da4e2ebeba
## Problem
Credentials were stored as plaintext JSON in
`stdpath('data')/cp-nvim.json`, with no integration with system
credential managers.
## Solution
Replace file-based credential storage with `git credential
fill/approve/reject`, delegating to whatever credential helper the user
has configured (`cache`, `store`, `libsecret`, macOS Keychain, etc.).
- New `lua/cp/git_credential.lua` module wrapping the git credential
protocol
- All credential consumers (`credentials.lua`, `submit.lua`,
`scraper.lua`) use `git_credential` directly — `cache.lua` no longer
handles credentials
- CSES API token packed into the password field (`password<TAB>token`)
so it works with helpers that ignore the `path` field
- `has_helper()` guard on `:CP login`, `:CP logout`, and `:CP submit`
with an error message if no helper is configured
- Healthcheck split into `[required]`/`[optional]` sections; git version
and credential helper status shown
- `git` checked at startup in `check_required_runtime()`
- Cache version system (`CACHE_VERSION`, v1→v2 migration) removed — the
cache file is now a plain JSON blob
- `:CP` command gets `bar = true`
112 lines
2.5 KiB
Markdown
112 lines
2.5 KiB
Markdown
# cp.nvim
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**The definitive competitive programming environment for Neovim**
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Scrape problems, run tests, and debug solutions across multiple platforms with
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zero configuration.
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https://github.com/user-attachments/assets/e81d8dfb-578f-4a79-9989-210164fc0148
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## Features
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- **Multi-platform support**: AtCoder, CodeChef, Codeforces, USACO, CSES, Kattis
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- **Online Judge Integration**: Submit problems and view contest standings
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- **Live Contest Support**: Participate in real-time contests
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- **Automatic setup**: Scrape test cases and metadata in seconds
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- **Streamlined Editing**: Configure coding view, edit test cases,
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stress-test solutions, run interactive problems, and more
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- **Rich output**: 256 color ANSI support for compiler errors and program
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output
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- **Language agnosticism**: Configure with any language
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- **Security**: Passwords go untampered
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## Installation
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Install using your package manager of choice or via
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[luarocks](https://luarocks.org/modules/barrettruth/cp.nvim):
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```
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luarocks install cp.nvim
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```
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## Dependencies
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- GNU [time](https://www.gnu.org/software/time/) and
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[timeout](https://www.gnu.org/software/coreutils/manual/html_node/timeout-invocation.html)
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- [uv](https://docs.astral.sh/uv/) or [nix](https://nixos.org/) for problem
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scraping
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## Quick Start
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1. Find a contest:
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```
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:CP pick
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```
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2. View the problem:
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```
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:CP open
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```
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3. Code and test
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```
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:CP run
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```
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4. Navigate between problems
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```
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:CP next
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:CP prev
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:CP e1
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```
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5. Debug and edit test cases
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```
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:CP edit
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:CP panel --debug
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```
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6. Submit:
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```
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:CP submit
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```
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7. View contest standings:
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```
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:CP open standings
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```
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## Documentation
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```vim
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:help cp.nvim
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```
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See
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[my config](https://github.com/barrettruth/nix/blob/5d0ede3668eb7f5ad2b4475267fc0458f9fa4527/config/nvim/lua/plugins/dev.lua#L165)
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for the setup in the video shown above.
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## Motivation
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I could not find a neovim-centric, efficient, dependency-free, flexible, and
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easily customizable competitive programming workflow that "just works"--so I
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made it myself. I conferenced with top competitive programmers at Carnegie
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Mellon Univerity and the University of Virginia and covered their (and my) pain
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points:
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- Scraping: contests are automatically loaded asynchronously
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- Test Case Management: test case editor (`:CP edit`)
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- UI: both `run` and `panel` layouts cover common formats
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- Extensibility: snippet plugins, compilation, etc. are left to the programmer
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## Similar Projects
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- [competitest.nvim](https://github.com/xeluxee/competitest.nvim)
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- [assistant.nvim](https://github.com/A7Lavinraj/assistant.nvim)
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