summaryrefslogtreecommitdiff
path: root/tools/patman/settings.py
blob: 21e8fc41a98ffdb1cdde30adf1687b7e32b7108f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2011 The Chromium OS Authors.
#

try:
    import configparser as ConfigParser
except:
    import ConfigParser

import os
import re

import command
import gitutil
import tools

"""Default settings per-project.

These are used by _ProjectConfigParser.  Settings names should match
the "dest" of the option parser from patman.py.
"""
_default_settings = {
    "u-boot": {},
    "linux": {
        "process_tags": "False",
    }
}

class _ProjectConfigParser(ConfigParser.SafeConfigParser):
    """ConfigParser that handles projects.

    There are two main goals of this class:
    - Load project-specific default settings.
    - Merge general default settings/aliases with project-specific ones.

    # Sample config used for tests below...
    >>> from io import StringIO
    >>> sample_config = '''
    ... [alias]
    ... me: Peter P. <likesspiders@example.com>
    ... enemies: Evil <evil@example.com>
    ...
    ... [sm_alias]
    ... enemies: Green G. <ugly@example.com>
    ...
    ... [sm2_alias]
    ... enemies: Doc O. <pus@example.com>
    ...
    ... [settings]
    ... am_hero: True
    ... '''

    # Check to make sure that bogus project gets general alias.
    >>> config = _ProjectConfigParser("zzz")
    >>> config.readfp(StringIO(sample_config))
    >>> str(config.get("alias", "enemies"))
    'Evil <evil@example.com>'

    # Check to make sure that alias gets overridden by project.
    >>> config = _ProjectConfigParser("sm")
    >>> config.readfp(StringIO(sample_config))
    >>> str(config.get("alias", "enemies"))
    'Green G. <ugly@example.com>'

    # Check to make sure that settings get merged with project.
    >>> config = _ProjectConfigParser("linux")
    >>> config.readfp(StringIO(sample_config))
    >>> sorted((str(a), str(b)) for (a, b) in config.items("settings"))
    [('am_hero', 'True'), ('process_tags', 'False')]

    # Check to make sure that settings works with unknown project.
    >>> config = _ProjectConfigParser("unknown")
    >>> config.readfp(StringIO(sample_config))
    >>> sorted((str(a), str(b)) for (a, b) in config.items("settings"))
    [('am_hero', 'True')]
    """
    def __init__(self, project_name):
        """Construct _ProjectConfigParser.

        In addition to standard SafeConfigParser initialization, this also loads
        project defaults.

        Args:
            project_name: The name of the project.
        """
        self._project_name = project_name
        ConfigParser.SafeConfigParser.__init__(self)

        # Update the project settings in the config based on
        # the _default_settings global.
        project_settings = "%s_settings" % project_name
        if not self.has_section(project_settings):
            self.add_section(project_settings)
        project_defaults = _default_settings.get(project_name, {})
        for setting_name, setting_value in project_defaults.items():
            self.set(project_settings, setting_name, setting_value)

    def get(self, section, option, *args, **kwargs):
        """Extend SafeConfigParser to try project_section before section.

        Args:
            See SafeConfigParser.
        Returns:
            See SafeConfigParser.
        """
        try:
            val = ConfigParser.SafeConfigParser.get(
                self, "%s_%s" % (self._project_name, section), option,
                *args, **kwargs
            )
        except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
            val = ConfigParser.SafeConfigParser.get(
                self, section, option, *args, **kwargs
            )
        return tools.ToUnicode(val)

    def items(self, section, *args, **kwargs):
        """Extend SafeConfigParser to add project_section to section.

        Args:
            See SafeConfigParser.
        Returns:
            See SafeConfigParser.
        """
        project_items = []
        has_project_section = False
        top_items = []

        # Get items from the project section
        try:
            project_items = ConfigParser.SafeConfigParser.items(
                self, "%s_%s" % (self._project_name, section), *args, **kwargs
            )
            has_project_section = True
        except ConfigParser.NoSectionError:
            pass

        # Get top-level items
        try:
            top_items = ConfigParser.SafeConfigParser.items(
                self, section, *args, **kwargs
            )
        except ConfigParser.NoSectionError:
            # If neither section exists raise the error on...
            if not has_project_section:
                raise

        item_dict = dict(top_items)
        item_dict.update(project_items)
        return {(tools.ToUnicode(item), tools.ToUnicode(val))
                for item, val in item_dict.items()}

def ReadGitAliases(fname):
    """Read a git alias file. This is in the form used by git:

    alias uboot  u-boot@lists.denx.de
    alias wd     Wolfgang Denk <wd@denx.de>

    Args:
        fname: Filename to read
    """
    try:
        fd = open(fname, 'r', encoding='utf-8')
    except IOError:
        print("Warning: Cannot find alias file '%s'" % fname)
        return

    re_line = re.compile('alias\s+(\S+)\s+(.*)')
    for line in fd.readlines():
        line = line.strip()
        if not line or line[0] == '#':
            continue

        m = re_line.match(line)
        if not m:
            print("Warning: Alias file line '%s' not understood" % line)
            continue

        list = alias.get(m.group(1), [])
        for item in m.group(2).split(','):
            item = item.strip()
            if item:
                list.append(item)
        alias[m.group(1)] = list

    fd.close()

def CreatePatmanConfigFile(config_fname):
    """Creates a config file under $(HOME)/.patman if it can't find one.

    Args:
        config_fname: Default config filename i.e., $(HOME)/.patman

    Returns:
        None
    """
    name = gitutil.GetDefaultUserName()
    if name == None:
        name = raw_input("Enter name: ")

    email = gitutil.GetDefaultUserEmail()

    if email == None:
        email = raw_input("Enter email: ")

    try:
        f = open(config_fname, 'w')
    except IOError:
        print("Couldn't create patman config file\n")
        raise

    print('''[alias]
me: %s <%s>

[bounces]
nxp = Zhikang Zhang <zhikang.zhang@nxp.com>
''' % (name, email), file=f)
    f.close();

def _UpdateDefaults(parser, config):
    """Update the given OptionParser defaults based on config.

    We'll walk through all of the settings from the parser
    For each setting we'll look for a default in the option parser.
    If it's found we'll update the option parser default.

    The idea here is that the .patman file should be able to update
    defaults but that command line flags should still have the final
    say.

    Args:
        parser: An instance of an OptionParser whose defaults will be
            updated.
        config: An instance of _ProjectConfigParser that we will query
            for settings.
    """
    defaults = parser.get_default_values()
    for name, val in config.items('settings'):
        if hasattr(defaults, name):
            default_val = getattr(defaults, name)
            if isinstance(default_val, bool):
                val = config.getboolean('settings', name)
            elif isinstance(default_val, int):
                val = config.getint('settings', name)
            parser.set_default(name, val)
        else:
            print("WARNING: Unknown setting %s" % name)

def _ReadAliasFile(fname):
    """Read in the U-Boot git alias file if it exists.

    Args:
        fname: Filename to read.
    """
    if os.path.exists(fname):
        bad_line = None
        with open(fname, encoding='utf-8') as fd:
            linenum = 0
            for line in fd:
                linenum += 1
                line = line.strip()
                if not line or line.startswith('#'):
                    continue
                words = line.split(None, 2)
                if len(words) < 3 or words[0] != 'alias':
                    if not bad_line:
                        bad_line = "%s:%d:Invalid line '%s'" % (fname, linenum,
                                                                line)
                    continue
                alias[words[1]] = [s.strip() for s in words[2].split(',')]
        if bad_line:
            print(bad_line)

def _ReadBouncesFile(fname):
    """Read in the bounces file if it exists

    Args:
        fname: Filename to read.
    """
    if os.path.exists(fname):
        with open(fname) as fd:
            for line in fd:
                if line.startswith('#'):
                    continue
                bounces.add(line.strip())

def GetItems(config, section):
    """Get the items from a section of the config.

    Args:
        config: _ProjectConfigParser object containing settings
        section: name of section to retrieve

    Returns:
        List of (name, value) tuples for the section
    """
    try:
        return config.items(section)
    except ConfigParser.NoSectionError as e:
        return []
    except:
        raise

def Setup(parser, project_name, config_fname=''):
    """Set up the settings module by reading config files.

    Args:
        parser:         The parser to update
        project_name:   Name of project that we're working on; we'll look
            for sections named "project_section" as well.
        config_fname:   Config filename to read ('' for default)
    """
    # First read the git alias file if available
    _ReadAliasFile('doc/git-mailrc')
    config = _ProjectConfigParser(project_name)
    if config_fname == '':
        config_fname = '%s/.patman' % os.getenv('HOME')

    if not os.path.exists(config_fname):
        print("No config file found ~/.patman\nCreating one...\n")
        CreatePatmanConfigFile(config_fname)

    config.read(config_fname)

    for name, value in GetItems(config, 'alias'):
        alias[name] = value.split(',')

    _ReadBouncesFile('doc/bounces')
    for name, value in GetItems(config, 'bounces'):
        bounces.add(value)

    _UpdateDefaults(parser, config)

# These are the aliases we understand, indexed by alias. Each member is a list.
alias = {}
bounces = set()

if __name__ == "__main__":
    import doctest

    doctest.testmod()