Merge pull request #25 from gcsolaroli/master

Initial integration of /beta and /gamma with a single backend

8 files changed, 304 insertions, 166 deletions

diff --git a/scripts/builder/backendBuilder.py b/scripts/builder/backendBuilder.py
index 16dbe2f..5ecdda0 100644
--- a/scripts/builder/backendBuilder.py
+++ b/scripts/builder/backendBuilder.py
@@ -5,6 +5,10 @@ import sys, os, json
 import shutil
-import main
 import hashlib
 
-class BackendBuilder:
+import main
+
+#===================================================================
+
+
+class BackendBuilder(object):
         
@@ -15,2 +19,4 @@ class BackendBuilder:
                 self.settings = settings
+
+        # --------------------------------------------------------------------------
         
@@ -18,2 +24,3 @@ class BackendBuilder:
                 raise NotImplementedError()
+
         
@@ -21,30 +28,35 @@ class BackendBuilder:
                 raise NotImplementedError()
+
         
         def compileCode (self):
-                pass
+                raise NotImplementedError()
+
         
-        def copyCompiledCodeToTargetDir (self):
-                src = self.sourceFolder()
-                dst = self.targetFolder()
-                main.createFolder(os.path.dirname(dst))
-                shutil.copytree(src, dst)
+        def createPackage (self):
+                raise NotImplementedError()
+
+        # --------------------------------------------------------------------------
 
         def sourceFolder (self):
-                return main.projectBaseDir() + '/backend/' + self.relativePath() + '/src'
-        
+                return os.path.join(main.projectBaseDir() , 'backend', self.relativePath(), 'src')
 
-        def targetFolder (self):
-                return self.projectTargetDir + self.relativePath()
-        
-        def createTargetFolder (self):
-                main.createFolder(self.targetFolder())
-        
 
-        #def copyFrontendResources (self, frontend):
-        #       print "copying resources for frontend: " + frontend
-        #       print "SETTINGS: " + str(self.settings)
-        
+        def tempFolder (self):
+                return os.path.join(self.projectTargetDir, '.tmp', self.relativePath())
+                
+
+        def frontEndTempFolder (self):
+                return self.tempFolder()
+
 
-        def writeToTargetFolder (self, filename, content):
-                file = open(self.targetFolder() + '/' + filename, 'w')
+        def developmentTargetFolder (self):
+                return os.path.join(self.projectTargetDir, 'development', self.relativePath())
+
+        def targetFolder (self):
+                return os.path.join(self.projectTargetDir, self.relativePath())
+                
+        # --------------------------------------------------------------------------
+        
+        def writeToFolder (self, folder, filename, content):
+                file = open(os.path.join(folder, filename), 'w')
                 file.write(content.encode('utf-8'))
@@ -53,5 +65,5 @@ class BackendBuilder:
 
-        def configureIndexContent (self, indexContent):
+        def configureIndexContent (self, indexContent, requestPathPrefix = ".."):
                 result = indexContent
-                result = result.replace( '@request.path@',    self.settings['request.path']    )
+                result = result.replace( '@request.path@',    requestPathPrefix + '/' + self.settings['request.path']    )
                 result = result.replace( '@should.pay.toll@', self.settings['should.pay.toll'] )
@@ -70,2 +82,5 @@ class BackendBuilder:
         
+        def shouldCompileCode (self):
+                return ('debug' in self.versions) or ('install' in self.versions)
+
 
@@ -74,16 +89,30 @@ class BackendBuilder:
 
-                self.compileCode()
-                self.copyCompiledCodeToTargetDir()
+                if self.shouldCompileCode():
+                        self.compileCode()
                 
-                for frontend in self.frontends:
-                        frontendPath = frontend.module + '/'
-                        if 'debug' in self.versions:
-                                frontend.copyResourcesToTargetFolder(self.targetFolder())
-                                #self.writeToTargetFolder(frontendPath + 'index_debug.html', self.configureIndexContent(frontend.assembleDebugVersion()))
-                                self.writeToTargetFolder(frontendPath + 'index_debug.html', self.configureIndexContent(frontend.assemble(assemblyMode='DEBUG', versionType='DEBUG')))
+                        for frontend in self.frontends:
+                                main.createFolder(os.path.join(self.frontEndTempFolder(), frontend.module))
+
+                                if 'debug' in self.versions:
+                                        frontend.copyResourcesToFolder(self.frontEndTempFolder())
+
+                                        index = self.configureIndexContent(frontend.assemble(assemblyMode='DEBUG', versionType='DEBUG'))
+                                        self.writeToFolder(self.frontEndTempFolder(), os.path.join(frontend.module, 'index_debug.html'), index)
+                                
+                                if 'install' in self.versions:
+                                        index = self.configureIndexContent(frontend.assemble())
+                                        self.writeToFolder(self.frontEndTempFolder(), os.path.join(frontend.module, 'index.html'), index)
+
+                                        self.logChecksums(index, "[" + self.name() + " - " + frontend.module + "] index.html checksum")
                         
-                        if 'install' in self.versions:
-                                index = self.configureIndexContent(frontend.assemble())
-                                self.writeToTargetFolder(frontendPath + 'index.html', index)
-                                self.logChecksums(index, "[" + self.name() + " - " + frontend.module + "] index.html checksum")
+                        self.createPackage()
+
+                if 'development' in self.versions:
+                        for frontend in self.frontends:
+                                main.createFolder(os.path.join(self.developmentTargetFolder(), frontend.module))
+
+                                index = self.configureIndexContent(frontend.assemble(assemblyMode='DEVELOPMENT', versionType='DEBUG'), self.settings['development.settings']['url'])
+                                self.writeToFolder(self.developmentTargetFolder(), os.path.join(frontend.module, 'index_development.html'), index)
+
         
+#===================================================================
diff --git a/scripts/builder/phpBuilder.py b/scripts/builder/backends/phpBuilder.py
index cb4661d..c928aa0 100644
--- a/scripts/builder/phpBuilder.py
+++ b/scripts/builder/backends/phpBuilder.py
@@ -3,5 +3,5 @@
 
-from backendBuilder import BackendBuilder
+from scriptLanguageBuilder import ScriptLanguageBuilder
 
-class PhpBuilder(BackendBuilder):
+class PhpBuilder(ScriptLanguageBuilder):
         
@@ -9,2 +9,3 @@ class PhpBuilder(BackendBuilder):
                 return "PHP builder"
+
         
@@ -12,3 +13 @@ class PhpBuilder(BackendBuilder):
                 return 'php'
-        
-
diff --git a/scripts/builder/backends/pythonBuilder.py b/scripts/builder/backends/pythonBuilder.py
new file mode 100644
index 0000000..1e44209
--- a/dev/null
+++ b/scripts/builder/backends/pythonBuilder.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+
+from scriptLanguageBuilder import ScriptLanguageBuilder
+
+class PythonBuilder(ScriptLanguageBuilder):
+        
+        def name(self):
+                return "Python builder"
+
+        
+        def relativePath(self):
+                return 'python'
+
+
+        def compileCode (self):
+                src = self.sourceFolder()
+                dst = self.targetFolder()
+
+                shutil.copytree(src, dst)
+
+
+        #def copyCompiledCodeToTargetDir (self):
+        #       src = self.sourceFolder()
+        #       dst = self.targetFolder()
+#
+        #       shutil.copytree(src, dst)
diff --git a/scripts/builder/backends/scriptLanguageBuilder.py b/scripts/builder/backends/scriptLanguageBuilder.py
new file mode 100644
index 0000000..7d5b31c
--- a/dev/null
+++ b/scripts/builder/backends/scriptLanguageBuilder.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+
+import shutil
+from backendBuilder import BackendBuilder
+
+class ScriptLanguageBuilder(BackendBuilder):
+
+        def compileCode (self):
+                src = self.sourceFolder()
+                dst = self.tempFolder()
+
+                shutil.copytree(src, dst)
+
+
+        def createPackage (self):
+                src = self.tempFolder()
+                dst = self.targetFolder()
+
+                shutil.copytree(src, dst)
diff --git a/scripts/builder/frontendBuilder.py b/scripts/builder/frontendBuilder.py
index 55054ee..dae837b 100644
--- a/scripts/builder/frontendBuilder.py
+++ b/scripts/builder/frontendBuilder.py
@@ -11,13 +11,7 @@ import urllib
 
-#from mercurial import ui, hg
-#from mercurial.node import hex
-from dulwich.repo import Repo
-
 import main
 
+class FrontendBuilder(object):
 
-
-class FrontendBuilder:
-
-        def __init__ (self, frontend, settings):
+        def __init__ (self, frontend, settings, repositoryVersion):
                 if '.' in frontend:
@@ -32,2 +26,4 @@ class FrontendBuilder:
                 self.projectDir = main.projectBaseDir()
+                # self.repository = repository.repositoryWithPath(self.projectDir)
+                self.repositoryVersion = repositoryVersion
                 self.processedFiles = {}
@@ -35,36 +31,2 @@ class FrontendBuilder:
 
-        def mercurialRepositoryVersion (self):
-                repo = hg.repository(ui.ui(), self.projectDir)
-                context = repo['tip']
-                result = str(context)
-                
-                return result
-        
-
-        def gitRepositoryVersion (self):
-                repo = Repo(self.projectDir)
-                #if repo.is_dirty():
-                        #print "WARNING: build run with dirty repository"
-                result = repo.refs['HEAD']
-                
-                return result
-        
-
-                
-        def repositoryVersion (self): 
-                cacheKey = 'repositoryVersion'
-                if not self.processedFiles.has_key(cacheKey):
-                        #result = self.mercurialRepositoryVersion()
-                        result = self.gitRepositoryVersion()
-                        self.processedFiles[cacheKey] = result
-                else:
-                        result = self.processedFiles[cacheKey]
-                
-                return result
-        
-
-        #def relativePath (self):
-                #return self.module
-        #
-
         def log (self, message):
@@ -73,4 +35,8 @@ class FrontendBuilder:
 
-        def absolutePathForSourceFile (self, folder, basePath, file):
-                return folder + '/frontend/' + self.module + '/' + basePath + '/' + file
+        def absolutePathForSources (self):
+                return os.path.join(self.projectDir, 'frontend', self.module)
+
+        
+        def absolutePathForSourceFile (self, basePath, file):
+                return os.path.join(self.absolutePathForSources(), basePath, file)
         
@@ -78,3 +44,4 @@ class FrontendBuilder:
         def absolutePathForTargetFile (self, folder, basePath, file):
-                return folder + '/' + self.module + '/' + basePath + '/' + file
+                return os.path.join(folder, self.module, basePath, file)
+
 
@@ -94,3 +61,3 @@ class FrontendBuilder:
                 for file in self.filterFiles(self.settings[fileType]):
-                        src = self.absolutePathForSourceFile(sourceFolder,      fileType, file)
+                        src = self.absolutePathForSourceFile(fileType, file)
                         dst = self.absolutePathForTargetFile(destinationFolder, fileType, file)
@@ -100,3 +67,3 @@ class FrontendBuilder:
 
-        def copyResourcesToTargetFolder (self, targetFolder):
+        def copyResourcesToFolder (self, targetFolder):
                 self.copyResources(self.projectDir, targetFolder, 'css')
@@ -110,3 +77,3 @@ class FrontendBuilder:
                         try:
-                                fileHandler = codecs.open(self.absolutePathForSourceFile(self.projectDir, basePath, file), 'r', 'utf-8')
+                                fileHandler = codecs.open(self.absolutePathForSourceFile(basePath, file), 'r', 'utf-8')
                         except:
@@ -183,4 +150,4 @@ class FrontendBuilder:
 
-        def compressJS_jsmin (self, js):
-                self.log("compressing JS code")
+        def compressJS_jsmin (self, js, description):
+                self.log("compressing " + description + " code")
                 original = StringIO.StringIO(js)
@@ -198,3 +165,3 @@ class FrontendBuilder:
 
-        def compressJS_closureCompiler (self, js):
+        def compressJS_closureCompiler (self, js, description):
                         #Googles Closure compiler
@@ -207,5 +174,5 @@ class FrontendBuilder:
 
-        def compressJS (self, js):
-                return self.compressJS_jsmin(js)
-                #return self.compressJS_closureCompiler(js)
+        def compressJS (self, js, description):
+                return self.compressJS_jsmin(js, description)
+                #return self.compressJS_closureCompiler(js, description)
         
@@ -214,3 +181,3 @@ class FrontendBuilder:
 
-        def packBookmarklet (self, bookmakeletCode):
+        def packBookmarklet (self, bookmakeletCode, version):
                 replacers = [
@@ -229,3 +196,3 @@ class FrontendBuilder:
                 ]
-                result = self.compressJS(bookmakeletCode)
+                result = self.compressJS(bookmakeletCode, version + " bookmarklet")
                 
@@ -302,3 +269,3 @@ class FrontendBuilder:
                 if not self.processedFiles.has_key(cacheKey):
-                        result = 'bookmarklet="' + self.packBookmarklet(self.loadFilesContent('js', ['Bookmarklet.js'])) + '";bookmarklet_ie="' + self.packBookmarklet(self.loadFilesContent('js', ['Bookmarklet_IE.js'])) + '";'
+                        result = 'bookmarklet="' + self.packBookmarklet(self.loadFilesContent('js', ['Bookmarklet.js']), "regular") + '";bookmarklet_ie="' + self.packBookmarklet(self.loadFilesContent('js', ['Bookmarklet_IE.js']), "IE") + '";'
                         self.processedFiles[cacheKey] = result
@@ -310,3 +277,3 @@ class FrontendBuilder:
 
-        def replaceTemplatePlaceholders (self, assemblyMode, pageTitle, copyright, css, code, version, versionType):
+        def replaceTemplatePlaceholders (self, pageTitle, copyright, css, code, jsLoadMode, version, versionType):
                 result = self.template()
@@ -319,3 +286,3 @@ class FrontendBuilder:
                         result = result.replace('@application.version.type@',   versionType,1)
-                        result = result.replace('@js_' + assemblyMode + '@',    code,           1)
+                        result = result.replace('@js_' + jsLoadMode + '@',              code,           1)
 
@@ -345,3 +312,3 @@ class FrontendBuilder:
                 #<link rel="stylesheet" type="text/css" href="./css/reset-min.css" />
-                return '\n'.join(map(lambda file: '<link rel="stylesheet" type="text/css" href="./' + basePath + '/' + file + '" />', files))
+                return '\n'.join(map(lambda file: '<link rel="stylesheet" type="text/css" href="' + basePath + '/' + file + '" />', files))
         
@@ -354,3 +321,3 @@ class FrontendBuilder:
                 #<script type='text/javascript' src='./js/src/bookmarklet.js'></script>
-                return '\n'.join(map(lambda file: '<script type="text/javascript" src="./' + basePath + '/' + file + '"></script>', files))
+                return '\n'.join(map(lambda file: '<script type="text/javascript" src="' + basePath + '/' + file + '"></script>', files))
         
@@ -361,6 +328,6 @@ class FrontendBuilder:
 
-        def assembleVersion (self, assemblyMode, pageTitle, copyright, css, js, version, versionType):
+        def assembleVersion (self, pageTitle, copyright, css, js, jsLoadMode, version, versionType):
                 cacheKey = version + "-" + versionType
                 if not self.processedFiles.has_key(cacheKey):
-                        result = self.replaceTemplatePlaceholders(assemblyMode, pageTitle, copyright, css, js, version, versionType)
+                        result = self.replaceTemplatePlaceholders(pageTitle, copyright, css, js, jsLoadMode, version, versionType)
                         self.processedFiles[cacheKey] = result
@@ -374,20 +341,44 @@ class FrontendBuilder:
         def assemble (self, assemblyMode='INSTALL', versionType='LIVE'):
-                pageTitle = "Clipperz - " + self.module
-                if versionType != 'LIVE':
-                        pageTitle += " [" + versionType + " - " + assemblyMode +"]"
-                
+
+                if versionType == 'LIVE':
+                        pageTitle = "Clipperz - " + self.module
+                else:
+                        pageTitle = "Clipperz - " + self.module + " [" + versionType + " - " + assemblyMode +"]"
+
                 if assemblyMode == 'INSTALL':
-                                css= self.cssTagForContent(self.compressCSS(self.loadFilesContent('css', self.settings['css'])))
-                                js= self.scriptTagForContent(self.bookmarklet() + '\n' + self.compressJS(self.loadFilesContent('js', self.settings['js'])))
+                        copyright = self.assembleCopyrightHeader()
+                                css     =self.cssTagForContent(self.compressCSS(self.loadFilesContent('css', self.settings['css'])))
+                                js      =self.scriptTagForContent(
+                                                self.bookmarklet() +
+                                                '\n' +
+                                                self.compressJS(self.loadFilesContent('js', self.settings['js']), "application")
+                                        )
+                        jsLoadMode = 'EMBEDDED'
+
+                elif assemblyMode == 'DEBUG':
+                        copyright = self.assembleCopyrightHeader()
+                                css     =self.cssTagsForFiles('./css', self.filterFiles(self.settings['css']))
+                                js      =self.scriptTagForContent(self.bookmarklet()) + \
+                                         '\n' + \
+                                        self.scriptTagsForFiles('./js', self.filterFiles(self.settings['js']))
+                        jsLoadMode = 'LINKED'
+
+                elif assemblyMode == 'DEVELOPMENT':
+                        copyright = ""
+                                css     =self.cssTagsForFiles('file://' + str(os.path.join(self.absolutePathForSources(), 'css')), self.filterFiles(self.settings['css']))
+                                js      =self.scriptTagForContent(self.bookmarklet()) + \
+                                         '\n' + \
+                                        self.scriptTagsForFiles('file://' + str(os.path.join(self.absolutePathForSources(), 'js')), self.filterFiles(self.settings['js']))
+                        jsLoadMode = 'LINKED'
+
                 else:
-                                css= self.cssTagsForFiles('css', self.filterFiles(self.settings['css']))
-                                js= self.scriptTagForContent(self.bookmarklet()) + '\n' + self.scriptTagsForFiles('js', self.filterFiles(self.settings['js']))
-                
+                        raise NotImplementedError()
+
                 return self.assembleVersion(
-                                assemblyMode= assemblyMode,
                                 pageTitle       = pageTitle,
-                                copyright       = self.assembleCopyrightHeader(),
+                                copyright       = copyright,
                                 css                     = css,
                                 js                      = js,
-                                version                 = self.repositoryVersion(),
+                                jsLoadMode      = jsLoadMode,
+                                version                 = self.repositoryVersion,
                                 versionType     = versionType
diff --git a/scripts/builder/main.py b/scripts/builder/main.py
index 94f738f..6fce65d 100755
--- a/scripts/builder/main.py
+++ b/scripts/builder/main.py
@@ -3,12 +3,13 @@
 
-import sys, os, json
+import sys
+import os
+import json
 import shutil
 import pprint
-import frontendBuilder
 import codecs
 import itertools
-
 from collections   import deque
-from phpBuilder    import PhpBuilder
-from pythonBuilder import PythonBuilder
+
+import frontendBuilder
+import repository
 
@@ -36,3 +37,3 @@ def createFolder (path):
 def loadSettings (component, module):
-        print "MODULE: " + module
+        # print "MODULE: " + module
 
@@ -45,3 +46,4 @@ def loadSettings (component, module):
 
-        settings = codecs.open(projectBaseDir() + '/' + component + '/' + module + '/properties/' + submodule + '.properties.json', 'r', 'utf-8')
+        #settings = codecs.open(projectBaseDir() + os.sep + component + os.sep + module + os.sep + 'properties' + os.sep + submodule + '.properties.json', 'r', 'utf-8')
+        settings = codecs.open(os.path.join(projectBaseDir(), component, module, 'properties', submodule + '.properties.json'), 'r', 'utf-8')
         result = json.load(settings)
@@ -73,11 +75,9 @@ def assembleBackend (backend, frontends, versions):
         
-        if backend == 'php':
-                backendBuilder = PhpBuilder(projectTargetDir(), frontends, versions, settings)
-        elif backend == 'python':
-                backendBuilder = PythonBuilder(projectTargetDir(), frontends, versions, settings)
-        #elif backend == 'java':
-                #buildJavaBackend (frontends, versions, settings)
-        else:
-                raise Exception('unrecognized backend: ' + backend)
-                
+        builderModuleName = backend + 'Builder'
+        builderClassName  = backend.capitalize() + 'Builder'
+
+        builderModule  = __import__(builderModuleName)
+        builderClass   = getattr(builderModule, builderClassName)
+        
+        backendBuilder = builderClass(projectTargetDir(), frontends, versions, settings)
                 backendBuilder.run()
@@ -86,7 +86,10 @@ def assembleBackend (backend, frontends, versions):
 
-def build (settings):
+def build (settings, repository):
         frontends = []
         
+        if repository.areTherePendingChanges():
+                print "\nWARNING: repository has pending changes\n"
+
         for frontend in settings['frontends']:
-                frontends.append(frontendBuilder.FrontendBuilder(frontend, loadSettings('frontend', frontend)))
+                frontends.append(frontendBuilder.FrontendBuilder(frontend, loadSettings('frontend', frontend), repository.version()))
 
@@ -98,3 +101,3 @@ def build (settings):
 def clean ():
-        print "cleaning up …"
+        # print "cleaning up …"
         if os.path.exists(projectTargetDir()):
@@ -109,9 +112,9 @@ def usage (message):
         print
-        print "build.py clean"
-        print "build.py clean install"
-        print "build.py install --ALL"
-        print "build.py install debug --ALL"
-        print "build.py clean install debug --ALL"
-        print "build.ph install, debug --backends php java --frontends beta gamma"
-        print "build.ph install, debug --backends php java --frontends beta gamma gamma.mobile"
+        # print "build clean"
+        # print "build clean install"
+        print "build install --ALL"
+        print "build install debug --ALL"
+        # print "build clean install debug --ALL"
+        print "build install debug --backends php python --frontends beta gamma"
+        print "build install debug development --backends php python --frontends beta gamma gamma.mobile"
         exit(1)
@@ -120,2 +123,10 @@ def usage (message):
 
+def allFrontends ():
+        return ['beta', 'gamma',  'mobile']
+
+def allBackends ():
+        return ['php',  'python']
+
+#--------------------------------------------------------------------
+
 def main ():
@@ -123,10 +134,9 @@ def main ():
         parameters = list(itertools.islice(sys.argv, 1, None))
-        
-        shouldClean = len(filter(lambda x: x == 'clean', parameters)) > 0
-        if (shouldClean):
-                clean ()
-        
-        parameters = filter(lambda x: x != 'clean', parameters)
+
+        sys.path.append(os.path.join(scriptDir(), 'backends'))
+        currentRepository = repository.repositoryWithPath(projectBaseDir())
+
+        clean()
         versions = list(itertools.takewhile(lambda x: not x.startswith('--'), parameters))
-                settings['versions']  = versions;       #['debug',  'install']
+                settings['versions']  = versions;       #['debug', 'install', 'development']
         parameters = deque(itertools.dropwhile(lambda x: not x.startswith('--'), parameters))
@@ -136,4 +146,4 @@ def main ():
                 if parameter == "--ALL":
-                        settings['frontends'] = ['beta', 'gamma',  'mobile']
-                        settings['backends']  = ['php',  'python', 'java']
+                        settings['frontends'] = allFrontends()
+                        settings['backends']  = allBackends()
                 else:
@@ -160,4 +170,5 @@ def main ():
                 
-                build (settings)
-        
+                build(settings, currentRepository)
+        else:
+                usage("Suggestions on how to call the 'build' script:")
 
diff --git a/scripts/builder/pythonBuilder.py b/scripts/builder/pythonBuilder.py
deleted file mode 100644
index a84598d..0000000
--- a/scripts/builder/pythonBuilder.py
+++ b/dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: UTF-8 -*-
-
-from backendBuilder import BackendBuilder
-
-class PythonBuilder(BackendBuilder):
-        
-        def name(self):
-                return "Python builder"
-        
-        def relativePath(self):
-                return 'python'
-        
-
diff --git a/scripts/builder/repository.py b/scripts/builder/repository.py
new file mode 100644
index 0000000..89db9a5
--- a/dev/null
+++ b/scripts/builder/repository.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+# -*- coding: UTF-8 -*-
+
+
+def repositoryWithPath (path):
+        try:
+                from dulwich.repo import Repo
+
+                repo = Repo(path)
+                result = GitRepository(repo, path)
+        except:
+                from mercurial import ui, hg
+
+                repo = hg.repository(ui.ui(), path)
+                result = HgRepository(repo, path)
+
+        return result
+
+
+#===================================================================
+
+
+class Repository(object):
+
+        def __init__ (self, repository, path):
+                self.repository = repository
+                self.path = path
+
+
+        def revision (self):
+                raise NotImplementedError()
+        
+
+        def areTherePendingChanges (self):
+                raise NotImplementedError()
+
+
+        def version (self):
+                result = self.revision()
+                if self.areTherePendingChanges():
+                        result = '>>> ' + result + ' <<<'
+
+                # print "VERSION: " + result
+                return result
+
+
+#===================================================================
+
+
+class GitRepository(Repository):
+
+        def revision (self):
+                return repository.refs['HEAD']
+        
+
+        def areTherePendingChanges (self):
+                return repository.is_dirty()
+
+
+#===================================================================
+
+
+class HgRepository(Repository):
+                #http://mercurial.selenic.com/wiki/MercurialApi
+
+        def revision (self):
+                return 'hg:' + str(self.repository['tip'])
+        
+
+        def areTherePendingChanges (self):
+                # TODO: FIXME: repository.status() does not report 'unknown(?)' files. :(
+                return not all(map(lambda fileList: len(fileList) == 0, self.repository.status()))
+
+
+#===================================================================