libconfig.git - libconfig Debian packaging

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Diffstat (limited to 'lib/parsectx.h')

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/* $Id: lcd4linux.c,v 1.31 2001/03/12 12:39:36 reinelt Exp $ * * LCD4Linux * * Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: lcd4linux.c,v $ * Revision 1.31 2001/03/12 12:39:36 reinelt * * reworked autoconf a lot: drivers may be excluded, #define's went to config.h * * Revision 1.30 2001/03/08 15:25:38 ltoetsch * improved exec * * Revision 1.29 2001/02/14 07:40:16 reinelt * * first (incomplete) GPO implementation * * Revision 1.28 2000/10/25 08:10:48 reinelt * * added restart funnctionality * (lots of this code was stolen from sendmail.c) * * Revision 1.27 2000/08/10 18:42:20 reinelt * * fixed some bugs with the new syslog code * * Revision 1.26 2000/08/10 09:44:09 reinelt * * new debugging scheme: error(), info(), debug() * uses syslog if in daemon mode * * Revision 1.25 2000/08/09 14:14:11 reinelt * * new switch -F (do not fork) * added automatic forking if -F not specified * * Revision 1.24 2000/08/09 09:50:29 reinelt * * opened 0.98 development * removed driver-specific signal-handlers * added 'quit'-function to driver structure * added global signal-handler * * Revision 1.23 2000/04/17 05:14:27 reinelt * * added README.44780 * * Revision 1.22 2000/04/15 16:56:52 reinelt * * moved delay loops to udelay.c * renamed -d (debugging) switch to -v (verbose) * new switch -d to calibrate delay loop * 'Delay' entry for HD44780 back again * delay loops will not calibrate automatically, because this will fail with hich CPU load * * Revision 1.21 2000/04/15 11:56:35 reinelt * * more debug messages * * Revision 1.20 2000/04/15 11:13:54 reinelt * * added '-d' (debugging) switch * added several debugging messages * removed config entry 'Delay' for HD44780 driver * delay loop for HD44780 will be calibrated automatically * * Revision 1.19 2000/04/10 04:40:53 reinelt * * minor changes and cleanups * * Revision 1.18 2000/04/07 05:42:20 reinelt * * UUCP style lockfiles for the serial port * * Revision 1.17 2000/04/03 17:31:52 reinelt * * suppress welcome message if display is smaller than 20x2 * change lcd4linux.ppm to 32 pixel high so KDE won't stretch the icon * * Revision 1.16 2000/04/03 04:46:38 reinelt * * added '-c key=val' option * * Revision 1.15 2000/04/01 22:40:42 herp * geometric correction (too many pixelgaps) * lcd4linux main should return int, not void * * Revision 1.14 2000/03/26 18:46:28 reinelt * * bug in pixmap.c that leaded to empty bars fixed * name conflicts with X11 resolved * * Revision 1.13 2000/03/26 12:55:03 reinelt * * enhancements to the PPM driver * * Revision 1.12 2000/03/25 05:50:43 reinelt * * memory leak in Raster_flush closed * driver family logic changed * * Revision 1.11 2000/03/24 11:36:56 reinelt * * new syntax for raster configuration * changed XRES and YRES to be configurable * PPM driver works nice * * Revision 1.10 2000/03/23 07:24:48 reinelt * * PPM driver up and running (but slow!) * * Revision 1.9 2000/03/22 15:36:21 reinelt * * added '-l' switch (list drivers) * generic pixmap driver added * X11 Framework done * * Revision 1.8 2000/03/22 07:33:50 reinelt * * FAQ added * new modules 'processor.c' contains all data processing * * Revision 1.7 2000/03/19 08:41:28 reinelt * * documentation available! README, README.MatrixOrbital, README.Drivers * added Skeleton.c as a starting point for new drivers * * Revision 1.6 2000/03/18 10:31:06 reinelt * * added sensor handling (for temperature etc.) * made data collecting happen only if data is used * (reading /proc/meminfo takes a lot of CPU!) * released lcd4linux-0.92 * * Revision 1.5 2000/03/18 08:07:04 reinelt * * vertical bars implemented * bar compaction improved * memory information implemented * * Revision 1.4 2000/03/17 09:21:42 reinelt * * various memory statistics added * * Revision 1.3 2000/03/13 15:58:24 reinelt * * release 0.9 * moved row parsing to parser.c * all basic work finished * * Revision 1.2 2000/03/10 17:36:02 reinelt * * first unstable but running release * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <limits.h> #include <errno.h> #include <signal.h> #include "cfg.h" #include "debug.h" #include "udelay.h" #include "display.h" #include "processor.h" char *release="LCD4Linux " VERSION " (c) 2000 Michael Reinelt <reinelt@eunet.at>"; char **my_argv; char *output=NULL; int got_signal=0; int debugging=0; int foreground=0; int tick, tack; static void usage(void) { printf ("%s\n", release); printf ("usage: lcd4linux [-h]\n"); printf (" lcd4linux [-l]\n"); printf (" lcd4linux [-d]\n"); printf (" lcd4linux [-c key=value] [-F] [-f config-file] [-o output-file] [-q] [-v]\n"); } int hello (void) { int i, x, y, flag; char *line1[] = { "* LCD4Linux V" VERSION " *", "LCD4Linux " VERSION, "LCD4Linux", "L4Linux", NULL }; char *line2[] = { "(c) 2000 M.Reinelt", "(c) M.Reinelt", NULL }; lcd_query (&y, &x, NULL, NULL, NULL, NULL); flag=0; for (i=0; line1[i]; i++) { if (strlen(line1[i])<=x) { lcd_put (1, (x-strlen(line1[i]))/2+1, line1[i]); flag=1; break; } } for (i=0; line2[i]; i++) { if (strlen(line2[i])<=x) { lcd_put (2, (x-strlen(line2[i]))/2+1, line2[i]); flag=1; break; } } if (flag) lcd_flush(); return flag; } #ifdef USE_OLD_UDELAY void calibrate (void) { int i; unsigned long max=0; printf ("%s\n", release); printf ("calibrating delay loop:"); fflush(stdout); for (i=0; i<10; i++) { udelay_calibrate(); if (loops_per_usec>max) max=loops_per_usec; } printf (" Delay=%ld\n", max); } #endif void handler (int signal) { debug ("got signal %d", signal); got_signal=signal; } int main (int argc, char *argv[]) { char *cfg="/etc/lcd4linux.conf"; char *driver; int c, smooth; int quiet=0; // save arguments for restart my_argv=malloc(sizeof(char*)*(argc+1)); for (c=0; c<argc; c++) { my_argv[c]=strdup(argv[c]); } my_argv[c]=NULL; #ifdef USE_OLD_UDELAY while ((c=getopt (argc, argv, "c:dFf:hlo:qv"))!=EOF) { #else while ((c=getopt (argc, argv, "c:dFf:hlo:qv"))!=EOF) { #endif switch (c) { case 'c': if (cfg_cmd (optarg)<0) { fprintf (stderr, "%s: illegal argument -c %s\n", argv[0], optarg); exit(2); } break; case 'd': #ifdef USE_OLD_UDELAY calibrate(); exit(0); #else fprintf (stderr, "delay calibration no longer supported!\n"); exit(1); #endif case 'F': foreground++; break; case 'f': cfg=optarg; break; case 'h': usage(); exit(0); case 'l': printf ("%s\n", release); lcd_list(); exit(0); case 'o': output=optarg; break; case 'q': quiet++; break; case 'v': debugging++; break; default: exit(2); } } if (optind < argc) { fprintf (stderr, "%s: illegal option %s\n", argv[0], argv[optind]); exit(2); } if (!foreground) { pid_t i; int fd; debug ("going background..."); i=fork(); if (i<0) { error ("fork() failed: %s", strerror(errno)); exit (1); } if (i!=0) exit (0); // ignore nasty signals signal(SIGINT, SIG_IGN); signal(SIGQUIT, SIG_IGN); // detach stdin if (freopen("/dev/null", "r", stdin)==NULL) { error ("freopen (/dev/null) failed: %s", strerror(errno)); exit (1); } // detach stdout and stderr fd=open("/dev/null", O_WRONLY, 0666); if (fd==-1) { error ("open (/dev/null) failed: %s", strerror(errno)); exit (1); } fflush(stdout); fflush(stderr); dup2(fd, STDOUT_FILENO); dup2(fd, STDERR_FILENO); close(fd); } if (foreground) { info ("Version " VERSION " starting"); } else { info ("Version " VERSION " starting"); if (my_argv[0]==NULL || my_argv[0][0]!='/') { info ("invoked without full path; restart may not work!"); } } // set default values cfg_set ("row1", "*** %o %v ***"); cfg_set ("row2", "%p CPU %r MB RAM"); cfg_set ("row3", "Busy %cu%% $r10cu"); cfg_set ("row4", "Load %l1%L$r10l1"); if (cfg_read (cfg)==-1) exit (1); driver=cfg_get("display"); if (driver==NULL || *driver=='\0') { error ("%s: missing 'display' entry!", cfg_file()); exit (1); } debug ("initializing driver %s", driver); if (lcd_init(driver)==-1) { exit (1); } // now install our own signal handler signal(SIGHUP, handler); signal(SIGINT, handler); signal(SIGQUIT, handler); signal(SIGTERM, handler); tick=atoi(cfg_get("tick")?:"100"); tack=atoi(cfg_get("tack")?:"500"); process_init(); lcd_clear(); if (!quiet && hello()) { sleep (3); lcd_clear(); } debug ("starting main loop"); smooth=0; while (got_signal==0) { process (smooth); smooth+=tick; if (smooth>tack) smooth=0; usleep(tick*1000); } debug ("leaving main loop"); lcd_clear(); if (!quiet) hello(); lcd_quit(); if (got_signal==SIGHUP) { int i, j; debug ("restarting..."); // close all files on exec for (i=3; i<OPEN_MAX; i++) { if ((j=fcntl(i,F_GETFD,0))!=-1) fcntl(i,F_SETFD,j|FD_CLOEXEC); } execv (my_argv[0], my_argv); error ("execv() failed: %s", strerror(errno)); exit(1); } exit (0); }


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