shell script help: sorting, incrementing environment variables and stuff

secoif · #1 (**permalink**) 05-08-2008

First: me == noob. Whats a good resource for shell script info cause I'm having trouble finding good info.

I'm writing a shell script to automate the setup of a flash 'page flip'.

My current code is below.

the page flip takes an xml file of format

HTML Code:

<content>
<pages src="/path/to/image.jpg" preload="true"></pages>
etc
</content>

I want my shell script to:

1. make folders ./xml and ./pages
2. copy the jpegs to the "./pages/param2" folder
3. Read a directory of jpegs (passed as param1)
4. build the xml file listing the files SORTED!
(eg <page src="file1" preload="true"></page>
<page src="file2" preload="true"></page>...
<page src="file10" preload="false"></page>)
5. only set preload=true for the first X pages
6. package ./pages and ./xml into a tar then transfer it to my web server

Some of the jpegs whose filenames need to be used in the xml file, have names like:
PrefixIndex.jpg
eg, where BRISGUIDE_JAN08 is the Prefix:

BRISGUIDE_JAN08.jpg
BRISGUIDE_JAN0802.jpg
BRISGUIDE_JAN0803.jpg
BRISGUIDE_JAN0804.jpg
etc

So to get it to sort properly in the xml file(eg 2.jpg comes after 1.jpg, not after 10.jpg), i was pulling the BRISGUIDE_JAN08 off and using sort -n to arrange them by their Index.
but then I end up with a file called .jpg cause the first file doesn't have an index...
so i thought I'd add a 0 to the start of the file. This is fine, a little ugly but the question is:

maybe there is a way to get the sort command to sort a list like:

Code:

page.jpg
page1.jpg
page10.jpg
page2.jpg
page3.jpg

into

Code:

page0.jpg
page1.jpg
page2.jpg
page3.jpg
page10.jpg

I guess I could just add the prefix back on to the file after I've written the xml file in numeric order....

PLUS I can't get the counting variables working for the preload up to X working.
Is there an alternative to environment variables for counting in shell scripts?

Maybe this would be better in a different shell? CSH?

Thanks!

Code:

#!/bin/sh
if [ $# -ne 3 ]; then
        echo;
        echo Usage: $0 source_jpegs_folder name [prefix_to_remove]
        echo EXAMPLE: $0 ./jpegs 01_2008_SEQ BRISGUIDE_JAN08
        echo;
        exit 127
fi

automator_path=/YYY/Projects/Pageflip/ag_automator; export automator_path;
ag_id=$2; export ag_id;
number_to_preload=6; export number_to_preload;
ag_counter=0; export ag_counter;
mkdir $automator_path/pages;
mkdir $automator_path/xml;

cd $1;

for each in *.jpg; do
        cp "$each" $automator_path/pages/$(echo $each|sed "s/ /_/g")
done

echo "<content width=\"283\" height=\"595\" hcover=\"false\" transparency=\"true\">" > $automator_path/xml/$ag_id.xml

cd $automator_path/pages/

mkdir $automator_path/pages/$2;

for f in *.jpg; do
        mv $f $automator_path/pages/$ag_id/
done

cd $automator_path;

cd pages/$ag_id;

for h in *.jpg; do
        mv $h 0${h#$3};
done


for f in `ls *.jpg | sort -n`; do
        if [ $ag_counter -lt $number_to_preload ]; then
        echo "<page src=\"/pages/$2/0$f\" onLoad=\"true\" ></page>" >> $automator_path/xml/${ag_id}.xml
        else
        echo "<page src=\"/pages/$2/0$f\" onLoad=\"false\" ></page>" >> $automator_path/xml/${ag_id}.xml
        fi
        "$ag_counter" = "$ag_counter"+1;
        export "$ag_counter";
done

echo "</content>" >> $automator_path/xml/$ag_id.xml;

cd $automator_path

tar -cvzf $ag_id.tar.gz xml/$ag_id.xml pages/$ag_id;
scp ./$ag_id.tar.gz admin@XXX.com:~/vhosts/XXX.com/httpdocs/work;
wait;

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