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Command knows its command resolution strategy

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A command may be resolved from a nuget package, from the executing
assembly directory, or from the path.
This commit is contained in:
Mihai Codoban 2015-12-14 15:44:58 -08:00
parent c71709388b
commit 197a02807f
1 changed files with 36 additions and 8 deletions
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44
src/Microsoft.DotNet.Cli.Utils/Command.cs
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@ -21,9 +21,24 @@ namespace Microsoft.DotNet.Cli.Utils
private readonly StreamForwarder _stdOut;
private readonly StreamForwarder _stdErr;
public enum CommandResolutionStrategy
{
//command loaded from a nuget package
NugetPackage,
//command loaded from the same directory as the executing assembly
BaseDirectory,
//command loaded from path
Path,
//command not found
None
}
private bool _running = false;
private Command(string executable, string args)
private Command(string executable, string args, CommandResolutionStrategy commandResolution)
{
// Set the things we need
var psi = new ProcessStartInfo()
@ -41,6 +56,8 @@ namespace Microsoft.DotNet.Cli.Utils
_stdOut = new StreamForwarder();
_stdErr = new StreamForwarder();
CommandResolution = commandResolution;
}
public static Command Create(string executable, IEnumerable<string> args, NuGetFramework framework = null)
@ -50,20 +67,25 @@ namespace Microsoft.DotNet.Cli.Utils
public static Command Create(string executable, string args, NuGetFramework framework = null)
{
ResolveExecutablePath(ref executable, ref args, framework);
return new Command(executable, args);
var commandResolution = CommandResolutionStrategy.None;
ResolveExecutablePath(ref executable, ref args, ref commandResolution, framework);
return new Command(executable, args, commandResolution);
}
private static void ResolveExecutablePath(ref string executable, ref string args, NuGetFramework framework = null)
private static void ResolveExecutablePath(ref string executable, ref string args, ref CommandResolutionStrategy commandResolution, NuGetFramework framework = null)
{
executable =
ResolveExecutablePathFromProject(executable, framework) ??
ResolveExecutableFromPath(executable, ref args);
ResolveExecutablePathFromProject(executable, framework, ref commandResolution) ??
ResolveExecutableFromPath(executable, ref args, ref commandResolution);
}
private static string ResolveExecutableFromPath(string executable, ref string args)
private static string ResolveExecutableFromPath(string executable, ref string args, ref CommandResolutionStrategy commandResolution)
{
commandResolution = CommandResolutionStrategy.Path;
foreach (string suffix in Constants.RunnableSuffixes)
{
var fullExecutable = Path.GetFullPath(Path.Combine(
@ -72,6 +94,8 @@ namespace Microsoft.DotNet.Cli.Utils
if (File.Exists(fullExecutable))
{
executable = fullExecutable;
commandResolution = CommandResolutionStrategy.BaseDirectory;
// In priority order we've found the best runnable extension, so break.
break;
@ -93,7 +117,7 @@ namespace Microsoft.DotNet.Cli.Utils
return executable;
}
private static string ResolveExecutablePathFromProject(string executable, NuGetFramework framework)
private static string ResolveExecutablePathFromProject(string executable, NuGetFramework framework, ref CommandResolutionStrategy commandResolution)
{
if (framework == null) return null;
@ -125,6 +149,8 @@ namespace Microsoft.DotNet.Cli.Utils
var commandPath = commandPackage.Library.Files
.First(f => Path.GetFileName(f) == commandName + FileNameSuffixes.DotNet.Exe);
commandResolution = CommandResolutionStrategy.NugetPackage;
return Path.Combine(projectContext.PackagesDirectory, commandPackage.Path, commandPath);
}
@ -286,6 +312,8 @@ namespace Microsoft.DotNet.Cli.Utils
return this;
}
public CommandResolutionStrategy CommandResolution { get; }
private string FormatProcessInfo(ProcessStartInfo info)
{
if (string.IsNullOrWhiteSpace(info.Arguments))