pull-git-repo

Wrap a module implementing the abstract-pull-git-repo interface, adding utility methods

API

Below, source(obj) means returns a readable stream for objects of type obj

Repo(repo): repo

Mixin pull-git-repo methods into repo

Repo.parseCommitOrTag(object): source({name, value})

Read a git object and transform it into a stream of {name, value} properties, as in repo.readCommit or repo.readTag.

Repo.parseTree(object): source({id, mode, name})

Read a tree and transform it into a stream of {name, value} properties. name may be id for the tree object id, or entry for a file entry in the tree.

`repo.getRefNames([pretty, ]cb(err, refs))

Get a repo's refs as an object.

• pretty: format ref type/prefix nicely
• refs: refs object, in format {<type>: [name]}}, where type is e.g. "heads" (or "Branches" if option pretty is set)

repo.getSymRef(name[, short], cb(err, value))

Get a symref of a repo.

• name: the symref to resolve. e.g. "HEAD"

• short: whether to shorten the value, e.g. from "refs/heads/master" to "master".

• value: head pointed to by name. e.g. "refs/heads/master"

repo.readCommit(rev): source({name, value})

Read a commit. Returns a readable stream of objects for fields in the commit. The commit message is treated as a field of type "title" for the first line, and a field of type "body" for the rest.

• rev: SHA1 hash of the commit to read, or a ref pointing to it
• name: name of a field, one of ["tree", "parent", "author", "committer", "body"]
• value: string value of the field

repo.readTag(rev): source({name, value})

Read a tag. Returns a readable stream of objects for fields in the tag. The tag message is treated as a field of type "title" for the first line, and a field of type "body" for the rest.

• rev: SHA1 hash of the tag to read, or a ref pointing to it
• name: name of a field, one of ["object", "type", "tag", "tagger", "title", "body"]
• value: string value of the field

repo.readTree(rev): source({id, mode, name})

Get a tree and stream its entries

repo.readDir(rev, path): source({id, mode, name})

Stream entries from a tree down a given path

repo.readLog(head): source(hash)

Stream commit IDs of the repo, following the commit history backwards

• head: hash or rev of the commit from which to start reading history

repo.resolveRef(name, cb(err, hash))

Get the hash that a ref (or symref) points to. Errors if the ref is not found.

repo.getRef(name, cb(err, object, id))

Get a git object

• name: name of a branch, tag, or ref pointing to the object, or SHA1 of the object

repo.getCommit(rev, cb(err, object, id))

Get a commit object. If the object refered to by rev is a tag, get the commit that it points to.

repo.getTag(rev, cb(err, object))

Get a tag object.

repo.getTree(rev, cb(err, object))

Get a tree object. If rev refers to a commit or tag, get the tree that it points to.

Repo.getCommitParsed(object, cb(err, commit))

Read a commit object and parse it into a JSON object, as in repo.getCommitParsed.

repo.getCommitParsed(rev, cb(err, commit))

Get a commit buffered and parsed into a JSON object

• commit.id: ID of the commit
• commit.tree: ID of the tree of the commit
• commit.parents: IDs of parent commits. There will be more than one if it is a merge commit.
• commit.title: first line of the commit message
• commit.body: text from the commit message following the first line and an optional blank line
• commit.author: user object for info about the commit author
• commit.committer: user object for info about the committer
• commit.separateAuthor: convenience value indicating the user or email in commit.author and commit.committer are different
• commit.separateAuthorDate: convenience value indicating commit.author.date and commit.committer.date are different

Example:

{
  "parents": [
    "f7c37c43a136064e07328ee7501fad8ed7bcc4d6"
  ],
  "author": {
    "str": "root <root@localhost> 1455078653 -0500",
    "name": "root",
    "email": "root@localhost",
    "date": new Date(1455078653)
  },
  "committer": {
    "str": "root <root@localhost> 1455078653 -0500",
    "name": "root",
    "email": "root@localhost",
    "date": new Date(1455078653)
  },
  "body": "",
  "id": "9a385c1d6b48b7f472ac507a3ec08263358e9804",
  "tree": "68aba62e560c0ebc3396e8ae9335232cd93a3f60",
  "title": "Initial commit",
  "separateAuthor": false
}

Repo.getTagParsed(object, cb(err, tag))

Read a tag object and parse it into a JSON object

• tag.id: ID of the tag
• tag.object: ID of the tagged object
• tag.type: type of the tagged object
• tag.tagger: user object for info about the creator of the tag
• tag.title: first line of the tag message
• tag.body: text from the tag message following the first line and an optional blank line

repo.getTagParsed(rev, cb(err, tag))

Get a tag object and parse into a JSON object

Repo.getTreeParsed(object, cb(err, tree))

Read a tree object and parse it an object.

• tree.id: ID of the tree
• tree.entries: array of entries in the tree
  • entry.id: ID of the item object
  • entry.mode: permission mode of the file
  • entry.name: name of the file in the directory

repo.getFile(rev, path, cb(err, {length, mode, read)

Get a file from tree at the given path.

length: size of the file in bytes mode: mode of the file, e.g. "100644" read: readable stream of the file's contents

repo.isCommitHash(str): bool

repo.diffTrees(treeIds, recursive): source({key, values, diff})

Get a diff of changed files between two trees

Repo.diffTrees(repos, trees, recursive): source({key, values, diff})

Get a diff of changed files between trees of possibly different repos

Repo.getMergeBase(baseRepo, baseBranch, headRepo, headBranch, cb)

Find a common ancestor commit of two commits/branches

repo.getPack(heads, haves, [opts, ]cb(err, readPack))

Build a packfile that includes objects reachable from heads and not reachable from haves.

• heads: set of revs for head commits to include
• haves: set of revs of commits to not include
• opts.verbosity: git verbosity level. normal is 1, -v is 2, -q is 0
• cb: callback for a stream of packfile data

repo.getFirstAvailableRev(timeout, cb): sink(rev)

Pull revs into this sink, and it will try to retrieve them, and callback the first one that resolves within the given timeout.

• timeout: milliseconds to wait for a rev before giving up on it
• rev: hash of an object to try to retrieve

License

Copyright (c) 2016 Charles Lehner

Usage of the works is permitted provided that this instrument is retained with the works, so that any entity that uses the works is notified of this instrument.

DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.