[英]command line output validation in c#
我在实际命令提示符下的输出如下所示:
Name: My Software
Version: 1.0.1
Installed location: c:\my folder
我正在尝试通过C#代码获取此输出
System.Diagnostics.ProcessStartInfo procStartInfo = new System.Diagnostics.ProcessStartInfo("cmd", "/c " + "my command to execute");
// The following commands are needed to redirect the standard output.
// This means that it will be redirected to the Process.StandardOutput StreamReader.
procStartInfo.RedirectStandardOutput = true;
procStartInfo.UseShellExecute = false;
// Do not create the black window.
procStartInfo.CreateNoWindow = true;
// Now we create a process, assign its ProcessStartInfo and start it
System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo = procStartInfo;
proc.Start();
// Get the output into a string
string result = proc.StandardOutput.ReadToEnd();
string[] lines = result.Split(new string[] { System.Environment.NewLine, }, System.StringSplitOptions.None);
foreach (string tmp in lines)
{
if (tmp.Contains("Version"))
{
isAvailable= true;
}
}
我不想只检查一个版本标记,我试图获取版本值并进行比较,例如,如果该值为1.0.1,则我想要该值并与2.0.0进行比较。
我可以使用indexof
(例如result.IndexOf("Version:");
)-但这不能使我获得版本的价值
任何想法都会有所帮助。
您应该使用.NET版本类,并且使用CompareTo(Object)方法进行比较。
var input = new Regex(@"(?<=Version:)\s*(.*)").Matches(@"Name: My Software
Version: 1.0.1
Installed location: c:\my folder")[0].Value.Trim();
var a = new Version(input);
var b = new Version("2.0.0");
int comparison = a.CompareTo(b);
if(comparison > 0)
{
Console.WriteLine(a + " is a greater version.");
}
else if(comparison == 0)
{
Console.WriteLine(a + " and " + b +" are the same version.");
}
else
{
Console.WriteLine(b + " is a greater version.");
}
string versionText;
var stuff = tmp.Split(":");
if(stuff[0].Trim() == "Version")
{
isAvailable = true;
versionText = stuff[1].Trim();
}
if(versionText == expectedVersionText) // Do something specfic.
尝试如下...它将为您提供帮助...
通过使用IndexOf
而不是Contains
检查单词。
if (tmp.IndexOf("Version") != -1)
{
isAvailable = true;
string[] info = tmp.Split(':');
string version = info[1].Trim();
Console.WriteLine(version);
}
您可能要使用正则表达式:
^Version:\s*(.*)$
应该与括号内的版本号匹配。
string sought = "Version:";
foreach (string tmp in lines)
{
if (tmp.Contains(sought))
{
int position = tmp.IndexOf(sought) + sought.Length;
string version = tmp.Substring(tmp.IndexOf(sought) + sought.Length);
string[] versionParts = version.Split('.');
VersionCompare(versionParts, new string[]{"2", "0", "0"});
}
}
/// <summary>Returns 0 if the two versions are equal, else a negative number if the first is smaller, or a positive value if the first is larder and the second is smaller.</summary>
private int VersionCompare(string[] left, string[] right)
{
for(int i = 0; i < Math.Min(left.Length, right.Length); ++i)
{
int leftValue = int.Parse(left[i]), rightValue = int.Parse(right[i]);
if(leftValue != rightValue) return leftValue - rightValue;
}
return left.Length - right.Length;
}
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