[ditz-talk] [PATCH] support searching up directory structure for root

[Eric Merritt]

This patch adds support for search up the directory structure for the bugs directory. In actually it looks up the directory structure for a <bugs-dir>/projects.yaml structure. When it finds that it uses that as the project root. This change has been enacted in every command except init.
---
 bin/ditz    |   22 +++++++++++++---------
 lib/ditz.rb |   18 ++++++++++++++++++
 2 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/bin/ditz b/bin/ditz
index ee52b15..7859e45 100755
--- a/bin/ditz
+++ b/bin/ditz
@@ -24,8 +24,9 @@ case cmd # some special cases not handled by Ditz::Operator
 when "init"
   die "#{dir} directory already exists" if File.exists? dir
   FileUtils.mkdir dir
+  fn = File.join dir, PROJECT_FN
   project = op.init
-  project.save! dir
+  project.save! fn
   puts "Ok, #{dir} directory created successfully."
   exit
 when "help"
@@ -33,14 +34,17 @@ when "help"
   exit
 end
 
-die "No #{dir} directory---use 'ditz init' to initialize" unless File.exists? dir
+project_root = Ditz::find_project_root dir, Dir.pwd
+
+die "No #{dir} directory---use 'ditz init' to initialize" unless project_root != nil and File.exists? project_root
+
 
 project = begin
-  fn = File.join dir, PROJECT_FN
+  fn = File.join project_root, PROJECT_FN
   Ditz::debug "loading project from #{fn}"
   project = Ditz::Project.from fn
 
-  fn = File.join dir, "issue-*.yaml"
+  fn = File.join project_root, "issue-*.yaml"
   Ditz::debug "loading issues from #{fn}"
   project.issues = Dir[fn].map { |fn| Ditz::Issue.from fn }
   Ditz::debug "found #{project.issues.size} issues"
@@ -87,7 +91,7 @@ end
 ## save project.yaml
 dirty = project.each_modelobject { |o| break true if o.changed? } || false
 if dirty
-  fn = File.join dir, PROJECT_FN
+  fn = File.join project_root, PROJECT_FN
   Ditz::debug "project is dirty, saving #{fn}"
   project.each_modelobject { |o| o.before_serialize project }
   project.save! fn
@@ -98,26 +102,26 @@ end
 project.issues.each do |i|
   if i.changed?
     i.before_serialize project
-    fn = File.join dir, ISSUE_TO_FN(i)
+    fn = File.join project_root, ISSUE_TO_FN(i)
     Ditz::debug "issue #{i.name} is dirty, saving #{fn}"
     i.save! fn
   end
 end
 
 project.deleted_issues.each do |i|
-  fn = File.join dir, ISSUE_TO_FN(i)
+  fn = File.join project_root, ISSUE_TO_FN(i)
   Ditz::debug "issue #{i.name} has been deleted, deleting #{fn}"
   FileUtils.rm fn
 end
 
 unless project.added_issues.empty?
   puts "You may have to inform your SCM that the following files have been added:"
-  project.added_issues.each { |i| puts "  " + File.join(dir, ISSUE_TO_FN(i)) }
+  project.added_issues.each { |i| puts "  " + File.join(project_root, ISSUE_TO_FN(i)) }
 end
 
 unless project.deleted_issues.empty?
   puts "You may have to inform your SCM that the following files have been deleted:"
-  project.deleted_issues.each { |i| puts "  " + File.join(dir, ISSUE_TO_FN(i)) }
+  project.deleted_issues.each { |i| puts "  " + File.join(project_root, ISSUE_TO_FN(i)) }
 end
 
 config.save! $opts[:config_file] if config.changed?
diff --git a/lib/ditz.rb b/lib/ditz.rb
index 7cab4a6..f3a6a30 100644
--- a/lib/ditz.rb
+++ b/lib/ditz.rb
@@ -1,3 +1,4 @@
+require 'pathname'
 module Ditz
 
 VERSION = "0.1.2"
@@ -7,6 +8,23 @@ def debug s
 end
 module_function :debug
 
+
+def find_project_root(dir, pwd)
+  p = Pathname.new pwd
+  np = p.join dir, "project.yaml"
+  if np.exist?
+    return np.dirname
+  else
+    if p.dirname != p
+      find_project_root dir, p.dirname
+    else
+      return nil
+    end
+  end
+end
+
+module_function :find_project_root
+
 end
 
 require 'model-objects'
-- 
1.5.4.4