The attached patch adds full support for the OSC 10/11/12/4 control
sequences.
These are used by programs like vim and theme.sh to query and set terminal
colours and are supported by most major terminals (e.g alacrittty, kitty,
libvte). I submitted a patch to the wiki some time ago, but it didn't
include
support for query sequences. I am posting it here because I feel it would
be a
good candidate for inclusion into st itself.
You can test it using https://github.com/lemnos/theme.sh by running
theme.sh zenburn
theme.sh -p
Don't hesitate to let me know if I have made any grievous errors :P.
Regards,
Raheman
diff --git a/config.def.h b/config.def.h
index 6f05dce..3932e83 100644
--- a/config.def.h
+++ b/config.def.h
@@ -127,9 +127,9 @@ static const char *colorname[] = {
* Default colors (colorname index)
* foreground, background, cursor, reverse cursor
*/
-unsigned int defaultfg = 7;
-unsigned int defaultbg = 0;
-static unsigned int defaultcs = 256;
+unsigned int defaultfg = 255;
+unsigned int defaultbg = 254;
+unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257;
/*
diff --git a/st.c b/st.c
index a9338e1..a469512 100644
--- a/st.c
+++ b/st.c
@@ -1842,6 +1842,32 @@ csireset(void)
memset(&csiescseq, 0, sizeof(csiescseq));
}
+void
+osc4_color_response(int num)
+{
+ int n;
+ char buf[32];
+ unsigned char r,g,b;
+
+ xgetcolor(num, &r,&g,&b);
+ n = sprintf(buf, "\033]4;%d;rgb:%02x%02x/%02x%02x/%02x%02x\007", num, r, r, g, g, b, b);
+
+ ttywrite(buf, n, 1);
+}
+
+void
+osc_color_response(int index, int num)
+{
+ int n;
+ char buf[32];
+ unsigned char r,g,b;
+
+ xgetcolor(index, &r,&g,&b);
+ n = sprintf(buf, "\033]%d;rgb:%02x%02x/%02x%02x/%02x%02x\007", num, r, r, g, g, b, b);
+
+ ttywrite(buf, n, 1);
+}
+
void
strhandle(void)
{
@@ -1880,6 +1906,45 @@ strhandle(void)
}
}
return;
+ 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 %d\n", p);
+ else
+ redraw();
+ break;
+ case 12:
+ if (narg < 2)
+ break;
+
+ p = strescseq.args[1];
+
+ if(!strcmp(p, "?"))
+ osc_color_response(defaultcs, 12);
+ else if (xsetcolorname(defaultcs, p))
+ fprintf(stderr, "erresc: invalid cursor color %d\n", p);
+ else
+ redraw();
+ break;
+ 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 %d\n", p);
+ else
+ redraw();
+ break;
case 4: /* color set */
if (narg < 3)
break;
@@ -1887,7 +1952,10 @@ strhandle(void)
/* FALLTHROUGH */
case 104: /* color reset, here p = NULL */
j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
- if (xsetcolorname(j, p)) {
+
+ if(!strcmp(p, "?"))
+ osc4_color_response(j);
+ else if (xsetcolorname(j, p)) {
if (par == 104 && narg <= 1)
return; /* color reset without parameter */
fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
diff --git a/st.h b/st.h
index fa2eddf..47d76ca 100644
--- a/st.h
+++ b/st.h
@@ -107,6 +107,7 @@ char *getsel(void);
size_t utf8encode(Rune, char *);
+void xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b);
void *xmalloc(size_t);
void *xrealloc(void *, size_t);
char *xstrdup(const char *);
@@ -123,3 +124,4 @@ extern char *termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
+extern unsigned int defaultcs;
diff --git a/x.c b/x.c
index 89786b8..3761fd0 100644
--- a/x.c
+++ b/x.c
@@ -799,6 +799,14 @@ xloadcols(void)
loaded = 1;
}
+void
+xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+ *r = dc.col[x].color.red >> 8;
+ *g = dc.col[x].color.green >> 8;
+ *b = dc.col[x].color.blue >> 8;
+}
+
int
xsetcolorname(int x, const char *name)
{
