Change internal character representation.
noname@inventati.org
Roberto E. Vargas Caballero
parent
753fe862b1
commit
21f765426c
73
st.c
73
st.c
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@ -72,6 +72,7 @@ char *argv0;
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#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
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#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
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#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
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#define ISDELIM(u) (BETWEEN(u, 0, 127) && strchr(worddelimiters, u) != NULL)
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
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#define IS_SET(flag) ((term.mode & (flag)) != 0)
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@ -180,7 +181,7 @@ typedef XftDraw *Draw;
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typedef XftColor Color;
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typedef struct {
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char c[UTF_SIZ]; /* character code */
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long u; /* character code */
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ushort mode; /* attribute flags */
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uint32_t fg; /* foreground */
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uint32_t bg; /* background */
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@ -410,6 +411,7 @@ static void tstrsequence(uchar);
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static inline ushort sixd_to_16bit(int);
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static void xdraws(char *, Glyph, int, int, int, int);
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static void xdrawglyph(Glyph, int, int);
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static void xhints(void);
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static void xclear(int, int, int, int);
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static void xdrawcursor(void);
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@ -461,7 +463,6 @@ static size_t utf8decode(char *, long *, size_t);
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static long utf8decodebyte(char, size_t *);
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static size_t utf8encode(long, char *);
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static char utf8encodebyte(long, size_t);
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static size_t utf8len(char *);
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static size_t utf8validate(long *, size_t);
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static ssize_t xwrite(int, const char *, size_t);
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@ -629,11 +630,6 @@ utf8encodebyte(long u, size_t i) {
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return utfbyte[i] | (u & ~utfmask[i]);
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}
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size_t
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utf8len(char *c) {
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return utf8decode(c, &(long){0}, UTF_SIZ);
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}
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size_t
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utf8validate(long *u, size_t i) {
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if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
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@ -679,7 +675,7 @@ tlinelen(int y) {
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if(term.line[y][i - 1].mode & ATTR_WRAP)
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return i;
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while(i > 0 && term.line[y][i - 1].c[0] == ' ')
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while(i > 0 && term.line[y][i - 1].u == ' ')
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--i;
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return i;
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@ -736,7 +732,7 @@ selsnap(int mode, int *x, int *y, int direction) {
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* beginning of a line.
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*/
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prevgp = &term.line[*y][*x];
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prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL;
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prevdelim = ISDELIM(prevgp->u);
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for(;;) {
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newx = *x + direction;
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newy = *y;
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@ -758,9 +754,9 @@ selsnap(int mode, int *x, int *y, int direction) {
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break;
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gp = &term.line[newy][newx];
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delim = strchr(worddelimiters, gp->c[0]) != NULL;
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delim = ISDELIM(gp->u);
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if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
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|| (delim && gp->c[0] != prevgp->c[0])))
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|| (delim && gp->u != prevgp->u)))
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break;
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*x = newx;
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@ -936,7 +932,7 @@ bpress(XEvent *e) {
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char *
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getsel(void) {
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char *str, *ptr;
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int y, bufsize, size, lastx, linelen;
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int y, bufsize, lastx, linelen;
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Glyph *gp, *last;
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if(sel.ob.x == -1)
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@ -957,16 +953,14 @@ getsel(void) {
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lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
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}
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last = &term.line[y][MIN(lastx, linelen-1)];
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while(last >= gp && last->c[0] == ' ')
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while(last >= gp && last->u == ' ')
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--last;
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for( ; gp <= last; ++gp) {
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if(gp->mode & ATTR_WDUMMY)
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continue;
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size = utf8len(gp->c);
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memcpy(ptr, gp->c, size);
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ptr += size;
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ptr += utf8encode(gp->u, ptr);
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}
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/*
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@ -1643,17 +1637,17 @@ tsetchar(char *c, Glyph *attr, int x, int y) {
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if(term.line[y][x].mode & ATTR_WIDE) {
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if(x+1 < term.col) {
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term.line[y][x+1].c[0] = ' ';
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term.line[y][x+1].u = ' ';
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term.line[y][x+1].mode &= ~ATTR_WDUMMY;
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}
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} else if(term.line[y][x].mode & ATTR_WDUMMY) {
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term.line[y][x-1].c[0] = ' ';
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term.line[y][x-1].u = ' ';
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term.line[y][x-1].mode &= ~ATTR_WIDE;
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}
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term.dirty[y] = 1;
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term.line[y][x] = *attr;
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memcpy(term.line[y][x].c, c, UTF_SIZ);
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utf8decode(c, &term.line[y][x].u, UTF_SIZ);
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}
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void
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@ -1680,7 +1674,7 @@ tclearregion(int x1, int y1, int x2, int y2) {
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gp->fg = term.c.attr.fg;
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gp->bg = term.c.attr.bg;
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gp->mode = 0;
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memcpy(gp->c, " ", 2);
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gp->u = ' ';
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}
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}
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}
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@ -2400,13 +2394,14 @@ tdumpsel(void) {
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void
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tdumpline(int n) {
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char buf[UTF_SIZ];
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Glyph *bp, *end;
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bp = &term.line[n][0];
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end = &bp[MIN(tlinelen(n), term.col) - 1];
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if(bp != end || bp->c[0] != ' ') {
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if(bp != end || bp->u != ' ') {
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for( ;bp <= end; ++bp)
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tprinter(bp->c, utf8len(bp->c));
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tprinter(buf, utf8encode(bp->u, buf));
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}
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tprinter("\n", 1);
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}
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@ -2789,7 +2784,7 @@ tputc(char *c, int len) {
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if(width == 2) {
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gp->mode |= ATTR_WIDE;
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if(term.c.x+1 < term.col) {
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gp[1].c[0] = '\0';
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gp[1].u = '\0';
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gp[1].mode = ATTR_WDUMMY;
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}
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}
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@ -3552,11 +3547,20 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
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XftDrawSetClip(xw.draw, 0);
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}
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void
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xdrawglyph(Glyph g, int x, int y) {
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static char buf[UTF_SIZ];
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size_t len = utf8encode(g.u, buf);
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int width = g.mode & ATTR_WIDE ? 2 : 1;
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xdraws(buf, g, x, y, width, len);
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}
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void
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xdrawcursor(void) {
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static int oldx = 0, oldy = 0;
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int sl, width, curx;
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Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
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int curx;
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Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs};
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LIMIT(oldx, 0, term.col-1);
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LIMIT(oldy, 0, term.row-1);
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@ -3569,13 +3573,10 @@ xdrawcursor(void) {
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if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
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curx--;
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memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
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g.u = term.line[term.c.y][term.c.x].u;
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/* remove the old cursor */
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sl = utf8len(term.line[oldy][oldx].c);
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width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
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xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
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oldy, width, sl);
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xdrawglyph(term.line[oldy][oldx], oldx, oldy);
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if(IS_SET(MODE_HIDE))
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return;
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@ -3592,10 +3593,8 @@ xdrawcursor(void) {
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g.bg = defaultfg;
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}
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sl = utf8len(g.c);
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width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
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? 2 : 1;
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xdraws(g.c, g, term.c.x, term.c.y, width, sl);
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g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
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xdrawglyph(g, term.c.x, term.c.y);
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break;
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case 3: /* Blinking Underline */
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case 4: /* Steady Underline */
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@ -3668,7 +3667,7 @@ draw(void) {
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void
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drawregion(int x1, int y1, int x2, int y2) {
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int ic, ib, x, y, ox, sl;
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int ic, ib, x, y, ox;
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Glyph base, new;
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char buf[DRAW_BUF_SIZ];
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bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
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@ -3700,9 +3699,7 @@ drawregion(int x1, int y1, int x2, int y2) {
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base = new;
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}
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sl = utf8len(new.c);
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memcpy(buf+ib, new.c, sl);
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ib += sl;
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ib += utf8encode(new.u, buf+ib);
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ic += (new.mode & ATTR_WIDE)? 2 : 1;
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}
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if(ib > 0)
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