Remove support for --password; implement password support with env var

nirvdrum#305

ChangeLog.markdown

@@ -1,3 +1,9 @@
+# 2.4.1 - 2021-12-17
+
+  Since 'git-svn' does not support '--password' anymore, this release modifies the mechanism to supply a password when needed.
+
+  * Removed support for '--password' option (jesteves; PR merge pending).
+  * Added support for detecting and using the value of the environment variable 'SVN2GIT_PASSWORD' when `svn git` is invoked (jesteves; PR merge pending).
 # 2.4.0 - 2016-10-30
 
   This release introduces the ability to supply a password for SVN repositories that can't authenticate by other means.

README.markdown

@@ -120,7 +120,8 @@ one of them.
 
 If this doesn't cooperate and you need to specify a password on the command-line:
 
-        $ svn2git http://svn.example.com/path/to/repo --username <<user_with_perms>> --password <<password>>
+        $ # define environment variable SVN2GIT_PASSWORD=<<password>> according to shell syntax
+        $ svn2git http://svn.example.com/path/to/repo --username <<user_with_perms>>
 
 8. You need to migrate starting at a specific svn revision number.
 
@@ -206,7 +207,6 @@ Options Reference
     Specific options:
             --rebase                     Instead of cloning a new project, rebase an existing one against SVN
             --username NAME              Username for transports that needs it (http(s), svn)
-            --password PASS              Password for transports that needs it (http(s), svn)
             --trunk TRUNK_PATH           Subpath to trunk from repository URL (default: trunk)
             --branches BRANCHES_PATH     Subpath to branches from repository URL (default: branches); can be used multiple times
             --tags TAGS_PATH             Subpath to tags from repository URL (default: tags); can be used multiple times

VERSION.yml

@@ -1,5 +1,5 @@
 ---
 :major: 2
 :minor: 4
-:patch: 0
+:patch: 1
 :build: 

lib/svn2git/migration.rb

@@ -52,7 +52,6 @@ def parse(args)
       options[:exclude] = []
       options[:revision] = nil
       options[:username] = nil
-      options[:password] = nil
       options[:rebasebranch] = false
 
       if File.exists?(File.expand_path(DEFAULT_AUTHORS_FILE))
@@ -75,10 +74,6 @@ def parse(args)
           options[:username] = username
         end
 
-        opts.on('--password PASSWORD', 'Password for transports that need it (http(s), svn)') do |password|
-          options[:password] = password
-        end
-
         opts.on('--trunk TRUNK_PATH', 'Subpath to trunk from repository URL (default: trunk)') do |trunk|
           options[:trunk] = trunk
         end
@@ -177,13 +172,11 @@ def clone!
       exclude = @options[:exclude]
       revision = @options[:revision]
       username = @options[:username]
-      password = @options[:password]
 
       if rootistrunk
         # Non-standard repository layout.  The repository root is effectively 'trunk.'
         cmd = "git svn init --prefix=svn/ "
         cmd += "--username='#{username}' " unless username.nil?
-        cmd += "--password='#{password}' " unless password.nil?
         cmd += "--no-metadata " unless metadata
         if nominimizeurl
           cmd += "--no-minimize-url "
@@ -196,7 +189,6 @@ def clone!
 
         # Add each component to the command that was passed as an argument.
         cmd += "--username='#{username}' " unless username.nil?
-        cmd += "--password='#{password}' " unless password.nil?
         cmd += "--no-metadata " unless metadata
         if nominimizeurl
           cmd += "--no-minimize-url "
@@ -393,6 +385,15 @@ def optimize_repos
     end
 
     def run_command(cmd, exit_on_error=true, printout_output=false)
+      if ( ( cmd =~ /^git[ ]svn/ ) and ( ENV.key?('SVN2GIT_PASSWORD') ) )
+        password = ENV['SVN2GIT_PASSWORD']
+        cmd = "echo #{password} | " + cmd
+      end
+
+      _run_command( cmd, exit_on_error, printout_output )
+    end
+
+    def _run_command(cmd, exit_on_error=true, printout_output=false)
       log "Running command: #{cmd}\n"
 
       ret = ''