From 4b164eed56b6a99c6abde650578d7a30c0e51bf1 Mon Sep 17 00:00:00 2001
From: divverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Thu, 6 Aug 2009 19:06:22 +0000
Subject: [PATCH] provide a list of all gamedirs with modinfo.txt in
 fs_all_gamedirs for later use by menu

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9099 d7cf8633-e32d-0410-b094-e92efae38249
---
 fs.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 fs.h |  9 +++++++++
 2 files changed, 73 insertions(+)

diff --git a/fs.c b/fs.c
index d4b15178..18c98c6b 100644
--- a/fs.c
+++ b/fs.c
@@ -317,6 +317,10 @@ char fs_basedir[MAX_OSPATH];
 int fs_numgamedirs = 0;
 char fs_gamedirs[MAX_GAMEDIRS][MAX_QPATH];
 
+// list of all gamedirs with modinfo.txt
+gamedir_t *fs_all_gamedirs = NULL;
+int fs_all_gamedirs_count = 0;
+
 cvar_t scr_screenshot_name = {0, "scr_screenshot_name","dp", "prefix name for saved screenshots (changes based on -game commandline, as well as which game mode is running; the date is encoded using strftime escapes)"};
 cvar_t fs_empty_files_in_pack_mark_deletions = {0, "fs_empty_files_in_pack_mark_deletions", "0", "if enabled, empty files in a pak/pk3 count as not existing but cancel the search in further packs, effectively allowing patch pak/pk3 files to 'delete' files"};
 
@@ -1422,7 +1426,17 @@ const char *FS_CheckGameDir(const char *gamedir)
 
 	ret = FS_SysCheckGameDir(va("%s%s/", fs_userdir, gamedir));
 	if(ret)
+	{
+		if(!*ret)
+		{
+			// get description from basedir
+			ret = FS_SysCheckGameDir(va("%s%s/", fs_basedir, gamedir));
+			if(ret)
+				return ret;
+			return "";
+		}
 		return ret;
+	}
 
 	ret = FS_SysCheckGameDir(va("%s%s/", fs_basedir, gamedir));
 	if(ret)
@@ -1431,6 +1445,54 @@ const char *FS_CheckGameDir(const char *gamedir)
 	return fs_checkgamedir_missing;
 }
 
+static void FS_ListGameDirs()
+{
+	stringlist_t list, list2;
+	int i, j;
+	const char *info;
+
+	fs_all_gamedirs_count = 0;
+	if(fs_all_gamedirs)
+		Mem_Free(fs_all_gamedirs);
+
+	stringlistinit(&list);
+	listdirectory(&list, va("%s/", fs_basedir), "");
+	listdirectory(&list, va("%s/", fs_userdir), "");
+	stringlistsort(&list);
+
+	stringlistinit(&list2);
+	for(i = 0; i < list.numstrings; ++i)
+	{
+		if(i)
+			if(!strcmp(list.strings[i-1], list.strings[i]))
+				continue;
+		info = FS_CheckGameDir(list.strings[i]);
+		if(!info)
+			continue;
+		if(info == fs_checkgamedir_missing)
+			continue;
+		if(!*info)
+			continue;
+		stringlistappend(&list2, list.strings[i]); 
+	}
+	stringlistfreecontents(&list);
+
+	fs_all_gamedirs = Mem_Alloc(fs_mempool, list2.numstrings * sizeof(*fs_all_gamedirs));
+	for(i = 0; i < list2.numstrings; ++i)
+	{
+		info = FS_CheckGameDir(list2.strings[i]);
+		// all this cannot happen any more, but better be safe than sorry
+		if(!info)
+			continue;
+		if(info == fs_checkgamedir_missing)
+			continue;
+		if(!*info)
+			continue;
+		strlcpy(fs_all_gamedirs[fs_all_gamedirs_count].name, list2.strings[i], sizeof(fs_all_gamedirs[j].name));
+		strlcpy(fs_all_gamedirs[fs_all_gamedirs_count].description, info, sizeof(fs_all_gamedirs[j].description));
+		++fs_all_gamedirs_count;
+	}
+}
 
 /*
 ================
@@ -1567,6 +1629,8 @@ void FS_Init (void)
 	if (fs_basedir[0] && fs_basedir[strlen(fs_basedir) - 1] != '/' && fs_basedir[strlen(fs_basedir) - 1] != '\\')
 		strlcat(fs_basedir, "/", sizeof(fs_basedir));
 
+	FS_ListGameDirs();
+
 	p = FS_CheckGameDir(gamedirname1);
 	if(!p || p == fs_checkgamedir_missing)
 		Con_Printf("WARNING: base gamedir %s%s/ not found!\n", fs_basedir, gamedirname1);
diff --git a/fs.h b/fs.h
index d98216d2..78909aa7 100644
--- a/fs.h
+++ b/fs.h
@@ -79,6 +79,15 @@ int FS_CheckNastyPath (const char *path, qboolean isgamedir);
 extern const char *const fs_checkgamedir_missing; // "(missing)"
 const char *FS_CheckGameDir(const char *gamedir); // returns NULL if nasty, fs_checkgamedir_missing (exact pointer) if missing
 
+typedef struct
+{
+	char name[MAX_OSPATH];
+	char description[8192];
+}
+gamedir_t;
+extern gamedir_t *fs_all_gamedirs; // terminated by entry with empty name
+extern int fs_all_gamedirs_count;
+
 qboolean FS_ChangeGameDirs(int numgamedirs, char gamedirs[][MAX_QPATH], qboolean complain, qboolean failmissing);
 qboolean FS_IsRegisteredQuakePack(const char *name);
 int FS_CRCFile(const char *filename, size_t *filesizepointer);
-- 
2.39.2