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utf8 support! print text in delicious unicode greatness! all hail to the glorious Damian Okrasa for the patch!

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TERM set back to xterm.
changed default fonts.
Note: drawing is now (even) slower.
This commit is contained in:
Aurélien Aptel
2010-11-18 01:00:04 +01:00
parent d581bfccd7
commit 9b74fcadc4
2 changed files with 260 additions and 91 deletions
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29
config.def.h
View File

@@ -1,7 +1,7 @@
#define TAB 8
#define TNAME "st-256color"
#define FONT "-misc-*-medium-r-semicondensed-*-13-*-*-*-*-*-iso8859-*"
#define BOLDFONT "-misc-*-bold-r-semicondensed-*-13-*-*-*-*-*-iso8859-*"
#define TNAME "xterm"
#define FONT "-*-*-medium-r-*-*-*-120-75-75-*-60-*-*"
#define BOLDFONT "-*-*-bold-r-*-*-*-120-75-75-*-60-*-*"
#define BORDER 2
#define SHELL "/bin/sh"
@@ -55,31 +55,8 @@ static Key key[] = {
/* Line drawing characters (sometime specific to each font...) */
static char gfx[] = {
['`'] = 0x01,
['a'] = 0x02,
['f'] = 'o',
['g'] = '+',
['i'] = '#',
['j'] = 0x0B,
['k'] = 0x0C,
['l'] = 0x0D,
['m'] = 0x0E,
['n'] = 0x0F,
['o'] = 0x10,
['p'] = 0x11,
['q'] = 0x12,
['r'] = 0x13,
['s'] = 0x14,
['t'] = 0x15,
['u'] = 0x16,
['v'] = 0x17,
['w'] = 0x18,
['x'] = 0x19,
['y'] = 0x1A,
['z'] = 0x1B,
['{'] = 0x1C,
['|'] = 0x1D,
['}'] = 0x1E,
['~'] = 0x1F,
[255] = 0,
};

318
st.c
View File

@@ -38,6 +38,7 @@
#define ESC_BUF_SIZ 256
#define ESC_ARG_SIZ 16
#define DRAW_BUF_SIZ 1024
#define UTF_SIZ 4
#define SERRNO strerror(errno)
#define MIN(a, b) ((a) < (b) ? (a) : (b))
@@ -61,8 +62,11 @@ enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
enum { SCREEN_UPDATE, SCREEN_REDRAW };
enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
#undef B0
enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
typedef struct {
char c; /* character code */
char c[UTF_SIZ]; /* character code */
char mode; /* attribute flags */
int fg; /* foreground */
int bg; /* background */
@@ -127,11 +131,19 @@ typedef struct {
char s[ESC_BUF_SIZ];
} Key;
typedef struct {
XFontSet fs;
short lbearing;
short rbearing;
int ascent;
int descent;
} FontInfo;
/* Drawing Context */
typedef struct {
unsigned long col[256];
XFontStruct* font;
XFontStruct* bfont;
FontInfo font;
FontInfo bfont;
GC gc;
} DC;
@@ -167,14 +179,13 @@ static void tmoveto(int, int);
static void tnew(int, int);
static void tnewline(int);
static void tputtab(void);
static void tputc(char);
static void tputs(char*, int);
static void tputc(char*);
static void treset(void);
static int tresize(int, int);
static void tscrollup(int, int);
static void tscrolldown(int, int);
static void tsetattr(int*, int);
static void tsetchar(char);
static void tsetchar(char*);
static void tsetscroll(int, int);
static void tswapscreen(void);
@@ -183,7 +194,7 @@ static void ttyread(void);
static void ttyresize(int, int);
static void ttywrite(const char *, size_t);
static void xdraws(char *, Glyph, int, int, int);
static void xdraws(char *, Glyph, int, int, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
static void xdrawcursor(void);
@@ -205,6 +216,11 @@ static void bmotion(XEvent *);
static void selection_notify(XEvent *);
static void selection_request(XEvent *);
static int stou(char *, long *);
static int utos(long *, char *);
static int slen(char *);
static int canstou(char *, int);
static void (*handler[LASTEvent])(XEvent *) = {
[KeyPress] = kpress,
[ConfigureNotify] = resize,
@@ -231,6 +247,133 @@ static Selection sel;
static char *opt_cmd = NULL;
static char *opt_title = NULL;
/* UTF-8 decode */
static int
stou(char *s, long *u)
{
unsigned char c;
int i, n, rtn;
rtn = 1;
c = *s;
if(~c&B7) { /* 0xxxxxxx */
*u = c;
return rtn;
} else if ((c&(B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
*u = c&(B4|B3|B2|B1|B0);
n = 1;
} else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
*u = c&(B3|B2|B1|B0);
n = 2;
} else if ((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
*u = c&(B2|B1|B0);
n = 3;
} else
goto invalid;
for (i=n,++s; i>0; --i,++rtn,++s) {
c = *s;
if ((c&(B7|B6)) != B7) /* 10xxxxxx */
goto invalid;
*u <<= 6;
*u |= c&(B5|B4|B3|B2|B1|B0);
}
if ((n == 1 && *u < 0x80) ||
(n == 2 && *u < 0x800) ||
(n == 3 && *u < 0x10000) ||
(*u >= 0xD800 && *u <= 0xDFFF))
goto invalid;
return rtn;
invalid:
*u = 0xFFFD;
return rtn;
}
/* UTF-8 encode */
static int
utos(long *u, char *s)
{
unsigned char *sp;
unsigned long uc;
int i, n;
sp = (unsigned char*) s;
uc = *u;
if (uc < 0x80) {
*sp = uc; /* 0xxxxxxx */
return 1;
} else if (*u < 0x800) {
*sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
n = 1;
} else if (uc < 0x10000) {
*sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
n = 2;
} else if (uc <= 0x10FFFF) {
*sp = (uc >> 18) | (B7|B6|B5|B4); /* 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 */
return n+1;
invalid:
/* U+FFFD */
*s++ = '\xEF';
*s++ = '\xBF';
*s = '\xBD';
return 3;
}
/*
* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode UTF-8
* otherwise return 0
*/
static int
canstou(char *s, int b)
{
unsigned char c;
int n;
c = *s;
if (b < 1)
return 0;
else if (~c&B7)
return 1;
else if ((c&(B7|B6|B5)) == (B7|B6))
n = 1;
else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
n = 2;
else if ((c&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4))
n = 3;
else
return 1;
for (--b,++s; n>0&&b>0; --n,--b,++s) {
c = *s;
if ((c&(B7|B6)) != B7)
break;
}
if (n > 0 && b == 0)
return 0;
else
return 1;
}
static int
slen(char *s)
{
unsigned char c;
c = *s;
if (~c&B7)
return 1;
else if ((c&(B7|B6|B5)) == (B7|B6))
return 2;
else if ((c&(B7|B6|B5|B4)) == (B7|B6|B5))
return 3;
else
return 4;
}
void
selinit(void) {
sel.mode = 0;
@@ -268,15 +411,18 @@ static void bpress(XEvent *e) {
static char *getseltext() {
char *str, *ptr;
int ls, x, y, sz;
int ls, x, y, sz, sl;
if(sel.bx == -1)
return NULL;
sz = (term.col+1) * (sel.e.y-sel.b.y+1);
sz = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
ptr = str = malloc(sz);
for(y = 0; y < term.row; y++) {
for(x = 0; x < term.col; x++)
if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
*ptr = term.line[y][x].c, ptr++;
if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y))) {
sl = slen(term.line[y][x].c);
memcpy(ptr, term.line[y][x].c, sl);
ptr += sl;
}
if(ls)
*ptr = '\n', ptr++;
}
@@ -476,13 +622,24 @@ dump(char c) {
void
ttyread(void) {
char buf[BUFSIZ];
int ret;
char buf[BUFSIZ], *ptr;
char s[UTF_SIZ];
int ret, br;
static int buflen = 0;
long u;
if((ret = read(cmdfd, buf, LEN(buf))) < 0)
if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
die("Couldn't read from shell: %s\n", SERRNO);
else
tputs(buf, ret);
else {
buflen += ret;
for(ptr=buf; buflen>=UTF_SIZ||canstou(ptr,buflen); buflen-=br) {
br = stou(ptr, &u);
utos(&u, s);
tputc(s);
ptr += br;
}
memcpy(buf, ptr, buflen);
}
}
void
@@ -622,9 +779,9 @@ tmoveto(int x, int y) {
}
void
tsetchar(char c) {
tsetchar(char *c) {
term.line[term.c.y][term.c.x] = term.c.attr;
term.line[term.c.y][term.c.x].c = c;
memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
term.line[term.c.y][term.c.x].state |= GLYPH_SET;
}
@@ -1025,30 +1182,31 @@ tputtab(void) {
}
void
tputc(char c) {
tputc(char *c) {
char ascii = *c;
if(term.esc & ESC_START) {
if(term.esc & ESC_CSI) {
escseq.buf[escseq.len++] = c;
if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
escseq.buf[escseq.len++] = ascii;
if(BETWEEN(ascii, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
term.esc = 0;
csiparse(), csihandle();
}
/* TODO: handle other OSC */
} else if(term.esc & ESC_OSC) {
if(c == ';') {
if(ascii == ';') {
term.titlelen = 0;
term.esc = ESC_START | ESC_TITLE;
}
} else if(term.esc & ESC_TITLE) {
if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
if(ascii == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
term.esc = 0;
term.title[term.titlelen] = '\0';
XStoreName(xw.dis, xw.win, term.title);
} else {
term.title[term.titlelen++] = c;
term.title[term.titlelen++] = ascii;
}
} else if(term.esc & ESC_ALTCHARSET) {
switch(c) {
switch(ascii) {
case '0': /* Line drawing crap */
term.c.attr.mode |= ATTR_GFX;
break;
@@ -1056,11 +1214,11 @@ tputc(char c) {
term.c.attr.mode &= ~ATTR_GFX;
break;
default:
printf("esc unhandled charset: ESC ( %c\n", c);
printf("esc unhandled charset: ESC ( %c\n", ascii);
}
term.esc = 0;
} else {
switch(c) {
switch(ascii) {
case '[':
term.esc |= ESC_CSI;
break;
@@ -1109,12 +1267,13 @@ tputc(char c) {
term.esc = 0;
break;
default:
fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
(unsigned char) ascii, isprint(ascii)?ascii:'.');
term.esc = 0;
}
}
} else {
switch(c) {
switch(ascii) {
case '\t':
tputtab();
break;
@@ -1151,12 +1310,6 @@ tputc(char c) {
}
}
void
tputs(char *s, int len) {
for(; len > 0; len--)
tputc(*s++);
}
int
tresize(int col, int row) {
int i, x;
@@ -1308,21 +1461,53 @@ xhints(void)
XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
}
void
xsetfontinfo(FontInfo *fi)
{
XFontStruct **xfonts;
int fnum;
int i;
char **fontnames;
fi->lbearing = 0;
fi->rbearing = 0;
fi->ascent = 0;
fi->descent = 0;
fnum = XFontsOfFontSet(fi->fs, &xfonts, &fontnames);
for(i=0; i<fnum; i++,xfonts++,fontnames++) {
puts(*fontnames);
if(fi->ascent < (*xfonts)->ascent)
fi->ascent = (*xfonts)->ascent;
if(fi->descent < (*xfonts)->descent)
fi->descent = (*xfonts)->descent;
if(fi->rbearing < (*xfonts)->max_bounds.rbearing)
fi->rbearing = (*xfonts)->max_bounds.rbearing;
if(fi->lbearing < (*xfonts)->min_bounds.lbearing)
fi->lbearing = (*xfonts)->min_bounds.lbearing;
}
}
void
xinit(void) {
XSetWindowAttributes attrs;
char **mc;
char *ds;
int nmc;
if(!(xw.dis = XOpenDisplay(NULL)))
die("Can't open display\n");
xw.scr = XDefaultScreen(xw.dis);
/* font */
if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
if ((dc.font.fs = XCreateFontSet(xw.dis, FONT, &mc, &nmc, &ds)) == NULL ||
(dc.bfont.fs = XCreateFontSet(xw.dis, BOLDFONT, &mc, &nmc, &ds)) == NULL)
die("Can't load font %s\n", dc.font.fs ? BOLDFONT : FONT);
xsetfontinfo(&dc.font);
xsetfontinfo(&dc.bfont);
/* XXX: Assuming same size for bold font */
xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
xw.ch = dc.font->ascent + dc.font->descent;
xw.cw = dc.font.rbearing - dc.font.lbearing;
xw.ch = dc.font.ascent + dc.font.descent;
/* colors */
xw.cmap = XDefaultColormap(xw.dis, xw.scr);
@@ -1366,9 +1551,9 @@ xinit(void) {
}
void
xdraws(char *s, Glyph base, int x, int y, int len) {
xdraws(char *s, Glyph base, int x, int y, int cl, int sl) {
unsigned long xfg, xbg;
int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = cl*xw.cw;
int i;
if(base.mode & ATTR_REVERSE)
@@ -1380,7 +1565,7 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
XSetForeground(xw.dis, dc.gc, xfg);
if(base.mode & ATTR_GFX)
for(i = 0; i < len; i++) {
for(i = 0; i < cl; i++) {
char c = gfx[(unsigned int)s[i] % 256];
if(c)
s[i] = c;
@@ -1388,8 +1573,8 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
s[i] -= 0x5f;
}
XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
XmbDrawImageString(xw.dis, xw.buf, base.mode & ATTR_BOLD ? dc.bfont.fs : dc.font.fs,
dc.gc, winx, winy, s, sl);
if(base.mode & ATTR_UNDERLINE)
XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
@@ -1399,23 +1584,26 @@ void
xdrawcursor(void) {
static int oldx = 0;
static int oldy = 0;
Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
int sl;
Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
LIMIT(oldx, 0, term.col-1);
LIMIT(oldy, 0, term.row-1);
if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
g.c = term.line[term.c.y][term.c.x].c;
memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
/* remove the old cursor */
if(term.line[oldy][oldx].state & GLYPH_SET)
xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
else
if(term.line[oldy][oldx].state & GLYPH_SET) {
sl = slen(term.line[oldy][oldx].c);
xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
} else
xclear(oldx, oldy, oldx, oldy);
/* draw the new one */
if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
xdraws(&g.c, g, term.c.x, term.c.y, 1);
sl = slen(g.c);
xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
oldx = term.c.x, oldy = term.c.y;
}
}
@@ -1424,11 +1612,12 @@ xdrawcursor(void) {
/* basic drawing routines */
void
xdrawc(int x, int y, Glyph g) {
int sl = slen(g.c);
XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
XmbDrawImageString(xw.dis, xw.buf, g.mode&ATTR_BOLD?dc.bfont.fs:dc.font.fs,
dc.gc, r.x, r.y+dc.font.ascent, g.c, sl);
}
void
@@ -1450,7 +1639,7 @@ draw(int dummy) {
/* optimized drawing routine */
void
draw(int redraw_all) {
int i, x, y, ox;
int ic, ib, x, y, ox, sl;
Glyph base, new;
char buf[DRAW_BUF_SIZ];
@@ -1460,26 +1649,29 @@ draw(int redraw_all) {
xclear(0, 0, term.col-1, term.row-1);
for(y = 0; y < term.row; y++) {
base = term.line[y][0];
i = ox = 0;
ic = ib = ox = 0;
for(x = 0; x < term.col; x++) {
new = term.line[y][x];
if(sel.bx!=-1 && new.c && selected(x, y))
if(sel.bx!=-1 && *(new.c) && selected(x, y))
new.mode ^= ATTR_REVERSE;
if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
i >= DRAW_BUF_SIZ)) {
xdraws(buf, base, ox, y, i);
i = 0;
if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
xdraws(buf, base, ox, y, ic, ib);
ic = ib = 0;
}
if(new.state & GLYPH_SET) {
if(i == 0) {
if(ib == 0) {
ox = x;
base = new;
}
buf[i++] = new.c;
sl = slen(new.c);
memcpy(buf+ib, new.c, sl);
ib += sl;
++ic;
}
}
if(i > 0)
xdraws(buf, base, ox, y, i);
if(ib > 0)
xdraws(buf, base, ox, y, ic, ib);
}
xdrawcursor();
XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);