stable 2012.05.30 11:26

1 files changed, 472 insertions, 0 deletions

diff --git a/scripts/context/ruby/fcd_start.rb b/scripts/context/ruby/fcd_start.rb
new file mode 100644
index 000000000..b1fa42a2a
--- /dev/null
+++ b/scripts/context/ruby/fcd_start.rb
@@ -0,0 +1,472 @@
+# Hans Hagen / PRAGMA ADE / 2005 / www.pragma-ade.com
+#
+# Fast Change Dir
+#
+# This is a kind of variant of the good old ncd
+# program. This script uses the same indirect cmd
+# trick as Erwin Waterlander's wcd program.
+#
+# === windows: fcd.cmd ===
+#
+# @echo off
+# ruby -S fcd_start.rb %1 %2 %3 %4 %5 %6 %7 %8 %9
+# if exist "%HOME%/fcd_stage.cmd" call %HOME%/fcd_stage.cmd
+#
+# === linux: fcd (fcd.sh) ===
+#
+# !/usr/bin/env sh
+# ruby -S fcd_start.rb $1 $2 $3 $4 $5 $6 $7 $8 $9
+# if test -f "$HOME/fcd_stage.sh" ; then
+#   . $HOME/fcd_stage.sh ;
+# fi;
+#
+# ===
+#
+# On linux, one should source the file: ". fcd args" in order
+# to make the chdir persistent.
+#
+# You can create a stub with:
+#
+# ruby fcd_start.rb --stub --verbose
+#
+# usage:
+#
+# fcd --make t:\
+# fcd --add f:\project
+# fcd [--find] whatever
+# fcd [--find] whatever c (c being a list entry)
+# fcd [--find] whatever . (last choice with this pattern)
+# fcd --list
+
+# todo: HOMEDRIVE\HOMEPATH
+
+require 'rbconfig'
+
+class FastCD
+
+    @@rootpath = nil
+
+    ['HOME','TEMP','TMP','TMPDIR'].each do |key|
+        if ENV[key] then
+            if FileTest.directory?(ENV[key]) then
+                @@rootpath = ENV[key]
+                break
+            end
+        end
+    end
+
+    exit unless @@rootpath
+
+    @@mswindows = Config::CONFIG['host_os'] =~ /mswin/
+    @@maxlength = 26
+
+    require 'Win32API' if @@mswindows
+
+    if @@mswindows then
+        @@stubcode = [
+            '@echo off',
+            '',
+            'if not exist "%HOME%" goto temp',
+            '',
+            ':home',
+            '',
+            'ruby -S fcd_start.rb %1 %2 %3 %4 %5 %6 %7 %8 %9',
+            '',
+            'if exist "%HOME%\fcd_stage.cmd" call %HOME%\fcd_stage.cmd',
+            'goto end',
+            '',
+            ':temp',
+            '',
+            'ruby -S fcd_start.rb %1 %2 %3 %4 %5 %6 %7 %8 %9',
+            '',
+            'if exist "%TEMP%\fcd_stage.cmd" call %TEMP%\fcd_stage.cmd',
+            'goto end',
+            '',
+            ':end'
+        ].join("\n")
+    else
+        @@stubcode = [
+            '#!/usr/bin/env sh',
+            '',
+            'ruby -S fcd_start.rb $1 $2 $3 $4 $5 $6 $7 $8 $9',
+            '',
+            'if test -f "$HOME/fcd_stage.sh" ; then',
+            '  . $HOME/fcd_stage.sh ;',
+            'fi;'
+        ].join("\n")
+    end
+
+    @@selfpath = File.dirname($0)
+    @@datafile = File.join(@@rootpath,'fcd_state.dat')
+    @@histfile = File.join(@@rootpath,'fcd_state.his')
+    @@cdirfile = File.join(@@rootpath,if @@mswindows then 'fcd_stage.cmd' else 'fcd_stage.sh' end)
+    @@stubfile = File.join(@@selfpath,if @@mswindows then 'fcd.cmd'       else 'fcd'          end)
+
+    def initialize(verbose=false)
+        @list = Array.new
+        @hist = Hash.new
+        @result = Array.new
+        @pattern = ''
+        @result = ''
+        @verbose = verbose
+        if f = File.open(@@cdirfile,'w') then
+            f << "#{if @@mswindows then 'rem' else '#' end} no dir to change to"
+            f.close
+        else
+            report("unable to create stub #{@@cdirfile}")
+        end
+    end
+
+    def filename(name)
+        File.join(@@root,name)
+    end
+
+    def report(str,verbose=@verbose)
+        puts(">> #{str}") if verbose
+    end
+
+    def flush(str,verbose=@verbose)
+        print(str) if verbose
+    end
+
+    def clear
+        if FileTest.file?(@@histfile)
+            begin
+                File.delete(@@histfile)
+            rescue
+                report("error in deleting history file '#{@histfile}'")
+            else
+                report("history file '#{@histfile}' is deleted")
+            end
+        else
+            report("no history file '#{@histfile}'")
+        end
+    end
+
+    def scan(dir='.')
+        begin
+            [dir].flatten.sort.uniq.each do |dir|
+                begin
+                    Dir.chdir(dir)
+                    report("scanning '#{dir}'")
+                    # flush(">> ")
+                    Dir.glob("**/*").each do |d|
+                        if FileTest.directory?(d) then
+                            @list << File.expand_path(d)
+                            # flush(".")
+                        end
+                    end
+                    # flush("\n")
+                    @list = @list.sort.uniq
+                    report("#{@list.size} entries found")
+                rescue
+                    report("unknown directory '#{dir}'")
+                end
+            end
+        rescue
+            report("invalid dir specification   ")
+        end
+    end
+
+    def save
+        begin
+            if f = File.open(@@datafile,'w') then
+                @list.each do |l|
+                    f.puts(l)
+                end
+                f.close
+                report("#{@list.size} status bytes saved in #{@@datafile}")
+            else
+                report("unable to save status in #{@@datafile}")
+            end
+        rescue
+            report("error in saving status in #{@@datafile}")
+        end
+    end
+
+    def remember
+        if @hist[@pattern] == @result then
+            # no need to save result
+        else
+            begin
+                if f = File.open(@@histfile,'w') then
+                    @hist[@pattern] = @result
+                    @hist.keys.each do |k|
+                        f.puts("#{k} #{@hist[k]}")
+                    end
+                    f.close
+                    report("#{@hist.size} history entries saved in #{@@histfile}")
+                else
+                    report("unable to save history in #{@@histfile}")
+                end
+            rescue
+                report("error in saving history in #{@@histfile}")
+            end
+        end
+    end
+
+    def load
+        begin
+            @list = IO.read(@@datafile).split("\n")
+            report("#{@list.length} status bytes loaded from #{@@datafile}")
+        rescue
+            report("error in loading status from #{@@datafile}")
+        end
+        begin
+            IO.readlines(@@histfile).each do |line|
+                if line =~ /^(.*?)\s+(.*)$/i then
+                    @hist[$1] = $2
+                end
+            end
+            report("#{@hist.length} history entries loaded from #{@@histfile}")
+        rescue
+            report("error in loading history from #{@@histfile}")
+        end
+    end
+
+    def show
+        begin
+            puts("directories:")
+            puts("\n")
+            if @list.length > 0 then
+                @list.each do |l|
+                    puts(l)
+                end
+            else
+                puts("no entries")
+            end
+            puts("\n")
+            puts("history:")
+            puts("\n")
+            if @hist.length > 0 then
+                @hist.keys.sort.each do |h|
+                    puts("#{h} >> #{@hist[h]}")
+                end
+            else
+                puts("no entries")
+            end
+        rescue
+        end
+    end
+
+    def find(pattern=nil)
+        begin
+            if pattern = [pattern].flatten.first then
+                if  pattern.length > 0 and @pattern = pattern then
+                    @result = @list.grep(/\/#{@pattern}$/i)
+                    if @result.length == 0 then
+                        @result = @list.grep(/\/#{@pattern}[^\/]*$/i)
+                    end
+                end
+            else
+                puts(Dir.pwd.gsub(/\\/o, '/'))
+            end
+        rescue
+            puts("some error")
+        end
+    end
+
+    def chdir(dir)
+        begin
+            if dir then
+                if f = File.open(@@cdirfile,'w') then
+                    if @@mswindows then
+                        f.puts("cd /d #{dir.gsub('/','\\')}")
+                    else
+                        f.puts("cd #{dir.gsub("\\",'/')}")
+                    end
+                    f.close
+                end
+                @result = dir
+                report("changing to #{dir}",true)
+            else
+                report("not changing dir")
+            end
+        rescue
+        end
+    end
+
+    def choose(args=[])
+        offset = 97
+        unless @pattern.empty? then
+            begin
+                case @result.size
+                    when 0 then
+                        report("dir '#{@pattern}' not found",true)
+                    when 1 then
+                        chdir(@result[0])
+                    else
+                        list = @result.dup
+                        begin
+                            if answer = args[1] then # assignment & test
+                                if answer == '.' and @hist.key?(@pattern) then
+                                    if FileTest.directory?(@hist[@pattern]) then
+                                        print("last choice ")
+                                        chdir(@hist[@pattern])
+                                        return
+                                    end
+                                else
+                                    index = answer[0] - offset
+                                    if dir = list[index] then
+                                        chdir(dir)
+                                        return
+                                    end
+                                end
+                            end
+                        rescue
+                            puts("some error")
+                        end
+                        loop do
+                            print("\n")
+                            list.each_index do |i|
+begin
+                                if i < @@maxlength then
+                                    # puts("#{(i+?a).chr}  #{list[i]}")
+                                    puts("#{(i+offset).chr}  #{list[i]}")
+                                else
+                                    puts("\n   there are #{list.length-@@maxlength} entries more")
+                                    break
+                                end
+rescue
+                            puts("some error")
+end
+                            end
+                            print("\n>> ")
+                            if answer = wait then
+                                if answer >= offset and answer <= offset+25 then
+                                    index = answer - offset
+                                    if dir = list[index] then
+                                        print("#{answer.chr} ")
+                                        chdir(dir)
+                                    elsif @hist.key?(@pattern) and FileTest.directory?(@hist[@pattern]) then
+                                        print("last choice ")
+                                        chdir(@hist[@pattern])
+                                    else
+                                        print("quit\n")
+                                    end
+                                    break
+                                elsif list.length >= @@maxlength then
+                                    @@maxlength.times do |i| list.shift end
+                                    print("next set")
+                                    print("\n")
+                                elsif @hist.key?(@pattern) and FileTest.directory?(@hist[@pattern]) then
+                                    print("last choice ")
+                                    chdir(@hist[@pattern])
+                                    break
+                                else
+                                    print("quit\n")
+                                    break
+                                end
+                            end
+                        end
+                    end
+            rescue
+                 report($!)
+            end
+        end
+    end
+
+    def wait
+        begin
+            $stdout.flush
+            return getc
+        rescue
+            return nil
+        end
+    end
+
+    def getc
+        begin
+            if @@mswindows then
+                ch = Win32API.new('crtdll','_getch',[],'L').call
+            else
+                system('stty raw -echo')
+                ch = $stdin.getc
+                system('stty -raw echo')
+            end
+        rescue
+            ch = nil
+        end
+        return ch
+    end
+
+    def check
+        unless FileTest.file?(@@stubfile) then
+            report("creating stub #{@@stubfile}")
+            begin
+                if f = File.open(@@stubfile,'w') then
+                    f.puts(@@stubcode)
+                    f.close
+                end
+            rescue
+                report("unable to create stub #{@@stubfile}")
+            else
+                unless @mswindows then
+                    begin
+                        File.chmod(0755,@@stubfile)
+                    rescue
+                        report("unable to change protections on #{@@stubfile}")
+                    end
+                end
+            end
+        else
+            report("stub #{@@stubfile} already present")
+        end
+    end
+
+end
+
+$stdout.sync = true
+
+verbose, action, args = false, :find, Array.new
+
+usage   = "fcd [--add|clear|find|list|make|show|stub] [--verbose] [pattern]"
+version = "1.0.2"
+
+def quit(message)
+    puts(message)
+    exit
+end
+
+ARGV.each do |a|
+    case a
+        when '-a', '--add'     then action = :add
+        when '-c', '--clear'   then action = :clear
+        when '-f', '--find'    then action = :find
+        when '-l', '--list'    then action = :show
+        when '-m', '--make'    then action = :make
+        when '-s', '--show'    then action = :show
+        when       '--stub'    then action = :stub
+        when '-v', '--verbose' then verbose = true
+        when       '--version' then quit("version: #{version}")
+        when '-h', '--help'    then quit("usage: #{usage}")
+        when /^\-\-.*/         then quit("error: unknown switch #{a}, try --help")
+                               else args << a
+    end
+end
+
+fcd = FastCD.new(verbose)
+fcd.report("Fast Change Dir / version #{version}")
+
+case action
+    when :make then
+        fcd.clear
+        fcd.scan(args)
+        fcd.save
+    when :clear then
+        fcd.clear
+    when :add then
+        fcd.load
+        fcd.scan(args)
+        fcd.save
+    when :show then
+        fcd.load
+        fcd.show
+    when :find then
+        fcd.load
+        fcd.find(args)
+        fcd.choose(args)
+        fcd.remember
+    when :stub
+        fcd.check
+end