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README.md

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-# kindle2latex
+# Kindle Clippings → LaTeX Converter
 
-Convert amazon kindle clippings to latex
+A small console utility that converts Amazon Kindle *My Clippings* text exports into structured LaTeX.
+
+The tool parses Kindle highlights and groups them by book title, producing a LaTeX structure with:
+
+* `\section{}` — per book
+* `\subsection{}` — per highlight (metadata line)
+* Highlight text — inserted as plain LaTeX content
+* `\subsubsection{notes};` — placeholder for future comments
+
+---
+
+## Architecture
+
+This project demonstrates **two different parsing approaches** solving the same problem:
+
+### 1️⃣ FSM-based parser
+
+Implemented using a template-based finite state machine (`fsm.h`).
+
+Characteristics:
+
+* Compile-time validated transitions
+* Strong type safety
+* Explicit state/event model
+* Strict contract enforcement
+
+This version is useful when:
+
+* The input format is more complex
+* You want compile-time guarantees for state transitions
+* The parsing logic may grow over time
+
+---
+
+### 2️⃣ TypeFactory-based parser
+
+Implemented using a registration-based factory (`typefactory.h`).
+
+Characteristics:
+
+* Stage-driven pipeline
+* One handler per parsing stage
+* Runtime validation of handler registration
+* No per-line allocations (handlers cached once)
+
+This version is:
+
+* Simpler
+* More readable
+* Easier to debug
+* Well suited for linear, protocol-like formats
+
+Both implementations produce identical LaTeX output.
+
+---
+
+## Input Format
+
+Expected input is a standard Kindle `My Clippings.txt` export.
+
+Each clipping block follows this structure:
+
+```
+Book Title
+- Your Highlight on Location 123-125 | Added on ...
+
+Highlighted text line 1
+Highlighted text line 2
+==========
+```
+
+---
+
+## Output Format
+
+Generated LaTeX structure:
+
+```latex
+\section{Book Title}
+
+  \subsection{- Your Highlight on Location 123-125 | Added on ...}
+    Highlighted text line 1
+    Highlighted text line 2
+    \subsubsection{notes};
+```
+
+Highlights are grouped by book title.
+
+---
+
+## Build
+
+Requires a C++17-compatible compiler.
+
+```bash
+g++ -std=gnu++17 -Wall -Wextra -O2 -o kindle2latex main.cpp
+```
+
+---
+
+## Usage
+
+```bash
+./kindle2latex --input input.txt --output output.tex
+```
+
+Arguments:
+
+| Argument   | Description                   |
+| ---------- | ----------------------------- |
+| `--input`  | Path to Kindle clippings file |
+| `--output` | Path to generated LaTeX file  |
+
+---
+
+## Design Notes
+
+* No dynamic allocations per input line (handlers are cached).
+* Order of books is preserved as in the original file.
+* LaTeX special characters are escaped automatically.
+* Incomplete clipping blocks are safely ignored.
+* The final block is flushed even if the file does not end with `==========`.
+
+---
+
+## Why Two Implementations?
+
+This repository intentionally keeps two different parsing styles:
+
+* The FSM version demonstrates strict compile-time state control.
+* The TypeFactory version demonstrates a clean, extensible runtime pipeline.
+
+The goal is architectural exploration and comparison, not just solving the parsing task.
+
+---
+
+If you want, I can also add:
+
+* A small diagram of the parsing stages
+* A section comparing performance characteristics
+* Or a short "When to choose FSM vs Factory" guideline for future reuse in your blueprints repository