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freebsd/usr.sbin/apmd/apmdlex.l
Nick Sayer 719b9dc1af Add battery state monitoring to apmd.
The new syntax available in the config file is:

apm_battery [0-9]+(%|[Mm) (dis|)charging { ... }

The stuff in the braces is the same as the existing case. nn% checks for
a certain percentage of life remaining and nnM checks for a cerain
number of minutes remaining. Specifying "discharge" means that you're
interested in knowing when the battery reaches a certain level while AC
power is off, "charging" the opposite.

The man page needs to be updated.

The code can be fooled. If you SIGHUP the daemon and the battery level
matches a rule it will be performed once per SIGHUP. If the battery
level matches a rule and you repeatedly apply and take away AC power,
the rule will be run once per occurance. This, however, is a feature.
:-) The code also only runs when select() times out, so getting APM
events more often than the timeout interval will result in the rules not
being run. These are things that remain to be overcome.
2001-05-15 05:13:45 +00:00

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%{
/*-
* APM (Advanced Power Management) Event Dispatcher
*
* Copyright (c) 1999 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
* Copyright (c) 1999 KOIE Hidetaka <koie@suri.co.jp>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <string.h>
#include <syslog.h>
#include <bitstring.h>
#include "apmd.h"
#include "y.tab.h"
int lineno;
int first_time;
%}
%s TOP
%%
%{
if (first_time) {
BEGIN TOP;
lineno = 1;
first_time = 0;
}
%}
<TOP>[ \t]+ ;
<TOP>\n lineno++;
<TOP>, { return COMMA; }
<TOP>; { return SEMICOLON; }
<TOP>#.*$ ;
<TOP>apm_event { return APMEVENT; }
<TOP>NOEVENT { yylval.ev = EVENT_NOEVENT; return EVENT; }
<TOP>STANDBYREQ { yylval.ev = EVENT_STANDBYREQ; return EVENT; }
<TOP>SUSPENDREQ { yylval.ev = EVENT_SUSPENDREQ; return EVENT; }
<TOP>NORMRESUME { yylval.ev = EVENT_NORMRESUME; return EVENT; }
<TOP>CRITRESUME { yylval.ev = EVENT_CRITRESUME; return EVENT; }
<TOP>BATTERYLOW { yylval.ev = EVENT_BATTERYLOW; return EVENT; }
<TOP>POWERSTATECHANGE { yylval.ev = EVENT_POWERSTATECHANGE; return EVENT; }
<TOP>UPDATETIME { yylval.ev = EVENT_UPDATETIME; return EVENT; }
<TOP>CRITSUSPEND { yylval.ev = EVENT_CRITSUSPEND; return EVENT; }
<TOP>USERSTANDBYREQ { yylval.ev = EVENT_USERSTANDBYREQ; return EVENT; }
<TOP>USERSUSPENDREQ { yylval.ev = EVENT_USERSUSPENDREQ; return EVENT; }
<TOP>STANDBYRESUME { yylval.ev = EVENT_STANDBYRESUME; return EVENT; }
<TOP>CAPABILITIESCHANGE { yylval.ev = EVENT_CAPABILITIESCHANGE; return EVENT; }
<TOP>apm_battery { return APMBATT; }
<TOP>charging { return BATTCHARGE; }
<TOP>discharging { return BATTDISCHARGE; }
<TOP>[0-9]+% {
yylval.i = atoi(yytext);
return BATTPERCENT;
}
<TOP>[0-9]+[Mm] {
yylval.i = -atoi(yytext);
return BATTTIME;
}
<TOP>exec { return EXECCMD; }
<TOP>reject { return REJECTCMD; }
<TOP>\{ { return BEGINBLOCK; }
<TOP>\} { return ENDBLOCK; }
<TOP>\"[^"]+\" {
int len = strlen(yytext) - 2;
if ((yylval.str = (char *) malloc(len + 1)) == NULL)
goto out;
memcpy(yylval.str, yytext + 1, len);
yylval.str[len] = '\0';
out:
return STRING;
}
<TOP>[^"{},;#\n\t ]+ { yylval.str = strdup(yytext); return UNKNOWN; }
%%
void
yyerror(const char *s)
{
syslog(LOG_ERR, "line %d: %s%s %s.\n", lineno, yytext, yytext?":":"", s);
}