Ensure export directory paths are sane, absolute paths all the time

src/app.d

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016-2017 Matthias Klumpp <[email protected]>
+ * Copyright (C) 2016-2021 Matthias Klumpp <[email protected]>
  *
  * Licensed under the GNU Lesser General Public License Version 3
  *
@@ -54,7 +54,7 @@ Application Options:
   --force          Force action.
   -w|--workspace   Define the workspace location.
   -c|--config      Use the given configuration file.
-  -e|--exportDir   Directory to export data to.";
+  --export-dir     Override the workspace root export directory.";
 
 version (unittest) {
 void main () {}
@@ -96,7 +96,7 @@ void main(string[] args)
     bool showVersion;
     bool forceAction;
     string wdir;
-    string edir;
+    string exportDir;
     string configFname;
 
     // parse command-line options
@@ -108,7 +108,7 @@ void main(string[] args)
             "force", &forceAction,
             "workspace|w", &wdir,
             "config|c", &configFname,
-            "exportDir|e", &edir);
+            "export-dir", &exportDir);
     } catch (Exception e) {
         writeln ("Unable to parse parameters: ", e.msg);
         exit (1);
@@ -143,7 +143,7 @@ void main(string[] args)
     }
 
     try {
-        conf.loadFromFile (configFname, wdir, edir);
+        conf.loadFromFile (configFname, wdir, exportDir);
     } catch (Exception e) {
         writefln ("Unable to load configuration: %s", e.msg);
         exit (4);

src/asgen/config.d

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016-2020 Matthias Klumpp <[email protected]>
+ * Copyright (C) 2016-2021 Matthias Klumpp <[email protected]>
  *
  * Licensed under the GNU Lesser General Public License Version 3
  *
@@ -22,7 +22,7 @@ module asgen.config;
 import std.stdio;
 import std.array;
 import std.string : format, toLower;
-import std.path : dirName, buildPath, buildNormalizedPath;
+import std.path : dirName, buildPath, buildNormalizedPath, isAbsolute, absolutePath;
 import std.conv : to;
 import std.json;
 import std.typecons;
@@ -289,6 +289,8 @@ public:
         // allow overriding the workspace location
         if (!enforcedWorkspaceDir.empty)
             workspaceDir = enforcedWorkspaceDir;
+        if (!workspaceDir.isAbsolute)
+            workspaceDir = workspaceDir.absolutePath;
 
         this.projectName = "Unknown";
         if ("ProjectName" in root)
@@ -304,18 +306,22 @@ public:
         if ("HtmlBaseUrl" in root)
             this.htmlBaseUrl = root["HtmlBaseUrl"].str;
 
-        // set the default export directory locations, allow people to override them in the config
-        exportDir      = buildPath (workspaceDir, "export");
-
-        // allow overriding the export  location
-        if (!enforcedExportDir.empty)
+        // set root export directory
+        if (enforcedExportDir.empty) {
+            exportDir = buildPath (workspaceDir, "export");
+        } else {
             exportDir = enforcedExportDir;
+            logInfo ("Using data export directory root from the command-line: %s", exportDir);
+        }
+        if (!exportDir.isAbsolute)
+            exportDir = exportDir.absolutePath;
 
-        mediaExportDir = buildPath (exportDir, "media");
-        dataExportDir  = buildPath (exportDir, "data");
-        hintsExportDir = buildPath (exportDir, "hints");
-        htmlExportDir  = buildPath (exportDir, "html");
-        auto extraMetainfoDir = buildPath (workspaceDir, "extra-metainfo");
+        // set the default export directory locations, allow people to override them in the config
+        // (we convert the relative to absolute paths later)
+        mediaExportDir = "media";
+        dataExportDir  = "data";
+        hintsExportDir = "hints";
+        htmlExportDir  = "html";
 
         if ("ExportDirs" in root) {
             auto edirs = root["ExportDirs"].object;
@@ -339,7 +345,14 @@ public:
             }
         }
 
+        // convert export directory paths to absolute paths if necessary
+        mediaExportDir = mediaExportDir.isAbsolute? mediaExportDir : buildNormalizedPath (exportDir, mediaExportDir);
+        dataExportDir  = dataExportDir.isAbsolute? dataExportDir : buildNormalizedPath (exportDir, dataExportDir);
+        hintsExportDir = hintsExportDir.isAbsolute? hintsExportDir : buildNormalizedPath (exportDir, hintsExportDir);
+        htmlExportDir  = htmlExportDir.isAbsolute? htmlExportDir : buildNormalizedPath (exportDir, htmlExportDir);
+
         // a place where external metainfo data can be injected
+        auto extraMetainfoDir = buildPath (workspaceDir, "extra-metainfo");
         if ("ExtraMetainfoDir" in root)
             extraMetainfoDir = root["ExtraMetainfoDir"].str;