From ce05175372a9ddca1a225db0765ace1127a39293 Mon Sep 17 00:00:00 2001 From: Nicholas Date: Fri, 12 Nov 2021 09:22:01 -0800 Subject: chore: simplified organizational structure --- sys/base/arg.c | 71 ---------------------------------------------------------- 1 file changed, 71 deletions(-) delete mode 100644 sys/base/arg.c (limited to 'sys/base/arg.c') diff --git a/sys/base/arg.c b/sys/base/arg.c deleted file mode 100644 index 269043e..0000000 --- a/sys/base/arg.c +++ /dev/null @@ -1,71 +0,0 @@ -#include -#include - -// NOTE: this utf8 bit is copied from libunicode to remove the hard dependency just for ARG_BEGIN. - -#define UTFmax 4 -#define RuneSync 0x80u -#define RuneSelf 0x80u -#define RuneErr 0xFFFDu -#define RuneMax 0x10FFFFu -#define RuneMask 0x1FFFFFu - -#define Bit(i) (7-(i)) -/* N 0's preceded by i 1's e.g. T(Bit(2)) is 1100 0000 */ -#define Tbyte(i) (((1 << (Bit(i)+1))-1) ^ 0xFF) -/* 0000 0000 0000 0111 1111 1111 */ -#define RuneX(i) ((1 << (Bit(i) + ((i)-1)*Bitx))-1) -enum -{ - Bitx = Bit(1), - Tx = Tbyte(1), - Rune1 = (1 << (Bit(0)+0*Bitx)) - 1, - - Maskx = (1 << Bitx) - 1, /* 0011 1111 */ - Testx = Maskx ^ 0xff, /* 1100 0000 */ - - SurrogateMin = 0xD800, - SurrogateMax = 0xDFFF, - Bad = RuneErr, -}; - - -int -arg·bytetorune(uint32* r, byte* s) -{ - int c[4], i; - uint32 l; - - c[0] = *(ubyte*)(s); - if(c[0] < Tx) { - *r = c[0]; - return 1; - } - - l = c[0]; - for(i = 1; i < UTFmax; i++) { - c[i] = *(ubyte*)(s+i); - c[i] ^= Tx; - if (c[i] & Testx) goto bad; - - l = (l << Bitx) | c[i]; - if(c[0] < Tbyte(i + 2)) { - l &= RuneX(i + 1); - if (i == 1) { - if (c[0] < Tbyte(2) || l <= Rune1) - goto bad; - } else if (l <= RuneX(i) || l > RuneMax) - goto bad; - if (i == 2 && SurrogateMin <= l && l <= SurrogateMax) - goto bad; - - *r = l; - return i + 1; - } - } -bad: - *r = RuneErr; - return 1; -} - -char *argv0; -- cgit v1.2.1