dart-pub-packages-dependency-finder: A Dart repository from nicolasgarnier

#Dart Pub packages dependency finder

This is a command line tool that will help you find all packages in Pub that have a given dependency.

##Usage

This script is written in Dart so you'll need Dart installed. You run it using the following command:

dart dependency_finder.dart <package_name> [--skip-downloads]

Where:

<package_name> Is the name if the dependency package you are looking for dependents of.
--skip-downloads This will skip downloading the latest version of all packages. You can use that on subsequent searches to avoid re-downloading everything (which is the slow part).

##Example usage

This is an example we'll explain later:

dart dependency_finder.dart js

This will list all packages in Dart Pub that have a dependency on the package:js library in Pub. We do that by:

Fetching the list of all existing packages
Looking for what is their latest version
Downloading the latest version of each Pub packages archive
Extracting the pubspec.yaml file out of all package archives
Looking for the js dependency in the pubspec.yaml

In this particular example the output would be:

computername:bin username$ dart dependency_finder.dart js
Listing all packages... 1181 - Done.
Finding last versions of each packages... 1181/1181 - Done.
Downloading packages... 1181/1181 - Done.
Analyzing packages... 1181/1181
All Done! Found 26 packages with packages:js dependency:
 - add_v1_api-0.1.0
 - aloha-2.0.0
 - dancer-0.4.0+4
 - dartwork-0.1.0
 - diffbot-0.1.1
 - form_elements-1.1.0
 - google_adsense_v1_1_api-0.3.8
 - google_adsense_v1_api-0.3.8
 - google_compute_v1beta12_api-0.1.0
 - google_compute_v1beta13_api-0.1.6
 - google_compute_v1beta14_api-0.3.8
 - google_dynamiccreatives_v1_api-0.1.1
 - google_latitude_v1_api-0.3.8
 - google_plus_v1moments_api-0.1.0
 - google_plus_widget-0.0.1
 - haml-0.0.1
 ...

Now lets say you also want to know which packages have a dependency on the yaml package you can run the following command:

dart dependency_finder.dart yaml --skip-downloads

This will be a lot faster than the first run because the script won't download all repos and just start looking into the pubspec.yaml files. Here is what the output would look like:

computername:bin username$ dart dependency_finder.dart yaml --skip-downloads
Analyzing packages... 1181/1181
All Done! Found 25 packages with packages:yaml dependency:
 - activemigration-0.2.2
 - ccompile-0.2.2
 - compiler-0.3.0
 - dart_config-0.5.0
 - docgen-0.9.0
 - FileTeCouch-0.1.0
 - flare-0.3.0
 - force_it-0.3.0
 - package_installer-0.0.2
 - ped-0.0.4
 - peg-0.0.9
 - plugins-1.0.1
 - polymer-0.9.5+2
 - polymer_one_script-0.0.1
 ...

##Disclaimer

Even though contributors for this project are working for Google this is not an official Google Product. This is an open-source sample script written in Dart.

##License

nicolasgarnier/dart-pub-packages-dependency-finder