# ehtterami/caesar architecture

> Architecture diagram of the GitHub repository ehtterami/caesar, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-29). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/ehtterami/caesar
- Repository: https://github.com/ehtterami/caesar

## Overview

Caesar is a small command-line utility intended to read text from a string or file, shift characters to encrypt or decrypt, and print or write the result. main.py dispatches to the transformation and file helpers and reads settings from configs/config.ini. The sampled code has data-shape mismatches between the entry point and helpers, so the documented workflow may not run successfully as written; the graph shows the calls present in source, not a guaranteed successful pipeline.

Main entry points: [`main.py`](https://github.com/ehtterami/caesar/blob/master/main.py) (CLI entry), [`modules/reader.py`](https://github.com/ehtterami/caesar/blob/master/modules/reader.py) (File reader/writer), [`modules/encrypt.py`](https://github.com/ehtterami/caesar/blob/master/modules/encrypt.py) (Encrypt shift), [`modules/decrypt.py`](https://github.com/ehtterami/caesar/blob/master/modules/decrypt.py) (Decrypt shift)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_entry["Command line"]
  node_main["CLI entry<br/>[main.py]"]
end

subgraph group_transform["Text transforms"]
  node_encrypt["Encrypt shift<br/>[encrypt.py]"]
  node_decrypt["Decrypt shift<br/>[decrypt.py]"]
end

subgraph group_files["Files and settings"]
  node_reader["File reader/writer<br/>[reader.py]"]
  node_config["Settings<br/>[config.ini]"]
end

node_user(("User"))
node_filesystem[("Local filesystem")]
node_terminal(("Terminal"))

node_user -->|"provides options"| node_main
node_main -->|"reads settings"| node_config
node_main -->|"requests file read"| node_reader
node_reader -->|"reads input"| node_filesystem
node_main -->|"dispatches encryption"| node_encrypt
node_main -->|"dispatches decryption"| node_decrypt
node_main -->|"requests file write"| node_reader
node_reader -->|"writes output"| node_filesystem
node_main -->|"prints result"| node_terminal

click node_main "https://github.com/ehtterami/caesar/blob/master/main.py"
click node_encrypt "https://github.com/ehtterami/caesar/blob/master/modules/encrypt.py"
click node_decrypt "https://github.com/ehtterami/caesar/blob/master/modules/decrypt.py"
click node_reader "https://github.com/ehtterami/caesar/blob/master/modules/reader.py"
click node_config "https://github.com/ehtterami/caesar/blob/master/configs/config.ini"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_main,node_user toneBlue
class node_encrypt,node_decrypt,node_filesystem toneAmber
class node_reader,node_config toneMint
class node_terminal toneIndigo
```

## Components

### Command line

- [CLI entry](https://github.com/ehtterami/caesar/blob/master/main.py): `main.py`

### Text transforms

- [Encrypt shift](https://github.com/ehtterami/caesar/blob/master/modules/encrypt.py): `modules/encrypt.py`
- [Decrypt shift](https://github.com/ehtterami/caesar/blob/master/modules/decrypt.py): `modules/decrypt.py`

### Files and settings

- [File reader/writer](https://github.com/ehtterami/caesar/blob/master/modules/reader.py): `modules/reader.py`
- [Settings](https://github.com/ehtterami/caesar/blob/master/configs/config.ini): `configs/config.ini`

### Other components

- **User**
- **Local filesystem**
- **Terminal**

## Connections

- User → CLI entry: provides options
- CLI entry → Settings: reads settings
- CLI entry → File reader/writer: requests file read
- File reader/writer → Local filesystem: reads input
- CLI entry → Encrypt shift: dispatches encryption
- CLI entry → Decrypt shift: dispatches decryption
- CLI entry → File reader/writer: requests file write
- File reader/writer → Local filesystem: writes output
- CLI entry → Terminal: prints result