alrayyes/st
1
0
Fork 0
mirror of https://github.com/alrayyes/st synced 2023-11-14 15:56:30 +00:00
Code Issues Releases Wiki Activity

Change internal character representation.

Browse Source
This commit is contained in:
noname@inventati.org 2015-04-21 23:29:01 +02:00 committed by Roberto E. Vargas Caballero
parent 753fe862b1
commit 21f765426c
1 changed files with 35 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
st.c
View File

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