gix_object/tree/
write.rs

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