variableSort.vim : Function to sort a simulated array variable set.
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| created by |
| Salman Halim |
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| script type |
| utility |
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| description |
This is a sorting function which takes the name of an array-like variable
which ends in numerical subscripts along the lines of var0, var1, var2.
These can be created quite easily with the var{i} notation of Vim 6.
Other parameters are the starting and ending subscripts (inclusive) and the
direction of the sort (1 or 'a' for ascending, otherwise descending).
The array is sorted in place; there is no return value from the function.
Optional argument is the name of a swap function that takes the two
subscripts and swaps the variable (there is one provided that should
actually be good enough for most cases; however, if something special needs
to be done for the swap -- such as multiple records, then this should be
used. In this case, it is assumed the swap function already knows the
variables it's going to swap and thus aren't passed in.)
Sample custom swap function:
function! MultipleRangeSwap( sub1, sub2 )
let temp = b:rangeS{a:sub1}
let b:rangeS{a:sub1} = b:rangeS{a:sub2}
let b:rangeS{a:sub2} = temp
let temp = b:rangeE{a:sub1}
let b:rangeE{a:sub1} = b:rangeE{a:sub2}
let b:rangeE{a:sub2} = temp
endfunction
Sample call:
call SortArray( "b:rangeS", 0, b:numRanges - 1, 1, "MultipleRangeSwap" )
This will perform an ascending sort on a variable sequence named b:rangeS0,
b:rangeS1 etc., using the MultipleRangeSwap function for the actual swap.
This function was needed here because two variables needed to be swapped
together even though only one was used in the sort. The default swap
would've only swapped b:rangeS variables, leaving the b:rangeE variables out
of sync. |
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