Source code for libka.git_checks

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# kate: space-indent on; indent-width 4; replace-tabs on; indent-mode python; remove-trailing-space modified;
# vim: expandtab ts=4

############################################################################
#   Copyright © 2016 José Manuel Santamaría Lema <panfaust@gmail.com>      #
#                                                                          #
#   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.                                    #
############################################################################

import sys
import os

from git import Repo

from debian.debian_support import Version

#FIXME: this code probably should be converted to a KAGitRepo class with methods
#       so we could do "git_repo = Repo('.')" in the constructor to avoid loading
#       the repository twice, see the ka-debian2kubuntu-merge script for instance

#Check if the current branch is a valid Kubuntu branch
#if executed with interactive=False retrurns the error message or '' on success


def kubuntuCheckValidBranch(distribution=None,interactive=True,master_accepted=True):
    try:
        git_repo = Repo('.')
    except:
        print("Git repo not found here, 'pwd': " + os.getcwd())
        sys.exit(1)
    branch_name = str(git_repo.active_branch)
    branch_name_parts = branch_name.split('_')
    warning = ''
    try:
        kubuntu = branch_name_parts[0]
        branch_dist = branch_name_parts[1]
        target = branch_name_parts[2]
        if kubuntu != "kubuntu":
            warning = "Current branch '%s' is not a Kubuntu branch" % branch_name
        #if target not in ["archive","backports","staging","stage","updates","debian-merge"]:
        #    warning += '\n'+ "Current branch '%s' is not an archive, updates or backports Kubuntu branch" % branch_name
        if (distribution != None) and (distribution != branch_dist):
            warning = '\n'+ "Current branch '%s' is not a valid branch for distribution '%s'" % (branch_name,distribution)
    except Exception:
        if master_accepted and (branch_name == "master"):
            warning = ""
        else:
            warning = "Couldn't find out distribution name for branch '%s'" % branch_name
    #Ask user for confirmation when executed with interactive=True, otherwise return the warning text
    if interactive:
        if warning != '':
            ui = input(warning + '\nContinue anyway y/N :') + ' '
            if ui.lower()[0] != 'y':
                sys.exit(1)
    else:
        return warning



#Check if the current branch has changes not pushed to git


def checkUnpushedGitChanges():
    try:
        git_repo = Repo('.')
    except:
        print("Git repo not found here, 'pwd': " + os.getcwd())
        sys.exit(1)
    unpushed_changes = False
    #Check that there are no modified files
    if git_repo.index.diff(None):
        unpushed_changes = True
    #Check that there are no changes in the index
    if git_repo.index.diff(git_repo.active_branch.commit):
        unpushed_changes = True
    #Check that the last commit from the current and origin branch are the same
    branch_name = str(git_repo.active_branch)
    try:
        origin_commit = git_repo.refs["origin/"+branch_name].commit
        current_commit = git_repo.active_branch.commit
        if origin_commit != current_commit:
            unpushed_changes = True
    except:
        unpushed_changes = True
    #If there are unpushed changes, abort
    if unpushed_changes:
        print("You have changes not pushed to git, aborting.")
        sys.exit(1)




def getMaxTag(prefix=''):
    try:
        git_repo = Repo('.')
    except:
        print("Git repo not found here, 'pwd': " + os.getcwd())
        sys.exit(1)
    max_version_tag = Version('0')
    for tag in git_repo.tags:
        tag = str(tag)
        if tag.startswith(prefix):
            #Remove prefix from the string
            tag = tag.split(prefix)[1]
            #Replace '%' in order to support epochs properly
            tag = tag.replace('%',':')
            #Build the version object and check if it's the max so far
            try:
                version = Version(tag)
            except ValueError:
                #skip if the tag name is not a valid package version
                continue
            if version > max_version_tag:
                max_version_tag = version
    return prefix + str(max_version_tag).replace(':','%')