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Build string of variables
Posted: 30 Oct 2018 23:36
by hermhart
Is it possible to build a variable depending on your choices?
I'm trying to build a variable so if I have an inputselect box that has 3 choices and I choose check box 2, I want the result to be $1*$3, if I choose checkbox 3 the result would be $1$2*, or if I choose checkboxes 1 and 2 the result would be **$3 (or perhaps a single "*" instead of 2 wildcards in a row). The purpose of this is that I have a regex of several groups of characters and I want the checkbox to result in the use of the asterisk '*' to be a wildcard wherever I choose but keep the other variables (groups).
$1*$3 would be: group1*group3
$1$2* would be: group1group2*
**$3 would be: **group3
What I have so far, but am stuck.
Code: Select all
$source = inputselect("Choose an option:<crlf>(select only one) ", "1|2|3|4|5", , 2+8192, , 300, 262, Selection);
if ($source=="1") {
$result = "$1";
}
else {
$result = "*";
}
if ($source=="2") {
$result = "$result" . "$2";
}
else {
$result = $result . "*";
}
if ($source=="3") {
$result = "$result" . "$3";
}
else {
$result = $result . "*";
}
Re: Build string of variables
Posted: 31 Oct 2018 00:06
by highend
No clue why this "design" is chosen... Why exactly do you need different variables instead of storing the result in one (e.g. separating values via "|")?
Apart from that you are talking about using the dereference operator (help file!)
Some sample code:
Code: Select all
$folders = "C:\Temp|D:\Temp";
while ($i++ < gettoken($folders, "count", "|")) { // Two time loop
// '$folder' is the new first part of the variable here, not a reference to an existing variable!
// This first part must be SINGLE quoted, otherwise it could reference an already existing variable
// "$folder", which would NOT work!
$var = '$folder_' . $i;
$value = gettoken($folders, $i, "|");
*$var = $value;
}
echo $folder_2;
Re: Build string of variables
Posted: 31 Oct 2018 00:21
by hermhart
Not sure that I understand it all, but I will try to break it down and figure it out if I can.
Thank you for the help!
Re: Build string of variables
Posted: 31 Oct 2018 09:54
by PeterH
hermhart wrote: ↑31 Oct 2018 00:21
Not sure that I understand it all, but I will try to break it down and figure it out if I can.
Thank you for the help!
You may want to have a look at Help: Scripting / Dereference Operator
Re: Build string of variables
Posted: 02 Feb 2024 15:31
by yusef88
highend wrote: ↑31 Oct 2018 00:06
Code: Select all
$folders = "C:\Temp|D:\Temp";
while ($i++ < gettoken($folders, "count", "|")) { // Two time loop
// '$folder' is the new first part of the variable here, not a reference to an existing variable!
// This first part must be SINGLE quoted, otherwise it could reference an already existing variable
// "$folder", which would NOT work!
$var = '$folder_' . $i;
$value = gettoken($folders, $i, "|");
*$var = $value;
}
echo $folder_2;
Sorry for the question
how can make
$folder_2, $folder_3 and so on a global variables?
Re: Build string of variables
Posted: 02 Feb 2024 15:42
by highend
By putting a global in front of *$var = $value;
But to get the value of such a variable e.g. inside a function (without passing the variable to it), you would need a global statement there as well for that specific variable => Makes no sense
For what exactly would you need such a variable as a global? Show code...
Re: Build string of variables
Posted: 02 Feb 2024 16:22
by yusef88
Actually what I need are just two variable values. I was asking out of curiosity if such thing is possible i can modify the script to meet my needs. don't bother thanks
Code: Select all
"_Initialize"
Global $ffmpeg = "D:\master\ffmpeg-n6.0-win32-shared\bin\ffmpeg.exe";
if ( <drop> ) { $files = "<drop |>"; }
else { $files = "<selitems |>"; }
while ($i++ < gettoken($files, "count", "|")) {
$var = '$file' . $i;
$value = gettoken($files, $i, "|");
*$var = $value;}
"combine"
run lax("$ffmpeg" -i "$file1" -i "$file2" -c:v copy -c:a copy "<curbase>"_mux.mkv)
"example"
$ffmpeg $file1 $file2 $file3
Re: Build string of variables
Posted: 02 Feb 2024 19:40
by highend
The script doesn't work that way. You need to have global declarations in each subsection for each variable that you've defined as global in "_Initialize"
And if you only ever need 2 variables I see no need to use a loop and dereferencing...
Code: Select all
"_Initialize"
Global $ffmpeg = "D:\master\ffmpeg-n6.0-win32-shared\bin\ffmpeg.exe";
if ( <drop> ) { $files = "<drop |>"; }
else { $files = "<selitems |>"; }
while ($i++ < gettoken($files, "count", "|")) {
$var = '$file' . $i;
$value = gettoken($files, $i, "|");
global *$var = $value;
}
// Alternative instead of the dereferencing above for two files
global $file1 = gettoken(<selitems |>, 1, "|");
global $file2 = gettoken(<selitems |>, 2, "|");
"combine"
Global $ffmpeg, $file1, $file2;
run lax("$ffmpeg" -i "$file1" -i "$file2" -c:v copy -c:a copy "<curbase>"_mux.mkv)
...
If there are really multiple file variables you could use the loop but in this case I wouldn't use a multi-section script but instead a normal one and create
popupmenu() entries, eval & execute them.
Re: Build string of variables
Posted: 03 Feb 2024 11:31
by yusef88
this seems simple and easy
thank you for explaining
Code: Select all
"_Initialize"
Global $ffmpeg = "D:\master\ffmpeg-n6.0-win32-shared\bin\ffmpeg.exe";
global $file1 = gettoken(<selitems |>, 1, "|");
global $file2 = gettoken(<selitems |>, 2, "|");
"combine"
Global $ffmpeg, $file1, $file2;
run lax("$ffmpeg" -i "$file1" -i "$file2" -c:v copy -c:a copy "<curbase>"_mux.mkv)
...