mirror of
https://github.com/netfun2000/lcd4linux.git
synced 2026-02-27 09:44:34 +08:00
1a47930ac4
exec: Scale_x ->Min/Max_x git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@106 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/* $Id: exec.c,v 1.4 2001/03/09 14:24:49 ltoetsch Exp $
|
|
*
|
|
* exec ('x*') functions
|
|
*
|
|
* Copyright 2001 by Leopold Tötsch (lt@toetsch.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: exec.c,v $
|
|
* Revision 1.4 2001/03/09 14:24:49 ltoetsch
|
|
* exec: Scale_x ->Min/Max_x
|
|
*
|
|
* Revision 1.3 2001/03/08 15:25:38 ltoetsch
|
|
* improved exec
|
|
*
|
|
* Revision 1.2 2001/03/08 08:39:54 reinelt
|
|
*
|
|
* fixed two typos
|
|
*
|
|
* Revision 1.1 2001/03/07 18:10:21 ltoetsch
|
|
* added e(x)ec commands
|
|
*
|
|
*
|
|
* This implements the x1 .. x9 commands
|
|
* config options:
|
|
* x1 .. x9 command to execute
|
|
* Tick_x1 ... 9 delay in ticks
|
|
* Delay_x1 .. 9 delay in seconds
|
|
* Max_x1 .. 9 max for scaling bars (100)
|
|
* Min_x1 .. 9 min for scaling bars (0)
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#define IN_EXEC
|
|
#include "exec.h"
|
|
#include "debug.h"
|
|
#include "cfg.h"
|
|
|
|
|
|
int Exec(int index, char buff[EXEC_TXT_LEN], double *val)
|
|
{
|
|
static time_t now[EXECS+1];
|
|
static int errs[EXECS+1];
|
|
static int ticks[EXECS+1];
|
|
char *command, *p;
|
|
char xn[20];
|
|
char env[EXEC_TXT_LEN];
|
|
FILE *pipe;
|
|
size_t len;
|
|
int i;
|
|
|
|
if (index < 1 || index > EXECS)
|
|
return -1;
|
|
if (errs[index])
|
|
return -1;
|
|
|
|
/* first time ? */
|
|
if (now[index] != 0) {
|
|
/* delay in Ticks ? */
|
|
sprintf(xn, "Tick_x%d", index);
|
|
p = cfg_get(xn);
|
|
if (p && *p) {
|
|
if (ticks[index]++ % atoi(p) != 0)
|
|
return 0;
|
|
}
|
|
else {
|
|
sprintf(xn, "Delay_x%d", index);
|
|
/* delay in Delay_x* sec ? */
|
|
if (time(NULL) <= now[index] + atoi(cfg_get(xn)?:"1"))
|
|
return 0;
|
|
}
|
|
}
|
|
time(&now[index]);
|
|
*val = -1;
|
|
|
|
sprintf(xn, "x%d", index);
|
|
command = cfg_get(xn);
|
|
debug("%s:'%s'",xn,command);
|
|
|
|
if (!command || !*command) {
|
|
error("Empty command for 'x%d'", index);
|
|
errs[index]++;
|
|
return -1;
|
|
}
|
|
for (i = 1; i < index; i++) {
|
|
sprintf(env, "X%d=%.*s", i, EXEC_TXT_LEN-10, exec[i].s);
|
|
putenv(env);
|
|
}
|
|
putenv("PATH=/usr/local/bin:/usr/bin:/bin");
|
|
pipe = popen(command, "r");
|
|
if (pipe == NULL) {
|
|
error("Couldn't run pipe '%s':\n%s", command, strerror(errno));
|
|
errs[index]++;
|
|
return -1;
|
|
}
|
|
len = fread(buff, 1, EXEC_TXT_LEN-1, pipe);
|
|
if (len <= 0) {
|
|
pclose(pipe);
|
|
error("Couldn't fread from pipe '%s', len=%d", command, len);
|
|
errs[index]++;
|
|
*buff = '\0';
|
|
return -1;
|
|
}
|
|
pclose(pipe);
|
|
buff[len] = '\0';
|
|
for (p = buff ; *p && isspace(*p); p++)
|
|
;
|
|
if (isdigit(*p)) {
|
|
double max, min;
|
|
*val = atof(p);
|
|
sprintf(xn, "Max_x%d", index);
|
|
max = atof(cfg_get(xn)?:"100")?:100;
|
|
sprintf(xn, "Min_x%d", index);
|
|
min = atof(cfg_get(xn)?:"0");
|
|
if (max != min)
|
|
*val = (*val - min)/(max - min);
|
|
}
|
|
return 0;
|
|
}
|
|
|