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-rw-r--r--base/base_rune.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/base/base_rune.c b/base/base_rune.c
deleted file mode 100644
index 4aa81df3..00000000
--- a/base/base_rune.c
+++ /dev/null
@@ -1,168 +0,0 @@
-enum
-{
- UTFmax = 3, /* maximum bytes per rune */
- Runesync = 0x80, /* cannot represent part of a UTF sequence (<) */
- Runeself = 0x80, /* rune and UTF sequences are the same (<) */
- Runeerror = 0x80 /* decoding error in UTF */
-};
-
-enum
-{
- Bit1 = 7,
- Bitx = 6,
- Bit2 = 5,
- Bit3 = 4,
- Bit4 = 3,
-
- T1 = ((1<<(Bit1+1))-1) ^ 0xFF, /* 0000 0000 */
- Tx = ((1<<(Bitx+1))-1) ^ 0xFF, /* 1000 0000 */
- T2 = ((1<<(Bit2+1))-1) ^ 0xFF, /* 1100 0000 */
- T3 = ((1<<(Bit3+1))-1) ^ 0xFF, /* 1110 0000 */
- T4 = ((1<<(Bit4+1))-1) ^ 0xFF, /* 1111 0000 */
-
- Rune1 = (1<<(Bit1+0*Bitx))-1, /* 0000 0000 0111 1111 */
- Rune2 = (1<<(Bit2+1*Bitx))-1, /* 0000 0111 1111 1111 */
- Rune3 = (1<<(Bit3+2*Bitx))-1, /* 1111 1111 1111 1111 */
-
- Maskx = (1<<Bitx)-1, /* 0011 1111 */
- Testx = Maskx ^ 0xFF, /* 1100 0000 */
-
- Bad = Runeerror
-};
-
-int
-chartorune(int *rune, char *str)
-{
- int c, c1, c2;
- int l;
-
- /*
- * one character sequence
- * 00000-0007F => T1
- */
- c = *(unsigned char*)str;
- if(c < Tx) {
- *rune = c;
- return 1;
- }
-
- /*
- * two character sequence
- * 0080-07FF => T2 Tx
- */
- c1 = *(unsigned char*)(str+1) ^ Tx;
- if(c1 & Testx)
- goto bad;
- if(c < T3) {
- if(c < T2)
- goto bad;
- l = ((c << Bitx) | c1) & Rune2;
- if(l <= Rune1)
- goto bad;
- *rune = l;
- return 2;
- }
-
- /*
- * three character sequence
- * 0800-FFFF => T3 Tx Tx
- */
- c2 = *(unsigned char*)(str+2) ^ Tx;
- if(c2 & Testx)
- goto bad;
- if(c < T4) {
- l = ((((c << Bitx) | c1) << Bitx) | c2) & Rune3;
- if(l <= Rune2)
- goto bad;
- *rune = l;
- return 3;
- }
-
- /*
- * bad decoding
- */
-bad:
- *rune = Bad;
- return 1;
-}
-
-int
-runetochar(char *str, int *rune)
-{
- int c;
-
- /*
- * one character sequence
- * 00000-0007F => 00-7F
- */
- c = *rune;
- if(c <= Rune1) {
- str[0] = c;
- return 1;
- }
-
- /*
- * two character sequence
- * 0080-07FF => T2 Tx
- */
- if(c <= Rune2) {
- str[0] = T2 | (c >> 1*Bitx);
- str[1] = Tx | (c & Maskx);
- return 2;
- }
-
- /*
- * three character sequence
- * 0800-FFFF => T3 Tx Tx
- */
- str[0] = T3 | (c >> 2*Bitx);
- str[1] = Tx | ((c >> 1*Bitx) & Maskx);
- str[2] = Tx | (c & Maskx);
- return 3;
-}
-
-int
-runelen(int c)
-{
- int rune;
- char str[10];
-
- rune = c;
- return runetochar(str, &rune);
-}
-
-int
-runenlen(int *r, int nrune)
-{
- int nb, c;
-
- nb = 0;
- while(nrune--) {
- c = *r++;
- if(c <= Rune1)
- nb++;
- else
- if(c <= Rune2)
- nb += 2;
- else
- nb += 3;
- }
- return nb;
-}
-
-int
-fullrune(char *str, int n)
-{
- int c;
-
- if(n > 0) {
- c = *(unsigned char*)str;
- if(c < Tx)
- return 1;
- if(n > 1)
- if(c < T3 || n > 2)
- return 1;
- }
- return 0;
-}
-