#compdef osc
#
# Copyright (C) 2009,2010 Holger Macht <holger@homac.de>
#
# This file is released under the GPLv2.
#
# Based on the zsh guide from http://zsh.dotsrc.org/Guide/zshguide06.html
#
# Toggle verbose completions: zstyle ':completion:*:osc:*' verbose no
#                             zstyle ':completion:*:osc-subcommand:*' verbose no
# 
# Use the variables $ZSH_OSC_BUILD_TARGETS_EXTRA and $ZSH_OSC_PROJECTS_EXTRA to
# extend the list of possible completions in your ~/.zshrc like that:
#  export OSC_PROJECTS_EXTRA="Base:System Base:shells"
#
# version 0.2
#

OSC_BUILD_TARGETS="openSUSE_12.1 openSUSE_12.2 openSUSE_12.3 openSUSE_Tumbleweed openSUSE_Factory SLE_11_SP2"
OSC_PROJECTS="openSUSE:Factory openSUSE:Tumbleweed openSUSE:12.3 openSUSE:12.2 openSUSE:12.1"

# user defined variables $OSC_BUILD_TARGETS_EXTRA and
# $OSC_PROJECTS_EXTRA can add to the project/build target list
OSC_BUILD_TARGETS="$OSC_BUILD_TARGETS $ZSH_OSC_BUILD_TARGETS_EXTRA"
OSC_PROJECTS="$OSC_PROJECTS $ZSH_OSC_PROJECTS_EXTRA"

# Main dispatcher

_osc() {
    if (( CURRENT > 2 )) && [[ ${words[2]} != "help" ]]; then
        # Remember the subcommand name
	local cmd=${words[2]}
        # Set the context for the subcommand.
	curcontext="${curcontext%:*:*}:osc-subcommand"
        # Narrow the range of words we are looking at to exclude `osc'
	(( CURRENT-- ))
	shift words
        # Run the completion for the subcommand
	if [ "$cmd" = "submitreq" -o "$cmd" = "sr" ]; then
	    _osc_cmd_submitreq
	elif [ "$cmd" = "getbinaries" ]; then
	    _osc_cmd_getbinaries
	elif [ "$cmd" = "checkout" -o "$cmd" = "co" -o "$cmd" = "branch" ]; then
	    _osc_cmd_checkout
	elif [ "$cmd" = "buildlog" -o "$cmd" = "buildinfo" -o "$cmd" = "bl" ]; then
	    _osc_cmd_buildlog
	else
	    _osc_cmd_do $cmd
	fi
    else
	local hline
	local -a cmdlist
	local tag=0
	_call_program help-commands osc help | while read -A hline; do
	    # start parsing with "commands:"
	    [[ $hline[1] = "commands:" ]] && tag=1
	    # stop parsing at the line starting with "For"
	    [[ $hline[1] = "For" ]] && tag=0
	    [[ $tag = 0 ]] && continue
	    # all commands have to start with lower case letters
	    [[ $hline[1] =~ ^[A-Z] ]] && continue
	    (( ${#hline} < 2 )) && continue

    	    # ${hline[1]%,} truncates the last ','
	    cmdlist=($cmdlist "${hline[1]%,}:${hline[2,-1]}")
	done
	_describe -t osc-commands 'osc command' cmdlist
    fi
}

_osc_cmd_getbinaries() {
    _arguments \
	'1:PROJECT:( `echo $OSC_PROJECTS` )' \
	'2:PACKAGE:(PACKAGE)' \
	'3:REPOSITORY:( `echo $OSC_BUILD_TARGETS` )' \
	'4:ARCHITECTURE:(i586 x86_64)'
}

_osc_cmd_checkout() {
    _arguments \
	'1:PROJECT:( `echo $OSC_PROJECTS` )' \
	'2:PACKAGE:(PACKAGE)'
}

_osc_cmd_buildlog() {
    _arguments \
	'1:REPOSITORY:( `echo $OSC_BUILD_TARGETS` )' \
	'2:ARCHITECTURE:(i586 x86_64)'
}

_osc_cmd_submitreq() {
    local hline
    local -a cmdlist
    local tag=0
    _call_program help-commands osc help $cmd | while read -A hline; do
        # start parsing from "usage:"
	[[ $hline[1] = "usage:" ]] && tag=1
	[[ $tag = 0 ]] && continue

	if [[ $hline[1] =~ ^osc ]]; then
	    shift hline; shift hline
	elif ! [[ $hline[1] =~ ^- ]]; then
            # Option has to start with a '-' or 'osc submitrequest'
	    continue
	fi

	(( ${#hline} < 2 )) && continue

	cmdlist=($cmdlist "${hline[1]%,}:${hline[2,-1]}")

    done
    
    _describe -t osc-commands 'osc command' cmdlist
}


_osc_cmd_do() {
    local hline
    local -a cmdlist
    local tag=0
    
    # only start completion if theres some '-' on the line
    if ! [ "$words[2]" = "-" ]; then
	_complete
	return
    fi

    _call_program help-commands osc help $cmd | while read -A hline; do
	# start parsing from "Options:"
	[[ $hline[1] = "Options:" ]] && tag=1
	[[ $tag = 0 ]] && continue
	# Option has to start with a '-'
	[[ $hline[1] =~ ^- ]] || continue
	(( ${#hline} < 2 )) && continue

	cmdlist=($cmdlist "${hline[1]%,}:${hline[2,-1]}")
    done

    if [ -n "$cmdlist" ]; then
	_describe -t osc-commands 'osc command' cmdlist
    else
	_complete
    fi
}

# Code to make sure _osc is run when we load it
_osc "$@"