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xpath v3 - read and write XML documents with XPath syntax

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aka_bigred

Post subject:

Posted: March 17th, 2009, 12:21 am

Joined: July 22nd, 2008, 2:33 pm
Posts: 7

Thalon - You need to add a new node with the [+1] functionality in your xpath.

Here's my code to add a new question to my XML file and then the answer and points nodes below that. Be sure you create any/all parents before you try creating children of them or it won't work. Below I create the question AND the num nodes in the same statement, but the rest I just have to create & set the siblings to num.

Code:

    ;;If the question exists already, delete it so we can re-save
    if( xpath(theXML, "/root/table[num=" . tableNum . "]/question[num=" . question . "]/count()")  )
    {
        xpath(theXML, "/root/table[num=" . tableNum . "]/question[num=" . question . "]/remove()")
    }

    ;;Save all the properties for the question here
    xpath(theXML, "/root/table[num=" . tableNum . "]/question[+1]/num[+1]/text()", question ) 
    xpath(theXML, "/root/table[num=" . tableNum . "]/question[num=" . question . "]/answer[+1]/text()", answer ) 
    xpath(theXML, "/root/table[num=" . tableNum . "]/question[num=" . question . "]/points[+1]/text()", points ) 

My XML file for reference:

Code:

<root>  
  <table>
    <num>3</num>
    <pad>30</pad>
    <question>
      <num>1</num>
      <answer>1</answer>
      <points>0</points>
    </question>
    <question>
      <num>4</num>
      <answer>1</answer>
      <points>1</points>
    </question>
  </table>
</root>

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Thalon

Post subject:

Posted: March 17th, 2009, 12:48 am

Joined: July 12th, 2005, 1:21 pm
Posts: 633

Ah thank you, that was the missing hint!

Thalon

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Thalon

Post subject:

Posted: March 19th, 2009, 1:27 pm

Joined: July 12th, 2005, 1:21 pm
Posts: 633

Hmm.... there is still one problem

(at least one I've discovered so far)
I can't add elements to nodes with an attribute containing a slash!?

Here is a little sample-code:

Code:

IfExist, test.txt
  FileDelete, test.txt
IfExist, test2.txt
  FileDelete, test2.txt

XMLDoc =
(
<files>
</files>
)

xpath_load(XMLDoc)
xpath(XMLDoc, "/files/file[+1]/@name/text()", "My Test")
xpath(XMLDoc, "/files/file[@name='My Test']/Sprache[+1]/text()", "Test1")
xpath_save(XMLDoc, "test.txt")
msgbox See test.txt
xpath(XMLDoc, "/files/file[+1]/@name/text()", "My/Test")
xpath(XMLDoc, "/files/file[@name='My/Test']/Sprache[+1]/text()", "Test2")
xpath_save(XMLDoc, "test2.txt")
msgbox See test2.txt

The resulting file test2.txt doesn't please me:

Code:

<?xml version="1.0" encoding="iso-8859-1"?>
<files>
  <file name="My Test">
    <Sprache>Test1</Sprache>
  </file>
  <file name="My/Test" />
</files>

Even if the code is the same except the slash in the attributes value the result is different (no language(Sprache)-node for "My/Test"; Compare green and right node above).
Is there a way to "mask" the slash (and other problematic signs) to get this code working? Or will I have to find a way to workaround this (by replacing the character for example)?

Thx for your help!
Thalon, XML noob

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Thalon-n-l-i

Post subject:

Posted: March 20th, 2009, 10:38 am

Found the problem so far, it's a bug in xpathv3

Code:

   ; resolve xpath components to: absolute node path, attributes and predicates (if any)
   Loop, Parse, step, / 

At this position it splits my text in 2 halfs at the literal slash. Therefore the resulting path is wrong and it doesn't find the right node.

I'm trying to fix it myself, but I've to step into the code...

Thalon

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Thalon

Post subject:

Posted: March 20th, 2009, 11:01 am

Joined: July 12th, 2005, 1:21 pm
Posts: 633

I've added a quick-n-dirty fix for the problem:

Code:

  ;Loop added by Thalon to remove a problem with slash in node-values.
   Loop, Parse, step, '
   {
    if ReplaceSlashInNextNode = 1
    {
      StringReplace, NewNodeValue, A_LoopField, /, %scb%, All
      StringReplace, step, step, %A_LoopField%, %NewNodeValue%
    }
    if InStr(A_LoopField, "=")
      ReplaceSlashInNextNode = 1
    else
      ReplaceSlashInNextNode = 0
  }

   ; resolve xpath components to: absolute node path, attributes and predicates (if any)
   Loop, Parse, step, /, 
   {
      s = %A_LoopField%
      StringReplace, s, s, %scb%, /, All  ;added by Thalon to remove a problem with slash in node-values.
      If (InStr(s, "*") == 1) ; regex mode for wildcards
      {
         re = 1
         s := "(?:\w+:)?\w+" . SubStr(s, 2)
      }

Search for the red-marked-part in xpath v3 and replace it with the whole snippet. My added code is marked blue.

I've used the end-of-file-character (in variable "scb") to replace the slash, because it isn't an allowed character and shouldn't cause any harm there..

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greynite

Post subject:

Posted: March 20th, 2009, 3:54 pm

Joined: May 17th, 2008, 5:00 am
Posts: 39
Location: Dallas, TX

Titan wrote:

xpath4 alpha available at http://www.autohotkey.net/~Titan/repos/xpath4.ahk more details later.

Is the code at this link current? And if I'm still having issues, would you suggest I try to tweak version 3, or version 4?

(The fact that I get to even ask such a question is awesome -- thanks Titan!)

Cheers,
Shawn

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eulancer

Post subject: a problem about how to add new node into xml

Posted: March 29th, 2009, 7:28 am

Joined: March 23rd, 2009, 2:39 pm
Posts: 5

Firstly,I am not a native English speaker,so there may be some ambiguous expresions.I plan to use xpath.ahk to add new information in to a xml document.
my code is below

Code:

   username=marry
   userage=18
   XMLfile = %A_ScriptDir%\test.xml
   xpath_load(xml, XMLfile)
   xpath(feed, "/UserList/User[+1]/text()",username)
   path(feed, "/NameList/User[".username."]/Userage[+1]/text()", userage)
   path(feed, "/NameList/User[".username."]/AddDate[+1]/text()", A_DD . "/" . A_MM . "/" . A_YYYY)
   xpath_save(feed, XMLfile)

But the it show a error.
the tip is that the follow variable name contains an illegal character:username."]
addiontally,when I am not putting the variable name into this parameter,the xpath.ahk works.But the xml file's is only covered by the new content, not added. how can I add new content in xml file?
please give me a way to solve this problem.thanks for everyone who give a galance on this.

Last edited by eulancer on March 29th, 2009, 11:21 am, edited 1 time in total.

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DHMH

Post subject:

Posted: March 29th, 2009, 10:18 am

Joined: July 17th, 2008, 9:46 am
Posts: 225

Code:

 username:= "marry" ; or username = marry
   userage:=18
   XMLfile = %A_ScriptDir%\test.xml
   xpath_load(xml, XMLfile)
   xpath(feed, "/UserList/User[+1]/text()",username)
   path(feed, "/NameList/User[".[u]username."][/u]/Userage[+1]/text()", userage)
   path(feed, "/NameList/User[".username."]/AddDate[+1]/text()", A_DD . "/" . A_MM . "/" . A_YYYY)
   xpath_save(feed, XMLfile)

Greets,
DHMH :lol:

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eulancer

Post subject:

Posted: March 29th, 2009, 11:15 am

Joined: March 23rd, 2009, 2:39 pm
Posts: 5

DHMH,thank you for pointing out my mistake. However, after correctting the code as you said,it still show the the same mistake that I have post before

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Tuncay

Post subject:

Posted: March 29th, 2009, 12:06 pm

Joined: November 7th, 2006, 9:47 pm
Posts: 1934
Location: Germany

Try to make spaces around variable and dot for merging strings in expressions. Here a general example:

Code:

greeting := "Hello "
greeting := greeting . "world. I am from Mars."

instead of greeting."world"

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eulancer

Post subject:

Posted: March 30th, 2009, 1:19 pm

Joined: March 23rd, 2009, 2:39 pm
Posts: 5

thank you.my problem has been solved

Code:

StringSplit, TemArray, AddArrayInfo,`n, `r
     xpath_load(pb, "inforamation.xml")
     xpath(pb, "/inforamation/person[+1]/Name[+1]/text()", TemArray1)
     xpath(pb, "/inforamation/person[last()]/Duration[+1]/text()", TemArray2)
     xpath(pb, "/inforamation/person[last()]/Address[+1]/text()", TemArray3)
     ;写入xml文件
     xpath_save(pb, "inforamation.xml")

my code is above

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BoBo³

Post subject:

Posted: March 30th, 2009, 3:14 pm

Has anyone already fiddled with [Klipfolio Personal Dashboard (free)] + AutoHotkey ??
I'd be very interested to see how it could be connected smoothly to operational things like process logs (after its conversion with AHK)/web alerts/ebay auctions/<your favourite XML output here>

Feel free to bother me with noobish Beta-testing tasks :shock:

Quote:

1. Super Small
Track news, blogs, weather, email, RSS feeds and with less screen space than a single widget. It uses a lot less RAM than sidebars or widgets too.

2. Really Fast
Fast downloads, fast processing, and a fast display mean no waiting.

3. Always On
Klipfolio Dashboard always shows you the latest information and can alert you to important changes too.

Looking for more horsepower? Check out Klipfolio Dashboard for Business.
Features of Klipfolio Personal Dashboard ...

You can write a Klip in as little as 7 lines of XML.

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Tuncay

Post subject:

Posted: April 13th, 2009, 9:04 pm

Joined: November 7th, 2006, 9:47 pm
Posts: 1934
Location: Germany

Tuncay wrote:

I am trieng to upgrade from version 1 of xpath to version 3 and have massive problems. I try to update all old xpath occurrence with new calls.

In old days with xpath 1, I did often this:

Code:

ConfigDoc := XmlDoc(ConfigFile)
NodeCommands := XPath(ConfigDoc, "/hiscoreRecConfig/commands")
MsgBox % XPath(NodeCommands, "/hiscoreRecConfig/commands/command[@name=mame]/command/text()")

to enable faster calls, because in this case xpath() does not need to search full document, just the little section which is needed. (this works.)

If I now try this with xpath 3, ill get empty string:

Code:

xpath_load(ConfigDoc, ConfigFile)
NodeCommands := XPath(ConfigDoc, "/hiscoreRecConfig/commands")
MsgBox % XPath(NodeCommands , "/hiscoreRecConfig/commands/command[@name=mame]/command/text()")

(changed a copy paste error)

it does not work anymore. I want use subsets / parts of a xml file. Why does it not work? On bigger xml files, could this not be a speed up at Loops with high frequently calls of same subset?

Here is the configuration file:

Code:

<?xml version="1.0" encoding="iso-8859-1"?>

<hiscoreRecConfig>
    <options>
        <option name="autoSave">0</option>
        <option name="exportAutoRun">1</option>
        <option name="scoreDelimChar">,</option>
        <option name="searchMatchType">InStr</option>
        <option name="speedCompareThreshold">5</option>   
        <option name="listTitleCount">12</option>  
        <option name="defaultLabelName1">stage</option>
        <option name="defaultLabelName2">vehicle</option>
        <option name="defaultLabelName3">character</option>
    </options>
    <users>
        <user name="player">Tuncay</user>
        <user name="rival">Akira</user>
    </users>
    <path>
        <file name="var">var.ini</file>
        <file name="highscores">hiscore.xml</file>
        <folder name="backup">backup</folder>
        <folder name="programs">bin</folder>
        <folder name="cache">cache</folder>
        <folder name="export">export</folder>
        <folder name="highscores">inp</folder>
        <folder name="snap">snap</folder>
        <folder name="ico">icons</folder>
    </path>
    <commands>
        <command name="mame">E:\Tuncay\Emulatoren\Mame\Mamepp.exe</command>
        <command name="compress">bin\7z.exe a -t7z -mx1</command>
        <command name="uncompress">bin\7z.exe e</command>
        <command name="scripteditor">C:\Programme\Vim\vim72\gvim.exe</command>
        <command name="editor">C:\Programme\Vim\vim72\gvim.exe</command>
    </commands>
</hiscoreRecConfig>

Now I got it to work. There was not any problem with that. After

Code:

NodeCommands := xpath(ConfigDoc, "/hiscoreRecConfig/commands")

the variable

Code:

NodeCommands

contains the right node. But MsgBox is not able to show the content from that variable. The variable must be reformatted with

Code:

xpath_load(NodeCommands)

and then accessing in following way

Code:

MsgBox % XPath(NodeCommands , "/commands/command[@name=mame]/text()")

should show

Quote:

E:\Tuncay\Emulatoren\Mame\Mamepp.exe

note: xpath v3 is twice slower than xpath v1 but less buggy and works great.

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gregster

Post subject:

Posted: April 16th, 2009, 9:15 pm

Joined: March 19th, 2009, 4:04 pm
Posts: 9

Hi there,

hopefully you can help me. I have a problem with hyphens ("-") in node-names, like for example <sur-name>. Nothing is returned in these cases when I try to fetch the text.

I use this script for testing:

Code:

xml := xpath_load(xmlvar, "test2.xml")

name := xpath(xmlvar, "/addressBook/address[2]/firstName/text()")
   msgbox %name%
name := xpath(xmlvar, "/addressBook/address[2]/sur-name/text()")
   msgbox %name%

This is the test2.xml file that I use (it is not the actual xml file that I download from the internet), but anyway it should work the same way:

Code:

<addressBook>
     <address>
          <firstName>John</firstName>
          <sur-name>Smith</sur-name>
          <email>smithj@world.org</email>
          <tel type = "work">234-123-222</tel>
     </address>
     <address>
          <firstName>Alice</firstName>
          <sur-name>Brown</sur-name>
          <email>Alice.Brown@europe.com</email>
          <tel type = "home">22-33-444</tel>
          <tel type = "work">11-43-222</tel>
     </address>
     <address>
          <firstName>George</firstName>
          <sur-name>White</sur-name>
          <email>gw@rock.com</email>
     </address>
</addressBook> 

There is probably some parsing problem with the hyphen. A work-around would probably be to replace the hyphens beforehand, but may be there is a easier way...

Thank you in advance for your help.

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pkutter

Post subject: Trying to write a script that will modify all xml files

Posted: April 23rd, 2009, 6:00 pm

Joined: March 18th, 2009, 3:06 pm
Posts: 17
Location: Minnesota, USA

I'm trying to write a script to recursively modify all XML files in a user profile folder. I'm not sure if this is a problem with my syntax in AHK or xpath. I suspect that it's either that it doesn't like the space or the @ in the path. My script and error message are below. The MsgBox is only for my debugging purposes and will be removed when it's done. Any assistance would be greatly appreciated.

AHK Script

Code:

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.
#include xpath.ahk

Loop, %A_AppData%\Pandion\Profiles\settings.xml, , 1  ; Recurse into subfolders.

{
    xpath_load(%A_LoopFileFullPath%) ; load an XML document
    xpath(xmlfile, "settings/history_store() ", "true")
    
    MsgBox, 4, , Filename = %A_LoopFileFullPath%`n`nContinue?
    IfMsgBox, No
        break

    xpath_save(%A_LoopFileFullPath%, feed) ; write XML
    
}

And here's the error

---------------------------
updatepandionlogging.ahk
---------------------------
Error: The following variable name contains an illegal character:
"\\server\RedirectedFolders\usernameremoved\Application Data\Pandion\Profiles\admin@chat.domain.local\settings.xml"

The current thread will exit.

Line#
448: }
449: StringReplace,doc,xml,,,,,All
450: NumPut(0, doc := " " . doc, 0, "UChar")
451: Return,true
452: }
020: Loop,%A_AppData%\Pandion\Profiles\settings.xml,,1
022: {
---> 023: xpath_load(%A_LoopFileFullPath%)
024: xpath(xmlfile, "settings/history_store() ", "true")
028: MsgBox,4,,Filename = %A_LoopFileFullPath%

Continue?
029: IfMsgBox,No
030: Break
033: xpath_save(%A_LoopFileFullPath%, feed)
035: }
035: Exit

---------------------------
OK
---------------------------

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