more general module loading; do not use __dict__ directly
[mass-build.git] / mass_build.py
1 #!/usr/bin/python3
2 # mass-build - Easily Build Software Involving a Large Amount of Source Repositories
3 # Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
4 #
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
9 #
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 # GNU General Public License for more details.
14 #
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18
19 import vcs, build_system
20 import argparse, os, sys, subprocess
21 from collections import OrderedDict
22
23 # helper funcrions
24 def load_module(name, path, write_bytecode = False):
25         import importlib.machinery
26         old_val = sys.dont_write_bytecode
27         sys.dont_write_bytecode = not write_bytecode
28         module = importlib.machinery.SourceFileLoader(name, path).load_module()
29         sys.dont_write_bytecode = old_val
30         return module
31
32 # an entire Project
33 class Project:
34         def __init__(self, folder, config):
35                 self.folder = folder
36                 self.name = config['name']
37                 # VCS
38                 vcsName = config['vcs']
39                 if vcsName == 'git':
40                         self.vcs = vcs.Git(self.sourceFolder(), config)
41                 elif vcsName == 'svn':
42                         self.vcs = vcs.SVN(self.sourceFolder(), config['url'])
43                 else:
44                         raise Exception("Unknown VCS type "+vcsName)
45                 # build system
46                 if config.get('buildDeb', False):
47                         self.buildSystem = build_system.AutoDebuild(self.sourceFolder(), self.buildFolder(), config, self.vcs)
48                 else:
49                         buildSystemName = config['buildSystem']
50                         if buildSystemName == 'cmake':
51                                 self.buildSystem = build_system.CMake(self.sourceFolder(), self.buildFolder(), config)
52                         else:
53                                 raise Exception("Unknown build system type "+buildSystemName)
54         
55         def sourceFolder(self):
56                 return os.path.join(self.folder, self.name)
57         
58         def buildFolder(self):
59                 return os.path.join(config['buildDir'], self.sourceFolder())
60
61 # read command-line arguments
62 parser = argparse.ArgumentParser(description='Update and build a bunch of stuff')
63 parser.add_argument("-c", "--config",
64                     dest="config", default="mass-build.conf",
65                     help="mass-build config file")
66 parser.add_argument("--reconfigure",
67                     action="store_true", dest="reconfigure",
68                     help="Force configuration to be run")
69 parser.add_argument("-w", "--wait-after-config",
70                     action="store_true", dest="wait_after_config",
71                     help="Wait for user confirmation after configuration is finished")
72 parser.add_argument("--reset-source",
73                     action="store_true", dest="reset_source",
74                     help="Reset sourcecode to the given version (removes local changes!)")
75 parser.add_argument("--no-update",
76                     action="store_false", dest="update",
77                     help="Do not update projects before compilation")
78 parser.add_argument("--resume-from", metavar='PROJECT',
79                     dest="resume_from",
80                     help="From the projects specified, continue building with this one (i.e., remove all projects before this one from the list - this never adds new projects)")
81 parser.add_argument("--check-versions",
82                     action="store_true", dest="version_check",
83                     help="Check the repositories for newer tags, if possible (does not perform any building steps)")
84 parser.add_argument("projects",  metavar='PROJECT', nargs='*',
85                     help="Manually specify projects or folders to be built (project names take precedence)")
86 args = parser.parse_args()
87 if args.reset_source and not args.update:
88         raise Exception("Can not reset sources without doing an update")
89
90 # load config as dictionary
91 config = vars(load_module('config', args.config))
92
93 # initialise variables holding the configuration
94 allProjects = OrderedDict() # all projects
95 allFolders = {} # all folders
96 workProjects = [] # projects we work on
97
98 # copy all items which don't exist below, except for those in the exclude list
99 def inherit(subConfig, superConfig, exclude = ('name', 'projects')):
100         for name in superConfig.keys():
101                 if (not name in subConfig) and (not name in exclude):
102                         subConfig[name] = superConfig[name]
103
104 # populate list of projects, return list of projects in that folder
105 def loadProjects(config, folder=''):
106         folderProjects = []
107         for projectConfig in config['projects']:
108                 assert 'name' in projectConfig # everything must have a name
109                 inherit(projectConfig, config)
110                 if 'projects' in projectConfig: # a subpath
111                         folderProjects += loadProjects(projectConfig, os.path.join(folder, projectConfig['name']))
112                 else: # a proper project
113                         if projectConfig['name'] in allProjects:
114                                 raise Exception("Duplicate project name "+projectConfig['name'])
115                         project = Project(folder, projectConfig)
116                         allProjects[projectConfig['name']] = project
117                         folderProjects.append(project)
118         # store projects of this folder
119         if folder in allFolders:
120                 raise Exception("Duplicate folder name "+folder)
121         allFolders[folder] = folderProjects
122         return folderProjects
123
124 # load available projects
125 loadProjects(config)
126 # get base set og projects to process
127 if args.projects:
128         for name in args.projects:
129                 if name in allProjects:
130                         workProjects.append(allProjects[name])
131                 elif name in allFolders:
132                         workProjects += allFolders[name]
133                 else:
134                         raise Exception("Project or folder %s does not exist" % name)
135 else:
136         workProjects = list(allProjects.values()) # all the projects
137 # apply the "resume from"
138 if args.resume_from is not None:
139         # find project index
140         startIndex = 0
141         while startIndex < len(workProjects):
142                 if workProjects[startIndex].name == args.resume_from:
143                         break # we found it
144                 else:
145                         startIndex += 1
146         if startIndex >= len(workProjects): # project not found
147                 raise Exception("%s not found in list of projects to work on" % args.resume_from)
148         # start here
149         workProjects = workProjects[startIndex:]
150
151 # and do it!
152 for project in workProjects:
153         try:
154                 if args.version_check:
155                         print("Checking project",project.sourceFolder())
156                         project.vcs.checkVersions()
157                 else:
158                         if args.update:
159                                 print("Updating project",project.sourceFolder())
160                                 project.vcs.update(mode = vcs.MODE_RESET if args.reset_source else vcs.MODE_REBASE)
161                         print("Building project",project.sourceFolder())
162                         project.buildSystem.build(reconfigure=args.reconfigure, waitAfterConfig=args.wait_after_config)
163                 print()
164         except (subprocess.CalledProcessError, KeyboardInterrupt) as e: # for some exceptions, a stackrace is usually pointless
165                 print(file=sys.stderr)
166                 print(file=sys.stderr)
167                 if isinstance(e, KeyboardInterrupt): # str(e) would be the empty string
168                         print("Interruped by user while processing %s" % (project.name), file=sys.stderr)
169                 else:
170                         print("Error while processing %s: %s" % (project.name, str(e)), file=sys.stderr)
171                 print(file=sys.stderr)
172                 sys.exit(1)
173 print("All operations successfully completed")