Change internal character representation. - st - simple terminal
HTML git clone https://git.parazyd.org/st
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit 21f765426c36991edd8b14f4989d66187e9ff597
DIR parent 753fe862b14c7dd4b0449ab2c3bf22ecbb10030e
HTML Author: noname@inventati.org <noname@inventati.org>
Date: Tue, 21 Apr 2015 23:29:01 +0200
Change internal character representation.
Diffstat:
M st.c | 73 +++++++++++++++----------------
1 file changed, 35 insertions(+), 38 deletions(-)
---
DIR diff --git a/st.c b/st.c
@@ -72,6 +72,7 @@ char *argv0;
#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u) (BETWEEN(u, 0, 127) && strchr(worddelimiters, u) != NULL)
#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)
@@ -180,7 +181,7 @@ typedef XftDraw *Draw;
typedef XftColor Color;
typedef struct {
- char c[UTF_SIZ]; /* character code */
+ long u; /* character code */
ushort mode; /* attribute flags */
uint32_t fg; /* foreground */
uint32_t bg; /* background */
@@ -410,6 +411,7 @@ static void tstrsequence(uchar);
static inline ushort sixd_to_16bit(int);
static void xdraws(char *, Glyph, int, int, int, int);
+static void xdrawglyph(Glyph, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
static void xdrawcursor(void);
@@ -461,7 +463,6 @@ static size_t utf8decode(char *, long *, size_t);
static long utf8decodebyte(char, size_t *);
static size_t utf8encode(long, char *);
static char utf8encodebyte(long, size_t);
-static size_t utf8len(char *);
static size_t utf8validate(long *, size_t);
static ssize_t xwrite(int, const char *, size_t);
@@ -630,11 +631,6 @@ utf8encodebyte(long u, size_t i) {
}
size_t
-utf8len(char *c) {
- return utf8decode(c, &(long){0}, UTF_SIZ);
-}
-
-size_t
utf8validate(long *u, size_t i) {
if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
*u = UTF_INVALID;
@@ -679,7 +675,7 @@ tlinelen(int y) {
if(term.line[y][i - 1].mode & ATTR_WRAP)
return i;
- while(i > 0 && term.line[y][i - 1].c[0] == ' ')
+ while(i > 0 && term.line[y][i - 1].u == ' ')
--i;
return i;
@@ -736,7 +732,7 @@ selsnap(int mode, int *x, int *y, int direction) {
* beginning of a line.
*/
prevgp = &term.line[*y][*x];
- prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL;
+ prevdelim = ISDELIM(prevgp->u);
for(;;) {
newx = *x + direction;
newy = *y;
@@ -758,9 +754,9 @@ selsnap(int mode, int *x, int *y, int direction) {
break;
gp = &term.line[newy][newx];
- delim = strchr(worddelimiters, gp->c[0]) != NULL;
+ delim = ISDELIM(gp->u);
if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
- || (delim && gp->c[0] != prevgp->c[0])))
+ || (delim && gp->u != prevgp->u)))
break;
*x = newx;
@@ -936,7 +932,7 @@ bpress(XEvent *e) {
char *
getsel(void) {
char *str, *ptr;
- int y, bufsize, size, lastx, linelen;
+ int y, bufsize, lastx, linelen;
Glyph *gp, *last;
if(sel.ob.x == -1)
@@ -957,16 +953,14 @@ getsel(void) {
lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
}
last = &term.line[y][MIN(lastx, linelen-1)];
- while(last >= gp && last->c[0] == ' ')
+ while(last >= gp && last->u == ' ')
--last;
for( ; gp <= last; ++gp) {
if(gp->mode & ATTR_WDUMMY)
continue;
- size = utf8len(gp->c);
- memcpy(ptr, gp->c, size);
- ptr += size;
+ ptr += utf8encode(gp->u, ptr);
}
/*
@@ -1643,17 +1637,17 @@ tsetchar(char *c, Glyph *attr, int x, int y) {
if(term.line[y][x].mode & ATTR_WIDE) {
if(x+1 < term.col) {
- term.line[y][x+1].c[0] = ' ';
+ term.line[y][x+1].u = ' ';
term.line[y][x+1].mode &= ~ATTR_WDUMMY;
}
} else if(term.line[y][x].mode & ATTR_WDUMMY) {
- term.line[y][x-1].c[0] = ' ';
+ term.line[y][x-1].u = ' ';
term.line[y][x-1].mode &= ~ATTR_WIDE;
}
term.dirty[y] = 1;
term.line[y][x] = *attr;
- memcpy(term.line[y][x].c, c, UTF_SIZ);
+ utf8decode(c, &term.line[y][x].u, UTF_SIZ);
}
void
@@ -1680,7 +1674,7 @@ tclearregion(int x1, int y1, int x2, int y2) {
gp->fg = term.c.attr.fg;
gp->bg = term.c.attr.bg;
gp->mode = 0;
- memcpy(gp->c, " ", 2);
+ gp->u = ' ';
}
}
}
@@ -2400,13 +2394,14 @@ tdumpsel(void) {
void
tdumpline(int n) {
+ char buf[UTF_SIZ];
Glyph *bp, *end;
bp = &term.line[n][0];
end = &bp[MIN(tlinelen(n), term.col) - 1];
- if(bp != end || bp->c[0] != ' ') {
+ if(bp != end || bp->u != ' ') {
for( ;bp <= end; ++bp)
- tprinter(bp->c, utf8len(bp->c));
+ tprinter(buf, utf8encode(bp->u, buf));
}
tprinter("\n", 1);
}
@@ -2789,7 +2784,7 @@ tputc(char *c, int len) {
if(width == 2) {
gp->mode |= ATTR_WIDE;
if(term.c.x+1 < term.col) {
- gp[1].c[0] = '\0';
+ gp[1].u = '\0';
gp[1].mode = ATTR_WDUMMY;
}
}
@@ -3553,10 +3548,19 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
}
void
+xdrawglyph(Glyph g, int x, int y) {
+ static char buf[UTF_SIZ];
+ size_t len = utf8encode(g.u, buf);
+ int width = g.mode & ATTR_WIDE ? 2 : 1;
+
+ xdraws(buf, g, x, y, width, len);
+}
+
+void
xdrawcursor(void) {
static int oldx = 0, oldy = 0;
- int sl, width, curx;
- Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
+ int curx;
+ Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
LIMIT(oldx, 0, term.col-1);
LIMIT(oldy, 0, term.row-1);
@@ -3569,13 +3573,10 @@ xdrawcursor(void) {
if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
curx--;
- memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
+ g.u = term.line[term.c.y][term.c.x].u;
/* remove the old cursor */
- sl = utf8len(term.line[oldy][oldx].c);
- width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
- xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
- oldy, width, sl);
+ xdrawglyph(term.line[oldy][oldx], oldx, oldy);
if(IS_SET(MODE_HIDE))
return;
@@ -3592,10 +3593,8 @@ xdrawcursor(void) {
g.bg = defaultfg;
}
- sl = utf8len(g.c);
- width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
- ? 2 : 1;
- xdraws(g.c, g, term.c.x, term.c.y, width, sl);
+ g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
+ xdrawglyph(g, term.c.x, term.c.y);
break;
case 3: /* Blinking Underline */
case 4: /* Steady Underline */
@@ -3668,7 +3667,7 @@ draw(void) {
void
drawregion(int x1, int y1, int x2, int y2) {
- int ic, ib, x, y, ox, sl;
+ int ic, ib, x, y, ox;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
@@ -3700,9 +3699,7 @@ drawregion(int x1, int y1, int x2, int y2) {
base = new;
}
- sl = utf8len(new.c);
- memcpy(buf+ib, new.c, sl);
- ib += sl;
+ ib += utf8encode(new.u, buf+ib);
ic += (new.mode & ATTR_WIDE)? 2 : 1;
}
if(ib > 0)