Thread: [Plplot-cvs] SF.net SVN: plplot:[12407] trunk/cmake/build_projects/gtk_transform.py

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Revision: 12407
          http://sourceforge.net/p/plplot/code/12407
Author:   airwin
Date:     2013-07-09 06:03:41 +0000 (Tue, 09 Jul 2013)
Log Message:
-----------
Initial commit of script to parse jhbuild xml file produced by
gtk_xml_recursive_process.py (which combines included chain of jhbuild
xml files into one file).

Currently the principal function of the script, parse_jhbuild only
has the logic tested where if_dependencies is True (i.e., where dependencies
are being recursively followed), and that test on real jhbuild data showed
a circular dependency which lead to infinite depths in the recursion.

So some method of detecting circular dependencies and erroring out
must be implemented, and the logic for the alternative straight
printout of values without following the dependencies must be extended
a bit as well.

Added Paths:
-----------
    trunk/cmake/build_projects/gtk_transform.py

Added: trunk/cmake/build_projects/gtk_transform.py
===================================================================

--- trunk/cmake/build_projects/gtk_transform.py	                        (rev 0)
+++ trunk/cmake/build_projects/gtk_transform.py	2013-07-09 06:03:41 UTC (rev 12407)
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+
+# Read gtk jhbuild xml module that has been produced by
+# gtk_xml_recursive_process.py from stdin and transform it into data
+# required for build_projects using the ElementTree XML API.
+
+# Copyright (C) 2013 Alan W. Irwin
+
+# This file is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# This file 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
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with this file; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+import sys
+import xml.etree.ElementTree as ET
+
+def parse_jhbuild(root, id, if_dependencies):
+    # find all necessary data to build.  If xml is in slightly non-standard
+    # form or if there is any other trouble, then immediately return
+    # with no output to stdout.
+    print("id = %s" % id)
+    package = root.findall(".//*[@id='%s']" % id)
+    if len(package) < 1:
+        # Cannot find this package.  Do nothing.
+        return None
+    elif len(package) > 1:
+        raise RuntimeError, "non-unique id found for %s" % id
+    # From here on drop the reference to the first (and only) element
+    # of package for convenience.
+    package = package[0]
+
+    # From now only handle two build types and only a subset of
+    # attributes for both, and only look for
+    # branch and dependencies elements (of various kinds) below
+    # packages.
+    config_type = package.tag
+    if config_type == "autotools":
+        config_arguments =  package.get("autogenargs")
+    elif config_type == "cmake":
+        config_arguments =  package.get("cmakeargs")
+    else:
+        return None
+    
+    # Parse branch element of package
+    branch = package.findall("branch[@hash]")
+    if len(branch) < 1:
+        # Cannot find branch so do nothing.
+        return None
+    elif len(branch) > 1:
+        raise RuntimeError, "non-unique branch element found with hash attribute for %s" % id
+    
+    # From here on drop the reference to the first (and only) element
+    # of branch for convenience.
+    branch = branch[0]
+    
+    download_hash = branch.get("hash")
+    if len(download_hash) == 0:
+        return None
+    index = download_hash.index(":")
+    download_hash_type = download_hash[0:index].upper()
+    download_hash = download_hash[index+1:]
+    
+    download_repo = branch.get("repo")
+    if len(download_repo) == 0:
+        return None
+    
+    download_module = branch.get("module")
+    if len(download_module) == 0:
+        return None
+    
+    # Parse various kinds of jhbuild dependencies.
+    # Note from 
+    # http://stackoverflow.com/questions/9974957/what-is-the-after-element-used-for-in-jhbuild
+    # "dependencies are hard dependencies. Packages that are
+    # required to build a module.  suggests are soft
+    # dependencies. Packages might use them if they are installed
+    # (detected at build time) but if they are not present, they
+    # do not present a problem. These dependencies will be built,
+    # but they can be ignored without problems by using the
+    # argument --ignore-suggests. For instance, evolution can be
+    # built with or without nss support.  after are not strict
+    # dependencies, but they are needed at runtime to get some
+    # features. For instance, metacity is needed by mutter to have
+    # key binding settings in mutter."
+
+    # Create overall_dependencies dictionary and populate it as needed.
+    overall_dependencies={}
+    # Create dependencies dictionary and populate it as needed.
+    dependencies={}
+    # Add a dependency for pkg-config if there is a subelement named that.
+    if package.find("pkg-config") != None:
+        dependencies["pkg-config"] = None
+        overall_dependencies["pkg-config"] = None
+    for dep_element in package.findall("dependencies/dep"):
+        dependencies[dep_element.get("package")] = None
+        overall_dependencies[dep_element.get("package")] = None
+
+    # Create suggests dictionary and populate it as needed.
+    suggests={}
+    for dep_element in package.findall("suggests/dep"):
+        suggests[dep_element.get("package")] = None
+        overall_dependencies[dep_element.get("package")] = None
+    # Repeat for suggest target name (a mistake for one package
+    # with id=gdm).
+    for dep_element in package.findall("suggest/dep"):
+        suggests[dep_element.get("package")] = None
+        overall_dependencies[dep_element.get("package")] = None
+        
+    # Create after dictionary and populate it as needed.
+    after={}
+    for dep_element in package.findall("after/dep"):
+        after[dep_element.get("package")] = None
+        overall_dependencies[dep_element.get("package")] = None
+    
+    if not if_dependencies:
+        pass
+    else:
+        dependencies_list = overall_dependencies.keys()
+        bad_dependencies = {}
+        for dep in dependencies_list:
+            extra = parse_jhbuild(root, dep, True)
+            if extra == None:
+                bad_dependencies[dep] = None
+                del overall_dependencies[dep]
+            else:
+                overall_dependencies.update(extra[0]) 
+                bad_dependencies.update(extra[1]) 
+
+        return (overall_dependencies, bad_dependencies)
+
+tree = ET.parse(sys.stdin)
+root = tree.getroot()
+
+# Create repository dictionary.  Note, there is sometimes more than
+# one definition.  Eyeballing the file, it appears those definitions
+# are completely redundant so it is fine to take the last definition
+# (which we do here).
+repository_dict={}
+for repository in root.findall("repository"):
+    repository_dict[repository.get("name")] = repository.get("href")
+
+dependency_dictionary = parse_jhbuild(root, "pango", True)
+if not dependency_dictionary == None:
+    print("good dependencies =")
+    print(dependency_dictionary[0].keys())
+    print("bad dependencies =")
+    print(dependency_dictionary[1].keys())


Property changes on: trunk/cmake/build_projects/gtk_transform.py
___________________________________________________________________
Added: svn:executable
## -0,0 +1 ##
+*
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Added: svn:keywords
## -0,0 +1 ##
+Author Date Id Revision
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Added: svn:eol-style
## -0,0 +1 ##
+native
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Thread: [Plplot-cvs] SF.net SVN: plplot:[12407] trunk/cmake/build_projects/gtk_transform.py

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