Merge branch 'qdls'

This commit is contained in:
Valerie Wolfe 2024-06-11 09:12:45 -04:00
commit fa743c5a34
5 changed files with 113 additions and 0 deletions

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@ -11,3 +11,7 @@ paths like missing support for symbolic links, mismatched path separators,
inability to handle spaces in directory names, and resolves C-drive paths to
their normal DOS form.
## `qdls`
A DOS clone of `ls` that hides Windows hidden files.

4
qdls/.gitignore vendored Normal file
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obj/
bin/
.idea/

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qdls/Program.cs Normal file
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using Qdls;
// collect args and consume flags
List<string> arguments = args.ToList();
bool showHidden = Util.CheckFlag(arguments, "-a", "--all", "-A");
// default to "." if no target args
if(arguments.Count == 0)
arguments = ["."];
// run on targets
foreach(var arg in arguments) {
// don't try to list nonexistent entries or files
if(!Path.Exists(arg)) {
Console.WriteLine($"'{arg}': does not exist");
continue;
}
if(File.Exists(arg)) {
Console.WriteLine($"'{arg}': is file");
continue;
}
// fetch children
var children = Directory.GetFileSystemEntries(arg);
// exclude hidden files where applicable
if(!showHidden) { children = children.Where(f => !Util.IsHidden(f)).ToArray(); }
// state vars
var buffer = "";
var longest = Path.GetFileName(children.OrderByDescending(s => s.Length).First()).Length;
var columns = Console.WindowWidth / (longest + 2);
var multiline = columns < children.Count();
var position = 0;
// print names if more than one target
if(args.Length > 1)
Console.WriteLine($"{arg}:");
// iterate over children; build buffer and output when full
foreach(var child in children.OrderBy(f => (int)(Path.GetFileName(f)[0]))) {
var name = Path.GetFileName(child);
// format hidden files
if(Util.IsHidden(child))
buffer += Format.Hidden;
// format directories
if(Directory.Exists(child))
buffer += Format.Directory;
// if we pass max width, write buffer and clear
if( (++position > columns) && multiline ) {
position = 1;
Console.WriteLine(buffer.TrimEnd());
buffer = "";
}
if(multiline)
buffer += $"{name}{Format.Reset}".PadRight(longest + 6); // magic number 6 is +2 ignoring ansi reset sequence
else
buffer += $"{name}{Format.Reset} ";
}
// print last line
Console.WriteLine(buffer);
}

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qdls/Util.cs Normal file
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namespace Qdls;
using System.IO;
public static class Util {
public static bool IsHidden(string path) {
var name = Path.GetFileName(path);
return
name.StartsWith('.') ||
( File.GetAttributes(path) & FileAttributes.Hidden ) == FileAttributes.Hidden;
}
public static bool CheckFlag(List<String> args, params string[] forms) {
var found = args.RemoveAll(forms.Contains);
return found > 0;
}
}
public static class Format {
public const string Reset = "\x1b[0m"; // reset
public const string Hidden = "\x1b[2;3m"; // faint + italic
public const string Executable = "\x1b[1;32m"; // bold + green
public const string Directory = "\x1b[1;34m"; // bold + blue
}

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qdls/qdls.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>