1 """Common utility functions
4 import errno, optparse, os, os.path, re, sys
5 from stgit.exception import *
6 from stgit.config import config
7 from stgit.out import *
10 Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com>
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License version 2 as
14 published by the Free Software Foundation.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 def mkdir_file(filename, mode):
27 """Opens filename with the given mode, creating the directory it's
28 in if it doesn't already exist."""
29 create_dirs(os.path.dirname(filename))
30 return file(filename, mode)
32 def read_strings(filename):
33 """Reads the lines from a file
35 f = file(filename, 'r')
36 lines = [line.strip() for line in f.readlines()]
40 def read_string(filename, multiline = False):
41 """Reads the first line from a file
43 f = file(filename, 'r')
47 result = f.readline().strip()
51 def write_strings(filename, lines):
52 """Write 'lines' sequence to file
54 f = file(filename, 'w+')
55 f.writelines([line + '\n' for line in lines])
58 def write_string(filename, line, multiline = False):
59 """Writes 'line' to file and truncates it
61 f = mkdir_file(filename, 'w+')
68 def append_strings(filename, lines):
69 """Appends 'lines' sequence to file
71 f = mkdir_file(filename, 'a+')
76 def append_string(filename, line):
77 """Appends 'line' to file
79 f = mkdir_file(filename, 'a+')
83 def insert_string(filename, line):
84 """Inserts 'line' at the beginning of the file
86 f = mkdir_file(filename, 'r+')
88 f.seek(0); f.truncate()
93 def create_empty_file(name):
94 """Creates an empty file
96 mkdir_file(name, 'w+').close()
98 def list_files_and_dirs(path):
99 """Return the sets of filenames and directory names in a
102 for fd in os.listdir(path):
103 full_fd = os.path.join(path, fd)
104 if os.path.isfile(full_fd):
106 elif os.path.isdir(full_fd):
110 def walk_tree(basedir):
111 """Starting in the given directory, iterate through all its
112 subdirectories. For each subdirectory, yield the name of the
113 subdirectory (relative to the base directory), the list of
114 filenames in the subdirectory, and the list of directory names in
118 subdir = subdirs.pop()
119 files, dirs = list_files_and_dirs(os.path.join(basedir, subdir))
121 subdirs.append(os.path.join(subdir, d))
122 yield subdir, files, dirs
124 def strip_prefix(prefix, string):
125 """Return string, without the prefix. Blow up if string doesn't
126 start with prefix."""
127 assert string.startswith(prefix)
128 return string[len(prefix):]
130 def strip_suffix(suffix, string):
131 """Return string, without the suffix. Blow up if string doesn't
133 assert string.endswith(suffix)
134 return string[:-len(suffix)]
136 def remove_file_and_dirs(basedir, file):
137 """Remove join(basedir, file), and then remove the directory it
138 was in if empty, and try the same with its parent, until we find a
139 nonempty directory or reach basedir."""
140 os.remove(os.path.join(basedir, file))
142 os.removedirs(os.path.join(basedir, os.path.dirname(file)))
144 # file's parent dir may not be empty after removal
147 def create_dirs(directory):
148 """Create the given directory, if the path doesn't already exist."""
149 if directory and not os.path.isdir(directory):
150 create_dirs(os.path.dirname(directory))
154 if e.errno != errno.EEXIST:
157 def rename(basedir, file1, file2):
158 """Rename join(basedir, file1) to join(basedir, file2), not
159 leaving any empty directories behind and creating any directories
161 full_file2 = os.path.join(basedir, file2)
162 create_dirs(os.path.dirname(full_file2))
163 os.rename(os.path.join(basedir, file1), full_file2)
165 os.removedirs(os.path.join(basedir, os.path.dirname(file1)))
167 # file1's parent dir may not be empty after move
170 class EditorException(StgException):
173 def call_editor(filename):
174 """Run the editor on the specified filename."""
177 editor = config.get('stgit.editor')
180 elif 'EDITOR' in os.environ:
181 editor = os.environ['EDITOR']
184 editor += ' %s' % filename
186 out.start('Invoking the editor: "%s"' % editor)
187 err = os.system(editor)
189 raise EditorException, 'editor failed, exit code: %d' % err
192 def patch_name_from_msg(msg):
193 """Return a string to be used as a patch name. This is generated
194 from the top line of the string passed as argument."""
198 name_len = config.get('stgit.namelength')
202 subject_line = msg.split('\n', 1)[0].lstrip().lower()
203 return re.sub('[\W]+', '-', subject_line).strip('-')[:name_len]
205 def make_patch_name(msg, unacceptable, default_name = 'patch'):
206 """Return a patch name generated from the given commit message,
207 guaranteed to make unacceptable(name) be false. If the commit
208 message is empty, base the name on default_name instead."""
209 patchname = patch_name_from_msg(msg)
211 patchname = default_name
212 if unacceptable(patchname):
214 while unacceptable('%s-%d' % (patchname, suffix)):
216 patchname = '%s-%d' % (patchname, suffix)
219 # any and all functions are builtin in Python 2.5 and higher, but not
221 if not 'any' in dir(__builtins__):
227 if not 'all' in dir(__builtins__):
234 def make_sign_options():
235 def callback(option, opt_str, value, parser, sign_str):
236 if parser.values.sign_str not in [None, sign_str]:
237 raise optparse.OptionValueError(
238 '--ack and --sign were both specified')
239 parser.values.sign_str = sign_str
240 return [optparse.make_option('--sign', action = 'callback',
241 callback = callback, dest = 'sign_str',
242 callback_args = ('Signed-off-by',),
243 help = 'add Signed-off-by line'),
244 optparse.make_option('--ack', action = 'callback',
245 callback = callback, dest = 'sign_str',
246 callback_args = ('Acked-by',),
247 help = 'add Acked-by line')]
249 def add_sign_line(desc, sign_str, name, email):
252 sign_str = '%s: %s <%s>' % (sign_str, name, email)
256 if not any(s in desc for s in ['\nSigned-off-by:', '\nAcked-by:']):
258 return '%s\n%s\n' % (desc, sign_str)
260 def make_message_options():
262 if parser.values.message != None:
263 raise optparse.OptionValueError(
264 'Cannot give more than one --message or --file')
265 def no_combine(parser):
266 if (parser.values.message != None
267 and parser.values.save_template != None):
268 raise optparse.OptionValueError(
269 'Cannot give both --message/--file and --save-template')
270 def msg_callback(option, opt_str, value, parser):
272 parser.values.message = value
274 def file_callback(option, opt_str, value, parser):
277 parser.values.message = sys.stdin.read()
280 parser.values.message = f.read()
283 def templ_callback(option, opt_str, value, parser):
289 f = file(value, 'w+')
292 parser.values.save_template = w
294 m = optparse.make_option
295 return [m('-m', '--message', action = 'callback', callback = msg_callback,
296 dest = 'message', type = 'string',
297 help = 'use MESSAGE instead of invoking the editor'),
298 m('-f', '--file', action = 'callback', callback = file_callback,
299 dest = 'message', type = 'string', metavar = 'FILE',
300 help = 'use FILE instead of invoking the editor'),
301 m('--save-template', action = 'callback', callback = templ_callback,
302 metavar = 'FILE', dest = 'save_template', type = 'string',
303 help = 'save the message template to FILE and exit')]
306 STGIT_SUCCESS = 0 # everything's OK
307 STGIT_GENERAL_ERROR = 1 # seems to be non-command-specific error
308 STGIT_COMMAND_ERROR = 2 # seems to be a command that failed
310 def strip_leading(prefix, s):
311 """Strip leading prefix from a string. Blow up if the prefix isn't
313 assert s.startswith(prefix)
314 return s[len(prefix):]
316 def add_dict(d1, d2):
317 """Return a new dict with the contents of both d1 and d2. In case of
318 conflicting mappings, d2 takes precedence."""