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author | Patrick Williams <patrick@stwcx.xyz> | 2015-09-15 22:41:29 +0300 |
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committer | Patrick Williams <patrick@stwcx.xyz> | 2015-09-15 22:41:29 +0300 |
commit | 21f9b84b4b729fbd7acbd465e7a3f726e4d20f91 (patch) | |
tree | eb2d091d427ca0813b445509d59cc8e27e8ad25f /yocto-poky/meta/lib/oe/types.py | |
parent | 101cef31e2bf54c678501155cd2106251acbd076 (diff) | |
parent | c124f4f2e04dca16a428a76c89677328bc7bf908 (diff) | |
download | openbmc-21f9b84b4b729fbd7acbd465e7a3f726e4d20f91.tar.xz |
Merge commit 'c124f4f2e04dca16a428a76c89677328bc7bf908' as 'yocto-poky'
Diffstat (limited to 'yocto-poky/meta/lib/oe/types.py')
-rw-r--r-- | yocto-poky/meta/lib/oe/types.py | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/yocto-poky/meta/lib/oe/types.py b/yocto-poky/meta/lib/oe/types.py new file mode 100644 index 000000000..7f47c17d0 --- /dev/null +++ b/yocto-poky/meta/lib/oe/types.py @@ -0,0 +1,153 @@ +import errno +import re +import os + + +class OEList(list): + """OpenEmbedded 'list' type + + Acts as an ordinary list, but is constructed from a string value and a + separator (optional), and re-joins itself when converted to a string with + str(). Set the variable type flag to 'list' to use this type, and the + 'separator' flag may be specified (defaulting to whitespace).""" + + name = "list" + + def __init__(self, value, separator = None): + if value is not None: + list.__init__(self, value.split(separator)) + else: + list.__init__(self) + + if separator is None: + self.separator = " " + else: + self.separator = separator + + def __str__(self): + return self.separator.join(self) + +def choice(value, choices): + """OpenEmbedded 'choice' type + + Acts as a multiple choice for the user. To use this, set the variable + type flag to 'choice', and set the 'choices' flag to a space separated + list of valid values.""" + if not isinstance(value, basestring): + raise TypeError("choice accepts a string, not '%s'" % type(value)) + + value = value.lower() + choices = choices.lower() + if value not in choices.split(): + raise ValueError("Invalid choice '%s'. Valid choices: %s" % + (value, choices)) + return value + +class NoMatch(object): + """Stub python regex pattern object which never matches anything""" + def findall(self, string, flags=0): + return None + + def finditer(self, string, flags=0): + return None + + def match(self, flags=0): + return None + + def search(self, string, flags=0): + return None + + def split(self, string, maxsplit=0): + return None + + def sub(pattern, repl, string, count=0): + return None + + def subn(pattern, repl, string, count=0): + return None + +NoMatch = NoMatch() + +def regex(value, regexflags=None): + """OpenEmbedded 'regex' type + + Acts as a regular expression, returning the pre-compiled regular + expression pattern object. To use this type, set the variable type flag + to 'regex', and optionally, set the 'regexflags' type to a space separated + list of the flags to control the regular expression matching (e.g. + FOO[regexflags] += 'ignorecase'). See the python documentation on the + 're' module for a list of valid flags.""" + + flagval = 0 + if regexflags: + for flag in regexflags.split(): + flag = flag.upper() + try: + flagval |= getattr(re, flag) + except AttributeError: + raise ValueError("Invalid regex flag '%s'" % flag) + + if not value: + # Let's ensure that the default behavior for an undefined or empty + # variable is to match nothing. If the user explicitly wants to match + # anything, they can match '.*' instead. + return NoMatch + + try: + return re.compile(value, flagval) + except re.error as exc: + raise ValueError("Invalid regex value '%s': %s" % + (value, exc.args[0])) + +def boolean(value): + """OpenEmbedded 'boolean' type + + Valid values for true: 'yes', 'y', 'true', 't', '1' + Valid values for false: 'no', 'n', 'false', 'f', '0' + """ + + if not isinstance(value, basestring): + raise TypeError("boolean accepts a string, not '%s'" % type(value)) + + value = value.lower() + if value in ('yes', 'y', 'true', 't', '1'): + return True + elif value in ('no', 'n', 'false', 'f', '0'): + return False + raise ValueError("Invalid boolean value '%s'" % value) + +def integer(value, numberbase=10): + """OpenEmbedded 'integer' type + + Defaults to base 10, but this can be specified using the optional + 'numberbase' flag.""" + + return int(value, int(numberbase)) + +_float = float +def float(value, fromhex='false'): + """OpenEmbedded floating point type + + To use this type, set the type flag to 'float', and optionally set the + 'fromhex' flag to a true value (obeying the same rules as for the + 'boolean' type) if the value is in base 16 rather than base 10.""" + + if boolean(fromhex): + return _float.fromhex(value) + else: + return _float(value) + +def path(value, relativeto='', normalize='true', mustexist='false'): + value = os.path.join(relativeto, value) + + if boolean(normalize): + value = os.path.normpath(value) + + if boolean(mustexist): + try: + open(value, 'r') + except IOError as exc: + if exc.errno == errno.ENOENT: + raise ValueError("{0}: {1}".format(value, os.strerror(errno.ENOENT))) + + return value |