Fixes setup compatibility issue on Windows

Fixes Bug #1052161

"python setup.py build" fails on Windows due to a hardcoded shell path:
/bin/sh

setup.py updated using openstack-common/update.py

Change-Id: I3943725a1f4b067a06f8f850e993c6867399a967

quantumclient/openstack/common/setup.py

@@ -31,12 +31,13 @@
 def parse_mailmap(mailmap='.mailmap'):
     mapping = {}
     if os.path.exists(mailmap):
-        fp = open(mailmap, 'r')
-        for l in fp:
-            l = l.strip()
-            if not l.startswith('#') and ' ' in l:
-                canonical_email, alias = l.split(' ')
-                mapping[alias] = canonical_email
+        with open(mailmap, 'r') as fp:
+            for l in fp:
+                l = l.strip()
+                if not l.startswith('#') and ' ' in l:
+                    canonical_email, alias = [x for x in l.split(' ')
+                                              if x.startswith('<')]
+                    mapping[alias] = canonical_email
     return mapping
 
 
@@ -51,10 +52,10 @@ def canonicalize_emails(changelog, mapping):
 
 # Get requirements from the first file that exists
 def get_reqs_from_files(requirements_files):
-    reqs_in = []
     for requirements_file in requirements_files:
         if os.path.exists(requirements_file):
-            return open(requirements_file, 'r').read().split('\n')
+            with open(requirements_file, 'r') as fil:
+                return fil.read().split('\n')
     return []
 
 
@@ -116,8 +117,12 @@ def write_requirements():
 
 
 def _run_shell_command(cmd):
-    output = subprocess.Popen(["/bin/sh", "-c", cmd],
-                              stdout=subprocess.PIPE)
+    if os.name == 'nt':
+        output = subprocess.Popen(["cmd.exe", "/C", cmd],
+                                  stdout=subprocess.PIPE)
+    else:
+        output = subprocess.Popen(["/bin/sh", "-c", cmd],
+                                  stdout=subprocess.PIPE)
     out = output.communicate()
     if len(out) == 0:
         return None
@@ -135,11 +140,19 @@ def _get_git_next_version_suffix(branch_name):
     _run_shell_command("git fetch origin +refs/meta/*:refs/remotes/meta/*")
     milestone_cmd = "git show meta/openstack/release:%s" % branch_name
     milestonever = _run_shell_command(milestone_cmd)
-    if not milestonever:
-        milestonever = ""
+    if milestonever:
+        first_half = "%s~%s" % (milestonever, datestamp)
+    else:
+        first_half = datestamp
+
     post_version = _get_git_post_version()
-    revno = post_version.split(".")[-1]
-    return "%s~%s.%s%s" % (milestonever, datestamp, revno_prefix, revno)
+    # post version should look like:
+    # 0.1.1.4.gcc9e28a
+    # where the bit after the last . is the short sha, and the bit between
+    # the last and second to last is the revno count
+    (revno, sha) = post_version.split(".")[-2:]
+    second_half = "%s%s.%s" % (revno_prefix, revno, sha)
+    return ".".join((first_half, second_half))
 
 
 def _get_git_current_tag():
@@ -161,39 +174,48 @@ def _get_git_post_version():
             cmd = "git --no-pager log --oneline"
             out = _run_shell_command(cmd)
             revno = len(out.split("\n"))
+            sha = _run_shell_command("git describe --always")
         else:
             tag_infos = tag_info.split("-")
             base_version = "-".join(tag_infos[:-2])
-            revno = tag_infos[-2]
-        return "%s.%s" % (base_version, revno)
+            (revno, sha) = tag_infos[-2:]
+        return "%s.%s.%s" % (base_version, revno, sha)
 
 
 def write_git_changelog():
     """Write a changelog based on the git changelog."""
-    if os.path.isdir('.git'):
-        git_log_cmd = 'git log --stat'
-        changelog = _run_shell_command(git_log_cmd)
-        mailmap = parse_mailmap()
-        with open("ChangeLog", "w") as changelog_file:
-            changelog_file.write(canonicalize_emails(changelog, mailmap))
+    new_changelog = 'ChangeLog'
+    if not os.getenv('SKIP_WRITE_GIT_CHANGELOG'):
+        if os.path.isdir('.git'):
+            git_log_cmd = 'git log --stat'
+            changelog = _run_shell_command(git_log_cmd)
+            mailmap = parse_mailmap()
+            with open(new_changelog, "w") as changelog_file:
+                changelog_file.write(canonicalize_emails(changelog, mailmap))
+    else:
+        open(new_changelog, 'w').close()
 
 
 def generate_authors():
     """Create AUTHORS file using git commits."""
-    jenkins_email = 'jenkins@review.openstack.org'
+    jenkins_email = 'jenkins@review.(openstack|stackforge).org'
     old_authors = 'AUTHORS.in'
     new_authors = 'AUTHORS'
-    if os.path.isdir('.git'):
-        # don't include jenkins email address in AUTHORS file
-        git_log_cmd = ("git log --format='%aN <%aE>' | sort -u | "
-                       "grep -v " + jenkins_email)
-        changelog = _run_shell_command(git_log_cmd)
-        mailmap = parse_mailmap()
-        with open(new_authors, 'w') as new_authors_fh:
-            new_authors_fh.write(canonicalize_emails(changelog, mailmap))
-            if os.path.exists(old_authors):
-                with open(old_authors, "r") as old_authors_fh:
-                    new_authors_fh.write('\n' + old_authors_fh.read())
+    if not os.getenv('SKIP_GENERATE_AUTHORS'):
+        if os.path.isdir('.git'):
+            # don't include jenkins email address in AUTHORS file
+            git_log_cmd = ("git log --format='%aN <%aE>' | sort -u | "
+                           "egrep -v '" + jenkins_email + "'")
+            changelog = _run_shell_command(git_log_cmd)
+            mailmap = parse_mailmap()
+            with open(new_authors, 'w') as new_authors_fh:
+                new_authors_fh.write(canonicalize_emails(changelog, mailmap))
+                if os.path.exists(old_authors):
+                    with open(old_authors, "r") as old_authors_fh:
+                        new_authors_fh.write('\n' + old_authors_fh.read())
+    else:
+        open(new_authors, 'w').close()
+
 
 _rst_template = """%(heading)s
 %(underline)s
@@ -207,7 +229,7 @@ def generate_authors():
 
 def read_versioninfo(project):
     """Read the versioninfo file. If it doesn't exist, we're in a github
-       zipball, and there's really know way to know what version we really
+       zipball, and there's really no way to know what version we really
        are, but that should be ok, because the utility of that should be
        just about nil if this code path is in use in the first place."""
     versioninfo_path = os.path.join(project, 'versioninfo')
@@ -221,7 +243,8 @@ def read_versioninfo(project):
 
 def write_versioninfo(project, version):
     """Write a simple file containing the version of the package."""
-    open(os.path.join(project, 'versioninfo'), 'w').write("%s\n" % version)
+    with open(os.path.join(project, 'versioninfo'), 'w') as fil:
+        fil.write("%s\n" % version)
 
 
 def get_cmdclass():
@@ -312,7 +335,8 @@ def get_git_branchname():
 
 
 def get_pre_version(projectname, base_version):
-    """Return a version which is based"""
+    """Return a version which is leading up to a version that will
+       be released in the future."""
     if os.path.isdir('.git'):
         current_tag = _get_git_current_tag()
         if current_tag is not None:
@@ -324,10 +348,10 @@ def get_pre_version(projectname, base_version):
             version_suffix = _get_git_next_version_suffix(branch_name)
             version = "%s~%s" % (base_version, version_suffix)
         write_versioninfo(projectname, version)
-        return version.split('~')[0]
+        return version
     else:
         version = read_versioninfo(projectname)
-    return version.split('~')[0]
+    return version
 
 
 def get_post_version(projectname):