Posts Tagged ‘script’

Converting file extensions to lower case

Friday, January 15th, 2010

Recently I needed to convert a large number of photo file extensions to lower case. Doing this manually would take ages and wouldn’t be a fun job.

I wrote a quick batch file to look through all the sub-directories from the one it is executed from and change selected file extensions to lower case.

To use this script place the below code in a file called lowerCaseExtensions.bat. Put the batch file in the directory containing the files that you want changed and double click on it.

The script will loop through all the files in the directory, and will loop thought the files in all sub-directories and will change jpg, png and gif extension to lower case.

@echo off
setlocal
pushd .

goto :skip_functions

:toLower
	cd %1
	echo Processing %1
	ren *.JPG *.jpg 2>&1
	ren *.PNG *.png 2>&1
	ren *.GIF *.gif 2>&1
goto :EOF

:skip_functions

for /f %%i in ('dir /b/s/ad') do call :toLower %%i

popd
endlocal

You can easily customise this to change the file extensions of other file types to lower case.

This has been tested only on my Windows XP computer so I’d suggest you test it first on some copied files before you let it lose on your real ones.

Even if you aren’t specifically interested in the functionality that this batch file implements you might find it interesting to see how to implement a simple callable function in a batch file (:toLower), and how to implement ‘for’ loops.

Batch processing photos with DOS and ImageMagick

Thursday, August 7th, 2008

For my recent walking project I knew I was going to be taking lots of photos. I wanted a DOS script which would batch process the JPEG photos from my camera into the ‘full sized images’ (which are much smaller than the raw camera images), and the poloroid-like thumbnails.

The excellent ImageMagick tool provides a way to generate poloroid-like thumbnails automatically. I also wanted the thumbnails to be rotated at random angles which ImageMagick can do as well.

However the ImageMagick instructions were missing a few things 1) they seem to be aimed at people using Unix / Linux scripts whereas I’m using DOS scripts and 2) they show how to do this processing on single images rather than on a whole directory of them.

Poloroid rotation with ImageMagick Poloroid rotation with ImageMagick

It is quite easy to generate a random rotation angle with a simple bit of perl. The below line will generate a random floating point number between -7 and +7. I want both negative and positive numbers so that some of the poloroids will be tilted to the left, and others to the right.

perl -e "print rand() * 14 - 7"

I wanted to do all the processing through a DOS batch file so the next problem was how to get the random number into a DOS environmental variable. The answer is to use the ‘for /f‘ command to assign the output of a command into a variable:

for /f %%i in ('perl -e "print rand() * 14 - 7"') do set ANGLE=%%i

At the time when I wrote this script generating a poloroid involved a whole sequence of commands. Something like below!

-bordercolor white -border 6 -bordercolor grey60 -border 1 -background none -rotate %ANGLE% -background black ( +clone -shadow 60x4+4+4 ) +swap -background white -flatten

My script still uses this long poloroid command, but you might want to use the new one word ‘poloroid‘ command which is built straight into the latest versions of ImageMagick instead.

As well as generating the poloroid thumbnails it will also generate the full size website friendly images which are tagged with the website URL.

Prerequisites:
Your JPEG images are in an ‘images’ directory.

Usage:
ProcessPhotos.bat [path of directory that contains 'images' directory]

Output:
A new directory called ‘generated’ in the input directory containing a full size image (which has been tagged with the website URL), and a poloroid thumbnail.

Notes:
In order to use this script you will have to customise 1) the location of the ImageMagick executable 2) the reference to the drive – it is assuming a ‘f:’ drive here and 3) the website URL.

ProcessPhotos.bat
setlocal
pushd .

goto :skip_functions

:makeThumb
	echo %1
	set jpg=%1
	set jpg=%jpg:~0,-4%
	echo %jpg%
	for /f %%i in ('perl -e "print rand() * 14 - 7"') do set ANGLE=%%i
	set ANNOTATE=-gravity south -stroke "#000C" -strokewidth 2 -annotate +0+20 "www.reviewmylife.co.uk" -stroke none -fill white -annotate +0+20 "www.reviewmylife.co.uk"
	set POLOROID=-bordercolor white -border 6 -bordercolor grey60 -border 1 -background none -rotate %ANGLE% -background black ( +clone -shadow 60x4+4+4 ) +swap -background white -flatten
	D:\apps\ImageMagick-6.3.6-Q16\convert %1 ( +clone -resize 600x -auto-orient %ANNOTATE% -compress JPEG -quality 70 -write %jpg%_full.jpg +delete ) -resize 180x -auto-orient %POLOROID% -compress JPEG -quality 80 -sampling-factor 2x1 -strip %jpg%_th.jpg
goto :EOF

:skip_functions

f:
cd %1\images
for /f %%i in ('dir /b *.jpg') do call :makeThumb %%i

md %1\generated
move *_full.jpg ..\generated
move *_th.jpg ..\generated

popd
endlocal

Using a common form mail script for multiple websites

Thursday, June 12th, 2008

I run a number of different websites. Most of them have a contact page which is powered by a form mail script. Until recently each of these websites used an almost identical copy of the same form mail script – I use PHPFormMail but you could adapt this solution for other form mail scripts. Each contact us page has very similar HTML in it. I wanted a way of sharing a common form script and wanted to avoid the duplicated HTML without losing the individual styling of each contact us page.

For this to work for you you’ll need:

  1. All your websites to be on a single host.
  2. To be allowed to use .htaccess files.
  3. Have enough technical knowledge to understand what I’m saying and to customise this for your own site. I’ll give you enough information to implement this, but only if you have enough understanding of knowledge of HTML, PHP and .htaccess files.

On my web server I use one directory for each domain. I map my domain names to directories like this:

http://www.reviewmylife.co.uk    ->   /reviewmylife-web/
http://www.advancedhtml.co.uk    ->   /advancedhtml-web/
http://www.interrail-italy.co.uk ->   /interrail-web/

You’ll note that it is not possible to access the root of my web hosting account ‘/’ from the web.

I’ve added a common directory to store the form mail script and the form HTML. This directory is not accessible from any web address. I’ll explain the contents of the formmail.inc later on.

/common/
/common/formmail.php
/common/formmail.inc

The formmail.php is my usual PHPFormMail script.

I then set up a global variable in a .htaccess file in the root of my web server. This .htaccess file is not accessible to any of my website visitors but it is processed.

/.htaccess

The contents of the .htaccess look like the below snippet. You’ll need to replace the /kunden… part with the path of your own common directory.

SetEnv COMMON_PATH /kunden/homepages/25/d3262381/htdocs/common

If you don’t know what your web server path looks like create a file called ‘test.php’ with the following contents – <?PHP phpinfo(); ?> and then load file from your browser. You can use this test.php to verify that your new environmental variable is present. Below is my formmail.inc

formmail.inc
<center>
<form method="post" action="commonformmail.php">
<table width="80%" cellpadding="0" cellspacing="0">
<tr>
  <td><font face="arial">Name</font></td>
  <td><p><input type="text" name="name"></p></td>
</tr>
<tr>
  <td><font face="arial">Email</font></td>
  <td><p><input type="text" name="email"></p></td>
</tr>
<tr>
  <td><font face="arial">Subject</font></td>
  <td><p><input type="text" name="subject"></p></td>
</tr>
<tr>
  <td><font face="arial">Message</font></td>
  <td><p><textarea name="message" rows="15" cols="45"></textarea></p></td>
</tr>
<tr>
  <td></td>
  <td><p><input type="submit" name="Submit" value="Send"></p></td>
</tr>
</table>
<p>
<input type="hidden" name="redirect" value="thanks.htm"></p>
<input type="hidden" name="recipient" value="commonmail">
<?php
print "<input type="hidden" name="referer" value="" . $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"] . "">\n";
?>
<input type="hidden" name="env_report"
 value="REMOTE_HOST,HTTP_USER_AGENT,REMOTE_ADDR">
</form>
</center>

Look at the PHPFormMail documentation for information about the redirect, recipient and env_report fields. You’ll note that I have added a referer field so that I’ll know which of my websites this form was posted from. The value of the recipient field has to be present in the PHPFormMail $recipient_array. If your contact page is a .html rather than a .php you’ll have to make sure that you can use PHP in HTML files.

In your contactus/emailus HTML file you can include the form like this:

<?php
include_once($_SERVER['REDIRECT_COMMON_PATH'] . '/formmail.inc');
?>

The final part of the solution is to add a commonformmail.php to each of your individual website directories. It will look like this and just includes the shared form mail script.

<?php
include_once($_SERVER['REDIRECT_COMMON_PATH'] . '/formmail.php');
?>

From now on you can change the behaviour and look of all your website forms from one place.