101 lines
3 KiB
VimL
101 lines
3 KiB
VimL
" Vimwiki filetype plugin file
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" filetype: ledger
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" Version: 0.1.0
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" by Johann Klähn; Use according to the terms of the GPL>=2.
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" vim:ts=2:sw=2:sts=2:foldmethod=marker
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if exists("b:did_ftplugin")
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finish
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endif
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let b:did_ftplugin = 1
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let b:undo_ftplugin = "setlocal ".
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\ "foldmethod< foldtext< ".
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\ "include< comments< "
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" don't fill fold lines --> cleaner look
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setl fillchars="fold: "
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setl foldtext=LedgerFoldText()
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setl foldmethod=syntax
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setl include=^!include
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setl comments=b:;
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" You can set a maximal number of columns the fold text (excluding amount)
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" will use by overriding g:ledger_maxwidth in your .vimrc.
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" When maxwidth is zero, the amount will be displayed at the far right side
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" of the screen.
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if !exists('g:ledger_maxwidth')
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let g:ledger_maxwidth = 0
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endif
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let s:rx_amount = '\('.
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\ '\%([0-9]\+\)'.
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\ '\%([,.][0-9]\+\)*'.
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\ '\|'.
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\ '[,.][0-9]\+'.
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\ '\)'.
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\ '\s*\%([[:alpha:]¢$€£]\+\s*\)\?'.
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\ '\%(\s*;.*\)\?$'
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function! LedgerFoldText() "{{{1
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" find amount
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let amount = ""
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let lnum = v:foldstart
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while lnum <= v:foldend
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let line = getline(lnum)
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" Skip metadata/leading comment
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if line !~ '^\s\+;'
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" No comment, look for amount...
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let groups = matchlist(line, s:rx_amount)
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echomsg string(groups)
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if ! empty(groups)
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echomsg amount
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let amount = groups[1]
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break
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endif
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endif
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let lnum += 1
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endwhile
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let fmt = '%s %s '
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" strip whitespace at beginning and end of line
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let foldtext = substitute(getline(v:foldstart),
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\ '\(^\s\+\|\s\+$\)', '', 'g')
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" number of columns foldtext can use
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let columns = s:get_columns(0)
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if g:ledger_maxwidth
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let columns = min([columns, g:ledger_maxwidth])
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endif
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let columns -= s:multibyte_strlen(printf(fmt, '', amount))
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" add spaces so the text is always long enough when we strip it
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" to a certain width (fake table)
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let foldtext .= repeat(' ', s:get_columns(0))
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" we don't use slices[:5], because that messes up multibyte characters
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let foldtext = substitute(foldtext, '.\{'.columns.'}\zs.*$', '', '')
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return printf(fmt, foldtext, amount)
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endfunction "}}}
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" Helper functions {{{1
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function! s:multibyte_strlen(text) "{{{2
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return strlen(substitute(a:text, ".", "x", "g"))
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endfunction "}}}
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function s:get_columns(win) "{{{2
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" As long as vim doesn't provide a command natively,
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" we have to compute the available columns.
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" see :help todo.txt -> /Add argument to winwidth()/
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" FIXME: Although this will propably never be used with debug mode enabled
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" this should take the signs column into account (:help sign.txt)
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let columns = (winwidth(a:win) == 0 ? 80 : winwidth(a:win)) - &foldcolumn
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if &number
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" line('w$') is the line number of the last line
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let columns -= max([len(line('w$'))+1, &numberwidth])
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endif
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return columns
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endfunction "}}}
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