blob: 5599f7ed36c2502fdb01aa99846d98563a0cde16 [file] [log] [blame]
"""Common utility functions
import errno, os, os.path, re, sys
from stgit.exception import *
from stgit.config import config
from stgit.out import *
__copyright__ = """
Copyright (C) 2005, Catalin Marinas <>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
def mkdir_file(filename, mode):
"""Opens filename with the given mode, creating the directory it's
in if it doesn't already exist."""
return file(filename, mode)
def read_strings(filename):
"""Reads the lines from a file
f = file(filename, 'r')
lines = [line.strip() for line in f.readlines()]
return lines
def read_string(filename, multiline = False):
"""Reads the first line from a file
f = file(filename, 'r')
if multiline:
result =
result = f.readline().strip()
return result
def write_strings(filename, lines):
"""Write 'lines' sequence to file
f = file(filename, 'w+')
f.writelines([line + '\n' for line in lines])
def write_string(filename, line, multiline = False):
"""Writes 'line' to file and truncates it
f = mkdir_file(filename, 'w+')
if multiline:
print >> f, line
def append_strings(filename, lines):
"""Appends 'lines' sequence to file
f = mkdir_file(filename, 'a+')
for line in lines:
print >> f, line
def append_string(filename, line):
"""Appends 'line' to file
f = mkdir_file(filename, 'a+')
print >> f, line
def insert_string(filename, line):
"""Inserts 'line' at the beginning of the file
f = mkdir_file(filename, 'r+')
lines = f.readlines(); f.truncate()
print >> f, line
def create_empty_file(name):
"""Creates an empty file
mkdir_file(name, 'w+').close()
def list_files_and_dirs(path):
"""Return the sets of filenames and directory names in a
files, dirs = [], []
for fd in os.listdir(path):
full_fd = os.path.join(path, fd)
if os.path.isfile(full_fd):
elif os.path.isdir(full_fd):
return files, dirs
def walk_tree(basedir):
"""Starting in the given directory, iterate through all its
subdirectories. For each subdirectory, yield the name of the
subdirectory (relative to the base directory), the list of
filenames in the subdirectory, and the list of directory names in
the subdirectory."""
subdirs = ['']
while subdirs:
subdir = subdirs.pop()
files, dirs = list_files_and_dirs(os.path.join(basedir, subdir))
for d in dirs:
subdirs.append(os.path.join(subdir, d))
yield subdir, files, dirs
def strip_prefix(prefix, string):
"""Return string, without the prefix. Blow up if string doesn't
start with prefix."""
assert string.startswith(prefix)
return string[len(prefix):]
def strip_suffix(suffix, string):
"""Return string, without the suffix. Blow up if string doesn't
end with suffix."""
assert string.endswith(suffix)
return string[:-len(suffix)]
def remove_file_and_dirs(basedir, file):
"""Remove join(basedir, file), and then remove the directory it
was in if empty, and try the same with its parent, until we find a
nonempty directory or reach basedir."""
os.remove(os.path.join(basedir, file))
os.removedirs(os.path.join(basedir, os.path.dirname(file)))
except OSError:
# file's parent dir may not be empty after removal
def create_dirs(directory):
"""Create the given directory, if the path doesn't already exist."""
if directory and not os.path.isdir(directory):
except OSError, e:
if e.errno != errno.EEXIST:
raise e
def rename(basedir, file1, file2):
"""Rename join(basedir, file1) to join(basedir, file2), not
leaving any empty directories behind and creating any directories
full_file2 = os.path.join(basedir, file2)
os.rename(os.path.join(basedir, file1), full_file2)
os.removedirs(os.path.join(basedir, os.path.dirname(file1)))
except OSError:
# file1's parent dir may not be empty after move
class EditorException(StgException):
def get_editor():
for editor in [os.environ.get('GIT_EDITOR'),
config.get('stgit.editor'), # legacy
if editor:
return editor
def call_editor(filename):
"""Run the editor on the specified filename."""
cmd = '%s %s' % (get_editor(), filename)
out.start('Invoking the editor: "%s"' % cmd)
err = os.system(cmd)
if err:
raise EditorException, 'editor failed, exit code: %d' % err
def edit_string(s, filename):
f = file(filename, 'w')
f = file(filename)
s =
return s
def append_comment(s, comment, separator = '---'):
return ('%s\n\n%s\nEverything following the line with "%s" will be'
' ignored\n\n%s' % (s, separator, separator, comment))
def strip_comment(s, separator = '---'):
return s[:s.index('\n%s\n' % separator)]
except ValueError:
return s
def find_patch_name(patchname, unacceptable):
"""Find a patch name which is acceptable."""
if unacceptable(patchname):
suffix = 0
while unacceptable('%s-%d' % (patchname, suffix)):
suffix += 1
patchname = '%s-%d' % (patchname, suffix)
return patchname
def patch_name_from_msg(msg):
"""Return a string to be used as a patch name. This is generated
from the top line of the string passed as argument."""
if not msg:
return None
name_len = config.getint('stgit.namelength')
if not name_len:
name_len = 30
subject_line = msg.split('\n', 1)[0].lstrip().lower()
words = re.sub('[\W]+', ' ', subject_line).split()
# use loop to avoid truncating the last name
name = words and words[0] or 'unknown'
for word in words[1:]:
new = name + '-' + word
if len(new) > name_len:
name = new
return name
def make_patch_name(msg, unacceptable, default_name = 'patch'):
"""Return a patch name generated from the given commit message,
guaranteed to make unacceptable(name) be false. If the commit
message is empty, base the name on default_name instead."""
patchname = patch_name_from_msg(msg)
if not patchname:
patchname = default_name
return find_patch_name(patchname, unacceptable)
# any and all functions are builtin in Python 2.5 and higher, but not
# in 2.4.
if not 'any' in dir(__builtins__):
def any(bools):
for b in bools:
if b:
return True
return False
if not 'all' in dir(__builtins__):
def all(bools):
for b in bools:
if not b:
return False
return True
def add_sign_line(desc, sign_str, name, email):
if not sign_str:
return desc
sign_str = '%s: %s <%s>' % (sign_str, name, email)
if sign_str in desc:
return desc
desc = desc.rstrip()
if not any(s in desc for s in ['\nSigned-off-by:', '\nAcked-by:']):
desc = desc + '\n'
return '%s\n%s\n' % (desc, sign_str)
def parse_name_email(address):
"""Return a tuple consisting of the name and email parsed from a
standard 'name <email>' or 'email (name)' string."""
address = re.sub(r'[\\"]', r'\\\g<0>', address)
str_list = re.findall(r'^(.*)\s*<(.*)>\s*$', address)
if not str_list:
str_list = re.findall(r'^(.*)\s*\((.*)\)\s*$', address)
if not str_list:
return None
return (str_list[0][1], str_list[0][0])
return str_list[0]
def parse_name_email_date(address):
"""Return a tuple consisting of the name, email and date parsed
from a 'name <email> date' string."""
address = re.sub(r'[\\"]', r'\\\g<0>', address)
str_list = re.findall('^(.*)\s*<(.*)>\s*(.*)\s*$', address)
if not str_list:
return None
return str_list[0]
# Exit codes.
STGIT_SUCCESS = 0 # everything's OK
STGIT_GENERAL_ERROR = 1 # seems to be non-command-specific error
STGIT_COMMAND_ERROR = 2 # seems to be a command that failed
STGIT_CONFLICT = 3 # merge conflict, otherwise OK
STGIT_BUG_ERROR = 4 # a bug in StGit
def add_dict(d1, d2):
"""Return a new dict with the contents of both d1 and d2. In case of
conflicting mappings, d2 takes precedence."""
d = dict(d1)
return d