gix_object/tree/
write.rs

1use std::io;
2
3use bstr::ByteSlice;
4
5use crate::{
6    Kind, Tree, TreeRef,
7    encode::SPACE,
8    tree::{Entry, EntryRef},
9};
10
11/// Serialization
12impl crate::WriteTo for Tree {
13    /// Serialize this tree to `out` in the git internal format.
14    /// Invalid filename bytes are retained as `input` in the I/O error.
15    /// After [wrapping](gix_error::Error::from_error()), inspect them with [metadata](gix_error::Error::metadata()).
16    fn write_to(&self, out: &mut dyn io::Write) -> io::Result<()> {
17        debug_assert_eq!(
18            &self.entries,
19            &{
20                let mut entries_sorted = self.entries.clone();
21                entries_sorted.sort();
22                entries_sorted
23            },
24            "entries for serialization must be sorted by filename"
25        );
26        let mut buf = Default::default();
27        for Entry { mode, filename, oid } in &self.entries {
28            out.write_all(mode.as_bytes(&mut buf))?;
29            out.write_all(SPACE)?;
30
31            if filename.find_byte(0).is_some() {
32                return Err(io::Error::other(
33                    gix_error::validation("Nullbytes are invalid in file paths as they are separators")
34                        .with("input", filename.as_bstr()),
35                ));
36            }
37            out.write_all(filename)?;
38            out.write_all(b"\0")?;
39
40            out.write_all(oid.as_bytes())?;
41        }
42        Ok(())
43    }
44
45    fn kind(&self) -> Kind {
46        Kind::Tree
47    }
48
49    fn size(&self) -> u64 {
50        let mut buf = Default::default();
51        self.entries
52            .iter()
53            .map(|Entry { mode, filename, oid }| {
54                (mode.as_bytes(&mut buf).len() + 1 + filename.len() + 1 + oid.as_bytes().len()) as u64
55            })
56            .sum()
57    }
58}
59
60/// Serialization
61impl crate::WriteTo for TreeRef<'_> {
62    /// Serialize this tree to `out` in the git internal format.
63    /// Invalid filename bytes are retained as `input` in the I/O error.
64    /// After [wrapping](gix_error::Error::from_error()), inspect them with [metadata](gix_error::Error::metadata()).
65    fn write_to(&self, out: &mut dyn io::Write) -> io::Result<()> {
66        debug_assert_eq!(
67            &{
68                let mut entries_sorted = self.entries.clone();
69                entries_sorted.sort();
70                entries_sorted
71            },
72            &self.entries,
73            "entries for serialization must be sorted by filename"
74        );
75        let mut buf = Default::default();
76        for EntryRef { mode, filename, oid } in &self.entries {
77            out.write_all(mode.as_bytes(&mut buf))?;
78            out.write_all(SPACE)?;
79
80            if filename.find_byte(0).is_some() {
81                return Err(io::Error::other(
82                    gix_error::validation("Nullbytes are invalid in file paths as they are separators")
83                        .with("input", *filename),
84                ));
85            }
86            out.write_all(filename)?;
87            out.write_all(b"\0")?;
88
89            out.write_all(oid.as_bytes())?;
90        }
91        Ok(())
92    }
93
94    fn kind(&self) -> Kind {
95        Kind::Tree
96    }
97
98    fn size(&self) -> u64 {
99        let mut buf = Default::default();
100        self.entries
101            .iter()
102            .map(|EntryRef { mode, filename, oid }| {
103                (mode.as_bytes(&mut buf).len() + 1 + filename.len() + 1 + oid.as_bytes().len()) as u64
104            })
105            .sum()
106    }
107}
gix_object/tree/write.rs

gix_object/tree/
write.rs
