[vfs #1] Add ttvfs, miniz, and minihttp sources

ExternalLibs/ttvfs/VFSLoader.cpp

@@ -0,0 +1,121 @@
+// VFSLoader.cpp - late loading of files not in the tree
+// For conditions of distribution and use, see copyright notice in VFS.h
+
+#include "VFSInternal.h"
+#include "VFSTools.h"
+#include "VFSFile.h"
+#include "VFSDir.h"
+#include "VFSLoader.h"
+
+VFS_NAMESPACE_START
+
+#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
+
+#include <dirent.h>
+
+// based on code in PhysicsFS: http://icculus.org/physfs/
+static bool locateOneElement(char *buf)
+{
+    char *ptr;
+    DIR *dirp;
+
+    ptr = strrchr(buf, '/');  // find entry at end of path.
+
+    //printf("locateOneElem: buf='%s' ptr='%s'\n", ptr, buf);
+
+    if (ptr == NULL)
+    {
+        dirp = opendir(".");
+        ptr = buf;
+    }
+    else
+    {
+        if(ptr != buf) // strip only if not abs path
+            *ptr = '\0';
+        //printf("opendir: '%s'\n", buf);
+        dirp = opendir(buf);
+        *ptr = '/';
+        ptr++;  // point past dirsep to entry itself.
+    }
+
+    //printf("dirp = %p\n", dirp);
+
+    struct dirent *dent;
+    while ((dent = readdir(dirp)) != NULL)
+    {
+        if (strcasecmp(dent->d_name, ptr) == 0)
+        {
+            strcpy(ptr, dent->d_name); // found a match. Overwrite with this case.
+            closedir(dirp);
+            return true;
+        }
+    }
+
+    // no match at all...
+    closedir(dirp);
+    return false;
+}
+
+static bool findFileHarder(char *fn)
+{
+    char *ptr = fn;
+    bool found = true;
+    while ((ptr = strchr(ptr + 1, '/')) != 0)
+    {
+        *ptr = '\0';
+        found = locateOneElement(fn);
+        *ptr = '/'; // restore path separator
+        if (!found)
+            return false;
+    }
+
+    // check final element...
+    found = found && locateOneElement(fn);
+
+    //printf("tt: Fixed case '%s' [%s]\n", fn, found ? "found" : "NOT FOUND"); // TEMP
+    return found;
+}
+#endif
+
+
+VFSFile *VFSLoaderDisk::Load(const char *fn, const char * /*ignored*/)
+{
+    if(FileExists(fn))
+        return new VFSFileReal(fn); // must contain full file name
+
+    VFSFileReal *vf = NULL;
+
+#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
+    size_t s = strlen(fn);
+    char *t = (char*)VFS_STACK_ALLOC(s+1);
+    memcpy(t, fn, s+1); // copy terminating '\0' as well
+    if(findFileHarder(&t[0])) // fixes the filename on the way
+        vf = new VFSFileReal(&t[0]);
+    VFS_STACK_FREE(t);
+#endif
+
+    return vf;
+}
+
+VFSDir *VFSLoaderDisk::LoadDir(const char *fn, const char * /*ignored*/)
+{
+    if(IsDirectory(fn))
+        return new VFSDirReal(fn); // must contain full file name
+
+    VFSDirReal *ret = NULL;
+
+#if !defined(_WIN32) && defined(VFS_IGNORE_CASE)
+    size_t s = strlen(fn);
+    char *t = (char*)VFS_STACK_ALLOC(s+1);
+    memcpy(t, fn, s+1); // copy terminating '\0' as well
+    if(findFileHarder(&t[0])) // fixes the filename on the way
+    {
+        ret = new VFSDirReal(&t[0]);
+    }
+    VFS_STACK_FREE(t);
+#endif
+
+    return ret;
+}
+
+VFS_NAMESPACE_END