1 """Common utility functions
4 import errno, 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')
179 editor = os.environ.get('EDITOR', 'vi')
180 editor += ' %s' % filename
182 out.start('Invoking the editor: "%s"' % editor)
183 err = os.system(editor)
185 raise EditorException, 'editor failed, exit code: %d' % err
188 def edit_string(s, filename):
189 f = file(filename, 'w')
192 call_editor(filename)
199 def patch_name_from_msg(msg):
200 """Return a string to be used as a patch name. This is generated
201 from the top line of the string passed as argument."""
205 name_len = config.get('stgit.namelength')
209 subject_line = msg.split('\n', 1)[0].lstrip().lower()
210 return re.sub('[\W]+', '-', subject_line).strip('-')[:name_len]
212 def make_patch_name(msg, unacceptable, default_name = 'patch'):
213 """Return a patch name generated from the given commit message,
214 guaranteed to make unacceptable(name) be false. If the commit
215 message is empty, base the name on default_name instead."""
216 patchname = patch_name_from_msg(msg)
218 patchname = default_name
219 if unacceptable(patchname):
221 while unacceptable('%s-%d' % (patchname, suffix)):
223 patchname = '%s-%d' % (patchname, suffix)
226 # any and all functions are builtin in Python 2.5 and higher, but not
228 if not 'any' in dir(__builtins__):
234 if not 'all' in dir(__builtins__):
241 def add_sign_line(desc, sign_str, name, email):
244 sign_str = '%s: %s <%s>' % (sign_str, name, email)
248 if not any(s in desc for s in ['\nSigned-off-by:', '\nAcked-by:']):
250 return '%s\n%s\n' % (desc, sign_str)
252 def parse_name_email(address):
253 """Return a tuple consisting of the name and email parsed from a
254 standard 'name <email>' or 'email (name)' string."""
255 address = re.sub(r'[\\"]', r'\\\g<0>', address)
256 str_list = re.findall(r'^(.*)\s*<(.*)>\s*$', address)
258 str_list = re.findall(r'^(.*)\s*\((.*)\)\s*$', address)
261 return (str_list[0][1], str_list[0][0])
264 def parse_name_email_date(address):
265 """Return a tuple consisting of the name, email and date parsed
266 from a 'name <email> date' string."""
267 address = re.sub(r'[\\"]', r'\\\g<0>', address)
268 str_list = re.findall('^(.*)\s*<(.*)>\s*(.*)\s*$', address)
274 STGIT_SUCCESS = 0 # everything's OK
275 STGIT_GENERAL_ERROR = 1 # seems to be non-command-specific error
276 STGIT_COMMAND_ERROR = 2 # seems to be a command that failed
277 STGIT_CONFLICT = 3 # merge conflict, otherwise OK
278 STGIT_BUG_ERROR = 4 # a bug in StGit
280 def add_dict(d1, d2):
281 """Return a new dict with the contents of both d1 and d2. In case of
282 conflicting mappings, d2 takes precedence."""