st

suckless terminal - with my changes
git clone https://pi.duncano.de/git/st.git
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commit 6fc471ccc660b305cf836dcb8d57cdbffb4ed017
parent 8b602a37a65a3c001bd9334d8b1cfc17fc5dd45c
Author: Markus Teich <markus.teich@stusta.mhn.de>
Date:   Sat, 22 Jun 2013 23:06:49 +0200

fix: consistent usage of bitmask operations on unicode functions

Diffstat:
st.c | 50+++++++++++++++++++++++---------------------------
1 file changed, 23 insertions(+), 27 deletions(-)

diff --git a/st.c b/st.c @@ -150,10 +150,6 @@ enum selection_snap { SNAP_LINE = 2 }; -/* bit macro */ -#undef B0 -enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 }; - typedef unsigned char uchar; typedef unsigned int uint; typedef unsigned long ulong; @@ -527,17 +523,17 @@ utf8decode(char *s, long *u) { rtn = 1; c = *s; - if(~c & B7) { /* 0xxxxxxx */ + if(~c & 0x80) { /* 0xxxxxxx */ *u = c; return rtn; - } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */ - *u = c&(B4|B3|B2|B1|B0); + } else if((c & 0xE0) == 0xC0) { /* 110xxxxx */ + *u = c & 0x1F; n = 1; - } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */ - *u = c&(B3|B2|B1|B0); + } else if((c & 0xF0) == 0xE0) { /* 1110xxxx */ + *u = c & 0x0F; n = 2; - } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */ - *u = c & (B2|B1|B0); + } else if((c & 0xF8) == 0xF0) { /* 11110xxx */ + *u = c & 0x07; n = 3; } else { goto invalid; @@ -545,10 +541,10 @@ utf8decode(char *s, long *u) { for(i = n, ++s; i > 0; --i, ++rtn, ++s) { c = *s; - if((c & (B7|B6)) != B7) /* 10xxxxxx */ + if((c & 0xC0) != 0x80) /* 10xxxxxx */ goto invalid; *u <<= 6; - *u |= c & (B5|B4|B3|B2|B1|B0); + *u |= c & 0x3F; } if((n == 1 && *u < 0x80) || @@ -577,20 +573,20 @@ utf8encode(long *u, char *s) { *sp = uc; /* 0xxxxxxx */ return 1; } else if(*u < 0x800) { - *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */ + *sp = (uc >> 6) | 0xC0; /* 110xxxxx */ n = 1; } else if(uc < 0x10000) { - *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */ + *sp = (uc >> 12) | 0xE0; /* 1110xxxx */ n = 2; } else if(uc <= 0x10FFFF) { - *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */ + *sp = (uc >> 18) | 0xF0; /* 11110xxx */ n = 3; } else { goto invalid; } for(i=n,++sp; i>0; --i,++sp) - *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */ + *sp = ((uc >> 6*(i-1)) & 0x3F) | 0x80; /* 10xxxxxx */ return n+1; invalid: @@ -613,16 +609,16 @@ isfullutf8(char *s, int b) { c3 = (uchar *)++s; if(b < 1) { return 0; - } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) { + } else if((*c1 & 0xE0) == 0xC0 && b == 1) { return 0; - } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) && + } else if((*c1 & 0xF0) == 0xE0 && ((b == 1) || - ((b == 2) && (*c2&(B7|B6)) == B7))) { + ((b == 2) && (*c2 & 0xC0) == 0x80))) { return 0; - } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) && + } else if((*c1 & 0xF8) == 0xF0 && ((b == 1) || - ((b == 2) && (*c2&(B7|B6)) == B7) || - ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) { + ((b == 2) && (*c2 & 0xC0) == 0x80) || + ((b == 3) && (*c2 & 0xC0) == 0x80 && (*c3 & 0xC0) == 0x80))) { return 0; } else { return 1; @@ -633,11 +629,11 @@ int utf8size(char *s) { uchar c = *s; - if(~c&B7) { + if(~c & 0x80) { return 1; - } else if((c&(B7|B6|B5)) == (B7|B6)) { + } else if((c & 0xE0) == 0xC0) { return 2; - } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { + } else if((c & 0xF0) == 0xE0) { return 3; } else { return 4; @@ -3456,7 +3452,7 @@ kpress(XEvent *ev) { if(len == 1 && e->state & Mod1Mask) { if(IS_SET(MODE_8BIT)) { if(*xstr < 0177) { - c = *xstr | B7; + c = *xstr | 0x80; ret = utf8encode(&c, cp); cp += ret; len = 0;