+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Annotations to gather metadata on `app.nit` projects
+module app_annotations
+
+private import parser_util
+import modelize
+import literal
+import semantize
+private import annotation
+
+# Metadata associated to an Android project
+class AppProject
+ # Name of the resulting application
+ var name: nullable String = null
+
+ # Namespace/package used to identify the application
+ var namespace: nullable String = null
+
+ # Version of the application
+ var version: nullable String = null
+
+ # Numerical version code of the application
+ var version_code: Int = 0
+
+ private var modelbuilder: ModelBuilder
+ private var mainmodule: MModule
+
+ init
+ do
+ var annot = modelbuilder.lookup_annotation_on_modules("app_name", mainmodule)
+ if annot != null then name = annot.arg_as_string(modelbuilder)
+
+ annot = modelbuilder.lookup_annotation_on_modules("app_version", mainmodule)
+ if annot != null then version = annot.as_version(modelbuilder)
+
+ annot = modelbuilder.lookup_annotation_on_modules("app_namespace", mainmodule)
+ if annot != null then namespace = annot.arg_as_string(modelbuilder)
+
+ # Get the date and time (down to the minute) as string
+ var local_time = new Tm.localtime
+ var local_time_s = local_time.strftime("%y%m%d%H%M")
+ version_code = local_time_s.to_i
+
+ modelbuilder.toolcontext.check_errors
+ end
+
+ redef fun to_s do return """
+name: {{{name or else "null"}}}
+namespace: {{{namespace or else "null"}}}
+version: {{{version or else "null"}}}"""
+end
+
+redef class AAnnotation
+ # Returns a version string (example: "1.5.6b42a7c") from an annotation `version(1, 5, git_revision)`.
+ #
+ # The user can enter as many fields as needed. The call to `git_revision` will be replaced by the short
+ # revision number. If the working tree is dirty, it will append another field with "d" for dirty.
+ private fun as_version(modelbuilder: ModelBuilder): String
+ do
+ var version_fields = new Array[Object]
+
+ var args = n_args
+ if args.length < 1 then
+ modelbuilder.error(self, "Annotation error: \"{name}\" expects at least a single argument.")
+ return ""
+ else
+ for arg in args do
+ var format_error = "Annotation error: \"{name}\" expects its arguments to be of type Int or a call to `git_revision`"
+
+ var value
+ value = arg.as_int
+ if value != null then
+ version_fields.add value
+ continue
+ end
+
+ value = arg.as_string
+ if value != null then
+ version_fields.add value
+ end
+
+ value = arg.as_id
+ if value == "git_revision" then
+ # Get Git short revision
+ var proc = new ProcessReader("git", "rev-parse", "--short", "HEAD")
+ proc.wait
+ assert proc.status == 0
+ var lines = proc.read_all
+ var revision = lines.split("\n").first
+
+ # Is it dirty?
+ # If not, the return of `git diff --shortstat` is an empty line
+ proc = new ProcessReader("git", "diff-index", "--quiet", "HEAD")
+ proc.wait
+ var dirty = proc.status != 0
+ if dirty then revision += ".d"
+
+ version_fields.add revision
+ continue
+ end
+
+ modelbuilder.error(self, format_error)
+ return ""
+ end
+ end
+
+ return version_fields.join(".")
+ end
+end