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XML parsing

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# 1  
Old 10-23-2017
XML parsing
I have an xml file where the format looks like below

Code:
<SESSIONCOMPONENT REFOBJECTNAME ="pre_session_command" REUSABLE ="NO" TYPE ="Pre-session command">
                <TASK DESCRIPTION ="" NAME ="pre_session_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="NO"/>
                </TASK>
     </SESSIONCOMPONENT>

            <SESSIONCOMPONENT REFOBJECTNAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Post-session success command">
                <TASK DESCRIPTION ="" NAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Fail task if any command fails" VALUE ="NO"/>
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="NO"/>
                </TASK>

The ask is to replace the VALUE tag with the following strings that i will generate on the fly

Code:
STR1="/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename"
STR2="scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename"

The Output will be like

Code:
<SESSIONCOMPONENT REFOBJECTNAME ="pre_session_command" REUSABLE ="NO" TYPE ="Pre-session command">
                <TASK DESCRIPTION ="" NAME ="pre_session_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename"/>
                </TASK>
     </SESSIONCOMPONENT>

            <SESSIONCOMPONENT REFOBJECTNAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Post-session success command">
                <TASK DESCRIPTION ="" NAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Fail task if any command fails" VALUE ="NO"/>
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename"/>
                </TASK>


Im trying to use awk but unable to find the correct use of gsub in this .. any help wil be appreciated
HTML Code:
 awk -F "[><]" '/VALUEPAIR EXECORDER/{gsub(/VALUE*/,VALUE ="/ac ")}1'  wf_DB2zOS_DB2PAAA_TCHK_ACCT_MASTER.xml
Last edited by r_t_1601; 10-24-2017 at 02:36 AM.. Reason: Updated the VALUE from NULL to NO
# 2  
Old 10-23-2017
In your awk gsub attempt, the quoting of the replacement needs to be corrected:
Code:
awk -F "[><]" '/VALUEPAIR EXECORDER/{gsub(/VALUE*/,"VALUE =\"/ac \"")}1'  file

Last edited by RudiC; 10-23-2017 at 06:39 AM..
# 3  
Old 10-23-2017
Thanks Rudi however im unable to using variable replacement inside gsub

Code:
 awk -F "[><]" '/VALUEPAIR EXECORDER/{gsub(/VALUE =\"*\"/,VALUE = $STR1)}1'  wf_DB2zOS_DB2PAAA_TCHK_ACCT_MASTER.xml

thanks
# 4  
Old 10-23-2017
Quote:
Originally Posted by r_t_1601
Thanks Rudi however im unable to using variable replacement inside gsub
Code:
 awk -F "[><]" '/VALUEPAIR EXECORDER/{gsub(/VALUE =\"*\"/,VALUE = $STR1)}1'  wf_DB2zOS_DB2PAAA_TCHK_ACCT_MASTER.xml

thanks
Hello r_t_1601,

Not sure how you want to substitute the string VALUE with multiple strings as it is present in many places, following is the example of using one variable and doing substitution with VALUE string.
Code:
awk -v STR1='/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename'  -v STR2="scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename" '/VALUEPAIR EXECORDER/{sub("VALUE =","&"STR1)} 1'   Input_file

Above is only an example how to use variables in awk, in case you have more requirements then kindly mention them clearly.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
r_t_1601
# 5  
Old 10-23-2017
Try
Code:
awk -v RPST="$STR1|$STR2" 'BEGIN {n = split (RPST, RP, "|")} /VALUEPAIR EXECORDER/ {T=$NF; sub (/""/, "\"" RP[++CNT] "\"", T); sub ($NF, T)} 1'   file

but make sure the strings STR1 & 2 have been assigned using single (NOT double) quotes so the $ sign are being preserved.
This User Gave Thanks to RudiC For This Post:
r_t_1601
# 6  
Old 10-24-2017
Hi Ravinder thanks for the response.

Code:
STR1="/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename"
STR2="scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename"

The STR1 should be substituted where the SESSIONCOMPONENT REFOBJECTNAME ="pre_session_command
Code:
<SESSIONCOMPONENT REFOBJECTNAME ="pre_session_command" REUSABLE ="NO" TYPE ="Pre-session command">
                <TASK DESCRIPTION ="" NAME ="pre_session_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="STR1"/>
                </TASK>
     </SESSIONCOMPONENT>

and STR2 should substitute where SESSIONCOMPONENT REFOBJECTNAME ="post_session_success_command"
Code:
<SESSIONCOMPONENT REFOBJECTNAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Post-session success command">
                <TASK DESCRIPTION ="" NAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Fail task if any command fails" VALUE ="NO"/>
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="STR2"/>
                </TASK>
     </SESSIONCOMPONENT>

just stating the initial value would be "NO" instead of "null" in VALUE
Last edited by r_t_1601; 10-24-2017 at 02:37 AM..
# 7  
Old 10-24-2017
Hello r_t_1601,

Could you please try following and let me know if this helps you.
Code:
awk -v STR1='/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename'  -v SRT2='scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename'  '
/pre_session_command/{
  val=1
}
val==1 && /VALUEPAIR EXECORDER/{
  sub(/VALUE =[^/]*/,"VALUE =")
  sub("VALUE =","&\"" STR1 "\"");
  val=""
}
/post_session_success_command/{
  val=2
}
val==2 && /VALUEPAIR EXECORDER/{
  sub(/VALUE =[^/]*/,"VALUE =")
  sub("VALUE =","&\"" SRT2 "\"");
  val=""
}
1
'  Input_file

Output will be as follows.
Code:
<SESSIONCOMPONENT REFOBJECTNAME ="pre_session_command" REUSABLE ="NO" TYPE ="Pre-session command">
                <TASK DESCRIPTION ="" NAME ="pre_session_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="/scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Paramprefilename"/>
                </TASK>
     </SESSIONCOMPONENT>
             <SESSIONCOMPONENT REFOBJECTNAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Post-session success command">
                <TASK DESCRIPTION ="" NAME ="post_session_success_command" REUSABLE ="NO" TYPE ="Command" VERSIONNUMBER ="1">
                    <ATTRIBUTE NAME ="Fail task if any command fails" VALUE ="NO"/>
                    <ATTRIBUTE NAME ="Recovery Strategy" VALUE ="Fail task and continue workflow"/>
                    <VALUEPAIR EXECORDER ="1" NAME ="Command1" REVERSEASSIGNMENT ="NO" VALUE ="scripts/waitForDummyFilePDS.sh -f$Paramdummyfile -H$ParamIP -e$Paramemail -j$Parampostfilename"/>
                </TASK>

Let me know if you have any queries on same.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
r_t_1601
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