COMMAND: Add readme set subcommand

Add to the readme command the ability to alter the README of a repository.

1 files changed, 41 insertions, 14 deletions

diff --git a/lib/gitano/command.lua b/lib/gitano/command.lua
index c3fd108..80fa554 100644
--- a/lib/gitano/command.lua
+++ b/lib/gitano/command.lua
@@ -9,6 +9,7 @@ local util = require 'gitano.util'
 local repository = require 'gitano.repository'
 
 local sp = require "luxio.subprocess"
+local sio = require "luxio.simple"
 
 local cmds = {}
 
@@ -600,16 +601,22 @@ assert(register_cmd("config", builtin_config_short,
 		    builtin_config_validate, builtin_config_prep,
 		    builtin_config_run, true, false))
 
-local builtin_readme_short = "View readme for a repository (if present)"
+local builtin_readme_short = "Access readme for a repository"
 local builtin_readme_helptext = [[
-usage: readme <reponame>
+usage: readme <reponame> [set|show]
 
-Shows you the readme for the given repository.  You must have read
-access to the repository in order to see it.
+If you do not provide a sub-command, the readme command defaults to
+showing you the readme for the given repository.  To view the
+readme you must have read access to the repository.
+
+If you provide the subcommand 'set' then the readme command reads
+from the input stream and updates the readme in the repository.
+You must have the right to alter the project readme in order to do
+this.
 ]]
 
 local function builtin_readme_validate(config, repo, cmdline)
-   if #cmdline ~= 2 then
+   if #cmdline < 2 then
       log.error("Expected repository not provided")
       return false
    end
@@ -617,25 +624,45 @@ local function builtin_readme_validate(config, repo, cmdline)
       log.error("Repository does not exist")
       return false
    end
+   if #cmdline > 3 then
+      log.error("usage: readme <reponame> [set|show]")
+      return false
+   end
+   if #cmdline == 2 then
+      cmdline[3] = "show"
+   end
+   if cmdline[3] ~= "set" and cmdline[3] ~= "show" then
+      log.error("usage: readme <reponame> [set|show]")
+      return false
+   end
    return true
 end
 
 local function builtin_readme_prep(config, repo, cmdline, context)
-   context.operation = "read"
+   if cmdline[3] == "show" then
+      context.operation = "read"
+   else
+      context.operation = "setreadme"
+   end
    return repo:run_lace(context)
 end
 
 local function builtin_readme_run(config, repo, cmdline, env)
-   local t = repo.readme_mdwn
-   if t then
-      if not t:match("\n$") then
-	 t = t .. "\n"
-      end
-      for l in t:gmatch("([^\n]*)\n") do
-	 log.state(l)
+   if cmdline[3] == "show" then
+      local t = repo.readme_mdwn
+      if t then
+	 if not t:match("\n$") then
+	    t = t .. "\n"
+	 end
+	 for l in t:gmatch("([^\n]*)\n") do
+	    log.state(l)
+	 end
+      else
+	 log.state("# No README.mdwn found")
       end
    else
-      log.state("# No README.mdwn found")
+      local readme = sio.stdin:read("*a")
+      repo:set_readme(readme)
    end
    return "exit", 0
 end