internal CommandPathSearch(
string commandName,
LookupPathCollection lookupPaths,
ExecutionContext context,
Collection <string>?acceptableCommandNames,
bool useFuzzyMatch)
{
_useFuzzyMatch = useFuzzyMatch;
string[] commandPatterns;
if (acceptableCommandNames != null)
{
// The name passed in is not a pattern. To minimize enumerating the file system, we
// turn the command name into a pattern and then match against extensions in PATHEXT.
// The old code would enumerate the file system many more times, once per possible extension.
if (Platform.IsWindows)
{
commandPatterns = new[] { commandName + ".*" };
}
else
{
// Porting note: on non-Windows platforms, we want to always allow just 'commandName'
// as an acceptable command name. However, we also want to allow commands to be
// called with the .ps1 extension, so that 'script.ps1' can be called by 'script'.
commandPatterns = new[] { commandName, commandName + ".ps1" };
}
_postProcessEnumeratedFiles = CheckAgainstAcceptableCommandNames;
_acceptableCommandNames = acceptableCommandNames;
}
else
{
commandPatterns = new[] { commandName };
_postProcessEnumeratedFiles = JustCheckExtensions;
}
// Note, discovery must be set before resolving the current directory
_context = context;
_patterns = commandPatterns;
_lookupPaths = lookupPaths;
ResolveCurrentDirectoryInLookupPaths();
_orderedPathExt = CommandDiscovery.PathExtensionsWithPs1Prepended;
// The same as in this.Reset()
_lookupPathsEnumerator = _lookupPaths.GetEnumerator();
_patternEnumerator = _patterns.GetEnumerator();
_currentDirectoryResults = Array.Empty <string>();
_currentDirectoryResultsEnumerator = _currentDirectoryResults.GetEnumerator();
_justReset = true;
}
internal IEnumerable<string> GetLookupDirectoryPaths()
{
LookupPathCollection paths = new LookupPathCollection();
string environmentVariable = Environment.GetEnvironmentVariable("PATH");
discoveryTracer.WriteLine("PATH: {0}", new object[] { environmentVariable });
if (((environmentVariable == null) || !string.Equals(this.pathCacheKey, environmentVariable, StringComparison.OrdinalIgnoreCase)) || (this.cachedPath == null))
{
this.cachedLookupPaths = null;
this.pathCacheKey = environmentVariable;
if (this.pathCacheKey != null)
{
string[] strArray = this.pathCacheKey.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
if (strArray != null)
{
this.cachedPath = new Collection<string>();
foreach (string str2 in strArray)
{
string item = str2.TrimStart(new char[0]);
this.cachedPath.Add(item);
paths.Add(item);
}
}
}
}
else
{
paths.AddRange(this.cachedPath);
}
if (this.cachedLookupPaths == null)
{
this.cachedLookupPaths = paths;
}
return this.cachedLookupPaths;
}
