#compdef prcs

local curcontext="$curcontext" state line subcmds
typeset -A opt_args

# lookup project names in the repository
# (this does not handle subprojects)

(( $+functions[_prcs_projects] )) ||
_prcs_projects() {
  local expl

  _wanted prcs-projects expl 'project name' compadd "$@" - \
      ${~opt_args[-R]:-${opt_args[--repository]:-${PRCS_REPOSITORY:-~/PRCS}}}/*(/:t)
}	   

# standard options for all subcommands 

(( $+functions[_prcs_arguments] )) ||
_prcs_arguments() {
  _arguments -s \
    '(-f --force)'{-f,--force}'[resolve interactive queries in some fixed way]' \
    '(-h -H --help)'{-h,-H,--help}'[print out help]' \
    '(-j --jobs)'{-j,--jobs=}'[spawn many child processes at once]:number:' \
    '(-l -L --long-format --long-long-format)'{-l,--long-format}'[long format]' \
    '(-l -L --long-format --long-long-format)'{-L,--long-long-format}'[longer format]' \
    '(-n --no-action)--no-action[show what would happen but leave files unchanged]' \
    '(-q --quiet)'{-q,--quiet}'[suppress normal informational messages]' \
    "--plain-format[don't break lines at screen width]" \
    '(-R --repository)'{-R,--repository=}'[specify the repository directory]:directory:_files -/' \
    "$@"
}

_arguments -C \
  '(* -)'{-h,-H,--help}'[print out help]' \
  '(* -)--version[display program version]' \
  '*:: :->subcmd' && return 0

if (( CURRENT == 1 )); then
  subcmds=(
    'admin:admin subcommand'
    'checkin:checkin project revision'
    'checkout:checkout project revision'
    'config:verify configuration'
    'delete:delete named revision of project'
    'depopulate:remove named files from project descriptor'
    'diff:show differences between two revisions'
    'execute:execute a command for each file in a project'
    'info:print information about versions of project'
    'merge:reconcile differences between working files and another revision'
    'package:package the project and all its revisions into packagefile'
    'populate:add named files to project descriptor'
    'rekey:set keywords in selected files'
    'unpackage:unpackage project in packagefile'
  )
  
  _describe -t commands 'prcs command' subcmds
  return
fi

curcontext="${curcontext%:*}-$words[1]:"

case "$words[1]" in
  admin)
    if (( CURRENT == 2 )); then
      subcmds=(
	'access:set the access permissions on the repository'
	'compress:instruct PRCS to save disk space for project'
	'init:create a repository entry'
	'pdelete:delete a repository entry'
	'pinfo:list all projects in the repository'
	'prename:rename a repository entry'
	'rebuild:reconstruct PRCS data files in the repository'
	'uncompress:instruct PRCS to save time in processing project'
      )
      _describe -t commands 'admin subcommand' subcmds
    else
      shift words
      (( --CURRENT ))
      curcontext="${curcontext%:*}-$words[1]:"
      case "$words[1]" in
	access|compress|init|pdelete|prename|rebuild)
          _prcs_arguments ':project name:_prcs_projects'
        ;;
	pinfo)
	  _prcs_arguments
	;;
	uncompress)
          _prcs_arguments \
	    '-i[expand the entire project immediately]' \
            ':project name:_prcs_projects'
        ;;
	*)
	  _message "unknown prcs administrative subfunction: $words[1]"
	;;
      esac
    fi
  ;;
  checkin)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '(-s --skilled-merge)'{-s,--skilled-merge}'[turn off most of the safety features of merge]' \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  checkout)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '(-p --preserve)'{-p,--preserve}'[preserve permissions on files that are checked out]' \
      '(-u --unlink)'{-u,--unlink}"[don't overwrite symbolic link references]" \
      '(-P --exclude-project-file)'{-P,--exclude-project-file}"[don't checkout the project file]" \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  config)
    _prcs_arguments
  ;;
  delete)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      ':project name:_prcs_projects'
  ;;
  depopulate)
    _prcs_arguments \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  diff)
    _prcs_arguments \
      '*'{-r+,--revision=}'[specify version of the project]:revision:' \
      '(-k --keywords)'{-k,--keywords}'[compare keywords too]' \
      '(-N --new)'{-N,--new}'[compare new files against empty files]' \
      '(-P --exclude-project-file)'{-P,--exclude-project-file}"[don't diff the project file]" \
      '--[introduce diff options]:*::diff options:=  _diff_options ${PRCS_DIFF_COMMAND:-diff}' \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  execute)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '--pre[list directories first]' \
      '(--pipe)--all[execute command once, with all files as arguments]' \
      '(--all)--pipe[supply file contents as the standard input]' \
      '--match[execute command on files matching a pattern]:pattern:' \
      '--not[execute command on files not matching a pattern]:pattern:' \
      '--:command: _command_names -e:*::arguments: _normal' \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  info)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '--sort=[set sorting type]:sorting type:(version date)' \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  merge)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '(-s --skilled-merge)'{-s,--skilled-merge}'[turn off most of the safety features of merge]' \
      '(-u --unlink)'{-u,--unlink}"[don't overwrite symbolic link references]" \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;
  package)
    _prcs_arguments \
      '(-r --revision)'{-r+,--revision=}'[specify version of the project]:revision:' \
      '(-z --compress)'{-z,--compress=}'[compress the output]' \
      ':project name:_prcs_projects' \
      ':file:_files'
  ;;
  populate)
    _prcs_arguments \
      '(-d --delete)'{-d,--delete=}'[perform optional deletions]' \
      ':project name:_prcs_projects' \
      '*:file or directory:_files'
  ;;    
  rekey)
    _prcs_arguments \
      '(-u --unlink)'{-u,--unlink}"[don't overwrite symbolic link references]" \
      ':project name:_prcs_projects'
  ;;    
  unpackage)
    _prcs_arguments \
      ':file:_files' \
      ':project name:_prcs_projects'
  ;;
  *)
    _message "unknown prcs command: $words[1]"
  ;;
esac