Mercurial > hgrepos > Python > libs > ConfigMix

annotate configmix/__init__.py @ 180:e87fa5bd68e7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 03 May 2019 09:31:56 +0200
parents 62db35db8939
children 7cfdc972af42
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
1 # -*- coding: utf-8 -*-
82
218807d7d883 Remove header markup from the Python files and put them into the doc .rst files
Franz Glasner <hg@dom66.de>
parents: 79
diff changeset
2 """A library for helping with configuration files.
4
f76d85ccc5b9 Switch to the "New BSD License"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 0
diff changeset
3
73
6216c561532a Put a Copyright and License notice into the package's __init__.py
Franz Glasner <hg@dom66.de>
parents: 69
diff changeset
4 :Author: Franz Glasner
156
e2e8d21b4122 Adjust copyright to year 2019
Franz Glasner <fzglas.hg@dom66.de>
parents: 144
diff changeset
5 :Copyright: (c) 2015–2019, Franz Glasner.
73
6216c561532a Put a Copyright and License notice into the package's __init__.py
Franz Glasner <hg@dom66.de>
parents: 69
diff changeset
6 All rights reserved.
78
3a8f712d27df Put copyright and license into the README.txt
Franz Glasner <hg@dom66.de>
parents: 73
diff changeset
7 :License: 3-clause BSD License.
73
6216c561532a Put a Copyright and License notice into the package's __init__.py
Franz Glasner <hg@dom66.de>
parents: 69
diff changeset
8 See LICENSE.txt for details.
174
e2505f524ab9 Use the "@(#)" sigil in the package documentation header
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 173
diff changeset
9 :ID: @(#) $Header$
4
f76d85ccc5b9 Switch to the "New BSD License"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 0
diff changeset
10
f76d85ccc5b9 Switch to the "New BSD License"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 0
diff changeset
11 """
0
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
12
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
13 from __future__ import division, print_function, absolute_import
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
14
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
15
170
c247a5dc35ed Begin development of a version 0.7 with some API changes
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 167
diff changeset
16 __version__ = "0.7.dev1"
0
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
17
163
ff03cdf36139 The README.txt should be in the most important parts readable without keyword substitutions.
Franz Glasner <fzglas.hg@dom66.de>
parents: 156
diff changeset
18 __revision__ = "|VCSRevision|"
ff03cdf36139 The README.txt should be in the most important parts readable without keyword substitutions.
Franz Glasner <fzglas.hg@dom66.de>
parents: 156
diff changeset
19 __date__ = "|VCSJustDate|"
52
6c7f90dbce98 Adjusted the Copyright and change the RCS keywords in accordance with "kwarchive"
Franz Glasner <hg@dom66.de>
parents: 45
diff changeset
20
177
6dde1e344ae8 Style: put "__all__" into the meta-variables section as recommended by PEP
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 175
diff changeset
21 __all__ = ["load", "safe_load",
6dde1e344ae8 Style: put "__all__" into the meta-variables section as recommended by PEP
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 175
diff changeset
22 "set_loader", "get_loader",
6dde1e344ae8 Style: put "__all__" into the meta-variables section as recommended by PEP
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 175
diff changeset
23 "get_default_loader",
180
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
24 "Configuration",
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
25 "try_determine_filemode"]
177
6dde1e344ae8 Style: put "__all__" into the meta-variables section as recommended by PEP
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 175
diff changeset
26
0
53ea2bc254e7 Begin a package to abstract some of the important configuration handling stuff.
Franz Glasner <hg@dom66.de>
parents:
diff changeset
27
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
28 import fnmatch
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
29 import copy
180
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
30 import io
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
31 import re
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
32
166
b5ce9a8461bf Use the filesystem encoding explicitely where appropriate.
Franz Glasner <fzglas.hg@dom66.de>
parents: 165
diff changeset
33 from .compat import u, u2fs
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
34 from .config import Configuration
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
35
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
36
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
37 COMMENTS = [u("__comment"),
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
38 u("__doc"),
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
39 ]
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
40 """Prefixes for comment configuration keys that are to be handled as
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
41 comments
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
42
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
43 """
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
44
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
45
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
46 def load(*files, **kwargs):
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
47 """Load the given configuration files, merge them in the given order
108
2196362c0467 Enhance documentation of "configmix.load()"
Franz Glasner <hg@dom66.de>
parents: 107
diff changeset
48 and return the resulting configuration dictionary.
2196362c0467 Enhance documentation of "configmix.load()"
Franz Glasner <hg@dom66.de>
parents: 107
diff changeset
49
2196362c0467 Enhance documentation of "configmix.load()"
Franz Glasner <hg@dom66.de>
parents: 107
diff changeset
50 :param files: the filenames of the configuration files to read and merge
173
b3ba2b0265b5 Docu: Explicitely tag "defaults" as keyword argument
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 172
diff changeset
51 :keyword defaults: optional configuration dictionary with some default
b3ba2b0265b5 Docu: Explicitely tag "defaults" as keyword argument
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 172
diff changeset
52 settings where the settings from `files` are merged
b3ba2b0265b5 Docu: Explicitely tag "defaults" as keyword argument
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 172
diff changeset
53 into
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
54 :type defaults: a configuration dictionary or `None`
108
2196362c0467 Enhance documentation of "configmix.load()"
Franz Glasner <hg@dom66.de>
parents: 107
diff changeset
55 :returns: the configuration
2196362c0467 Enhance documentation of "configmix.load()"
Franz Glasner <hg@dom66.de>
parents: 107
diff changeset
56 :rtype: ~configmix.config.Configuration
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
57
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
58 """
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
59 defaults = kwargs.get("defaults")
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
60 if not files:
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
61 if defaults is None:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
62 return Configuration()
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
63 else:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
64 return Configuration(defaults)
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
65 else:
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
66 if defaults is None:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
67 start = 1
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
68 ex = merge(None, _load_cfg_from_file(files[0]))
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
69 else:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
70 start = 0
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
71 ex = merge(None, defaults)
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
72 for f in files[start:]:
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
73 ex = merge(_load_cfg_from_file(f), ex)
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
74 return Configuration(ex)
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
75
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
76
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
77 def safe_load(*files, **kwargs):
112
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
78 """Analogous to :func:`load` but do merging with :func:`safe_merge`
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
79 instead of :func:`merge`
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
80
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
81 """
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
82 defaults = kwargs.get("defaults")
112
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
83 if not files:
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
84 if defaults is None:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
85 return Configuration()
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
86 else:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
87 return Configuration(defaults)
112
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
88 else:
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
89 if defaults is None:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
90 start = 1
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
91 ex = merge(None, _load_cfg_from_file(files[0]))
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
92 else:
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
93 start = 0
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
94 ex = merge(None, defaults)
112
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
95 ex = safe_merge(None, _load_cfg_from_file(files[0]))
172
8138d56d7cd3 ".load" and ".safe_load" get a keyword parameter "defaults" that allows the provision of a configuration dictionary with default settings
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 171
diff changeset
96 for f in files[start:]:
112
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
97 ex = safe_merge(_load_cfg_from_file(f), ex)
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
98 return Configuration(ex)
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
99
c50ad93eb5dc Implemented a "safe_load()" to load with safe merging
Franz Glasner <hg@dom66.de>
parents: 111
diff changeset
100
138
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
101 def _load_yaml(filename):
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
102 from . import yaml
166
b5ce9a8461bf Use the filesystem encoding explicitely where appropriate.
Franz Glasner <fzglas.hg@dom66.de>
parents: 165
diff changeset
103 with open(u2fs(filename), "rb") as yf:
138
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
104 return yaml.safe_load(yf)
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
105
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
106
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
107 def _load_json(filename):
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
108 from . import json
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
109 return json.load(filename)
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
110
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
111
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
112 def _load_py(filename):
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
113 from . import py
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
114 return py.load(filename)
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
115
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
116
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
117 def _load_ini(filename):
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
118 from . import ini
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
119 return ini.load(filename)
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
120
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
121
180
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
122 EMACS_MODELINE = re.compile(r"-\*-(.*?)-\*-")
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
123 EMACS_MODE = re.compile(r"(?:\A\s*|;\s*)mode[:=]\s*([-_.a-zA-Z0-9]+)")
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
124
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
125
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
126 def try_determine_filemode(filename):
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
127 """Try to determine an explicitely given filemode from an Emacs-compatible
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
128 mode declaration (e.g. ``mode=python``).
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
129
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
130 :param str filename:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
131 :return: the found mode string or `None`
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
132 :rtype: str or None
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
133
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
134 Only the first two lines are searched for.
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
135
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
136 """
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
137 with io.open(filename, encoding="ascii", errors="replace") as f:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
138 idx = 0
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
139 for l in f:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
140 idx += 1
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
141 mo = EMACS_MODELINE.search(l)
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
142 if mo:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
143 mo = EMACS_MODE.search(mo.group(1))
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
144 if mo:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
145 return mo.group(1)
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
146 if idx >= 2:
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
147 break
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
148 return None
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
149
e87fa5bd68e7 Implemented "try_determine_filemode()" to determine a file-mode from an Emacs-compatible declaration
Franz Glasner <fzglas.hg@dom66.de>
parents: 179
diff changeset
150
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
151 DEFAULT_MODE_LOADERS = {
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
152 "python": _load_py,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
153 "yaml": _load_yaml,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
154 "conf": _load_ini,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
155 "conf-windows": _load_ini,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
156 "ini": _load_ini,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
157 "javascript": _load_json,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
158 "json": _load_json,
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
159 }
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
160 """Default associations between file modes and loader functions"""
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
161
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
162
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
163 DEFAULT_EXTENSIONS = [
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
164 ("*.yml", "yaml"),
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
165 ("*.yaml", "yaml"),
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
166 ("*.json", "json"),
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
167 ("*.py", "python"),
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
168 ("*.ini", "conf"),
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
169 ]
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
170 """The builtin default associations of filename extensions with
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
171 file modes -- in that order.
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
172
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
173 The "mode" part may be a string or a callable with a filename
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
174 parameter that returns the mode string for the file or `None` if it
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
175 can not determined.
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
176
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
177 """
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
178
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
179
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
180 DEFAULT_LOADER = object()
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
181 """Marker for the default loader for an extension.
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
182
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
183 To be used in :func:`set_loader`.
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
184 """
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
185
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
186 def get_default_loader(pattern):
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
187 """Return the default loader for the :mod:`fnmatch` pattern `pattern`.
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
188
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
189 :raises: :class:`KeyError` if the `pattern` is not found.
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
190
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
191 """
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
192 for pat, loader in _default_loaders:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
193 if pattern == pat:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
194 return loader
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
195 else:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
196 raise KeyError("No loader for pattern %r" % pattern)
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
197
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
198
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
199 _mode_loaders = {}
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
200 """All configured associations between file modes and loader functions.
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
201
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
202 See :data:`DEFAULT_MODE_LOADERS.
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
203
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
204 """
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
205
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
206 _extensions = []
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
207 """All configured assiciations of filename extensions with file modes.
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
208
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
209 See :data:`DEFAULT_EXTENSIONS`
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
210
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
211 """
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
212
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
213
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
214 def clear_loader():
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
215 """Remove all configured loader associations.
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
216
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
217 The :data:`_default_loaders` are **not** changed.
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
218
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
219 """
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
220 del _loaders[:]
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
221
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
222
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
223 def get_loader(pattern):
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
224 """Return the default loader for the :mod:`fnmatch` pattern `pattern`.
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
225
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
226 :raises: :class:`KeyError` if the `pattern` is not found.
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
227
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
228 """
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
229 for pat, loader in _loaders:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
230 if pattern == pat:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
231 return loader
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
232 else:
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
233 raise KeyError("No loader for pattern %r" % pattern)
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
234
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
235
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
236 def set_loader(fnpattern, mode):
179
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
237 """Associate a :mod:`fnmatch` style pattern `fnpattern` with a
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
238 file-mode `mode` that determines what will be called when
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
239 :func:`load` encounters a file argument that matches `fnpattern`.
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
240
179
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
241 :param str fnpattern: the :mod:`fnmatch` pattern to associate a loader
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
242 with
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
243 :param callable mode: a mode string or a callable that accepts a
179
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
244 `filename` argument and returns a file-mode for
62db35db8939 Docu: formatting
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 178
diff changeset
245 the given file (or `None`)
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
246
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
247 This function prepends to the given pattern to the currently defined
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
248 associations.
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
249
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
250 The OS specific case-sensitivity behaviour of
175
327032bb0f6b Docu: wording
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 174
diff changeset
251 :func:`fnmatch.fnmatch` applies (i.e. :func:`os.path.normpath`
327032bb0f6b Docu: wording
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 174
diff changeset
252 will be called for both arguments).
141
647782859ae1 An extra hint that filename extension comparisons for loader lookup are case-insensitive
Franz Glasner <hg@dom66.de>
parents: 139
diff changeset
253
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
254 If `loader` is :data:`DEFAULT_LOADER` then the default association
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
255 from :data:`_default_loaders` will be used -- if any.
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
256
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
257 """
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
258 if mode is DEFAULT_LOADER:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
259 for p, m in DEFAULT_EXTENSIONS:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
260 if p == fnpattern:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
261 _extensions.insert(0, (fnpattern, m))
171
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
262 break
1ff11462a5c1 The associations from filename extensions to parsers are "fnmatch" style patterns now.
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 170
diff changeset
263 else:
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
264 raise ValueError("no DEFAULT mode for pattern: %r" % fnpattern)
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
265 else:
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
266 _extensions.insert(0, (fnpattern, mode))
138
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
267
b883f4ef1967 Indirectly map extensions to configuration file styles
Franz Glasner <hg@dom66.de>
parents: 122
diff changeset
268
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
269 def _load_cfg_from_file(filename):
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
270 for p, m in _extensions:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
271 if fnmatch.fnmatch(filename, p):
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
272 if callable(m):
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
273 m = m(filename)
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
274 if m is None:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
275 continue
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
276 return _mode_loaders[m](filename)
22
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
277 else:
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
278 raise ValueError("Unknown configuration file type for filename "
6a91db2c2469 A convenience function to load and merge a list of configuration files with different styles
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 13
diff changeset
279 "%r" % filename)
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
280
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
281
11
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
282 if 0:
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
283 #
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
284 # From: https://github.com/jet9/python-yconfig/blob/master/yconfig.py
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
285 # License: BSD License
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
286 #
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
287 def dict_merge(a, b):
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
288 """Recursively merges dict's. not just simple a['key'] = b['key'], if
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
289 both a and bhave a key who's value is a dict then dict_merge is called
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
290 on both values and the result stored in the returned dictionary."""
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
291
11
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
292 if not isinstance(b, dict):
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
293 return b
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
294 result = deepcopy(a)
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
295 for k, v in b.iteritems():
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
296 if k in result and isinstance(result[k], dict):
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
297 result[k] = dict_merge(result[k], v)
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
298 else:
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
299 result[k] = deepcopy(v)
aecb36d4025f Deactivate the "dict_merge()" function from yconfig
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 10
diff changeset
300 return result
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
301
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
302
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
303 def merge(user, default, filter_comments=True):
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
304 """Logically merge the configuration in `user` into `default`.
98
d6ba53ce2091 Better documentation of the core function in "configmix"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 96
diff changeset
305
d6ba53ce2091 Better documentation of the core function in "configmix"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 96
diff changeset
306 :param ~configmix.config.Configuration user:
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
307 the new configuration that will be logically merged
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
308 into `default`
98
d6ba53ce2091 Better documentation of the core function in "configmix"
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 96
diff changeset
309 :param ~configmix.config.Configuration default:
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
310 the base configuration where `user` is logically merged into
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
311 :param bool filter_comments: flag whether to filter comment keys that
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
312 start with any of the items in :data:`COMMENTS`
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
313 :returns: `user` with the necessary amendments from `default`.
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
314 If `user` is ``None`` then `default` is returned.
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
315
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
316 .. note:: The configuration in `user` is augmented/changed
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
317 **inplace**.
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
318
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
319 The configuration in `default` will be changed **inplace**
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
320 when filtering out comments (which is the default).
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
321
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
322 From http://stackoverflow.com/questions/823196/yaml-merge-in-python
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
323
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
324 """
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
325 if user is None:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
326 if filter_comments:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
327 _filter_comments(default)
13
24ba462b9b4b Return the `default' argument when the given `user' argument is `None' and when it is the first call on merge
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 11
diff changeset
328 return default
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
329 if filter_comments:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
330 _filter_comments(user)
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
331 if isinstance(user, dict) and isinstance(default, dict):
9
6835a5663008 FIX: Style
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 8
diff changeset
332 for k, v in default.items():
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
333 if filter_comments and _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
334 continue
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
335 if k not in user:
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
336 user[k] = v
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
337 else:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
338 user[k] = _merge(user[k], v, filter_comments)
8
7090c295c940 Two differend tree merge function implementations: not yet finished
Franz Glasner <hg@dom66.de>
parents: 5
diff changeset
339 return user
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
340
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
341
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
342 def _merge(user, default, filter_comments):
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
343 """Recursion helper for :meth:`merge`
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
344
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
345 """
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
346 if isinstance(user, dict) and isinstance(default, dict):
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
347 for k, v in default.items():
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
348 if filter_comments and _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
349 continue
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
350 if k not in user:
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
351 user[k] = v
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
352 else:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
353 user[k] = _merge(user[k], v, filter_comments)
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
354 return user
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
355
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
356
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
357 def safe_merge(user, default, filter_comments=True):
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
358 """A more safe version of :func:`merge` that makes deep copies of
13
24ba462b9b4b Return the `default' argument when the given `user' argument is `None' and when it is the first call on merge
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 11
diff changeset
359 the returned container objects.
24ba462b9b4b Return the `default' argument when the given `user' argument is `None' and when it is the first call on merge
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 11
diff changeset
360
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
361 Contrary to :func:`merge` no given argument is ever changed
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
362 inplace. Every object from `default` is decoupled from the result
165
6ca90e80f4f4 FIX: Docu: wording
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
363 -- so changing the `default` configuration later does not propagate
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
364 into a merged configuration later.
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
365
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
366 """
110
29cf359ddf4d Remove the "_first" parameter from "merge" and "safe_merge" by splitting into two functions
Franz Glasner <hg@dom66.de>
parents: 108
diff changeset
367 if user is None:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
368 if filter_comments:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
369 _filter_comments(default)
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
370 return copy.deepcopy(default)
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
371 user = copy.deepcopy(user)
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
372 if filter_comments:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
373 _filter_comments(user)
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
374 if isinstance(user, dict) and isinstance(default, dict):
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
375 for k, v in default.items():
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
376 if filter_comments and _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
377 continue
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
378 if k not in user:
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
379 user[k] = copy.deepcopy(v)
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
380 else:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
381 user[k] = _safe_merge(user[k], v, filter_comments)
10
58af59d5af40 A "safe_merge" that makes (shallow) copies instead of directly manipulating given containers
Franz Glasner <f.glasner@feldmann-mg.com>
parents: 9
diff changeset
382 return user
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
383
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
384
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
385 def _safe_merge(user, default, filter_comments):
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
386 """Recursion helper for :meth:`safe_merge`
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
387
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
388 """
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
389 if isinstance(user, dict) and isinstance(default, dict):
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
390 for k, v in default.items():
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
391 if filter_comments and _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
392 continue
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
393 if k not in user:
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
394 user[k] = copy.deepcopy(v)
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
395 else:
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
396 user[k] = _safe_merge(user[k], v, filter_comments)
111
d51a18e5b0e3 Reimplement configmix.safe_merge() do to a deepcopy of all source configurations when merging.
Franz Glasner <hg@dom66.de>
parents: 110
diff changeset
397 return user
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
398
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
399
144
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
400 def _filter_comments(d):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
401 """Recursively filter comments keys in the dict `d`.
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
402
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
403 Comment keys are keys that start with any of the items in
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
404 :data:`COMMENTS`.
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
405
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
406 """
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
407 if not isinstance(d, dict):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
408 return
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
409 # use a copy of the keys because we change `d` while iterating
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
410 for k in list(d.keys()):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
411 if _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
412 del d[k]
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
413 else:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
414 if isinstance(d[k], dict):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
415 _filter_comments(d[k])
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
416
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
417
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
418 def _is_comment(k):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
419 for i in COMMENTS:
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
420 if k.startswith(i):
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
421 return True
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
422 return False
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
423
7e6ec99d5ff5 Allow comments as keys and filter them by default
Franz Glasner <hg@dom66.de>
parents: 141
diff changeset
424
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
425 #
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
426 # Init loader defaults: mode->loader and extension->mode
139
c87b0dc54e1d Allow custom configuration filename extensions and custom loaders that can handle custom configuration file syntax styles
Franz Glasner <hg@dom66.de>
parents: 138
diff changeset
427 #
178
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
428 _mode_loaders.update(DEFAULT_MODE_LOADERS)
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
429 for _pattern, _mode in DEFAULT_EXTENSIONS:
eeb3ed104ea1 Begin refactoring the associations between filename extensions and loader functions:
Franz Glasner <fzglas.hg@dom66.de>
parents: 177
diff changeset
430 set_loader(_pattern, _mode)