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Add find file class to search for files

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Scan a folder for a file based on file name. First scan the files
in the current path, then search real directories and finally
search symlinks in that order. Goal is to locate important sysfs
files for things like brightness, battery capacity, lun files, etc

This implementation just scans for the brightness file for the LCD

Change-Id: I8ed3e74a2e2851d58b443718b6e92b50a5491f08
This commit is contained in:
Ethan Yonker
2014-04-15 15:26:44 +02:00
committed by Gerrit Code Review
parent 1eba56f577
commit 00028b4adb
4 changed files with 146 additions and 4 deletions
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data.cpp
+19 -4
View File
@@ -45,6 +45,7 @@
#ifndef TW_NO_SCREEN_TIMEOUT
#include "gui/blanktimer.hpp"
#endif
#include "find_file.hpp"
#ifdef TW_USE_MODEL_HARDWARE_ID_FOR_DEVICE_ID
#include "cutils/properties.h"
@@ -940,17 +941,31 @@ void DataManager::SetDefaultValues()
#ifndef TW_MAX_BRIGHTNESS
#define TW_MAX_BRIGHTNESS 255
#endif
string findbright;
if (strcmp(EXPAND(TW_BRIGHTNESS_PATH), "/nobrightness") != 0) {
LOGINFO("TW_BRIGHTNESS_PATH := %s\n", EXPAND(TW_BRIGHTNESS_PATH));
findbright = EXPAND(TW_BRIGHTNESS_PATH);
LOGINFO("TW_BRIGHTNESS_PATH := %s\n", findbright.c_str());
if (!TWFunc::Path_Exists(findbright)) {
LOGINFO("Specified brightness file '%s' not found.\n", findbright.c_str());
findbright = "";
}
}
if (findbright.empty()) {
// Attempt to locate the brightness file
findbright = Find_File::Find("brightness", "/sys/class/backlight");
}
if (findbright.empty()) {
LOGINFO("Unable to locate brightness file\n");
mConstValues.insert(make_pair("tw_has_brightnesss_file", "0"));
} else {
LOGINFO("Found brightness file at '%s'\n", findbright.c_str());
mConstValues.insert(make_pair("tw_has_brightnesss_file", "1"));
mConstValues.insert(make_pair("tw_brightness_file", EXPAND(TW_BRIGHTNESS_PATH)));
mConstValues.insert(make_pair("tw_brightness_file", findbright));
ostringstream maxVal;
maxVal << TW_MAX_BRIGHTNESS;
mConstValues.insert(make_pair("tw_brightness_max", maxVal.str()));
mValues.insert(make_pair("tw_brightness", make_pair(maxVal.str(), 1)));
mValues.insert(make_pair("tw_brightness_pct", make_pair("100", 1)));
} else {
mConstValues.insert(make_pair("tw_has_brightnesss_file", "0"));
}
#endif
mValues.insert(make_pair(TW_MILITARY_TIME, make_pair("0", 1)));