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#ifdef USE_UNICODE
#include "wc.h"
#include "ucs.h"
#include "utf7.h"
#include "wtf.h"
#define SD WC_UTF7_MAP_SET_D
#define SO WC_UTF7_MAP_SET_O
#define SB WC_UTF7_MAP_SET_B
#define BB WC_UTF7_MAP_BASE64
#define BP WC_UTF7_MAP_PLUS
#define BM WC_UTF7_MAP_MINUS
#define CD (WC_UTF7_MAP_SET_D | WC_UTF7_MAP_C0)
#define CB (WC_UTF7_MAP_SET_B | WC_UTF7_MAP_C0)
#define C1 WC_UTF7_MAP_C1
wc_uint8 WC_UTF7_MAP[ 0x100 ] = {
/* TAB NL CR */
CB, CB, CB, CB, CB, CB, CB, CB, CB, CD, CD, CB, CB, CD, CB, CB,
/* */
CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB, CB,
/* SP ! " # $ % & ' ( ) * + , - . / */
SD, SO, SO, SO, SO, SO, SO, SD, SD, SD, SO, BP, SD, BM, SD, BB,
/* 0 1 2 3 4 5 6 7 8 9 : ; < = > ? */
BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, SD, SO, SO, SO, SO, SD,
/* @ A B C D E F G H I J K L M N O */
BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB,
/* P Q R S T U V W X Y Z [ \ ] ^ _ */
BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, SO, SB, SO, SO, SO,
/* ` a b c d e f g h i j k l m n o */
SO, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB,
/* p q r s t u v w x y z { | } ~ DEL */
BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, BB, SO, SO, SO, SB, CB,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
};
static char c_base64_map[ 0x60 ] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
};
static char base64_c_map[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
#define BASE64_C(x) base64_c_map[(x)]
#define C_BASE64(x) c_base64_map[(x) - 0x20]
Str
wc_conv_from_utf7(Str is, wc_ces ces)
{
Str os;
wc_uchar *sp = (wc_uchar *)is->ptr;
wc_uchar *ep = sp + is->length;
wc_uchar *p;
int state = WC_UTF7_NOSTATE;
wc_uint32 b, high = 0;
wc_status st;
for (p = sp; p < ep && *p < 0x80 && *p != WC_C_UTF7_PLUS; p++)
;
if (p == ep)
return is;
os = Strnew_size(is->length * 4 / 3);
if (p > sp)
Strcat_charp_n(os, is->ptr, (int)(p - sp));
st.tag = NULL;
st.ntag = 0;
for (; p < ep; p++) {
switch (state) {
case WC_UTF7_NOSTATE:
if (*p == WC_C_UTF7_PLUS) {
state = WC_UTF7_PLUS;
st.shift = 16;
st.base = 0;
high = 0;
continue;
}
break;
case WC_UTF7_PLUS:
if (*p == WC_C_UTF7_MINUS)
wtf_push_ucs(os, (wc_uint32)WC_C_UTF7_PLUS, &st);
case WC_UTF7_BASE64:
switch (WC_UTF7_MAP[*p]) {
case BB: /* [A-Za-z0-9/] */
case BP: /* '+' */
b = C_BASE64(*p);
st.shift -= 6;
if (st.shift <= 0) {
st.base |= b >> (- st.shift);
if (st.base >= WC_C_UCS2_SURROGATE &&
st.base < WC_C_UCS2_SURROGATE_LOW) {
if (! high)
high = st.base;
else
high = 0; /* error */
} else if (st.base >= WC_C_UCS2_SURROGATE_LOW &&
st.base <= WC_C_UCS2_SURROGATE_END) {
if (high)
wtf_push_ucs(os, wc_utf16_to_ucs(high, st.base), &st);
/* else; */ /* error */
high = 0;
} else if (st.base != WC_C_UCS2_BOM)
wtf_push_ucs(os, st.base, &st);
st.shift += 16;
st.base = 0;
}
st.base |= (b << st.shift) & 0xffff;
state = WC_UTF7_BASE64;
continue;
case BM: /* '-' */
state = WC_UTF7_NOSTATE;
continue;
}
}
switch (WC_UTF7_MAP[*p]) {
case CD:
case CB:
Strcat_char(os, (char)*p);
break;
case C1:
wtf_push_unknown(os, p, 1);
break;
default:
wtf_push_ucs(os, (wc_uint32)*p, &st);
break;
}
}
return os;
}
static void
wc_push_ucs_to_utf7(Str os, wc_uint32 ucs, wc_status *st)
{
if (ucs > WC_C_UNICODE_END)
return;
if (ucs > WC_C_UCS2_END) {
ucs = wc_ucs_to_utf16(ucs);
wc_push_ucs_to_utf7(os, ucs >> 16, st);
wc_push_ucs_to_utf7(os, ucs & 0xffff, st);
return;
}
if (ucs < 0x80) {
switch (WC_UTF7_MAP[ucs]) {
case BB:
case BM:
case SD:
case CD:
if (st->state == WC_UTF7_BASE64) {
Strcat_char(os, BASE64_C(st->base));
Strcat_char(os, WC_C_UTF7_MINUS);
st->state = WC_UTF7_NOSTATE;
}
Strcat_char(os, (char)ucs);
return;
case BP:
if (st->state == WC_UTF7_BASE64) {
Strcat_char(os, BASE64_C(st->base));
Strcat_char(os, WC_C_UTF7_MINUS);
st->state = WC_UTF7_NOSTATE;
}
Strcat_char(os, WC_C_UTF7_PLUS);
Strcat_char(os, WC_C_UTF7_MINUS);
return;
}
}
if (st->state == WC_UTF7_BASE64 && st->shift) {
st->shift += 16;
st->base |= ucs >> st->shift;
Strcat_char(os, BASE64_C(st->base));
} else {
if (st->state != WC_UTF7_BASE64) {
Strcat_char(os, WC_C_UTF7_PLUS);
st->state = WC_UTF7_BASE64;
}
st->shift = 16;
st->base = 0;
}
st->shift -= 6;
Strcat_char(os, BASE64_C((ucs >> st->shift) & 0x3f));
st->shift -= 6;
Strcat_char(os, BASE64_C((ucs >> st->shift) & 0x3f));
if (st->shift) {
st->shift -= 6;
st->base = (ucs << (- st->shift)) & 0x3f;
}
return;
}
static int
wc_push_tag_to_utf7(Str os, int ntag, wc_status *st)
{
char *p;
if (ntag) {
p = wc_ucs_get_tag(ntag);
if (p == NULL)
ntag = 0;
}
if (ntag) {
wc_push_ucs_to_utf7(os, WC_C_LANGUAGE_TAG, st);
for (; *p; p++)
wc_push_ucs_to_utf7(os, WC_C_LANGUAGE_TAG0 | *p, st);
} else
wc_push_ucs_to_utf7(os, WC_C_CANCEL_TAG, st);
return ntag;
}
void
wc_push_to_utf7(Str os, wc_wchar_t cc, wc_status *st)
{
char *p;
while (1) {
switch (WC_CCS_SET(cc.ccs)) {
case WC_CCS_UCS4:
if (cc.code > WC_C_UNICODE_END) {
cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
continue;
}
case WC_CCS_US_ASCII:
case WC_CCS_UCS2:
if (st->ntag)
st->ntag = wc_push_tag_to_utf7(os, 0, st);
wc_push_ucs_to_utf7(os, cc.code, st);
return;
case WC_CCS_UCS_TAG:
if (WcOption.use_language_tag && wc_ucs_tag_to_tag(cc.code) != st->ntag)
st->ntag = wc_push_tag_to_utf7(os, wc_ucs_tag_to_tag(cc.code), st);
wc_push_ucs_to_utf7(os, wc_ucs_tag_to_ucs(cc.code), st);
return;
case WC_CCS_ISO_8859_1:
if (st->ntag)
st->ntag = wc_push_tag_to_utf7(os, 0, st);
wc_push_ucs_to_utf7(os, cc.code | 0x80, st);
return;
case WC_CCS_UNKNOWN_W:
if (!WcOption.no_replace) {
if (st->ntag)
st->ntag = wc_push_tag_to_utf7(os, 0, st);
for (p = WC_REPLACE_W; *p; p++)
wc_push_ucs_to_utf7(os, (wc_uint32)*p, st);
}
return;
case WC_CCS_UNKNOWN:
if (!WcOption.no_replace) {
if (st->ntag)
st->ntag = wc_push_tag_to_utf7(os, 0, st);
for (p = WC_REPLACE; *p; p++)
wc_push_ucs_to_utf7(os, (wc_uint32)*p, st);
}
return;
default:
if (WcOption.ucs_conv &&
(cc.code = wc_any_to_ucs(cc)) != WC_C_UCS4_ERROR)
cc.ccs = WC_CCS_UCS2;
else
cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
continue;
}
}
}
void
wc_push_to_utf7_end(Str os, wc_status *st)
{
if (st->ntag)
st->ntag = wc_push_tag_to_utf7(os, 0, st);
if (st->state == WC_UTF7_BASE64) {
if (st->shift)
Strcat_char(os, BASE64_C(st->base));
Strcat_char(os, WC_C_UTF7_MINUS);
}
return;
}
Str
wc_char_conv_from_utf7(wc_uchar c, wc_status *st)
{
static Str os;
static wc_uint32 high;
wc_uint32 b;
if (st->state == -1) {
st->state = WC_UTF7_NOSTATE;
os = Strnew_size(8);
}
switch (st->state) {
case WC_UTF7_NOSTATE:
if (c == WC_C_UTF7_PLUS) {
st->state = WC_UTF7_PLUS;
st->shift = 16;
st->base = 0;
high = 0;
return NULL;
}
break;
case WC_UTF7_PLUS:
if (c == WC_C_UTF7_MINUS) {
wtf_push_ucs(os, (wc_uint32)WC_C_UTF7_PLUS, st);
st->state = -1;
return os;
}
case WC_UTF7_BASE64:
switch (WC_UTF7_MAP[c]) {
case BB: /* [A-Za-z0-9/] */
case BP: /* '+' */
b = C_BASE64(c);
st->shift -= 6;
if (st->shift <= 0) {
st->base |= b >> (- st->shift);
if (st->base >= WC_C_UCS2_SURROGATE &&
st->base < WC_C_UCS2_SURROGATE_LOW) {
if (! high)
high = st->base;
else
high = 0; /* error */
} else if (st->base >= WC_C_UCS2_SURROGATE_LOW &&
st->base <= WC_C_UCS2_SURROGATE_END) {
if (high)
wtf_push_ucs(os, wc_utf16_to_ucs(high, st->base), st);
/* else; */ /* error */
high = 0;
} else if (st->base != WC_C_UCS2_BOM)
wtf_push_ucs(os, st->base, st);
st->shift += 16;
st->base = 0;
}
st->base |= (b << st->shift) & 0xffff;
st->state = WC_UTF7_BASE64;
return os;
case BM: /* '-' */
st->state = -1;
return NULL;
}
}
switch (WC_UTF7_MAP[c]) {
case CD:
case CB:
Strcat_char(os, (char)c);
break;
case C1:
break;
default:
wtf_push_ucs(os, (wc_uint32)c, st);
break;
}
st->state = -1;
return os;
}
#endif
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