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Extract iso2022jp_put_state

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Nobuyoshi Nakada 2022-03-24 01:34:02 +09:00
parent 26a3de0dfd
commit a8d600edff
No known key found for this signature in database
GPG Key ID: 3582D74E1FEE4465
Notes: git 2024-09-20 07:59:02 +00:00 
Merged: https://github.com/ruby/ruby/pull/5696
1 changed files with 35 additions and 60 deletions
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95
enc/trans/iso2022.trans
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@ -79,6 +79,34 @@ iso2022jp_init(void *statep)
return 0;
}
static unsigned char *
iso2022jp_put_state(unsigned char *sp, unsigned char *o, int oldstate, int newstate)
{
if (oldstate != newstate) {
*o++ = 0x1b;
switch (newstate) {
case G0_ASCII:
*o++ = '(';
*o++ = 'B';
break;
case G0_JISX0201_KATAKANA:
*o++ = '(';
*o++ = 'I';
break;
case G0_JISX0208_1978:
*o++ = '$';
*o++ = '@';
break;
default:
*o++ = '$';
*o++ = 'B';
break;
}
*sp = newstate;
}
return o;
}
static VALUE
fun_si_iso2022jp_decoder(void *statep, const unsigned char *s, size_t l)
{
@ -154,24 +182,7 @@ fun_so_iso2022jp_encoder(void *statep, const unsigned char *s, size_t l, unsigne
else
newstate = G0_JISX0208_1983;
if (*sp != newstate) {
if (newstate == G0_ASCII) {
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
}
else if (newstate == G0_JISX0208_1978) {
*o++ = 0x1b;
*o++ = '$';
*o++ = '@';
}
else {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
}
*sp = newstate;
}
o = iso2022jp_put_state(sp, o, *sp, newstate);
if (l == 1) {
*o++ = s[0] & 0x7f;
@ -202,10 +213,7 @@ finish_iso2022jp_encoder(void *statep, unsigned char *o, size_t osize)
if (*sp == G0_ASCII)
return 0;
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
*sp = G0_ASCII;
o = iso2022jp_put_state(sp, o, *sp, G0_ASCII);
return o - output0;
}
@ -399,24 +407,7 @@ fun_so_cp5022x_encoder(void *statep, const unsigned char *s, size_t l,
else
newstate = G0_JISX0208_1983;
if (*sp != newstate) {
if (newstate == G0_ASCII) {
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
}
else if (newstate == G0_JISX0201_KATAKANA) {
*o++ = 0x1b;
*o++ = '(';
*o++ = 'I';
}
else {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
}
*sp = newstate;
}
o = iso2022jp_put_state(sp, o, sp[0], newstate);
if (l == 1) {
*o++ = s[0] & 0x7f;
@ -463,11 +454,7 @@ fun_so_cp50220_encoder(void *statep, const unsigned char *s, size_t l,
if (sp[0] == G0_JISX0201_KATAKANA) {
int c = sp[2] & 0x7F;
const char *p = tbl0208 + (c - 0x21) * 2;
if (sp[1] != G0_JISX0208_1983) {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
}
o = iso2022jp_put_state(sp, o, sp[1], G0_JISX0208_1983);
sp[0] = G0_JISX0208_1983;
*o++ = *p++;
if (l == 2 && s[0] == 0x8E) {
@ -488,12 +475,7 @@ fun_so_cp50220_encoder(void *statep, const unsigned char *s, size_t l,
if ((0xA1 <= s[1] && s[1] <= 0xB5) ||
(0xC5 <= s[1] && s[1] <= 0xC9) ||
(0xCF <= s[1] && s[1] <= 0xDF)) {
if (*sp != G0_JISX0208_1983) {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
*sp = G0_JISX0208_1983;
}
o = iso2022jp_put_state(sp, o, *sp, G0_JISX0208_1983);
*o++ = *p++;
*o++ = *p;
return o - output0;
@ -521,20 +503,13 @@ finish_cp50220_encoder(void *statep, unsigned char *o, size_t osize)
if (sp[0] == G0_JISX0201_KATAKANA) {
int c = sp[2] & 0x7F;
const char *p = tbl0208 + (c - 0x21) * 2;
if (sp[1] != G0_JISX0208_1983) {
*o++ = 0x1b;
*o++ = '$';
*o++ = 'B';
}
o = iso2022jp_put_state(sp, o, sp[1], G0_JISX0208_1983);
sp[0] = G0_JISX0208_1983;
*o++ = *p++;
*o++ = *p;
}
*o++ = 0x1b;
*o++ = '(';
*o++ = 'B';
*sp = G0_ASCII;
o = iso2022jp_put_state(sp, o, sp[0], G0_ASCII);
return o - output0;
}