#!/bin/bash
Version=0.02
Myname=${0##*/}

:<<'DOC'
= cltex - remove TeX auxiliary/intermediate files

= Synopsis
cltex [options]	[directory]	

== Options
-h|--help	print short help and exit
-H|--Help	print full documentation and exit
-V|--version	print version and exit
-v|--verbose	run verbosely
-a|--all	include pdf, dvi and ps files
-d|--dryrun	do a dry run: show what would be removed
-r|--recursive	remove files recursively

= Description
cltex removes tex auxiliary/intermediate files for all TeX (|.tex, .dtx|
and |.ltx|) files in the current directory. With the |--all| option, pdf,
ps and dvi files are also removed. Files are removed from the given
directory, the current directory by default.With the |--recursive| option,
files are removed from subdirectories, too.

= Author
[Wybo Dekker](wybodekker@me.com)

= Copyright
Released under the [GNU General Public License](www.gnu.org/copyleft/gpl.html)
DOC

REd='\e[38;5;1m' Mag='\e[38;5;5m' Nor='\e[0m'
    die() { local i; for i; do echo -e "$Myname: $REd$i$Nor"; done 1>&2; exit 1; }
   Warn() { local i; for i; do echo -e "$Myname: $Mag$i$Nor"; done 1>&2; }
   warn() { $verbose && Warn "$@"; }
helpsrt() { sed -n '/^= Synopsis/,/^= /p' "$0"|sed '1d;$d'; exit; }
helpall() { sed -n "/^:<<'DOC'$/,/^DOC/p" "$0"|sed '1d;$d'|
            less -P"$Myname-${Version/./·} (press h for help, q to quit)";exit; }

cleanext='{4ct,4dx,4ix,4tc,aux,bbl,blg,chk,ent,fls,glg,glo,gls,hd,idv,idx,\
ilg,ind,ist,fdb_latexmk,latexmk,lg,lof,log,lot,out,soc,synctex.gz,t2d,tmp,\
toc,tuc,tui,tuo,xdv,xdy,xref}'

handle_options() {
   local options
   options=$(getopt \
      -n "$Myname" \
      -o hHVIvdra \
      -l help,Help,version,verbose,dryrun,recursive,all \
      -- "$@"
   ) || exit 1
   eval set -- "$options"
   verbose=false dryrun=false OPT='-maxdepth 1'

   while true; do
      case $1 in
      (-h|--help)	# print short help and exit
            helpsrt
            ;;
      (-H|--Help)	# print full documentation and exit
            helpall
            ;;
      (-V|--version)	# print version and exit
            echo $Version
            exit
            ;;
      (-v|--verbose)	# run verbosely
            verbose=true
            shift
            ;;
      (-a|--all)	# include pdf, dvi and ps files
	    cleanext=${cleanext/\}/,pdf,ps,dvi\}}
	    shift
	    ;;
      (-d|--dryrun)	# do a dry run: show what would be removed
	    dryrun=true
            shift
	    ;;
      (-r|--recursive)	# remove file recursively
	    OPT=''
            shift
	    ;;
      (-I)  instscript "$0" ||
	       die 'the -I option is for developers only'
            exit
	    ;;
      (--)  shift
            break
            ;;
      (*)   break
            ;;
      esac
   done
   args=( "$@" )
}

handle_options "$@"

case ${#args[@]} in
(1) cd "${args[0]}" 2>/dev/null ||
	 die "Could not find or enter directory ${args[0]}"
    ;;
(0) ;;
(*) die "I expect at most 1 directory, not  ${#args[@]}"
esac

mapfile -t args < <(eval "find . $OPT -name '*.tex' -o -name '*.dtx' -o -name '*.ltx'")

# beter hier eerst array vullen met te deleten files 
if $dryrun; then
   Warn "These files will be deleted without the --dryrun option:"
   for i in "${args[@]}"; do
      eval "ls -1 \"${i%???}\"$cleanext" 2>/dev/null
   done
else
   for i in "${args[@]}"; do
      eval "rm -rf \"${i%???}\"$cleanext"
   done
fi