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Full Discussion: 'for LINE in $(cat file)' breaking at spaces, not just newlines
Top Forums Shell Programming and Scripting 'for LINE in $(cat file)' breaking at spaces, not just newlines Post 302548604 by Corona688 on Thursday 18th of August 2011 09:52:49 PM
Old 08-18-2011
Here's an awesomely ugly bash mini-xml parser:

Code:
#!/bin/bash

TAG=()
TPOS=0

# Turn <tag> <stuff> into < tag > \n < stuff >
sed 's#># >\n#g;s#<\(/*\)#<\1 #g;' > /tmp/$$

while read LINE
do
        [ -z "$LINE" ] && continue

	# set -- "<" "stuff" ">" makes $1="<", $2="stuff", $3=">" 
	set -- $LINE

	while [ "$#" -gt 0 ]
	do
		case "$1" in
		"<")	TAG[$((TPOS++))]=$2
			shift
			;;

		"</")	((TPOS--))
			shift
			;;

		">")	;;

		*)	OLDIFS="$IFS"	;	IFS="."
			echo "${TAG[*]}.$1"
			IFS="$OLDIFS"
		esac

		shift
	done
done < /tmp/$$

rm -f /tmp/$$

It's as full of holes as swiss-cheese but (almost) works for your test data. A "proper" parser probably isn't feasible.
Last edited by Corona688; 08-18-2011 at 10:59 PM..
 

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LEARN ABOUT SUNOS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The  following  default	shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
       /bin/tcsh,  /bin/zsh,  /sbin/jsh,  /sbin/sh,  /usr/bin/bash,  /usr/bin/csh,  /usr/bin/jsh,  /usr/bin/ksh,  /usr/bin/pfcsh,  /usr/bin/pfksh,
       /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.

       Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).

FILES

       /etc/shells	       lists shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.10							    4 Jun 2001								 shells(4)
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