Unit Conversion Plugin

Jared Howard

Lines are typically separated by a space, however can vary as to if they have a decimal point or not. They will most likely always be a variation of the below.

2.99, 10,
3.98, 9,

0.25, 0.39,
0.25, 0.39,

Claudia Frank

Can I safely assume that you always use ALT+SHIFT to select the values?
This is critical because selecting with ALT+SHIFT and arrow right etc. results (taking your example) in

Selection:0 Values:2.99, 10,
Selection:1 Values:3.98, 9,
Selection:2 Values:
Selection:3 Values:0.25, 0.39,
Selection:4 Values:0.25, 0.39,

whereas using CTRL+ALT would result in

Selection:0 Values:2.99, 10,
3.98, 9,

0.25, 0.39,
0.25, 0.39,

As you see, the first would report 5 selections, each line as one selection where as
the second reports one selection for all 5 lines.

If using ALT+SHIFT we need to check if line has valid values (empty lines issue),
then split by comma, do conversion for each value and rebuild string.
Should we go this way?

Cheers
Claudia

Jared Howard

Correct, I always use ALT+SHIFT for selection. Your proposal sounds like the correct way to proceed.

Thank you again for your assistance. I am more versed in Pascal and am not very fluent yet with Python.

Claudia Frank

Hi,

I did some tests(empty line, just a comma, double comma) and I guess this should do the trick

editor.beginUndoAction()

def conv_mile_kilometers(miles):  
    list_of_values = miles.split(',')
    km = ''
    for value in list_of_values:
        if len(value) > 0 and value.isspace != True:
            km += str(float(value) / 1.6) + ','
    return km

for i in range(editor.getSelections()):
    start = editor.getSelectionNStart(i)
    end = editor.getSelectionNEnd(i)
    word = editor.getTextRange(start,end)
    if len(word) > 0 and word.isspace != True:
        editor.setTarget(start, end)
        editor.replaceTarget('{0}'.format(conv_mile_kilometers(word)))    
    
editor.endUndoAction()

Cheers
Claudia

Claudia Frank

Correction:-(

Unfortunattely I cannot edit my post so

both isspace items need to be changed to isspace()
because they are functions.

Full code

editor.beginUndoAction()

def conv_mile_kilometers(miles):  
    list_of_values = miles.split(',')
    km = ''
    for value in list_of_values:
        if len(value) > 0 and value.isspace() != True:
            km += str(float(value) / 1.6) + ','
    return km

for i in range(editor.getSelections()):
    start = editor.getSelectionNStart(i)
    end = editor.getSelectionNEnd(i)
    word = editor.getTextRange(start,end)
    if len(word) > 0 and word.isspace() != True:
        editor.setTarget(start, end)
        editor.replaceTarget('{0}'.format(conv_mile_kilometers(word)))    
    
editor.endUndoAction()

Cheers
Claudia

Jared Howard

Excellent it works great, thank you!

The last question I have regarding this is how do I format the number of decimals that the values get returned as when converted?

Claudia Frank

Hello Jared,

I’m sorry I don’t understand your question could you gimme an example
of what you want to do?

Thanks
Claudia

Jared Howard

Sorry I see my wording was not clear.

Once I convert say millimeters to inches is there a way to control the number of decimal places?

1.33 inches converted to metric is = 33.782

I want the value to only display 2 decimal places, 33.78. How is that accomplished?

Thanks again!

Claudia Frank

Hello,
this can be done using format’s strength.
Within the try block we need to change the following line

km += str(float(value) / 1.6) + ','

to

km += '{0:.2f},'.format(float(value) / 1.6)

Short explanation, the placeholder {0} receives the result from the
calculation float(value) / 1.6.
By specifying the colon after the zero, the format function gets informed
that the result needs to be reformatted.
The dot after the colon defines precision formatting,
the number 2 specifies only 2 decimal places and the letter f is to inform that it is
a float which needs to be formatted.

But we can go one step further, if you are interested in keep the number of
decimal places of the input and the output value the same then
we can replace the km += … line with the following two lines.

decimal_places = str(value)[::-1].find('.')
km += '{0:.{1}f},'.format((float(value) / 1.6),decimal_places)

as you see, the 2 is now replaced with another placeholder{1} which
get the value of decimal_places variable, which itself gets the value
from a stringified value where we search for the dot from right to left (that is what the -1 stands for).

Cheers
Claudia

Jared Howard

Outstanding!