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| ''Author: Paul Crowley''[[BR]] ''Author: Ian Clatworthy'' (parser code borrowed from Bazaar)[[BR]] ''Author: Greg Ward'' (current maintainer)[[BR]] |
''Author: Paul Crowley''<<BR>> ''Author: Ian Clatworthy'' (parser code borrowed from Bazaar)<<BR>> ''Author: Greg Ward'' (current maintainer)<<BR>> |
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| * the definitive documentation for the format is [http://www.kernel.org/pub/software/scm/git/docs/git-fast-import.html the git-fast-import] man page * Bazaar also has [http://bazaar-vcs.org/BzrFastImport a similar plugin]; in fact, much of the code in `hg-fastimport` originated with Bazaar (credit to Ian Clatworthy) |
* the definitive documentation for the format is [[http://www.kernel.org/pub/software/scm/git/docs/git-fast-import.html|the git-fast-import]] man page * Bazaar also has [[http://bazaar-vcs.org/BzrFastImport|a similar plugin]]; in fact, much of the code in `hg-fastimport` originated with Bazaar (credit to Ian Clatworthy) |
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| 1. Clone one of the maintainer's repositories: | This assumes you're running on a Unix-like OS. Windows users are on their own for now. 1. Get the `pyfastimport` library that `hg-fastimport` depends on: {{{ bzr branch lp:~gward/bzr-fastimport/reusable pyfastimport }}} (No, I'm afraid I don't know how to get the code without using Bazaar.) 1. (Optional) Run `pyfastimport`'s test suite: {{{ (cd pyfastimport && ./runtests.py) }}} 1. Get `hg-fastimport` |
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| 1. Symlink in the required `fastimport` package: {{{ ln -s ../pyfastimport/fastimport . }}} |
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| fastimport = /path/to/hg-fastimport/fastimport | fastimport = /path/to/hg-fastimport/hgfastimport |
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| hg fastimport SOURCE | hg fastimport FILE ... |
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| reads a fast-import stream from `SOURCE` and adds changesets to the current repository. For example, to create a brand-new repository from `foo.git-dump`: | reads a fast-import stream from each `FILE` and adds changesets to the current repository. For example, to create a brand-new repository from `foo.git-dump`: |
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| Support for "blobs" (a way of specifying file contents independently of commits) is, as of 31 March 2009, brand-new and only lightly tested. | Support for "blobs" (a way of specifying file contents independently of commits) is, as of 31 March 2009, brand-new and only lightly tested. ---- CategoryExtensionsByOthers |
fastimport Extension
This extension is not distributed with Mercurial.
Author: Paul Crowley
Author: Ian Clatworthy (parser code borrowed from Bazaar)
Author: Greg Ward (current maintainer)
Clone URLs:
Overview
The "fast import" format originates with Git, where it is used as the generic backend for converting other SCM repositories to git. It's generic enough that it can be used to feed a Mercurial repository as well, and that's what this extension does: read a "fast import" stream and turn it into changesets in a Mercurial repository. The potential of this extension is that any foreign SCM that can be converted to Git can also be converted to Mercurial, regardless of the capabilities of Mercurial's own ConvertExtension. The catch is that the conversion is a little cumbersome: first convert to a fast-import dump, then feed that dump to Mercurial.
Links:
the definitive documentation for the format is the git-fast-import man page
Bazaar also has a similar plugin; in fact, much of the code in hg-fastimport originated with Bazaar (credit to Ian Clatworthy)
Setup
This assumes you're running on a Unix-like OS. Windows users are on their own for now.
Get the pyfastimport library that hg-fastimport depends on:
bzr branch lp:~gward/bzr-fastimport/reusable pyfastimport
(No, I'm afraid I don't know how to get the code without using Bazaar.)(Optional) Run pyfastimport's test suite:
(cd pyfastimport && ./runtests.py)
Get hg-fastimport
hg clone http://vc.gerg.ca/hg/hg-fastimport/
Symlink in the required fastimport package:
ln -s ../pyfastimport/fastimport .
Enable the extension by adding this line to [extensions] in ~/.hgrc:
fastimport = /path/to/hg-fastimport/hgfastimport
(where /path/to/hg-fastimport is the directory created by the clone operation).
Usage
Usage is simple:
hg fastimport FILE ...
reads a fast-import stream from each FILE and adds changesets to the current repository. For example, to create a brand-new repository from foo.git-dump:
hg init foo.hg hg -R foo.hg fastimport foo.git-dump
Limitations and caveats
There are some commands in the fast-import language that are not supported by hg-fastimport. You'll know them when you see them; Mercurial will crash with an exception.
Support for "blobs" (a way of specifying file contents independently of commits) is, as of 31 March 2009, brand-new and only lightly tested.