev[(c1-SSP)*2+1]);
c2=0;
NEXT;
}
UNGETC(c2,f); c2 = 0;
}
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
NEXT;
} else
SEND;
} else if(c1==SSO && iconv != s_iconv) {
/* EUC X0201 Case */
/* This is too arrogant
if(x0201_f == NO_X0201) {
estab_f = FALSE;
c2 = 0;
NEXT;
} */
c1 = GETC(f); /* skip SSO */
euc_1byte_check:
if(x0201_f && SSP<=c1 && c1<0xe0) {
if(dv[(c1-SSP)*2]||ev[(c1-SSP)*2]) {
if((c2 = GETC(f)) == EOF) {
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
LAST;
}
/* forward lookup $BByE@(B/$BH>ByE@(B */
if(c2 != SSO) {
UNGETC(c2,f); c2 = 0;
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
NEXT;
} else if((c2 = GETC(f)) == EOF) {
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
(*oconv)(0,SSO);
LAST;
} else if(c2==(0xde)) { /* $BByE@(B */
(*oconv)(dv[(c1-SSP)*2],dv[(c1-SSP)*2+1]);
c2=0;
NEXT;
} else if(c2==(0xdf)&&ev[(c1-SSP)*2]) {
/* $BH>ByE@(B */
(*oconv)(ev[(c1-SSP)*2],ev[(c1-SSP)*2+1]);
c2=0;
NEXT;
} else {
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
/* we have to check this c2 */
/* and no way to push back SSO */
c1 = c2; c2 = 0;
goto euc_1byte_check;
}
}
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
NEXT;
} else
SEND;
} else if(c1 < SSP && iconv != s_iconv) {
/* strange code in EUC */
iconv = s_iconv; /* try SJIS */
c2 = c1;
NEXT;
} else {
/* already established */
c2 = c1;
NEXT;
}
}
} else if((c1 > SPACE) && (c1 != DEL)) {
/* in case of Roman characters */
if(shift_mode) {
c1 |= 0x80;
/* output 1 shifted byte */
if(x0201_f && (!iso8859_f||input_mode==X0201) &&
SSP<=c1 && c1<0xe0 ) {
if(dv[(c1-SSP)*2]||ev[(c1-SSP)*2]) {
if((c2 = GETC(f)) == EOF) {
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
LAST;
} else if(c2==(0xde&0x7f)) { /* $BByE@(B */
(*oconv)(dv[(c1-SSP)*2],dv[(c1-SSP)*2+1]);
c2=0;
NEXT;
} else if(c2==(0xdf&0x7f)&&ev[(c1-SSP)*2]) {
/* $BH>ByE@(B */
(*oconv)(ev[(c1-SSP)*2],ev[(c1-SSP)*2+1]);
c2=0;
NEXT;
}
UNGETC(c2,f); c2 = 0;
}
(*oconv)(cv[(c1-SSP)*2],cv[(c1-SSP)*2+1]);
NEXT;
} else
SEND;
} else if(c1 == '(' && broken_f && input_mode == X0208
&& !mime_mode ) {
/* Try to recover missing escape */
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, '(');
LAST;
} else {
if(c1 == 'B' || c1 == 'J' || c1 == 'H') {
input_mode = ASCII; shift_mode = FALSE;
NEXT;
} else {
(*oconv)(0, '(');
/* do not modify various input_mode */
/* It can be vt100 sequence */
SEND;
}
}
} else if(input_mode == X0208) {
/* in case of Kanji shifted */
c2 = c1;
NEXT;
/* goto next_byte */
} else if(c1 == '=' && mime_f && !mime_mode ) {
if((c1 = getc(f)) == EOF) {
(*oconv)(0, '=');
LAST;
} else if(c1 == '?') {
/* =? is mime conversiooon start sequence */
if(mime_begin(f) == EOF) /* check in detail */
LAST;
else
NEXT;
} else {
(*oconv)(0, '=');
ungetc(c1,f);
NEXT;
}
} else if(c1 == '$' && broken_f && !mime_mode) {
/* try to recover missing escape */
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, '$');
LAST;
} else if(c1 == '@'|| c1 == 'B') {
/* in case of Kanji in ESC sequence */
input_mode = X0208;
shift_mode = FALSE;
NEXT;
} else {
/* sorry */
(*oconv)(0, '$');
(*oconv)(0, c1);
NEXT;
}
} else
SEND;
} else if(c1 == SI) {
shift_mode = FALSE;
NEXT;
} else if(c1 == SO) {
shift_mode = TRUE;
NEXT;
} else if(c1 == ESC) {
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, ESC);
LAST;
} else if(c1 == '$') {
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, ESC);
(*oconv)(0, '$');
LAST;
} else if(c1 == '@'|| c1 == 'B') {
/* This is kanji introduction */
input_mode = X0208;
shift_mode = FALSE;
NEXT;
} else if(c1 == '(') {
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, ESC);
(*oconv)(0, '$');
(*oconv)(0, '(');
LAST;
} else if(c1 == '@'|| c1 == 'B') {
/* This is kanji introduction */
input_mode = X0208;
shift_mode = FALSE;
NEXT;
} else {
(*oconv)(0, ESC);
(*oconv)(0, '$');
(*oconv)(0, '(');
(*oconv)(0, c1);
NEXT;
}
} else if(broken_f&0x2) {
input_mode = X0208;
shift_mode = FALSE;
NEXT;
} else {
(*oconv)(0, ESC);
(*oconv)(0, '$');
(*oconv)(0, c1);
NEXT;
}
} else if(c1 == '(') {
if((c1 = GETC(f)) == EOF) {
(*oconv)(0, ESC);
(*oconv)(0, '(');
LAST;
} else {
if(c1 == 'I') {
/* This is X0201 kana introduction */
input_mode = X0201; shift_mode = X0201;
NEXT;
} else if(c1 == 'B' || c1 == 'J' || c1 == 'H') {
/* This is X0208 kanji introduction */
input_mode = ASCII; shift_mode = FALSE;
NEXT;
} else if(broken_f&0x2) {
input_mode = ASCII; shift_mode = FALSE;
NEXT;
} else {
(*oconv)(0, ESC);
(*oconv)(0, '(');
/* maintain various input_mode here */
SEND;
}
}
} else {
/* lonely ESC */
(*oconv)(0, ESC);
SEND;
}
} else if(c1 == NL && broken_f&4) {
input_mode = ASCII;
SEND;
} else
SEND;
}
/* send: */
if(input_mode == X0208)
(*oconv)(c2, c1); /* this is JIS, not SJIS/EUC case */
else
(*iconv)(c2, c1); /* can be EUC/SJIS */
c2 = 0;
continue;
/* goto next_word */
}
/* epilogue */
(*iconv)(EOF, 0);
}
static void
h_conv(f, c2, c1)
FILE *f;
int c1, c2;
{
int wc;
/** it must NOT be in the kanji shifte sequence */
/** it must NOT be written in JIS7 */
/** and it must be after 2 byte 8bit code */
hold_count = 0;
push_hold_buf(c2, c1);
c2 = 0;
while ((c1 = GETC(f)) != EOF) {
if(c2) {
/* second byte */
if(!estab_f) {
/* not established */
if(c1 > SSP) {
/* it is still ambiguious yet */
SEND;
} else if(c1 < AT) {
/* ignore bogus first byte */
c2 = 0;
SEND;
} else {
/* now established */
/* it seems to be MS Kanji */
estab_f = TRUE;
iconv = s_iconv;
SEND;
}
} else
SEND;
} else {
/* First byte */
if(c1 > DEL) {
/* 8th bit is on */
if(c1 < SSP) {
/* it seems to be MS Kanji */
estab_f = TRUE;
iconv = s_iconv;
} else if(c1 < 0xe0) {
/* it seems to be EUC */
estab_f = TRUE;
iconv = oconv;
} else {
/* still ambiguious */
}
c2 = c1;
NEXT;
} else
/* 7 bit code , then send without any process */
SEND;
}
/* send: */
if((push_hold_buf(c2, c1) == EOF) || estab_f)
break;
c2 = 0;
continue;
}
/** now,
** 1) EOF is detected, or
** 2) Code is established, or
** 3) Buffer is FULL (but last word is pushed)
**
** in 1) and 3) cases, we continue to use
** Kanji codes by oconv and leave estab_f unchanged.
**/
for (wc = 0; wc < hold_count; wc += 2) {
c2 = hold_buf[wc];
c1 = hold_buf[wc+1];
(*iconv)(c2, c1);
}
return;
}
static int
push_hold_buf(c2, c1)
int c2, c1;
{
if(hold_count >= HOLD_SIZE*2)
return (EOF);
hold_buf[hold_count++] = c2;
hold_buf[hold_count++] = c1;
return ((hold_count >= HOLD_SIZE*2) ? EOF : hold_count);
}
static void
s_iconv(c2, c1)
int c2,
c1;
{
if((c2 == EOF) || (c2 == 0)) {
/* NOP */
} else {
c2 = c2 + c2 - ((c2 <= 0x9f) ? SJ0162 : SJ6394);
if(c1 < 0x9f)
c1 = c1 - ((c1 > DEL) ? SPACE : 0x1f);
else {
c1 = c1 - 0x7e;
c2++;
}
}
(*oconv)(c2, c1);
}
static void
e_oconv(c2, c1)
int c2, c1;
{
c2 = pre_convert(c1,c2); c1 = c1_return;
if(fold_f) {
switch(line_fold(c2,c1)) {
case '\n':
if(add_cr == TRUE) {
putchar('\r');
c1 = '\n';
}
putchar('\n');
break;
case 0: return;
case '\r':
c1 = '\n'; c2 = 0;
break;
case '\t':
case ' ':
c1 = ' '; c2 = 0;
break;
}
}
if(c2==DOUBLE_SPACE) {
putchar(' '); putchar(' ');
return;
}
if(c2 == EOF)
return;
else if(c2 == 0 && (c1&0x80)) {
putchar(SSO); putchar(c1);
} else if(c2 == 0) {
if(c1 == '\n' && add_cr == TRUE)
putchar('\r');
if(c1 != '\r')
putchar(c1);
else if(del_cr == FALSE)
putchar(c1);
} else {
if((c1<0x20 || 0x7e<c1) ||
(c2<0x20 || 0x7e<c2)) {
estab_f = FALSE;
return; /* too late to rescue this char */
}
putchar(c2 | 0x080);
putchar(c1 | 0x080);
}
return;
}
static void
s_oconv(c2, c1)
int c2, c1;
{
c2 = pre_convert(c1,c2); c1 = c1_return;
if(fold_f) {
switch(line_fold(c2,c1)) {
case '\n':
if(add_cr == TRUE) {
putchar('\r');
c1 = '\n';
}
putchar('\n');
break;
case '\r':
c1 = '\n'; c2 = 0;
break;
case 0: return;
case '\t':
case ' ':
c1 = ' '; c2 = 0;
break;
}
}
if(c2==DOUBLE_SPACE) {
putchar(' '); putchar(' ');
return;
}
if(c2 == EOF)
return;
else if(c2 == 0) {
if(c1 == '\n' && add_cr == TRUE)
putchar('\r');
if(c1 != '\r')
putchar(c1);
else if(del_cr == FALSE)
putchar(c1);
} else {
if((c1<0x20 || 0x7e<c1) ||
(c2<0x20 || 0x7e<c2)) {
estab_f = FALSE;
return; /* too late to rescue this char */
}
putchar((((c2 - 1) >> 1) + ((c2 <= 0x5e) ? 0x71 : 0xb1)));
putchar((c1 + ((c2 & 1) ? ((c1 < 0x60) ? 0x1f : 0x20) : 0x7e)));
}
return;
}
static void
j_oconv(c2, c1)
int c2, c1;
{
c2 = pre_convert(c1,c2); c1 = c1_return;
if(fold_f) {
switch(line_fold(c2,c1)) {
case '\n':
if(output_mode) {
putchar(ESC);
putchar('(');
putchar(ascii_intro);
}
if(add_cr == TRUE) {
putchar('\r');
c1 = '\n';
}
putchar('\n');
output_mode = ASCII;
break;
case '\r':
c1 = '\n'; c2 = 0;
break;
case '\t':
case ' ':
c1 = ' '; c2 = 0;
break;
case 0: return;
}
}
if(c2 == EOF) {
if(output_mode) {
putchar(ESC);
putchar('(');
putchar(ascii_intro);
}
} else if(c2 == 0 && (c1 & 0x80)) {
if(input_mode==X0201 || !iso8859_f) {
if(output_mode!=X0201) {
putchar(ESC);
putchar('(');
putchar('I');
output_mode = X0201;
}
c1 &= 0x7f;
} else {
/* iso8859 introduction, or 8th bit on */
/* Can we convert in 7bit form using ESC-'-'-A ?
Is this popular? */
}
putchar(c1);
} else if(c2 == 0) {
if(output_mode) {
putchar(ESC);
putchar('(');
putchar(ascii_intro);
output_mode = ASCII;
}
if(c1 == '\n' && add_cr == TRUE)
putchar('\r');
if(c1 != '\r')
putchar(c1);
else if(del_cr == FALSE)
putchar(c1);
} else if(c2 == DOUBLE_SPACE) {
if(output_mode) {
putchar(ESC);
putchar('(');
putchar(ascii_intro);
output_mode = ASCII;
}
putchar(' ');
if(c1 == '\n' && add_cr == TRUE)
putchar('\r');
if(c1 != '\r')
putchar(c1);
else if(del_cr == FALSE)
putchar(c1);
} else {
if(output_mode != X0208) {
putchar(ESC);
putchar('$');
putchar(kanji_intro);
output_mode = X0208;
}
if(c1<0x20 || 0x7e<c1)
return;
if(c2<0x20 || 0x7e<c2)
return;
putchar(c2);
if(c1 == '\n' && add_cr == TRUE)
putchar('\r');
if(c1 != '\r')
putchar(c1);
else if(del_cr == FALSE)
putchar(c1);
}
return;
}
#define rot13(c) ( \
( c < 'A' ) ? c: \
(c <= 'M') ? (c + 13): \
(c <= 'Z') ? (c - 13): \
(c < 'a') ? (c): \
(c <= 'm') ? (c + 13): \
(c <= 'z') ? (c - 13): \
(c) \
)
#define rot47(c) ( \
( c < '!' ) ? c: \
( c <= 'O' ) ? (c + 47) : \
( c <= '~' ) ? (c - 47) : \
c \
)
/*
Return value of line_fold()
\n add newline and output char
\r add newline and output nothing
' ' space
0 skip
1 (or else) normal output
fold state in prev (previous character)
>0x80 Japanese (X0208/X0201)
<0x80 ASCII
\n new line
' ' space
This fold algorthm does not preserve heading space in a line.
This is the main difference from fmt.
*/
static int
line_fold(c2,c1)
int c2,c1;
{
int prev0;
if(c1=='\r')
return 0; /* ignore cr */
if(c1== 8) {
if(line>0) line--;
return 1;
}
if(c2==EOF && line != 0) /* close open last line */
return '\n';
/* new line */
if(c1=='\n') {
if(prev == c1) { /* duplicate newline */
if(line) {
line = 0;
return '\n'; /* output two newline */
} else {
line = 0;
return 1;
}
} else {
if(prev&0x80) { /* Japanese? */
prev = c1;
return 0; /* ignore given single newline */
} else if(prev==' ') {
return 0;
} else {
prev = c1;
if(++line<=fold_len)
return ' ';
else {
line = 0;
return '\r'; /* fold and output nothing */
}
}
}
}
if(c1=='\f') {
prev = '\n';
if(line==0)
return 1;
line = 0;
return '\n'; /* output newline and clear */
}
/* X0208 kankaku or ascii space */
if( (c2==0&&c1==' ')||
(c2==0&&c1=='\t')||
(c2==DOUBLE_SPACE)||
(c2=='!'&& c1=='!')) {
if(prev == ' ') {
return 0; /* remove duplicate spaces */
}
prev = ' ';
if(++line<=fold_len)
return ' '; /* output ASCII space only */
else {
prev = ' '; line = 0;
return '\r'; /* fold and output nothing */
}
}
prev0 = prev; /* we still need this one... , but almost done */
prev = c1;
if(c2 || (SSP<=c1 && c1<=0xdf))
prev |= 0x80; /* this is Japanese */
line += (c2==0)?1:2;
if(line<=fold_len) { /* normal case */
return 1;
}
if(line>=fold_len+FOLD_MARGIN) { /* too many kinsou suspension */
line = (c2==0)?1:2;
return '\n'; /* We can't wait, do fold now */
}
/* simple kinsoku rules return 1 means no folding */
if(c2==0) {
if(c1==0xde) return 1; /* $B!+(B*/
if(c1==0xdf) return 1; /* $B!,(B*/
if(c1==0xa4) return 1; /* $B!#(B*/
if(c1==0xa3) return 1; /* $B!$(B*/
if(c1==0xa1) return 1; /* $B!W(B*/
if(c1==0xb0) return 1; /* - */
if(SSP<=c1 && c1<=0xdf) { /* X0201 */
line = 1;
return '\n';/* add one new line before this character */
}
/* fold point in ASCII { [ ( */
if(( c1!=')'&&
c1!=']'&&
c1!='}'&&
c1!='.'&&
c1!=','&&
c1!='!'&&
c1!='?'&&
c1!='/'&&
c1!=':'&&
c1!=';')&&
((prev0=='\n')|| (prev0==' ')|| /* ignored new line */
(prev0&0x80)) /* X0208 - ASCII */
) {
line = 1;
return '\n';/* add one new line before this character */
}
return 1; /* default no fold in ASCII */
} else {
if(c2=='!') {
if(c1=='"') return 1; /* $B!"(B */
if(c1=='#') return 1; /* $B!#(B */
if(c1=='$') return 1; /* $B!$(B */
if(c1=='%') return 1; /* $B!%(B */
if(c1=='\'') return 1; /* $B!\(B */
if(c1=='(') return 1; /* $B!((B */
if(c1==')') return 1; /* $B!)(B */
if(c1=='*') return 1; /* $B!*(B */
if(c1=='+') return 1; /* $B!+(B */
if(c1==',') return 1; /* $B!,(B */
}
line = 2;
return '\n'; /* add one new line before this character */
}
}
static int
pre_convert(c1,c2)
int c1,c2;
{
if(c2) c1 &= 0x7f;
c1_return = c1;
if(c2==EOF) return c2;
c2 &= 0x7f;
if(rot_f) {
if(c2) {
c1 = rot47(c1);
c2 = rot47(c2);
} else {
if(!(c1 & 0x80))
c1 = rot13(c1);
}
c1_return = c1;
}
/* JISX0208 Alphabet */
if(alpha_f && c2 == 0x23 ) return 0;
/* JISX0208 Kigou */
if(alpha_f && c2 == 0x21 ) {
if(0x21==c1) {
if(alpha_f&0x2) {
c1_return = ' ';
return 0;
} else if(alpha_f&0x4) {
c1_return = ' ';
return DOUBLE_SPACE;
} else {
return c2;
}
} else if(0x20<c1 && c1<0x7f && fv[c1-0x20]) {
c1_return = fv[c1-0x20];
return 0;
}
}
return c2;
}
#ifdef STRICT_MIME
/* This converts */
unsigned char *mime_pattern[] = {
(unsigned char *)"\075?ISO-8859-1?Q?",
(unsigned char *)"\075?ISO-2022-JP?B?",
(unsigned char *)"\075?ISO-2022-JP?Q?",
(unsigned char *)"\075?JAPANESE_EUC?B?",
(unsigned char *)"\075?SHIFT_JIS?B?",
NULL
};
int mime_encode[] = {
'Q', 'B', 'Q',
0
};
#endif
#define MAXRECOVER 20
int iso8859_f_save;
#ifdef STRICT_MIME
#define nkf_toupper(c) (('a'<=c && c<='z')?(c-('a'-'A')):c)
/* I don't trust portablity of toupper */
static int
mime_begin(f)
FILE *f;
{
int c1;
int i,j,k;
unsigned char *p,*q;
int r[MAXRECOVER]; /* recovery buffer, max mime pattern lenght */
mime_mode = FALSE;
/* =? has been checked */
j = 0;
p = mime_pattern[j];
r[0]='='; r[1]='?';
for(i=2;p[i]>' ';i++) { /* start at =? */
if( ((((r[i] = c1 = getc(f))==EOF) || nkf_toupper(c1) != p[i] ) {
/* pattern fails, try next one */
q = p;
while (p = mime_pattern[++j]) {
for(k=2;k<i;k++) /* assume length(p) > i */
if(p[k]!=q[k]) break;
if(k==i && nkf_toupper(c1)==p[k]) break;
}
if(p) continue; /* found next one, continue */
/* all fails, output from recovery buffer */
ungetc(c1,f);
for(j=0;j<i;j++) {
(*oconv)(0,r[j]);
}
return c1;
}
}
mime_mode = mime_encode[j];
iso8859_f_save = iso8859_f;
if(j==0) {
iso8859_f = TRUE;
}
if(mime_mode=='B') {
mimebuf_f = unbuf_f;
if(!unbuf_f) {
/* do MIME integrity check */
return mime_integrity(f,mime_pattern[j]);
}
}
mimebuf_f = TRUE;
return c1;
}
#define mime_getc0(f) (mimebuf_f?getc(f):Fifo(mime_input++))
#define mime_ungetc0(c,f) (mimebuf_f?ungetc(c,f):mime_input--)
#else
static int
mime_begin(f)
FILE *f;
{
int c1;
int i,j;
int r[MAXRECOVER]; /* recovery buffer, max mime pattern lenght */
mime_mode = FALSE;
/* =? has been checked */
j = 0;
r[0]='='; r[1]='?';
for(i=2;i<MAXRECOVER;i++) { /* start at =? */
/* We accept any charcter type even if it is breaked by new lines */
if( (r[i] = c1 = getc(f))==EOF) break;
if(c1=='=') break;
if(c1<' '&& c1!='\r' && c1!='\n') break;
if(c1=='?') {
i++;
if(!(i<MAXRECOVER) || (r[i] = c1 = getc(f))==EOF) break;
if(c1=='b'||c1=='B') {
mime_mode = 'B';
} else if(c1=='q'||c1=='Q') {
mime_mode = 'Q';
} else {
break;
}
i++;
if(!(i<MAXRECOVER) || (r[i] = c1 = getc(f))==EOF) break;
if(c1=='?') {
break;
} else {
mime_mode = FALSE;
}
break;
}
}
if(!mime_mode || c1==EOF || i==MAXRECOVER) {
ungetc(c1,f);
if (i == MAXRECOVER)
i--;
for(j=0;j<i;j++) {
(*oconv)(0,r[j]);
}
return c1;
}
iso8859_f_save = iso8859_f;
/* do no MIME integrity check */
return c1; /* used only for checking EOF */
}
#define mime_getc0(f) getc(f)
#define mime_ungetc0(c,f) ungetc(c,f)
#endif
static int
mime_getc(f)
FILE *f;
{
int c1, c2, c3, c4, cc;
int t1, t2, t3, t4, mode, exit_mode;
if(mime_top != mime_last) { /* Something is in FIFO */
return Fifo(mime_top++);
}
if(mimebuf_f == FIXED_MIME)
exit_mode = mime_mode;
else
exit_mode = FALSE;
if(mime_mode == 'Q') {
if((c1 = mime_getc0(f)) == EOF) return (EOF);
if(c1=='_') return ' ';
if(c1!='=' && c1!='?')
return c1;
mime_mode = exit_mode; /* prepare for quit */
if(c1<=' ') return c1;
if((c2 = mime_getc0(f)) == EOF) return (EOF);
if(c2<=' ') return c2;
if(c1=='?'&&c2=='=') {
/* end Q encoding */
input_mode = exit_mode;
iso8859_f = iso8859_f_save;
return getc(f);
}
if(c1=='?') {
mime_mode = 'Q'; /* still in MIME */
mime_ungetc0(c2,f);
return c1;
}
if((c3 = mime_getc0(f)) == EOF) return (EOF);
if(c2<=' ') return c2;
mime_mode = 'Q'; /* still in MIME */
#define hex(c) (('0'<=c&&c<='9')?(c-'0'):\
('A'<=c&&c<='F')?(c-'A'+10):('a'<=c&&c<='f')?(c-'a'+10):0)
return ((hex(c2)<<4) + hex(c3));
}
if(mime_mode != 'B') {
mime_mode = FALSE;
return getc(f);
}
/* Base64 encoding */
/*
MIME allows line break in the middle of
Base64, but we are very pessimistic in decoding
in unbuf mode because MIME encoded code may broken by
less or editor's control sequence (such as ESC-[-K in unbuffered
mode. ignore incomplete MIME.
*/
mode = mime_mode;
mime_mode = exit_mode; /* prepare for quit */
while ((c1 = mime_getc0(f))<=' ') {
if(c1==EOF)
return (EOF);
}
if((c2 = mime_getc0(f))<=' ') {
if(c2==EOF)
return (EOF);
if(mimebuf_f!=FIXED_MIME) input_mode = ASCII;
return c2;
}
if((c1 == '?') && (c2 == '=')) {
input_mode = ASCII;
while((c1 = getc(f))==' ' /* || c1=='\n' || c1=='\r' */);
return c1;
}
if((c3 = mime_getc0(f))<=' ') {
if(c3==EOF)
return (EOF);
if(mimebuf_f!=FIXED_MIME) input_mode = ASCII;
return c3;
}
if((c4 = mime_getc0(f))<=' ') {
if(c4==EOF)
return (EOF);
if(mimebuf_f!=FIXED_MIME) input_mode = ASCII;
return c4;
}
mime_mode = mode; /* still in MIME sigh... */
/* BASE 64 decoding */
t1 = 0x3f & base64decode(c1);
t2 = 0x3f & base64decode(c2);
t3 = 0x3f & base64decode(c3);
t4 = 0x3f & base64decode(c4);
cc = ((t1 << 2) & 0x0fc) | ((t2 >> 4) & 0x03);
if(c2 != '=') {
Fifo(mime_last++) = cc;
cc = ((t2 << 4) & 0x0f0) | ((t3 >> 2) & 0x0f);
if(c3 != '=') {
Fifo(mime_last++) = cc;
cc = ((t3 << 6) & 0x0c0) | (t4 & 0x3f);
if(c4 != '=')
Fifo(mime_last++) = cc;
}
} else {
return c1;
}
return Fifo(mime_top++);
}
static int
mime_ungetc(c)
unsigned int c;
{
Fifo(mime_last++) = c;
return c;
}
#ifdef STRICT_MIME
int
mime_integrity(f,p)
FILE *f;
unsigned char *p;
{
int c,d;
unsigned int q;
/* In buffered mode, read until =? or NL or buffer fffull
*/
mime_input = mime_top;
mime_last = mime_top;
while(*p) Fifo(mime_input++) = *p++;
d = 0;
q = mime_input;
while((c=getc(f))!=EOF) {
if(((mime_input-mime_top)&MIME_BUF_MASK)==0) break;
if(c=='=' && d=='?') {
/* checked. skip header, start decode */
Fifo(mime_input++) = c;
mime_input = q;
return 1;
}
if(!( (c=='+'||c=='/'|| c=='=' || c=='?' ||
('a'<=c && c<='z')||('A'<= c && c<='Z')||('0'<=c && c<='9'))))
break;
/* Should we check length mod 4? */
Fifo(mime_input++) = c;
d=c;
}
/* In case of Incomplete MIME, no MIME decode */
Fifo(mime_input++) = c;
mime_last = mime_input; /* point undecoded buffer */
mime_mode = 1; /* no decode on Fifo last in mime_getc */
return 1;
}
#endif
static int
base64decode(c)
int c;
{
int i;
if(c > '@')
if(c < '[')
i = c - 'A'; /* A..Z 0-25 */
else
i = c - 'G' /* - 'a' + 26 */ ; /* a..z 26-51 */
else if(c > '/')
i = c - '0' + '4' /* - '0' + 52 */ ; /* 0..9 52-61 */
else if(c == '+')
i = '>' /* 62 */ ; /* + 62 */
else
i = '?' /* 63 */ ; /* / 63 */
return (i);
}
static void
reinit()
{
unbuf_f = FALSE;
estab_f = FALSE;
nop_f = FALSE;
binmode_f = TRUE;
rot_f = FALSE;
input_f = FALSE;
alpha_f = FALSE;
mime_f = TRUE;
mimebuf_f = FALSE;
broken_f = FALSE;
iso8859_f = FALSE;
x0201_f = TRUE;
x0201_f = NO_X0201;
fold_f = FALSE;
kanji_intro = DEFAULT_J;
ascii_intro = DEFAULT_R;
oconv = DEFAULT_CONV;
output_mode = ASCII;
input_mode = ASCII;
shift_mode = FALSE;
mime_mode = FALSE;
file_out = FALSE;
add_cr = FALSE;
del_cr = FALSE;
line = 0;
}
#ifndef PERL_XS
int
usage()
{
fprintf(stderr,"USAGE: nkf(nkf32,wnkf,nkf2) -[flags] [in file] .. [out file for -O flag]\n");
fprintf(stderr,"Flags:\n");
fprintf(stderr,"b,u Output is bufferred (DEFAULT),Output is unbufferred\n");
#ifdef DEFAULT_CODE_SJIS
fprintf(stderr,"j,s,e Outout code is JIS 7 bit, Shift JIS (DEFAULT), AT&T JIS (EUC)\n");
#endif
#ifdef DEFAULT_CODE_JIS
fprintf(stderr,"j,s,e Outout code is JIS 7 bit (DEFAULT), Shift JIS, AT&T JIS (EUC)\n");
#endif
#ifdef DEFAULT_CODE_EUC
fprintf(stderr,"j,s,e Outout code is JIS 7 bit, Shift JIS, AT&T JIS (EUC) (DEFAULT)\n");
#endif
fprintf(stderr,"J,S,E Input assumption is JIS 7 bit , Shift JIS, AT&T JIS (EUC)\n");
fprintf(stderr,"t no conversion\n");
fprintf(stderr,"i_ Output sequence to designate JIS-kanji (DEFAULT B)\n");
fprintf(stderr,"o_ Output sequence to designate ASCII (DEFAULT B)\n");
fprintf(stderr,"r {de/en}crypt ROT13/47\n");
fprintf(stderr,"v Show this usage\n");
fprintf(stderr,"m[BQ0] MIME decode [B:base64,Q:quoted,0:no decode]\n");
fprintf(stderr,"l ISO8859-1 (Latin-1) support\n");
fprintf(stderr,"f Folding: -f60 or -f\n");
fprintf(stderr,"Z[0-2] Convert X0208 alphabet to ASCII 1: Kankaku to space,2: 2 spaces\n");
fprintf(stderr,"X,x Assume X0201 kana in MS-Kanji, -x preserves X0201\n");
fprintf(stderr,"B[0-2] Broken input 0: missing ESC,1: any X on ESC-[($]-X,2: ASCII on NL\n");
#ifdef MSDOS
fprintf(stderr,"T Text mode output\n");
#endif
fprintf(stderr,"O Output to File (DEFAULT 'nkf.out')\n");
fprintf(stderr,"d,c Delete \\r in line feed, Add \\r in line feed\n");
fprintf(stderr,"Network Kanji Filter Version %s (%s) "
#if defined(MSDOS) && !defined(_Windows)
"for DOS"
#endif
#if !defined(__WIN32__) && defined(_Windows)
"for Win16"
#endif
#if defined(__WIN32__) && defined(_Windows)
"for Win32"
#endif
#ifdef __OS2__
"for OS/2"
#endif
,Version,Patchlevel);
fprintf(stderr,"\n%s\n",CopyRight);
return 0;
}
#endif
/**
** $B%Q%C%A@):n<T(B
** void@merope.pleiades.or.jp (Kusakabe Youichi)
** NIDE Naoyuki <nide@ics.nara-wu.ac.jp>
** ohta@src.ricoh.co.jp (Junn Ohta)
** inouet@strl.nhk.or.jp (Tomoyuki Inoue)
** kiri@pulser.win.or.jp (Tetsuaki Kiriyama)
** Kimihiko Sato <sato@sail.t.u-tokyo.ac.jp>
** a_kuroe@kuroe.aoba.yokohama.jp (Akihiko Kuroe)
** kono@ie.u-ryukyu.ac.jp (Shinji Kono)
** GHG00637@nifty-serve.or.jp (COW)
**
** $B:G=*99?7F|(B
** 1998.11.7
**/
/* end */