getver-format

A wrapper around getver, an excellent tool for Rust, to format its output for use in a Cargo manifest. Written in Python.

getver will always pull the latest version number of a crate from crates.io, so this is most useful when adding a new dependency to a project or upgrading a prior dependency.

Requirements

• Python 3.5+
• getver must be installed. See the README for instructions

Usage

Basic usage

Give a list of crate names on the command line, just like getver:

$ python getver-format.py toml fomat_macros chrono cached rayon error-chain

A name can be listed with either an underscore or a hyphen. The output will use the canonical name on crates.io. The order of the output will match the list given unless you specify a sorting option.

The output is ready to copy and paste into your Cargo.toml:

toml = "0.4"
fomat-macros = "0.2"
chrono = "0.4"
cached = "0.8"
rayon = "1.0"
error-chain = "0.12"

Sort alphabetically

The output can be sorted alphabetically by adding -a or --sort-alphabet:

$ python getver-format.py -a toml fomat_macros chrono cached rayon error-chain
cached = "0.8"
chrono = "0.4"
error-chain = "0.12"
fomat-macros = "0.2"
rayon = "1.0"
toml = "0.4"

Showing patch version

If you want the SemVer patch version (as in MAJOR.MINOR.PATCH) in the output, add -p or --show-patch:

$ python getver-format.py -p toml fomat_macros chrono cached rayon error-chain
toml = "0.4.10"
fomat-macros = "0.2.1"
chrono = "0.4.6"
cached = "0.8.0"
rayon = "1.0.3"
error-chain = "0.12.0"

Missing crates

Names that cannot be found on crates.io are printed to standard error in alphabetical order:

$ python getver-format.py bob num alice
num = "0.2"

The following crates were not found:
alice
bob

Hide missing crates

Missing crates can be hidden by adding -n or --no-missing-crates:

$ python getver-format.py -n bob num alice
num = "0.2"

Help

Print help on the console

Add -h or --help:

$ python getver-format.py -h
usage: getver-format [-h] [-V] [-g PATH] [-p] [-n] [-a] CRATE [CRATE ...]

getver-format 0.5.0
Print a list of the latest Rust crate versions from crates.io

positional arguments:
  CRATE                 a list of Cargo crates

optional arguments:
  -h, --help            show this help message and exit
  -V, --version         print the program version
  -g PATH, --getver-path PATH
                        path to getver
  -p, --show-patch      show semver patch versions
  -n, --no-missing-crates
                        do not show missing crates in the output
  -a, --sort-alphabet   sort the list of crates alphabetically

getver is not in the PATH environment variable

These must include the full path to getver, including the executable name.

Set the GETVER_PATH environment variable

$ GETVER_PATH="/path/to/getver" python getver-format.py

or

$ export GETVER_PATH="/path/to/getver"
$ python getver-format.py

Specify on the command line

Add -g or --getver-path. If there are any spaces in the path, they must be escaped with \, or the full path must be "quoted".

This will override the GETVER_PATH variable.

At least one crate name must be given

$ python getver-format.py
usage: getver-format [-h] [-V] [-g PATH] [-p] [-n] [-a] CRATE [CRATE ...]
getver-format: error: the following arguments are required: CRATE

Future

Planned additions:

• Optional sorting by version number
• Add a --show-debug-output switch for printing debugging information
• Proper changelog as a Markdown file linked from this README
• Testing on Windows: This program is currently not being tested on Windows, though it should run as long as you've built and installed getver and it can be found in your Path. Specifying the path with -g may fail because of OS differences.

Known bugs:

• If a crate name is given with an underscore and the canonical name on crates.io uses a hyphen, a KeyError exception will occur. Likewise, if a crate name is given with a hyphen and the canonical name uses an underscore, the final order may not match the input order.

License

Released under the MIT license.