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Full Discussion: How to get array to not split at spaces?
Top Forums Shell Programming and Scripting How to get array to not split at spaces? Post 302127837 by jjinno on Thursday 19th of July 2007 06:47:41 PM
Old 07-19-2007
How to get array to not split at spaces?
I have been working on some code for a while, that will parse a log file, look for a specified time discrepancy between entries, and then print that line +/- n other lines out to a file...

Code:
#!/bin/bash

file=$1     # The input log file
maxTime=$2  # The time discrepancy to look for
n=$3        # The number of log entries to memorize
outFile=$4  # The output file

declare -a array

if [[ ! -n $1 || ! -n $2 || ! -n $3 || ! -n $4 ]]; then
    echo "ERROR"
    exit 128
fi

# This value is to print lines AFTER match
till=0

# This is a temp value to compare timestamps
previous=0

# egrep gets rid of all non-timestamped lines
egrep -n '^[0-9]' $file | \
while IFS="[.|:]" read number datetime min sec milli rest; do
    milliseconds=$(date -d "$datetime:$min:$sec" +%s)$milli
    line="$number:$datetime:$min:$sec.$milli|$rest"

    # Memorize the last n lines
    array=("${array[@]}" $line)
    if [[ ${#array[@]} -gt $n ]] ; then
        # get rid of overflow
        array=(${array[@]:1})
    fi

    # Calculate time difference on current and last line
    if [[ $previous -ne 0 ]] ; then
        (( difference = milliseconds - previous ))
    else
        difference=0
    fi

    if [[ $till -gt $number ]] ; then
        echo $line
    else
        if [[ $difference -gt $maxTime ]] ; then
            (( till = number + n ))

            # Print the history
            for item in ${array[@]}
            do
                echo $item
            done

            # Print the current match
            echo $line
        fi
    fi
    previous=$milliseconds
done

Can somebody tell me what is wrong here?

I think that the problem is that "$line" sometimes contains spaces in its text... which are then interpreted as separate array items... which fills up my buffer with parts of a single line instead of the memorized lines... but honestly I don't know what I can do about that
 

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LEARN ABOUT OPENSOLARIS

logadm.conf

logadm.conf(4)							   File Formats 						    logadm.conf(4)

NAME

       logadm.conf - configuration file for logadm command

SYNOPSIS

       /etc/logadm.conf

DESCRIPTION

       /etc/logadm.conf  is  the default configuration file for the log management tool logadm(1M). Comments are allowed using the pound character
       (#) and extend to the end of line. Each non-comment line has the form:

	 logname options

       where logname is the name of the entry and options are the default command line options for the logadm command. The name of the	entry  may
       be  the	same  as  the  name of the log file, or a log file name may be given in the options section of the entry. Long lines may be folded
       using a backslash followed by a newline to continue an entry on the next line. Single or double quotes may be used  to  protect	spaces	or
       alternate-style quotes in strings.

       The  preferred  method  for  changing  /etc/logadm.conf	is to use the -V, -w, and -r options to the logadm(1M) command, which allow you to
       lookup an entry, write an entry, or remove an entry from /etc/logadm.conf.

       A full description of how and when /etc/logadm.conf is used and sample entries are found in logadm(1M).

       By default, logadm(1M) works in GMT. Therefore, all entries in /etc/logadm.conf will have a GMT timestamp. Users can use the -l	option	to
       set logadm to local time.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsr			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       logadm(1M), attributes(5)

SunOS 5.11							    23 May 2007 						    logadm.conf(4)
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