<?php
/*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
*/
function get_contents($field_name,$filestring)
{
# stripos(string,find,start)
# 返回字符串在另一个字符串中第一次出现的位置。
# ------------------------------------------
# | 参数 | 描述 |
# ------------------------------------------
# | string | 必需。规定被搜索的字符串。 |
# | find | 必需。规定要查找的字符。 |
# | start | 可选。规定开始搜索的位置。 |
# ------------------------------------------
# 如果没有找到该字符串，则返回 false。
$pos = stripos($filestring,$field_name."=");
if($pos != false)
{
$pos += strlen($field_name."=");
# 找到当前行结束的地方
$newlinepos = stripos($filestring,"\n",$pos);
if($newlinepos == -1)
$newlinepos = stripos($filestring,"\r",$pos);
# substr(string,start,length)
# ---------------------------------------------------
# | 参数 | 描述 |
# ---------------------------------------------------
# | string | 必需。规定要返回其中一部分的字符串。 |
# | start | 必需。规定在字符串的何处开始。 |
# ---------------------------------------------------
$returnedstring = substr($filestring,$pos,$newlinepos-$pos);
return $returnedstring;
}
return -1;
}
# 每个app都有一个这样的对应文件
system("find -name '*.desktop' -print > catdesktop.txt");
if(filesize("catdesktop.txt") == 0)
{
echo "No .desktop files found";
return;
}
# 读取文件
$handle = fopen("catdesktop.txt", "rb");
$contents = fread($handle,filesize("catdesktop.txt"));
fclose($handle);
# unlink() 函数删除文件。
# 若成功，则返回 true，失败则返回 false。
unlink('catdesktop.txt');
# 函数把字符串打散为数组。
# explode(separator,string,limit)
# ---------------------------------------------------------------------------------
# | 参数 | 描述 |
# |--------------------------------------------------------------------------------
# | separator | 必需。规定在哪里分割字符串。 |
# |-------------------------------------------------------------------------------|
# | string | 必需。要分割的字符串。 |
# |-------------------------------------------------------------------------------|
# | limit | 可选。规定所返回的数组元素的数目。 |
# | | 可能的值： |
# | | 大于 0 - 返回包含最多 limit 个元素的数组 |
# | | 小于 0 - 返回包含除了最后的 -limit 个元素以外的所有元素的数组 |
# | | 0 - 返回包含一个元素的数组 |
# ---------------------------------------------------------------------------------
$contents = explode("\n",$contents);
# 这里strlen($contents[$x])>0限制了数据之间不能出现空行
for($x = 0;$x<count($contents)&&strlen($contents[$x])>0;$x++)
{
# 从这里可以看出catdesktop.txt文件里是一些文件路径的配置
$handle = fopen($contents[$x], "rb");
$dotdesktop = fread($handle,filesize($contents[$x]));
fclose($handle);
# 应用名
$top["Name"] = get_contents("Name",$dotdesktop);
# 序号
if(get_contents("X-MATRIX-DisplayPriority",$dotdesktop)!=-1)
$top["Order"] = get_contents("X-MATRIX-DisplayPriority",$dotdesktop);
else
$top["Order"] = 999;
# 图标的绝对路径
$icon_path = get_contents("Icon",$dotdesktop);
$webserver_root = "/usr/share/matrix-gui-2.0/";
# 获取Icon的相对路径
$top["Icon"] = substr($icon_path,strlen($webserver_root));
# 类型
$type = strtolower(get_contents("Type",$dotdesktop));
$top["Type"] = $type;
# 分类
$category = get_contents("Categories",$dotdesktop);
$category = trim(strtolower($category));
if($type == "directory")
{
$top["Category"] = get_contents("X-MATRIX-CategoryTarget",$dotdesktop);
}elseif($type == "application")
{
# 可执行程序的执行命令
$top["Exec"] = get_contents("Exec",$dotdesktop);
# 可执行程序的类型
$top["ProgramType"] = get_contents("ProgramType",$dotdesktop);
# 连接描述
$top["Description_Link"] = get_contents("X-MATRIX-Description",$dotdesktop);
# 锁
$top["Lock"] = get_contents("X-MATRIX-LOCK",$dotdesktop);
}
# 非分类放在主菜单中，其他的放在对应的分类中
# 这里采用PHP的动态添加数组成员的方法
if($category == -1)
$application["main_menu"]["apps"][] = $top;
else
$application[$category]["apps"][] = $top;
# 用来销毁变量的，但很多时候，这个函数只把变量给销毁了，内存中存放的该变量的值
# 仍然没有销毁，也就是没能达到我们想要的释放内存的效果。
unset($top);
}
# 主要是完成数字大小的比较
function cmp($a, $b)
{
if($a["Order"] < $b["Order"])
return -1;
elseif($a["Order"] == $b["Order"])
return 0;
elseif($a["Order"] > $b["Order"])
return 1;
}
foreach ($application as $key => $value) {
# 使用用户自定义的函数对数组排序,自动的函数名叫cmp，
# 其实就是前面那个数字比较函数
usort($application[$key]["apps"], "cmp");
}
# 将php对象编码成json对象，写到json.txt文件里面去
$ourFileName = "json.txt";
# die() 函数输出一条消息，并退出当前脚本。
# 该函数是 exit() 函数的别名。
$ourFileHandle = fopen($ourFileName, 'w') or die("can't open file");
fwrite($ourFileHandle,json_encode($application));
fclose($ourFileHandle);
?>
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