" Plugin to update the %changelog section of RPM spec files
" Filename: spec.vim
" Maintainer: Gustavo Niemeyer <niemeyer@conectiva.com>
" Last Change: Thu, 03 May 2001 14:52:48 -0300

if exists("b:did_ftplugin")
	finish
endif
let b:did_ftplugin = 1

if !exists("no_plugin_maps") && !exists("no_spec_maps")
	if !hasmapto("<Plug>SpecChangelog")
		map <buffer> <LocalLeader>c <Plug>SpecChangelog
	endif
endif

noremap <buffer> <unique> <script> <Plug>SpecChangelog :call <SID>SpecChangelog("")<CR>

if !exists("*s:SpecChangelog")
	function s:SpecChangelog(format)
		if strlen(a:format) == 0
			if !exists("g:spec_chglog_format")
				let email = input("Email address: ")
				let g:spec_chglog_format = "%a %b %d %Y " . l:email
				echo "\r"
			endif
			let format = g:spec_chglog_format
		else
			if !exists("g:spec_chglog_format")
				let g:spec_chglog_format = a:format
			endif
			let format = a:format
		endif
		let line = 0
		let name = ""
		let ver = ""
		let rel = ""
		let nameline = -1
		let verline = -1
		let relline = -1
		let chgline = -1
		while (line <= line("$"))
			let linestr = getline(line)
			if (name == "" && linestr =~? '^Name:')
				let nameline = line
				let name = substitute(strpart(linestr,5), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
			elseif (ver == "" && linestr =~? '^Version:')
				let verline = line
				let ver = substitute(strpart(linestr,8), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
			elseif (rel == "" && linestr =~? '^Release:')
				let relline = line
				let rel = substitute(strpart(linestr,8), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
			elseif (linestr =~? '^%changelog')
				let chgline = line
				execute line
				break
			endif
			let line = line+1
		endwhile
		if (nameline != -1 && verline != -1 && relline != -1)
			let include_release_info = exists("g:spec_chglog_release_info")
		else
			let include_release_info = 0
		endif
		if (chgline == -1)
			let option = confirm("Can't find %changelog. Create one? ","&End of file\n&Here\n&Cancel",3)
			if (option == 1)
				call append(line("$"),"")
				call append(line("$"),"%changelog")
				execute line("$")
				let chgline = line(".")
			elseif (option == 2)
				call append(line("."),"%changelog")
				normal j
				chgline = line(".")
			endif
		endif
		if (chgline != -1)
			let parsed_format = "* ".strftime(format)
			let release_info = "+ ".name."-".ver."-".rel
			let wrong_format = 0
			let wrong_release = 0
			let insert_line = 0
			if (getline(chgline+1) != parsed_format)
				let wrong_format = 1
			endif
			if (include_release_info && getline(chgline+2) != release_info)
				let wrong_release = 1
			endif
			if (wrong_format || wrong_release)
				if (include_release_info && !wrong_release && !exists("g:spec_chglog_never_increase_release"))
					let option = confirm("Increase release? ","&Yes\n&No",1)
					if (option == 1)
						execute relline
						normal 

						let rel = substitute(strpart(getline(relline),8), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
						let release_info = "+ ".name."-".ver."-".rel
					endif
				endif
				let n = 0
				call append(chgline+n, parsed_format)
				if include_release_info
					let n = n + 1
					call append(chgline+n, release_info)
				endif
				let n = n + 1
				call append(chgline+n,"- ")
				let n = n + 1
				call append(chgline+n,"")
				let insert_line = chgline+n
			else
				let line = chgline
				if !exists("g:spec_chglog_prepend")
					while !(getline(line+2) =~ '^\( *\|\*.*\)$')
						let line = line+1
					endwhile
				endif
				call append(line+1,"- ")
				let insert_line = line+2
			endif
			execute insert_line
			startinsert!
		endif
	endfunction
endif