I had this problem of debugging some xml but when reading the output of some log4j it was almost impossible to read so I needed some way of prettifying the xml quickly.
For this example I have the following xml:
<?xml version="1.0"?><xml><iq xmlns="jabber:component:accept" from="test1@temp.retep.org/client" id="iq_257" to="service.retep.org" type="get"><query xmlns="some:namespace"/></iq></xml>
So how do we pretify this in emacs?
Well the first thing to do is to write an extension function & place it into your ~/.emacs file. Placing it here means that when you open emacs the extension is available:
(defun xml-format ()
(interactive)
(save-excursion
(shell-command-on-region (mark) (point) "xmllint --format -" (buffer-name) t)
)
)
Now this works by passing the buffer to the xmllint utility and replaces it with the output – in this case nicely formatted xml.
Now we need to install xmllint:
pi@lindesfarne: ~$ sudo apt-get install libxml2-utils
Ok so now open emacs and open the xml. To format first select the xml you want to format then Press Escape then x followed by xml-format & press return. You should then get the xml nicely formatted:
<?xml version="1.0"?>
<xml>
<iq xmlns="jabber:component:accept" from="test1@temp.retep.org/client" id="iq_257" to="service.retep.org" type="get">
<query xmlns="some:namespace"/>
</iq>
</xml>
In the first article I covered how to install a weather station on a Raspberry PI. In the second part I’ll cover how to get it to upload data on an hourly basis to a website using FTP.
First we need to get the station to run hourly. To do this I created a script called weatherupload which I placed under /usr/local/bin
pi@kell: ~$ sudo vi /usr/local/bin/weatherupload
Enter the following:
#!/bin/bash cd /usr/local/weather python Hourly.py -vvv data
Once saved make it executable and then edit the main crontab:
pi@kell: ~$ sudo chmod +x /usr/local/bin/weatherupload pi@kell: ~$ sudo vi /etc/crontab
At the end of the file you need to add the following:
0 * * * * root /usr/local/bin/weatherupload
Save it and now every hour it will now run.
Note: I’ve placed it there and not under /etc/cron.hourly because
First to generate the graphs pywws uses gnuplot so we need to install it:
pi@kell: ~/sudo apt-get install gnuplot
Next we need to add some details to the stations weather.ini file. At the top theres a section called paths. Make sure those point to the relevant templates and graph_templates directories in your pywws install.
Next under the hourly section you should see a pair of lines:
plot = [] text = []
You need to add the plots and pages that need to be generated:
plot = ['7days.png.xml', '24hrs.png.xml', 'rose_24hrs.png.xml', 'rose_7days_nights.png.xml'] text = ['current.html', '24hrs.html', '6hrs.html', '7days.html', 'feed_hourly.xml', 'allmonths.html']
Finally theres the ftp section which needs configuring with the remote ftp server (your web host will give you these):
[ftp] secure = False site = ftp.example.com local site = False user = myaccount@example.com directory = /weather/ password = mypassword
That’s about it. Now when you run the hourly script it will generate some simple pages & images to your website.
You can see an example of this over at maidstoneweather.com – although the uploaded templates only form part of that site.
