1 files changed, 125 insertions, 0 deletions
diff --git a/pdf/xpdf/GnomeVFSStream.cc b/pdf/xpdf/GnomeVFSStream.cc
new file mode 100644
index 0000000..324e408
--- /dev/null
+++ b/pdf/xpdf/GnomeVFSStream.cc
@@ -0,0 +1,125 @@
+//========================================================================
+//
+// GnomeVFSStream.cc
+//
+// Copyright 1996-2002 Glyph & Cog, LLC
+// Copyright 2003 Martin Kretzschmar
+//
+//========================================================================
+
+#ifdef __GNUC__
+#pragma implementation
+#endif
+
+#include <aconf.h>
+#include "config.h"
+
+#include "GnomeVFSStream.h"
+#include "gpdf-g-switch.h"
+#  include <libgnomevfs/gnome-vfs.h>
+#include "gpdf-g-switch.h"
+
+#ifndef NO_DECRYPTION
+#include "Decrypt.h"
+#endif
+
+GnomeVFSStream::GnomeVFSStream(GnomeVFSHandle *handleA, Guint startA,
+                               GBool limitedA, Guint lengthA, Object *dictA):
+  BaseStream(dictA) {
+  handle = handleA;
+  start = startA;
+  limited = limitedA;
+  length = lengthA;
+  bufPtr = bufEnd = buf;
+  bufPos = start;
+  savePos = 0;
+  saved = gFalse;
+}
+
+GnomeVFSStream::~GnomeVFSStream() {
+  close();
+}
+
+Stream *GnomeVFSStream::makeSubStream(Guint startA, GBool limitedA,
+                                      Guint lengthA, Object *dictA) {
+  return new GnomeVFSStream(handle, startA, limitedA, lengthA, dictA);
+}
+
+void GnomeVFSStream::reset() {
+  GnomeVFSFileSize offsetReturn;
+  gnome_vfs_tell(handle, &offsetReturn);
+  savePos = (Guint)offsetReturn;
+  saved = gTrue;
+  gnome_vfs_seek(handle, GNOME_VFS_SEEK_START, start);
+  bufPtr = bufEnd = buf;
+  bufPos = start;
+#ifndef NO_DECRYPTION
+  if (decrypt)
+    decrypt->reset();
+#endif
+}
+
+void GnomeVFSStream::close() {
+  if (saved) {
+    gnome_vfs_seek(handle, GNOME_VFS_SEEK_START, savePos);
+    saved = gFalse;
+  }
+}
+
+GBool GnomeVFSStream::fillBuf() {
+  int n;
+  GnomeVFSFileSize bytesRead;
+#ifndef NO_DECRYPTION
+  char *p;
+#endif
+
+  bufPos += bufEnd - buf;
+  bufPtr = bufEnd = buf;
+  if (limited && bufPos >= start + length) {
+    return gFalse;
+  }
+  if (limited && bufPos + gnomeVFSStreamBufSize > start + length) {
+    n = start + length - bufPos;
+  } else {
+    n = gnomeVFSStreamBufSize;
+  }
+  gnome_vfs_read(handle, buf, n, &bytesRead);
+  bufEnd = buf + bytesRead;
+  if (bufPtr >= bufEnd) {
+    return gFalse;
+  }
+#ifndef NO_DECRYPTION
+  if (decrypt) {
+    for (p = buf; p < bufEnd; ++p) {
+      *p = (char)decrypt->decryptByte((Guchar)*p);
+    }
+  }
+#endif
+  return gTrue;
+}
+
+void GnomeVFSStream::setPos(Guint pos, int dir) {
+  Guint size;
+
+  if (dir >= 0) {
+    gnome_vfs_seek(handle, GNOME_VFS_SEEK_START, pos);
+    bufPos = pos;
+  } else {
+    GnomeVFSFileSize offsetReturn;
+    gnome_vfs_seek(handle, GNOME_VFS_SEEK_END, 0);
+    gnome_vfs_tell(handle, &offsetReturn);
+    size = (Guint)offsetReturn;
+    if (pos > size)
+      pos = (Guint)size;
+    gnome_vfs_seek(handle, GNOME_VFS_SEEK_END, -(int)pos);
+    gnome_vfs_tell(handle, &offsetReturn);
+    bufPos = (Guint)offsetReturn;
+  }
+  bufPtr = bufEnd = buf;
+}
+
+void GnomeVFSStream::moveStart(int delta) {
+  start += delta;
+  bufPtr = bufEnd = buf;
+  bufPos = start;
+}