ranger - mirror of ranger - a simple, vim-like file manager

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README

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doc/pydoc/ranger.fm.html

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doc/pydoc/ranger.html

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ranger/__init__.py

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/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com> * See LICENSE file for license details. */ #include "dwm.h" #include <errno.h> #include <locale.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/select.h> #include <X11/cursorfont.h> #include <X11/keysym.h> #include <X11/Xatom.h> #include <X11/Xproto.h> /* extern */ char stext[256]; int bh, bmw, screen, sx, sy, sw, sh, wax, way, waw, wah; unsigned int ntags, numlockmask; Atom wmatom[WMLast], netatom[NetLast]; Bool running = True; Bool *seltag; Bool selscreen = True; Client *clients = NULL; Client *sel = NULL; Client *stack = NULL; Cursor cursor[CurLast]; Display *dpy; DC dc = {0}; Window root, barwin; /* static */ static int (*xerrorxlib)(Display *, XErrorEvent *); static Bool otherwm, readin; static void cleanup(void) { close(STDIN_FILENO); while(stack) { if(stack->isbanned) XMoveWindow(dpy, stack->win, stack->x, stack->y); unmanage(stack); } if(dc.font.set) XFreeFontSet(dpy, dc.font.set); else XFreeFont(dpy, dc.font.xfont); XUngrabKey(dpy, AnyKey, AnyModifier, root); XFreePixmap(dpy, dc.drawable); XFreeGC(dpy, dc.gc); XDestroyWindow(dpy, barwin); XFreeCursor(dpy, cursor[CurNormal]); XFreeCursor(dpy, cursor[CurResize]); XFreeCursor(dpy, cursor[CurMove]); XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); XSync(dpy, False); free(seltag); } static unsigned int textnw(const char *text, unsigned int len) { XRectangle r; if(dc.font.set) { XmbTextExtents(dc.font.set, text, len, NULL, &r); return r.width; } return XTextWidth(dc.font.xfont, text, len); } static void drawtext(const char *text, unsigned long col[ColLast], Bool filledsquare, Bool emptysquare) { int x, y, w, h; static char buf[256]; unsigned int len, olen; XGCValues gcv; XRectangle r = { dc.x, dc.y, dc.w, dc.h }; XSetForeground(dpy, dc.gc, col[ColBG]); XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); if(!text) return; w = 0; olen = len = strlen(text); if(len >= sizeof buf) len = sizeof buf - 1; memcpy(buf, text, len); buf[len] = 0; h = dc.font.ascent + dc.font.descent; y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent; x = dc.x + (h / 2); /* shorten text if necessary */ while(len && (w = textnw(buf, len)) > dc.w - h) buf[--len] = 0; if(len < olen) { if(len > 1) buf[len - 1] = '.'; if(len > 2) buf[len - 2] = '.'; if(len > 3) buf[len - 3] = '.'; } if(w > dc.w) return; /* too long */ gcv.foreground = col[ColFG]; if(dc.font.set) { XChangeGC(dpy, dc.gc, GCForeground, &gcv); XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len); } else { gcv.font = dc.font.xfont->fid; XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv); XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len); } x = (h + 2) / 4; r.x = dc.x + 1; r.y = dc.y + 1; if(filledsquare) { r.width = r.height = x + 1; XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); } else if(emptysquare) { r.width = r.height = x; XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1); } } static unsigned long getcolor(const char *colstr) { Colormap cmap = DefaultColormap(dpy, screen); XColor color; if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color)) eprint("error, cannot allocate color '%s'\n", colstr); return color.pixel; } static Bool isoccupied(unsigned int t) { Client *c; for(c = clients; c; c = c->next) if(c->tags[t]) return True; return False; } static void scan(void) { unsigned int i, num; Window *wins, d1, d2; XWindowAttributes wa; wins = NULL; if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { for(i = 0; i < num; i++) { if(!XGetWindowAttributes(dpy, wins[i], &wa) || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) continue; if(wa.map_state == IsViewable) manage(wins[i], &wa); } } if(wins) XFree(wins); } static void setfont(const char *fontstr) { char *def, **missing; int i, n; missing = NULL; if(dc.font.set) XFreeFontSet(dpy, dc.font.set); dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def); if(missing) { while(n--) fprintf(stderr, "missing fontset: %s\n", missing[n]); XFreeStringList(missing); } if(dc.font.set) { XFontSetExtents *font_extents; XFontStruct **xfonts; char **font_names; dc.font.ascent = dc.font.descent = 0; font_extents = XExtentsOfFontSet(dc.font.set); n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names); for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) { if(dc.font.ascent < (*xfonts)->ascent) dc.font.ascent = (*xfonts)->ascent; if(dc.font.descent < (*xfonts)->descent) dc.font.descent = (*xfonts)->descent; xfonts++; } } else { if(dc.font.xfont) XFreeFont(dpy, dc.font.xfont); dc.font.xfont = NULL; if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))) eprint("error, cannot load font: '%s'\n", fontstr); dc.font.ascent = dc.font.xfont->ascent; dc.font.descent = dc.font.xfont->descent; } dc.font.height = dc.font.ascent + dc.font.descent; } static void setup(void) { int i, j; unsigned int mask; Window w; XModifierKeymap *modmap; XSetWindowAttributes wa; /* init atoms */ wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False); netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32, PropModeReplace, (unsigned char *) netatom, NetLast); /* init cursors */ cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); /* init modifier map */ numlockmask = 0; modmap = XGetModifierMapping(dpy); for (i = 0; i < 8; i++) for (j = 0; j < modmap->max_keypermod; j++) { if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock)) numlockmask = (1 << i); } XFreeModifiermap(modmap); /* select for events */ wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask; wa.cursor = cursor[CurNormal]; XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); grabkeys(); compileregexps(); for(ntags = 0; tags[ntags]; ntags++); seltag = emallocz(sizeof(Bool) * ntags); seltag[0] = True; /* style */ dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR); dc.norm[ColBG] = getcolor(NORMBGCOLOR); dc.norm[ColFG] = getcolor(NORMFGCOLOR); dc.sel[ColBorder] = getcolor(SELBORDERCOLOR); dc.sel[ColBG] = getcolor(SELBGCOLOR); dc.sel[ColFG] = getcolor(SELFGCOLOR); setfont(FONT); /* geometry */ sx = sy = 0; sw = DisplayWidth(dpy, screen); sh = DisplayHeight(dpy, screen); bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL); /* bar */ dc.h = bh = dc.font.height + 2; wa.override_redirect = 1; wa.background_pixmap = ParentRelative; wa.event_mask = ButtonPressMask | ExposureMask; barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0, DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa); XDefineCursor(dpy, barwin, cursor[CurNormal]); XMapRaised(dpy, barwin); strcpy(stext, "dwm-"VERSION); /* windowarea */ wax = sx; way = sy + (TOPBAR ? bh : 0); wah = sh - bh; waw = sw; /* pixmap for everything */ dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); dc.gc = XCreateGC(dpy, root, 0, 0); XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter); /* multihead support */ selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); } /* * Startup Error handler to check if another window manager * is already running. */ static int xerrorstart(Display *dsply, XErrorEvent *ee) { otherwm = True; return -1; } /* extern */ void drawstatus(void) { int i, x; dc.x = dc.y = 0; for(i = 0; i < ntags; i++) { dc.w = textw(tags[i]); if(seltag[i]) drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i)); else drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i)); dc.x += dc.w; } dc.w = bmw; drawtext(arrange == dofloat ? FLOATSYMBOL : TILESYMBOL, dc.norm, False, False); x = dc.x + dc.w; dc.w = textw(stext); dc.x = sw - dc.w; if(dc.x < x) { dc.x = x; dc.w = sw - x; } drawtext(stext, dc.norm, False, False); if((dc.w = dc.x - x) > bh) { dc.x = x; drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False); } XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0); XSync(dpy, False); } void sendevent(Window w, Atom a, long value) { XEvent e; e.type = ClientMessage; e.xclient.window = w; e.xclient.message_type = a; e.xclient.format = 32; e.xclient.data.l[0] = value; e.xclient.data.l[1] = CurrentTime; XSendEvent(dpy, w, False, NoEventMask, &e); XSync(dpy, False); } unsigned int textw(const char *text) { return textnw(text, strlen(text)) + dc.font.height; } void quit(Arg *arg) { readin = running = False; } /* There's no way to check accesses to destroyed windows, thus those cases are * ignored (especially on UnmapNotify's). Other types of errors call Xlibs * default error handler, which may call exit. */ int xerror(Display *dpy, XErrorEvent *ee) { if(ee->error_code == BadWindow || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch) || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable) || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable) || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable) || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch) || (ee->request_code == X_GrabKey && ee->error_code == BadAccess) || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable)) return 0; fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n", ee->request_code, ee->error_code); return xerrorxlib(dpy, ee); /* may call exit */ } int main(int argc, char *argv[]) { char *p; int r, xfd; fd_set rd; XEvent ev; if(argc == 2 && !strncmp("-v", argv[1], 3)) { fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout); exit(EXIT_SUCCESS); } else if(argc != 1) eprint("usage: dwm [-v]\n"); setlocale(LC_CTYPE, ""); dpy = XOpenDisplay(0); if(!dpy) eprint("dwm: cannot open display\n"); xfd = ConnectionNumber(dpy); screen = DefaultScreen(dpy); root = RootWindow(dpy, screen); otherwm = False; XSetErrorHandler(xerrorstart); /* this causes an error if some other window manager is running */ XSelectInput(dpy, root, SubstructureRedirectMask); XSync(dpy, False); if(otherwm) eprint("dwm: another window manager is already running\n"); XSync(dpy, False); XSetErrorHandler(NULL); xerrorxlib = XSetErrorHandler(xerror); XSync(dpy, False); setup(); drawstatus(); scan(); /* main event loop, also reads status text from stdin */ XSync(dpy, False); readin = True; while(running) { FD_ZERO(&rd); if(readin) FD_SET(STDIN_FILENO, &rd); FD_SET(xfd, &rd); if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) { if(errno == EINTR) continue; eprint("select failed\n"); } if(FD_ISSET(STDIN_FILENO, &rd)) { switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) { case -1: strncpy(stext, strerror(errno), sizeof stext - 1); stext[sizeof stext - 1] = '\0'; readin = False; break; case 0: strncpy(stext, "EOF", 4); readin = False; break; default: for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0'); for(; p >= stext && *p != '\n'; --p); if(p > stext) strncpy(stext, p + 1, sizeof stext); } drawstatus(); } if(FD_ISSET(xfd, &rd)) while(XPending(dpy)) { XNextEvent(dpy, &ev); if(handler[ev.type]) (handler[ev.type])(&ev); /* call handler */ } } cleanup(); XCloseDisplay(dpy); return 0; }


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