Add m-esr52 at 52.6.0

1 files changed, 258 insertions, 0 deletions

diff --git a/python/mozbuild/mozpack/chrome/flags.py b/python/mozbuild/mozpack/chrome/flags.py
new file mode 100644
index 000000000..8c5c9a54c
--- /dev/null
+++ b/python/mozbuild/mozpack/chrome/flags.py
@@ -0,0 +1,258 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import absolute_import
+
+import re
+from distutils.version import LooseVersion
+from mozpack.errors import errors
+from collections import OrderedDict
+
+
+class Flag(object):
+    '''
+    Class for flags in manifest entries in the form:
+        "flag"   (same as "flag=true")
+        "flag=yes|true|1"
+        "flag=no|false|0"
+    '''
+    def __init__(self, name):
+        '''
+        Initialize a Flag with the given name.
+        '''
+        self.name = name
+        self.value = None
+
+    def add_definition(self, definition):
+        '''
+        Add a flag value definition. Replaces any previously set value.
+        '''
+        if definition == self.name:
+            self.value = True
+            return
+        assert(definition.startswith(self.name))
+        if definition[len(self.name)] != '=':
+            return errors.fatal('Malformed flag: %s' % definition)
+        value = definition[len(self.name) + 1:]
+        if value in ('yes', 'true', '1', 'no', 'false', '0'):
+            self.value = value
+        else:
+            return errors.fatal('Unknown value in: %s' % definition)
+
+    def matches(self, value):
+        '''
+        Return whether the flag value matches the given value. The values
+        are canonicalized for comparison.
+        '''
+        if value in ('yes', 'true', '1', True):
+            return self.value in ('yes', 'true', '1', True)
+        if value in ('no', 'false', '0', False):
+            return self.value in ('no', 'false', '0', False, None)
+        raise RuntimeError('Invalid value: %s' % value)
+
+    def __str__(self):
+        '''
+        Serialize the flag value in the same form given to the last
+        add_definition() call.
+        '''
+        if self.value is None:
+            return ''
+        if self.value is True:
+            return self.name
+        return '%s=%s' % (self.name, self.value)
+
+
+class StringFlag(object):
+    '''
+    Class for string flags in manifest entries in the form:
+        "flag=string"
+        "flag!=string"
+    '''
+    def __init__(self, name):
+        '''
+        Initialize a StringFlag with the given name.
+        '''
+        self.name = name
+        self.values = []
+
+    def add_definition(self, definition):
+        '''
+        Add a string flag definition.
+        '''
+        assert(definition.startswith(self.name))
+        value = definition[len(self.name):]
+        if value.startswith('='):
+            self.values.append(('==', value[1:]))
+        elif value.startswith('!='):
+            self.values.append(('!=', value[2:]))
+        else:
+            return errors.fatal('Malformed flag: %s' % definition)
+
+    def matches(self, value):
+        '''
+        Return whether one of the string flag definitions matches the given
+        value.
+        For example,
+            flag = StringFlag('foo')
+            flag.add_definition('foo!=bar')
+            flag.matches('bar') returns False
+            flag.matches('qux') returns True
+            flag = StringFlag('foo')
+            flag.add_definition('foo=bar')
+            flag.add_definition('foo=baz')
+            flag.matches('bar') returns True
+            flag.matches('baz') returns True
+            flag.matches('qux') returns False
+        '''
+        if not self.values:
+            return True
+        for comparison, val in self.values:
+            if eval('value %s val' % comparison):
+                return True
+        return False
+
+    def __str__(self):
+        '''
+        Serialize the flag definitions in the same form given to each
+        add_definition() call.
+        '''
+        res = []
+        for comparison, val in self.values:
+            if comparison == '==':
+                res.append('%s=%s' % (self.name, val))
+            else:
+                res.append('%s!=%s' % (self.name, val))
+        return ' '.join(res)
+
+
+class VersionFlag(object):
+    '''
+    Class for version flags in manifest entries in the form:
+        "flag=version"
+        "flag<=version"
+        "flag<version"
+        "flag>=version"
+        "flag>version"
+    '''
+    def __init__(self, name):
+        '''
+        Initialize a VersionFlag with the given name.
+        '''
+        self.name = name
+        self.values = []
+
+    def add_definition(self, definition):
+        '''
+        Add a version flag definition.
+        '''
+        assert(definition.startswith(self.name))
+        value = definition[len(self.name):]
+        if value.startswith('='):
+            self.values.append(('==', LooseVersion(value[1:])))
+        elif len(value) > 1 and value[0] in ['<', '>']:
+            if value[1] == '=':
+                if len(value) < 3:
+                    return errors.fatal('Malformed flag: %s' % definition)
+                self.values.append((value[0:2], LooseVersion(value[2:])))
+            else:
+                self.values.append((value[0], LooseVersion(value[1:])))
+        else:
+            return errors.fatal('Malformed flag: %s' % definition)
+
+    def matches(self, value):
+        '''
+        Return whether one of the version flag definitions matches the given
+        value.
+        For example,
+            flag = VersionFlag('foo')
+            flag.add_definition('foo>=1.0')
+            flag.matches('1.0') returns True
+            flag.matches('1.1') returns True
+            flag.matches('0.9') returns False
+            flag = VersionFlag('foo')
+            flag.add_definition('foo>=1.0')
+            flag.add_definition('foo<0.5')
+            flag.matches('0.4') returns True
+            flag.matches('1.0') returns True
+            flag.matches('0.6') returns False
+        '''
+        value = LooseVersion(value)
+        if not self.values:
+            return True
+        for comparison, val in self.values:
+            if eval('value %s val' % comparison):
+                return True
+        return False
+
+    def __str__(self):
+        '''
+        Serialize the flag definitions in the same form given to each
+        add_definition() call.
+        '''
+        res = []
+        for comparison, val in self.values:
+            if comparison == '==':
+                res.append('%s=%s' % (self.name, val))
+            else:
+                res.append('%s%s%s' % (self.name, comparison, val))
+        return ' '.join(res)
+
+
+class Flags(OrderedDict):
+    '''
+    Class to handle a set of flags definitions given on a single manifest
+    entry.
+    '''
+    FLAGS = {
+        'application': StringFlag,
+        'appversion': VersionFlag,
+        'platformversion': VersionFlag,
+        'contentaccessible': Flag,
+        'os': StringFlag,
+        'osversion': VersionFlag,
+        'abi': StringFlag,
+        'platform': Flag,
+        'xpcnativewrappers': Flag,
+        'tablet': Flag,
+        'process': StringFlag,
+    }
+    RE = re.compile(r'([!<>=]+)')
+
+    def __init__(self, *flags):
+        '''
+        Initialize a set of flags given in string form.
+           flags = Flags('contentaccessible=yes', 'appversion>=3.5')
+        '''
+        OrderedDict.__init__(self)
+        for f in flags:
+            name = self.RE.split(f)
+            name = name[0]
+            if not name in self.FLAGS:
+                errors.fatal('Unknown flag: %s' % name)
+                continue
+            if not name in self:
+                self[name] = self.FLAGS[name](name)
+            self[name].add_definition(f)
+
+    def __str__(self):
+        '''
+        Serialize the set of flags.
+        '''
+        return ' '.join(str(self[k]) for k in self)
+
+    def match(self, **filter):
+        '''
+        Return whether the set of flags match the set of given filters.
+            flags = Flags('contentaccessible=yes', 'appversion>=3.5',
+                          'application=foo')
+            flags.match(application='foo') returns True
+            flags.match(application='foo', appversion='3.5') returns True
+            flags.match(application='foo', appversion='3.0') returns False
+        '''
+        for name, value in filter.iteritems():
+            if not name in self:
+                continue
+            if not self[name].matches(value):
+                return False
+        return True