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	st-copyurl-20190202-3be4cf1.diff (4677B)
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	1 From f0d27279e47dac9bc413830cc116662dde91837c Mon Sep 17 00:00:00 2001
	2 From: Michael Buch <[email protected]>
	3 Date: Sat, 2 Feb 2019 14:10:31 +0000
	4 Subject: [PATCH] Highlight selected urls
	5
	6 ---
	7 config.def.h \| 1 +
	8 st.c \| 124 +++++++++++++++++++++++++++++++++++++++++++++++++++
	9 st.h \| 1 +
	10 3 files changed, 126 insertions(+)
	11
	12 diff --git a/config.def.h b/config.def.h
	13 index 0e01717..3fb13ec 100644
	14 --- a/config.def.h
	15 +++ b/config.def.h
	16 @@ -178,6 +178,7 @@ static Shortcut shortcuts[] = {
	17 { TERMMOD, XK_Y, selpaste, {.i = …
	18 { ShiftMask, XK_Insert, selpaste, {.i = …
	19 { TERMMOD, XK_Num_Lock, numlock, {.i = …
	20 + { MODKEY, XK_l, copyurl, {.i = …
	21 };
	22
	23 /*
	24 diff --git a/st.c b/st.c
	25 index b8e6077..6970e51 100644
	26 --- a/st.c
	27 +++ b/st.c
	28 @@ -200,6 +200,8 @@ static void tdefutf8(char);
	29 static int32_t tdefcolor(int , int , int);
	30 static void tdeftran(char);
	31 static void tstrsequence(uchar);
	32 +static void tsetcolor(int, int, int, uint32_t, uint32_t);
	33 +static char * findlastany(char , const char*, size_t);
	34
	35 static void drawregion(int, int, int, int);
	36
	37 @@ -2602,3 +2604,125 @@ redraw(void)
	38 tfulldirt();
	39 draw();
	40 }
	41 +
	42 +void
	43 +tsetcolor( int row, int start, int end, uint32_t fg, uint32_t bg )
	44 +{
	45 + int i = start;
	46 + for( ; i < end; ++i )
	47 + {
	48 + term.line[row][i].fg = fg;
	49 + term.line[row][i].bg = bg;
	50 + }
	51 +}
	52 +
	53 +char *
	54 +findlastany(char str, const char* find, size_t len)
	55 +{
	56 + char* found = NULL;
	57 + int i = 0;
	58 + for(found = str + strlen(str) - 1; found >= str; --found) {
	59 + for(i = 0; i < len; i++) {
	60 + if(strncmp(found, find[i], strlen(find[i])) == …
	61 + return found;
	62 + }
	63 + }
	64 + }
	65 +
	66 + return NULL;
	67 +}
	68 +
	69 +/*
	70 +** Select and copy the previous url on screen (do nothing if there's no…
	71 +**
	72 +** FIXME: doesn't handle urls that span multiple lines; will need to ad…
	73 +** for multiline "getsel()" first
	74 +*/
	75 +void
	76 +copyurl(const Arg *arg) {
	77 + /* () and [] can appear in urls, but excluding them here will r…
	78 + * positives when figuring out where a given url ends.
	79 + */
	80 + static char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	81 + "abcdefghijklmnopqrstuvwxyz"
	82 + "0123456789-._~:/?#@!$&'*+,;=%";
	83 +
	84 + static const char* URLSTRINGS[] = {"http://", "https://"};
	85 +
	86 + /* remove highlighting from previous selection if any */
	87 + if(sel.ob.x >= 0 && sel.oe.x >= 0)
	88 + tsetcolor(sel.nb.y, sel.ob.x, sel.oe.x + 1, defaultfg, …
	89 +
	90 + int i = 0,
	91 + row = 0, /* row of current URL */
	92 + col = 0, /* column of current URL start */
	93 + startrow = 0, /* row of last occurrence */
	94 + colend = 0, /* column of last occurrence */
	95 + passes = 0; /* how many rows have been scanned */
	96 +
	97 + char linestr = calloc(sizeof(char), term.col+1); / assume asc…
	98 + char *c = NULL,
	99 + *match = NULL;
	100 +
	101 + row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y : term.bot;
	102 + LIMIT(row, term.top, term.bot);
	103 + startrow = row;
	104 +
	105 + colend = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.x : term.col;
	106 + LIMIT(colend, 0, term.col);
	107 +
	108 + /*
	109 + ** Scan from (term.bot,term.col) to (0,0) and find
	110 + ** next occurrance of a URL
	111 + */
	112 + while(passes !=term.bot + 2) {
	113 + /* Read in each column of every row until
	114 + ** we hit previous occurrence of URL
	115 + */
	116 + for (col = 0, i = 0; col < colend; ++col,++i) {
	117 + /* assume ascii */
	118 + if (term.line[row][col].u > 127)
	119 + continue;
	120 + linestr[i] = term.line[row][col].u;
	121 + }
	122 + linestr[term.col] = '\0';
	123 +
	124 + if ((match = findlastany(linestr, URLSTRINGS,
	125 + sizeof(URLSTRINGS)/size…
	126 + break;
	127 +
	128 + if (--row < term.top)
	129 + row = term.bot;
	130 +
	131 + colend = term.col;
	132 + passes++;
	133 + };
	134 +
	135 + if (match) {
	136 + /* must happen before trim */
	137 + selclear();
	138 + sel.ob.x = strlen(linestr) - strlen(match);
	139 +
	140 + /* trim the rest of the line from the url match */
	141 + for (c = match; *c != '\0'; ++c)
	142 + if (!strchr(URLCHARS, *c)) {
	143 + *c = '\0';
	144 + break;
	145 + }
	146 +
	147 + /* highlight selection by inverting terminal colors */
	148 + tsetcolor(row, sel.ob.x, sel.ob.x + strlen( match ), de…
	149 +
	150 + /* select and copy */
	151 + sel.mode = 1;
	152 + sel.type = SEL_REGULAR;
	153 + sel.oe.x = sel.ob.x + strlen(match)-1;
	154 + sel.ob.y = sel.oe.y = row;
	155 + selnormalize();
	156 + tsetdirt(sel.nb.y, sel.ne.y);
	157 + xsetsel(getsel());
	158 + xclipcopy();
	159 + }
	160 +
	161 + free(linestr);
	162 +}
	163 diff --git a/st.h b/st.h
	164 index 38c61c4..67e7419 100644
	165 --- a/st.h
	166 +++ b/st.h
	167 @@ -84,6 +84,7 @@ void printscreen(const Arg *);
	168 void printsel(const Arg *);
	169 void sendbreak(const Arg *);
	170 void toggleprinter(const Arg *);
	171 +void copyurl(const Arg *);
	172
	173 int tattrset(int);
	174 void tnew(int, int);
	175 --
	176 2.20.1
	177