XML: parsing of the Google contacts XML file


 
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# 1  
Old 12-23-2012
XML: parsing of the Google contacts XML file

I am trying to parse the XML Google contact file using tools like xmllint and I even dived into the XSL Style Sheets using xsltproc but I get nowhere.

I can not supply any sample file as it contains private data but you can download your own contacts using this script:
Code:
#!/bin/sh

# imports Google Contacts
# imported data is stored in contacts.xml file (current directory)

# You will need curl and xmllint tools

LOGIN="your.login@gmail.com"
PASSW="your_passw"

AUTH=$(curl --silent https://www.google.com/accounts/ClientLogin \
-d Email=$LOGIN \
-d Passwd=$PASSW \
-d accountType=GOOGLE \
-d service=cp \
-d Gdata-version=3.0 | grep '^Auth')

curl --silent -o /tmp/contacts.tmp https://www.google.com/m8/feeds/contacts/default/full?max-results=5 \
--header "Authorization: GoogleLogin auth=${AUTH#*=}" \
--header "GData-Version: 3.0" \

# format nicely the Google output
xmllint --format /tmp/contacts.tmp > contacts.xml

I can get the root node:
Code:
$ xmllint --xpath '/' contacts.xml

But it fails when I try the first node below root: <feed>
Code:
$ xmllint --xpath '/feed' contacts.xml 
XPath set is empty

# 2  
Old 12-23-2012
Please understand that you need to supply a sample file if you expect people to help you. Simply obscure your private data or make up some replacement data.
# 3  
Old 12-23-2012
Here you go. A bit tedious to obscure a Google contacts file. This one contains 3 records.

Last edited by ripat; 12-23-2012 at 04:50 PM..
# 4  
Old 12-23-2012
I found this link reporting a similar problem and solution suggesting 2 different approaches. So I thought to share it with you, not sure if it will help.
# 5  
Old 12-24-2012
Quote:
Originally Posted by bipinajith
I found this link reporting a similar problem and solution suggesting 2 different approaches. So I thought to share it with you, not sure if it will help.
Thanks for the hint but I have seen that post but it's about another problem.

There is something wrong with that Google XML file -or with my way to access it. When I grep a record in the xmllint shell, it returns some wild card instead of the node path:
Code:
$ xmllint --shell cts.xml 
/ > grep Arthur
/*/*[16]/*[5] : tan        9 Arthur M.
/*/*[16]/gd:name/gd:fullName : tan        9 Arthur M.
/*/*[16]/gd:name/gd:givenName : ta-        6 Arthur
/ >

My understanding is that it should have returned a full path to the node. Something like:
Code:
/feed/entry/gd:name/gd:fullName

Could that be that the file is corrupt? A xmllint --debug doesn't return anything abnormal though.

But I could be on something:

Code:
xmllint --valid cts.xml
cts.xml:2: validity error : Validation failed: no DTD found !
tp://schemas.google.com/g/2005" gd:etag="W/&quot;A0AFRHc4eit7I2A9WhNVEkU.&quot;"
                                                                               ^

But all other test files that work all right with xmllint generate the same error on validation...

Again, I am getting nowhere...
# 6  
Old 12-24-2012
Quote:
Could that be that the file is corrupt? A xmllint --debug doesn't return anything abnormal though.
No, your sample file is not corrupt. It is valid XML. It just has no DTD - which is fine.

It has multiple namespaces in it, that is why xmllint does not work.

Last edited by fpmurphy; 12-24-2012 at 11:47 AM..
# 7  
Old 12-24-2012
Quote:
Originally Posted by fpmurphy
It has multiple namespaces in it, that is why xmllint does not work.
Could xsltproc be able to extract data despite that multiple namespace thing?
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