CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

DrillTools (钻带处理工具) is a Windows desktop application for processing PCB drill tape files. It parses drill tape data, displays tool information (tool number, diameter, hole count, parameters), and supports reordering tools with various sorting methods.

Build & Run

dotnet build                    # Build the project
dotnet build -c Release         # Build in Release mode
dotnet publish                  # Publish as single-file exe (win-x86)

Target: .NET 6.0, WPF, x86 only. No external NuGet dependencies.

No test framework is configured. Do not write unit tests for this project.

Architecture

MVVM pattern with three windows:

MainWindow — primary UI for loading, viewing, and reordering drill tape tools
ToolDetailWindow — displays detailed tool parameters
ToolReorderConfirmationWindow — confirmation dialog for reorder operations

Key files:

File	Role
`MainWindowViewModel.cs` (~2400 lines)	Central business logic: tool management, drill tape parsing/generation, sort seed management, reference tape comparison
`DrillTapeProcessor.cs`	Core drill tape parsing engine (`DrillTools.Integration` namespace)
`ToolItem.cs`	Data model for drill tools (implements `INotifyPropertyChanged`)
`SlotHoleCalculator.cs`	Geometry calculations for slot hole counts and positions
`DragDropHelper.cs`	WPF ListView drag-drop with visual insertion indicator

Namespaces: DrillTools (UI/models), DrillTools.Integration (parsing logic).

Drill Tape Format

The app parses a specific PCB drill tape format:

M48                              ← Header start
T01C0.799H05000Z+0.000S060.00    ← Tool definitions (Txx=tool#, C=diameter, rest=machine params)
T02C0.656H01500Z+0.150S070.00
%                                ← Header end / data start
T01                              ← Active tool
X-167525Y013500                  ← Hole coordinates
X-069659Y016450G85X-094159Y016450 ← Slot hole (start G85 end)
M30                              ← End of file

Supported file extensions: .txt, .drl, .dr2, .dpin

Tool types by diameter suffix digit: 0/8/9=Drill, 1=Slot, 2/6=EA Slot, 3=Dust Slot, 4=Deburr, 5=NonStandard, 7=Special.

Important Technical Details

File encoding: ANSI/GB2312 (code page 936) — drill tape files use this encoding, not UTF-8
Encrypted file reading: Uses cmd.exe /c type to read drill tape files (some files are "encrypted" and cannot be read directly via standard file I/O)
Slot hole calculation: Uses CAM350 standard tolerance (0.0127mm) for computing hole counts along slot paths
Backup strategy: Creates .bak files when saving modified drill tape data
Command-line support: App accepts a file path argument to auto-load a drill tape file on startup
Documentation: All docs under Docs/ are in Chinese (Simplified). The UI is also in Chinese.

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