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function! puppet#align#IndentLevel(lnum)
return indent(a:lnum) / &shiftwidth
endfunction
function! puppet#align#LinesInBlock(lnum)
let lines = []
let indent_level = puppet#align#IndentLevel(a:lnum)
let marker = a:lnum - 1
while marker >= 1
let line_text = getline(marker)
let line_indent = puppet#align#IndentLevel(marker)
if line_text =~? '\v\S'
if line_indent < indent_level
break
elseif line_indent == indent_level
call add(lines, marker)
endif
endif
let marker -= 1
endwhile
let marker = a:lnum
while marker <= line('$')
let line_text = getline(marker)
let line_indent = puppet#align#IndentLevel(marker)
if line_text =~? '\v\S'
if line_indent < indent_level
break
elseif line_indent == indent_level
call add(lines, marker)
endif
endif
let marker += 1
endwhile
return lines
endfunction
""
" Format lines with hashrocket (=>)
" @param a:1 a line where function should search for first hashrocket
" expression, if param is not given, line with active cursor is used
function! puppet#align#AlignHashrockets(...) abort
let l:lnum = get(a:, 1, line('.'))
let lines_in_block = puppet#align#LinesInBlock(l:lnum)
let max_left_len = 0
let indent_str = printf('%' . indent(l:lnum) . 's', '')
for line_num in lines_in_block
let data = matchlist(getline(line_num), '^\s*\(.\{-}\S\)\s*=>\s*\(.*\)$')
if !empty(data)
let max_left_len = max([max_left_len, strlen(data[1])])
endif
endfor
for line_num in lines_in_block
let data = matchlist(getline(line_num), '^\s*\(.\{-}\S\)\s*=>\s*\(.*\)$')
if !empty(data)
let new_line = printf('%s%-' . max_left_len . 's => %s', indent_str, data[1], data[2])
call setline(line_num, new_line)
endif
endfor
endfunction
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