> height = `identify -format '%h' target.jpg`
> width = `identify -format '%w' target.jpg`
I assume that this works fine in a UNIX shell (or equivalent), but in a
Windows environment it is not that easy. The return value of identify is
written to stdout and in a DOS shell there is no way of storing it in
a variable. Here is our code that works in a DOS shell:
-----------------------
set icon=logosw.svg
set percent=20
echo off
dir /s /b *.jpg > list
for /f "tokens=1 delims=" %%a in (list) do (
echo %%a
call getsize.bat %%a
for /f "tokens=1 delims=" %%f in (erg) do (call percent.exe %percent%
%%f > erg2)
for /f "tokens=1 delims=" %%b in (erg2) do (
echo %%b
imconv -resize x%%b %icon% icsmallx.tif
composite -dissolve 20 -gravity southeast icsmallx.tif "%%a" "%%a.jpg"
)
)
-----------------------
With getsize.bat being:
identify -format %%h %1 > erg
and percent.exe as a programm just calculating the percentage of the
integer value supplied as a parameter. (This programm could possibly be
substituted by Anthony's trick.)
In a DOS shell is that you have to 'save' the values provided by stdout
in temporary files.
===================
With VBS it's getting somewhat easier. Here is sample code that uses the
value provided by identify at stdout:
-----------------------
Dim wsh, objExec, strText, intSmall
Set wsh = CreateObject("Wscript.Shell")
command = "cmd /k identify -format %h test.jpg"
Set objExec = wsh.Exec(command)
strText = objExec.StdOut.Read(4)
intSmall=int(0.2 * strText)
WScript.Echo intSmall
-----------------------
So what do we draw from this? The DOS shell is a very rudimentary tool
and things get slightly better if you use the new Windows onboard
scripting tools. Using a bash shell sure is a possible solution - on
your own computer...
Thanks for the hints.
Greetings from Münster, Germany
Wolfgang Hugemann
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