From cc63dda7582687ae7253d2e066b51e0387b484bf Mon Sep 17 00:00:00 2001
From: Meep-Eep <Meep-Eep@8092fc87-c524-0410-9efc-e669fe64eaf9>
Date: Sat, 1 Oct 2011 15:55:13 +0000
Subject: [PATCH] Don't require the 'shadow' dir in addon packs, from Alex.

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@3700 8092fc87-c524-0410-9efc-e669fe64eaf9
---
 sc2/ChangeLog         |  1 +
 sc2/src/libs/uio/io.c | 97 +++++++++++++++++++++++++++++++++++++++++++
 sc2/src/libs/uio/io.h |  6 +++
 sc2/src/options.c     |  8 ++++
 4 files changed, 112 insertions(+)

diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 0b79a5283..7e63cb19e 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,5 @@
 Changes towards version 0.8:
+- Don't require the 'shadow' dir in addon packs, from Alex
 - Make use of GAME_STATE_FILE consistently, from Scott A. Colcord
 - Fixed unconst(), from Scott A. Colcord
 - Fixes to a few small bugs in UIO which shouldn't have had an impact on
diff --git a/sc2/src/libs/uio/io.c b/sc2/src/libs/uio/io.c
index a7c721e67..247d1e24a 100644
--- a/sc2/src/libs/uio/io.c
+++ b/sc2/src/libs/uio/io.c
@@ -287,6 +287,103 @@ uio_mountDir(uio_Repository *destRep, const char *mountPoint,
 	}
 }
 
+// Mount a repository directory into same repository at a different location
+// From fossil.
+uio_MountHandle *
+uio_transplantDir(const char *mountPoint, uio_DirHandle *sourceDir, int flags,
+		uio_MountHandle *relative) {
+	uio_MountInfo *relativeInfo;
+	int numPDirHandles;
+	uio_PDirHandle **pDirHandles;
+	uio_MountTreeItem **treeItems;
+	int i;
+	uio_MountHandle *handle = NULL;
+
+	if ((flags & uio_MOUNT_RDONLY) != uio_MOUNT_RDONLY) {
+		// Only read-only transplants supported atm
+		errno = ENOSYS;
+		return NULL;
+	}
+
+	switch (flags & uio_MOUNT_LOCATION_MASK) {
+		case uio_MOUNT_TOP:
+		case uio_MOUNT_BOTTOM:
+			if (relative != NULL) {
+				errno = EINVAL;
+				return NULL;
+			}
+			relativeInfo = NULL;
+			break;
+		case uio_MOUNT_BELOW:
+		case uio_MOUNT_ABOVE:
+			if (relative == NULL) {
+				errno = EINVAL;
+				return NULL;
+			}
+			relativeInfo = relative->mountInfo;
+			break;
+		default:
+			abort();
+	}
+
+	if (mountPoint[0] == '/')
+		mountPoint++;
+	if (!validPathName(mountPoint, strlen(mountPoint))) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	if (uio_getPathPhysicalDirs(sourceDir, "", 0,
+			&pDirHandles, &numPDirHandles, &treeItems) == -1) {
+		// errno is set
+		return NULL;
+	}
+	if (numPDirHandles == 0) {
+		errno = ENOENT;
+		return NULL;
+	}
+	
+	// TODO: We only transplant the first read-only physical dir that we find
+	//    Maybe transplant all of them? We would then have several
+	//    uio_MountHandles to return.
+	for (i = 0; i < numPDirHandles; ++i) {
+		uio_PDirHandle *pDirHandle = pDirHandles[i];
+		uio_MountInfo *oldMountInfo = treeItems[i]->mountInfo;
+		uio_Repository *rep = oldMountInfo->mountHandle->repository;
+		uio_MountInfo *mountInfo;
+		uio_MountTree *mountTree;
+
+		// Only interested in read-only dirs in this incarnation
+		if (!uio_mountInfoIsReadOnly(oldMountInfo))
+			continue;
+	
+		mountInfo = uio_MountInfo_new(oldMountInfo->fsID, NULL, pDirHandle,
+				uio_strdup(""), oldMountInfo->autoMount, NULL, flags);
+		// New mount references the same handles
+		uio_PDirHandle_ref(pDirHandle);
+		uio_PRoot_refMount(pDirHandle->pRoot);
+
+		uio_repositoryAddMount(rep, mountInfo,
+				flags & uio_MOUNT_LOCATION_MASK, relativeInfo);
+		mountTree = uio_mountTreeAddMountInfo(rep, rep->mountTree,
+				mountInfo, mountPoint, flags & uio_MOUNT_LOCATION_MASK,
+				relativeInfo);
+		// mountTree is the node in rep->mountTree where mountInfo leads to
+		mountInfo->mountTree = mountTree;
+		mountInfo->mountHandle = uio_MountHandle_new(rep, mountInfo);
+		handle = mountInfo->mountHandle;
+		break;
+	}
+
+	uio_PDirHandles_delete(pDirHandles, numPDirHandles);
+	uio_free(treeItems);
+	
+	if (handle == NULL)
+		errno = ENOENT;
+
+	return handle;
+}
+
 int
 uio_unmountDir(uio_MountHandle *mountHandle) {
 	uio_PRoot *pRoot;
diff --git a/sc2/src/libs/uio/io.h b/sc2/src/libs/uio/io.h
index 8e8ce663c..614357a94 100644
--- a/sc2/src/libs/uio/io.h
+++ b/sc2/src/libs/uio/io.h
@@ -82,6 +82,12 @@ uio_MountHandle *uio_mountDir(uio_Repository *destRep, const char *mountPoint,
 		const char *inPath, uio_AutoMount **autoMount, int flags,
 		uio_MountHandle *relative);
 
+// Mount a repository directory into same repository at a different
+// location.
+// From fossil.
+uio_MountHandle *uio_transplantDir(const char *mountPoint,
+		uio_DirHandle *sourceDir, int flags, uio_MountHandle *relative);
+
 // Unmount a previously mounted dir.
 int uio_unmountDir(uio_MountHandle *mountHandle);
 
diff --git a/sc2/src/options.c b/sc2/src/options.c
index 98e710251..96c3f350d 100644
--- a/sc2/src/options.c
+++ b/sc2/src/options.c
@@ -571,6 +571,14 @@ prepareShadowAddons (const char **addons)
 		{
 			log_add (log_Debug, "Mounting shadow content of '%s' addon", addon);
 			mountDirZips (shadowDir, "/", uio_MOUNT_ABOVE, contentMountHandle);
+			// Mount non-zipped shadow content
+			if (uio_transplantDir ("/", shadowDir, uio_MOUNT_RDONLY |
+					uio_MOUNT_ABOVE, contentMountHandle) == NULL)
+			{
+				log_add (log_Warning, "Warning: Could not mount shadow content"
+						" of '%s': %s.", addon, strerror (errno));
+			}
+
 			uio_closeDir (shadowDir);
 		}
 		uio_closeDir (addonDir);