* directory independent launch_here.rb: 3rd attempt

1 files changed, 48 insertions, 4 deletions

diff --git a/launch_here.rb b/launch_here.rb
index 95d383ba..b368f4c6 100755
--- a/launch_here.rb
+++ b/launch_here.rb
@@ -4,14 +4,58 @@
 #
 
 SCM_DIR = File.expand_path File.dirname(__FILE__)
-$0 = File.expand_path $0
-
-Dir.chdir SCM_DIR
-
 puts "Running from #{SCM_DIR}"
 
 $:.unshift File.join(SCM_DIR, 'lib')
 
+$version = '0.9.11-git'
+
+pwd = Dir.pwd
+begin
+  Dir.chdir SCM_DIR
+
+  if File.exists? '.git'
+    begin
+      git_out = `git status`
+      git_out.match(/^# On branch (.*)\n/)
+      if $1 # git 1.5.x
+        branch = $1.dup || "unknown"
+        changed = git_out.match(/^# Change(.*)\n/)
+        rev = "revision "
+        git_out = `git log -1 --pretty=format:"%h%n%b%n%ct"`.split("\n")
+        rev << git_out.first
+        $version_timestamp = git_out.last.to_i
+        rev << "(svn #{$1})" if git_out[1].match(/^git-svn-id: \S+@(\d+)/)
+        rev << ", local changes" if changed
+      else # older gits
+        git_out = `git branch`
+        git_out.match(/^\* (.*)\n/)
+        branch = $1.dup rescue "unknown"
+        rev = "revision " + `git rev-parse HEAD`[0,6]
+      end
+    rescue => e
+      puts e.inspect
+      branch = "unknown branch"
+      rev = "unknown revision"
+    end
+    $version << " (#{branch} branch, #{rev})"
+  elsif File.directory? File.join(up, '.svn')
+    rev = " (unknown revision)"
+    begin
+      svn_out = `svn info`
+      rev = " (revision #{$1}" if svn_out =~ /Last Changed Rev: (\d+)/
+      svn_st = `svn st #{up}`
+      rev << ", local changes" if svn_st =~ /^[MDA] /
+      rev << ")"
+    rescue => e
+      puts e.inspect
+    end
+    $version += rev
+  end
+ensure
+  Dir.chdir pwd
+end
+
 module Irc
 class Bot
   module Config