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feat: Add file editing tools with anchor validation and improve context compaction by redacting stale ReadFile results based on deduplication and time-to-live.

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Tomi Eckert
2026-03-04 16:22:57 +01:00
parent 31cf7cb4c1
commit d7a94436d1
4 changed files with 101 additions and 46 deletions
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43
Tools/FileTools.cs
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@@ -14,14 +14,14 @@ internal static class FileTools
{
public static Action<string> Log { get; set; } = Console.WriteLine;
[Description("Read a file and return its lines tagged with Hashline anchors in the format lineNumber:hash|content. Optionally restrict to a line window.")]
[Description("Read a file. Max 200 lines per call. Returns lines with line:hash| anchors.")]
public static string ReadFile(
[Description("Path to the file to read. Can be relative to the working directory or absolute.")] string path,
[Description("First line to return, 1-indexed inclusive. Defaults to 1.")] int startLine = 1,
[Description("Last line to return, 1-indexed inclusive. Use 0 for end of file. Defaults to 0.")] int endLine = 0)
[Description("Path to the file.")] string path,
[Description("First line to return (inclusive). Defaults to 1.")] int startLine = 1,
[Description("Last line to return (inclusive). Use 0 for EOF. Defaults to 0.")] int endLine = 0)
{
path = ResolvePath(path);
Log($"Reading file: {path}");
Log($"Reading file: {path} {startLine}:{endLine}L");
if (!File.Exists(path))
return $"ERROR: File not found: {path}";
@@ -33,6 +33,13 @@ internal static class FileTools
if (lines.Length == 0)
return $"(empty file: {path})";
int actualEnd = endLine <= 0 ? lines.Length : Math.Min(endLine, lines.Length);
int start = Math.Max(1, startLine);
if (actualEnd - start + 1 > 200)
{
return $"ERROR: File too large to read at once ({lines.Length} lines). Provide startLine and endLine to read a chunk of max 200 lines. Use GrepFile to get an outline (grep 'public') and find the line numbers.";
}
return HashlineEncoder.Encode(lines, startLine, endLine);
}
catch (Exception ex)
@@ -41,10 +48,10 @@ internal static class FileTools
}
}
[Description("Search a file for lines matching a regex pattern. Returns only matching lines, already tagged with Hashline anchors so you can reference them in edit operations immediately.")]
[Description("Search a file for a regex pattern. Returns matches with line:hash| anchors.")]
public static string GrepFile(
[Description("Path to the file to search.")] string path,
[Description("Regular expression pattern to search for.")] string pattern)
[Description("Regex pattern.")] string pattern)
{
path = ResolvePath(path);
Log($"Searching file: {path}");
@@ -90,9 +97,9 @@ internal static class FileTools
}
}
[Description("List the files and subdirectories in a directory.")]
[Description("List files and subdirectories.")]
public static string ListDir(
[Description("Path to the directory to list. Defaults to the current working directory.")] string path = ".")
[Description("Path to the directory.")] string path = ".")
{
path = ResolvePath(path);
Log($"Listing directory: {path}");
@@ -122,10 +129,10 @@ internal static class FileTools
}
}
[Description("Search for files matching a glob/wildcard pattern (e.g., '*.cs', 'src/**/*.js'). Returns full paths of matching files.")]
[Description("Find files matching a glob pattern (e.g. '*.cs', '**/*.json').")]
public static string FindFiles(
[Description("Path to start the search (directory).")] string path,
[Description("Glob pattern to match files (e.g., '*.cs', '**/*.json'). Supports * and ** wildcards.")] string pattern)
[Description("Directory to start search.")] string path,
[Description("Glob pattern (supports * and **).")] string pattern)
{
path = ResolvePath(path);
Log($"Finding files: {pattern} in {path}");
@@ -159,11 +166,11 @@ internal static class FileTools
}
}
[Description("Search for a regex pattern across all files in a directory tree. Returns matches with file:line:hash|content format.")]
[Description("Recursive regex search across all files. Returns matches with file:line:hash| format.")]
public static string GrepRecursive(
[Description("Path to the directory to search recursively.")] string path,
[Description("Regular expression pattern to search for.")] string pattern,
[Description("Optional glob pattern to filter which files to search (e.g., '*.cs'). Defaults to all files.")] string? filePattern = null)
[Description("Directory to search.")] string path,
[Description("Regex pattern.")] string pattern,
[Description("Optional glob to filter files (e.g. '*.cs').")] string? filePattern = null)
{
path = ResolvePath(path);
Log($"Recursive grep: {pattern} in {path}" + (filePattern != null ? $" (files: {filePattern})" : ""));
@@ -264,9 +271,9 @@ internal static class FileTools
}
}
[Description("Get detailed information about a file (size, permissions, last modified, type, etc.).")]
[Description("Get detailed file info (size, last modified, etc).")]
public static string GetFileInfo(
[Description("Path to the file to get information about.")] string path)
[Description("Path to the file.")] string path)
{
path = ResolvePath(path);
Log($"Getting file info: {path}");