1 files changed, 0 insertions, 418 deletions
diff --git a/vendor/miniz_oxide/src/inflate/stream.rs b/vendor/miniz_oxide/src/inflate/stream.rs
deleted file mode 100644
index ee681b6..0000000
--- a/vendor/miniz_oxide/src/inflate/stream.rs
+++ /dev/null
@@ -1,418 +0,0 @@
-//! Extra streaming decompression functionality.
-//!
-//! As of now this is mainly intended for use to build a higher-level wrapper.
-#[cfg(feature = "with-alloc")]
-use crate::alloc::boxed::Box;
-use core::{cmp, mem};
-
-use crate::inflate::core::{decompress, inflate_flags, DecompressorOxide, TINFL_LZ_DICT_SIZE};
-use crate::inflate::TINFLStatus;
-use crate::{DataFormat, MZError, MZFlush, MZResult, MZStatus, StreamResult};
-
-/// Tag that determines reset policy of [InflateState](struct.InflateState.html)
-pub trait ResetPolicy {
-    /// Performs reset
-    fn reset(&self, state: &mut InflateState);
-}
-
-/// Resets state, without performing expensive ops (e.g. zeroing buffer)
-///
-/// Note that not zeroing buffer can lead to security issues when dealing with untrusted input.
-pub struct MinReset;
-
-impl ResetPolicy for MinReset {
-    fn reset(&self, state: &mut InflateState) {
-        state.decompressor().init();
-        state.dict_ofs = 0;
-        state.dict_avail = 0;
-        state.first_call = true;
-        state.has_flushed = false;
-        state.last_status = TINFLStatus::NeedsMoreInput;
-    }
-}
-
-/// Resets state and zero memory, continuing to use the same data format.
-pub struct ZeroReset;
-
-impl ResetPolicy for ZeroReset {
-    #[inline]
-    fn reset(&self, state: &mut InflateState) {
-        MinReset.reset(state);
-        state.dict = [0; TINFL_LZ_DICT_SIZE];
-    }
-}
-
-/// Full reset of the state, including zeroing memory.
-///
-/// Requires to provide new data format.
-pub struct FullReset(pub DataFormat);
-
-impl ResetPolicy for FullReset {
-    #[inline]
-    fn reset(&self, state: &mut InflateState) {
-        ZeroReset.reset(state);
-        state.data_format = self.0;
-    }
-}
-
-/// A struct that compbines a decompressor with extra data for streaming decompression.
-///
-pub struct InflateState {
-    /// Inner decompressor struct
-    decomp: DecompressorOxide,
-
-    /// Buffer of input bytes for matches.
-    /// TODO: Could probably do this a bit cleaner with some
-    /// Cursor-like class.
-    /// We may also look into whether we need to keep a buffer here, or just one in the
-    /// decompressor struct.
-    dict: [u8; TINFL_LZ_DICT_SIZE],
-    /// Where in the buffer are we currently at?
-    dict_ofs: usize,
-    /// How many bytes of data to be flushed is there currently in the buffer?
-    dict_avail: usize,
-
-    first_call: bool,
-    has_flushed: bool,
-
-    /// Whether the input data is wrapped in a zlib header and checksum.
-    /// TODO: This should be stored in the decompressor.
-    data_format: DataFormat,
-    last_status: TINFLStatus,
-}
-
-impl Default for InflateState {
-    fn default() -> Self {
-        InflateState {
-            decomp: DecompressorOxide::default(),
-            dict: [0; TINFL_LZ_DICT_SIZE],
-            dict_ofs: 0,
-            dict_avail: 0,
-            first_call: true,
-            has_flushed: false,
-            data_format: DataFormat::Raw,
-            last_status: TINFLStatus::NeedsMoreInput,
-        }
-    }
-}
-impl InflateState {
-    /// Create a new state.
-    ///
-    /// Note that this struct is quite large due to internal buffers, and as such storing it on
-    /// the stack is not recommended.
-    ///
-    /// # Parameters
-    /// `data_format`: Determines whether the compressed data is assumed to wrapped with zlib
-    /// metadata.
-    pub fn new(data_format: DataFormat) -> InflateState {
-        InflateState {
-            data_format,
-            ..Default::default()
-        }
-    }
-
-    /// Create a new state on the heap.
-    ///
-    /// # Parameters
-    /// `data_format`: Determines whether the compressed data is assumed to wrapped with zlib
-    /// metadata.
-    #[cfg(feature = "with-alloc")]
-    pub fn new_boxed(data_format: DataFormat) -> Box<InflateState> {
-        let mut b: Box<InflateState> = Box::default();
-        b.data_format = data_format;
-        b
-    }
-
-    /// Access the innner decompressor.
-    pub fn decompressor(&mut self) -> &mut DecompressorOxide {
-        &mut self.decomp
-    }
-
-    /// Return the status of the last call to `inflate` with this `InflateState`.
-    pub const fn last_status(&self) -> TINFLStatus {
-        self.last_status
-    }
-
-    /// Create a new state using miniz/zlib style window bits parameter.
-    ///
-    /// The decompressor does not support different window sizes. As such,
-    /// any positive (>0) value will set the zlib header flag, while a negative one
-    /// will not.
-    #[cfg(feature = "with-alloc")]
-    pub fn new_boxed_with_window_bits(window_bits: i32) -> Box<InflateState> {
-        let mut b: Box<InflateState> = Box::default();
-        b.data_format = DataFormat::from_window_bits(window_bits);
-        b
-    }
-
-    #[inline]
-    /// Reset the decompressor without re-allocating memory, using the given
-    /// data format.
-    pub fn reset(&mut self, data_format: DataFormat) {
-        self.reset_as(FullReset(data_format));
-    }
-
-    #[inline]
-    /// Resets the state according to specified policy.
-    pub fn reset_as<T: ResetPolicy>(&mut self, policy: T) {
-        policy.reset(self)
-    }
-}
-
-/// Try to decompress from `input` to `output` with the given [`InflateState`]
-///
-/// # `flush`
-///
-/// Generally, the various [`MZFlush`] flags have meaning only on the compression side.  They can be
-/// supplied here, but the only one that has any semantic meaning is [`MZFlush::Finish`], which is a
-/// signal that the stream is expected to finish, and failing to do so is an error.  It isn't
-/// necessary to specify it when the stream ends; you'll still get returned a
-/// [`MZStatus::StreamEnd`] anyway.  Other values either have no effect or cause errors.  It's
-/// likely that you'll almost always just want to use [`MZFlush::None`].
-///
-/// # Errors
-///
-/// Returns [`MZError::Buf`] if the size of the `output` slice is empty or no progress was made due
-/// to lack of expected input data, or if called with [`MZFlush::Finish`] and input wasn't all
-/// consumed.
-///
-/// Returns [`MZError::Data`] if this or a a previous call failed with an error return from
-/// [`TINFLStatus`]; probably indicates corrupted data.
-///
-/// Returns [`MZError::Stream`] when called with [`MZFlush::Full`] (meaningless on
-/// decompression), or when called without [`MZFlush::Finish`] after an earlier call with
-/// [`MZFlush::Finish`] has been made.
-pub fn inflate(
-    state: &mut InflateState,
-    input: &[u8],
-    output: &mut [u8],
-    flush: MZFlush,
-) -> StreamResult {
-    let mut bytes_consumed = 0;
-    let mut bytes_written = 0;
-    let mut next_in = input;
-    let mut next_out = output;
-
-    if flush == MZFlush::Full {
-        return StreamResult::error(MZError::Stream);
-    }
-
-    let mut decomp_flags = if state.data_format == DataFormat::Zlib {
-        inflate_flags::TINFL_FLAG_COMPUTE_ADLER32
-    } else {
-        inflate_flags::TINFL_FLAG_IGNORE_ADLER32
-    };
-
-    if (state.data_format == DataFormat::Zlib)
-        | (state.data_format == DataFormat::ZLibIgnoreChecksum)
-    {
-        decomp_flags |= inflate_flags::TINFL_FLAG_PARSE_ZLIB_HEADER;
-    }
-
-    let first_call = state.first_call;
-    state.first_call = false;
-    if (state.last_status as i32) < 0 {
-        return StreamResult::error(MZError::Data);
-    }
-
-    if state.has_flushed && (flush != MZFlush::Finish) {
-        return StreamResult::error(MZError::Stream);
-    }
-    state.has_flushed |= flush == MZFlush::Finish;
-
-    if (flush == MZFlush::Finish) && first_call {
-        decomp_flags |= inflate_flags::TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF;
-
-        let status = decompress(&mut state.decomp, next_in, next_out, 0, decomp_flags);
-        let in_bytes = status.1;
-        let out_bytes = status.2;
-        let status = status.0;
-
-        state.last_status = status;
-
-        bytes_consumed += in_bytes;
-        bytes_written += out_bytes;
-
-        let ret_status = {
-            if (status as i32) < 0 {
-                Err(MZError::Data)
-            } else if status != TINFLStatus::Done {
-                state.last_status = TINFLStatus::Failed;
-                Err(MZError::Buf)
-            } else {
-                Ok(MZStatus::StreamEnd)
-            }
-        };
-        return StreamResult {
-            bytes_consumed,
-            bytes_written,
-            status: ret_status,
-        };
-    }
-
-    if flush != MZFlush::Finish {
-        decomp_flags |= inflate_flags::TINFL_FLAG_HAS_MORE_INPUT;
-    }
-
-    if state.dict_avail != 0 {
-        bytes_written += push_dict_out(state, &mut next_out);
-        return StreamResult {
-            bytes_consumed,
-            bytes_written,
-            status: Ok(
-                if (state.last_status == TINFLStatus::Done) && (state.dict_avail == 0) {
-                    MZStatus::StreamEnd
-                } else {
-                    MZStatus::Ok
-                },
-            ),
-        };
-    }
-
-    let status = inflate_loop(
-        state,
-        &mut next_in,
-        &mut next_out,
-        &mut bytes_consumed,
-        &mut bytes_written,
-        decomp_flags,
-        flush,
-    );
-    StreamResult {
-        bytes_consumed,
-        bytes_written,
-        status,
-    }
-}
-
-fn inflate_loop(
-    state: &mut InflateState,
-    next_in: &mut &[u8],
-    next_out: &mut &mut [u8],
-    total_in: &mut usize,
-    total_out: &mut usize,
-    decomp_flags: u32,
-    flush: MZFlush,
-) -> MZResult {
-    let orig_in_len = next_in.len();
-    loop {
-        let status = decompress(
-            &mut state.decomp,
-            *next_in,
-            &mut state.dict,
-            state.dict_ofs,
-            decomp_flags,
-        );
-
-        let in_bytes = status.1;
-        let out_bytes = status.2;
-        let status = status.0;
-
-        state.last_status = status;
-
-        *next_in = &next_in[in_bytes..];
-        *total_in += in_bytes;
-
-        state.dict_avail = out_bytes;
-        *total_out += push_dict_out(state, next_out);
-
-        // The stream was corrupted, and decompression failed.
-        if (status as i32) < 0 {
-            return Err(MZError::Data);
-        }
-
-        // The decompressor has flushed all it's data and is waiting for more input, but
-        // there was no more input provided.
-        if (status == TINFLStatus::NeedsMoreInput) && orig_in_len == 0 {
-            return Err(MZError::Buf);
-        }
-
-        if flush == MZFlush::Finish {
-            if status == TINFLStatus::Done {
-                // There is not enough space in the output buffer to flush the remaining
-                // decompressed data in the internal buffer.
-                return if state.dict_avail != 0 {
-                    Err(MZError::Buf)
-                } else {
-                    Ok(MZStatus::StreamEnd)
-                };
-            // No more space in the output buffer, but we're not done.
-            } else if next_out.is_empty() {
-                return Err(MZError::Buf);
-            }
-        } else {
-            // We're not expected to finish, so it's fine if we can't flush everything yet.
-            let empty_buf = next_in.is_empty() || next_out.is_empty();
-            if (status == TINFLStatus::Done) || empty_buf || (state.dict_avail != 0) {
-                return if (status == TINFLStatus::Done) && (state.dict_avail == 0) {
-                    // No more data left, we're done.
-                    Ok(MZStatus::StreamEnd)
-                } else {
-                    // Ok for now, still waiting for more input data or output space.
-                    Ok(MZStatus::Ok)
-                };
-            }
-        }
-    }
-}
-
-fn push_dict_out(state: &mut InflateState, next_out: &mut &mut [u8]) -> usize {
-    let n = cmp::min(state.dict_avail as usize, next_out.len());
-    (next_out[..n]).copy_from_slice(&state.dict[state.dict_ofs..state.dict_ofs + n]);
-    *next_out = &mut mem::take(next_out)[n..];
-    state.dict_avail -= n;
-    state.dict_ofs = (state.dict_ofs + (n)) & (TINFL_LZ_DICT_SIZE - 1);
-    n
-}
-
-#[cfg(test)]
-mod test {
-    use super::{inflate, InflateState};
-    use crate::{DataFormat, MZFlush, MZStatus};
-    use alloc::vec;
-
-    #[test]
-    fn test_state() {
-        let encoded = [
-            120u8, 156, 243, 72, 205, 201, 201, 215, 81, 168, 202, 201, 76, 82, 4, 0, 27, 101, 4,
-            19,
-        ];
-        let mut out = vec![0; 50];
-        let mut state = InflateState::new_boxed(DataFormat::Zlib);
-        let res = inflate(&mut state, &encoded, &mut out, MZFlush::Finish);
-        let status = res.status.expect("Failed to decompress!");
-        assert_eq!(status, MZStatus::StreamEnd);
-        assert_eq!(out[..res.bytes_written as usize], b"Hello, zlib!"[..]);
-        assert_eq!(res.bytes_consumed, encoded.len());
-
-        state.reset_as(super::ZeroReset);
-        out.iter_mut().map(|x| *x = 0).count();
-        let res = inflate(&mut state, &encoded, &mut out, MZFlush::Finish);
-        let status = res.status.expect("Failed to decompress!");
-        assert_eq!(status, MZStatus::StreamEnd);
-        assert_eq!(out[..res.bytes_written as usize], b"Hello, zlib!"[..]);
-        assert_eq!(res.bytes_consumed, encoded.len());
-
-        state.reset_as(super::MinReset);
-        out.iter_mut().map(|x| *x = 0).count();
-        let res = inflate(&mut state, &encoded, &mut out, MZFlush::Finish);
-        let status = res.status.expect("Failed to decompress!");
-        assert_eq!(status, MZStatus::StreamEnd);
-        assert_eq!(out[..res.bytes_written as usize], b"Hello, zlib!"[..]);
-        assert_eq!(res.bytes_consumed, encoded.len());
-        assert_eq!(state.decompressor().adler32(), Some(459605011));
-
-        // Test state when not computing adler.
-        state = InflateState::new_boxed(DataFormat::ZLibIgnoreChecksum);
-        out.iter_mut().map(|x| *x = 0).count();
-        let res = inflate(&mut state, &encoded, &mut out, MZFlush::Finish);
-        let status = res.status.expect("Failed to decompress!");
-        assert_eq!(status, MZStatus::StreamEnd);
-        assert_eq!(out[..res.bytes_written as usize], b"Hello, zlib!"[..]);
-        assert_eq!(res.bytes_consumed, encoded.len());
-        // Not computed, so should be Some(1)
-        assert_eq!(state.decompressor().adler32(), Some(1));
-        // Should still have the checksum read from the header file.
-        assert_eq!(state.decompressor().adler32_header(), Some(459605011))
-    }
-}