Support darkplaces.opt from local files too.

If both are present, flags from both get prepended; the execution order is:
[attached darkplaces.opt] [local darkplaces.opt] [command-line flags]

Also added flags -noopt (don't parse darkplaces.opt) and -noselfpack (don't read attached pack).

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12256 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=c15a08f6df5a7f2a4784d6ff946caa70845667c7

diff --git a/fs.c b/fs.c
index e682f6fa482942776d040aa0198388905dec0cc5..f5df1f4aa99378b15b537af3b038a4a101a0225f 100644 (file)
--- a/fs.c
+++ b/fs.c
@@ -1726,55 +1726,78 @@ static void FS_ListGameDirs(void)
 #endif
 */
 
+static void COM_InsertFlags(const char *buf) {
+       const char *p;
+       char *q;
+       const char **new_argv;
+       int i = 0;
+       int args_left = 256;
+       new_argv = (const char **)Mem_Alloc(fs_mempool, sizeof(*com_argv) * (com_argc + args_left + 2));
+       if(com_argc == 0)
+               new_argv[0] = "dummy";  // Can't really happen.
+       else
+               new_argv[0] = com_argv[0];
+       ++i;
+       p = buf;
+       while(COM_ParseToken_Console(&p))
+       {
+               size_t sz = strlen(com_token) + 1; // shut up clang
+               if(i > args_left)
+                       break;
+               q = (char *)Mem_Alloc(fs_mempool, sz);
+               strlcpy(q, com_token, sz);
+               new_argv[i] = q;
+               ++i;
+       }
+       // Now: i <= args_left + 1.
+       if (com_argc >= 1)
+       {
+               memcpy((char *)(&new_argv[i]), &com_argv[1], sizeof(*com_argv) * (com_argc - 1));
+               i += com_argc - 1;
+       }
+       // Now: i <= args_left + (com_argc || 1).
+       new_argv[i] = NULL;
+       com_argv = new_argv;
+       com_argc = i;
+}
+
 /*
 ================
 FS_Init_SelfPack
 ================
 */
+static unsigned char *FS_SysLoadFile (const char *path, mempool_t *pool, qboolean quiet, fs_offset_t *filesizepointer);
 void FS_Init_SelfPack (void)
 {
        PK3_OpenLibrary ();
        fs_mempool = Mem_AllocPool("file management", 0, NULL);
-       if(com_selffd >= 0)
+
+       // Load darkplaces.opt from the FS.
+       if (!COM_CheckParm("-noopt"))
        {
-               fs_selfpack = FS_LoadPackPK3FromFD(com_argv[0], com_selffd, true);
-               if(fs_selfpack)
+               char *buf = (char *) FS_SysLoadFile("darkplaces.opt", tempmempool, true, NULL);
+               if(buf)
+                       COM_InsertFlags(buf);
+               Mem_Free(buf);
+       }
+
+       // Provide the SelfPack.
+       if (!COM_CheckParm("-noselfpack"))
+       {
+               if (com_selffd >= 0)
                {
-                       char *buf, *q;
-                       const char *p;
-                       FS_AddSelfPack();
-                       buf = (char *) FS_LoadFile("darkplaces.opt", tempmempool, true, NULL);
-                       if(buf)
+                       fs_selfpack = FS_LoadPackPK3FromFD(com_argv[0], com_selffd, true);
+                       if(fs_selfpack)
                        {
-                               const char **new_argv;
-                               int i = 0;
-                               int args_left = 256;
-                               new_argv = (const char **)Mem_Alloc(fs_mempool, sizeof(*com_argv) * (com_argc + args_left + 2));
-                               if(com_argc == 0)
-                               {
-                                       new_argv[0] = "dummy";
-                                       com_argc = 1;
-                               }
-                               else
+                               FS_AddSelfPack();
+                               if (!COM_CheckParm("-noopt"))
                                {
-                                       memcpy((char *)(&new_argv[0]), &com_argv[0], sizeof(*com_argv) * com_argc);
+                                       char *buf = (char *) FS_LoadFile("darkplaces.opt", tempmempool, true, NULL);
+                                       if(buf)
+                                               COM_InsertFlags(buf);
+                                       Mem_Free(buf);
                                }
-                               p = buf;
-                               while(COM_ParseToken_Console(&p))
-                               {
-                                       size_t sz = strlen(com_token) + 1; // shut up clang
-                                       if(i >= args_left)
-                                               break;
-                                       q = (char *)Mem_Alloc(fs_mempool, sz);
-                                       strlcpy(q, com_token, sz);
-                                       new_argv[com_argc + i] = q;
-                                       ++i;
-                               }
-                               new_argv[i+com_argc] = NULL;
-                               com_argv = new_argv;
-                               com_argc = com_argc + i;
                        }
-                       Mem_Free(buf);
                }
        }
 }
@@ -3228,19 +3251,17 @@ void FS_Purge (qfile_t* file)
 
 /*
 ============
-FS_LoadFile
+FS_LoadAndCloseQFile
 
-Filename are relative to the quake directory.
+Loads full content of a qfile_t and closes it.
 Always appends a 0 byte.
 ============
 */
-unsigned char *FS_LoadFile (const char *path, mempool_t *pool, qboolean quiet, fs_offset_t *filesizepointer)
+static unsigned char *FS_LoadAndCloseQFile (qfile_t *file, const char *path, mempool_t *pool, qboolean quiet, fs_offset_t *filesizepointer)
 {
-       qfile_t *file;
        unsigned char *buf = NULL;
        fs_offset_t filesize = 0;
 
-       file = FS_OpenVirtualFile(path, quiet);
        if (file)
        {
                filesize = file->real_length;
@@ -3265,6 +3286,36 @@ unsigned char *FS_LoadFile (const char *path, mempool_t *pool, qboolean quiet, f
 }
 
 
+/*
+============
+FS_LoadFile
+
+Filename are relative to the quake directory.
+Always appends a 0 byte.
+============
+*/
+unsigned char *FS_LoadFile (const char *path, mempool_t *pool, qboolean quiet, fs_offset_t *filesizepointer)
+{
+       qfile_t *file = FS_OpenVirtualFile(path, quiet);
+       return FS_LoadAndCloseQFile(file, path, pool, quiet, filesizepointer);
+}
+
+
+/*
+============
+FS_SysLoadFile
+
+Filename are OS paths.
+Always appends a 0 byte.
+============
+*/
+static unsigned char *FS_SysLoadFile (const char *path, mempool_t *pool, qboolean quiet, fs_offset_t *filesizepointer)
+{
+       qfile_t *file = FS_SysOpen(path, "rb", false);
+       return FS_LoadAndCloseQFile(file, path, pool, quiet, filesizepointer);
+}
+
+
 /*
 ============
 FS_WriteFile