[people/teissler/ipfire-2.x.git] / src / scripts / readhash

#!/bin/sh
#
# This script reads in variables from a config file, and produces a list of
# commands to run to set these as shell environment variables, it is
# intended to be used as follows:
#
#   eval $(readhash /var/ipfire/main/settings)
#

# shell variables must consist of alphanumeric characters and underscores,
# and begin with an alphabetic character or underscore.
VARNAME='[A-Za-z_][A-Za-z0-9_]*'

# For the assigned value we only accept a limited number of characters - none
# of which are shell metachars
VARCHARS='A-Za-z0-9=/,.:%_@#+-'
VARVAL="[${VARCHARS}]*"

sed -ne "s/\(${VARNAME}\)=\(${VARVAL}\)$/\1=\2/p" $1

# Accept space only if it's quoted
sed -ne "s/\(${VARNAME}\)=\('[ ${VARCHARS}]*'\)$/\1=\2/p" $1
Commit	Line	Data
cd1a2927 MT	1	#!/bin/sh
	2	#
	3	# This script reads in variables from a config file, and produces a list of
	4	# commands to run to set these as shell environment variables, it is
	5	# intended to be used as follows:
	6	#
ee4fdd07	7	# eval $(readhash /var/ipfire/main/settings)
cd1a2927 MT	8	#
	9
	10	# shell variables must consist of alphanumeric characters and underscores,
	11	# and begin with an alphabetic character or underscore.
211947fa	12	VARNAME='[A-Za-z_][A-Za-z0-9_]*'
cd1a2927 MT	13
	14	# For the assigned value we only accept a limited number of characters - none
	15	# of which are shell metachars
37dd0cd2	16	VARCHARS='A-Za-z0-9=/,.:%_@#+-'
cd1a2927 MT	17	VARVAL="[${VARCHARS}]*"
cd1a2927 MT	18
a393e0ba	19	sed -ne "s/\(${VARNAME}\)=\(${VARVAL}\)$/\1=\2/p" $1
cd1a2927 MT	20
cd1a2927 MT	21	# Accept space only if it's quoted
a393e0ba	22	sed -ne "s/\(${VARNAME}\)=\('[ ${VARCHARS}]*'\)$/\1=\2/p" $1