cargo-trend

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Cargo subcommand to generate trend graph of dependent crates

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# cargo-trend

[![Actions Status](https://github.com/dalance/cargo-trend/workflows/Regression/badge.svg)](https://github.com/dalance/cargo-trend/actions)
[![Crates.io](https://img.shields.io/crates/v/cargo-trend.svg)](https://crates.io/crates/cargo-trend)

cargo-trend is a cargo subcommand to generate trend graph of dependent crates.

## Installation

You can install by [cargo](https://crates.io/crates/cargo-trend).

```
cargo install cargo-trend
```

## Usage

Type `cargo trend` only. `trend.svg` show the trend graph of current project's dependencies.

```console
$ cargo trend
```

If crate names are given, `trend.svg` show the trend graph of the given crates.

```console
$ cargo trend failure error-chain quick-error snafu err-derive anyhow thiserror
```

`--output` option can specify the filename of the trend graph.
The extension can be `.svg`, `.png`, `.bmp`, `.jpeg` and `.jpg`.

```console
$ cargo trend --output trend.png
```

If `--relative` option is given, the y-axis of the output becomes fraction of crates.io.

If `--transitive` option is given, the way counting dependents changes from direct-dependencies to transitive-dependencies.

If `--top` option is given, the most trending crates are shown.

## Samples

### The most trending crates by 4 weeks

```console
$ cargo trend --top 5 --duration 4
```

![top5.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/top5.svg)

```console
$ cargo trend --relative --top 5 --duration 4
```

![top5_relative.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/top5_relative.svg)

### Error management library

```console
$ cargo trend failure error-chain quick-error snafu err-derive anyhow thiserror
```

![error.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/error.svg)

```console
$ cargo trend --relative failure error-chain quick-error snafu err-derive anyhow thiserror
```

![error_relative.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/error_relative.svg)

### Argument parser library

```console
$ cargo trend clap structopt docopt argparse getopts
```

![arg.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/arg.svg)

```console
$ cargo trend --relative clap structopt docopt argparse getopts
```

![arg_relative.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/arg_relative.svg)

### Terminal library

```console
$ cargo trend ansi_term termcolor term termion colored console
```

![term.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/term.svg)

```console
$ cargo trend --relative ansi_term termcolor term termion colored console
```

![term_relative.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/term_relative.svg)

### Async runtime library

```console
$ cargo trend tokio smol async-std
```

![async.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/async.svg)

```console
$ cargo trend --relative tokio smol async-std
```

![async_relative.svg](https://raw.githubusercontent.com/dalance/cargo-trend/master/samples/async_relative.svg)

## Database

The database of dependent crates is `./db/db.gz`.
cargo-trend fetch it from github.com and generate graph.
The database is constructed from [crates.io-index](https://github.com/rust-lang/crates.io-index) and updated daily.

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