grep or awk to extact xml from log based on search string

Question

I have a log file which has XMLs being logged. I need to search and extract all XML's that have a specific string in the any one of the nodes.

e.g. the log file will have mulitple xml's containing the search param.

randomlogentry1 randomlogentry2 Printing XML:<CreateDataABC> <Tag1>searchparam</Tag1> </CreateDataABC> randomlogentry3 randomlogentry4 randomlogentry5 Printing XML: <DataCreatedABC> <TagA>otherparam</TagA> <TagB>searchparam</TagB> <TagC>otherparam</TagC> </DataCreatedABC> randomlogentry6 randomlogentry7 

The expected output is the two XML's printed on console or written to seperate files.

XML1:

<CreateDataABC> <Tag1>searchparam</Tag1> </CreateDataABC> 

XML2:

<DataCreatedABC> <TagA>otherparam</TagA> <TagB>searchparam</TagB> <TagC>otherparam</TagC> </DataCreatedABC> 

The position of 'searchparam' in a XML is never fixed and the only constants are the 'ABC' string and the 'searchparam'.

I thought to use sed to extract between 2 line numbers for which I tried the following:

1. Search for the searchparam and identify line no.
2. Find the next occurence of ABC and get the line number,

I somehow cant seem to be able to find the previous occurence of ABC from a specific line!!

Has anyone done this before?

EDIT: Updated the example log format and expected output.

Answer 1

Try this:

Max=`grep -c "^Printing" file.xml` for count in `seq 1 $Max` do sed -nr '/Printing/H;//,/ABC/G;s/\n(\n[^\n]*){'$count'}$//p' file.xml | sed 's/Printing XML://' > $count.xml done 

Answer 2

Here is what I wrote, but I am sure there is a shorter and more elegant way of doing this.

searchstring=searchparam filename=test.log pattern1=ABC linenums=($(grep -n "${searchstring}" ${filename} | awk -F":" '{print $1}')) len=${#linenums[@]} for (( i=0; i<${len}; i++ )); do currentline=${linenums[$i]} relativeendlinearray=($(tail -n +${currentline} ${filename} | grep -n "${pattern1}" | awk -F":" '{print $1}')) actualendline=$(($currentline+${relativeendlinearray[0]}-1)) index=$currentline while [ $index -ne 0 ] do found=`sed "${index}q;d" ${filename} | grep "${pattern1}"` if [ -n "$found" ]; then actualstartline=$index break; fi index=$[$index-1] done if [ -n "$found" ]; then echo "" else echo "Log break detected, content across multiple files" fi echo "Start Line" ${actualstartline} echo "Current Line" ${currentline} echo "End Line" ${actualendline} sed -n "${actualstartline},${actualendline}p" ${filename} done