/// <summary>
/// 词组词频输出
/// </summary>
/// <param name="path"></param>
/// <param name="n"></param>
/// <returns></returns>
private static Dictionary <string, int> CountPhrase(string path, int n)
{
List <string> list = new List <string>();//存储符合要求的单词集合
list = TXtOperate.Iswords(path);
Dictionary <string, int> frequencies = new Dictionary <string, int>(StringComparer.OrdinalIgnoreCase); string s = "";//将长度为n的词组存入字符串
for (int i = 0; i <= list.Count - n; i++)
{
int j;
for (s = list[i], j = 0; j < n - 1; j++)
{
s += " " + list[i + j + 1];
}
if (frequencies.ContainsKey(s))
{
frequencies[s]++;
}
else
{
frequencies[s] = 1;
}
}
return(frequencies);
}
/// <summary>
/// 单词词频输出
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static Dictionary <string, int> CountWord(string path)
{
List <string> list = new List <string>();
list = TXtOperate.Iswords(path);
Dictionary <string, int> frequencies = new Dictionary <string, int>(StringComparer.OrdinalIgnoreCase);
foreach (string word in list)
{
if (frequencies.ContainsKey(word))
{
frequencies[word]++;
}
else
{
frequencies[word] = 1;
}
}
return(frequencies);
}
public static void Main(string[] args)
{
//args = new string[] { "-i", "input.txt","-o","out.txt","-n","3","-m","2" };//测试代码
int countLine = 0;
string str = "";
string path = "";
int phraseNum = 0;
int wordFreNum = 0;
for (int i = 0; i < args.Length; i += 2)
{
if (args[i].StartsWith("-"))
{
switch (args[i])
{
case "-m":
phraseNum = int.Parse(args[i + 1]);
break;
case "-n":
wordFreNum = int.Parse(args[i + 1]);
break;
case "-help":
Console.WriteLine("-------------------**********-------------------"); //分隔线
Console.WriteLine("词频管理命令行程序(v3.0)帮助界面：\t");
Console.WriteLine("作者：Admin,其保留对该程序的所有权利");
Console.WriteLine("-------------------**********-------------------"); //分隔线
Console.WriteLine("参数说明：");
Console.WriteLine("使用-i参数设定读入的文件路径 （必要） 格式：-i [file]");
Console.WriteLine("使用-o参数设定生成文件的存储路径 （必要） 格式：-o [file]");
Console.WriteLine("使用-m参数设定统计的词组长度 （非必要） 格式：-m [number]");
Console.WriteLine("使用-n参数设定输出的单词数量 （非必要） 格式：-n [number]");
Console.WriteLine("参数顺序对结果没有影响。");
break;
case "-i":
path = args[i + 1];
break;
case "-o":
break;
default:
Console.WriteLine("命令行参数输入错误，请重新输入！");
Console.WriteLine("命令输入格式为：exename.exe -[命令代号] [命令对应内容]，命令使用可无序。但-i和-o命令是必须的");
Console.WriteLine("要查看有关命令行参数的更多内容，请在exe可执行文件后输入-help命令！");
break;
}
}
}
if (File.Exists(path))
{
StreamReader sr = new StreamReader(path, Encoding.Default);
string line;
while ((line = sr.ReadLine()) != null)
{
countLine++;
str += line + "\n";
}
sr.Close();
str = str.Trim();
//如果含有-o参数 将显示内容输出到文件中
for (int i = 0; i < args.Length; i++)
{
if (args[i] == "-o")
{
FileStream fs = new FileStream(args[i + 1], FileMode.Create);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("Characters:" + TXtOperate.CountChar(str));
sw.WriteLine("Lines: " + countLine);
sw.WriteLine("Words:" + TXtOperate.CountSumofWords(str));
//如果有-n参数且有大于零的输入，调用PutNwords函数
if (wordFreNum > 0)
{
Dictionary <string, int> item = CountWord(str).OrderByDescending(r => r.Value).ThenBy(r => r.Key).ToDictionary(r => r.Key, r => r.Value);
int size = 0;
foreach (KeyValuePair <string, int> entry in item)
{
string word = entry.Key;
int frequency = entry.Value;
size++;
if (size > wordFreNum)
{
break;
}
sw.WriteLine(word + ":" + frequency);
}
}
//如果有-n参数且大于零的输入，则调用phraseNum函数
if (phraseNum > 0)
{
Dictionary <string, int> item = CountPhrase(str, phraseNum).OrderByDescending(r => r.Value).ThenBy(r => r.Key).ToDictionary(r => r.Key, r => r.Value);
foreach (KeyValuePair <string, int> entry in item)
{
string word = entry.Key;
int frequency = entry.Value;
sw.WriteLine(word + ":" + frequency);
}
}
sw.Flush();//关闭流
sw.Close();
Console.WriteLine("文件已创建成功！");
}
}
}
Console.ReadKey();
}