[hackers] [st][PATCH] Support xterm Ms feature to set clipboard

From: Omar Sandoval <osandov_AT_osandov.com>
Date: Sat, 18 Mar 2017 00:18:17 -0700

This is used by, e.g., tmux.

---
 st.c    | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 st.info |  1 +
 2 files changed, 58 insertions(+)
diff --git a/st.c b/st.c
index fbcd9e0..f3b8846 100644
--- a/st.c
+++ b/st.c
_AT_@ -491,6 +491,8 @@ static char utf8encodebyte(Rune, size_t);
 static char *utf8strchr(char *s, Rune u);
 static size_t utf8validate(Rune *, size_t);
 
+static char *base64dec(const char *);
+
 static ssize_t xwrite(int, const char *, size_t);
 static void *xmalloc(size_t);
 static void *xrealloc(void *, size_t);
_AT_@ -704,6 +706,48 @@ utf8validate(Rune *u, size_t 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 *
+base64dec(const char *src)
+{
+	size_t in_len = strlen(src);
+	char *result, *dst;
+
+	if (in_len % 4)
+		return NULL;
+	result = dst = xmalloc(in_len / 4 * 3 + 1);
+	while (*src) {
+		char a = base64_digits[(unsigned char)*(src++)];
+		char b = base64_digits[(unsigned char)*(src++)];
+		char c = base64_digits[(unsigned char)*(src++)];
+		char d = base64_digits[(unsigned char)*(src++)];
+
+		*(dst++) = (a << 2) | ((b & 0x30) >> 4);
+		if (c == (char)-1)
+			break;
+		*(dst++) = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+		if (d == (char)-1)
+			break;
+		*(dst++) = ((c & 0x03) << 6) | d;
+	}
+	*dst = '\0';
+	return result;
+}
+
 void
 selinit(void)
 {
_AT_@ -2533,6 +2577,19 @@ strhandle(void)
 			if (narg > 1)
 				xsettitle(strescseq.args[1]);
 			return;
+		case 52:
+			if (narg > 2) {
+				char *dec;
+
+				dec = base64dec(strescseq.args[2]);
+				if (dec) {
+					xsetsel(dec, CurrentTime);
+					clipcopy(NULL);
+				} else {
+					fprintf(stderr, "erresc: invalid base64\n");
+				}
+			}
+			return;
 		case 4: /* color set */
 			if (narg < 3)
 				break;
diff --git a/st.info b/st.info
index 13cc8eb..0b928af 100644
--- a/st.info
+++ b/st.info
_AT_@ -189,6 +189,7 @@ st| simpleterm,
 	Se,
 	Ss,
 	Tc,
+	Ms=\E]52;%p1%s;%p2%s\007,
 
 st-256color| simpleterm with 256 colors,
 	use=st,
-- 
2.12.0

Received on Sat Mar 18 2017 - 08:18:17 CET