Mercurial > dwm-meillo
annotate main.c @ 65:4f7b232bd72d
if stdin writer stops working, dwm consumed much IO load because it still tried to select on this fd, fixed
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Fri, 14 Jul 2006 17:30:37 +0200 |
| parents | 46d44d185464 |
| children | c2ddb9dbbd10 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> | |
| 3 * See LICENSE file for license details. | |
| 4 */ | |
| 5 | |
|
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6 #include <errno.h> |
| 0 | 7 #include <stdarg.h> |
| 8 #include <stdio.h> | |
| 9 #include <stdlib.h> | |
|
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10 #include <string.h> |
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11 #include <unistd.h> |
| 0 | 12 |
| 13 #include <X11/cursorfont.h> | |
| 14 #include <X11/Xatom.h> | |
| 15 #include <X11/Xproto.h> | |
| 16 | |
| 43 | 17 #include "dwm.h" |
| 0 | 18 |
| 31 | 19 /********** CUSTOMIZE **********/ |
| 20 | |
| 21 char *tags[TLast] = { | |
| 22 [Tscratch] = "scratch", | |
| 23 [Tdev] = "dev", | |
| 24 [Twww] = "www", | |
| 25 [Twork] = "work", | |
| 26 }; | |
| 27 | |
| 28 /********** CUSTOMIZE **********/ | |
| 29 | |
|
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30 /* X structs */ |
| 0 | 31 Display *dpy; |
| 5 | 32 Window root, barwin; |
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33 Atom wm_atom[WMLast], net_atom[NetLast]; |
| 0 | 34 Cursor cursor[CurLast]; |
| 5 | 35 Bool running = True; |
| 31 | 36 Bool issel; |
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37 |
| 31 | 38 int tsel = Tdev; /* default tag */ |
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39 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw; |
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40 char stext[1024]; |
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41 |
| 34 | 42 DC dc = {0}; |
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43 Client *clients = NULL; |
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44 Client *sel = NULL; |
| 0 | 45 |
| 46 static Bool other_wm_running; | |
| 31 | 47 static const char version[] = |
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48 "dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n"; |
| 0 | 49 static int (*x_error_handler) (Display *, XErrorEvent *); |
| 50 | |
| 51 static void | |
| 34 | 52 usage() { error("usage: dwm [-v]\n"); } |
| 0 | 53 |
| 54 static void | |
| 55 scan_wins() | |
| 56 { | |
| 57 unsigned int i, num; | |
| 58 Window *wins; | |
| 59 XWindowAttributes wa; | |
| 60 Window d1, d2; | |
| 61 | |
| 62 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { | |
| 63 for(i = 0; i < num; i++) { | |
| 64 if(!XGetWindowAttributes(dpy, wins[i], &wa)) | |
| 65 continue; | |
| 66 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) | |
| 67 continue; | |
| 68 if(wa.map_state == IsViewable) | |
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69 manage(wins[i], &wa); |
| 0 | 70 } |
| 71 } | |
| 72 if(wins) | |
| 73 XFree(wins); | |
| 74 } | |
| 75 | |
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76 static int |
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77 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop) |
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78 { |
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79 Atom real; |
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80 int format; |
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81 unsigned long res, extra; |
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82 int status; |
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83 |
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84 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format, |
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85 &res, &extra, prop); |
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86 |
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87 if(status != Success || *prop == 0) { |
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88 return 0; |
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89 } |
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90 if(res == 0) { |
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91 free((void *) *prop); |
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92 } |
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93 return res; |
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94 } |
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95 |
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96 int |
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97 win_proto(Window w) |
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98 { |
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99 unsigned char *protocols; |
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100 long res; |
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101 int protos = 0; |
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102 int i; |
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103 |
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104 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols); |
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105 if(res <= 0) { |
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106 return protos; |
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107 } |
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108 for(i = 0; i < res; i++) { |
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109 if(protocols[i] == wm_atom[WMDelete]) |
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110 protos |= WM_PROTOCOL_DELWIN; |
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111 } |
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112 free((char *) protocols); |
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113 return protos; |
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114 } |
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115 |
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116 void |
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117 send_message(Window w, Atom a, long value) |
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118 { |
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119 XEvent e; |
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120 |
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121 e.type = ClientMessage; |
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122 e.xclient.window = w; |
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123 e.xclient.message_type = a; |
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124 e.xclient.format = 32; |
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125 e.xclient.data.l[0] = value; |
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126 e.xclient.data.l[1] = CurrentTime; |
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127 XSendEvent(dpy, w, False, NoEventMask, &e); |
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128 XFlush(dpy); |
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129 } |
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130 |
| 0 | 131 /* |
| 132 * There's no way to check accesses to destroyed windows, thus | |
| 133 * those cases are ignored (especially on UnmapNotify's). | |
| 134 * Other types of errors call Xlib's default error handler, which | |
| 135 * calls exit(). | |
| 136 */ | |
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137 int |
| 0 | 138 error_handler(Display *dpy, XErrorEvent *error) |
| 139 { | |
| 140 if(error->error_code == BadWindow | |
| 141 || (error->request_code == X_SetInputFocus | |
| 142 && error->error_code == BadMatch) | |
| 143 || (error->request_code == X_PolyText8 | |
| 144 && error->error_code == BadDrawable) | |
| 145 || (error->request_code == X_PolyFillRectangle | |
| 146 && error->error_code == BadDrawable) | |
| 147 || (error->request_code == X_PolySegment | |
| 148 && error->error_code == BadDrawable) | |
| 149 || (error->request_code == X_ConfigureWindow | |
| 150 && error->error_code == BadMatch) | |
| 151 || (error->request_code == X_GrabKey | |
| 152 && error->error_code == BadAccess)) | |
| 153 return 0; | |
| 34 | 154 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n", |
| 0 | 155 error->request_code, error->error_code); |
| 156 return x_error_handler(dpy, error); /* may call exit() */ | |
| 157 } | |
| 158 | |
| 159 /* | |
| 160 * Startup Error handler to check if another window manager | |
| 161 * is already running. | |
| 162 */ | |
| 163 static int | |
| 164 startup_error_handler(Display *dpy, XErrorEvent *error) | |
| 165 { | |
| 166 other_wm_running = True; | |
| 167 return -1; | |
| 168 } | |
| 169 | |
| 170 static void | |
| 171 cleanup() | |
| 172 { | |
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173 while(sel) { |
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174 resize(sel, True); |
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175 unmanage(sel); |
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176 } |
| 0 | 177 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); |
| 178 } | |
| 179 | |
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180 void |
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181 quit(Arg *arg) |
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182 { |
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183 running = False; |
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184 } |
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185 |
| 0 | 186 int |
| 187 main(int argc, char *argv[]) | |
| 188 { | |
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189 int i, n; |
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190 fd_set rd; |
| 0 | 191 XSetWindowAttributes wa; |
| 192 unsigned int mask; | |
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193 Bool readstdin = True; |
| 0 | 194 Window w; |
| 5 | 195 XEvent ev; |
| 0 | 196 |
| 197 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) { | |
| 198 switch (argv[i][1]) { | |
| 199 case 'v': | |
| 200 fprintf(stdout, "%s", version); | |
| 201 exit(0); | |
| 202 break; | |
| 203 default: | |
| 204 usage(); | |
| 205 break; | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 dpy = XOpenDisplay(0); | |
| 210 if(!dpy) | |
| 34 | 211 error("dwm: cannot connect X server\n"); |
| 0 | 212 |
| 213 screen = DefaultScreen(dpy); | |
| 214 root = RootWindow(dpy, screen); | |
| 215 | |
| 216 /* check if another WM is already running */ | |
| 217 other_wm_running = False; | |
| 218 XSetErrorHandler(startup_error_handler); | |
| 219 /* this causes an error if some other WM is running */ | |
| 220 XSelectInput(dpy, root, SubstructureRedirectMask); | |
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221 XFlush(dpy); |
| 0 | 222 |
| 223 if(other_wm_running) | |
| 34 | 224 error("dwm: another window manager is already running\n"); |
| 0 | 225 |
| 226 XSetErrorHandler(0); | |
| 227 x_error_handler = XSetErrorHandler(error_handler); | |
| 228 | |
| 229 /* init atoms */ | |
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230 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); |
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231 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); |
| 0 | 232 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); |
| 233 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); | |
| 234 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32, | |
| 235 PropModeReplace, (unsigned char *) net_atom, NetLast); | |
| 236 | |
| 237 /* init cursors */ | |
| 238 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); | |
| 239 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); | |
| 240 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); | |
| 241 | |
| 8 | 242 update_keys(); |
| 0 | 243 |
| 5 | 244 /* style */ |
| 43 | 245 dc.bg = initcolor(BGCOLOR); |
| 246 dc.fg = initcolor(FGCOLOR); | |
| 247 dc.border = initcolor(BORDERCOLOR); | |
| 248 initfont(FONT); | |
| 5 | 249 |
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250 sx = sy = 0; |
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251 sw = DisplayWidth(dpy, screen); |
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252 sh = DisplayHeight(dpy, screen); |
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253 mw = (sw * MASTERW) / 100; |
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254 |
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255 wa.override_redirect = 1; |
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256 wa.background_pixmap = ParentRelative; |
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257 wa.event_mask = ButtonPressMask | ExposureMask; |
| 5 | 258 |
|
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259 bx = by = 0; |
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260 bw = sw; |
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261 dc.h = bh = dc.font.height + 4; |
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262 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen), |
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263 CopyFromParent, DefaultVisual(dpy, screen), |
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264 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa); |
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265 XDefineCursor(dpy, barwin, cursor[CurNormal]); |
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266 XMapRaised(dpy, barwin); |
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267 |
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268 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); |
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269 dc.gc = XCreateGC(dpy, root, 0, 0); |
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270 draw_bar(); |
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271 |
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272 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); |
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273 |
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fixed several stuff (gridwm gets better and better)
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274 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \ |
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275 | LeaveWindowMask; |
| 0 | 276 wa.cursor = cursor[CurNormal]; |
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277 |
| 0 | 278 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); |
| 279 | |
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280 strcpy(stext, "dwm-"VERSION); |
| 5 | 281 scan_wins(); |
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282 |
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283 /* main event loop, reads status text from stdin as well */ |
| 61 | 284 Mainloop: |
| 5 | 285 while(running) { |
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286 FD_ZERO(&rd); |
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287 if(readstdin) |
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288 FD_SET(STDIN_FILENO, &rd); |
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289 FD_SET(ConnectionNumber(dpy), &rd); |
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290 |
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291 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0); |
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292 if(i == -1 && errno == EINTR) |
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293 continue; |
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294 if(i < 0) |
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295 error("select failed\n"); |
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296 else if(i > 0) { |
| 64 | 297 if(FD_ISSET(ConnectionNumber(dpy), &rd)) { |
| 298 while(XPending(dpy)) { | |
| 299 XNextEvent(dpy, &ev); | |
| 300 if(handler[ev.type]) | |
| 301 (handler[ev.type])(&ev); /* call handler */ | |
| 302 } | |
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303 } |
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304 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) { |
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305 i = n = 0; |
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306 for(;;) { |
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307 if((i = getchar()) == EOF) { |
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308 /* broken pipe/end of producer */ |
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309 readstdin = False; |
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310 strcpy(stext, "broken pipe"); |
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311 goto Mainloop; |
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312 } |
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313 if(i == '\n' || n >= sizeof(stext) - 1) |
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314 break; |
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315 stext[n++] = i; |
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316 } |
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317 stext[n] = 0; |
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318 draw_bar(); |
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319 } |
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320 } |
| 5 | 321 } |
| 0 | 322 |
| 323 cleanup(); | |
| 324 XCloseDisplay(dpy); | |
| 325 | |
| 326 return 0; | |
| 327 } |