From a2b1dfe1ba2309fe6ce615ed02fc6e36efed99e9 Mon Sep 17 00:00:00 2001
From: Luke Smith <luke@lukesmith.xyz>
Date: Thu, 13 Dec 2018 17:23:38 -0500
Subject: [PATCH] ctrl-l chooses urls with xurls and dmenu

---
 README.md |  4 +++-
 config.h  |  4 ++++
 st.1      |  5 +++++
 st.c      | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 st.h      |  1 +
 5 files changed, 66 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index b3587c8..35b7bac 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ The [suckless terminal (st)](https://st.suckless.org/) with some additional feat
 + Default font is system "mono" at 16pt, meaning the font will match your system font.
 + Very useful keybinds including:
 	+ Copy is alt-c, paste is alt-v or alt-p pastes from primary selection
+	+ Alt-l feeds all urls on screen to dmenu, so they user can choose and
+	  follow one (requires xurls and dmenu installed).
 	+ Zoom in/out or increase font size with Alt+Shift+k/j or u/d for larger intervals.
 	+ Hold alt and press either ↑/↓ or the vim keys k/j to move up/down in the terminal.
 	+ Shift+Mouse wheel do the same.
@@ -61,7 +63,7 @@ The `alpha` value (for transparency) goes from `0` (transparent) to `255`
 
 To be clear about the color settings:
 
-- This build will use colorized colors by default and as a fallback.
+- This build will use gruvbox colors by default and as a fallback.
 - If there are Xresources colors defined, those will take priority.
 - But if `wal` has run in your session, its colors will take priority.
 
diff --git a/config.h b/config.h
index c4a112e..ba29ff4 100644
--- a/config.h
+++ b/config.h
@@ -207,6 +207,9 @@ MouseKey mkeys[] = {
 	{ Button5,              MODKEY|ShiftMask,         zoom,    {.f =  -1} },
 };
 
+static char *openurlcmd[] = { "/bin/sh", "-c",
+    "xurls | dmenu -l 10 | xargs -r xdg-open",
+    "externalpipe", NULL };
 
 static Shortcut shortcuts[] = {
 	/* mask                 keysym          function        argument */
@@ -239,6 +242,7 @@ static Shortcut shortcuts[] = {
 	{ MODKEY|ShiftMask,     XK_J,           zoom,           {.f = -1} },
 	{ MODKEY|ShiftMask,     XK_U,           zoom,           {.f = +2} },
 	{ MODKEY|ShiftMask,     XK_D,           zoom,           {.f = -2} },
+    	{ MODKEY,		XK_l,		externalpipe,	{ .v = openurlcmd } },
 };
 
 /*
diff --git a/st.1 b/st.1
index b3f63b6..8323401 100644
--- a/st.1
+++ b/st.1
@@ -146,6 +146,11 @@ Copy to clipboard.
 .B Alt-p
 Paste/input primary selection.
 .TP
+.B Alt-l
+Show dmenu menu of all URLs on screen and choose one to open.
+.I Note:
+Requires xurls installed.
+.TP
 .B Break
 Send a break in the serial line.
 Break key is obtained in PC keyboards
diff --git a/st.c b/st.c
index 45d2544..a6310f7 100644
--- a/st.c
+++ b/st.c
@@ -2029,6 +2029,59 @@ tprinter(char *s, size_t len)
 	}
 }
 
+void
+externalpipe(const Arg *arg)
+{
+	int to[2];
+	char buf[UTF_SIZ];
+	void (*oldsigpipe)(int);
+	Glyph *bp, *end;
+	int lastpos, n, newline;
+
+	if (pipe(to) == -1)
+		return;
+
+	switch (fork()) {
+	case -1:
+		close(to[0]);
+		close(to[1]);
+		return;
+	case 0:
+		dup2(to[0], STDIN_FILENO);
+		close(to[0]);
+		close(to[1]);
+		execvp(((char **)arg->v)[0], (char **)arg->v);
+		fprintf(stderr, "st: execvp %s\n", ((char **)arg->v)[0]);
+		perror("failed");
+		exit(0);
+	}
+
+	close(to[0]);
+	/* ignore sigpipe for now, in case child exists early */
+	oldsigpipe = signal(SIGPIPE, SIG_IGN);
+	newline = 0;
+	for (n = 0; n < term.row; n++) {
+		bp = term.line[n];
+		lastpos = MIN(tlinelen(n) + 1, term.col) - 1;
+		if (lastpos < 0)
+			break;
+		end = &bp[lastpos + 1];
+		for (; bp < end; ++bp)
+			if (xwrite(to[1], buf, utf8encode(bp->u, buf)) < 0)
+				break;
+		if ((newline = term.line[n][lastpos].mode & ATTR_WRAP))
+			continue;
+		if (xwrite(to[1], "\n", 1) < 0)
+			break;
+		newline = 0;
+	}
+	if (newline)
+		(void)xwrite(to[1], "\n", 1);
+	close(to[1]);
+	/* restore */
+	signal(SIGPIPE, oldsigpipe);
+}
+
 void
 iso14755(const Arg *arg)
 {
diff --git a/st.h b/st.h
index 850c5f0..01cad23 100644
--- a/st.h
+++ b/st.h
@@ -92,6 +92,7 @@ void die(const char *, ...);
 void redraw(void);
 void draw(void);
 
+void externalpipe(const Arg *);
 void iso14755(const Arg *);
 void printscreen(const Arg *);
 void printsel(const Arg *);