mirror of
https://github.com/GNS3/gns3-gui.git
synced 2026-05-17 00:46:01 +03:00
124 lines
3.6 KiB
Python
124 lines
3.6 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import shlex
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import importlib
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import hashlib
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import re
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def import_from_string(string_val):
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"""
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Attempt to import a name from its string representation.
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"""
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try:
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parts = string_val.split('.')
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module_path, class_name = '.'.join(parts[:-1]), parts[-1]
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module = importlib.import_module(module_path)
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return getattr(module, class_name)
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except ImportError:
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msg = "Could not import '%s'." % string_val
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raise ImportError(msg)
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def md5_hash_file(path):
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"""
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Compute and md5 hash for file
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:returns: hexadecimal md5
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"""
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m = hashlib.md5()
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with open(path, "rb") as f:
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while True:
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buf = f.read(128)
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if not buf:
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break
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m.update(buf)
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return m.hexdigest()
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def parse_version(version):
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"""
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Return a comparable tuple from a version string. We try to force tuple to semver with version like 1.2.0
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Replace pkg_resources.parse_version which now display a warning when use for comparing version with tuple
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:returns: Version string as comparable tuple
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"""
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release_type_found = False
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version_infos = re.split('(\\.|[a-z]+)', version)
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version = []
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for info in version_infos:
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if info == '.' or len(info) == 0:
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continue
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try:
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info = int(info)
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# We pad with zero to compare only on string
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# This avoid issue when comparing version with different length
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version.append("%06d" % (info,))
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except ValueError:
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# Force to a version with three number
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if len(version) == 1:
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version.append("00000")
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if len(version) == 2:
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version.append("000000")
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# We want rc to be at lower level than dev version
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if info == 'rc':
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info = 'c'
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version.append(info)
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release_type_found = True
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if release_type_found is False:
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# Force to a version with three number
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if len(version) == 1:
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version.append("00000")
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if len(version) == 2:
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version.append("000000")
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version.append("final")
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return tuple(version)
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def human_filesize(size):
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for unit in ['B', 'KB', 'MB', 'GB']:
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if abs(size) < 1024.0:
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return "%3.1f %s" % (size, unit)
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size /= 1024.0
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return "%.1f %s" % (size, 'TB')
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def natural_sort_key(s):
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"""
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Return string for sorting string with natural sort:
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* pc1
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* pc2
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* pc10
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"""
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return [int(text) if text.isdecimal() else text.lower() for text in re.split('([0-9]+)', s)]
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def shlex_quote(s):
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"""
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Compatible shlex_quote to handle case where Windows needs double quotes around file names, not single quotes.
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"""
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if sys.platform.startswith("win"):
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return s if re.match(r'^[-_\w./]+$', s) else '"%s"' % s.replace('"', '\\"')
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else:
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return shlex.quote(s)
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