| # Copyright 2012-2015 The Meson development team |
| |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """A library of random helper functionality.""" |
| |
| import stat |
| import platform, subprocess, operator, os, shutil, re |
| import collections |
| |
| from glob import glob |
| |
| class MesonException(Exception): |
| '''Exceptions thrown by Meson''' |
| |
| class EnvironmentException(MesonException): |
| '''Exceptions thrown while processing and creating the build environment''' |
| |
| class FileMode: |
| # The first triad is for owner permissions, the second for group permissions, |
| # and the third for others (everyone else). |
| # For the 1st character: |
| # 'r' means can read |
| # '-' means not allowed |
| # For the 2nd character: |
| # 'w' means can write |
| # '-' means not allowed |
| # For the 3rd character: |
| # 'x' means can execute |
| # 's' means can execute and setuid/setgid is set (owner/group triads only) |
| # 'S' means cannot execute and setuid/setgid is set (owner/group triads only) |
| # 't' means can execute and sticky bit is set ("others" triads only) |
| # 'T' means cannot execute and sticky bit is set ("others" triads only) |
| # '-' means none of these are allowed |
| # |
| # The meanings of 'rwx' perms is not obvious for directories; see: |
| # https://www.hackinglinuxexposed.com/articles/20030424.html |
| # |
| # For information on this notation such as setuid/setgid/sticky bits, see: |
| # https://en.wikipedia.org/wiki/File_system_permissions#Symbolic_notation |
| symbolic_perms_regex = re.compile('[r-][w-][xsS-]' # Owner perms |
| '[r-][w-][xsS-]' # Group perms |
| '[r-][w-][xtT-]') # Others perms |
| |
| def __init__(self, perms=None, owner=None, group=None): |
| self.perms_s = perms |
| self.perms = self.perms_s_to_bits(perms) |
| self.owner = owner |
| self.group = group |
| |
| def __repr__(self): |
| ret = '<FileMode: {!r} owner={} group={}' |
| return ret.format(self.perms_s, self.owner, self.group) |
| |
| @classmethod |
| def perms_s_to_bits(cls, perms_s): |
| ''' |
| Does the opposite of stat.filemode(), converts strings of the form |
| 'rwxr-xr-x' to st_mode enums which can be passed to os.chmod() |
| ''' |
| if perms_s is None: |
| # No perms specified, we will not touch the permissions |
| return -1 |
| eg = 'rwxr-xr-x' |
| if not isinstance(perms_s, str): |
| msg = 'Install perms must be a string. For example, {!r}' |
| raise MesonException(msg.format(eg)) |
| if len(perms_s) != 9 or not cls.symbolic_perms_regex.match(perms_s): |
| msg = 'File perms {!r} must be exactly 9 chars. For example, {!r}' |
| raise MesonException(msg.format(perms_s, eg)) |
| perms = 0 |
| # Owner perms |
| if perms_s[0] == 'r': |
| perms |= stat.S_IRUSR |
| if perms_s[1] == 'w': |
| perms |= stat.S_IWUSR |
| if perms_s[2] == 'x': |
| perms |= stat.S_IXUSR |
| elif perms_s[2] == 'S': |
| perms |= stat.S_ISUID |
| elif perms_s[2] == 's': |
| perms |= stat.S_IXUSR |
| perms |= stat.S_ISUID |
| # Group perms |
| if perms_s[3] == 'r': |
| perms |= stat.S_IRGRP |
| if perms_s[4] == 'w': |
| perms |= stat.S_IWGRP |
| if perms_s[5] == 'x': |
| perms |= stat.S_IXGRP |
| elif perms_s[5] == 'S': |
| perms |= stat.S_ISGID |
| elif perms_s[5] == 's': |
| perms |= stat.S_IXGRP |
| perms |= stat.S_ISGID |
| # Others perms |
| if perms_s[6] == 'r': |
| perms |= stat.S_IROTH |
| if perms_s[7] == 'w': |
| perms |= stat.S_IWOTH |
| if perms_s[8] == 'x': |
| perms |= stat.S_IXOTH |
| elif perms_s[8] == 'T': |
| perms |= stat.S_ISVTX |
| elif perms_s[8] == 't': |
| perms |= stat.S_IXOTH |
| perms |= stat.S_ISVTX |
| return perms |
| |
| class File: |
| def __init__(self, is_built, subdir, fname): |
| self.is_built = is_built |
| self.subdir = subdir |
| self.fname = fname |
| assert(isinstance(self.subdir, str)) |
| assert(isinstance(self.fname, str)) |
| |
| def __str__(self): |
| return self.relative_name() |
| |
| def __repr__(self): |
| ret = '<File: {0}' |
| if not self.is_built: |
| ret += ' (not built)' |
| ret += '>' |
| return ret.format(self.relative_name()) |
| |
| @staticmethod |
| def from_source_file(source_root, subdir, fname): |
| if not os.path.isfile(os.path.join(source_root, subdir, fname)): |
| raise MesonException('File %s does not exist.' % fname) |
| return File(False, subdir, fname) |
| |
| @staticmethod |
| def from_built_file(subdir, fname): |
| return File(True, subdir, fname) |
| |
| @staticmethod |
| def from_absolute_file(fname): |
| return File(False, '', fname) |
| |
| def rel_to_builddir(self, build_to_src): |
| if self.is_built: |
| return self.relative_name() |
| else: |
| return os.path.join(build_to_src, self.subdir, self.fname) |
| |
| def absolute_path(self, srcdir, builddir): |
| absdir = srcdir |
| if self.is_built: |
| absdir = builddir |
| return os.path.join(absdir, self.relative_name()) |
| |
| def endswith(self, ending): |
| return self.fname.endswith(ending) |
| |
| def split(self, s): |
| return self.fname.split(s) |
| |
| def __eq__(self, other): |
| return (self.fname, self.subdir, self.is_built) == (other.fname, other.subdir, other.is_built) |
| |
| def __hash__(self): |
| return hash((self.fname, self.subdir, self.is_built)) |
| |
| def relative_name(self): |
| return os.path.join(self.subdir, self.fname) |
| |
| def get_meson_script(env, script): |
| ''' |
| Given the path of `meson.py`/`meson`, get the path of a meson script such |
| as `mesonintrospect` or `mesontest`. |
| ''' |
| meson_py = env.get_build_command() |
| (base, ext) = os.path.splitext(meson_py) |
| return os.path.join(os.path.dirname(base), script + ext) |
| |
| def get_compiler_for_source(compilers, src): |
| for comp in compilers: |
| if comp.can_compile(src): |
| return comp |
| raise RuntimeError('No specified compiler can handle file {!s}'.format(src)) |
| |
| def classify_unity_sources(compilers, sources): |
| compsrclist = {} |
| for src in sources: |
| comp = get_compiler_for_source(compilers, src) |
| if comp not in compsrclist: |
| compsrclist[comp] = [src] |
| else: |
| compsrclist[comp].append(src) |
| return compsrclist |
| |
| def flatten(item): |
| if not isinstance(item, list): |
| return item |
| result = [] |
| for i in item: |
| if isinstance(i, list): |
| result += flatten(i) |
| else: |
| result.append(i) |
| return result |
| |
| def is_osx(): |
| return platform.system().lower() == 'darwin' |
| |
| def is_linux(): |
| return platform.system().lower() == 'linux' |
| |
| def is_windows(): |
| platname = platform.system().lower() |
| return platname == 'windows' or 'mingw' in platname |
| |
| def is_cygwin(): |
| platname = platform.system().lower() |
| return platname.startswith('cygwin') |
| |
| def is_debianlike(): |
| return os.path.isfile('/etc/debian_version') |
| |
| def exe_exists(arglist): |
| try: |
| p = subprocess.Popen(arglist, stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
| p.communicate() |
| if p.returncode == 0: |
| return True |
| except FileNotFoundError: |
| pass |
| return False |
| |
| def detect_vcs(source_dir): |
| vcs_systems = [ |
| dict(name = 'git', cmd = 'git', repo_dir = '.git', get_rev = 'git describe --dirty=+', rev_regex = '(.*)', dep = '.git/logs/HEAD'), |
| dict(name = 'mercurial', cmd = 'hg', repo_dir = '.hg', get_rev = 'hg id -i', rev_regex = '(.*)', dep = '.hg/dirstate'), |
| dict(name = 'subversion', cmd = 'svn', repo_dir = '.svn', get_rev = 'svn info', rev_regex = 'Revision: (.*)', dep = '.svn/wc.db'), |
| dict(name = 'bazaar', cmd = 'bzr', repo_dir = '.bzr', get_rev = 'bzr revno', rev_regex = '(.*)', dep = '.bzr'), |
| ] |
| |
| segs = source_dir.replace('\\', '/').split('/') |
| for i in range(len(segs), -1, -1): |
| curdir = '/'.join(segs[:i]) |
| for vcs in vcs_systems: |
| if os.path.isdir(os.path.join(curdir, vcs['repo_dir'])) and shutil.which(vcs['cmd']): |
| vcs['wc_dir'] = curdir |
| return vcs |
| return None |
| |
| def grab_leading_numbers(vstr, strict=False): |
| result = [] |
| for x in vstr.split('.'): |
| try: |
| result.append(int(x)) |
| except ValueError as e: |
| if strict: |
| msg = 'Invalid version to compare against: {!r}; only ' \ |
| 'numeric digits separated by "." are allowed: ' + str(e) |
| raise MesonException(msg.format(vstr)) |
| break |
| return result |
| |
| numpart = re.compile('[0-9.]+') |
| |
| def version_compare(vstr1, vstr2, strict=False): |
| match = numpart.match(vstr1.strip()) |
| if match is None: |
| msg = 'Uncomparable version string {!r}.' |
| raise MesonException(msg.format(vstr1)) |
| vstr1 = match.group(0) |
| if vstr2.startswith('>='): |
| cmpop = operator.ge |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('<='): |
| cmpop = operator.le |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('!='): |
| cmpop = operator.ne |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('=='): |
| cmpop = operator.eq |
| vstr2 = vstr2[2:] |
| elif vstr2.startswith('='): |
| cmpop = operator.eq |
| vstr2 = vstr2[1:] |
| elif vstr2.startswith('>'): |
| cmpop = operator.gt |
| vstr2 = vstr2[1:] |
| elif vstr2.startswith('<'): |
| cmpop = operator.lt |
| vstr2 = vstr2[1:] |
| else: |
| cmpop = operator.eq |
| varr1 = grab_leading_numbers(vstr1, strict) |
| varr2 = grab_leading_numbers(vstr2, strict) |
| return cmpop(varr1, varr2) |
| |
| def version_compare_many(vstr1, conditions): |
| if not isinstance(conditions, (list, tuple)): |
| conditions = [conditions] |
| found = [] |
| not_found = [] |
| for req in conditions: |
| if not version_compare(vstr1, req, strict=True): |
| not_found.append(req) |
| else: |
| found.append(req) |
| return not_found == [], not_found, found |
| |
| def default_libdir(): |
| if is_debianlike(): |
| try: |
| pc = subprocess.Popen(['dpkg-architecture', '-qDEB_HOST_MULTIARCH'], |
| stdout=subprocess.PIPE, |
| stderr=subprocess.DEVNULL) |
| (stdo, _) = pc.communicate() |
| if pc.returncode == 0: |
| archpath = stdo.decode().strip() |
| return 'lib/' + archpath |
| except Exception: |
| pass |
| if os.path.isdir('/usr/lib64') and not os.path.islink('/usr/lib64'): |
| return 'lib64' |
| return 'lib' |
| |
| def default_libexecdir(): |
| # There is no way to auto-detect this, so it must be set at build time |
| return 'libexec' |
| |
| def default_prefix(): |
| return 'c:/' if is_windows() else '/usr/local' |
| |
| def get_library_dirs(): |
| if is_windows(): |
| return ['C:/mingw/lib'] # Fixme |
| if is_osx(): |
| return ['/usr/lib'] # Fix me as well. |
| # The following is probably Debian/Ubuntu specific. |
| # /usr/local/lib is first because it contains stuff |
| # installed by the sysadmin and is probably more up-to-date |
| # than /usr/lib. If you feel that this search order is |
| # problematic, please raise the issue on the mailing list. |
| unixdirs = ['/usr/local/lib', '/usr/lib', '/lib'] |
| plat = subprocess.check_output(['uname', '-m']).decode().strip() |
| # This is a terrible hack. I admit it and I'm really sorry. |
| # I just don't know what the correct solution is. |
| if plat == 'i686': |
| plat = 'i386' |
| if plat.startswith('arm'): |
| plat = 'arm' |
| unixdirs += glob('/usr/lib/' + plat + '*') |
| if os.path.exists('/usr/lib64'): |
| unixdirs.append('/usr/lib64') |
| unixdirs += glob('/lib/' + plat + '*') |
| if os.path.exists('/lib64'): |
| unixdirs.append('/lib64') |
| unixdirs += glob('/lib/' + plat + '*') |
| return unixdirs |
| |
| |
| def do_replacement(regex, line, confdata): |
| match = re.search(regex, line) |
| while match: |
| varname = match.group(1) |
| if varname in confdata: |
| (var, desc) = confdata.get(varname) |
| if isinstance(var, str): |
| pass |
| elif isinstance(var, int): |
| var = str(var) |
| else: |
| raise RuntimeError('Tried to replace a variable with something other than a string or int.') |
| else: |
| var = '' |
| line = line.replace('@' + varname + '@', var) |
| match = re.search(regex, line) |
| return line |
| |
| def do_mesondefine(line, confdata): |
| arr = line.split() |
| if len(arr) != 2: |
| raise MesonException('#mesondefine does not contain exactly two tokens: %s', line.strip()) |
| varname = arr[1] |
| try: |
| (v, desc) = confdata.get(varname) |
| except KeyError: |
| return '/* #undef %s */\n' % varname |
| if isinstance(v, bool): |
| if v: |
| return '#define %s\n' % varname |
| else: |
| return '#undef %s\n' % varname |
| elif isinstance(v, int): |
| return '#define %s %d\n' % (varname, v) |
| elif isinstance(v, str): |
| return '#define %s %s\n' % (varname, v) |
| else: |
| raise MesonException('#mesondefine argument "%s" is of unknown type.' % varname) |
| |
| |
| def do_conf_file(src, dst, confdata): |
| try: |
| with open(src, encoding='utf-8') as f: |
| data = f.readlines() |
| except Exception as e: |
| raise MesonException('Could not read input file %s: %s' % (src, str(e))) |
| # Only allow (a-z, A-Z, 0-9, _, -) as valid characters for a define |
| # Also allow escaping '@' with '\@' |
| regex = re.compile(r'[^\\]?@([-a-zA-Z0-9_]+)@') |
| result = [] |
| for line in data: |
| if line.startswith('#mesondefine'): |
| line = do_mesondefine(line, confdata) |
| else: |
| line = do_replacement(regex, line, confdata) |
| result.append(line) |
| dst_tmp = dst + '~' |
| with open(dst_tmp, 'w', encoding='utf-8') as f: |
| f.writelines(result) |
| shutil.copymode(src, dst_tmp) |
| replace_if_different(dst, dst_tmp) |
| |
| def dump_conf_header(ofilename, cdata): |
| with open(ofilename, 'w', encoding='utf-8') as ofile: |
| ofile.write('''/* |
| * Autogenerated by the Meson build system. |
| * Do not edit, your changes will be lost. |
| */ |
| |
| #pragma once |
| |
| ''') |
| for k in sorted(cdata.keys()): |
| (v, desc) = cdata.get(k) |
| if desc: |
| ofile.write('/* %s */\n' % desc) |
| if isinstance(v, bool): |
| if v: |
| ofile.write('#define %s\n\n' % k) |
| else: |
| ofile.write('#undef %s\n\n' % k) |
| elif isinstance(v, (int, str)): |
| ofile.write('#define %s %s\n\n' % (k, v)) |
| else: |
| raise MesonException('Unknown data type in configuration file entry: ' + k) |
| |
| def replace_if_different(dst, dst_tmp): |
| # If contents are identical, don't touch the file to prevent |
| # unnecessary rebuilds. |
| different = True |
| try: |
| with open(dst, 'r') as f1, open(dst_tmp, 'r') as f2: |
| if f1.read() == f2.read(): |
| different = False |
| except FileNotFoundError: |
| pass |
| if different: |
| os.replace(dst_tmp, dst) |
| else: |
| os.unlink(dst_tmp) |
| |
| def typeslistify(item, types): |
| ''' |
| Ensure that type(@item) is one of @types or a |
| list of items all of which are of type @types |
| ''' |
| if isinstance(item, types): |
| item = [item] |
| if not isinstance(item, list): |
| raise MesonException('Item must be a list or one of {!r}'.format(types)) |
| for i in item: |
| if i is not None and not isinstance(i, types): |
| raise MesonException('List item must be one of {!r}'.format(types)) |
| return item |
| |
| def stringlistify(item): |
| return typeslistify(item, str) |
| |
| def expand_arguments(args): |
| expended_args = [] |
| for arg in args: |
| if not arg.startswith('@'): |
| expended_args.append(arg) |
| continue |
| |
| args_file = arg[1:] |
| try: |
| with open(args_file) as f: |
| extended_args = f.read().split() |
| expended_args += extended_args |
| except Exception as e: |
| print('Error expanding command line arguments, %s not found' % args_file) |
| print(e) |
| return None |
| return expended_args |
| |
| def Popen_safe(args, write=None, stderr=subprocess.PIPE, **kwargs): |
| p = subprocess.Popen(args, universal_newlines=True, |
| close_fds=False, |
| stdout=subprocess.PIPE, |
| stderr=stderr, **kwargs) |
| o, e = p.communicate(write) |
| return p, o, e |
| |
| def commonpath(paths): |
| ''' |
| For use on Python 3.4 where os.path.commonpath is not available. |
| We currently use it everywhere so this receives enough testing. |
| ''' |
| # XXX: Replace me with os.path.commonpath when we start requiring Python 3.5 |
| import pathlib |
| if not paths: |
| raise ValueError('arg is an empty sequence') |
| common = pathlib.PurePath(paths[0]) |
| for path in paths[1:]: |
| new = [] |
| path = pathlib.PurePath(path) |
| for c, p in zip(common.parts, path.parts): |
| if c != p: |
| break |
| new.append(c) |
| # Don't convert '' into '.' |
| if not new: |
| common = '' |
| break |
| new = os.path.join(*new) |
| common = pathlib.PurePath(new) |
| return str(common) |
| |
| def iter_regexin_iter(regexiter, initer): |
| ''' |
| Takes each regular expression in @regexiter and tries to search for it in |
| every item in @initer. If there is a match, returns that match. |
| Else returns False. |
| ''' |
| for regex in regexiter: |
| for ii in initer: |
| if not isinstance(ii, str): |
| continue |
| match = re.search(regex, ii) |
| if match: |
| return match.group() |
| return False |
| |
| def _substitute_values_check_errors(command, values): |
| # Error checking |
| inregex = ('@INPUT([0-9]+)?@', '@PLAINNAME@', '@BASENAME@') |
| outregex = ('@OUTPUT([0-9]+)?@', '@OUTDIR@') |
| if '@INPUT@' not in values: |
| # Error out if any input-derived templates are present in the command |
| match = iter_regexin_iter(inregex, command) |
| if match: |
| m = 'Command cannot have {!r}, since no input files were specified' |
| raise MesonException(m.format(match)) |
| else: |
| if len(values['@INPUT@']) > 1: |
| # Error out if @PLAINNAME@ or @BASENAME@ is present in the command |
| match = iter_regexin_iter(inregex[1:], command) |
| if match: |
| raise MesonException('Command cannot have {!r} when there is ' |
| 'more than one input file'.format(match)) |
| # Error out if an invalid @INPUTnn@ template was specified |
| for each in command: |
| if not isinstance(each, str): |
| continue |
| match = re.search(inregex[0], each) |
| if match and match.group() not in values: |
| m = 'Command cannot have {!r} since there are only {!r} inputs' |
| raise MesonException(m.format(match.group(), len(values['@INPUT@']))) |
| if '@OUTPUT@' not in values: |
| # Error out if any output-derived templates are present in the command |
| match = iter_regexin_iter(outregex, command) |
| if match: |
| m = 'Command cannot have {!r} since there are no outputs' |
| raise MesonException(m.format(match)) |
| else: |
| # Error out if an invalid @OUTPUTnn@ template was specified |
| for each in command: |
| if not isinstance(each, str): |
| continue |
| match = re.search(outregex[0], each) |
| if match and match.group() not in values: |
| m = 'Command cannot have {!r} since there are only {!r} outputs' |
| raise MesonException(m.format(match.group(), len(values['@OUTPUT@']))) |
| |
| def substitute_values(command, values): |
| ''' |
| Substitute the template strings in the @values dict into the list of |
| strings @command and return a new list. For a full list of the templates, |
| see get_filenames_templates_dict() |
| |
| If multiple inputs/outputs are given in the @values dictionary, we |
| substitute @INPUT@ and @OUTPUT@ only if they are the entire string, not |
| just a part of it, and in that case we substitute *all* of them. |
| ''' |
| # Error checking |
| _substitute_values_check_errors(command, values) |
| # Substitution |
| outcmd = [] |
| for vv in command: |
| if not isinstance(vv, str): |
| outcmd.append(vv) |
| elif '@INPUT@' in vv: |
| inputs = values['@INPUT@'] |
| if vv == '@INPUT@': |
| outcmd += inputs |
| elif len(inputs) == 1: |
| outcmd.append(vv.replace('@INPUT@', inputs[0])) |
| else: |
| raise MesonException("Command has '@INPUT@' as part of a " |
| "string and more than one input file") |
| elif '@OUTPUT@' in vv: |
| outputs = values['@OUTPUT@'] |
| if vv == '@OUTPUT@': |
| outcmd += outputs |
| elif len(outputs) == 1: |
| outcmd.append(vv.replace('@OUTPUT@', outputs[0])) |
| else: |
| raise MesonException("Command has '@OUTPUT@' as part of a " |
| "string and more than one output file") |
| # Append values that are exactly a template string. |
| # This is faster than a string replace. |
| elif vv in values: |
| outcmd.append(values[vv]) |
| # Substitute everything else with replacement |
| else: |
| for key, value in values.items(): |
| if key in ('@INPUT@', '@OUTPUT@'): |
| # Already done above |
| continue |
| vv = vv.replace(key, value) |
| outcmd.append(vv) |
| return outcmd |
| |
| def get_filenames_templates_dict(inputs, outputs): |
| ''' |
| Create a dictionary with template strings as keys and values as values for |
| the following templates: |
| |
| @INPUT@ - the full path to one or more input files, from @inputs |
| @OUTPUT@ - the full path to one or more output files, from @outputs |
| @OUTDIR@ - the full path to the directory containing the output files |
| |
| If there is only one input file, the following keys are also created: |
| |
| @PLAINNAME@ - the filename of the input file |
| @BASENAME@ - the filename of the input file with the extension removed |
| |
| If there is more than one input file, the following keys are also created: |
| |
| @INPUT0@, @INPUT1@, ... one for each input file |
| |
| If there is more than one output file, the following keys are also created: |
| |
| @OUTPUT0@, @OUTPUT1@, ... one for each output file |
| ''' |
| values = {} |
| # Gather values derived from the input |
| if inputs: |
| # We want to substitute all the inputs. |
| values['@INPUT@'] = inputs |
| for (ii, vv) in enumerate(inputs): |
| # Write out @INPUT0@, @INPUT1@, ... |
| values['@INPUT{}@'.format(ii)] = vv |
| if len(inputs) == 1: |
| # Just one value, substitute @PLAINNAME@ and @BASENAME@ |
| values['@PLAINNAME@'] = plain = os.path.split(inputs[0])[1] |
| values['@BASENAME@'] = os.path.splitext(plain)[0] |
| if outputs: |
| # Gather values derived from the outputs, similar to above. |
| values['@OUTPUT@'] = outputs |
| for (ii, vv) in enumerate(outputs): |
| values['@OUTPUT{}@'.format(ii)] = vv |
| # Outdir should be the same for all outputs |
| values['@OUTDIR@'] = os.path.split(outputs[0])[0] |
| # Many external programs fail on empty arguments. |
| if values['@OUTDIR@'] == '': |
| values['@OUTDIR@'] = '.' |
| return values |
| |
| class OrderedSet(collections.MutableSet): |
| """A set that preserves the order in which items are added, by first |
| insertion. |
| """ |
| def __init__(self, iterable=None): |
| self.__container = collections.OrderedDict() |
| if iterable: |
| self.update(iterable) |
| |
| def __contains__(self, value): |
| return value in self.__container |
| |
| def __iter__(self): |
| return iter(self.__container.keys()) |
| |
| def __len__(self): |
| return len(self.__container) |
| |
| def __repr__(self): |
| # Don't print 'OrderedSet("")' for an empty set. |
| if self.__container: |
| return 'OrderedSet("{}")'.format('", "'.join(self.__container.keys())) |
| return 'OrderedSet()' |
| |
| def add(self, value): |
| self.__container[value] = None |
| |
| def discard(self, value): |
| if value in self.__container: |
| del self.__container[value] |
| |
| def update(self, iterable): |
| for item in iterable: |
| self.__container[item] = None |
