Function git_packetline::decode::to_data_line

source · 
pub fn to_data_line(data: &[u8]) -> Result<PacketLineRef<'_>, Error>
Expand description

Obtain a PacketLine from data after assuring data is small enough to fit.

Examples found in repository?
src/read/blocking_io.rs (line 27)
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

    fn read_line_inner<'a>(reader: &mut T, buf: &'a mut [u8]) -> io::Result<Result<PacketLineRef<'a>, decode::Error>> {
        let (hex_bytes, data_bytes) = buf.split_at_mut(4);
        reader.read_exact(hex_bytes)?;
        let num_data_bytes = match decode::hex_prefix(hex_bytes) {
            Ok(decode::PacketLineOrWantedSize::Line(line)) => return Ok(Ok(line)),
            Ok(decode::PacketLineOrWantedSize::Wanted(additional_bytes)) => additional_bytes as usize,
            Err(err) => return Ok(Err(err)),
        };

        let (data_bytes, _) = data_bytes.split_at_mut(num_data_bytes);
        reader.read_exact(data_bytes)?;
        match decode::to_data_line(data_bytes) {
            Ok(line) => Ok(Ok(line)),
            Err(err) => Ok(Err(err)),
        }
    }
More examples
Hide additional examples
src/decode.rs (line 131)
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134

pub fn streaming(data: &[u8]) -> Result<Stream<'_>, Error> {
    let data_len = data.len();
    if data_len < U16_HEX_BYTES {
        return Ok(Stream::Incomplete {
            bytes_needed: U16_HEX_BYTES - data_len,
        });
    }
    let wanted_bytes = match hex_prefix(&data[..U16_HEX_BYTES])? {
        PacketLineOrWantedSize::Wanted(s) => s as usize,
        PacketLineOrWantedSize::Line(line) => {
            return Ok(Stream::Complete {
                line,
                bytes_consumed: 4,
            })
        }
    } + U16_HEX_BYTES;
    if wanted_bytes > MAX_LINE_LEN {
        return Err(Error::DataLengthLimitExceeded {
            length_in_bytes: wanted_bytes,
        });
    }
    if data_len < wanted_bytes {
        return Ok(Stream::Incomplete {
            bytes_needed: wanted_bytes - data_len,
        });
    }

    Ok(Stream::Complete {
        line: to_data_line(&data[U16_HEX_BYTES..wanted_bytes])?,
        bytes_consumed: wanted_bytes,
    })
}