X-Git-Url: https://git.xinqibao.xyz/st.git/blobdiff_plain/aa35bbd7a16c6c210a7574a8c45bbe939d5b2922..3764f38fc805a8846bd18f1d555a10227fd14e29:/st.c

diff --git a/st.c b/st.c
index 124c047..9a979ea 100644
--- a/st.c
+++ b/st.c
@@ -70,8 +70,9 @@ char *argv0;
 #define LEN(a)     (sizeof(a) / sizeof(a)[0])
 #define DEFAULT(a, b)     (a) = (a) ? (a) : (b)
 #define BETWEEN(x, a, b)  ((a) <= (x) && (x) <= (b))
-#define ISCONTROLC0(c) (BETWEEN((uchar) (c), 0, 0x1f))
-#define ISCONTROLC1(c) (BETWEEN((uchar) (c), 0x80, 0x9f))
+#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
+#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
 #define LIMIT(x, a, b)    (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
 #define IS_SET(flag) ((term.mode & (flag)) != 0)
@@ -402,7 +403,6 @@ static void ttyread(void);
 static void ttyresize(void);
 static void ttysend(char *, size_t);
 static void ttywrite(const char *, size_t);
-static inline bool iscontrol(char);
 
 static void xdraws(char *, Glyph, int, int, int, int);
 static void xhints(void);
@@ -2300,17 +2300,12 @@ tputtab(int n) {
 	tmoveto(x, term.c.y);
 }
 
-static inline bool
-iscontrol(char c) {
-	return ISCONTROLC0(c) || ISCONTROLC1(c);
-}
-
 void
 techo(char *buf, int len) {
 	for(; len > 0; buf++, len--) {
 		char c = *buf;
 
-		if(iscontrol(c)) { /* control code */
+		if(ISCONTROL(c)) { /* control code */
 			if(c & 0x80) {
 				c &= 0x7f;
 				tputc("^", 1);
@@ -2439,16 +2434,17 @@ tputc(char *c, int len) {
 
 	if(len == 1) {
 		width = 1;
-		ascii = *c;
+		unicodep = ascii = *c;
 	} else {
 		utf8decode(c, &unicodep, UTF_SIZ);
 		width = wcwidth(unicodep);
+		control = ISCONTROLC1(unicodep);
 		ascii = unicodep;
 	}
 
-	control = iscontrol(ascii) && width == 1;
 	if(IS_SET(MODE_PRINT))
 		tprinter(c, len);
+	control = ISCONTROL(unicodep);
 
 	/*
 	 * STR sequence must be checked before anything else
@@ -2460,7 +2456,7 @@ tputc(char *c, int len) {
 		if(width == 1 &&
 		   (ascii == '\a' || ascii == 030 ||
 		    ascii == 032  || ascii == 033 ||
-		    ISCONTROLC1(ascii))) {
+		    ISCONTROLC1(unicodep))) {
 			term.esc &= ~ESC_STR;
 			term.esc |= ESC_STR_END;
 		} else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
@@ -2503,10 +2499,10 @@ tputc(char *c, int len) {
 				csiparse();
 				csihandle();
 			}
+			return;
 		} else if(term.esc & ESC_ALTCHARSET) {
 			tdeftran(ascii);
 			tselcs();
-			term.esc = 0;
 		} else if(term.esc & ESC_TEST) {
 			if(ascii == '8') { /* DEC screen alignment test. */
 				char E[UTF_SIZ] = "E";
@@ -2517,15 +2513,14 @@ tputc(char *c, int len) {
 						tsetchar(E, &term.c.attr, x, y);
 				}
 			}
-			term.esc = 0;
 		} else {
 			switch(ascii) {
 			case '[':
 				term.esc |= ESC_CSI;
-				break;
+				return;
 			case '#':
 				term.esc |= ESC_TEST;
-				break;
+				return;
 			case 'P': /* DCS -- Device Control String */
 			case '_': /* APC -- Application Program Command */
 			case '^': /* PM -- Privacy Message */
@@ -2534,29 +2529,26 @@ tputc(char *c, int len) {
 				strreset();
 				strescseq.type = ascii;
 				term.esc |= ESC_STR;
-				break;
+				return;
 			case '(': /* set primary charset G0 */
 			case ')': /* set secondary charset G1 */
 			case '*': /* set tertiary charset G2 */
 			case '+': /* set quaternary charset G3 */
 				term.icharset = ascii - '(';
 				term.esc |= ESC_ALTCHARSET;
-				break;
+				return;
 			case 'D': /* IND -- Linefeed */
 				if(term.c.y == term.bot) {
 					tscrollup(term.top, 1);
 				} else {
 					tmoveto(term.c.x, term.c.y+1);
 				}
-				term.esc = 0;
 				break;
 			case 'E': /* NEL -- Next line */
 				tnewline(1); /* always go to first col */
-				term.esc = 0;
 				break;
 			case 'H': /* HTS -- Horizontal tab stop */
 				term.tabs[term.c.x] = 1;
-				term.esc = 0;
 				break;
 			case 'M': /* RI -- Reverse index */
 				if(term.c.y == term.top) {
@@ -2564,46 +2556,38 @@ tputc(char *c, int len) {
 				} else {
 					tmoveto(term.c.x, term.c.y-1);
 				}
-				term.esc = 0;
 				break;
 			case 'Z': /* DECID -- Identify Terminal */
 				ttywrite(VT102ID, sizeof(VT102ID) - 1);
-				term.esc = 0;
 				break;
 			case 'c': /* RIS -- Reset to inital state */
 				treset();
-				term.esc = 0;
 				xresettitle();
 				xloadcols();
 				break;
 			case '=': /* DECPAM -- Application keypad */
 				term.mode |= MODE_APPKEYPAD;
-				term.esc = 0;
 				break;
 			case '>': /* DECPNM -- Normal keypad */
 				term.mode &= ~MODE_APPKEYPAD;
-				term.esc = 0;
 				break;
 			case '7': /* DECSC -- Save Cursor */
 				tcursor(CURSOR_SAVE);
-				term.esc = 0;
 				break;
 			case '8': /* DECRC -- Restore Cursor */
 				tcursor(CURSOR_LOAD);
-				term.esc = 0;
 				break;
 			case '\\': /* ST -- String Terminator */
 				if(term.esc & ESC_STR_END)
 					strhandle();
-				term.esc = 0;
 				break;
 			default:
 				fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
 					(uchar) ascii, isprint(ascii)? ascii:'.');
-				term.esc = 0;
 				break;
 			}
 		}
+		term.esc = 0;
 		/*
 		 * All characters which form part of a sequence are not
 		 * printed