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|
#encoding: ASCII-8BIT
# module : base/switch
# copyright : PRAGMA Advanced Document Engineering
# version : 2002-2005
# author : Hans Hagen
#
# project : ConTeXt / eXaMpLe
# concept : Hans Hagen
# info : j.hagen@xs4all.nl
# www : www.pragma-ade.com
# we cannot use getoptlong because we want to be more
# tolerant; also we want to be case insensitive (2002).
# 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
require "rbconfig"
$mswindows = RbConfig::CONFIG['host_os'] =~ /mswin/
$separator = File::PATH_SEPARATOR
class String
def has_suffix?(suffix)
self =~ /\.#{suffix}$/i
end
end
# may move to another module
class File
@@update_eps = 1
def File.needsupdate(oldname,newname)
begin
oldtime = File.stat(oldname).mtime.to_i
newtime = File.stat(newname).mtime.to_i
if newtime >= oldtime then
return false
elsif oldtime-newtime < @@update_eps then
return false
else
return true
end
rescue
return true
end
end
def File.syncmtimes(oldname,newname)
return
begin
if $mswindows then
# does not work (yet) / gives future timestamp
# t = File.mtime(oldname) # i'm not sure if the time is frozen, so we do it here
# File.utime(0,t,oldname,newname)
else
t = File.mtime(oldname) # i'm not sure if the time is frozen, so we do it here
File.utime(0,t,oldname,newname)
end
rescue
end
end
def File.timestamp(name)
begin
"#{File.stat(name).mtime}"
rescue
return 'unknown'
end
end
end
# main thing
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
@forcenewline, @versiondone, @error = false, false, false
version if @commandline.option('version')
end
def reportlines(*str)
@logger.reportlines(str)
end
# only works in 1.8
#
# def report(*str)
# @logger.report(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 report(*str)
initlogger ; @logger.report(str)
end
def seterror
@error = true
end
def error?
return @error
end
def exit
if @error then Kernel.exit(1) else Kernel.exit(0) end
end
def execute(str=nil)
send(str || action || 'main')
exit
end
def debug(*str)
initlogger ; @logger.debug(str)
end
def error(*str)
initlogger ; @logger.error(str)
end
def initlogger
if @forcenewline then
@logger.report
@forcenewline = false
end
end
def logger
@logger
end
def version # just a bit of playing with defs
unless @versiondone then
report(@banner.join(' - '))
@forcenewline = true
@versiondone = true
end
end
def help
version # is nilled when already given
@commandline.helpkeys.each do |k|
if @commandline.help?(k) then
kstr = ('--'+k).ljust(@commandline.helplength+2)
message = @commandline.helptext(k)
message = '' if message == CommandLine::NOHELP
message = message.split(/\s*\n\s*/)
loop do
report("#{kstr} #{message.shift}")
kstr = ' '*kstr.length
break if message.length == 0
end
end
end
end
def option(key)
@commandline.option(key)
end
def oneof(*key)
@commandline.oneof(*key)
end
def globfiles(pattern='*',suffix=nil)
@commandline.setarguments([pattern].flatten)
if files = findfiles(suffix) then
@commandline.setarguments(files)
else
@commandline.setarguments
end
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}$/
end
# not {} safe
pattern = '**/' + pattern if @commandline.option('recurse')
files = Dir[pattern]
if files && files.length>0 then
return files
else
pattern = @commandline.argument('first')
if FileTest.file?(pattern) then
return [pattern]
else
report("no files match pattern #{pattern}")
return nil
end
end
end
end
def globbed(pattern,recurse=false)
files = Array.new
pattern.split(' ').each do |p|
if recurse then
if p =~ /^(.*)(\/.*?)$/i then
p = $1 + '/**' + $2
else
p = '**/' + p
end
p.gsub!(/[\\\/]+/, '/')
end
files.push(Dir.glob(p))
end
files.flatten.sort do |a,b|
pathcompare(a,b)
end
end
def pathcompare(a,b)
aa, bb = a.split('/'), b.split('/')
if aa.length == bb.length then
aa.each_index do |i|
if aa[i]<bb[i] then
return -1
elsif aa[i]>bb[i] then
return +1
end
end
return 0
else
return aa.length <=> bb.length
end
end
end
class CommandLine
VALUE, FLAG = 1, 2
NOHELP = 'no arguments'
def initialize(prefix='-')
@registered = Array.new
@options = Hash.new
@unchecked = Hash.new
@arguments = Array.new
@original = ARGV.join(' ')
@helptext = Hash.new
@mandated = Hash.new
@provided = Hash.new
@prefix = prefix
@actions = Array.new
# The quotes in --switch="some value" get lost in ARGV, so we need to do some trickery here.
@original = ''
ARGV.each do |a|
aa = a.strip.gsub(/^([#{@prefix}]+\w+\=)([^\"].*?\s+.*[^\"])$/) do
$1 + "\"" + $2 + "\""
end
@original += if @original.empty? then '' else ' ' end + aa
end
end
def setarguments(args=[])
@arguments = if args then args else [] end
end
def register(option,shortcut,kind,default=false,action=false,helptext='')
if kind == FLAG then
@options[option] = default
elsif not default then
@options[option] = ''
else
@options[option] = default
end
@registered.push([option,shortcut,kind])
@mandated[option] = false
# @provided[option] = false
@helptext[option] = helptext
@actions.push(option) if action
end
def registerflag(option,default=false,helptext='')
if default.class == String then
register(option,'',FLAG,false,false,default)
else
register(option,'',FLAG,false,false,helptext)
end
end
def registervalue(option,default='',helptext='')
register(option,'',VALUE,default,false,helptext)
end
def registeraction(option,helptext='')
register(option,'',FLAG,false,true,helptext)
end
def registermandate(*option)
[*option].each do |o|
[o].each do |oo|
@mandated[oo] = true
end
end
end
def actions
a = @actions.delete_if do |t|
! option(t)
end
if a && a.length>0 then
return a
else
return nil
end
end
def action
@actions.each do |t|
return t if option(t)
end
return nil
end
def forgotten
@mandated.keys.sort - @provided.keys.sort
end
def registerhelp(option,text='')
@helptext['unknown'] = if text.empty? then option else text end
end
def helpkeys(option='.*')
@helptext.keys.sort.grep(/#{option}/)
end
def helptext(option)
@helptext.fetch(option,'')
end
def help?(option)
@helptext[option] && ! @helptext[option].empty?
end
def helplength
n = 0
@helptext.keys.each do |h|
n = h.length if h.length>n
end
return n
end
def expand
# todo : '' or false, depending on type
# @options.clear
# @arguments.clear
dirtyvalue(@original).split(' ').each do |arg|
case arg
when /^[#{@prefix}][#{@prefix}](.+?)\=(.*?)$/ 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,default=nil)
if @options.key?(str) then
@options[str]
elsif default then
default
else
@options[str]
end
end
def checkedoption(str,default='')
if @options.key?(str) then
if @options[str].empty? then default else @options[str] end
else
default
end
end
def foundoption(str,default='')
str = str.split(',') if str.class == String
str.each do |s|
return str if @options.key?(str)
end
return default
end
def oneof(*key)
[*key].flatten.compact.each do |k|
return true if @options.key?(k) && @options[k]
end
return false
end
def setoption(str,value)
@options[str] = value
end
def getoption(str,value='') # value ?
@options[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) # \xFF suddenly doesn't work any longer
if value then
value.gsub(/([\"\'])(.*?)\1/) do
$2.gsub(/\s+/o, "\0xFF")
end
else
''
end
end
def cleanvalue(value) # \xFF suddenly doesn't work any longer
if value then
# value.sub(/^([\"\'])(.*?)\1$/) { $2.gsub(/\xFF/o, ' ') }
value.gsub(/\0xFF/o, ' ')
else
''
end
end
def locatedouble(key, value)
foundkey, foundkind = nil, nil
@registered.each do |option, shortcut, kind|
if option == key then
foundkey, foundkind = option, kind
break
end
end
unless foundkey then
@registered.each do |option, shortcut, kind|
n = 0
begin
re = /^#{key}/i
rescue
key = key.inspect.sub(/^\"(.*)\"$/) do $1 end
re = /^#{key}/i
ensure
if option =~ re then
case n
when 0
foundkey, foundkind, n = option, kind, 1
when 1
# ambiguous matches, like --fix => --fixme --fixyou
foundkey, foundkind = nil, nil
break
end
end
end
end
end
if foundkey then
@provided[foundkey] = true
if foundkind == VALUE then
@options[foundkey] = cleanvalue(value)
else
@options[foundkey] = true
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_char do |key| # was .each but there is no alias to each_char any longer
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")
|