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annotate src/util/mod.rs @ 643:01849ffd0180

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Add an anmrenderer binary.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 02 Aug 2019 20:24:45 +0200
parents afa012bb8021
children 7d92730bf543
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1 //! Module containing a bunch of helper modules.
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2
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3 pub mod bitstream;
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4 pub mod lzss;
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5 pub mod math;
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6
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7 #[cfg(test)]
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8 use std::io;
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9
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10 #[cfg(test)]
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11 pub struct SeekableSlice<'a> {
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12 slice: &'a [u8],
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13 cursor: usize,
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14 }
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15
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16 #[cfg(test)]
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17 impl SeekableSlice<'_> {
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18 pub fn new(slice: &[u8]) -> SeekableSlice {
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19 SeekableSlice {
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20 slice,
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21 cursor: 0,
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22 }
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23 }
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24 }
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25
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26 #[cfg(test)]
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27 impl io::Read for SeekableSlice<'_> {
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28 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
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29 let length = (&self.slice[self.cursor..]).read(buf)?;
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30 self.cursor += length;
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31 Ok(length)
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32 }
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33 }
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34
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35 #[cfg(test)]
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36 impl io::Seek for SeekableSlice<'_> {
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37 fn seek(&mut self, seek_from: io::SeekFrom) -> io::Result<u64> {
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38 match seek_from {
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39 io::SeekFrom::Start(offset) => {
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40 self.cursor = offset as usize;
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41 }
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42 io::SeekFrom::End(offset) => {
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43 self.cursor = (self.slice.len() as i64 + offset) as usize;
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44 }
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45 io::SeekFrom::Current(offset) => {
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46 self.cursor = (self.cursor as i64 + offset) as usize;
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47 }
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48 }
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49 Ok(self.cursor as u64)
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50 }
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51 }