X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=st.c;h=ac1954e4a20e56949f38dc2be871ea957298fcab;hb=6fc471ccc660b305cf836dcb8d57cdbffb4ed017;hp=2811876adf260efa70edcafc211acc0da6c2e746;hpb=5d3318c0c734a1d65e78ed4ce103b4517be8ec3b;p=st.git

diff --git a/st.c b/st.c
index 2811876..ac1954e 100644
--- 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;
@@ -888,11 +884,7 @@ bpress(XEvent *e) {
 		gettimeofday(&now, NULL);
 
 		/* Clear previous selection, logically and visually. */
-		if(sel.ob.x != -1) {
-			sel.ob.x = -1;
-			tsetdirt(sel.nb.y, sel.ne.y);
-			draw();
-		}
+		selclear(NULL);
 		sel.mode = 1;
 		sel.type = SEL_REGULAR;
 		sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
@@ -920,7 +912,6 @@ bpress(XEvent *e) {
 		if(sel.snap != 0) {
 			sel.mode++;
 			tsetdirt(sel.nb.y, sel.ne.y);
-			draw();
 		}
 		sel.tclick2 = sel.tclick1;
 		sel.tclick1 = now;
@@ -1108,7 +1099,7 @@ brelease(XEvent *e) {
 		selpaste(NULL);
 	} else if(e->xbutton.button == Button1) {
 		if(sel.mode < 2) {
-			sel.ob.x = -1;
+			selclear(NULL);
 		} else {
 			getbuttoninfo(e);
 			selcopy();
@@ -1441,7 +1432,7 @@ selscroll(int orig, int n) {
 
 	if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
 		if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
-			sel.ob.x = -1;
+			selclear(NULL);
 			return;
 		}
 		if(sel.type == SEL_RECTANGULAR) {
@@ -1951,7 +1942,7 @@ csihandle(void) {
 			tputtab(1);
 		break;
 	case 'J': /* ED -- Clear screen */
-		sel.ob.x = -1;
+		selclear(NULL);
 		switch(csiescseq.arg[0]) {
 		case 0: /* below */
 			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
@@ -2448,7 +2439,7 @@ tputc(char *c, int len) {
 	if(control && !(term.c.attr.mode & ATTR_GFX))
 		return;
 	if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
-		sel.ob.x = -1;
+		selclear(NULL);
 	if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
 		term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
 		tnewline(1);
@@ -3360,17 +3351,17 @@ focus(XEvent *ev) {
 	}
 }
 
-inline bool
+static inline bool
 match(uint mask, uint state) {
-	state &= ~(ignoremod);
+	state &= ~ignoremod;
 
 	if(mask == XK_NO_MOD && state)
 		return false;
 	if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
 		return false;
-	if((state & mask) != state)
-		return false;
-	return true;
+	if(mask == XK_ANY_MOD)
+		return true;
+	return state == mask;
 }
 
 void
@@ -3380,7 +3371,6 @@ numlock(const Arg *dummy) {
 
 char*
 kmap(KeySym k, uint state) {
-	uint mask;
 	Key *kp;
 	int i;
 
@@ -3395,12 +3385,10 @@ kmap(KeySym k, uint state) {
 	}
 
 	for(kp = key; kp < key + LEN(key); kp++) {
-		mask = kp->mask;
-
 		if(kp->k != k)
 			continue;
 
-		if(!match(mask, state))
+		if(!match(kp->mask, state))
 			continue;
 
 		if(kp->appkey > 0) {
@@ -3464,7 +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;