mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
[lcd4linux @ 2004-04-09 06:23:28 by reinelt]
removed old exec stuff git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@413 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
This commit is contained in:
reinelt
196
exec.c
196
exec.c
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/* $Id: exec.c,v 1.13 2004/03/03 03:47:04 reinelt Exp $
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*
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* exec ('x*') functions
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*
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* Copyright 2001 Leopold T<>tsch <lt@toetsch.at>
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*
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* This file is part of LCD4Linux.
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*
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* LCD4Linux is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LCD4Linux is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Log: exec.c,v $
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* Revision 1.13 2004/03/03 03:47:04 reinelt
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* big patch from Martin Hejl:
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* - use qprintf() where appropriate
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* - save CPU cycles on gettimeofday()
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* - add quit() functions to free allocated memory
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* - fixed lots of memory leaks
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*
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* Revision 1.12 2004/01/29 04:40:02 reinelt
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* every .c file includes "config.h" now
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*
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* Revision 1.11 2004/01/09 04:16:06 reinelt
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* added 'section' argument to cfg_get(), but NULLed it on all calls by now.
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*
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* Revision 1.10 2003/10/05 17:58:50 reinelt
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* libtool junk; copyright messages cleaned up
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*
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* Revision 1.9 2003/02/22 07:53:10 reinelt
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* cfg_get(key,defval)
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*
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* Revision 1.8 2003/02/05 04:31:38 reinelt
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*
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* T_EXEC: remove trailing CR/LF
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* T_EXEC: deactivated maxlen calculation (for I don't understand what it is for :-)
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*
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* Revision 1.7 2002/04/29 11:00:28 reinelt
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*
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* added Toshiba T6963 driver
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* added ndelay() with nanosecond resolution
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*
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* Revision 1.6 2001/03/15 09:13:22 ltoetsch
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* delay first exec for faster start
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*
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* Revision 1.5 2001/03/13 08:34:15 reinelt
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*
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* corrected a off-by-one bug with sensors
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*
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* Revision 1.4 2001/03/09 14:24:49 ltoetsch
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* exec: Scale_x ->Min/Max_x
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*
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* Revision 1.3 2001/03/08 15:25:38 ltoetsch
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* improved exec
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*
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* Revision 1.2 2001/03/08 08:39:54 reinelt
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*
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* fixed two typos
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*
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* Revision 1.1 2001/03/07 18:10:21 ltoetsch
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* added e(x)ec commands
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*
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*
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* This implements the x1 .. x9 commands
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* config options:
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* x1 .. x9 command to execute
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* Tick_x1 ... 9 delay in ticks
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* Delay_x1 .. 9 delay in seconds
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* Max_x1 .. 9 max for scaling bars (100)
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* Min_x1 .. 9 min for scaling bars (0)
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <ctype.h>
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#include <errno.h>
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#define IN_EXEC
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#include "exec.h"
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#include "debug.h"
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#include "cfg.h"
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int Exec(int index, char buff[EXEC_TXT_LEN], double *val)
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{
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static time_t now[EXECS+1];
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static int errs[EXECS+1];
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static int ticks[EXECS+1];
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char *command, *strticks;
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char xn[20];
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char env[EXEC_TXT_LEN];
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FILE *pipe;
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size_t len;
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int i;
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if (index < 0 || index > EXECS)
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return -1;
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if (errs[index])
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return -1;
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/* first time ? */
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if (now[index] == 0) { /* not first time, to give faster a chance */
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now[index] = -1;
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return 0;
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}
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if (now[index] > 0) {
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/* delay in Ticks ? */
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sprintf(xn, "Tick_x%d", index);
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strticks = cfg_get(NULL, xn, NULL);
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if (p && *p) {
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if (ticks[index]++ % atoi(strticks) != 0) {
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free(strticks);
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return 0;
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}
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free(strticks);
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}
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else {
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free(strticks);
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sprintf(xn, "Delay_x%d", index);
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/* delay in Delay_x* sec ? */
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if (time(NULL) <= now[index] + atoi(cfg_get(NULL, xn, "1"))) {
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return 0;
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}
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}
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}
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time(&now[index]);
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*val = -1;
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sprintf(xn, "x%d", index);
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command = cfg_get(NULL, xn, NULL);
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if (!command || !*command) {
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error("Empty command for 'x%d'", index);
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errs[index]++;
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if (command) free(command);
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return -1;
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}
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for (i = 1; i < index; i++) {
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sprintf(env, "X%d=%.*s", i, EXEC_TXT_LEN-10, exec[i].s);
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putenv(env);
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}
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putenv("PATH=/usr/local/bin:/usr/bin:/bin");
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pipe = popen(command, "r");
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if (pipe == NULL) {
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error("Couldn't run pipe '%s':\n%s", command, strerror(errno));
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errs[index]++;
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free(command);
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return -1;
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}
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len = fread(buff, 1, EXEC_TXT_LEN-1, pipe);
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if (len <= 0) {
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pclose(pipe);
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error("Couldn't fread from pipe '%s', len=%d", command, len);
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errs[index]++;
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*buff = '\0';
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free(command);
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return -1;
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}
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pclose(pipe);
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buff[len] = '\0';
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// remove trailing CR/LF
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while (buff[len-1]=='\n' || buff[len-1]=='\r') {
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buff[--len]='\0';
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}
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debug("%s: <%s> = '%s'",xn,command,buff);
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if (isdigit(*buff)) {
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double max, min;
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*val = atof(buff);
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sprintf(xn, "Max_x%d", index);
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max = atof(cfg_get(NULL, xn, "100"));
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sprintf(xn, "Min_x%d", index);
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min = atof(cfg_get(NULL, xn, "0"));
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if (max != min)
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*val = (*val - min)/(max - min);
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}
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free(command);
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return 0;
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}
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54
exec.h
54
exec.h
@@ -1,54 +0,0 @@
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/* $Id: exec.h,v 1.3 2003/10/05 17:58:50 reinelt Exp $
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*
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* exec ('x*') functions
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*
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* Copyright 2001 Leopold T<>tsch <lt@toetsch.at>
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*
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* This file is part of LCD4Linux.
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*
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* LCD4Linux is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* LCD4Linux is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Log: exec.h,v $
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* Revision 1.3 2003/10/05 17:58:50 reinelt
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* libtool junk; copyright messages cleaned up
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*
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* Revision 1.2 2001/03/08 15:25:38 ltoetsch
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* improved exec
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*
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* Revision 1.1 2001/03/07 18:10:21 ltoetsch
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* added e(x)ec commands
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*
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*
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*/
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#ifndef _EXEC_H
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#define _EXEC_H_
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#define EXECS 9
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#define EXEC_TXT_LEN 256
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#ifdef IN_EXEC
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#define EXTERN extern
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#else
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#define EXTERN
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#endif
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EXTERN struct { char s[EXEC_TXT_LEN]; double val; } exec[EXECS+1];
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int Exec (int index, char txt[EXEC_TXT_LEN], double *val);
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#endif
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