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

ExternalLibs/ttvfs_zip/VFSDirZip.cpp

@@ -0,0 +1,107 @@
+#include "VFSFileZip.h"
+#include "VFSDirZip.h"
+#include "VFSTools.h"
+
+#include "VFSInternal.h"
+
+#include "miniz.h"
+
+VFS_NAMESPACE_START
+
+
+static size_t zip_read_func(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n)
+{
+    VFSFile *vf = (VFSFile*)pOpaque;
+    mz_int64 cur_ofs = vf->getpos();
+    if((mz_int64)file_ofs < 0)
+        return 0;
+    if(cur_ofs != (mz_int64)file_ofs && !vf->seek((vfspos)file_ofs))
+        return 0;
+    return vf->read(pBuf, n);
+}
+
+static bool zip_reader_init_vfsfile(mz_zip_archive *pZip, VFSFile *vf, mz_uint32 flags)
+{
+    if(!(pZip || vf))
+        return false;
+    vf->open("rb");
+    mz_uint64 file_size = vf->size();
+    if(!file_size)
+    {
+        vf->close();
+        return false;
+    }
+    pZip->m_pRead = zip_read_func;
+    pZip->m_pIO_opaque = vf;
+    if (!mz_zip_reader_init(pZip, file_size, flags))
+    {
+        vf->close();
+        return false;
+    }
+    return true;
+}
+
+
+VFSDirZip::VFSDirZip(VFSFile *zf)
+: VFSDir(zf->fullname()), _zf(zf)
+{
+    _zf->ref++;
+    _setOrigin(this);
+    memset(&_zip, 0, sizeof(_zip));
+}
+
+VFSDirZip::~VFSDirZip()
+{
+    close();
+    _zf->ref--;
+}
+
+bool VFSDirZip::close(void)
+{
+    mz_zip_reader_end(&_zip);
+    _zf->close();
+    return true;
+}
+
+VFSDir *VFSDirZip::createNew(const char *dir) const
+{
+    return VFSDir::createNew(dir); // inside a Zip file; only the base dir can be a real VFSDirZip.
+}
+
+unsigned int VFSDirZip::load(bool /*ignored*/)
+{
+    close();
+
+    if(!zip_reader_init_vfsfile(&_zip, _zf, 0))
+        return 0;
+
+    unsigned int files = mz_zip_reader_get_num_files(&_zip);
+
+    mz_zip_archive_file_stat fs;
+    for (unsigned int i = 0; i < files; ++i)
+    {
+        // FIXME: do we want empty dirs in the tree?
+        if(mz_zip_reader_is_file_a_directory(&_zip, i))
+            continue;
+        if(mz_zip_reader_is_file_encrypted(&_zip, i))
+            continue;
+        if(!mz_zip_reader_file_stat(&_zip, i, &fs))
+            continue;
+        if(getFile(fs.m_filename))
+            continue;
+
+        VFSFileZip *vf = new VFSFileZip(&_zip);
+        vf->_setOrigin(this);
+        memcpy(vf->getZipFileStat(), &fs, sizeof(mz_zip_archive_file_stat));
+        vf->_init();
+        addRecursive(vf, true, VFSDir::NONE);
+        vf->ref--;
+    }
+
+    // Not necessary to keep open all the time, VFSFileZip will re-open the archive if needed
+    //close();
+
+    return files;
+}
+
+VFS_NAMESPACE_END