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-rw-r--r--modules/libjar/nsJARInputStream.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/modules/libjar/nsJARInputStream.h b/modules/libjar/nsJARInputStream.h
new file mode 100644
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+++ b/modules/libjar/nsJARInputStream.h
@@ -0,0 +1,74 @@
+/* nsJARInputStream.h
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsJARINPUTSTREAM_h__
+#define nsJARINPUTSTREAM_h__
+
+#include "nsIInputStream.h"
+#include "nsJAR.h"
+#include "nsTArray.h"
+#include "mozilla/Attributes.h"
+
+/*-------------------------------------------------------------------------
+ * Class nsJARInputStream declaration. This class defines the type of the
+ * object returned by calls to nsJAR::GetInputStream(filename) for the
+ * purpose of reading a file item out of a JAR file.
+ *------------------------------------------------------------------------*/
+class nsJARInputStream final : public nsIInputStream {
+ public:
+ nsJARInputStream()
+ : mOutSize(0),
+ mInCrc(0),
+ mOutCrc(0),
+ mNameLen(0),
+ mCurPos(0),
+ mArrPos(0),
+ mMode(MODE_NOTINITED) {
+ memset(&mZs, 0, sizeof(z_stream));
+ }
+
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIINPUTSTREAM
+
+ // takes ownership of |fd|, even on failure
+ nsresult InitFile(nsZipHandle* aFd, const uint8_t* aData, nsZipItem* item);
+
+ nsresult InitDirectory(nsJAR* aJar, const nsACString& aJarDirSpec,
+ const char* aDir);
+
+ private:
+ ~nsJARInputStream() { Close(); }
+
+ RefPtr<nsZipHandle> mFd; // handle for reading
+ uint32_t mOutSize; // inflated size
+ uint32_t mInCrc; // CRC as provided by the zipentry
+ uint32_t mOutCrc; // CRC as calculated by me
+ z_stream mZs; // zip data structure
+
+ /* For directory reading */
+ RefPtr<nsJAR> mJar; // string reference to zipreader
+ uint32_t mNameLen; // length of dirname
+ nsCString mBuffer; // storage for generated text of stream
+ uint32_t mCurPos; // Current position in buffer
+ uint32_t mArrPos; // current position within mArray
+ nsTArray<nsCString> mArray; // array of names in (zip) directory
+
+ typedef enum {
+ MODE_NOTINITED,
+ MODE_CLOSED,
+ MODE_DIRECTORY,
+ MODE_INFLATE,
+ MODE_COPY
+ } JISMode;
+
+ JISMode mMode; // Modus of the stream
+
+ nsresult ContinueInflate(char* aBuf, uint32_t aCount, uint32_t* aBytesRead);
+ nsresult ReadDirectory(char* aBuf, uint32_t aCount, uint32_t* aBytesRead);
+ uint32_t CopyDataToBuffer(char*& aBuffer, uint32_t& aCount);
+};
+
+#endif /* nsJARINPUTSTREAM_h__ */