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|
# module : xmpl/switch
# copyright : PRAGMA Publishing On Demand
# version : 1.00 - 2002
# author : Hans Hagen
#
# project : eXaMpLe
# concept : Hans Hagen
# info : j.hagen@xs4all.nl
# www : www.pragma-pod.com / www.pragma-ade.com
# we cannot use getoptlong because we want to be more
# tolerant; also we want to be case insensitive.
# we could make each option a class itself, but this is
# simpler; also we can put more in the array
# beware: regexps/o in methods are optimized globally
class String
def has_suffix?(suffix)
self =~ /\.#{suffix}$/i
end
end
module CommandBase
# this module can be used as a mixin in a command handler
$stdout.sync = true
def initialize(commandline,logger,banner)
@commandline, @logger, @banner = commandline, logger, banner
version if @commandline.option('version')
end
def report(*str)
@logger.report(str)
end
def reportlines(*str)
@logger.reportlines(str)
end
def version # just a bit of playing with defs
report(@banner.join(' - '))
def report(*str)
@logger.report
@logger.report(str)
def report(*str)
@logger.report(str)
end
end
def version
end
end
def help
version # is nilled when already given
@commandline.helpkeys.each do |k|
report("#{('--'+k).ljust(@commandline.helplength+2)} #{@commandline.helptext(k)}") if @commandline.help?(k)
end
end
def option(key)
@commandline.option(key)
end
private
def findfiles(suffix=nil)
if @commandline.arguments.length>1 then
return @commandline.arguments
else
pattern = @commandline.argument('first')
pattern = '*' if pattern.empty?
if suffix && ! pattern.match(/\..+$/o) then
suffix = '.' + suffix
pattern += suffix unless pattern =~ /#{suffix}$/
end
pattern = '**/' + pattern if @commandline.option('recurse')
files = Dir[pattern]
if files && files.length>0 then
return files
else
report("no files match pattern #{pattern}")
return nil
end
end
end
def globbed(pattern,recurse=false)
files = Array.new
pattern.split(' ').each do |p|
p = '**/' + p if recurse
files.push(Dir.glob(p))
end
files.flatten.sort do |a,b|
pathcompare(a,b)
end
end
def pathcompare(a,b)
aa, bb = a.split('/'), b.split('/')
if aa.length == bb.length then
aa.each_index do |i|
if aa[i]<bb[i] then
return -1
elsif aa[i]>bb[i] then
return +1
end
end
return 0
else
return aa.length <=> bb.length
end
end
end
class CommandLine
VALUE, FLAG = 1, 2
def initialize(prefix='-')
@registered = Array.new
@options = Hash.new
@unchecked = Hash.new
@arguments = Array.new
@original = ARGV.join(' ')
@helptext = Hash.new
@mandated = Hash.new
@provided = Hash.new
@prefix = prefix
@actions = Array.new
# The quotes in --switch="some value" get lost in ARGV, so we need to do some trickery here.
@original = ''
ARGV.each do |a|
aa = a.strip.gsub(/^([#{@prefix}]+\w+\=)([^\"].*?\s+.*[^\"])$/) do
$1 + "\"" + $2 + "\""
end
@original += if @original.empty? then '' else ' ' end + aa
end
end
def register (option,shortcut,kind,default=false,action=false,helptext='')
if kind == FLAG then
@options[option] = default
elsif not default then
@options[option] = ''
else
@options[option] = default
end
@registered.push([option,shortcut,kind])
@mandated[option] = false
# @provided[option] = false
@helptext[option] = helptext
@actions.push(option) if action
end
def registerflag(option,default=false,helptext='')
if default.class == String then
register(option,'',FLAG,false,false,default)
else
register(option,'',FLAG,false,false,helptext)
end
end
def registervalue(option,default='',helptext='')
register(option,'',VALUE,default,false,helptext)
end
def registeraction(option,helptext='')
register(option,'',FLAG,false,true,helptext)
end
def registermandate(*option)
[*option].each do |o|
[o].each do |oo|
@mandated[oo] = true
end
end
end
def actions
a = @actions.delete_if do |t|
! option(t)
end
if a && a.length>0 then
return a
else
return nil
end
end
def action
@actions.each do |t|
return t if option(t)
end
return nil
end
def forgotten
@mandated.keys.sort - @provided.keys.sort
end
def registerhelp(option,text='')
@helptext['unknown'] = if text.empty? then option else text end
end
def helpkeys(option='.*')
@helptext.keys.sort.grep(/#{option}/)
end
def helptext(option)
@helptext.fetch(option,'')
end
def help?(option)
@helptext[option] && ! @helptext[option].empty?
end
def helplength
n = 0
@helptext.keys.each do |h|
n = h.length if h.length>n
end
return n
end
def expand
# todo : '' or false, depending on type
# @options.clear
# @arguments.clear
dirtyvalue(@original).split(' ').each do |arg|
case arg
when /^[#{@prefix}][#{@prefix}](.+?)\=(.*?)$/ then locatedouble($1,$2)
when /^[#{@prefix}][#{@prefix}](.+?)$/ then locatedouble($1,false)
when /^[#{@prefix}](.)\=(.)$/ then locatesingle($1,$2)
when /^[#{@prefix}](.+?)$/ then locateseries($1,false)
when /^[\+\-]+/o then # do nothing
else
arguments.push(arg)
end
end
@options or @unchecked or @arguments
end
def extend (str)
@original = @original + ' ' + str
end
def replace (str)
@original = str
end
def show
# print "-- options --\n"
@options.keys.sort.each do |key|
print "option: #{key} -> #{@options[key]}\n"
end
# print "-- arguments --\n"
@arguments.each_index do |key|
print "argument: #{key} -> #{@arguments[key]}\n"
end
end
def option(str)
@options[str] # @options.fetch(str,'')
end
def argument(n=0)
if n.class == String then
case n
when 'first' then argument(0)
when 'second' then argument(1)
when 'third' then argument(2)
else
argument(0)
end
elsif @arguments[n] then
@arguments[n]
else
''
end
end
# a few local methods, cannot be defined nested (yet)
private
def dirtyvalue(value)
if value then
value.gsub(/([\"\'])(.*?)\1/) do
$2.gsub(/\s+/o, "\xFF")
end
else
''
end
end
def cleanvalue(value)
if value then
# value.sub(/^([\"\'])(.*?)\1$/) { $2.gsub(/\xFF/o, ' ') }
value.gsub(/\xFF/o, ' ')
else
''
end
end
def locatedouble (key, value)
foundkey, foundkind = nil, nil
@registered.each do |option, shortcut, kind|
if option == key then
foundkey, foundkind = option, kind
break
end
end
unless foundkey then
@registered.each do |option, shortcut, kind|
n = 0
if option =~ /^#{key}/i then
case n
when 0
foundkey, foundkind = option, kind
n = 1
when 1
# ambiguous matches, like --fix => --fixme --fixyou
foundkey, foundkind = nil, nil
break
end
end
end
end
if foundkey then
@provided[foundkey] = true
if value.class == FalseClass then
@options[foundkey] = true
else
@options[foundkey] = if foundkind == VALUE then cleanvalue(value) else true end
end
else
if value.class == FalseClass then
@unchecked[key] = true
else
@unchecked[key] = cleanvalue(value)
end
end
end
def locatesingle (key, value)
@registered.each do |option, shortcut, kind|
if shortcut == key then
@provided[option] = true
@options[option] = if kind == VALUE then '' else cleanvalue(value) end
break
end
end
end
def locateseries (series, value)
series.each do |key|
locatesingle(key,cleanvalue(value))
end
end
public
attr_reader :arguments, :options, :original, :unchecked
end
# options = CommandLine.new
#
# options.register("filename", "f", CommandLine::VALUE)
# options.register("request" , "r", CommandLine::VALUE)
# options.register("verbose" , "v", CommandLine::FLAG)
#
# options.expand
# options.extend(str)
# options.show
#
# c = CommandLine.new
#
# c.registervalue('aaaa')
# c.registervalue('test')
# c.registervalue('zzzz')
#
# c.registerhelp('aaaa','some aaaa to enter')
# c.registerhelp('test','some text to enter')
# c.registerhelp('zzzz','some zzzz to enter')
#
# c.registermandate('test')
#
# c.expand
#
# class CommandLine
#
# def showhelp (banner,*str)
# if helpkeys(*str).length>0
# print banner
# helpkeys(*str).each do |h|
# print helptext(h) + "\n"
# end
# true
# else
# false
# end
# end
#
# def showmandate(banner)
# if forgotten.length>0
# print banner
# forgotten.each do |f|
# print helptext(f) + "\n"
# end
# true
# else
# false
# end
# end
#
# end
#
# c.showhelp("you can provide:\n\n")
# c.showmandate("you also need to provide:\n\n")
|