From d5b492049f48dc411b0dd7dc01a403304c20438d Mon Sep 17 00:00:00 2001 From: Jishnu Sen Date: Sun, 7 Apr 2024 22:54:46 -0700 Subject: [PATCH] Highlight URLs with control and follow with click --- config.def.h | 11 +++++++ st.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++ st.h | 9 ++++++ x.c | 24 +++++++++++++- 4 files changed, 132 insertions(+), 1 deletion(-) diff --git a/config.def.h b/config.def.h index 91ab8ca..4961830 100644 --- a/config.def.h +++ b/config.def.h @@ -472,3 +472,14 @@ static char ascii_printable[] = " !\"#$%&'()*+,-./0123456789:;<=>?" "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_" "`abcdefghijklmnopqrstuvwxyz{|}~"; + +/* + * Open urls starting with urlprefixes, contatining urlchars + * by passing as ARG1 to urlhandler. + */ +char* urlhandler = "xdg-open"; +char urlchars[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789-._~:/?#@!$&'*+,;=%"; +char* urlprefixes[] = {"http://", "https://", NULL}; diff --git a/st.c b/st.c index 51049ba..8f2156c 100644 --- a/st.c +++ b/st.c @@ -643,6 +643,95 @@ getsel(void) return str; } +char * +strstrany(char* s, char** strs) { + char *match; + for (int i = 0; strs[i]; i++) { + if ((match = strstr(s, strs[i]))) { + return match; + } + } + return NULL; +} + +void +highlighturls(void) +{ + char *match; + char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */ + for (int i = term.top; i < term.bot; i++) { + int url_start = -1; + for (int j = 0; j < term.col; j++) { + if (term.line[i][j].u < 127) { + linestr[j] = term.line[i][j].u; + } + linestr[term.col] = '\0'; + } + while ((match = strstrany(linestr + url_start + 1, urlprefixes))) { + url_start = match - linestr; + for (int c = url_start; c < term.col && strchr(urlchars, linestr[c]); c++) { + term.line[i][c].mode |= ATTR_URL; + tsetdirt(i, c); + } + } + } + free(linestr); +} + +void +unhighlighturls(void) +{ + for (int i = term.top; i < term.bot; i++) { + for (int j = 0; j < term.col; j++) { + Glyph* g = &term.line[i][j]; + if (g->mode & ATTR_URL) { + g->mode &= ~ATTR_URL; + tsetdirt(i, j); + } + } + } + return; +} + +void +followurl(int x, int y) { + char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */ + char *match; + for (int i = 0; i < term.col; i++) { + if (term.line[x][i].u < 127) { + linestr[i] = term.line[x][i].u; + } + linestr[term.col] = '\0'; + } + int url_start = -1; + while ((match = strstrany(linestr + url_start + 1, urlprefixes))) { + url_start = match - linestr; + int url_end = url_start; + for (int c = url_start; c < term.col && strchr(urlchars, linestr[c]); c++) { + url_end++; + } + if (url_start <= y && y < url_end) { + linestr[url_end] = '\0'; + break; + } + } + if (url_start == -1) { + free(linestr); + return; + } + + pid_t chpid; + if ((chpid = fork()) == 0) { + if (fork() == 0) + execlp(urlhandler, urlhandler, linestr + url_start, NULL); + exit(1); + } + if (chpid > 0) + waitpid(chpid, NULL, 0); + free(linestr); + unhighlighturls(); +} + void selclear(void) { diff --git a/st.h b/st.h index 519b9bd..354e7f9 100644 --- a/st.h +++ b/st.h @@ -34,6 +34,7 @@ enum glyph_attribute { ATTR_WIDE = 1 << 9, ATTR_WDUMMY = 1 << 10, ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT, + ATTR_URL = 1 << 14, }; enum selection_mode { @@ -105,6 +106,10 @@ void selextend(int, int, int, int); int selected(int, int); char *getsel(void); +void highlighturls(void); +void unhighlighturls(void); +void followurl(int, int); + size_t utf8encode(Rune, char *); void *xmalloc(size_t); @@ -126,3 +131,7 @@ extern unsigned int tabspaces; extern unsigned int defaultfg; extern unsigned int defaultbg; extern unsigned int defaultcs; +extern char *urlhandler; +extern char urlchars[]; +extern char *urlprefixes[]; +extern int nurlprefixes; diff --git a/x.c b/x.c index 8a16faa..13f68e4 100644 --- a/x.c +++ b/x.c @@ -191,6 +191,7 @@ static void usage(void); static void (*handler[LASTEvent])(XEvent *) = { [KeyPress] = kpress, + [KeyRelease] = kpress, [ClientMessage] = cmessage, [ConfigureNotify] = resize, [VisibilityNotify] = visibility, @@ -445,6 +446,15 @@ mouseaction(XEvent *e, uint release) /* ignore Buttonmask for Button - it's set on release */ uint state = e->xbutton.state & ~buttonmask(e->xbutton.button); + if (release == 0 && + e->xbutton.button == Button1 && + (match(ControlMask, state) || + match(ControlMask, state & ~forcemousemod))) { + followurl(evrow(e), evcol(e)); + return 1; + } + + for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) { if (ms->release == release && ms->button == e->xbutton.button && @@ -1476,7 +1486,7 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i XftDrawGlyphFontSpec(xw.draw, fg, specs, len); /* Render underline and strikethrough. */ - if (base.mode & ATTR_UNDERLINE) { + if (base.mode & ATTR_UNDERLINE || base.mode & ATTR_URL) { XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1, width, 1); } @@ -1831,6 +1841,18 @@ kpress(XEvent *ev) len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status); else len = XLookupString(e, buf, sizeof buf, &ksym, NULL); + + /* 0. highlight URLs when control held */ + if (ksym == XK_Control_L) { + highlighturls(); + } else if (ev->type == KeyRelease && e->keycode == XKeysymToKeycode(e->display, XK_Control_L)) { + unhighlighturls(); + } + + /* KeyRelease not relevant to shortcuts */ + if (ev->type == KeyRelease) + return; + /* 1. shortcuts */ for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) { if (ksym == bp->keysym && match(bp->mod, e->state)) { -- 2.44.0