自动生成升级包(subversion,ruby)

笔者想制作一个工具，可以很快速的从subversion控制下的目录中，找出所有有更改的文件，并且形成升级包，以便于到服务器上的升级工作。
（我们需要将升级包copy到服务器之后，直接将升级包的内容覆盖，就可以完成升级 ）
以前这个升级包总是手动创建，很麻烦，尤其是如果文件比较分散的时候，更是如此。

大致思路：
1. 可以使用svn status railsapp_root 可以得到一个列表
A  +   test/unit/supplier_category_test.rb
A  +   test/functional/supplier_categories_controller_test.rb
...
A  +   public/inventory/images/system_pic/add.jpg
A  +   public/inventory/images/system_pic/sub.jpg
A  +   public/inventory/stylesheets/my.css

这个列表中就包含了所有新建或者修改的目录和文件，只需要按照这个清单“抓药“就好了

2. 根据这个文件中提示的信息，进行逐行分解，得到相应的路径
A  +   public/inventory/images/system_pic/add.jpg
=>
public/inventory/images/system_pic/add.jpg
然后，判断这个信息指定的父路径（public/inventory/images/system_pic/）是否存在。
不存在，就依次创建。
再判断这个 是否是目录，如果是，则在目标路径下增加相应的目录（不要复制），
如果不是目录（是文件），那么就复制。

注意目录一概不要复制，复制之后，会带.svn一起复制的。

3. ruby 调用外部命令可以使用system
例如 system('pwd')
笔者还不知道如何将执行之后的结果捕捉，所以就只能使用临时文件的方法了。:）
如果有哪位朋友知道，还望告知一二。

代码：autocreate_upgradepackage.rb

# step
# 1.get svn status
# 2.explain each line to get file or directory with path
# 3.Does check it's parent exist? if not, create it's parent
# 4.if it is a directory , create it 
# 5.if it is a file , copy it .

bhelp = false
begin
  if ["--help","-?",nil,""].member?(ARGV[0])
    bhelp = true
  else
    railsroot = ARGV[0] #'/tmp/subversion/inventory/tags/20080107' # without /
    descroot = ARGV[1] # '/root/Desktop/kk2' # without /
    tempfile = ARGV[2] || '/tmp/tempfile.txt'
  end
rescue
  bhelp = true
end
if bhelp
  puts " \
  ruby autocreate_upgradepackage.rb svn_dir desc_dir \n \
  Attention : \n\
  		1.svn_dir must be a directory. \n \
  		2.the tail of svn_dir and desc_dir need not be with / . \n \
  \n \
  e.g. \n \
  ruby autocreate_upgradepackage.rb /tmp/subversion/inventory/tags/20080107 /root/Desktop/mypackage \n\
  "
  exit 
end

prefix_length = 7 #A  +   test/functional/supplier_categories_controller_test.rb

# 1.
system("svn status #{railsroot} > #{tempfile}")

# 2.
descroot_withsplit = descroot + "/" 
railsroot_withsplit = railsroot + "/"
arrList = []
irailsroot = railsroot=="."? 0 : railsroot.length+1 
ipre = prefix_length + irailsroot
File.open(tempfile).each do |file|
  file.each_line { |line|
    filename = line[ipre,line.length-ipre-1] # -1 : remove the tall ( \n )
    arrList << filename
    }
end


# 3.
system("mkdir #{descroot} -p")
descroot_withsplit = descroot + "/" 
railsroot_withsplit = railsroot + "/"
arrList.each do |line|
  if not File.exist?(descroot_withsplit+line)
    if File.directory?(railsroot_withsplit+line)
      system("mkdir #{descroot_withsplit+line} -p") # 4.if it is a directory , create it 
    else
      dirpath = File.dirname(descroot_withsplit+line)
      if not File.exist?(dirpath)
        system("mkdir #{dirpath} -p") # 3.Does check it's parent exist? if not, create it's paren
      end
      system("cp #{railsroot_withsplit+line} #{descroot_withsplit+line}") # 5.if it is a file , copy it .
    end
  end
end

puts "finished"

windows版本:

# step
# 1.get svn status
# 2.explain each line to get file or directory with path
# 3.Does check it's parent exist? if not, create it's parent
# 4.if it is a directory , create it 
# 5.if it is a file , copy it .

bhelp = false
begin
  if ["--help","-?",nil,""].member?(ARGV[0])
    bhelp = true
  else
    railsroot = ARGV[0] #'/tmp/subversion/inventory/tags/20080107' # without /
    descroot = ARGV[1] # '/root/Desktop/kk2' # without /
    tempfile = ARGV[2] || 'c:\temp\tempfile.txt' # '/tmp/tempfile.txt'
  end
rescue
  bhelp = true
end
if bhelp
  puts " \
  ruby autocreate_upgradepackage.rb svn_dir desc_dir \n \
  Attention : \n\
  		1.svn_dir must be a directory. \n \
  		2.the tail of svn_dir and desc_dir need not be with / . \n \
  \n \
  e.g. \n \
  ruby autocreate_upgradepackage.rb /tmp/subversion/inventory/tags/20080107 /root/Desktop/mypackage \n\
  "
  exit 
end

prefix_length = 7 #A  +   test/functional/supplier_categories_controller_test.rb

# 1.
system("svn status #{railsroot} > #{tempfile}")

# 2.
descroot_withsplit = descroot + "\\" 
railsroot_withsplit = railsroot + "\\"
arrList = []
irailsroot = railsroot=="."? 0 : railsroot.length+1 
ipre = prefix_length + irailsroot
File.open(tempfile).each do |file|
  file.each_line { |line|
    filename = line[ipre,line.length-ipre-1] # -1 : remove the tall ( \n )
    arrList << filename
  }
end


# 3.
system("md #{descroot} ")
descroot_withsplit = descroot + "\\" 
railsroot_withsplit = railsroot + "\\"
arrList.each do |line|
  if not File.exist?(descroot_withsplit+line)
    if File.directory?(railsroot_withsplit+line)
      system("md #{descroot_withsplit+line} ") # 4.if it is a directory , create it 
    else
      dirpath = File.dirname(descroot_withsplit+line)
      if not File.exist?(dirpath)
        system("md #{dirpath} ") # 3.Does check it's parent exist? if not, create it's paren
      end
      system("copy #{railsroot_withsplit+line} #{descroot_withsplit+line}") # 5.if it is a file , copy it .
    end
  end
end

puts "finished"