Hello All the following is an alternative to Ludovic Rousseau's keyboard_brigthness shell-script (1). Advantages: - slightly shorter name - allows toggle - can be set SUID and bound to keyboard shortcuts via xbindkeys
Let me know what you think! cheers Hannes 1) http://mactel-linux.svn.sourceforge.net/viewvc/mactel-linux/trunk/tools/keyboard_brigthness?view=markup
/*
* Apple Macbook Pro keyboard illumination control
*
* Copyright (C) 2006 Hannes Wyss <[EMAIL PROTECTED]>
*
* 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 of the License, 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.
*
*/
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BRIGHTNESS "/sys/class/leds/smc:kbd_backlight/brightness"
#define WARNFMT "Warning: invalid brightness value '%i'\n"
#define STORE "/var/lib/keylight"
void usage(char* argv0) {
printf("Apple Macbook (pro) keyboard illumination " VERSION);
printf("\n");
printf("Usage:\n");
printf("%s -h : display usage information\n", argv0);
printf("%s : read current brightness value\n", argv0);
printf("%s n : set brightness to n [0-255]\n", argv0);
printf("%s +n : increase brightness by n\n", argv0);
printf("%s -n : decrease brightness by n\n", argv0);
printf("%s toggle: toggle between current brightness value and 0\n",
argv0);
}
int set_level(int value) {
FILE *fptr;
if((fptr = fopen(BRIGHTNESS, "w"))) {
if(value < 0) {
fprintf(stderr, WARNFMT, value);
value = 0;
}
if(value > 255) {
fprintf(stderr, WARNFMT, value);
value = 255;
}
fprintf(fptr, "%i", value);
return value;
} else {
err(errno, "%s", BRIGHTNESS);
}
}
int write_store(int value) {
FILE *fptr;
int bytes;
if((fptr = fopen(STORE, "w"))) {
bytes = fprintf(fptr, "%i", value);
fclose(fptr);
return bytes;
} else {
warn("%s", STORE);
return 0;
}
}
int read_store() {
FILE *fptr;
char stored[16];
int value = -1;
if((fptr = fopen(STORE, "r"))) {
if(fgets(stored, 16, fptr)) {
value = atoi(stored);
}
fclose(fptr);
} else {
warn("%s", STORE);
}
return value;
}
int toggle(int value) {
int stored;
if(value == 0) {
stored = read_store();
if(stored >= 0) {
value = set_level(stored);
} else {
fprintf(stderr, "Warning: No valid value found in: %s\n",
STORE);
}
} else {
value = set_level(0);
}
return value;
}
int dispatch(char** argv, int value) {
char *input = argv[1];
if(strncmp("-h", input, 2) == 0) {
usage(argv[0]);
exit(0);
} else if(strncmp("toggle", input, 6) == 0) {
value = toggle(value);
} else if(strncmp("-", input, 1) == 0
|| strncmp("+", input, 1) == 0) {
value = set_level(value + atoi(input));
write_store(value);
} else {
value = set_level(atoi(input));
write_store(value);
}
return value;
}
int main(int argc, char** argv) {
FILE *fptr;
char sysvalue[16];
int value;
if((fptr = fopen(BRIGHTNESS, "r"))) {
if(fgets(sysvalue, 16, fptr)) {
value = atoi(sysvalue);
}
fclose(fptr);
if(argc > 1) {
value = dispatch(argv, value);
}
printf("%i\n", value);
} else {
err(errno, "%s", BRIGHTNESS);
}
return 0;
}
Makefile
Description: Binary data
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