From ce0b7ec230703d239b3d77e09352c0b1d515d8f5 Mon Sep 17 00:00:00 2001
From: pacien
Date: Fri, 21 Feb 2020 15:39:01 +0100
Subject: compiler: add gallery config file CLI argument

GitHub: closes #136
---
 compiler/app/Main.hs     | 12 ++++++++++--
 compiler/src/Compiler.hs | 16 +++++++++-------
 ldgallery.1.md           |  4 ++++
 3 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/compiler/app/Main.hs b/compiler/app/Main.hs
index 753f281..1229e88 100644
--- a/compiler/app/Main.hs
+++ b/compiler/app/Main.hs
@@ -37,8 +37,9 @@ data ViewerConfig = ViewerConfig
 
 
 data Options = Options
-  { inputDir :: String
-  , outputDir :: String
+  { inputDir :: FilePath
+  , outputDir :: FilePath
+  , galleryConfig :: FilePath
   , rebuilAll :: Bool
   , cleanOutput :: Bool
   , withViewer :: Bool
@@ -58,6 +59,12 @@ options = Options
       &= name "output-dir"
       &= explicit
       &= help "Generated gallery output path (default=./out)"
+  , galleryConfig = ""
+      &= typFile
+      &= name "g"
+      &= name "gallery-config"
+      &= explicit
+      &= help "Gallery configuration file (default=$input-dir/gallery.yaml)"
   , rebuilAll = False
       &= name "r"
       &= name "rebuild-all"
@@ -99,6 +106,7 @@ main =
     buildGallery opts =
       checkDistinctPaths (inputDir opts) (outputDir opts)
       >>  compileGallery
+            (galleryConfig opts)
             (inputDir opts)
             (galleryOutputDir opts)
             [outputDir opts]
diff --git a/compiler/src/Compiler.hs b/compiler/src/Compiler.hs
index bfefa63..bb0ee97 100644
--- a/compiler/src/Compiler.hs
+++ b/compiler/src/Compiler.hs
@@ -47,8 +47,8 @@ import Processors
   , skipCached, withCached )
 
 
-galleryConf :: String
-galleryConf = "gallery.yaml"
+defaultGalleryConf :: String
+defaultGalleryConf = "gallery.yaml"
 
 indexFile :: String
 indexFile = "index.json"
@@ -74,7 +74,6 @@ galleryDirFilter :: CompilerConfig -> [FilePath] -> FSNode -> Bool
 galleryDirFilter config excludedCanonicalDirs =
       (not . isHidden)
   &&& (not . isExcludedDir)
-  &&& (not . matchesFile (== galleryConf))
   &&& ((matchesDir $ anyPattern $ includedDirectories config) |||
        (matchesFile $ anyPattern $ includedFiles config))
   &&& (not . ((matchesDir $ anyPattern $ excludedDirectories config) |||
@@ -100,10 +99,10 @@ galleryDirFilter config excludedCanonicalDirs =
     isExcludedDir File{} = False
 
 
-compileGallery :: FilePath -> FilePath -> [FilePath] -> Bool -> Bool -> IO ()
-compileGallery inputDirPath outputDirPath excludedDirs rebuildAll cleanOutput =
+compileGallery :: FilePath -> FilePath -> FilePath -> [FilePath] -> Bool -> Bool -> IO ()
+compileGallery configPath inputDirPath outputDirPath excludedDirs rebuildAll cleanOutput =
   do
-    fullConfig <- readConfig inputGalleryConf
+    fullConfig <- readConfig $ inputGalleryConf configPath
     let config = compiler fullConfig
 
     inputDir <- readDirectory inputDirPath
@@ -123,7 +122,10 @@ compileGallery inputDirPath outputDirPath excludedDirs rebuildAll cleanOutput =
     writeJSON outputViewerConf $ viewer fullConfig
 
   where
-    inputGalleryConf = inputDirPath </> galleryConf
+    inputGalleryConf :: FilePath -> FilePath
+    inputGalleryConf "" = inputDirPath </> defaultGalleryConf
+    inputGalleryConf file = file
+
     outputIndex = outputDirPath </> indexFile
     outputViewerConf = outputDirPath </> viewerConfFile
 
diff --git a/ldgallery.1.md b/ldgallery.1.md
index a5d0e4c..e891345 100644
--- a/ldgallery.1.md
+++ b/ldgallery.1.md
@@ -33,6 +33,10 @@ Available options are:
   Must be distinct from the source directory.
   Defaults to ./out.
 
+-g, \--gallery-config _FILE_
+: Gallery configuration file.
+  Defaults to $input-dir/gallery.yaml.
+
 -r, \--rebuild-all
 : Invalidate cache and recompile everything.
 
-- 
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