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Merge branch 'lineinfile' of git://github.com/Tinche/ansible into lif

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Michael DeHaan 2013-03-29 21:39:57 -04:00
commit d69c13347b
1 changed files with 75 additions and 37 deletions
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lineinfile
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@ -25,7 +25,8 @@ DOCUMENTATION = """
---
module: lineinfile
author: Daniel Hokka Zakrisson
short_description: Ensure a particular line is in a file
short_description: Ensure a particular line is in a file, or replace an
existing line using a back-referenced regular expression.
description:
- This module will search a file for a line, and ensure that it is present or absent.
- This is primarily useful when you want to change a single line in a
@ -36,12 +37,13 @@ options:
required: true
aliases: [ name, destfile ]
description:
- The file to modify
- The file to modify.
regexp:
required: true
description:
- The regular expression to look for in the file. For C(state=present),
the pattern to replace. For C(state=absent), the pattern of the line
- The regular expression to look for in every line of the file. For
C(state=present), the pattern to replace if found; only the last line
found will be replaced. For C(state=absent), the pattern of the line
to remove. Uses Python regular expressions; see
U(http://docs.python.org/2/library/re.html).
state:
@ -55,7 +57,22 @@ options:
required: false
description:
- Required for C(state=present). The line to insert/replace into the
file. May contain backreferences.
file. If backrefs is set, may contain backreferences that will get
expanded with the regexp capture groups if the regexp matches. The
backreferences should be double escaped (see examples).
backrefs:
required: false
default: "no"
choices: [ "yes", "no" ]
version_added: 1.1
description:
- Used with C(state=present). If set, line can contain backreferences
(both positional and named) that will get populated if the regexp
matches. This flag changes the operation of the module slightly;
insertbefore) and insertafter will be ignored, and if the regexp
doesn't match anywhere in the file, the file will be left unchanged.
If the regexp does match, the last matching line will be replaced by
the expanded line parameter.
insertafter:
required: false
default: EOF
@ -63,6 +80,7 @@ options:
- Used with C(state=present). If specified, the line will be inserted
after the specified regular expression. A special value is
available; C(EOF) for inserting the line at the end of the file.
May not be used with backrefs.
choices: [ 'EOF', '*regex*' ]
insertbefore:
required: false
@ -70,8 +88,8 @@ options:
description:
- Used with C(state=present). If specified, the line will be inserted
before the specified regular expression. A value is available;
C(BOF) for inserting the line at the beginning of the
file.
C(BOF) for inserting the line at the beginning of the file.
May not be used with backrefs.
choices: [ 'BOF', '*regex*' ]
create:
required: false
@ -90,11 +108,11 @@ options:
get the original file back if you somehow clobbered it incorrectly.
others:
description:
- All arguments accepted by the M(file) module also work here.
- All arguments accepted by the M(file) module also work here.
required: false
"""
EXAMPLES = """
EXAMPLES = r"""
lineinfile: dest=/etc/selinux/config regexp=^SELINUX= line=SELINUX=disabled
lineinfile: dest=/etc/sudoers state=absent regexp="^%wheel"
@ -105,11 +123,11 @@ EXAMPLES = """
lineinfile: dest=/etc/services regexp="^# port for http" insertbefore="^www.*80/tcp" line="# port for http by default"
lineinfile: \\\"dest=/etc/sudoers state=present regexp='^%wheel' line ='%wheel ALL=(ALL) NOPASSWD: ALL'\\\"
lineinfile: dest=/etc/sudoers state=present regexp='^%wheel' line ='%wheel ALL=(ALL) NOPASSWD: ALL'
lineinfile dest=/tmp/grub.conf state=present regexp='^(splashimage=.*)$' line="#\\1"
lineinfile: dest=/opt/jboss-as/bin/standalone.conf state=present regexp='^(.*)Xms(\d+)m(.*)$' line='\\1Xms${xms}m\\3'
"""
def check_file_attrs(module, changed, message):
@ -121,9 +139,11 @@ def check_file_attrs(module, changed, message):
changed = True
message += "ownership, perms or SE linux context changed"
return [ message, changed ]
return message, changed
def present(module, dest, regexp, line, insertafter, insertbefore, create, backup):
def present(module, dest, regexp, line, insertafter, insertbefore, create,
backup, backrefs):
if os.path.isdir(dest):
module.fail_json(rc=256, msg='Destination %s is a directory !' % dest)
@ -142,10 +162,10 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create, backu
msg = ""
mre = re.compile(regexp)
if insertafter is not None and insertafter not in ('BOF', 'EOF'):
if insertafter not in (None, 'BOF', 'EOF'):
insre = re.compile(insertafter)
elif insertbefore is not None and insertbefore not in ('BOF'):
elif insertbefore not in (None, 'BOF'):
insre = re.compile(insertbefore)
else:
insre = None
@ -154,12 +174,12 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create, backu
# index[1] is the line num where insertafter/inserbefore has been found
index = [-1, -1]
m = None
for lineno in range(0, len(lines)):
match_found = mre.search(lines[lineno])
for lineno, cur_line in enumerate(lines):
match_found = mre.search(cur_line)
if match_found:
index[0] = lineno
m = match_found
elif insre is not None and insre.search(lines[lineno]):
elif insre is not None and insre.search(cur_line):
if insertafter:
# + 1 for the next line
index[1] = lineno + 1
@ -167,15 +187,24 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create, backu
# + 1 for the previous line
index[1] = lineno
msg = ''
changed = False
# Regexp matched a line in the file
if index[0] != -1:
if lines[index[0]] == m.expand(line) + os.linesep:
msg = ''
changed = False
if backrefs:
new_line = m.expand(line)
else:
lines[index[0]] = m.expand(line) + os.linesep
# Don't do backref expansion if not asked.
new_line = line
if lines[index[0]] != new_line + os.linesep:
lines[index[0]] = new_line + os.linesep
msg = 'line replaced'
changed = True
elif backrefs:
# Do absolutely nothing, since it's not safe generating the line
# without the regexp matching to populate the backrefs.
pass
# Add it to the beginning of the file
elif insertbefore == 'BOF' or insertafter == 'BOF':
lines.insert(0, line + os.linesep)
@ -188,11 +217,10 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create, backu
lines.append(line + os.linesep)
msg = 'line added'
changed = True
# Do nothing if regexp didn't match
# Do nothing if insert* didn't match
elif index[1] == -1:
msg = ''
changed = False
# insertafter/insertbefore= matched
pass
# insert* matched, but not the regexp
else:
lines.insert(index[1], line + os.linesep)
msg = 'line added'
@ -205,9 +233,10 @@ def present(module, dest, regexp, line, insertafter, insertbefore, create, backu
f.writelines(lines)
f.close()
[ msg, changed ] = check_file_attrs(module, changed, msg)
msg, changed = check_file_attrs(module, changed, msg)
module.exit_json(changed=changed, msg=msg)
def absent(module, dest, regexp, backup):
if os.path.isdir(dest):
@ -242,36 +271,46 @@ def absent(module, dest, regexp, backup):
if changed:
msg = "%s line(s) removed" % len(found)
[ msg, changed ] = check_file_attrs(module, changed, msg)
msg, changed = check_file_attrs(module, changed, msg)
module.exit_json(changed=changed, found=len(found), msg=msg)
def main():
module = AnsibleModule(
argument_spec = dict(
argument_spec=dict(
dest=dict(required=True, aliases=['name', 'destfile']),
state=dict(default='present', choices=['absent', 'present']),
regexp=dict(required=True),
line=dict(aliases=['value']),
insertafter=dict(default=None),
insertbefore=dict(default=None),
backrefs=dict(default=False, type='bool'),
create=dict(default=False, type='bool'),
backup=dict(default=False, type='bool'),
),
mutually_exclusive = [['insertbefore', 'insertafter']],
add_file_common_args = True,
supports_check_mode = True
mutually_exclusive=[['insertbefore', 'insertafter']],
add_file_common_args=True,
supports_check_mode=True
)
params = module.params
create = module.params['create']
backup = module.params['backup']
dest = os.path.expanduser(params['dest'])
backrefs = module.params['backrefs']
dest = os.path.expanduser(params['dest'])
if params['state'] == 'present':
if 'line' not in params:
module.fail_json(msg='line= is required with state=present')
# Deal with the insertafter default value manually, to avoid errors
# because of the mutually_exclusive mechanism.
ins_bef, ins_aft = params['insertbefore'], params['insertafter']
if ins_bef is None and ins_aft is None:
ins_aft = 'EOF'
present(module, dest, params['regexp'], params['line'],
params['insertafter'], params['insertbefore'], create, backup)
ins_aft, ins_bef, create, backup, backrefs)
else:
absent(module, dest, params['regexp'], backup)
@ -279,4 +318,3 @@ def main():
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()