Add comprehensive tilde path expansion support to FileHelpers and function calling tools

src/common/Helpers/FileHelpers.cs

@@ -18,6 +18,7 @@ public static IEnumerable<string> FindFiles(string path, string pattern)
 
     public static IEnumerable<string> FindFiles(string fileNames)
     {
+        fileNames = PathHelpers.ExpandPath(fileNames);
         var currentDir = Directory.GetCurrentDirectory();
         foreach (var item in fileNames.Split(new char[] { ';', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries))
         {
@@ -103,11 +104,14 @@ public static IEnumerable<string> FindFilesInOsPath(string fileName)
 
     public static bool FileExists(string? fileName)
     {
-        return !string.IsNullOrEmpty(fileName) && (File.Exists(fileName) || fileName == "-");
+        if (string.IsNullOrEmpty(fileName)) return false;
+        fileName = PathHelpers.ExpandPath(fileName);
+        return File.Exists(fileName) || fileName == "-";
     }
 
     public static bool IsFileMatch(string fileName, List<Regex> includeFileContainsPatternList, List<Regex> excludeFileContainsPatternList)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         var checkContent = includeFileContainsPatternList.Any() || excludeFileContainsPatternList.Any();
         if (!checkContent) return true;
 
@@ -185,6 +189,7 @@ public static bool IsFileMatch(string fileName, List<Regex> includeFileContainsP
 
     public static void ReadIgnoreFile(string ignoreFile, out List<string> excludeGlobs, out List<Regex> excludeFileNamePatternList)
     {
+        ignoreFile = PathHelpers.ExpandPath(ignoreFile);
         ConsoleHelpers.WriteDebugLine($"ReadIgnoreFile: ignoreFile: {ignoreFile}");
 
         excludeGlobs = new List<string>();
@@ -355,6 +360,7 @@ public static bool IsFileTimeMatch(string fileName,
         DateTime? accessedAfter, DateTime? accessedBefore,
         DateTime? anyTimeAfter, DateTime? anyTimeBefore)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         try
         {
             var fileInfo = new FileInfo(fileName);
@@ -436,6 +442,7 @@ public static string MakeRelativePath(string fullPath)
 
     public static string ReadAllText(string fileName)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         var content = ConsoleHelpers.IsStandardInputReference(fileName)
             ? string.Join("\n", ConsoleHelpers.GetAllLinesFromStdin())
             : File.ReadAllText(fileName, Encoding.UTF8);
@@ -445,6 +452,7 @@ public static string ReadAllText(string fileName)
 
     public static string[] ReadAllLines(string fileName)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         var lines = ConsoleHelpers.IsStandardInputReference(fileName)
             ? ConsoleHelpers.GetAllLinesFromStdin().ToArray()
             : File.ReadAllLines(fileName, Encoding.UTF8);
@@ -454,6 +462,7 @@ public static string[] ReadAllLines(string fileName)
 
     public static string WriteAllText(string fileName, string content, string? saveToFolderOnAccessDenied = null)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         try
         {
             DirectoryHelpers.EnsureDirectoryForFileExists(fileName);
@@ -478,6 +487,7 @@ public static string WriteAllText(string fileName, string content, string? saveT
 
     public static void AppendAllText(string fileName, string trajectoryContent)
     {
+        fileName = PathHelpers.ExpandPath(fileName);
         DirectoryHelpers.EnsureDirectoryForFileExists(fileName);
         File.AppendAllText(fileName, trajectoryContent, Encoding.UTF8);
     }
@@ -638,6 +648,9 @@ private static char[] GetInvalidFileNameCharsForWeb()
     {
         if (fileNames == null || fileNames.Length == 0)
             return null;
+
+        // Expand tilde paths for all filenames
+        fileNames = fileNames.Select(PathHelpers.ExpandPath).ToArray();
 
         var currentPath = Directory.GetCurrentDirectory();
 

src/common/Helpers/PathHelpers.cs

@@ -1,3 +1,7 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+
 public class PathHelpers
 {
     public static string? Combine(string path1, string path2)
@@ -47,4 +51,32 @@ public static string NormalizePath(string outputDirectory)
             ? normalized.Substring(cwd.Length + 1)
             : normalized;
     }
+
+    /// <summary>
+    /// Expands tilde (~) paths to full paths using the user's home directory.
+    /// Handles both "~" (home directory) and "~/path" (home directory + path).
+    /// </summary>
+    /// <param name="path">The path that may contain a tilde</param>
+    /// <returns>The expanded path with tilde replaced by the home directory</returns>
+    public static string ExpandPath(string path)
+    {
+        if (string.IsNullOrEmpty(path))
+            return path;
+
+        // Handle exact "~" case
+        if (path == "~")
+        {
+            return Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+        }
+
+        // Handle "~/..." case
+        if (path.StartsWith("~/"))
+        {
+            var homeDir = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+            return Path.Combine(homeDir, path.Substring(2));
+        }
+
+        // Return unchanged if no tilde expansion needed
+        return path;
+    }
 }

src/cycod/FunctionCallingTools/StrReplaceEditorHelperFunctions.cs

@@ -12,6 +12,8 @@ public class StrReplaceEditorHelperFunctions
     [Description("Returns a list of non-hidden files and directories up to 2 levels deep.")]
     public string ListFiles([Description("Absolute or relative path to directory.")] string path)
     {
+        path = PathHelpers.ExpandPath(path);
+
         if (Directory.Exists(path))
         {
             path = Path.GetFullPath(path);
@@ -54,6 +56,8 @@ public string ViewFile(
         [Description("Maximum number of characters to display per line.")] int maxCharsPerLine = 500,
         [Description("Maximum total number of characters to display.")] int maxTotalChars = 100000)
     {
+        path = PathHelpers.ExpandPath(path);
+
         // Basic file validation
         var noFile = Directory.Exists(path) || !File.Exists(path);
         if (noFile) return $"Path {path} does not exist or is not a file.";
@@ -296,6 +300,7 @@ public string CreateFile(
         [Description("Absolute or relative path to file.")] string path,
         [Description("Content to be written to the file.")] string fileText)
     {
+
         if (File.Exists(path))
         {
             return $"Path {path} already exists; cannot create file. Use ViewFile and then ReplaceOneInFile to edit the file.";
@@ -312,6 +317,7 @@ public string ReplaceFileContent(
         [Description("New content to replace the entire file.")] string newContent,
         [Description("Current line count of the file (for verification).")] int oldContentLineCount)
     {
+
         if (!File.Exists(path))
         {
             return $"File {path} does not exist. Use CreateFile to create a new file.";
@@ -392,6 +398,7 @@ public string ReplaceOneInFile(
         [Description("Existing text in the file that should be replaced. Must match exactly one occurrence.")] string oldStr,
         [Description("New string content that will replace the old string.")] string newStr)
     {
+
         if (!File.Exists(path))
         {
             return $"File {path} does not exist.";
@@ -422,6 +429,7 @@ public string ReplaceMultipleInFile(
         [Description("Array of old strings to be replaced. Each must match exactly one occurrence.")] string[] oldStrings,
         [Description("Array of new strings to replace with. Must be same length as oldStrings.")] string[] newStrings)
     {
+
         if (!File.Exists(path))
         {
             return $"File {path} does not exist.";
@@ -491,6 +499,7 @@ public string Insert(
         [Description("Line number (1-indexed) after which to insert the new string.")] int insertLine,
         [Description("The string to insert into the file.")] string newStr)
     {
+
         if (!File.Exists(path))
         {
             return $"File {path} does not exist.";
@@ -518,6 +527,7 @@ public string Insert(
     public string UndoEdit(
         [Description("Absolute or relative path to file.")] string path)
     {
+
         if (!EditHistory.ContainsKey(path))
         {
             return $"No previous edit found for {path}.";