Brad Bishop | c342db3 | 2019-05-15 21:57:59 -0400 | [diff] [blame] | 1 | # |
| 2 | # SPDX-License-Identifier: GPL-2.0-only |
| 3 | # |
| 4 | |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 5 | import errno |
| 6 | import re |
| 7 | import os |
| 8 | |
| 9 | |
| 10 | class OEList(list): |
| 11 | """OpenEmbedded 'list' type |
| 12 | |
| 13 | Acts as an ordinary list, but is constructed from a string value and a |
| 14 | separator (optional), and re-joins itself when converted to a string with |
| 15 | str(). Set the variable type flag to 'list' to use this type, and the |
| 16 | 'separator' flag may be specified (defaulting to whitespace).""" |
| 17 | |
| 18 | name = "list" |
| 19 | |
| 20 | def __init__(self, value, separator = None): |
| 21 | if value is not None: |
| 22 | list.__init__(self, value.split(separator)) |
| 23 | else: |
| 24 | list.__init__(self) |
| 25 | |
| 26 | if separator is None: |
| 27 | self.separator = " " |
| 28 | else: |
| 29 | self.separator = separator |
| 30 | |
| 31 | def __str__(self): |
| 32 | return self.separator.join(self) |
| 33 | |
| 34 | def choice(value, choices): |
| 35 | """OpenEmbedded 'choice' type |
| 36 | |
| 37 | Acts as a multiple choice for the user. To use this, set the variable |
| 38 | type flag to 'choice', and set the 'choices' flag to a space separated |
| 39 | list of valid values.""" |
Patrick Williams | c0f7c04 | 2017-02-23 20:41:17 -0600 | [diff] [blame] | 40 | if not isinstance(value, str): |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 41 | raise TypeError("choice accepts a string, not '%s'" % type(value)) |
| 42 | |
| 43 | value = value.lower() |
| 44 | choices = choices.lower() |
| 45 | if value not in choices.split(): |
| 46 | raise ValueError("Invalid choice '%s'. Valid choices: %s" % |
| 47 | (value, choices)) |
| 48 | return value |
| 49 | |
| 50 | class NoMatch(object): |
| 51 | """Stub python regex pattern object which never matches anything""" |
| 52 | def findall(self, string, flags=0): |
| 53 | return None |
| 54 | |
| 55 | def finditer(self, string, flags=0): |
| 56 | return None |
| 57 | |
| 58 | def match(self, flags=0): |
| 59 | return None |
| 60 | |
| 61 | def search(self, string, flags=0): |
| 62 | return None |
| 63 | |
| 64 | def split(self, string, maxsplit=0): |
| 65 | return None |
| 66 | |
| 67 | def sub(pattern, repl, string, count=0): |
| 68 | return None |
| 69 | |
| 70 | def subn(pattern, repl, string, count=0): |
| 71 | return None |
| 72 | |
| 73 | NoMatch = NoMatch() |
| 74 | |
| 75 | def regex(value, regexflags=None): |
| 76 | """OpenEmbedded 'regex' type |
| 77 | |
| 78 | Acts as a regular expression, returning the pre-compiled regular |
| 79 | expression pattern object. To use this type, set the variable type flag |
| 80 | to 'regex', and optionally, set the 'regexflags' type to a space separated |
| 81 | list of the flags to control the regular expression matching (e.g. |
| 82 | FOO[regexflags] += 'ignorecase'). See the python documentation on the |
| 83 | 're' module for a list of valid flags.""" |
| 84 | |
| 85 | flagval = 0 |
| 86 | if regexflags: |
| 87 | for flag in regexflags.split(): |
| 88 | flag = flag.upper() |
| 89 | try: |
| 90 | flagval |= getattr(re, flag) |
| 91 | except AttributeError: |
| 92 | raise ValueError("Invalid regex flag '%s'" % flag) |
| 93 | |
| 94 | if not value: |
| 95 | # Let's ensure that the default behavior for an undefined or empty |
| 96 | # variable is to match nothing. If the user explicitly wants to match |
| 97 | # anything, they can match '.*' instead. |
| 98 | return NoMatch |
| 99 | |
| 100 | try: |
| 101 | return re.compile(value, flagval) |
| 102 | except re.error as exc: |
| 103 | raise ValueError("Invalid regex value '%s': %s" % |
| 104 | (value, exc.args[0])) |
| 105 | |
| 106 | def boolean(value): |
| 107 | """OpenEmbedded 'boolean' type |
| 108 | |
| 109 | Valid values for true: 'yes', 'y', 'true', 't', '1' |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 110 | Valid values for false: 'no', 'n', 'false', 'f', '0', None |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 111 | """ |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 112 | if value is None: |
| 113 | return False |
| 114 | |
| 115 | if isinstance(value, bool): |
| 116 | return value |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 117 | |
Patrick Williams | c0f7c04 | 2017-02-23 20:41:17 -0600 | [diff] [blame] | 118 | if not isinstance(value, str): |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 119 | raise TypeError("boolean accepts a string, not '%s'" % type(value)) |
| 120 | |
| 121 | value = value.lower() |
| 122 | if value in ('yes', 'y', 'true', 't', '1'): |
| 123 | return True |
| 124 | elif value in ('no', 'n', 'false', 'f', '0'): |
| 125 | return False |
| 126 | raise ValueError("Invalid boolean value '%s'" % value) |
| 127 | |
| 128 | def integer(value, numberbase=10): |
| 129 | """OpenEmbedded 'integer' type |
| 130 | |
| 131 | Defaults to base 10, but this can be specified using the optional |
| 132 | 'numberbase' flag.""" |
| 133 | |
| 134 | return int(value, int(numberbase)) |
| 135 | |
| 136 | _float = float |
| 137 | def float(value, fromhex='false'): |
| 138 | """OpenEmbedded floating point type |
| 139 | |
| 140 | To use this type, set the type flag to 'float', and optionally set the |
| 141 | 'fromhex' flag to a true value (obeying the same rules as for the |
| 142 | 'boolean' type) if the value is in base 16 rather than base 10.""" |
| 143 | |
| 144 | if boolean(fromhex): |
| 145 | return _float.fromhex(value) |
| 146 | else: |
| 147 | return _float(value) |
| 148 | |
| 149 | def path(value, relativeto='', normalize='true', mustexist='false'): |
| 150 | value = os.path.join(relativeto, value) |
| 151 | |
| 152 | if boolean(normalize): |
| 153 | value = os.path.normpath(value) |
| 154 | |
| 155 | if boolean(mustexist): |
| 156 | try: |
Brad Bishop | 64c979e | 2019-11-04 13:55:29 -0500 | [diff] [blame] | 157 | with open(value, 'r'): |
| 158 | pass |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 159 | except IOError as exc: |
| 160 | if exc.errno == errno.ENOENT: |
| 161 | raise ValueError("{0}: {1}".format(value, os.strerror(errno.ENOENT))) |
| 162 | |
| 163 | return value |
Brad Bishop | 977dc1a | 2019-02-06 16:01:43 -0500 | [diff] [blame] | 164 | |
| 165 | def is_x86(arch): |
| 166 | """ |
| 167 | Check whether arch is x86 or x86_64 |
| 168 | """ |
| 169 | if arch.startswith('x86_') or re.match('i.*86', arch): |
| 170 | return True |
| 171 | else: |
| 172 | return False |
| 173 | |
| 174 | def qemu_use_kvm(kvm, target_arch): |
| 175 | """ |
| 176 | Enable kvm if target_arch == build_arch or both of them are x86 archs. |
| 177 | """ |
| 178 | |
| 179 | use_kvm = False |
| 180 | if kvm and boolean(kvm): |
| 181 | build_arch = os.uname()[4] |
| 182 | if is_x86(build_arch) and is_x86(target_arch): |
| 183 | use_kvm = True |
| 184 | elif build_arch == target_arch: |
| 185 | use_kvm = True |
| 186 | return use_kvm |