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Diffstat (limited to 'libX11/src/xlibi18n/lcUniConv/big5_emacs.h')
-rw-r--r--libX11/src/xlibi18n/lcUniConv/big5_emacs.h326
1 files changed, 163 insertions, 163 deletions
diff --git a/libX11/src/xlibi18n/lcUniConv/big5_emacs.h b/libX11/src/xlibi18n/lcUniConv/big5_emacs.h
index 67fb20097..246aebeb4 100644
--- a/libX11/src/xlibi18n/lcUniConv/big5_emacs.h
+++ b/libX11/src/xlibi18n/lcUniConv/big5_emacs.h
@@ -1,163 +1,163 @@
-
-/*
- * BIG5-0 and BIG5-1
- */
-
-/*
- BIG5 with its 13494 characters doesn't fit in a single 94x94 or 96x96
- block. Therefore Emacs/Mule developers, in a typically Japanese way of
- thinking, have developed an alternative encoding of BIG5 in two 94x94
- planes, very similar to the SHIFT_JIS encoding for JISX0208.
-
- Conversion between BIG5 codes (s1,s2) and BIG5-0 codes (c1,c2):
- Example. (s1,s2) = 0xA140, (c1,c2) = 0x2121.
- 0xA1 <= s1 <= 0xC7, 0x40 <= s2 <= 0x7E || 0xA1 <= s2 <= 0xFE,
- 0x21 <= c1 <= 0x62, 0x21 <= c2 <= 0x7E.
- Invariant:
- 157*(s1-0xA1) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
- = 94*(c1-0x21)+(c2-0x21)
- Conversion (s1,s2) -> (c1,c2):
- t := 157*(s1-0xA1) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
- c1 := (t div 94) + 0x21
- c2 := (t mod 94) + 0x21
- Conversion (c1,c2) -> (s1,s2):
- t := 94*(c1-0x21)+(c2-0x21)
- t2 := t mod 157
- s1 := (t div 157) + 0xA1
- s2 := (t2 < 0x3F ? t2+0x40 : t2+0x62)
-
- Conversion between BIG5 codes (s1,s2) and BIG5-1 codes (c1,c2):
- Example. (s1,s2) = 0xC940, (c1,c2) = 0x2121.
- 0xC9 <= s1 <= 0xF9, 0x40 <= s2 <= 0x7E || 0xA1 <= s2 <= 0xFE,
- 0x21 <= c1 <= 0x72, 0x21 <= c2 <= 0x7E.
- Invariant:
- 157*(s1-0xC9) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
- = 94*(c1-0x21)+(c2-0x21)
- Conversion (s1,s2) -> (c1,c2):
- t := 157*(s1-0xC9) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
- c1 := (t div 94) + 0x21
- c2 := (t mod 94) + 0x21
- Conversion (c1,c2) -> (s1,s2):
- t := 94*(c1-0x21)+(c2-0x21)
- t2 := t mod 157
- s1 := (t div 157) + 0xC9
- s2 := (t2 < 0x3F ? t2+0x40 : t2+0x62)
- */
-
-static int
-big5_0_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
-{
- unsigned char c1 = s[0];
- if (c1 >= 0x21 && c1 <= 0x62) {
- if (n >= 2) {
- unsigned char c2 = s[1];
- if (c2 >= 0x21 && c2 <= 0x7e) {
- unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
- if (0) {
- /* Unoptimized. */
- unsigned char buf[2];
- buf[0] = (i / 157) + 0xa1;
- i = i % 157;
- buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
- return big5_mbtowc(conv,pwc,buf,2);
- } else {
- /* Inline the implementation of big5_mbtowc. */
- if (i < 6121) {
- unsigned short wc = big5_2uni_pagea1[i];
- if (wc != 0xfffd) {
- *pwc = (ucs4_t) wc;
- return 2;
- }
- }
- }
- }
- return RET_ILSEQ;
- }
- return RET_TOOFEW(0);
- }
- return RET_ILSEQ;
-}
-
-static int
-big5_1_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
-{
- unsigned char c1 = s[0];
- if (c1 >= 0x21 && c1 <= 0x72) {
- if (n >= 2) {
- unsigned char c2 = s[1];
- if (c2 >= 0x21 && c2 <= 0x7e) {
- unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
- if (0) {
- /* Unoptimized. */
- unsigned char buf[2];
- buf[0] = (i / 157) + 0xc9;
- i = i % 157;
- buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
- return big5_mbtowc(conv,pwc,buf,2);
- } else {
- /* Inline the implementation of big5_mbtowc. */
- if (i < 7652) {
- unsigned short wc = big5_2uni_pagec9[i];
- if (wc != 0xfffd) {
- *pwc = (ucs4_t) wc;
- return 2;
- }
- }
- }
- }
- return RET_ILSEQ;
- }
- return RET_TOOFEW(0);
- }
- return RET_ILSEQ;
-}
-
-static int
-big5_0_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
-{
- if (n >= 2) {
- unsigned char buf[2];
- int ret = big5_wctomb(conv,buf,wc,2);
- if (ret != RET_ILSEQ) {
- unsigned char s1, s2;
- if (ret != 2) abort();
- s1 = buf[0];
- s2 = buf[1];
- if (!(s1 >= 0xa1)) abort();
- if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
- if (s1 < 0xc9) {
- unsigned int t = 157 * (s1 - 0xa1) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
- r[0] = (t / 94) + 0x21;
- r[1] = (t % 94) + 0x21;
- return 2;
- }
- }
- return RET_ILSEQ;
- }
- return RET_TOOSMALL;
-}
-
-static int
-big5_1_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
-{
- if (n >= 2) {
- unsigned char buf[2];
- int ret = big5_wctomb(conv,buf,wc,2);
- if (ret != RET_ILSEQ) {
- unsigned char s1, s2;
- if (ret != 2) abort();
- s1 = buf[0];
- s2 = buf[1];
- if (!(s1 <= 0xf9)) abort();
- if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
- if (s1 >= 0xc9) {
- unsigned int t = 157 * (s1 - 0xc9) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
- r[0] = (t / 94) + 0x21;
- r[1] = (t % 94) + 0x21;
- return 2;
- }
- }
- return RET_ILSEQ;
- }
- return RET_TOOSMALL;
-}
+
+/*
+ * BIG5-0 and BIG5-1
+ */
+
+/*
+ BIG5 with its 13494 characters doesn't fit in a single 94x94 or 96x96
+ block. Therefore Emacs/Mule developers, in a typically Japanese way of
+ thinking, have developed an alternative encoding of BIG5 in two 94x94
+ planes, very similar to the SHIFT_JIS encoding for JISX0208.
+
+ Conversion between BIG5 codes (s1,s2) and BIG5-0 codes (c1,c2):
+ Example. (s1,s2) = 0xA140, (c1,c2) = 0x2121.
+ 0xA1 <= s1 <= 0xC7, 0x40 <= s2 <= 0x7E || 0xA1 <= s2 <= 0xFE,
+ 0x21 <= c1 <= 0x62, 0x21 <= c2 <= 0x7E.
+ Invariant:
+ 157*(s1-0xA1) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
+ = 94*(c1-0x21)+(c2-0x21)
+ Conversion (s1,s2) -> (c1,c2):
+ t := 157*(s1-0xA1) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
+ c1 := (t div 94) + 0x21
+ c2 := (t mod 94) + 0x21
+ Conversion (c1,c2) -> (s1,s2):
+ t := 94*(c1-0x21)+(c2-0x21)
+ t2 := t mod 157
+ s1 := (t div 157) + 0xA1
+ s2 := (t2 < 0x3F ? t2+0x40 : t2+0x62)
+
+ Conversion between BIG5 codes (s1,s2) and BIG5-1 codes (c1,c2):
+ Example. (s1,s2) = 0xC940, (c1,c2) = 0x2121.
+ 0xC9 <= s1 <= 0xF9, 0x40 <= s2 <= 0x7E || 0xA1 <= s2 <= 0xFE,
+ 0x21 <= c1 <= 0x72, 0x21 <= c2 <= 0x7E.
+ Invariant:
+ 157*(s1-0xC9) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
+ = 94*(c1-0x21)+(c2-0x21)
+ Conversion (s1,s2) -> (c1,c2):
+ t := 157*(s1-0xC9) + (s2 < 0x80 ? s2-0x40 : s2-0x62)
+ c1 := (t div 94) + 0x21
+ c2 := (t mod 94) + 0x21
+ Conversion (c1,c2) -> (s1,s2):
+ t := 94*(c1-0x21)+(c2-0x21)
+ t2 := t mod 157
+ s1 := (t div 157) + 0xC9
+ s2 := (t2 < 0x3F ? t2+0x40 : t2+0x62)
+ */
+
+static int
+big5_0_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ unsigned char c1 = s[0];
+ if (c1 >= 0x21 && c1 <= 0x62) {
+ if (n >= 2) {
+ unsigned char c2 = s[1];
+ if (c2 >= 0x21 && c2 <= 0x7e) {
+ unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
+ if (0) {
+ /* Unoptimized. */
+ unsigned char buf[2];
+ buf[0] = (i / 157) + 0xa1;
+ i = i % 157;
+ buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
+ return big5_mbtowc(conv,pwc,buf,2);
+ } else {
+ /* Inline the implementation of big5_mbtowc. */
+ if (i < 6121) {
+ unsigned short wc = big5_2uni_pagea1[i];
+ if (wc != 0xfffd) {
+ *pwc = (ucs4_t) wc;
+ return 2;
+ }
+ }
+ }
+ }
+ return RET_ILSEQ;
+ }
+ return RET_TOOFEW(0);
+ }
+ return RET_ILSEQ;
+}
+
+static int
+big5_1_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ unsigned char c1 = s[0];
+ if (c1 >= 0x21 && c1 <= 0x72) {
+ if (n >= 2) {
+ unsigned char c2 = s[1];
+ if (c2 >= 0x21 && c2 <= 0x7e) {
+ unsigned int i = 94 * (c1 - 0x21) + (c2 - 0x21);
+ if (0) {
+ /* Unoptimized. */
+ unsigned char buf[2];
+ buf[0] = (i / 157) + 0xc9;
+ i = i % 157;
+ buf[1] = i + (i < 0x3f ? 0x40 : 0x62);
+ return big5_mbtowc(conv,pwc,buf,2);
+ } else {
+ /* Inline the implementation of big5_mbtowc. */
+ if (i < 7652) {
+ unsigned short wc = big5_2uni_pagec9[i];
+ if (wc != 0xfffd) {
+ *pwc = (ucs4_t) wc;
+ return 2;
+ }
+ }
+ }
+ }
+ return RET_ILSEQ;
+ }
+ return RET_TOOFEW(0);
+ }
+ return RET_ILSEQ;
+}
+
+static int
+big5_0_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+ if (n >= 2) {
+ unsigned char buf[2];
+ int ret = big5_wctomb(conv,buf,wc,2);
+ if (ret != RET_ILSEQ) {
+ unsigned char s1, s2;
+ if (ret != 2) abort();
+ s1 = buf[0];
+ s2 = buf[1];
+ if (!(s1 >= 0xa1)) abort();
+ if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
+ if (s1 < 0xc9) {
+ unsigned int t = 157 * (s1 - 0xa1) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
+ r[0] = (t / 94) + 0x21;
+ r[1] = (t % 94) + 0x21;
+ return 2;
+ }
+ }
+ return RET_ILSEQ;
+ }
+ return RET_TOOSMALL;
+}
+
+static int
+big5_1_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+ if (n >= 2) {
+ unsigned char buf[2];
+ int ret = big5_wctomb(conv,buf,wc,2);
+ if (ret != RET_ILSEQ) {
+ unsigned char s1, s2;
+ if (ret != 2) abort();
+ s1 = buf[0];
+ s2 = buf[1];
+ if (!(s1 <= 0xf9)) abort();
+ if (!((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0xa1 && s2 <= 0xfe))) abort();
+ if (s1 >= 0xc9) {
+ unsigned int t = 157 * (s1 - 0xc9) + s2 - (s2 < 0x80 ? 0x40 : 0x62);
+ r[0] = (t / 94) + 0x21;
+ r[1] = (t % 94) + 0x21;
+ return 2;
+ }
+ }
+ return RET_ILSEQ;
+ }
+ return RET_TOOSMALL;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 15:06:09 +0000