download st-copyurl patches

1 files changed, 156 insertions, 0 deletions

diff --git a/patches/st-copyurl-multiline-20220221-0.8.5.diff b/patches/st-copyurl-multiline-20220221-0.8.5.diff
new file mode 100644
index 0000000..7cd26e2
--- /dev/null
+++ b/patches/st-copyurl-multiline-20220221-0.8.5.diff
@@ -0,0 +1,156 @@
+From 30a04d9ecb3998953bdbe42e5617d00d6002869b Mon Sep 17 00:00:00 2001
+From: Santtu Lakkala <inz@inz.fi>
+Date: Wed, 16 Feb 2022 20:34:20 +0200
+Subject: [PATCH] Loop through urls on screen and copy to clipboard
+
+Replace url detection heuristics with a DFA, enabling urls that span
+multiple lines. Also fix the selection not to use snapping so that urls
+are selected exactly.
+---
+ config.def.h |  1 +
+ st.c         | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++
+ st.h         |  1 +
+ 3 files changed, 95 insertions(+)
+
+diff --git a/config.def.h b/config.def.h
+index 91ab8ca..3f365c7 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -201,6 +201,7 @@ static Shortcut shortcuts[] = {
+ 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
+ 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
+ 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
++	{ MODKEY,               XK_l,           copyurl,        {.i =  0} },
+ };
+ 
+ /*
+diff --git a/st.c b/st.c
+index 51049ba..5b6d919 100644
+--- a/st.c
++++ b/st.c
+@@ -152,6 +152,11 @@ typedef struct {
+ 	int narg;              /* nb of args */
+ } STREscape;
+ 
++typedef struct {
++	int state;
++	size_t length;
++} URLdfa;
++
+ static void execsh(char *, char **);
+ static void stty(char **);
+ static void sigchld(int);
+@@ -200,6 +205,7 @@ static void tdefutf8(char);
+ static int32_t tdefcolor(const int *, int *, int);
+ static void tdeftran(char);
+ static void tstrsequence(uchar);
++static int daddch(URLdfa *, char);
+ 
+ static void drawregion(int, int, int, int);
+ 
+@@ -2688,3 +2694,90 @@ redraw(void)
+ 	tfulldirt();
+ 	draw();
+ }
++
++int
++daddch(URLdfa *dfa, char c)
++{
++	/* () and [] can appear in urls, but excluding them here will reduce false
++	 * positives when figuring out where a given url ends.
++	 */
++	static const char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
++		"abcdefghijklmnopqrstuvwxyz"
++		"0123456789-._~:/?#@!$&'*+,;=%";
++	static const char RPFX[] = "//:sptth";
++
++	if (!strchr(URLCHARS, c)) {
++		dfa->length = 0;
++		dfa->state = 0;
++
++		return 0;
++	}
++
++	dfa->length++;
++
++	if (dfa->state == 2 && c == '/') {
++		dfa->state = 0;
++	} else if (dfa->state == 3 && c == 'p') {
++		dfa->state++;
++	} else if (c != RPFX[dfa->state]) {
++		dfa->state = 0;
++		return 0;
++	}
++
++	if (dfa->state++ == 7) {
++		dfa->state = 0;
++		return 1;
++	}
++
++	return 0;
++}
++
++/*
++** Select and copy the previous url on screen (do nothing if there's no url).
++*/
++void
++copyurl(const Arg *arg) {
++	int row = 0, /* row of current URL */
++		col = 0, /* column of current URL start */
++		colend = 0, /* column of last occurrence */
++		passes = 0; /* how many rows have been scanned */
++
++	const char *c = NULL,
++		 *match = NULL;
++	URLdfa dfa = { 0 };
++
++	row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y : term.bot;
++	LIMIT(row, term.top, term.bot);
++
++	colend = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.x : term.col;
++	LIMIT(colend, 0, term.col);
++
++	/*
++	** Scan from (term.row - 1,term.col - 1) to (0,0) and find
++	** next occurrance of a URL
++	*/
++	for (passes = 0; passes < term.row; passes++) {
++		/* Read in each column of every row until
++		** we hit previous occurrence of URL
++		*/
++		for (col = colend; col--;)
++			if (daddch(&dfa, term.line[row][col].u < 128 ? term.line[row][col].u : ' '))
++				break;
++
++		if (col >= 0)
++			break;
++
++		if (--row < 0)
++			row = term.row - 1;
++
++		colend = term.col;
++	}
++
++	if (passes < term.row) {
++		selstart(col, row, 0);
++		selextend((col + dfa.length - 1) % term.col, row + (col + dfa.length - 1) / term.col, SEL_REGULAR, 0);
++		selextend((col + dfa.length - 1) % term.col, row + (col + dfa.length - 1) / term.col, SEL_REGULAR, 1);
++		xsetsel(getsel());
++		xclipcopy();
++	}
++}
+diff --git a/st.h b/st.h
+index 519b9bd..0458005 100644
+--- a/st.h
++++ b/st.h
+@@ -85,6 +85,7 @@ void printscreen(const Arg *);
+ void printsel(const Arg *);
+ void sendbreak(const Arg *);
+ void toggleprinter(const Arg *);
++void copyurl(const Arg *);
+ 
+ int tattrset(int);
+ void tnew(int, int);
+-- 
+2.32.0
+