st 0.9 source code

This commit is contained in:
q3aql 2022-11-20 23:51:37 +01:00
parent d71cd9d4a7
commit ce0cbe1aa8
10 changed files with 140 additions and 121 deletions

3
FAQ
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@ -248,3 +248,6 @@ fonts:
Please don't bother reporting this bug to st, but notify the upstream Xft Please don't bother reporting this bug to st, but notify the upstream Xft
developers about fixing this bug. developers about fixing this bug.
As of 2022-09-05 this now seems to be finally fixed in libXft 2.3.5:
https://gitlab.freedesktop.org/xorg/lib/libxft/-/blob/libXft-2.3.5/NEWS

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@ -1,6 +1,6 @@
MIT/X Consortium License MIT/X Consortium License
© 2014-2020 Hiltjo Posthuma <hiltjo at codemadness dot org> © 2014-2022 Hiltjo Posthuma <hiltjo at codemadness dot org>
© 2018 Devin J. Pohly <djpohly at gmail dot com> © 2018 Devin J. Pohly <djpohly at gmail dot com>
© 2014-2017 Quentin Rameau <quinq at fifth dot space> © 2014-2017 Quentin Rameau <quinq at fifth dot space>
© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com> © 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>

34
README Normal file
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@ -0,0 +1,34 @@
st - simple terminal
--------------------
st is a simple terminal emulator for X which sucks less.
Requirements
------------
In order to build st you need the Xlib header files.
Installation
------------
Edit config.mk to match your local setup (st is installed into
the /usr/local namespace by default).
Afterwards enter the following command to build and install st (if
necessary as root):
make clean install
Running st
----------
If you did not install st with make clean install, you must compile
the st terminfo entry with the following command:
tic -sx st.info
See the man page for additional details.
Credits
-------
Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.

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@ -155,8 +155,8 @@ static Rune stcursor = 0x2603; /* snowman ("☃") */
* Default columns and rows numbers * Default columns and rows numbers
*/ */
static unsigned int cols = 123; static unsigned int cols = 80;
static unsigned int rows = 33; static unsigned int rows = 24;
/* /*
* Default colour and shape of the mouse cursor * Default colour and shape of the mouse cursor

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@ -155,8 +155,8 @@ static Rune stcursor = 0x2603; /* snowman ("☃") */
* Default columns and rows numbers * Default columns and rows numbers
*/ */
static unsigned int cols = 123; static unsigned int cols = 80;
static unsigned int rows = 33; static unsigned int rows = 24;
/* /*
* Default colour and shape of the mouse cursor * Default colour and shape of the mouse cursor

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@ -1,5 +1,5 @@
# st version # st version
VERSION = 0.8.5 VERSION = 0.9
# Customize below to fit your system # Customize below to fit your system
@ -30,6 +30,7 @@ STLDFLAGS = $(LIBS) $(LDFLAGS)
#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \ #LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
# `$(PKG_CONFIG) --libs fontconfig` \ # `$(PKG_CONFIG) --libs fontconfig` \
# `$(PKG_CONFIG) --libs freetype2` # `$(PKG_CONFIG) --libs freetype2`
#MANPREFIX = ${PREFIX}/man
# compiler and linker # compiler and linker
# CC = c99 # CC = c99

118
st.c
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@ -169,6 +169,7 @@ static void csidump(void);
static void csihandle(void); static void csihandle(void);
static void csiparse(void); static void csiparse(void);
static void csireset(void); static void csireset(void);
static void osc_color_response(int, int, int);
static int eschandle(uchar); static int eschandle(uchar);
static void strdump(void); static void strdump(void);
static void strhandle(void); static void strhandle(void);
@ -357,25 +358,10 @@ utf8validate(Rune *u, size_t i)
return i; return i;
} }
static const char base64_digits[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
char char
base64dec_getc(const char **src) base64dec_getc(const char **src)
{ {
while (**src && !isprint(**src)) while (**src && !isprint((unsigned char)**src))
(*src)++; (*src)++;
return **src ? *((*src)++) : '='; /* emulate padding if string ends */ return **src ? *((*src)++) : '='; /* emulate padding if string ends */
} }
@ -385,6 +371,13 @@ base64dec(const char *src)
{ {
size_t in_len = strlen(src); size_t in_len = strlen(src);
char *result, *dst; char *result, *dst;
static const char base64_digits[256] = {
[43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
0, 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0,
0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
};
if (in_len % 4) if (in_len % 4)
in_len += 4 - (in_len % 4); in_len += 4 - (in_len % 4);
@ -957,7 +950,7 @@ ttyresize(int tw, int th)
} }
void void
ttyhangup() ttyhangup(void)
{ {
/* Send SIGHUP to shell */ /* Send SIGHUP to shell */
kill(pid, SIGHUP); kill(pid, SIGHUP);
@ -1906,39 +1899,28 @@ csireset(void)
} }
void void
osc4_color_response(int num) osc_color_response(int num, int index, int is_osc4)
{ {
int n; int n;
char buf[32]; char buf[32];
unsigned char r, g, b; unsigned char r, g, b;
if (xgetcolor(num, &r, &g, &b)) { if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) {
fprintf(stderr, "erresc: failed to fetch osc4 color %d\n", num); fprintf(stderr, "erresc: failed to fetch %s color %d\n",
is_osc4 ? "osc4" : "osc",
is_osc4 ? num : index);
return; return;
} }
n = snprintf(buf, sizeof buf, "\033]4;%d;rgb:%02x%02x/%02x%02x/%02x%02x\007", n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
num, r, r, g, g, b, b); is_osc4 ? "4;" : "", num, r, r, g, g, b, b);
if (n < 0 || n >= sizeof(buf)) {
ttywrite(buf, n, 1); fprintf(stderr, "error: %s while printing %s response\n",
} n < 0 ? "snprintf failed" : "truncation occurred",
is_osc4 ? "osc4" : "osc");
void } else {
osc_color_response(int index, int num) ttywrite(buf, n, 1);
{
int n;
char buf[32];
unsigned char r, g, b;
if (xgetcolor(index, &r, &g, &b)) {
fprintf(stderr, "erresc: failed to fetch osc color %d\n", index);
return;
} }
n = snprintf(buf, sizeof buf, "\033]%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
num, r, r, g, g, b, b);
ttywrite(buf, n, 1);
} }
void void
@ -1946,6 +1928,11 @@ strhandle(void)
{ {
char *p = NULL, *dec; char *p = NULL, *dec;
int j, narg, par; int j, narg, par;
const struct { int idx; char *str; } osc_table[] = {
{ defaultfg, "foreground" },
{ defaultbg, "background" },
{ defaultcs, "cursor" }
};
term.esc &= ~(ESC_STR_END|ESC_STR); term.esc &= ~(ESC_STR_END|ESC_STR);
strparse(); strparse();
@ -1980,43 +1967,22 @@ strhandle(void)
} }
return; return;
case 10: case 10:
if (narg < 2)
break;
p = strescseq.args[1];
if (!strcmp(p, "?"))
osc_color_response(defaultfg, 10);
else if (xsetcolorname(defaultfg, p))
fprintf(stderr, "erresc: invalid foreground color: %s\n", p);
else
redraw();
return;
case 11: case 11:
if (narg < 2)
break;
p = strescseq.args[1];
if (!strcmp(p, "?"))
osc_color_response(defaultbg, 11);
else if (xsetcolorname(defaultbg, p))
fprintf(stderr, "erresc: invalid background color: %s\n", p);
else
redraw();
return;
case 12: case 12:
if (narg < 2) if (narg < 2)
break; break;
p = strescseq.args[1]; p = strescseq.args[1];
if ((j = par - 10) < 0 || j >= LEN(osc_table))
break; /* shouldn't be possible */
if (!strcmp(p, "?")) if (!strcmp(p, "?")) {
osc_color_response(defaultcs, 12); osc_color_response(par, osc_table[j].idx, 0);
else if (xsetcolorname(defaultcs, p)) } else if (xsetcolorname(osc_table[j].idx, p)) {
fprintf(stderr, "erresc: invalid cursor color: %s\n", p); fprintf(stderr, "erresc: invalid %s color: %s\n",
else osc_table[j].str, p);
redraw(); } else {
tfulldirt();
}
return; return;
case 4: /* color set */ case 4: /* color set */
if (narg < 3) if (narg < 3)
@ -2026,9 +1992,9 @@ strhandle(void)
case 104: /* color reset */ case 104: /* color reset */
j = (narg > 1) ? atoi(strescseq.args[1]) : -1; j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
if (p && !strcmp(p, "?")) if (p && !strcmp(p, "?")) {
osc4_color_response(j); osc_color_response(j, 0, 1);
else if (xsetcolorname(j, p)) { } else if (xsetcolorname(j, p)) {
if (par == 104 && narg <= 1) if (par == 104 && narg <= 1)
return; /* color reset without parameter */ return; /* color reset without parameter */
fprintf(stderr, "erresc: invalid color j=%d, p=%s\n", fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
@ -2038,7 +2004,7 @@ strhandle(void)
* TODO if defaultbg color is changed, borders * TODO if defaultbg color is changed, borders
* are dirty * are dirty
*/ */
redraw(); tfulldirt();
} }
return; return;
} }

2
st.h
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@ -115,8 +115,6 @@ void *xmalloc(size_t);
void *xrealloc(void *, size_t); void *xrealloc(void *, size_t);
char *xstrdup(const char *); char *xstrdup(const char *);
int xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b);
/* config.h globals */ /* config.h globals */
extern char *utmp; extern char *utmp;
extern char *scroll; extern char *scroll;

1
win.h
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@ -30,6 +30,7 @@ void xdrawline(Line, int, int, int);
void xfinishdraw(void); void xfinishdraw(void);
void xloadcols(void); void xloadcols(void);
int xsetcolorname(int, const char *); int xsetcolorname(int, const char *);
int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *);
void xseticontitle(char *); void xseticontitle(char *);
void xsettitle(char *); void xsettitle(char *);
int xsetcursor(int); int xsetcursor(int);

90
x.c
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@ -253,7 +253,7 @@ static char *opt_line = NULL;
static char *opt_name = NULL; static char *opt_name = NULL;
static char *opt_title = NULL; static char *opt_title = NULL;
static int oldbutton = 3; /* button event on startup: 3 = release */ static uint buttons; /* bit field of pressed buttons */
static int cursorblinks = 0; static int cursorblinks = 0;
void void
@ -366,61 +366,68 @@ mousesel(XEvent *e, int done)
void void
mousereport(XEvent *e) mousereport(XEvent *e)
{ {
int len, x = evcol(e), y = evrow(e), int len, btn, code;
button = e->xbutton.button, state = e->xbutton.state; int x = evcol(e), y = evrow(e);
int state = e->xbutton.state;
char buf[40]; char buf[40];
static int ox, oy; static int ox, oy;
/* from urxvt */ if (e->type == MotionNotify) {
if (e->xbutton.type == MotionNotify) {
if (x == ox && y == oy) if (x == ox && y == oy)
return; return;
if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY)) if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
return; return;
/* MOUSE_MOTION: no reporting if no button is pressed */ /* MODE_MOUSEMOTION: no reporting if no button is pressed */
if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3) if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
return; return;
/* Set btn to lowest-numbered pressed button, or 12 if no
button = oldbutton + 32; * buttons are pressed. */
ox = x; for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
oy = y; ;
code = 32;
} else { } else {
if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) { btn = e->xbutton.button;
button = 3; /* Only buttons 1 through 11 can be encoded */
} else { if (btn < 1 || btn > 11)
button -= Button1; return;
if (button >= 7) if (e->type == ButtonRelease) {
button += 128 - 7;
else if (button >= 3)
button += 64 - 3;
}
if (e->xbutton.type == ButtonPress) {
oldbutton = button;
ox = x;
oy = y;
} else if (e->xbutton.type == ButtonRelease) {
oldbutton = 3;
/* MODE_MOUSEX10: no button release reporting */ /* MODE_MOUSEX10: no button release reporting */
if (IS_SET(MODE_MOUSEX10)) if (IS_SET(MODE_MOUSEX10))
return; return;
if (button == 64 || button == 65) /* Don't send release events for the scroll wheel */
if (btn == 4 || btn == 5)
return; return;
} }
code = 0;
} }
ox = x;
oy = y;
/* Encode btn into code. If no button is pressed for a motion event in
* MODE_MOUSEMANY, then encode it as a release. */
if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
code += 3;
else if (btn >= 8)
code += 128 + btn - 8;
else if (btn >= 4)
code += 64 + btn - 4;
else
code += btn - 1;
if (!IS_SET(MODE_MOUSEX10)) { if (!IS_SET(MODE_MOUSEX10)) {
button += ((state & ShiftMask ) ? 4 : 0) code += ((state & ShiftMask ) ? 4 : 0)
+ ((state & Mod4Mask ) ? 8 : 0) + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
+ ((state & ControlMask) ? 16 : 0); + ((state & ControlMask) ? 16 : 0);
} }
if (IS_SET(MODE_MOUSESGR)) { if (IS_SET(MODE_MOUSESGR)) {
len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c", len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
button, x+1, y+1, code, x+1, y+1,
e->xbutton.type == ButtonRelease ? 'm' : 'M'); e->type == ButtonRelease ? 'm' : 'M');
} else if (x < 223 && y < 223) { } else if (x < 223 && y < 223) {
len = snprintf(buf, sizeof(buf), "\033[M%c%c%c", len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
32+button, 32+x+1, 32+y+1); 32+code, 32+x+1, 32+y+1);
} else { } else {
return; return;
} }
@ -463,9 +470,13 @@ mouseaction(XEvent *e, uint release)
void void
bpress(XEvent *e) bpress(XEvent *e)
{ {
int btn = e->xbutton.button;
struct timespec now; struct timespec now;
int snap; int snap;
if (1 <= btn && btn <= 11)
buttons |= 1 << (btn-1);
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) { if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e); mousereport(e);
return; return;
@ -474,7 +485,7 @@ bpress(XEvent *e)
if (mouseaction(e, 0)) if (mouseaction(e, 0))
return; return;
if (e->xbutton.button == Button1) { if (btn == Button1) {
/* /*
* If the user clicks below predefined timeouts specific * If the user clicks below predefined timeouts specific
* snapping behaviour is exposed. * snapping behaviour is exposed.
@ -688,6 +699,11 @@ xsetsel(char *str)
void void
brelease(XEvent *e) brelease(XEvent *e)
{ {
int btn = e->xbutton.button;
if (1 <= btn && btn <= 11)
buttons &= ~(1 << (btn-1));
if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) { if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
mousereport(e); mousereport(e);
return; return;
@ -695,7 +711,7 @@ brelease(XEvent *e)
if (mouseaction(e, 1)) if (mouseaction(e, 1))
return; return;
if (e->xbutton.button == Button1) if (btn == Button1)
mousesel(e, 1); mousesel(e, 1);
} }
@ -1479,12 +1495,12 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
/* Render underline and strikethrough. */ /* Render underline and strikethrough. */
if (base.mode & ATTR_UNDERLINE) { if (base.mode & ATTR_UNDERLINE) {
XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1, XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
width, 1); width, 1);
} }
if (base.mode & ATTR_STRUCK) { if (base.mode & ATTR_STRUCK) {
XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3, XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
width, 1); width, 1);
} }