mirror of
https://github.com/amix/vimrc
synced 2024-12-19 08:23:09 +00:00
409 lines
14 KiB
VimL
409 lines
14 KiB
VimL
" Tabular: Align columnar data using regex-designated column boundaries
|
|
" Maintainer: Matthew Wozniski (godlygeek@gmail.com)
|
|
" Date: Thu, 03 May 2012 20:49:32 -0400
|
|
" Version: 1.0
|
|
"
|
|
" Long Description:
|
|
" Sometimes, it's useful to line up text. Naturally, it's nicer to have the
|
|
" computer do this for you, since aligning things by hand quickly becomes
|
|
" unpleasant. While there are other plugins for aligning text, the ones I've
|
|
" tried are either impossibly difficult to understand and use, or too simplistic
|
|
" to handle complicated tasks. This plugin aims to make the easy things easy
|
|
" and the hard things possible, without providing an unnecessarily obtuse
|
|
" interface. It's still a work in progress, and criticisms are welcome.
|
|
"
|
|
" License:
|
|
" Copyright (c) 2012, Matthew J. Wozniski
|
|
" All rights reserved.
|
|
"
|
|
" Redistribution and use in source and binary forms, with or without
|
|
" modification, are permitted provided that the following conditions are met:
|
|
" * Redistributions of source code must retain the above copyright notice,
|
|
" this list of conditions and the following disclaimer.
|
|
" * Redistributions in binary form must reproduce the above copyright
|
|
" notice, this list of conditions and the following disclaimer in the
|
|
" documentation and/or other materials provided with the distribution.
|
|
" * The names of the contributors may not be used to endorse or promote
|
|
" products derived from this software without specific prior written
|
|
" permission.
|
|
"
|
|
" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY EXPRESS
|
|
" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
" NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
|
" OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
" NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
" Stupid vimscript crap {{{1
|
|
let s:savecpo = &cpo
|
|
set cpo&vim
|
|
|
|
" Private Functions {{{1
|
|
|
|
" Return the number of bytes in a string after expanding tabs to spaces. {{{2
|
|
" This expansion is done based on the current value of 'tabstop'
|
|
if exists('*strdisplaywidth')
|
|
" Needs vim 7.3
|
|
let s:Strlen = function("strdisplaywidth")
|
|
else
|
|
function! s:Strlen(string)
|
|
" Implement the tab handling part of strdisplaywidth for vim 7.2 and
|
|
" earlier - not much that can be done about handling doublewidth
|
|
" characters.
|
|
let rv = 0
|
|
let i = 0
|
|
|
|
for char in split(a:string, '\zs')
|
|
if char == "\t"
|
|
let rv += &ts - i
|
|
let i = 0
|
|
else
|
|
let rv += 1
|
|
let i = (i + 1) % &ts
|
|
endif
|
|
endfor
|
|
|
|
return rv
|
|
endfunction
|
|
endif
|
|
|
|
" Align a string within a field {{{2
|
|
" These functions do not trim leading and trailing spaces.
|
|
|
|
" Right align 'string' in a field of size 'fieldwidth'
|
|
function! s:Right(string, fieldwidth)
|
|
let spaces = a:fieldwidth - s:Strlen(a:string)
|
|
return matchstr(a:string, '^\s*') . repeat(" ", spaces) . substitute(a:string, '^\s*', '', '')
|
|
endfunction
|
|
|
|
" Left align 'string' in a field of size 'fieldwidth'
|
|
function! s:Left(string, fieldwidth)
|
|
let spaces = a:fieldwidth - s:Strlen(a:string)
|
|
return a:string . repeat(" ", spaces)
|
|
endfunction
|
|
|
|
" Center align 'string' in a field of size 'fieldwidth'
|
|
function! s:Center(string, fieldwidth)
|
|
let spaces = a:fieldwidth - s:Strlen(a:string)
|
|
let right = spaces / 2
|
|
let left = right + (right * 2 != spaces)
|
|
return repeat(" ", left) . a:string . repeat(" ", right)
|
|
endfunction
|
|
|
|
" Remove spaces around a string {{{2
|
|
|
|
" Remove all trailing spaces from a string.
|
|
function! s:StripTrailingSpaces(string)
|
|
return matchstr(a:string, '^.\{-}\ze\s*$')
|
|
endfunction
|
|
|
|
" Remove all leading spaces from a string.
|
|
function! s:StripLeadingSpaces(string)
|
|
return matchstr(a:string, '^\s*\zs.*$')
|
|
endfunction
|
|
|
|
" Split a string into fields and delimiters {{{2
|
|
" Like split(), but include the delimiters as elements
|
|
" All odd numbered elements are delimiters
|
|
" All even numbered elements are non-delimiters (including zero)
|
|
function! s:SplitDelim(string, delim)
|
|
let rv = []
|
|
let beg = 0
|
|
|
|
let len = len(a:string)
|
|
let searchoff = 0
|
|
|
|
while 1
|
|
let mid = match(a:string, a:delim, beg + searchoff, 1)
|
|
if mid == -1 || mid == len
|
|
break
|
|
endif
|
|
|
|
let matchstr = matchstr(a:string, a:delim, beg + searchoff, 1)
|
|
let length = strlen(matchstr)
|
|
|
|
if length == 0 && beg == mid
|
|
" Zero-length match for a zero-length delimiter - advance past it
|
|
let searchoff += 1
|
|
continue
|
|
endif
|
|
|
|
if beg == mid
|
|
let rv += [ "" ]
|
|
else
|
|
let rv += [ a:string[beg : mid-1] ]
|
|
endif
|
|
|
|
let rv += [ matchstr ]
|
|
|
|
let beg = mid + length
|
|
let searchoff = 0
|
|
endwhile
|
|
|
|
let rv += [ strpart(a:string, beg) ]
|
|
|
|
return rv
|
|
endfunction
|
|
|
|
" Replace lines from `start' to `start + len - 1' with the given strings. {{{2
|
|
" If more lines are needed to show all strings, they will be added.
|
|
" If there are too few strings to fill all lines, lines will be removed.
|
|
function! s:SetLines(start, len, strings)
|
|
if a:start > line('$') + 1 || a:start < 1
|
|
throw "Invalid start line!"
|
|
endif
|
|
|
|
if len(a:strings) > a:len
|
|
let fensave = &fen
|
|
let view = winsaveview()
|
|
call append(a:start + a:len - 1, repeat([''], len(a:strings) - a:len))
|
|
call winrestview(view)
|
|
let &fen = fensave
|
|
elseif len(a:strings) < a:len
|
|
let fensave = &fen
|
|
let view = winsaveview()
|
|
sil exe (a:start + len(a:strings)) . ',' . (a:start + a:len - 1) . 'd_'
|
|
call winrestview(view)
|
|
let &fen = fensave
|
|
endif
|
|
|
|
call setline(a:start, a:strings)
|
|
endfunction
|
|
|
|
" Runs the given commandstring argument as an expression. {{{2
|
|
" The commandstring expression is expected to reference the a:lines argument.
|
|
" If the commandstring expression returns a list the items of that list will
|
|
" replace the items in a:lines, otherwise the expression is assumed to have
|
|
" modified a:lines itself.
|
|
function! s:FilterString(lines, commandstring)
|
|
exe 'let rv = ' . a:commandstring
|
|
|
|
if type(rv) == type(a:lines) && rv isnot a:lines
|
|
call filter(a:lines, 0)
|
|
call extend(a:lines, rv)
|
|
endif
|
|
endfunction
|
|
|
|
" Public API {{{1
|
|
|
|
if !exists("g:tabular_default_format")
|
|
let g:tabular_default_format = "l1"
|
|
endif
|
|
|
|
let s:formatelempat = '\%([lrc]\d\+\)'
|
|
|
|
function! tabular#ElementFormatPattern()
|
|
return s:formatelempat
|
|
endfunction
|
|
|
|
" Given a list of strings and a delimiter, split each string on every
|
|
" occurrence of the delimiter pattern, format each element according to either
|
|
" the provided format (optional) or the default format, and join them back
|
|
" together with enough space padding to guarantee that the nth delimiter of
|
|
" each string is aligned.
|
|
function! tabular#TabularizeStrings(strings, delim, ...)
|
|
if a:0 > 1
|
|
echoerr "TabularizeStrings accepts only 2 or 3 arguments (got ".(a:0+2).")"
|
|
return 1
|
|
endif
|
|
|
|
let formatstr = (a:0 ? a:1 : g:tabular_default_format)
|
|
|
|
if formatstr !~? s:formatelempat . '\+'
|
|
echoerr "Tabular: Invalid format \"" . formatstr . "\" specified!"
|
|
return 1
|
|
endif
|
|
|
|
let format = split(formatstr, s:formatelempat . '\zs')
|
|
|
|
let lines = map(a:strings, 's:SplitDelim(v:val, a:delim)')
|
|
|
|
" Strip spaces
|
|
" - Only from non-delimiters; spaces in delimiters must have been matched
|
|
" intentionally
|
|
" - Don't strip leading spaces from the first element; we like indenting.
|
|
for line in lines
|
|
if len(line) == 1 && s:do_gtabularize
|
|
continue " Leave non-matching lines unchanged for GTabularize
|
|
endif
|
|
|
|
if line[0] !~ '^\s*$'
|
|
let line[0] = s:StripTrailingSpaces(line[0])
|
|
endif
|
|
if len(line) >= 3
|
|
for i in range(2, len(line)-1, 2)
|
|
let line[i] = s:StripLeadingSpaces(s:StripTrailingSpaces(line[i]))
|
|
endfor
|
|
endif
|
|
endfor
|
|
|
|
" Find the max length of each field
|
|
let maxes = []
|
|
for line in lines
|
|
if len(line) == 1 && s:do_gtabularize
|
|
continue " non-matching lines don't affect field widths for GTabularize
|
|
endif
|
|
|
|
for i in range(len(line))
|
|
if i == len(maxes)
|
|
let maxes += [ s:Strlen(line[i]) ]
|
|
else
|
|
let maxes[i] = max( [ maxes[i], s:Strlen(line[i]) ] )
|
|
endif
|
|
endfor
|
|
endfor
|
|
|
|
let lead_blank = empty(filter(copy(lines), 'v:val[0] =~ "\\S"'))
|
|
|
|
" Concatenate the fields, according to the format pattern.
|
|
for idx in range(len(lines))
|
|
let line = lines[idx]
|
|
|
|
if len(line) == 1 && s:do_gtabularize
|
|
let lines[idx] = line[0] " GTabularize doesn't change non-matching lines
|
|
continue
|
|
endif
|
|
|
|
for i in range(len(line))
|
|
let how = format[i % len(format)][0]
|
|
let pad = format[i % len(format)][1:-1]
|
|
|
|
if how =~? 'l'
|
|
let field = s:Left(line[i], maxes[i])
|
|
elseif how =~? 'r'
|
|
let field = s:Right(line[i], maxes[i])
|
|
elseif how =~? 'c'
|
|
let field = s:Center(line[i], maxes[i])
|
|
endif
|
|
|
|
let line[i] = field . (lead_blank && i == 0 ? '' : repeat(" ", pad))
|
|
endfor
|
|
|
|
let lines[idx] = s:StripTrailingSpaces(join(line, ''))
|
|
endfor
|
|
endfunction
|
|
|
|
" Apply 0 or more filters, in sequence, to selected text in the buffer {{{2
|
|
" The lines to be filtered are determined as follows:
|
|
" If the function is called with a range containing multiple lines, then
|
|
" those lines will be used as the range.
|
|
" If the function is called with no range or with a range of 1 line, then
|
|
" if GTabularize mode is being used,
|
|
" the range will not be adjusted
|
|
" if "includepat" is not specified,
|
|
" that 1 line will be filtered,
|
|
" if "includepat" is specified and that line does not match it,
|
|
" no lines will be filtered
|
|
" if "includepat" is specified and that line does match it,
|
|
" all contiguous lines above and below the specified line matching the
|
|
" pattern will be filtered.
|
|
"
|
|
" The remaining arguments must each be a filter to apply to the text.
|
|
" Each filter must either be a String evaluating to a function to be called.
|
|
function! tabular#PipeRange(includepat, ...) range
|
|
exe a:firstline . ',' . a:lastline
|
|
\ . 'call tabular#PipeRangeWithOptions(a:includepat, a:000, {})'
|
|
endfunction
|
|
|
|
" Extended version of tabular#PipeRange, which
|
|
" 1) Takes the list of filters as an explicit list rather than as varargs
|
|
" 2) Supports passing a dictionary of options to control the routine.
|
|
" Currently, the only supported option is 'mode', which determines whether
|
|
" to behave as :Tabularize or as :GTabularize
|
|
" This allows me to add new features here without breaking API compatibility
|
|
" in the future.
|
|
function! tabular#PipeRangeWithOptions(includepat, filterlist, options) range
|
|
let top = a:firstline
|
|
let bot = a:lastline
|
|
|
|
let s:do_gtabularize = (get(a:options, 'mode', '') ==# 'GTabularize')
|
|
|
|
if !s:do_gtabularize
|
|
" In the default mode, apply range extension logic
|
|
if a:includepat != '' && top == bot
|
|
if top < 0 || top > line('$') || getline(top) !~ a:includepat
|
|
return
|
|
endif
|
|
while top > 1 && getline(top-1) =~ a:includepat
|
|
let top -= 1
|
|
endwhile
|
|
while bot < line('$') && getline(bot+1) =~ a:includepat
|
|
let bot += 1
|
|
endwhile
|
|
endif
|
|
endif
|
|
|
|
let lines = map(range(top, bot), 'getline(v:val)')
|
|
|
|
for filter in a:filterlist
|
|
if type(filter) != type("")
|
|
echoerr "PipeRange: Bad filter: " . string(filter)
|
|
endif
|
|
|
|
call s:FilterString(lines, filter)
|
|
|
|
unlet filter
|
|
endfor
|
|
|
|
call s:SetLines(top, bot - top + 1, lines)
|
|
endfunction
|
|
|
|
" Part of the public interface so interested pipelines can query this and
|
|
" adjust their behavior appropriately.
|
|
function! tabular#DoGTabularize()
|
|
return s:do_gtabularize
|
|
endfunction
|
|
|
|
function! s:SplitDelimTest(string, delim, expected)
|
|
let result = s:SplitDelim(a:string, a:delim)
|
|
|
|
if result !=# a:expected
|
|
echomsg 'Test failed!'
|
|
echomsg ' string=' . string(a:string) . ' delim=' . string(a:delim)
|
|
echomsg ' Returned=' . string(result)
|
|
echomsg ' Expected=' . string(a:expected)
|
|
endif
|
|
endfunction
|
|
|
|
function! tabular#SplitDelimUnitTest()
|
|
let assignment = '[|&+*/%<>=!~-]\@<!\([<>!=]=\|=\~\)\@![|&+*/%<>=!~-]*='
|
|
let two_spaces = ' '
|
|
let ternary_operator = '^.\{-}\zs?\|:'
|
|
let cpp_io = '<<\|>>'
|
|
let pascal_assign = ':='
|
|
let trailing_c_comments = '\/\*\|\*\/\|\/\/'
|
|
|
|
call s:SplitDelimTest('a+=b', assignment, ['a', '+=', 'b'])
|
|
call s:SplitDelimTest('a-=b', assignment, ['a', '-=', 'b'])
|
|
call s:SplitDelimTest('a!=b', assignment, ['a!=b'])
|
|
call s:SplitDelimTest('a==b', assignment, ['a==b'])
|
|
call s:SplitDelimTest('a&=b', assignment, ['a', '&=', 'b'])
|
|
call s:SplitDelimTest('a|=b', assignment, ['a', '|=', 'b'])
|
|
call s:SplitDelimTest('a=b=c', assignment, ['a', '=', 'b', '=', 'c'])
|
|
|
|
call s:SplitDelimTest('a b c', two_spaces, ['a', ' ', 'b', ' ', 'c'])
|
|
call s:SplitDelimTest('a b c', two_spaces, ['a b', ' ', ' c'])
|
|
call s:SplitDelimTest('ab c', two_spaces, ['ab', ' ', '', ' ', 'c'])
|
|
|
|
call s:SplitDelimTest('a?b:c', ternary_operator, ['a', '?', 'b', ':', 'c'])
|
|
|
|
call s:SplitDelimTest('a<<b<<c', cpp_io, ['a', '<<', 'b', '<<', 'c'])
|
|
|
|
call s:SplitDelimTest('a:=b=c', pascal_assign, ['a', ':=', 'b=c'])
|
|
|
|
call s:SplitDelimTest('x//foo', trailing_c_comments, ['x', '//', 'foo'])
|
|
call s:SplitDelimTest('x/*foo*/',trailing_c_comments, ['x', '/*', 'foo', '*/', ''])
|
|
|
|
call s:SplitDelimTest('#ab#cd#ef', '[^#]*', ['#', 'ab', '#', 'cd', '#', 'ef', ''])
|
|
call s:SplitDelimTest('#ab#cd#ef', '#\zs', ['#', '', 'ab#', '', 'cd#', '', 'ef'])
|
|
endfunction
|
|
|
|
" Stupid vimscript crap, part 2 {{{1
|
|
let &cpo = s:savecpo
|
|
unlet s:savecpo
|
|
|
|
" vim:set sw=2 sts=2 fdm=marker:
|