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authorknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-05-07 18:46:39 +0000
committerknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2001-05-07 18:46:39 +0000
commitdbe06b680be2ecce3448a315b49ab0c4b738904b (patch)
tree199831c99b880a21e2020e1acc4b85e54fa402db /sample
parent581f7b863b1019fb4f6cfdea26f839c8c7639e12 (diff)
Obsoleted by IRB.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1373 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'sample')
-rw-r--r--sample/rbc.rb1015
1 files changed, 0 insertions, 1015 deletions
diff --git a/sample/rbc.rb b/sample/rbc.rb
deleted file mode 100644
index c1b2999..0000000
--- a/sample/rbc.rb
+++ /dev/null
@@ -1,1015 +0,0 @@
-#!/usr/local/bin/ruby
-#
-# rbc.rb -
-# $Release Version: 0.8 $
-# $Revision: 1.8 $
-# $Date: 1998/03/11 05:43:00 $
-# by Keiju ISHITSUKA(Nippon Rational Inc.)
-#
-# --
-# Usage:
-#
-# rbc.rb [options] file_name opts
-# options:
-# -d debug mode (not recommended)
-# -f does not read ~/.irbrc
-# -m bc mode (rational/matrix calc)
-# -r load-module same as `ruby -r'
-# --inspect use inspect for result output
-# (default for non-bc mode)
-# --noinspect does not use inspect for result output
-# --noreadline does not use readline library
-# (default: try to use readline)
-#
-# additional private method (as function):
-# exit, quit terminate the interpreter
-# inspect_mode(sw = nil) toggle inspect mode
-# trace_load(sw = nil) change trace mode for file loading using
-# load/require. (default: trace-mode on)
-#
-require "e2mmap.rb"
-
-$stdout.sync = TRUE
-
-module BC_APPLICATION__
- RCS_ID='-$Id: rbc.rb,v 1.8 1998/03/11 05:43:00 keiju Exp keiju $-'
-
- extend Exception2MessageMapper
- def_exception :UnrecognizedSwitch, "Unrecognized switch: %s"
-
- CONFIG = {}
- CONFIG[0] = $0
- CONFIG[:USE_READLINE] = TRUE
- CONFIG[:LOAD_MODULES] = []
- CONFIG[:INSPECT] = nil
- CONFIG[:TRACE_LOAD] = FALSE
- CONFIG[:RC] = TRUE
-
- CONFIG[:DEBUG] = FALSE
-
- while opt = ARGV.shift
- case opt
- when "-d"
- CONFIG[:DEBUG] = TRUE
- when "-m"
- CONFIG[:INSPECT] = FALSE if CONFIG[:INSPECT].nil?
- require "mathn.rb"
- include Math
- when "-r"
- opt = ARGV.shift
- CONFIG[:LOAD_MODULES].push opt if opt
- when "-f"
- opt = ARGV.shift
- CONFIG[:RC] = FALSE
- when "--inspect"
- CONFIG[:INSPECT] = TRUE
- when "--noinspect"
- CONFIG[:INSPECT] = FALSE
- when "--noreadline"
- CONFIG[:USE_READLINE] = FALSE
- when /^-/
- # print UnrecognizedSwitch.inspect, "\n"
- BC_APPLICATION__.fail UnrecognizedSwitch, opt
- else
- CONFIG[:USE_READLINE] = FALSE
- $0 = opt
- break
- end
- end
- CONFIG[:INSPECT] = TRUE if CONFIG[:INSPECT].nil?
-
- PROMPTi = "rbc%d> "
- PROMPTs = "rbc%d%s "
- PROMPTe = "rbc%d* "
-
- class BC
- def initialize
- lex_init
- end
-
- def eval_input(io, cont, bind)
- line = ''
- @io = io
- @ltype = nil
- @quoted = nil
- @indent = 0
- @lex_state = EXPR_BEG
-
- @io.prompt = format(PROMPTi, @indent)
-
- loop do
- @continue = FALSE
- l = @io.gets
-
- unless l
- break if line == ''
- else
- line = line + l
-
- lex(l) if l != "\n"
- print @quoted.inspect, "\n" if CONFIG[:DEBUG]
- if @ltype
- @io.prompt = format(PROMPTs, @indent, @ltype)
- next
- elsif @continue
- @io.prompt = format(PROMPTe, @indent)
- next
- elsif @indent > 0
- @io.prompt = format(PROMPTi, @indent)
- next
- end
- end
-
- if line != "\n"
- begin
- if CONFIG[:INSPECT]
- print((cont._=eval(line, bind)).inspect, "\n")
- else
- print((cont._=eval(line, bind)), "\n")
- end
- rescue StandardError, ScriptError
- # $! = 'exception raised' unless $!
- # print "ERR: ", $!, "\n"
- $! = RuntimeError.new("exception raised") unless $!
- print $!.type, ": ", $!, "\n"
- end
- end
- break if not l
- line = ''
- indent = 0
- @io.prompt = format(PROMPTi, indent)
- end
- print "\n"
- end
-
- EXPR_BEG = :EXPR_BEG
- EXPR_MID = :EXPR_MID
- EXPR_END = :EXPR_END
- EXPR_ARG = :EXPR_ARG
- EXPR_FNAME = :EXPR_FNAME
-
- CLAUSE_STATE_TRANS = {
- "alias" => EXPR_FNAME,
- "and" => EXPR_BEG,
- "begin" => EXPR_BEG,
- "case" => EXPR_BEG,
- "class" => EXPR_BEG,
- "def" => EXPR_FNAME,
- "defined?" => EXPR_END,
- "do" => EXPR_BEG,
- "else" => EXPR_BEG,
- "elsif" => EXPR_BEG,
- "end" => EXPR_END,
- "ensure" => EXPR_BEG,
- "for" => EXPR_BEG,
- "if" => EXPR_BEG,
- "in" => EXPR_BEG,
- "module" => EXPR_BEG,
- "nil" => EXPR_END,
- "not" => EXPR_BEG,
- "or" => EXPR_BEG,
- "rescue" => EXPR_MID,
- "return" => EXPR_MID,
- "self" => EXPR_END,
- "super" => EXPR_END,
- "then" => EXPR_BEG,
- "undef" => EXPR_FNAME,
- "unless" => EXPR_BEG,
- "until" => EXPR_BEG,
- "when" => EXPR_BEG,
- "while" => EXPR_BEG,
- "yield" => EXPR_END
- }
-
- ENINDENT_CLAUSE = [
- "case", "class", "def", "do", "for", "if",
- "module", "unless", "until", "while", "begin" #, "when"
- ]
- DEINDENT_CLAUSE = ["end" #, "when"
- ]
-
- PARCENT_LTYPE = {
- "q" => "\'",
- "Q" => "\"",
- "x" => "\`",
- "r" => "\/"
- }
-
- PARCENT_PAREN = {
- "{" => "}",
- "[" => "]",
- "<" => ">",
- "(" => ")"
- }
-
- def lex_init()
- @OP = Trie.new
- @OP.def_rules("\0", "\004", "\032"){}
- @OP.def_rules(" ", "\t", "\f", "\r", "\13") do
- @space_seen = TRUE
- next
- end
- @OP.def_rule("#") do
- |op, rests|
- @ltype = "#"
- identify_comment(rests)
- end
- @OP.def_rule("\n") do
- print "\\n\n" if CONFIG[:DEBUG]
- if @lex_state == EXPR_BEG || @lex_state == EXPR_FNAME
- @continue = TRUE
- else
- @lex_state = EXPR_BEG
- end
- end
- @OP.def_rules("*", "*=", "**=", "**") {@lex_state = EXPR_BEG}
- @OP.def_rules("!", "!=", "!~") {@lex_state = EXPR_BEG}
- @OP.def_rules("=", "==", "===", "=~", "<=>") {@lex_state = EXPR_BEG}
- @OP.def_rules("<", "<=", "<<") {@lex_state = EXPR_BEG}
- @OP.def_rules(">", ">=", ">>") {@lex_state = EXPR_BEG}
- @OP.def_rules("'", '"') do
- |op, rests|
- @ltype = op
- @quoted = op
- identify_string(rests)
- end
- @OP.def_rules("`") do
- |op, rests|
- if @lex_state != EXPR_FNAME
- @ltype = op
- @quoted = op
- identify_string(rests)
- end
- end
- @OP.def_rules('?') do
- |op, rests|
- @lex_state = EXPR_END
- identify_question(rests)
- end
- @OP.def_rules("&", "&&", "&=", "|", "||", "|=") do
- @lex_state = EXPR_BEG
- end
- @OP.def_rule("+@", proc{@lex_state == EXPR_FNAME}) {}
- @OP.def_rule("-@", proc{@lex_state == EXPR_FNAME}) {}
- @OP.def_rules("+=", "-=") {@lex_state = EXPR_BEG}
- @OP.def_rules("+", "-") do
- |op, rests|
- if @lex_state == EXPR_ARG
- if @space_seen and rests[0] =~ /[0-9]/
- identify_number(rests)
- else
- @lex_state = EXPR_BEG
- end
- elsif @lex_state != EXPR_END and rests[0] =~ /[0-9]/
- identify_number(rests)
- else
- @lex_state = EXPR_BEG
- end
- end
- @OP.def_rule(".") do
- |op, rests|
- @lex_state = EXPR_BEG
- if rests[0] =~ /[0-9]/
- rests.unshift op
- identify_number(rests)
- else
- # handle ``obj.if'' and such
- identify_identifier(rests, TRUE)
- @lex_state = EXPR_ARG
- end
- end
- @OP.def_rules("..", "...") {@lex_state = EXPR_BEG}
-
- lex_int2
- end
-
- def lex_int2
- @OP.def_rules("]", "}", ")") do
- @lex_state = EXPR_END
- @indent -= 1
- end
- @OP.def_rule(":") {|op,rests|
- identify_identifier(rests, TRUE)
- }
- @OP.def_rule("::") {|op,rests|
- identify_identifier(rests, TRUE);
- }
- @OP.def_rule("/") do
- |op, rests|
- if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
- @ltype = op
- @quoted = op
- identify_string(rests)
- elsif rests[0] == '='
- rests.shift
- @lex_state = EXPR_BEG
- elsif @lex_state == EXPR_ARG and @space_seen and rests[0] =~ /\s/
- @ltype = op
- @quoted = op
- identify_string(rests)
- else
- @lex_state = EXPR_BEG
- end
- end
- @OP.def_rules("^", "^=") {@lex_state = EXPR_BEG}
- @OP.def_rules(",", ";") {@lex_state = EXPR_BEG}
- @OP.def_rule("~") {@lex_state = EXPR_BEG}
- @OP.def_rule("~@", proc{@lex_state = EXPR_FNAME}) {}
- @OP.def_rule("(") do
- @lex_state = EXPR_BEG
- @indent += 1
- end
- @OP.def_rule("[]", proc{@lex_state == EXPR_FNAME}) {}
- @OP.def_rule("[]=", proc{@lex_state == EXPR_FNAME}) {}
- @OP.def_rule("[") do
- @indent += 1
- if @lex_state != EXPR_FNAME
- @lex_state = EXPR_BEG
- end
- end
- @OP.def_rule("{") do
- @lex_state = EXPR_BEG
- @indent += 1
- end
- @OP.def_rule('\\') {|op, rests| identify_escape(rests)} #')
- @OP.def_rule('%') do
- |op, rests|
- if @lex_state == EXPR_BEG || @lex_state == EXPR_MID
- identify_quotation(rests)
- elsif rests[0] == '='
- rests.shift
- elsif @lex_state == EXPR_ARG and @space_seen and rests[0] =~ /\s/
- identify_quotation(rests)
- else
- @lex_state = EXPR_BEG
- end
- end
- @OP.def_rule('$') do #'
- |op, rests|
- identify_gvar(rests)
- end
- @OP.def_rule('@') do
- |op, rests|
- if rests[0] =~ /[\w_]/
- rests.unshift op
- identify_identifier(rests)
- end
- end
- @OP.def_rule("def", proc{|op, chrs| /\s/ =~ chrs[0]}) do
- |op, rests|
- @indent += 1
- @lex_state = EXPR_END
- until rests[0] == "\n" or rests[0] == ";"
- rests.shift
- end
- end
- @OP.def_rule("") do
- |op, rests|
- printf "MATCH: start %s: %s\n", op, rests.inspect if CONFIG[:DEBUG]
- if rests[0] =~ /[0-9]/
- identify_number(rests)
- elsif rests[0] =~ /[\w_]/
- identify_identifier(rests)
- end
- printf "MATCH: end %s: %s\n", op, rests.inspect if CONFIG[:DEBUG]
- end
-
- p @OP if CONFIG[:DEBUG]
- end
-
- def lex(l)
- chrs = l.split(//)
- tokens = []
-
- case @ltype
- when "'", '"', '`', '/'
- identify_string(chrs)
- return if chrs.empty?
- when "#"
- identify_comment(chrs)
- return
- when "="
- if l =~ /^=end/
- $ltype = nil
- return
- end
- else
- if l =~ /^=begin/
- $ltype = "="
- return
- end
- end
-
- until chrs.empty?
- @space_seen = FALSE
- printf "perse: %s\n", chrs.join("") if CONFIG[:DEBUG]
- @OP.match(chrs)
- printf "lex_state: %s continue: %s\n", @lex_state.id2name, @continue if CONFIG[:DEBUG]
- end
- end
-
- def identify_gvar(chrs)
- @lex_state = EXPR_END
-
- ch = chrs.shift
- case ch
- when /[_~*$?!@\/\\;,.=:<>"]/ #"
- return
-
- when "-"
- ch = chrs.shift
- return
-
- when "&", "`", "'", "+"
- return
-
- when /[1-9]/
- chrs.unshift ch
- v = "$"
- while (ch = chrs.shift) =~ /[0-9]/
- end
- chrs.unshift ch
- return
-
- when /\w/
- chrs.unshift ch
- chrs.unshift "$"
- identify_identifier(chrs)
- return
-
- else
- chrs.unshift ch
- return
- end
- end
-
- def identify_identifier(chrs, escaped = FALSE)
- token = ""
- token.concat chrs.shift if chrs[0] =~ /[$@]/ or escaped
- while (ch = chrs.shift) =~ /\w|_/
- print ":", ch, ":" if CONFIG[:DEBUG]
- token.concat ch
- end
- chrs.unshift ch
-
- if ch == "!" or ch == "?"
- chrs.shift
- token.concat ch
- end
- # fix token
-
- if token =~ /^[$@]/ or escaped
- @lex_state = EXPR_END
- return
- end
-
- print token, "\n" if CONFIG[:DEBUG]
- if state = CLAUSE_STATE_TRANS[token]
- if @lex_state != EXPR_BEG and token =~ /^(if|unless|while|until)/
- # modifiers
- else
- if ENINDENT_CLAUSE.include?(token)
- @indent += 1
- elsif DEINDENT_CLAUSE.include?(token)
- @indent -= 1
- end
- end
- @lex_state = state
- return
- end
- if @lex_state == EXPR_FNAME
- @lex_state = EXPR_END
- if chrs[0] == '='
- chrs.shift
- end
- elsif @lex_state == EXPR_BEG
- @lex_state = EXPR_ARG
- else
- @lex_state = EXPR_END
- end
- end
-
- def identify_quotation(chrs)
- ch = chrs.shift
- if lt = PARCENT_LTYPE[ch]
- ch = chrs.shift
- else
- lt = "\""
- end
- if ch !~ /\W/
- chrs.unshift ch
- next
- end
- @ltype = lt
- unless @quoted = PARCENT_PAREN[ch]
- @quoted = ch
- end
- identify_string(chrs)
- end
-
- def identify_number(chrs)
- @lex_state = EXPR_END
-
- ch = chrs.shift
- case ch
- when /0/
- if (ch = chrs[0]) == "x"
- chrs.shift
- match = /[0-9a-f_]/
- else
- match = /[0-7_]/
- end
- while ch = chrs.shift
- if ch !~ match
- chrs.unshift ch
- break
- end
- end
- return
- end
-
- while ch = chrs.shift
- case ch
- when /[0-9]/
- when "e", "E"
- # type = FLOAT
- unless (ch = chrs.shift) == "+" or ch == "-"
- chrs.unshift ch
- end
- when "."
- # type = FLOAT
- when "_"
- else
- chrs.unshift ch
- return
- end
- end
- end
-
- def identify_question(chrs)
- @lex_state = EXPR_END
-
- if chrs.shift == "\\" #"
- identify_escape(chrs)
- end
- end
-
- def identify_string(chrs)
- while ch = chrs.shift
- if @quoted == ch
- if @ltype == "/"
- if chrs[0] =~ /i|o|n|e|s/
- chrs.shift
- end
- end
- @ltype = nil
- @quoted = nil
- @lex_state = EXPR_END
- break
- elsif ch == '\\' #'
- identify_escape(chrs)
- end
- end
- end
-
- def identify_comment(chrs)
- while ch = chrs.shift
- if ch == "\\" #"
- identify_escape(chrs)
- end
- if ch == "\n"
- @ltype = nil
- chrs.unshift ch
- break
- end
- end
- end
-
- def identify_escape(chrs)
- ch = chrs.shift
- case ch
- when "\n", "\r", "\f"
- @continue = TRUE
- when "\\", "n", "t", "r", "f", "v", "a", "e", "b" #"
- when /[0-7]/
- chrs.unshift ch
- 3.times do
- ch = chrs.shift
- case ch
- when /[0-7]/
- when nil
- break
- else
- chrs.unshift ch
- break
- end
- end
- when "x"
- 2.times do
- ch = chrs.shift
- case ch
- when /[0-9a-fA-F]/
- when nil
- break
- else
- chrs.unshift ch
- break
- end
- end
- when "M"
- if (ch = chrs.shift) != '-'
- chrs.unshift ch
- elsif (ch = chrs.shift) == "\\" #"
- identify_escape(chrs)
- end
- return
- when "C", "c", "^"
- if ch == "C" and (ch = chrs.shift) != "-"
- chrs.unshift ch
- elsif (ch = chrs.shift) == "\\" #"
- identify_escape(chrs)
- end
- return
- end
- end
- end
-
- class Trie
- extend Exception2MessageMapper
- def_exception :ErrNodeNothing, "node nothing"
- def_exception :ErrNodeAlreadyExists, "node already exists"
-
- class Node
- # abstract node if postproc is nil.
- def initialize(preproc = nil, postproc = nil)
- @Tree = {}
- @preproc = preproc
- @postproc = postproc
- end
-
- attr :preproc, TRUE
- attr :postproc, TRUE
-
- def search(chrs, opt = nil)
- return self if chrs.empty?
- ch = chrs.shift
- if node = @Tree[ch]
- node.search(chrs, opt)
- else
- if opt
- chrs.unshift ch
- self.create_subnode(chrs)
- else
- Trie.fail ErrNodeNothing
- end
- end
- end
-
- def create_subnode(chrs, preproc = nil, postproc = nil)
- if chrs.empty?
- if @postproc
- p node
- Trie.fail ErrNodeAlreadyExists
- else
- print "Warn: change abstruct node to real node\n" if CONFIG[:DEBUG]
- @preproc = preproc
- @postproc = postproc
- end
- return self
- end
-
- ch = chrs.shift
- if node = @Tree[ch]
- if chrs.empty?
- if node.postproc
- p node
- Trie.fail ErrNodeAlreadyExists
- else
- print "Warn: change abstruct node to real node\n" if CONFIG[:DEBUG]
- node.preproc = preproc
- node.postproc = postproc
- end
- else
- node.create_subnode(chrs, preproc, postproc)
- end
- else
- if chrs.empty?
- node = Node.new(preproc, postproc)
- else
- node = Node.new
- node.create_subnode(chrs, preproc, postproc)
- end
- @Tree[ch] = node
- end
- node
- end
-
- def match(chrs, op = "")
- print "match>: ", chrs, "op:", op, "\n" if CONFIG[:DEBUG]
- if chrs.empty?
- if @preproc.nil? || @preproc.call(op, chrs)
- printf "op1: %s\n", op if CONFIG[:DEBUG]
- @postproc.call(op, chrs)
- ""
- else
- nil
- end
- else
- ch = chrs.shift
- if node = @Tree[ch]
- if ret = node.match(chrs, op+ch)
- return ch+ret
- else
- chrs.unshift ch
- if @postproc and @preproc.nil? || @preproc.call(op, chrs)
- printf "op2: %s\n", op.inspect if CONFIG[:DEBUG]
- @postproc.call(op, chrs)
- return ""
- else
- return nil
- end
- end
- else
- chrs.unshift ch
- if @postproc and @preproc.nil? || @preproc.call(op, chrs)
- printf "op3: %s\n", op if CONFIG[:DEBUG]
- @postproc.call(op, chrs)
- return ""
- else
- return nil
- end
- end
- end
- end
- end
-
- def initialize
- @head = Node.new("")
- end
-
- def def_rule(token, preproc = nil, postproc = nil)
-# print node.inspect, "\n" if CONFIG[:DEBUG]
- postproc = proc if iterator?
- node = create(token, preproc, postproc)
- end
-
- def def_rules(*tokens)
- if iterator?
- p = proc
- end
- for token in tokens
- def_rule(token, nil, p)
- end
- end
-
- def preporc(token, proc)
- node = search(token)
- node.preproc=proc
- end
-
- def postproc(token)
- node = search(token, proc)
- node.postproc=proc
- end
-
- def search(token)
- @head.search(token.split(//))
- end
-
- def create(token, preproc = nil, postproc = nil)
- @head.create_subnode(token.split(//), preproc, postproc)
- end
-
- def match(token)
- token = token.split(//) if token.kind_of?(String)
- ret = @head.match(token)
- printf "match end: %s:%s", ret, token.inspect if CONFIG[:DEBUG]
- ret
- end
-
- def inspect
- format("<Trie: @head = %s>", @head.inspect)
- end
- end
-
- if /^-tt(.*)$/ =~ ARGV[0]
-# Tracer.on
- case $1
- when "1"
- tr = Trie.new
- print "0: ", tr.inspect, "\n"
- tr.def_rule("=") {print "=\n"}
- print "1: ", tr.inspect, "\n"
- tr.def_rule("==") {print "==\n"}
- print "2: ", tr.inspect, "\n"
-
- print "case 1:\n"
- print tr.match("="), "\n"
- print "case 2:\n"
- print tr.match("=="), "\n"
- print "case 3:\n"
- print tr.match("=>"), "\n"
-
- when "2"
- tr = Trie.new
- print "0: ", tr.inspect, "\n"
- tr.def_rule("=") {print "=\n"}
- print "1: ", tr.inspect, "\n"
- tr.def_rule("==", proc{FALSE}) {print "==\n"}
- print "2: ", tr.inspect, "\n"
-
- print "case 1:\n"
- print tr.match("="), "\n"
- print "case 2:\n"
- print tr.match("=="), "\n"
- print "case 3:\n"
- print tr.match("=>"), "\n"
- end
- exit
- end
-
- module CONTEXT
- def _=(value)
- CONFIG[:_] = value
- eval "_=BC_APPLICATION__::CONFIG[:_]", CONFIG[:BIND]
- end
-
-# def _
-# eval "_", CONFIG[:BIND]
-# end
-
- def quit
- exit
- end
-
- def trace_load(opt = nil)
- if !opt.nil?
- CONFIG[:TRACE_LOAD] = opt
- else
- CONFIG[:TRACE_LOAD] = !CONFIG[:TRACE_LOAD]
- end
- print "Switch to load/require #{unless CONFIG[:TRACE_LOAD]; ' non';end} trace mode.\n"
- if CONFIG[:TRACE_LOAD]
- eval %{
- class << self
- alias load rbc_load
- alias require rbc_require
- end
- }
- else
- eval %{
- class << self
- alias load rbc_load_org
- alias require rbc_require_org
- end
- }
- end
- CONFIG[:TRACE_LOAD]
- end
-
- alias rbc_load_org load
- def rbc_load(file_name)
- return true if load_sub(file_name)
- raise LoadError, "No such file to load -- #{file_name}"
- end
-
- alias rbc_require_org require
- def rbc_require(file_name)
- rex = Regexp.new("#{Regexp.quote(file_name)}(\.o|\.rb)?")
- return false if $".find{|f| f =~ rex}
-
- case file_name
- when /\.rb$/
- if load_sub(file_name)
- $".push file_name
- return true
- end
- when /\.(so|o|sl)$/
- rbc_require_org(file_name)
- end
-
- if load_sub(f = file_name + ".rb")
- $".push f
- return true
- end
- rbc_require_org(file_name)
- end
-
- def load_sub(fn)
- if fn =~ /^#{Regexp.quote(File::Separator)}/
- return false unless File.exist?(fn)
- BC.new.eval_input FileInputMethod.new(fn), self, CONFIG[:BIND]
- return true
- end
-
- for path in $:
- if File.exist?(f = File.join(path, fn))
- BC.new.eval_input FileInputMethod.new(f), self, CONFIG[:BIND]
- return true
- end
- end
- return false
- end
-
- def inspect_mode(opt = nil)
- if opt
- CONFIG[:INSPECT] = opt
- else
- CONFIG[:INSPECT] = !CONFIG[:INSPECT]
- end
- print "Switch to#{unless CONFIG[:INSPECT]; ' non';end} inspect mode.\n"
- CONFIG[:INSPECT]
- end
-
- def run(bind)
- CONFIG[:BIND] = bind
-
- if CONFIG[:RC]
- rc = File.expand_path("~/.irbrc")
- if File.exists?(rc)
- begin
- load rc
- rescue LoadError
- print "load error: #{rc}\n"
- print $!.type, ": ", $!, "\n"
- for err in $@[0, $@.size - 2]
- print "\t", err, "\n"
- end
- end
- end
- end
-
- if CONFIG[:TRACE_LOAD]
- trace_load true
- end
-
- for m in CONFIG[:LOAD_MODULES]
- begin
- require m
- rescue LoadError
- print $@[0], ":", $!.type, ": ", $!, "\n"
- end
- end
-
- if !$0.equal?(CONFIG[0])
- io = FileInputMethod.new($0)
- elsif defined? Readline
- io = ReadlineInputMethod.new
- else
- io = StdioInputMethod.new
- end
-
- BC.new.eval_input io, self, CONFIG[:BIND]
- end
- end
-
- class InputMethod
- attr :prompt, TRUE
-
- def gets
- end
- public :gets
- end
-
- class StdioInputMethod < InputMethod
- def gets
- print @prompt
- $stdin.gets
- end
- end
-
- class FileInputMethod < InputMethod
- def initialize(file)
- @io = open(file)
- end
-
- def gets
- l = @io.gets
- print @prompt, l
- l
- end
- end
-
- if CONFIG[:USE_READLINE]
- begin
- require "readline"
- print "use readline module\n"
- class ReadlineInputMethod < InputMethod
- include Readline
- def gets
- if l = readline(@prompt, TRUE)
- l + "\n"
- else
- l
- end
- end
- end
- rescue LoadError
- CONFIG[:USE_READLINE] = FALSE
- end
- end
-end
-
-extend BC_APPLICATION__::CONTEXT
-run(binding)
-