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	st-copyurl-20230406-211964d.diff (4255B)
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	1 From 8b07fb9ab581eb31714f0dd25a419926a7f34cc6 Mon Sep 17 00:00:00 2001
	2 From: Gildasio Junior <[email protected]>
	3 Date: Thu, 6 Apr 2023 14:54:23 -0300
	4 Subject: [PATCH] Loop through urls on screen in both directions
	5
	6 Using previous patches one can loop through urls in the screen in one
	7 direction: botton-up. This patch add a way that can go in the opposite
	8 direction: top-down.
	9
	10 This is usefull in a screen with lots of urls.
	11 ---
	12 config.def.h \| 2 ++
	13 st.c \| 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++
	14 st.h \| 1 +
	15 3 files changed, 93 insertions(+)
	16
	17 diff --git a/config.def.h b/config.def.h
	18 index 91ab8ca..4df78eb 100644
	19 --- a/config.def.h
	20 +++ b/config.def.h
	21 @@ -201,6 +201,8 @@ static Shortcut shortcuts[] = {
	22 { TERMMOD, XK_Y, selpaste, {.i = …
	23 { ShiftMask, XK_Insert, selpaste, {.i = …
	24 { TERMMOD, XK_Num_Lock, numlock, {.i = …
	25 + { MODKEY, XK_l, copyurl, {.i = …
	26 + { MODKEY\|ShiftMask, XK_L, copyurl, {.i = …
	27 };
	28
	29 /*
	30 diff --git a/st.c b/st.c
	31 index 134e724..1b321ab 100644
	32 --- a/st.c
	33 +++ b/st.c
	34 @@ -201,6 +201,7 @@ static void tdefutf8(char);
	35 static int32_t tdefcolor(const int , int , int);
	36 static void tdeftran(char);
	37 static void tstrsequence(uchar);
	38 +static const char findlastany(const char , const char**, size_t);
	39
	40 static void drawregion(int, int, int, int);
	41
	42 @@ -2666,3 +2667,92 @@ redraw(void)
	43 tfulldirt();
	44 draw();
	45 }
	46 +
	47 +const char *
	48 +findlastany(const char str, const char*find, size_t len)
	49 +{
	50 + const char *found = NULL;
	51 + int i = 0;
	52 +
	53 + for (found = str + strlen(str) - 1; found >= str; --found) {
	54 + for(i = 0; i < len; i++) {
	55 + if (strncmp(found, find[i], strlen(find[i])) ==…
	56 + return found;
	57 + }
	58 + }
	59 + }
	60 +
	61 + return NULL;
	62 +}
	63 +
	64 +/*
	65 +** Select and copy the previous url on screen (do nothing if there's no…
	66 +**
	67 +** FIXME: doesn't handle urls that span multiple lines; will need to ad…
	68 +** for multiline "getsel()" first
	69 +*/
	70 +void
	71 +copyurl(const Arg *arg) {
	72 + /* () and [] can appear in urls, but excluding them here will r…
	73 + * positives when figuring out where a given url ends.
	74 + */
	75 + static const char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	76 + "abcdefghijklmnopqrstuvwxyz"
	77 + "0123456789-._~:/?#@!$&'*+,;=%";
	78 +
	79 + static const char* URLSTRINGS[] = {"http://", "https://"};
	80 +
	81 + int row = 0, /* row of current URL */
	82 + col = 0, /* column of current URL start */
	83 + colend = 0, /* column of last occurrence */
	84 + passes = 0; /* how many rows have been scanned */
	85 +
	86 + char linestr[term.col + 1];
	87 + const char *c = NULL,
	88 + *match = NULL;
	89 +
	90 + row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y : term.bot;
	91 + LIMIT(row, term.top, term.bot);
	92 +
	93 + colend = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.x : term.col;
	94 + LIMIT(colend, 0, term.col);
	95 +
	96 + /*
	97 + ** Scan from (term.row - 1,term.col - 1) to (0,0) and find
	98 + ** next occurrance of a URL
	99 + */
	100 + for (passes = 0; passes < term.row; passes++) {
	101 + /* Read in each column of every row until
	102 + ** we hit previous occurrence of URL
	103 + */
	104 + for (col = 0; col < colend; ++col)
	105 + linestr[col] = term.line[row][col].u < 128 ? te…
	106 + linestr[col] = '\0';
	107 +
	108 + if ((match = findlastany(linestr, URLSTRINGS,
	109 + sizeof(URLSTRINGS)/size…
	110 + break;
	111 +
	112 + /* .i = 0 --> botton-up
	113 + * .i = 1 --> top-down
	114 + * */
	115 + if (!arg->i) {
	116 + if (--row < 0)
	117 + row = term.row - 1;
	118 + } else {
	119 + if (++row >= term.row)
	120 + row = 0;
	121 + }
	122 +
	123 + colend = term.col;
	124 + };
	125 +
	126 + if (match) {
	127 + size_t l = strspn(match, URLCHARS);
	128 + selstart(match - linestr, row, 0);
	129 + selextend(match - linestr + l - 1, row, SEL_REGULAR, 0);
	130 + selextend(match - linestr + l - 1, row, SEL_REGULAR, 1);
	131 + xsetsel(getsel());
	132 + xclipcopy();
	133 + }
	134 +}
	135 diff --git a/st.h b/st.h
	136 index fd3b0d8..baa8f29 100644
	137 --- a/st.h
	138 +++ b/st.h
	139 @@ -85,6 +85,7 @@ void printscreen(const Arg *);
	140 void printsel(const Arg *);
	141 void sendbreak(const Arg *);
	142 void toggleprinter(const Arg *);
	143 +void copyurl(const Arg *);
	144
	145 int tattrset(int);
	146 void tnew(int, int);
	147 --
	148 2.40.0
	149