new type to manage a block of text in a file

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>
This commit is contained in:
Steven Armstrong 2014-01-14 21:43:50 +01:00
parent 746d9ec12b
commit a787d2b27b
7 changed files with 229 additions and 0 deletions

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#!/bin/sh
# 2013 Steven Armstrong (steven-cdist at armstrong.cc)
file="$(cat "$__object/parameter/file" 2>/dev/null || echo "/$__object_id")"
# file does not exist, nothing we could do
[ -f "$file" ] || exit 0
prefix=$(cat "$__object/parameter/prefix" 2>/dev/null || echo "#cdist:__block/$__object_id")
suffix=$(cat "$__object/parameter/suffix" 2>/dev/null || echo "#/cdist:__block/$__object_id")
awk -v prefix="$prefix" -v suffix="$suffix" '{
if (index($0,prefix)) {
triggered=1
}
if (triggered) {
if (index($0,suffix)) {
triggered=0
}
print
}
}' "$file"

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#!/bin/sh
#
# 2013 Steven Armstrong (steven-cdist at armstrong.cc)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
file="$(cat "$__object/parameter/file" 2>/dev/null || echo "/$__object_id")"
state_should=$(cat "$__object/parameter/state")
prefix=$(cat "$__object/parameter/prefix" 2>/dev/null || echo "#cdist:__block/$__object_id")
suffix=$(cat "$__object/parameter/suffix" 2>/dev/null || echo "#/cdist:__block/$__object_id")
block="$__object/files/block"
if [ ! -s "$__object/explorer/block" ]; then
state_is='absent'
else
state_is=$(diff -q "$block" "$__object/explorer/block" >/dev/null \
&& echo present \
|| echo changed
)
fi
state_should="$(cat "$__object/parameter/state")"
if [ "$state_should" = "$state_is" ]; then
# Nothing to do, move along
exit 0
fi
remove_block() {
cat << DONE
tmpfile=\$(mktemp ${file}.cdist.XXXXXXXXXX)
# preserve ownership and permissions of existing file
if [ -f "$file" ]; then
cp -p "$file" "\$tmpfile"
fi
awk -v prefix="$prefix" -v suffix="$suffix" '
{
if (index(\$0,prefix)) {
triggered=1
}
if (triggered) {
if (index(\$0,suffix)) {
triggered=0
}
} else {
print
}
}' "$file" > "\$tmpfile"
mv -f "\$tmpfile" "$file"
DONE
}
case "$state_should" in
present)
if [ "$state_is" = "changed" ]; then
echo update >> "$__messages_out"
remove_block
else
echo add >> "$__messages_out"
fi
cat << DONE
cat >> "$file" << ${__type##*/}_DONE
$(cat "$block")
${__type##*/}_DONE
DONE
;;
absent)
echo remove >> "$__messages_out"
remove_block
;;
esac

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cdist-type__block(7)
====================
Steven Armstrong <steven-cdist--@--armstrong.cc>
NAME
----
cdist-type__block - Manage blocks of text in files
DESCRIPTION
-----------
Manage a block of text in an existing file.
The block is identified using the prefix and suffix parameters.
Everything between prefix and suffix is considered to be a managed block
of text.
REQUIRED PARAMETERS
-------------------
text::
the text to manage.
If text is '-' (dash), take what was written to stdin as the text.
OPTIONAL PARAMETERS
-------------------
file::
the file in which to manage the text block.
Defaults to object_id.
prefix::
the prefix to add before the text.
Defaults to #cdist:__block/$__object_id
suffix::
the prefix to add after the text.
Defaults to #/cdist:__block/$__object_id
state::
'present' or 'absent', defaults to 'present'
MESSAGES
--------
add::
block was added
update::
block was updated/changed
remove::
block was removed
EXAMPLES
--------
--------------------------------------------------------------------------------
# text from argument
__block /path/to/file \
--prefix '#start' \
--suffix '#end' \
--text 'some\nblock of\ntext'
# text from stdin
__block some-id \
--file /path/to/file \
--text - << DONE
here some block
of text
DONE
--------------------------------------------------------------------------------
SEE ALSO
--------
- cdist-type(7)
COPYING
-------
Copyright \(C) 2013 Steven Armstrong. Free use of this software is
granted under the terms of the GNU General Public License version 3 (GPLv3).

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#!/bin/sh
#
# 2013-2014 Steven Armstrong (steven-cdist at armstrong.cc)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
file="$(cat "$__object/parameter/file" 2>/dev/null || echo "/$__object_id")"
prefix=$(cat "$__object/parameter/prefix" 2>/dev/null || echo "#cdist:__block/$__object_id")
suffix=$(cat "$__object/parameter/suffix" 2>/dev/null || echo "#/cdist:__block/$__object_id")
text=$(cat "$__object/parameter/text")
mkdir "$__object/files"
# Generate text block for inclusion in file
block="$__object/files/block"
echo "$prefix" > "$block"
if [ "$text" = "-" ]; then
cat "$__object/stdin" >> "$block"
else
cat "$text" >> "$block"
fi
echo "$suffix" >> "$block"

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present

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file
prefix
state
suffix

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text