kshenoy’s gists

kshenoy / typedef.c

Created July 12, 2012 01:34

Use of typedefs with struct and enum in C/C++

	// 1a) Struct declaration and instantiation w/o typedef
	struct veg_t{
	int cost;
	char c;
	};
	struct veg_t potato;

	// 1b) or its equivalent with declaration and instantiation combined…
	struct veg_t{
	int cost;

kshenoy / MapKey.vim

Last active October 7, 2015 16:37

Function to complement the maparg() function in Vim. Given the 'rhs' of a mapping, this function returns the 'lhs'

	function! MapKey( rhs, mode )
	" Description: Get LHS of a mapping. Inverse of maparg().
	" Note that hasmapto() returns a binary result while MapKey() returns the value of the LHS.
	" Pass in a key sequence and the first letter of a vim mode.
	" Returns key mapping mapped to it in that mode, else '' if none.
	" Eg:
	" :nnoremap <Tab> :bn<CR>
	" :call Mapkey(':bn<CR>', 'n')
	" returns <Tab>
	" TODO:

kshenoy / ReTab.vim

Last active October 7, 2015 16:37

Vim function to perform easy retabs ( eg. change file with softtabstop=4 to softtabstop=2 )

	function! ReTab( tabsize )
	" Description: Change indentation when tab size is changed
	" Primarily used to convert an indentation of eg. 4 to 2 or vice-versa
	if &expandtab
	let l:tabstop_old = &tabstop
	let l:softtabstop_old = &softtabstop
	let l:shiftwidth_old = &shiftwidth

	let &tabstop = &softtabstop
	set noexpandtab

kshenoy / next_motion_mapping.vim

Last active December 12, 2015 02:28 — forked from sjl/next_motion_mapping.vim

	" Motion for "next/last object".
	" For example, 'din(' will go to the Next '()' pair and delete its contents.
	" and 'dip(' will go to the Previous '()' pair and delete its contents.

	onoremap an :<c-u>call <SID>NextTextObject('a', 'f')<cr>
	xnoremap an :<c-u>call <SID>NextTextObject('a', 'f')<cr>
	onoremap in :<c-u>call <SID>NextTextObject('i', 'f')<cr>
	xnoremap in :<c-u>call <SID>NextTextObject('i', 'f')<cr>

	onoremap ap :<c-u>call <SID>NextTextObject('a', 'F')<cr>

kshenoy / FoldAllBut.vim

Last active December 15, 2015 18:09

Function to open folds that have less than the specified number of lines

	function! FoldAllBut( foldminlines )
	" Description: Function to open folds that have less than the specified number of lines
	" We assume that the folds are initially closed
	" If a fold exists and is closed and has lesser number of lines than specified, open it and all nested folds
	" Note: This does not work on nested folds
	folddoclosed
	\ if (( foldclosed(".") >= 0 ) && ( foldclosedend(".") - foldclosed(".") + 1 < a:foldminlines ))
	\ exe 'normal! zO'
	\ endif
	endfunction

kshenoy / vim_re.txt

Created April 11, 2013 21:59

Vim Regular Expression demonstrating use of look-ahead zero-width assertion to replace all the commas on a line that aren't a part of a quoted string

	This uses positive look-ahead to check if there's a string ahead to substitute commas present outside quoted strings.

	s/\v,(([^"]"[^"]")[^"]$)@=/\|/g

	Explanation:

	* "[^"]*"

	Match a double-quoted string

kshenoy / pseudo_powerline.vim

Last active December 17, 2015 09:38

	" Statusline modifications, added Fugitive Status Line & Syntastic Error Message
	let g:last_mode = ''
	function! Mode()
	let l:mode = mode()

	if l:mode !=# g:last_mode
	let g:last_mode = l:mode

	hi User2 guifg=#005f00 guibg=#dfff00 gui=BOLD ctermfg=22 ctermbg=190 cterm=BOLD
	hi User3 guifg=#FFFFFF guibg=#414243 ctermfg=255 ctermbg=241

kshenoy / buffers_tabs.vim

Created May 16, 2013 19:40

Mapping to toggle between buffers and tabs

nnoremap <silent> <F8> :let notabs=!notabs<Bar>:if notabs<Bar>:tabo<Bar>:else<Bar>:tab ball<Bar>:tabn<Bar>:endif<CR>

kshenoy / VaryTabs.vim

Last active December 17, 2015 19:39

Insert tabs at start of line and spaces elsewhere

	function! VaryTabs()
	" Description: Make <Tab> put tabs at start of line and spaces elsewhere
	if &expandtab
	return "\<Tab>"
	else
	let nonwhite = matchend(getline('.'),'\S')
	if nonwhite < 0 \|\| col('.') <= nonwhite
	return "\<Tab>"
	else
	let pos = virtcol('.')

kshenoy / FoldText.vim

Last active April 21, 2019 06:03

Function to set the foldtext

	function! FoldText()
	" Description: Folding configuration
	let nucolwidth = &fdc + &number*&numberwidth
	let winwidth = winwidth(0) - nucolwidth - 3
	let foldlinecount = foldclosedend(v:foldstart) - foldclosed(v:foldstart) + 1
	let dashtext = strpart(string(v:folddashes),1,len(string(v:folddashes))-2)
	let foldinfo = "+" . dashtext . " Fold: " . string(v:foldlevel) . ", " . string(foldlinecount) . " lines "
	let firstline = strpart(getline(v:foldstart), 0 , winwidth - len(foldinfo))
	let fillcharcount = winwidth - len(firstline) - len(foldinfo)
	return firstline . repeat(" ",fillcharcount) . foldinfo

Kartik Shenoy kshenoy