X-Git-Url: https://git.ralfj.de/mass-build.git/blobdiff_plain/0847fb06e91eacd061980ca614957f2134692600..dc2032ac2419823fcf377fb7b1c07201fb899c68:/vcs.py

diff --git a/vcs.py b/vcs.py
index b2387c7..1494478 100644
--- a/vcs.py
+++ b/vcs.py
@@ -1,19 +1,56 @@
-import os, git, subprocess
+# mass-build - Easily Build Software Involving a Large Amount of Source Repositories
+# Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-'''A VCS must have an "update" method with an optional "force" parameter.'''
+import os, subprocess, re
+
+'''A VCS must have an "update" method with an optional "mode" parameter taking one of the three values below,
+   a "version" method returning a version name (or None),
+   and a "newVersions" method which checks for new versions and prints the result to standard output.'''
+MODE_FETCH = 0
+MODE_REBASE = 1
+MODE_RESET = 2
+
+def natural_sort_key(val):
+	return [ (int(c) if c.isdigit() else c) for c in re.split('([0-9]+)', val) ]
+
+def get_non_digit_prefix(val):
+	return re.match('[^0-9]*', val).group(0)
+
+class GitCommand:
+	def __getattr__(self, name):
+		def call(*args, suppress_stderr = False, split = True):
+			cmd = ["git", name.replace('_', '-')] + list(args)
+			with subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE if suppress_stderr else None) as p:
+				(stdout, stderr) = p.communicate()
+				if p.returncode != 0:
+					raise Exception("Running %s returned non-zero exit code %d" % (str(cmd), p.returncode))
+			stdout = stdout.decode('utf-8').strip('\n')
+			return stdout.split('\n') if split else stdout
+		return call
+git = GitCommand()
 
 # Fetch updates from git
 class Git:
-	def __init__(self, folder, url, commit):
+	def __init__(self, folder, config):
 		self.folder = os.path.abspath(folder)
-		self.url = url
-		self.commit = commit
-
-	class _ProgressPrinter(git.remote.RemoteProgress):
-		def update(self, op_code, cur_count, max_count=None, message=''):
-			print self._cur_line+(" "*30)+"\r",
+		self.url = config['url']
+		self.commit = config['version']
 
-	def update(self):
+	def update(self, mode = MODE_REBASE):
 		isBranch = (self.commit.startswith('origin/'))
 		if isBranch:
 			branchname = self.commit[len('origin/'):]
@@ -22,49 +59,70 @@ class Git:
 		# get us a git repository, and the "origin" remote
 		if os.path.exists(self.folder):
 			# load existing repo
-			repo = git.Repo(self.folder)
-			origin = repo.remotes.origin
+			os.chdir(self.folder)
+			git.remote("set-url", "origin", self.url) # make sure we use the current URL
 		else:
 			# create a new one
 			os.makedirs(self.folder)
-			repo = git.Repo.init(self.folder)
-			origin = repo.create_remote('origin', self.url)
-		origin.fetch(progress=Git._ProgressPrinter()) # download new data
-		print " "*80+"\r", # clean the line we are in
+			os.chdir(self.folder)
+			git.init()
+			git.remote("add", "origin", self.url)
+		git.fetch("origin")
+		if mode == MODE_FETCH:
+			return
 		# create/find correct branch
-		if branchname in repo.heads:
-			branch = repo.heads[branchname]
-		else:
-			branch = repo.create_head(branchname, self.commit)
-			if isBranch: # track remote branch
-				branch.set_tracking_branch(origin.refs[branchname])
+		if not git.branch("--list", branchname): # the branch does not yet exit
+			git.branch(branchname, self.commit)
+			if isBranch: # make sure we track the correct remote branch
+				git.branch("-u", self.commit, branchname)
 		# update it to the latest remote commit
-		branch.checkout()
-		repo.git.rebase(self.commit)
-		print "...done",
-		if repo.head.reference.commit != repo.commit(self.commit):
-			print "(keeping local patches around)",
-		print
+		git.checkout(branchname, suppress_stderr=True)
+		if mode == MODE_RESET:
+			git.reset("--hard", self.commit)
+		else:
+			git.rebase(self.commit)
+		# update submodules
+		git.submodule("update", "--init", "--recursive", "--rebase")
+		# done
+		print("...done", end=' ')
+		if git.rev_parse("HEAD", split=False) != git.rev_parse(self.commit, split=False):
+			print("(keeping local patches around)", end=' ')
+		print()
 
 	def version(self):
 		repo = git.Repo(self.folder)
 		v = repo.git.describe()
-		if v.startswith('v'): v = v[1:]
-		return v
+		return v[len(get_non_digit_prefix(v)):] # remove the non-digit prefix from v (so that it starts with a number)
+
+	def checkVersions(self):
+		self.update(mode = MODE_FETCH)
+		currentVersion = git.describe(split=False)
+		# get sorted list of tag names with the same non-digit prefix and higher version number
+		tags = git.tag()
+		tags = [t for t in tags if get_non_digit_prefix(t) == get_non_digit_prefix(currentVersion) and natural_sort_key(t) > natural_sort_key(currentVersion)]
+		if not tags: return
+		tags.sort(key = natural_sort_key)
+		print("Versions newer than "+currentVersion+" available:")
+		print(tags)
 
 # Fetch updates via SVN
 class SVN:
-	def __init__(self, folder, svnPath, versionName):
+	def __init__(self, folder, url):
 		self.folder = os.path.abspath(folder)
-		self.svnPath = svnPath
-		self.versionName = versionName
+		self.url = url
 
-	def update(self):
+	def update(self, mode = MODE_REBASE):
+		if mode == MODE_FETCH: raise Exception("Just fetching is not supported with SVN")
 		if os.path.exists(self.folder):
 			os.chdir(self.folder) # go into repository
-			subprocess.check_call(['svn', 'switch', self.svnPath]) # and update to the URL we got
+			if mode == MODE_RESET: subprocess.check_call(['svn', 'revert', '-R', '.'])
+			subprocess.check_call(['svn', 'switch', self.url]) # and update to the URL we got
 		else:
-			subprocess.check_call(['svn', 'co', self.svnPath, self.folder])# just download it
-
+			os.makedirs(self.folder) # if even the parent folder does not exist, svn fails
+			subprocess.check_call(['svn', 'co', self.url, self.folder]) # just download it
+	
 	def version(self):
-		return self.versionName
+		return None
+	
+	def checkVersions(self):
+		print("Version checking not supporting with SVN")