refactor into smaller modules to untangle git and gpg modules

1 files changed, 47 insertions, 0 deletions

diff --git a/src/Propellor/Git/Config.hs b/src/Propellor/Git/Config.hs
new file mode 100644
index 00000000..97835231
--- /dev/null
+++ b/src/Propellor/Git/Config.hs
@@ -0,0 +1,47 @@
+module Propellor.Git.Config where
+
+import Propellor.Git
+import Utility.Process
+import Utility.Exception
+import Utility.SafeCommand
+import Utility.Monad
+
+import Control.Monad
+
+getGitConfigValue :: String -> IO (Maybe String)
+getGitConfigValue key = do
+	value <- catchMaybeIO $
+		takeWhile (/= '\n')
+			<$> readProcess "git" ["config", key]
+	return $ case value of
+		Just v | not (null v) -> Just v
+		_ -> Nothing
+
+-- `git config --bool propellor.blah` outputs "false" if propellor.blah is unset
+-- i.e. the git convention is that the default value of any git-config setting
+-- is "false".  So we don't need a Maybe Bool here.
+getGitConfigBool :: String -> IO Bool
+getGitConfigBool key = do
+	value <- catchMaybeIO $
+		takeWhile (/= '\n')
+			<$> readProcess "git" ["config", "--bool", key]
+	return $ case value of
+		Just "true" -> True
+		_ -> False
+
+setRepoUrl :: String -> IO ()
+setRepoUrl "" = return ()
+setRepoUrl url = do
+	subcmd <- ifM hasOrigin (pure "set-url", pure "add")
+	void $ boolSystem "git" [Param "remote", Param subcmd, Param "origin", Param url]
+	-- same as --set-upstream-to, except origin branch
+	-- may not have been pulled yet
+	branch <- getCurrentBranch
+	let branchval s = "branch." ++ branch ++ "." ++ s
+	void $ boolSystem "git" [Param "config", Param (branchval "remote"), Param "origin"]
+	void $ boolSystem "git" [Param "config", Param (branchval "merge"), Param $ "refs/heads/"++branch]
+
+getRepoUrl :: IO (Maybe String)
+getRepoUrl = getM getGitConfigValue urls
+  where
+	urls = ["remote.deploy.url", "remote.origin.url"]