Move ArchiveCommand into standard porcelain API

Allow use of ArchiveCommand without depending on the jgit command-line
tools.

To avoid complicating the process of installing and upgrading JGit,
this does not add a dependency by the org.eclipse.jgit bundle on
commons-compress.  Instead, the caller is responsible for registering
any formats they want to use by calling ArchiveCommand.registerFormat.

This patch puts functionality that requires an archiver into a
separate org.eclipse.jgit.archive bundle for people who want it.  One
can use it by calling ArchiveCommand.registerFormat directly to
register its formats or by relying on OSGi class loading to load
org.eclipse.jgit.archive.FormatActivator, which takes care of
registration automatically.

Once the appropriate formats are registered, you can make a tar or zip
from a git tree object as follows:

	ArchiveCommand cmd = git.archive();
	try {
		cmd.setTree(tree).setFormat(fmt).setOutputStream(out).call();
	} finally {
		cmd.release();
	}

Change-Id: I418e7e7d76422dc6f010d0b3b624d7bec3b20c6e

30 files changed, 851 insertions, 36 deletions

diff --git a/org.eclipse.jgit.archive/.classpath b/org.eclipse.jgit.archive/.classpath
new file mode 100644
index 0000000000..304e86186a
--- /dev/null
+++ b/org.eclipse.jgit.archive/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/org.eclipse.jgit.archive/.gitignore b/org.eclipse.jgit.archive/.gitignore
new file mode 100644
index 0000000000..09e3bc9b24
--- /dev/null
+++ b/org.eclipse.jgit.archive/.gitignore
@@ -0,0 +1,2 @@
+/bin/
+/target/
diff --git a/org.eclipse.jgit.archive/.project b/org.eclipse.jgit.archive/.project
new file mode 100644
index 0000000000..4c7f39466a
--- /dev/null
+++ b/org.eclipse.jgit.archive/.project
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.eclipse.jgit.archive</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.api.tools.apiAnalysisBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.pde.api.tools.apiAnalysisNature</nature>
+	</natures>
+</projectDescription>
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.core.resources.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.core.resources.prefs
new file mode 100644
index 0000000000..66ac15c47c
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.core.resources.prefs
@@ -0,0 +1,3 @@
+#Mon Aug 11 16:46:12 PDT 2008
+eclipse.preferences.version=1
+encoding/<project>=UTF-8
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.core.runtime.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.core.runtime.prefs
new file mode 100644
index 0000000000..006e07ede5
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.core.runtime.prefs
@@ -0,0 +1,3 @@
+#Mon Mar 24 18:55:50 EDT 2008
+eclipse.preferences.version=1
+line.separator=\n
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000000..9704453d13
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,393 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.annotation.missingNonNullByDefaultAnnotation=ignore
+org.eclipse.jdt.core.compiler.annotation.nonnull=org.eclipse.jdt.annotation.NonNull
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+org.eclipse.jdt.core.compiler.annotation.nullable=org.eclipse.jdt.annotation.Nullable
+org.eclipse.jdt.core.compiler.annotation.nullanalysis=disabled
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.doc.comment.support=enabled
+org.eclipse.jdt.core.compiler.problem.annotationSuperInterface=warning
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+org.eclipse.jdt.core.formatter.insert_space_after_opening_bracket_in_array_reference=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_cast=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_catch=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_constructor_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_enum_constant=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_for=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_if=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_invocation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_parenthesized_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_switch=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_synchronized=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_try=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_while=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_postfix_operator=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_prefix_operator=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_question_in_conditional=insert
+org.eclipse.jdt.core.formatter.insert_space_after_question_in_wildcard=do not insert
+org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_for=insert
+org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_try_resources=insert
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+org.eclipse.jdt.core.formatter.insert_space_before_and_in_type_parameter=insert
+org.eclipse.jdt.core.formatter.insert_space_before_assignment_operator=insert
+org.eclipse.jdt.core.formatter.insert_space_before_at_in_annotation_type_declaration=insert
+org.eclipse.jdt.core.formatter.insert_space_before_binary_operator=insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_parameterized_type_reference=do not insert
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+org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_parameters=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_brace_in_array_initializer=insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_bracket_in_array_allocation_expression=do not insert
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+org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_method_invocation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_parenthesized_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_switch=do not insert
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+org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_try=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_while=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_assert=insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_case=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_conditional=insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_default=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_for=insert
+org.eclipse.jdt.core.formatter.insert_space_before_colon_in_labeled_statement=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_allocation_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_annotation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_array_initializer=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_parameters=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_throws=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_constant_arguments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_declarations=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_explicitconstructorcall_arguments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_increments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_inits=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_parameters=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_throws=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_invocation_arguments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_field_declarations=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_local_declarations=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_parameterized_type_reference=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_superinterfaces=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_arguments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_parameters=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_ellipsis=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_parameterized_type_reference=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_arguments=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_parameters=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_annotation_type_declaration=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_anonymous_type_declaration=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_array_initializer=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_block=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_constructor_declaration=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_enum_constant=insert
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+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_method_declaration=insert
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+org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_allocation_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_reference=do not insert
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+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation_type_member_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_catch=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_constructor_declaration=do not insert
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+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_for=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_if=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_invocation=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_parenthesized_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_synchronized=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_try=insert
+org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_while=insert
+org.eclipse.jdt.core.formatter.insert_space_before_parenthesized_expression_in_return=insert
+org.eclipse.jdt.core.formatter.insert_space_before_parenthesized_expression_in_throw=insert
+org.eclipse.jdt.core.formatter.insert_space_before_postfix_operator=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_prefix_operator=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional=insert
+org.eclipse.jdt.core.formatter.insert_space_before_question_in_wildcard=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_semicolon=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_for=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_try_resources=do not insert
+org.eclipse.jdt.core.formatter.insert_space_before_unary_operator=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_brackets_in_array_type_reference=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_braces_in_array_initializer=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_annotation_type_member_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_constructor_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_enum_constant=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_declaration=do not insert
+org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_invocation=do not insert
+org.eclipse.jdt.core.formatter.join_lines_in_comments=true
+org.eclipse.jdt.core.formatter.join_wrapped_lines=true
+org.eclipse.jdt.core.formatter.keep_else_statement_on_same_line=false
+org.eclipse.jdt.core.formatter.keep_empty_array_initializer_on_one_line=false
+org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line=false
+org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line=false
+org.eclipse.jdt.core.formatter.lineSplit=80
+org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column=false
+org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column=false
+org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body=0
+org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve=1
+org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line=true
+org.eclipse.jdt.core.formatter.tabulation.char=tab
+org.eclipse.jdt.core.formatter.tabulation.size=4
+org.eclipse.jdt.core.formatter.use_on_off_tags=true
+org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=false
+org.eclipse.jdt.core.formatter.wrap_before_binary_operator=true
+org.eclipse.jdt.core.formatter.wrap_before_or_operator_multicatch=true
+org.eclipse.jdt.core.formatter.wrap_outer_expressions_when_nested=true
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.ui.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.ui.prefs
new file mode 100644
index 0000000000..c336cce6ed
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.jdt.ui.prefs
@@ -0,0 +1,61 @@
+eclipse.preferences.version=1
+editor_save_participant_org.eclipse.jdt.ui.postsavelistener.cleanup=true
+formatter_profile=_JGit Format
+formatter_settings_version=12
+org.eclipse.jdt.ui.ignorelowercasenames=true
+org.eclipse.jdt.ui.importorder=java;javax;org;com;
+org.eclipse.jdt.ui.ondemandthreshold=99
+org.eclipse.jdt.ui.staticondemandthreshold=99
+org.eclipse.jdt.ui.text.custom_code_templates=<?xml version\="1.0" encoding\="UTF-8"?><templates/>
+sp_cleanup.add_default_serial_version_id=true
+sp_cleanup.add_generated_serial_version_id=false
+sp_cleanup.add_missing_annotations=false
+sp_cleanup.add_missing_deprecated_annotations=true
+sp_cleanup.add_missing_methods=false
+sp_cleanup.add_missing_nls_tags=false
+sp_cleanup.add_missing_override_annotations=true
+sp_cleanup.add_missing_override_annotations_interface_methods=false
+sp_cleanup.add_serial_version_id=false
+sp_cleanup.always_use_blocks=true
+sp_cleanup.always_use_parentheses_in_expressions=false
+sp_cleanup.always_use_this_for_non_static_field_access=false
+sp_cleanup.always_use_this_for_non_static_method_access=false
+sp_cleanup.convert_to_enhanced_for_loop=false
+sp_cleanup.correct_indentation=false
+sp_cleanup.format_source_code=true
+sp_cleanup.format_source_code_changes_only=true
+sp_cleanup.make_local_variable_final=false
+sp_cleanup.make_parameters_final=false
+sp_cleanup.make_private_fields_final=true
+sp_cleanup.make_type_abstract_if_missing_method=false
+sp_cleanup.make_variable_declarations_final=false
+sp_cleanup.never_use_blocks=false
+sp_cleanup.never_use_parentheses_in_expressions=true
+sp_cleanup.on_save_use_additional_actions=true
+sp_cleanup.organize_imports=false
+sp_cleanup.qualify_static_field_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_member_accesses_through_instances_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_through_subtypes_with_declaring_class=true
+sp_cleanup.qualify_static_member_accesses_with_declaring_class=false
+sp_cleanup.qualify_static_method_accesses_with_declaring_class=false
+sp_cleanup.remove_private_constructors=true
+sp_cleanup.remove_trailing_whitespaces=true
+sp_cleanup.remove_trailing_whitespaces_all=true
+sp_cleanup.remove_trailing_whitespaces_ignore_empty=false
+sp_cleanup.remove_unnecessary_casts=false
+sp_cleanup.remove_unnecessary_nls_tags=false
+sp_cleanup.remove_unused_imports=false
+sp_cleanup.remove_unused_local_variables=false
+sp_cleanup.remove_unused_private_fields=true
+sp_cleanup.remove_unused_private_members=false
+sp_cleanup.remove_unused_private_methods=true
+sp_cleanup.remove_unused_private_types=true
+sp_cleanup.sort_members=false
+sp_cleanup.sort_members_all=false
+sp_cleanup.use_blocks=false
+sp_cleanup.use_blocks_only_for_return_and_throw=false
+sp_cleanup.use_parentheses_in_expressions=false
+sp_cleanup.use_this_for_non_static_field_access=false
+sp_cleanup.use_this_for_non_static_field_access_only_if_necessary=true
+sp_cleanup.use_this_for_non_static_method_access=false
+sp_cleanup.use_this_for_non_static_method_access_only_if_necessary=true
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.tasks.ui.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.tasks.ui.prefs
new file mode 100644
index 0000000000..823c0f56ae
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.tasks.ui.prefs
@@ -0,0 +1,4 @@
+#Tue Jul 19 20:11:28 CEST 2011
+eclipse.preferences.version=1
+project.repository.kind=bugzilla
+project.repository.url=https\://bugs.eclipse.org/bugs
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.team.ui.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.team.ui.prefs
new file mode 100644
index 0000000000..0cba949fb7
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.mylyn.team.ui.prefs
@@ -0,0 +1,3 @@
+#Tue Jul 19 20:11:28 CEST 2011
+commit.comment.template=${task.description} \n\nBug\: ${task.key}
+eclipse.preferences.version=1
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.pde.api.tools.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.pde.api.tools.prefs
new file mode 100644
index 0000000000..cd148d9049
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.pde.api.tools.prefs
@@ -0,0 +1,94 @@
+#Tue Oct 18 00:52:01 CEST 2011
+ANNOTATION_ELEMENT_TYPE_ADDED_METHOD_WITHOUT_DEFAULT_VALUE=Error
+ANNOTATION_ELEMENT_TYPE_CHANGED_TYPE_CONVERSION=Error
+ANNOTATION_ELEMENT_TYPE_REMOVED_FIELD=Error
+ANNOTATION_ELEMENT_TYPE_REMOVED_METHOD=Error
+ANNOTATION_ELEMENT_TYPE_REMOVED_TYPE_MEMBER=Error
+API_COMPONENT_ELEMENT_TYPE_REMOVED_API_TYPE=Error
+API_COMPONENT_ELEMENT_TYPE_REMOVED_REEXPORTED_API_TYPE=Error
+API_COMPONENT_ELEMENT_TYPE_REMOVED_REEXPORTED_TYPE=Error
+API_COMPONENT_ELEMENT_TYPE_REMOVED_TYPE=Error
+CLASS_ELEMENT_TYPE_ADDED_METHOD=Error
+CLASS_ELEMENT_TYPE_ADDED_RESTRICTIONS=Error
+CLASS_ELEMENT_TYPE_ADDED_TYPE_PARAMETER=Error
+CLASS_ELEMENT_TYPE_CHANGED_CONTRACTED_SUPERINTERFACES_SET=Error
+CLASS_ELEMENT_TYPE_CHANGED_DECREASE_ACCESS=Error
+CLASS_ELEMENT_TYPE_CHANGED_NON_ABSTRACT_TO_ABSTRACT=Error
+CLASS_ELEMENT_TYPE_CHANGED_NON_FINAL_TO_FINAL=Error
+CLASS_ELEMENT_TYPE_CHANGED_TYPE_CONVERSION=Error
+CLASS_ELEMENT_TYPE_REMOVED_CONSTRUCTOR=Error
+CLASS_ELEMENT_TYPE_REMOVED_FIELD=Error
+CLASS_ELEMENT_TYPE_REMOVED_METHOD=Error
+CLASS_ELEMENT_TYPE_REMOVED_SUPERCLASS=Error
+CLASS_ELEMENT_TYPE_REMOVED_TYPE_MEMBER=Error
+CLASS_ELEMENT_TYPE_REMOVED_TYPE_PARAMETER=Error
+CONSTRUCTOR_ELEMENT_TYPE_ADDED_TYPE_PARAMETER=Error
+CONSTRUCTOR_ELEMENT_TYPE_CHANGED_DECREASE_ACCESS=Error
+CONSTRUCTOR_ELEMENT_TYPE_CHANGED_VARARGS_TO_ARRAY=Error
+CONSTRUCTOR_ELEMENT_TYPE_REMOVED_TYPE_PARAMETER=Error
+ENUM_ELEMENT_TYPE_CHANGED_CONTRACTED_SUPERINTERFACES_SET=Error
+ENUM_ELEMENT_TYPE_CHANGED_TYPE_CONVERSION=Error
+ENUM_ELEMENT_TYPE_REMOVED_ENUM_CONSTANT=Error
+ENUM_ELEMENT_TYPE_REMOVED_FIELD=Error
+ENUM_ELEMENT_TYPE_REMOVED_METHOD=Error
+ENUM_ELEMENT_TYPE_REMOVED_TYPE_MEMBER=Error
+FIELD_ELEMENT_TYPE_ADDED_VALUE=Error
+FIELD_ELEMENT_TYPE_CHANGED_DECREASE_ACCESS=Error
+FIELD_ELEMENT_TYPE_CHANGED_FINAL_TO_NON_FINAL_STATIC_CONSTANT=Error
+FIELD_ELEMENT_TYPE_CHANGED_NON_FINAL_TO_FINAL=Error
+FIELD_ELEMENT_TYPE_CHANGED_NON_STATIC_TO_STATIC=Error
+FIELD_ELEMENT_TYPE_CHANGED_STATIC_TO_NON_STATIC=Error
+FIELD_ELEMENT_TYPE_CHANGED_TYPE=Error
+FIELD_ELEMENT_TYPE_CHANGED_VALUE=Error
+FIELD_ELEMENT_TYPE_REMOVED_TYPE_ARGUMENT=Error
+FIELD_ELEMENT_TYPE_REMOVED_VALUE=Error
+ILLEGAL_EXTEND=Warning
+ILLEGAL_IMPLEMENT=Warning
+ILLEGAL_INSTANTIATE=Warning
+ILLEGAL_OVERRIDE=Warning
+ILLEGAL_REFERENCE=Warning
+INTERFACE_ELEMENT_TYPE_ADDED_FIELD=Error
+INTERFACE_ELEMENT_TYPE_ADDED_METHOD=Error
+INTERFACE_ELEMENT_TYPE_ADDED_RESTRICTIONS=Error
+INTERFACE_ELEMENT_TYPE_ADDED_SUPER_INTERFACE_WITH_METHODS=Error
+INTERFACE_ELEMENT_TYPE_ADDED_TYPE_PARAMETER=Error
+INTERFACE_ELEMENT_TYPE_CHANGED_CONTRACTED_SUPERINTERFACES_SET=Error
+INTERFACE_ELEMENT_TYPE_CHANGED_TYPE_CONVERSION=Error
+INTERFACE_ELEMENT_TYPE_REMOVED_FIELD=Error
+INTERFACE_ELEMENT_TYPE_REMOVED_METHOD=Error
+INTERFACE_ELEMENT_TYPE_REMOVED_TYPE_MEMBER=Error
+INTERFACE_ELEMENT_TYPE_REMOVED_TYPE_PARAMETER=Error
+INVALID_JAVADOC_TAG=Ignore
+INVALID_REFERENCE_IN_SYSTEM_LIBRARIES=Error
+LEAK_EXTEND=Warning
+LEAK_FIELD_DECL=Warning
+LEAK_IMPLEMENT=Warning
+LEAK_METHOD_PARAM=Warning
+LEAK_METHOD_RETURN_TYPE=Warning
+METHOD_ELEMENT_TYPE_ADDED_RESTRICTIONS=Error
+METHOD_ELEMENT_TYPE_ADDED_TYPE_PARAMETER=Error
+METHOD_ELEMENT_TYPE_CHANGED_DECREASE_ACCESS=Error
+METHOD_ELEMENT_TYPE_CHANGED_NON_ABSTRACT_TO_ABSTRACT=Error
+METHOD_ELEMENT_TYPE_CHANGED_NON_FINAL_TO_FINAL=Error
+METHOD_ELEMENT_TYPE_CHANGED_NON_STATIC_TO_STATIC=Error
+METHOD_ELEMENT_TYPE_CHANGED_STATIC_TO_NON_STATIC=Error
+METHOD_ELEMENT_TYPE_CHANGED_VARARGS_TO_ARRAY=Error
+METHOD_ELEMENT_TYPE_REMOVED_ANNOTATION_DEFAULT_VALUE=Error
+METHOD_ELEMENT_TYPE_REMOVED_TYPE_PARAMETER=Error
+TYPE_PARAMETER_ELEMENT_TYPE_ADDED_CLASS_BOUND=Error
+TYPE_PARAMETER_ELEMENT_TYPE_ADDED_INTERFACE_BOUND=Error
+TYPE_PARAMETER_ELEMENT_TYPE_CHANGED_CLASS_BOUND=Error
+TYPE_PARAMETER_ELEMENT_TYPE_CHANGED_INTERFACE_BOUND=Error
+TYPE_PARAMETER_ELEMENT_TYPE_REMOVED_CLASS_BOUND=Error
+TYPE_PARAMETER_ELEMENT_TYPE_REMOVED_INTERFACE_BOUND=Error
+UNUSED_PROBLEM_FILTERS=Warning
+automatically_removed_unused_problem_filters=false
+eclipse.preferences.version=1
+incompatible_api_component_version=Error
+incompatible_api_component_version_include_major_without_breaking_change=Disabled
+incompatible_api_component_version_include_minor_without_api_change=Disabled
+invalid_since_tag_version=Error
+malformed_since_tag=Error
+missing_since_tag=Error
+report_api_breakage_when_major_version_incremented=Disabled
+report_resolution_errors_api_component=Warning
diff --git a/org.eclipse.jgit.archive/.settings/org.eclipse.pde.core.prefs b/org.eclipse.jgit.archive/.settings/org.eclipse.pde.core.prefs
new file mode 100644
index 0000000000..82793f2d27
--- /dev/null
+++ b/org.eclipse.jgit.archive/.settings/org.eclipse.pde.core.prefs
@@ -0,0 +1,3 @@
+#Thu Jan 14 14:34:32 CST 2010
+eclipse.preferences.version=1
+resolve.requirebundle=false
diff --git a/org.eclipse.jgit.archive/META-INF/MANIFEST.MF b/org.eclipse.jgit.archive/META-INF/MANIFEST.MF
new file mode 100644
index 0000000000..3d312e139f
--- /dev/null
+++ b/org.eclipse.jgit.archive/META-INF/MANIFEST.MF
@@ -0,0 +1,17 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: %plugin_name
+Bundle-SymbolicName: org.eclipse.jgit.archive
+Bundle-Version: 3.0.0.qualifier
+Bundle-Vendor: %provider_name
+Bundle-Localization: plugin
+Bundle-RequiredExecutionEnvironment: J2SE-1.5
+Import-Package: org.apache.commons.compress.archivers;version="[1.3,2.0)",
+ org.apache.commons.compress.archivers.tar;version="[1.3,2.0)",
+ org.apache.commons.compress.archivers.zip;version="[1.3,2.0)",
+ org.eclipse.jgit.api;version="[3.0.0,3.1.0)",
+ org.eclipse.jgit.lib;version="[3.0.0,3.1.0)",
+ org.osgi.framework;version="[4.0,5.0)"
+Bundle-ActivationPolicy: lazy
+Bundle-Activator: org.eclipse.jgit.archive.FormatActivator
+Export-Package: org.eclipse.jgit.archive;version="3.0.0"
diff --git a/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF
new file mode 100644
index 0000000000..02ff2c5715
--- /dev/null
+++ b/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF
@@ -0,0 +1,7 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: org.eclipse.jgit.archive - Sources
+Bundle-SymbolicName: org.eclipse.jgit.archive.source;singleton:=true
+Bundle-Vendor: Eclipse.org - JGit
+Bundle-Version: 3.0.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.archive;version="3.0.0";roots="."
diff --git a/org.eclipse.jgit.archive/about.html b/org.eclipse.jgit.archive/about.html
new file mode 100644
index 0000000000..230f40e755
--- /dev/null
+++ b/org.eclipse.jgit.archive/about.html
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="ISO-8859-1" ?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
+<title>Eclipse Distribution License - Version 1.0</title>
+<style type="text/css">
+  body {
+    size: 8.5in 11.0in;
+    margin: 0.25in 0.5in 0.25in 0.5in;
+    tab-interval: 0.5in;
+    }
+  p {
+    margin-left: auto;
+    margin-top:  0.5em;
+    margin-bottom: 0.5em;
+    }
+  p.list {
+    margin-left: 0.5in;
+    margin-top:  0.05em;
+    margin-bottom: 0.05em;
+    }
+  </style>
+
+</head>
+
+<body lang="EN-US">
+
+<p><b>Eclipse Distribution License - v 1.0</b></p>
+
+<p>Copyright (c) 2007, Eclipse Foundation, Inc. and its licensors. </p>
+
+<p>All rights reserved.</p>
+<p>Redistribution and use in source and binary forms, with or without modification,
+	are permitted provided that the following conditions are met:
+<ul><li>Redistributions of source code must retain the above copyright notice,
+	this list of conditions and the following disclaimer. </li>
+<li>Redistributions in binary form must reproduce the above copyright notice,
+	this list of conditions and the following disclaimer in the documentation
+	and/or other materials provided with the distribution. </li>
+<li>Neither the name of the Eclipse Foundation, Inc. nor the names of its
+	contributors may be used to endorse or promote products derived from
+	this software without specific prior written permission. </li></ul>
+</p>
+<p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.</p>
+
+</body>
+
+</html>
diff --git a/org.eclipse.jgit.archive/build.properties b/org.eclipse.jgit.archive/build.properties
new file mode 100644
index 0000000000..d944674ba0
--- /dev/null
+++ b/org.eclipse.jgit.archive/build.properties
@@ -0,0 +1,6 @@
+source.. = src/
+output.. = bin/
+bin.includes = META-INF/,\
+               .,\
+               about.html,\
+               plugin.properties
diff --git a/org.eclipse.jgit.archive/plugin.properties b/org.eclipse.jgit.archive/plugin.properties
new file mode 100644
index 0000000000..f4269b7c55
--- /dev/null
+++ b/org.eclipse.jgit.archive/plugin.properties
@@ -0,0 +1,2 @@
+plugin_name=JGit Archive Formats
+provider_name=Eclipse JGit
diff --git a/org.eclipse.jgit.archive/pom.xml b/org.eclipse.jgit.archive/pom.xml
new file mode 100644
index 0000000000..963e7c2828
--- /dev/null
+++ b/org.eclipse.jgit.archive/pom.xml
@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+   Copyright (C) 2013, Google Inc.
+   and other copyright owners as documented in the project's IP log.
+
+   This program and the accompanying materials are made available
+   under the terms of the Eclipse Distribution License v1.0 which
+   accompanies this distribution, is reproduced below, and is
+   available at http://www.eclipse.org/org/documents/edl-v10.php
+
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or
+   without modification, are permitted provided that the following
+   conditions are met:
+
+   - Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above
+     copyright notice, this list of conditions and the following
+     disclaimer in the documentation and/or other materials provided
+     with the distribution.
+
+   - Neither the name of the Eclipse Foundation, Inc. nor the
+     names of its contributors may be used to endorse or promote
+     products derived from this software without specific prior
+     written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+   CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+   INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+   CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.eclipse.jgit</groupId>
+    <artifactId>org.eclipse.jgit-parent</artifactId>
+    <version>3.0.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>org.eclipse.jgit.archive</artifactId>
+  <name>JGit Archive Formats</name>
+
+  <description>
+    Support for archiving a Git tree in formats such as zip and tar.
+    This is a separate bundle from org.eclipse.jgit to avoid a
+    dependency by the latter on commons-compress.
+  </description>
+
+  <properties>
+    <translate-qualifier/>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-compress</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.eclipse.jgit</groupId>
+      <artifactId>org.eclipse.jgit</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.osgi</groupId>
+      <artifactId>org.osgi.core</artifactId>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <sourceDirectory>src/</sourceDirectory>
+
+    <resources>
+      <resource>
+        <directory>.</directory>
+        <includes>
+          <include>plugin.properties</include>
+          <include>about.html</include>
+        </includes>
+      </resource>
+    </resources>
+
+    <plugins>
+      <plugin>
+        <artifactId>maven-jar-plugin</artifactId>
+        <configuration>
+          <archive>
+            <manifestFile>${bundle-manifest}</manifestFile>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/FormatActivator.java b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/FormatActivator.java
index 4889faf338..8c0a581530 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/FormatActivator.java
+++ b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/FormatActivator.java
@@ -40,8 +40,9 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-package org.eclipse.jgit.pgm.archive;
+package org.eclipse.jgit.archive;
 
+import org.eclipse.jgit.api.ArchiveCommand;
 import org.osgi.framework.BundleActivator;
 import org.osgi.framework.BundleContext;
 
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/TarFormat.java b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/TarFormat.java
index 55f6ca942e..2e5683c2b5 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/TarFormat.java
+++ b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/TarFormat.java
@@ -40,7 +40,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-package org.eclipse.jgit.pgm.archive;
+package org.eclipse.jgit.archive;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -49,6 +49,7 @@ import org.apache.commons.compress.archivers.ArchiveOutputStream;
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
 import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 import org.apache.commons.compress.archivers.tar.TarConstants;
+import org.eclipse.jgit.api.ArchiveCommand;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.ObjectLoader;
 
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/ZipFormat.java b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/ZipFormat.java
index a23cc9f38a..19328775a4 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/ZipFormat.java
+++ b/org.eclipse.jgit.archive/src/org/eclipse/jgit/archive/ZipFormat.java
@@ -40,7 +40,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-package org.eclipse.jgit.pgm.archive;
+package org.eclipse.jgit.archive;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -48,6 +48,7 @@ import java.io.OutputStream;
 import org.apache.commons.compress.archivers.ArchiveOutputStream;
 import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
 import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
+import org.eclipse.jgit.api.ArchiveCommand;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.ObjectLoader;
 
diff --git a/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF b/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
index a26e4b4663..e8ec5a20fd 100644
--- a/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
@@ -6,11 +6,9 @@ Bundle-Version: 3.0.0.qualifier
 Bundle-Vendor: %provider_name
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
-Import-Package: org.apache.commons.compress.archivers;version="[1.3,2.0)",
- org.apache.commons.compress.archivers.tar;version="[1.3,2.0)",
- org.apache.commons.compress.archivers.zip;version="[1.3,2.0)",
- org.eclipse.jgit.api;version="[3.0.0,3.1.0)",
+Import-Package: org.eclipse.jgit.api;version="[3.0.0,3.1.0)",
  org.eclipse.jgit.api.errors;version="[3.0.0,3.1.0)",
+ org.eclipse.jgit.archive;version="[3.0.0,3.1.0)",
  org.eclipse.jgit.awtui;version="[3.0.0,3.1.0)",
  org.eclipse.jgit.blame;version="[3.0.0,3.1.0)",
  org.eclipse.jgit.diff;version="[3.0.0,3.1.0)",
@@ -34,10 +32,8 @@ Import-Package: org.apache.commons.compress.archivers;version="[1.3,2.0)",
  org.eclipse.jgit.util;version="[3.0.0,3.1.0)",
  org.eclipse.jgit.util.io;version="[3.0.0,3.1.0)",
  org.kohsuke.args4j;version="[2.0.12,2.1.0)",
- org.kohsuke.args4j.spi;version="[2.0.12,2.1.0)",
- org.osgi.framework;version="[4.0,5.0)"
+ org.kohsuke.args4j.spi;version="[2.0.12,2.1.0)"
 Bundle-ActivationPolicy: lazy
-Bundle-Activator: org.eclipse.jgit.pgm.archive.FormatActivator
 Export-Package: org.eclipse.jgit.pgm;version="3.0.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.nls,
diff --git a/org.eclipse.jgit.pgm/pom.xml b/org.eclipse.jgit.pgm/pom.xml
index fe1c3b2a15..40adc7a410 100644
--- a/org.eclipse.jgit.pgm/pom.xml
+++ b/org.eclipse.jgit.pgm/pom.xml
@@ -72,8 +72,9 @@
     </dependency>
 
     <dependency>
-      <groupId>org.apache.commons</groupId>
-      <artifactId>commons-compress</artifactId>
+      <groupId>org.eclipse.jgit</groupId>
+      <artifactId>org.eclipse.jgit.archive</artifactId>
+      <version>${project.version}</version>
     </dependency>
 
     <dependency>
@@ -87,11 +88,6 @@
       <artifactId>org.eclipse.jgit.ui</artifactId>
       <version>${project.version}</version>
     </dependency>
-
-    <dependency>
-      <groupId>org.osgi</groupId>
-      <artifactId>org.osgi.core</artifactId>
-    </dependency>
   </dependencies>
 
   <profiles>
diff --git a/org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties b/org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties
index 4a1548134f..48b61edb03 100644
--- a/org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties
+++ b/org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties
@@ -7,8 +7,6 @@ N=N
 
 alreadyOnBranch=Already on ''{0}''
 alreadyUpToDate=Already up-to-date.
-archiveFormatAlreadyRegistered=Archive format already registered: {0}
-archiveFormatAlreadyAbsent=Archive format already absent: {0}
 authorInfo=Author: {0} <{1}>
 averageMSPerRead=average {0} ms/read
 branchAlreadyExists=A branch named ''{0}'' already exists.
@@ -48,7 +46,6 @@ deletedRemoteBranch=Deleted remote branch {0}
 doesNotExist={0} does not exist
 dontOverwriteLocalChanges=error: Your local changes to the following file would be overwritten by merge:
 everythingUpToDate=Everything up-to-date
-exceptionCaughtDuringExecutionOfArchiveCommand=Exception caught during execution of archive command
 expectedNumberOfbytes=Expected {0} bytes.
 exporting=Exporting {0}
 failedToCommitIndex=failed to commit index
@@ -175,7 +172,6 @@ tooManyRefsGiven=Too many refs given
 unknownIoErrorStdout=An unknown I/O error occurred on standard output
 unknownMergeStrategy=unknown merge strategy {0} specified
 unmergedPaths=Unmerged paths:
-unsupportedArchiveFormat=Unknown archive format ''{0}''
 unsupportedOperation=Unsupported operation: {0}
 untrackedFiles=Untracked files:
 updating=Updating {0}..{1}
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Archive.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Archive.java
index 06f6f40f9c..0513fb2e24 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Archive.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Archive.java
@@ -43,12 +43,13 @@
 
 package org.eclipse.jgit.pgm;
 
+import org.eclipse.jgit.api.ArchiveCommand;
+import org.eclipse.jgit.api.Git;
 import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.archive.TarFormat;
+import org.eclipse.jgit.archive.ZipFormat;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.pgm.TextBuiltin;
-import org.eclipse.jgit.pgm.archive.ArchiveCommand;
-import org.eclipse.jgit.pgm.archive.TarFormat;
-import org.eclipse.jgit.pgm.archive.ZipFormat;
 import org.eclipse.jgit.pgm.internal.CLIText;
 import org.kohsuke.args4j.Argument;
 import org.kohsuke.args4j.Option;
@@ -71,7 +72,7 @@ class Archive extends TextBuiltin {
 		if (tree == null)
 			throw die(CLIText.get().treeIsRequired);
 
-		final ArchiveCommand cmd = new ArchiveCommand(db);
+		final ArchiveCommand cmd = new Git(db).archive();
 		try {
 			cmd.setTree(tree)
 					.setFormat(format)
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/CLIText.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/CLIText.java
index b5580bf34f..a8bf3d8cc3 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/CLIText.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/CLIText.java
@@ -76,8 +76,6 @@ public class CLIText extends TranslationBundle {
 	// @formatter:off
 	/***/ public String alreadyOnBranch;
 	/***/ public String alreadyUpToDate;
-	/***/ public String archiveFormatAlreadyRegistered;
-	/***/ public String archiveFormatAlreadyAbsent;
 	/***/ public String authorInfo;
 	/***/ public String averageMSPerRead;
 	/***/ public String branchAlreadyExists;
@@ -117,7 +115,6 @@ public class CLIText extends TranslationBundle {
 	/***/ public String doesNotExist;
 	/***/ public String dontOverwriteLocalChanges;
 	/***/ public String everythingUpToDate;
-	/***/ public String exceptionCaughtDuringExecutionOfArchiveCommand;
 	/***/ public String expectedNumberOfbytes;
 	/***/ public String exporting;
 	/***/ public String failedToCommitIndex;
@@ -238,7 +235,6 @@ public class CLIText extends TranslationBundle {
 	/***/ public char[] unknownIoErrorStdout;
 	/***/ public String unknownMergeStrategy;
 	/***/ public String unmergedPaths;
-	/***/ public String unsupportedArchiveFormat;
 	/***/ public String unsupportedOperation;
 	/***/ public String untrackedFiles;
 	/***/ public String updating;
diff --git a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
index 8b6211efbb..0920c43e8c 100644
--- a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
+++ b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
@@ -11,6 +11,8 @@ aNewObjectIdIsRequired=A NewObjectId is required.
 anExceptionOccurredWhileTryingToAddTheIdOfHEAD=An exception occurred while trying to add the Id of HEAD
 anSSHSessionHasBeenAlreadyCreated=An SSH session has been already created
 applyingCommit=Applying {0}
+archiveFormatAlreadyAbsent=Archive format already absent: {0}
+archiveFormatAlreadyRegistered=Archive format already registered: {0}
 atLeastOnePathIsRequired=At least one path is required.
 atLeastOnePatternIsRequired=At least one pattern is required.
 atLeastTwoFiltersNeeded=At least two filters needed.
@@ -182,6 +184,7 @@ errorOccurredDuringUnpackingOnTheRemoteEnd=error occurred during unpacking on th
 errorReadingInfoRefs=error reading info/refs
 errorSymlinksNotSupported=Symlinks are not supported with this OS/JRE
 exceptionCaughtDuringExecutionOfAddCommand=Exception caught during execution of add command
+exceptionCaughtDuringExecutionOfArchiveCommand=Exception caught during execution of archive command
 exceptionCaughtDuringExecutionOfCherryPickCommand=Exception caught during execution of cherry-pick command. {0}
 exceptionCaughtDuringExecutionOfCommitCommand=Exception caught during execution of commit command
 exceptionCaughtDuringExecutionOfFetchCommand=Exception caught during execution of fetch command
@@ -524,6 +527,7 @@ unmergedPaths=Repository contains unmerged paths
 unpackException=Exception while parsing pack stream
 unreadablePackIndex=Unreadable pack index: {0}
 unrecognizedRef=Unrecognized ref: {0}
+unsupportedArchiveFormat=Unknown archive format ''{0}''
 unsupportedCommand0=unsupported command 0
 unsupportedEncryptionAlgorithm=Unsupported encryption algorithm: {0}
 unsupportedEncryptionVersion=Unsupported encryption version: {0}
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/ArchiveCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/ArchiveCommand.java
index 5e572373fc..bbd9c8d826 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/archive/ArchiveCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/ArchiveCommand.java
@@ -40,7 +40,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-package org.eclipse.jgit.pgm.archive;
+package org.eclipse.jgit.api;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -53,13 +53,13 @@ import org.eclipse.jgit.api.Git;
 import org.eclipse.jgit.api.GitCommand;
 import org.eclipse.jgit.api.errors.GitAPIException;
 import org.eclipse.jgit.api.errors.JGitInternalException;
+import org.eclipse.jgit.internal.JGitText;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.MutableObjectId;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.ObjectLoader;
 import org.eclipse.jgit.lib.ObjectReader;
 import org.eclipse.jgit.lib.Repository;
-import org.eclipse.jgit.pgm.internal.CLIText;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.eclipse.jgit.treewalk.TreeWalk;
 
@@ -72,7 +72,7 @@ import org.eclipse.jgit.treewalk.TreeWalk;
  *
  * <pre>
  * ArchiveCommand.registerFormat("tar", new TarFormat());
- * cmd = new ArchiveCommand(git.getRepository());
+ * cmd = git.archive();
  * try {
  *	cmd.setTree(db.resolve(&quot;HEAD&quot;))
  *		.setOutputStream(out).call();
@@ -135,7 +135,7 @@ public class ArchiveCommand extends GitCommand<OutputStream> {
 		 * @param format the problematic format name
 		 */
 		public UnsupportedFormatException(String format) {
-			super(MessageFormat.format(CLIText.get().unsupportedArchiveFormat, format));
+			super(MessageFormat.format(JGitText.get().unsupportedArchiveFormat, format));
 			this.format = format;
 		}
 
@@ -170,7 +170,7 @@ public class ArchiveCommand extends GitCommand<OutputStream> {
 	public static void registerFormat(String name, Format<?> fmt) {
 		if (formats.putIfAbsent(name, fmt) != null)
 			throw new JGitInternalException(MessageFormat.format(
-					CLIText.get().archiveFormatAlreadyRegistered,
+					JGitText.get().archiveFormatAlreadyRegistered,
 					name));
 	}
 
@@ -185,7 +185,7 @@ public class ArchiveCommand extends GitCommand<OutputStream> {
 	public static void unregisterFormat(String name) {
 		if (formats.remove(name) == null)
 			throw new JGitInternalException(MessageFormat.format(
-					CLIText.get().archiveFormatAlreadyAbsent,
+					JGitText.get().archiveFormatAlreadyAbsent,
 					name));
 	}
 
@@ -245,7 +245,7 @@ public class ArchiveCommand extends GitCommand<OutputStream> {
 		} catch (IOException e) {
 			// TODO(jrn): Throw finer-grained errors.
 			throw new JGitInternalException(
-					CLIText.get().exceptionCaughtDuringExecutionOfArchiveCommand, e);
+					JGitText.get().exceptionCaughtDuringExecutionOfArchiveCommand, e);
 		}
 
 		return out;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/api/Git.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/Git.java
index 4b8378aead..31bf7660c2 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/api/Git.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/Git.java
@@ -403,6 +403,15 @@ public class Git {
 	}
 
 	/**
+	 * Returns a command to create an archive from a tree
+	 *
+	 * @return a {@link ArchiveCommand}
+	 */
+	public ArchiveCommand archive() {
+		return new ArchiveCommand(repo);
+	}
+
+	/**
 	 * Returns a command to add notes to an object
 	 *
 	 * @return a {@link AddNoteCommand}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
index 29bec97ee7..7280a38512 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
@@ -73,6 +73,8 @@ public class JGitText extends TranslationBundle {
 	/***/ public String anExceptionOccurredWhileTryingToAddTheIdOfHEAD;
 	/***/ public String anSSHSessionHasBeenAlreadyCreated;
 	/***/ public String applyingCommit;
+	/***/ public String archiveFormatAlreadyAbsent;
+	/***/ public String archiveFormatAlreadyRegistered;
 	/***/ public String atLeastOnePathIsRequired;
 	/***/ public String atLeastOnePatternIsRequired;
 	/***/ public String atLeastTwoFiltersNeeded;
@@ -244,6 +246,7 @@ public class JGitText extends TranslationBundle {
 	/***/ public String errorReadingInfoRefs;
 	/***/ public String errorSymlinksNotSupported;
 	/***/ public String exceptionCaughtDuringExecutionOfAddCommand;
+	/***/ public String exceptionCaughtDuringExecutionOfArchiveCommand;
 	/***/ public String exceptionCaughtDuringExecutionOfCherryPickCommand;
 	/***/ public String exceptionCaughtDuringExecutionOfCommitCommand;
 	/***/ public String exceptionCaughtDuringExecutionOfFetchCommand;
@@ -586,6 +589,7 @@ public class JGitText extends TranslationBundle {
 	/***/ public String unpackException;
 	/***/ public String unreadablePackIndex;
 	/***/ public String unrecognizedRef;
+	/***/ public String unsupportedArchiveFormat;
 	/***/ public String unsupportedCommand0;
 	/***/ public String unsupportedEncryptionAlgorithm;
 	/***/ public String unsupportedEncryptionVersion;
diff --git a/pom.xml b/pom.xml
index 76ba5c006c..5971dce64c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -506,6 +506,7 @@
   <modules>
     <module>org.eclipse.jgit</module>
     <module>org.eclipse.jgit.ant</module>
+    <module>org.eclipse.jgit.archive</module>
     <module>org.eclipse.jgit.ui</module>
     <module>org.eclipse.jgit.http.server</module>
     <module>org.eclipse.jgit.pgm</module>