Constants (JGit - Parent 4.1.1.201511131810-r API)

java.lang.Object
- org.eclipse.jgit.lib.Constants

public final class Constants
extends Object

Misc. constants used throughout JGit.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`CHARACTER_ENCODING` Native character encoding for commit messages, file names...
`static Charset`	`CHARSET` Native character encoding for commit messages, file names...
`static String`	`CHERRY_PICK_HEAD` name of the file containing the ID of a cherry pick commit in case of conflicts
`static String`	`COMMIT_EDITMSG` Name of the file in which git commands and hooks store and read the message prepared for the upcoming commit.
`static String`	`CONFIG` Default name for the Git repository configuration
`static String`	`DEFAULT_REMOTE_NAME` Default remote name used by clone, push and fetch operations
`static String`	`DOT_GIT` Default name for the Git repository directory
`static String`	`DOT_GIT_ATTRIBUTES` Name of the attributes file
`static String`	`DOT_GIT_EXT` A bare repository typically ends with this string
`static String`	`DOT_GIT_IGNORE` Name of the ignore file
`static String`	`DOT_GIT_MODULES` Name of the submodules file
`static ObjectId`	`EMPTY_BLOB_ID` objectid for the empty blob
`static String`	`FETCH_HEAD` Special name for the "FETCH_HEAD" symbolic-ref.
`static String`	`GIT_ALTERNATE_OBJECT_DIRECTORIES_KEY` The environment variable that tells us where to look for objects, besides the default objects directory.
`static String`	`GIT_AUTHOR_EMAIL_KEY` The environment variable that contains the author's email
`static String`	`GIT_AUTHOR_NAME_KEY` The environment variable that contains the author's name
`static String`	`GIT_CEILING_DIRECTORIES_KEY` The environment variable that limits how close to the root of the file systems JGit will traverse when looking for a repository root.
`static String`	`GIT_COMMITTER_EMAIL_KEY` The environment variable that contains the commiter's email
`static String`	`GIT_COMMITTER_NAME_KEY` The environment variable that contains the commiter's name
`static String`	`GIT_CONFIG_NOSYSTEM_KEY` The environment variable that blocks use of the system config file
`static String`	`GIT_DIR_KEY` The environment variable that tells us which directory is the ".git" directory
`static String`	`GIT_INDEX_FILE_KEY` The environment variable that tells us which file holds the Git index.
`static String`	`GIT_OBJECT_DIRECTORY_KEY` The environment variable that tells us where objects are stored
`static String`	`GIT_WORK_TREE_KEY` The environment variable that tells us which directory is the working directory.
`static String`	`GITDIR` Prefix of the first line in a ".git" file
`static String`	`GITIGNORE_FILENAME` A gitignore file name
`static String`	`HEAD` Special name for the "HEAD" symbolic-ref.
`static String`	`HOOKS` Name of the folder (inside gitDir) where the hooks are stored.
`static String`	`INFO_EXCLUDE` Excludes-file
`static String`	`INFO_REFS` Info refs folder
`static String`	`LOGS` Logs folder name
`static String`	`MASTER` Default main branch name
`static String`	`MERGE_HEAD` name of the file containing the IDs of the parents of a merge commit
`static String`	`MERGE_MSG` name of the file containing the commit msg for a merge commit
`static String`	`MODULES` Name of the folder (inside gitDir) where submodules are stored
`static int`	`OBJ_BAD` An unknown or invalid object type code.
`static int`	`OBJ_BLOB` In-pack object type: blob.
`static int`	`OBJ_COMMIT` In-pack object type: commit.
`static int`	`OBJ_EXT` In-pack object type: extended types.
`static int`	`OBJ_OFS_DELTA` In-pack object type: offset delta
`static int`	`OBJ_REF_DELTA` In-pack object type: reference delta
`static int`	`OBJ_TAG` In-pack object type: annotated tag.
`static int`	`OBJ_TREE` In-pack object type: tree.
`static int`	`OBJ_TYPE_5` In-pack object type: reserved for future use.
`static int`	`OBJECT_ID_LENGTH` A Git object hash is 160 bits, i.e.
`static int`	`OBJECT_ID_STRING_LENGTH` A Git object can be expressed as a 40 character string of hexadecimal digits.
`static String`	`ORIG_HEAD` name of the ref ORIG_HEAD used by certain commands to store the original value of HEAD
`static String`	`OS_USER_DIR` The system property that contains the system user name
`static String`	`OS_USER_NAME_KEY` The system property that contains the system user name
`static byte[]`	`PACK_SIGNATURE` Pack file signature that occurs at file header - identifies file as Git packfile formatted.
`static String`	`PACKED_REFS` Packed refs file
`static String`	`R_HEADS` Prefix for branch refs
`static String`	`R_NOTES` Prefix for notes refs
`static String`	`R_NOTES_COMMITS` Standard notes ref
`static String`	`R_REFS` Prefix for any ref
`static String`	`R_REMOTES` Prefix for remotes refs
`static String`	`R_STASH` Standard stash ref
`static String`	`R_TAGS` Prefix for tag refs
`static String`	`REVERT_HEAD` name of the file containing the ID of a revert commit in case of conflicts
`static String`	`SHALLOW` Name of the .git/shallow file
`static String`	`SIGNED_OFF_BY_TAG` Beginning of the common "Signed-off-by: " commit message line
`static String`	`SQUASH_MSG` name of the file containing the commit msg for a squash commit
`static String`	`STASH` Default stash branch name
`static String`	`TYPE_BLOB` Text string that identifies an object as a blob.
`static String`	`TYPE_COMMIT` Text string that identifies an object as a commit.
`static String`	`TYPE_TAG` Text string that identifies an object as an annotated tag.
`static String`	`TYPE_TREE` Text string that identifies an object as a tree.
`static String`	`UNKNOWN_USER_DEFAULT` Default value for the user name if no other information is available

Method Summary

Methods
Modifier and Type	Method and Description
`static int`	`decodeTypeString(AnyObjectId id, byte[] typeString, byte endMark, MutableInteger offset)` Parse an encoded type string into a type constant.
`static byte[]`	`encode(String str)` Convert a string to a byte array in the standard character encoding.
`static byte[]`	`encodeASCII(long s)` Convert an integer into its decimal representation.
`static byte[]`	`encodeASCII(String s)` Convert a string to US-ASCII encoding.
`static byte[]`	`encodedTypeString(int typeCode)` Convert an OBJ_* type constant to an ASCII encoded string constant.
`static MessageDigest`	`newMessageDigest()` Create a new digest function for objects.
`static String`	`typeString(int typeCode)` Convert an OBJ_* type constant to a TYPE_* type constant.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - OBJECT_ID_LENGTH
```
public static final int OBJECT_ID_LENGTH
```
    A Git object hash is 160 bits, i.e. 20 bytes.
    Changing this assumption is not going to be as easy as changing this declaration.
    
    See Also:
    Constant Field Values
  - OBJECT_ID_STRING_LENGTH
```
public static final int OBJECT_ID_STRING_LENGTH
```
    A Git object can be expressed as a 40 character string of hexadecimal digits.
    
    See Also:
    OBJECT_ID_LENGTH, Constant Field Values
  - HEAD
```
public static final String HEAD
```
    Special name for the "HEAD" symbolic-ref.
    
    See Also:
    Constant Field Values
  - FETCH_HEAD
```
public static final String FETCH_HEAD
```
    Special name for the "FETCH_HEAD" symbolic-ref.
    
    See Also:
    Constant Field Values
  - TYPE_COMMIT
```
public static final String TYPE_COMMIT
```
    Text string that identifies an object as a commit.
    Commits connect trees into a string of project histories, where each commit is an assertion that the best way to continue is to use this other tree (set of files).
    
    See Also:
    Constant Field Values
  - TYPE_BLOB
```
public static final String TYPE_BLOB
```
    Text string that identifies an object as a blob.
    Blobs store whole file revisions. They are used for any user file, as well as for symlinks. Blobs form the bulk of any project's storage space.
    
    See Also:
    Constant Field Values
  - TYPE_TREE
```
public static final String TYPE_TREE
```
    Text string that identifies an object as a tree.
    Trees attach object ids (hashes) to names and file modes. The normal use for a tree is to store a version of a directory and its contents.
    
    See Also:
    Constant Field Values
  - TYPE_TAG
```
public static final String TYPE_TAG
```
    Text string that identifies an object as an annotated tag.
    Annotated tags store a pointer to any other object, and an additional message. It is most commonly used to record a stable release of the project.
    
    See Also:
    Constant Field Values
  - OBJ_BAD
```
public static final int OBJ_BAD
```
    An unknown or invalid object type code.
    
    See Also:
    Constant Field Values
  - OBJ_EXT
```
public static final int OBJ_EXT
```
    In-pack object type: extended types.
    This header code is reserved for future expansion. It is currently undefined/unsupported.
    
    See Also:
    Constant Field Values
  - OBJ_COMMIT
```
public static final int OBJ_COMMIT
```
    In-pack object type: commit.
    Indicates the associated object is a commit.
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    TYPE_COMMIT, Constant Field Values
  - OBJ_TREE
```
public static final int OBJ_TREE
```
    In-pack object type: tree.
    Indicates the associated object is a tree.
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    TYPE_BLOB, Constant Field Values
  - OBJ_BLOB
```
public static final int OBJ_BLOB
```
    In-pack object type: blob.
    Indicates the associated object is a blob.
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    TYPE_BLOB, Constant Field Values
  - OBJ_TAG
```
public static final int OBJ_TAG
```
    In-pack object type: annotated tag.
    Indicates the associated object is an annotated tag.
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    TYPE_TAG, Constant Field Values
  - OBJ_TYPE_5
```
public static final int OBJ_TYPE_5
```
    In-pack object type: reserved for future use.
    
    See Also:
    Constant Field Values
  - OBJ_OFS_DELTA
```
public static final int OBJ_OFS_DELTA
```
    In-pack object type: offset delta
    Objects stored with this type actually have a different type which must be obtained from their delta base object. Delta objects store only the changes needed to apply to the base object in order to recover the original object.
    An offset delta uses a negative offset from the start of this object to refer to its delta base. The base object must exist in this packfile (even in the case of a thin pack).
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    Constant Field Values
  - OBJ_REF_DELTA
```
public static final int OBJ_REF_DELTA
```
    In-pack object type: reference delta
    Objects stored with this type actually have a different type which must be obtained from their delta base object. Delta objects store only the changes needed to apply to the base object in order to recover the original object.
    A reference delta uses a full object id (hash) to reference the delta base. The base object is allowed to be omitted from the packfile, but only in the case of a thin pack being transferred over the network.
    This constant is fixed and is defined by the Git packfile format.
    
    See Also:
    Constant Field Values
  - PACK_SIGNATURE
```
public static final byte[] PACK_SIGNATURE
```
    Pack file signature that occurs at file header - identifies file as Git packfile formatted.
    This constant is fixed and is defined by the Git packfile format.
  - CHARACTER_ENCODING
```
public static final String CHARACTER_ENCODING
```
    Native character encoding for commit messages, file names...
    
    See Also:
    Constant Field Values
  - CHARSET
```
public static final Charset CHARSET
```
    Native character encoding for commit messages, file names...
  - MASTER
```
public static final String MASTER
```
    Default main branch name
    
    See Also:
    Constant Field Values
  - STASH
```
public static final String STASH
```
    Default stash branch name
    
    See Also:
    Constant Field Values
  - R_HEADS
```
public static final String R_HEADS
```
    Prefix for branch refs
    
    See Also:
    Constant Field Values
  - R_REMOTES
```
public static final String R_REMOTES
```
    Prefix for remotes refs
    
    See Also:
    Constant Field Values
  - R_TAGS
```
public static final String R_TAGS
```
    Prefix for tag refs
    
    See Also:
    Constant Field Values
  - R_NOTES
```
public static final String R_NOTES
```
    Prefix for notes refs
    
    See Also:
    Constant Field Values
  - R_NOTES_COMMITS
```
public static final String R_NOTES_COMMITS
```
    Standard notes ref
    
    See Also:
    Constant Field Values
  - R_REFS
```
public static final String R_REFS
```
    Prefix for any ref
    
    See Also:
    Constant Field Values
  - R_STASH
```
public static final String R_STASH
```
    Standard stash ref
    
    See Also:
    Constant Field Values
  - LOGS
```
public static final String LOGS
```
    Logs folder name
    
    See Also:
    Constant Field Values
  - INFO_REFS
```
public static final String INFO_REFS
```
    Info refs folder
    
    See Also:
    Constant Field Values
  - PACKED_REFS
```
public static final String PACKED_REFS
```
    Packed refs file
    
    See Also:
    Constant Field Values
  - INFO_EXCLUDE
```
public static final String INFO_EXCLUDE
```
    Excludes-file
    
    Since:
    
    3.0
    
    See Also:
    Constant Field Values
  - OS_USER_DIR
```
public static final String OS_USER_DIR
```
    The system property that contains the system user name
    
    Since:
    
    3.6
    
    See Also:
    Constant Field Values
  - OS_USER_NAME_KEY
```
public static final String OS_USER_NAME_KEY
```
    The system property that contains the system user name
    
    See Also:
    Constant Field Values
  - GIT_AUTHOR_NAME_KEY
```
public static final String GIT_AUTHOR_NAME_KEY
```
    The environment variable that contains the author's name
    
    See Also:
    Constant Field Values
  - GIT_AUTHOR_EMAIL_KEY
```
public static final String GIT_AUTHOR_EMAIL_KEY
```
    The environment variable that contains the author's email
    
    See Also:
    Constant Field Values
  - GIT_COMMITTER_NAME_KEY
```
public static final String GIT_COMMITTER_NAME_KEY
```
    The environment variable that contains the commiter's name
    
    See Also:
    Constant Field Values
  - GIT_COMMITTER_EMAIL_KEY
```
public static final String GIT_COMMITTER_EMAIL_KEY
```
    The environment variable that contains the commiter's email
    
    See Also:
    Constant Field Values
  - GIT_CONFIG_NOSYSTEM_KEY
```
public static final String GIT_CONFIG_NOSYSTEM_KEY
```
    The environment variable that blocks use of the system config file
    
    Since:
    
    3.3
    
    See Also:
    Constant Field Values
  - GIT_CEILING_DIRECTORIES_KEY
```
public static final String GIT_CEILING_DIRECTORIES_KEY
```
    The environment variable that limits how close to the root of the file systems JGit will traverse when looking for a repository root.
    
    See Also:
    Constant Field Values
  - GIT_DIR_KEY
```
public static final String GIT_DIR_KEY
```
    The environment variable that tells us which directory is the ".git" directory
    
    See Also:
    Constant Field Values
  - GIT_WORK_TREE_KEY
```
public static final String GIT_WORK_TREE_KEY
```
    The environment variable that tells us which directory is the working directory.
    
    See Also:
    Constant Field Values
  - GIT_INDEX_FILE_KEY
```
public static final String GIT_INDEX_FILE_KEY
```
    The environment variable that tells us which file holds the Git index.
    
    See Also:
    Constant Field Values
  - GIT_OBJECT_DIRECTORY_KEY
```
public static final String GIT_OBJECT_DIRECTORY_KEY
```
    The environment variable that tells us where objects are stored
    
    See Also:
    Constant Field Values
  - GIT_ALTERNATE_OBJECT_DIRECTORIES_KEY
```
public static final String GIT_ALTERNATE_OBJECT_DIRECTORIES_KEY
```
    The environment variable that tells us where to look for objects, besides the default objects directory.
    
    See Also:
    Constant Field Values
  - UNKNOWN_USER_DEFAULT
```
public static final String UNKNOWN_USER_DEFAULT
```
    Default value for the user name if no other information is available
    
    See Also:
    Constant Field Values
  - SIGNED_OFF_BY_TAG
```
public static final String SIGNED_OFF_BY_TAG
```
    Beginning of the common "Signed-off-by: " commit message line
    
    See Also:
    Constant Field Values
  - GITIGNORE_FILENAME
```
public static final String GITIGNORE_FILENAME
```
    A gitignore file name
    
    See Also:
    Constant Field Values
  - DEFAULT_REMOTE_NAME
```
public static final String DEFAULT_REMOTE_NAME
```
    Default remote name used by clone, push and fetch operations
    
    See Also:
    Constant Field Values
  - DOT_GIT
```
public static final String DOT_GIT
```
    Default name for the Git repository directory
    
    See Also:
    Constant Field Values
  - CONFIG
```
public static final String CONFIG
```
    Default name for the Git repository configuration
    
    See Also:
    Constant Field Values
  - DOT_GIT_EXT
```
public static final String DOT_GIT_EXT
```
    A bare repository typically ends with this string
    
    See Also:
    Constant Field Values
  - DOT_GIT_ATTRIBUTES
```
public static final String DOT_GIT_ATTRIBUTES
```
    Name of the attributes file
    
    Since:
    
    3.7
    
    See Also:
    Constant Field Values
  - DOT_GIT_IGNORE
```
public static final String DOT_GIT_IGNORE
```
    Name of the ignore file
    
    See Also:
    Constant Field Values
  - DOT_GIT_MODULES
```
public static final String DOT_GIT_MODULES
```
    Name of the submodules file
    
    See Also:
    Constant Field Values
  - SHALLOW
```
public static final String SHALLOW
```
    Name of the .git/shallow file
    
    See Also:
    Constant Field Values
  - GITDIR
```
public static final String GITDIR
```
    Prefix of the first line in a ".git" file
    
    Since:
    
    3.6
    
    See Also:
    Constant Field Values
  - MODULES
```
public static final String MODULES
```
    Name of the folder (inside gitDir) where submodules are stored
    
    Since:
    
    3.6
    
    See Also:
    Constant Field Values
  - HOOKS
```
public static final String HOOKS
```
    Name of the folder (inside gitDir) where the hooks are stored.
    
    Since:
    
    3.7
    
    See Also:
    Constant Field Values
  - MERGE_MSG
```
public static final String MERGE_MSG
```
    name of the file containing the commit msg for a merge commit
    
    See Also:
    Constant Field Values
  - MERGE_HEAD
```
public static final String MERGE_HEAD
```
    name of the file containing the IDs of the parents of a merge commit
    
    See Also:
    Constant Field Values
  - CHERRY_PICK_HEAD
```
public static final String CHERRY_PICK_HEAD
```
    name of the file containing the ID of a cherry pick commit in case of conflicts
    
    See Also:
    Constant Field Values
  - SQUASH_MSG
```
public static final String SQUASH_MSG
```
    name of the file containing the commit msg for a squash commit
    
    See Also:
    Constant Field Values
  - REVERT_HEAD
```
public static final String REVERT_HEAD
```
    name of the file containing the ID of a revert commit in case of conflicts
    
    See Also:
    Constant Field Values
  - ORIG_HEAD
```
public static final String ORIG_HEAD
```
    name of the ref ORIG_HEAD used by certain commands to store the original value of HEAD
    
    See Also:
    Constant Field Values
  - COMMIT_EDITMSG
```
public static final String COMMIT_EDITMSG
```
    Name of the file in which git commands and hooks store and read the message prepared for the upcoming commit.
    
    Since:
    
    4.0
    
    See Also:
    Constant Field Values
  - EMPTY_BLOB_ID
```
public static final ObjectId EMPTY_BLOB_ID
```
    objectid for the empty blob
- Method Detail
  - newMessageDigest
```
public static MessageDigest newMessageDigest()
```
    Create a new digest function for objects.
    
    Returns:
    a new digest object.
    
    Throws:
    
    RuntimeException - this Java virtual machine does not support the required hash function. Very unlikely given that JGit uses a hash function that is in the Java reference specification.
  - typeString
```
public static String typeString(int typeCode)
```
    Convert an OBJ_* type constant to a TYPE_* type constant.
    
    Parameters:
    typeCode - the type code, from a pack representation.
    
    Returns:
    the canonical string name of this type.
  - encodedTypeString
```
public static byte[] encodedTypeString(int typeCode)
```
    Convert an OBJ_* type constant to an ASCII encoded string constant.
    The ASCII encoded string is often the canonical representation of the type within a loose object header, or within a tag header.
    
    Parameters:
    typeCode - the type code, from a pack representation.
    
    Returns:
    the canonical ASCII encoded name of this type.
  - decodeTypeString
```
public static int decodeTypeString(AnyObjectId id,
                   byte[] typeString,
                   byte endMark,
                   MutableInteger offset)
                            throws CorruptObjectException
```
    Parse an encoded type string into a type constant.
    
    Parameters:
    id - object id this type string came from; may be null if that is not known at the time the parse is occurring.
    typeString - string version of the type code.
    endMark - character immediately following the type string. Usually ' ' (space) or '\n' (line feed).
    offset - position within typeString where the parse should start. Updated with the new position (just past endMark when the parse is successful.
    
    Returns:
    a type code constant (one of OBJ_BLOB, OBJ_COMMIT, OBJ_TAG, OBJ_TREE.
    
    Throws:
    
    CorruptObjectException - there is no valid type identified by typeString.
  - encodeASCII
```
public static byte[] encodeASCII(long s)
```
    Convert an integer into its decimal representation.
    
    Parameters:
    s - the integer to convert.
    
    Returns:
    a decimal representation of the input integer. The returned array is the smallest array that will hold the value.
  - encodeASCII
```
public static byte[] encodeASCII(String s)
```
    Convert a string to US-ASCII encoding.
    
    Parameters:
    s - the string to convert. Must not contain any characters over 127 (outside of 7-bit ASCII).
    
    Returns:
    a byte array of the same length as the input string, holding the same characters, in the same order.
    
    Throws:
    
    IllegalArgumentException - the input string contains one or more characters outside of the 7-bit ASCII character space.
  - encode
```
public static byte[] encode(String str)
```
    Convert a string to a byte array in the standard character encoding.
    
    Parameters:
    str - the string to convert. May contain any Unicode characters.
    
    Returns:
    a byte array representing the requested string, encoded using the default character encoding (UTF-8).
    See Also:
    CHARACTER_ENCODING

Class Constants

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

OBJECT_ID_LENGTH

OBJECT_ID_STRING_LENGTH

HEAD

FETCH_HEAD

TYPE_COMMIT

TYPE_BLOB

TYPE_TREE

TYPE_TAG

OBJ_BAD

OBJ_EXT

OBJ_COMMIT

OBJ_TREE

OBJ_BLOB

OBJ_TAG

OBJ_TYPE_5

OBJ_OFS_DELTA

OBJ_REF_DELTA

PACK_SIGNATURE

CHARACTER_ENCODING

CHARSET

MASTER

STASH

R_HEADS

R_REMOTES

R_TAGS

R_NOTES

R_NOTES_COMMITS

R_REFS

R_STASH

LOGS

INFO_REFS

PACKED_REFS

INFO_EXCLUDE

OS_USER_DIR

OS_USER_NAME_KEY

GIT_AUTHOR_NAME_KEY

GIT_AUTHOR_EMAIL_KEY

GIT_COMMITTER_NAME_KEY

GIT_COMMITTER_EMAIL_KEY

GIT_CONFIG_NOSYSTEM_KEY

GIT_CEILING_DIRECTORIES_KEY

GIT_DIR_KEY

GIT_WORK_TREE_KEY

GIT_INDEX_FILE_KEY

GIT_OBJECT_DIRECTORY_KEY

GIT_ALTERNATE_OBJECT_DIRECTORIES_KEY

UNKNOWN_USER_DEFAULT

SIGNED_OFF_BY_TAG

GITIGNORE_FILENAME

DEFAULT_REMOTE_NAME

DOT_GIT

CONFIG

DOT_GIT_EXT

DOT_GIT_ATTRIBUTES

DOT_GIT_IGNORE

DOT_GIT_MODULES

SHALLOW

GITDIR

MODULES

HOOKS

MERGE_MSG

MERGE_HEAD

CHERRY_PICK_HEAD

SQUASH_MSG

REVERT_HEAD

ORIG_HEAD

COMMIT_EDITMSG

EMPTY_BLOB_ID

Method Detail

newMessageDigest

typeString

encodedTypeString

decodeTypeString

encodeASCII

encodeASCII