git2 0.1.20

Bindings to libgit2 for interoperating with git repositories. This library is both threadsafe and memory safe and allows both reading and writing git repositories. 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120

use std::ffi::{CString, AsOsStr, OsStr, OsString};
use std::path::Path as NewPath;
use std::path::PathBuf;
use libc::{c_char, size_t};

use {raw, Error};

#[doc(hidden)]
pub trait Binding: Sized {
    type Raw;

    unsafe fn from_raw(raw: Self::Raw) -> Self;
    fn raw(&self) -> Self::Raw;

    unsafe fn from_raw_opt<T>(raw: T) -> Option<Self>
        where T: PtrExt + Copy, Self: Binding<Raw=T>
    {
        if raw.is_null() {
            None
        } else {
            Some(Binding::from_raw(raw))
        }
    }
}

pub fn iter2cstrs<T, I>(iter: I) -> Result<(Vec<CString>, Vec<*const c_char>,
                                            raw::git_strarray), Error>
    where T: IntoCString, I: Iterator<Item=T>
{
    let cstrs: Vec<_> = try!(iter.map(|i| i.into_c_string()).collect());
    let ptrs = cstrs.iter().map(|i| i.as_ptr()).collect::<Vec<_>>();
    let raw = raw::git_strarray {
        strings: ptrs.as_ptr() as *mut _,
        count: ptrs.len() as size_t,
    };
    Ok((cstrs, ptrs, raw))
}

/// A class of types that can be converted to C strings.
///
/// These types are represented internally as byte slices and it is quite rare
/// for them to contain an interior 0 byte.
pub trait IntoCString {
    /// Consume this container, converting it into a CString
    fn into_c_string(self) -> Result<CString, Error>;
}

impl<'a, T: IntoCString + Clone> IntoCString for &'a T {
    fn into_c_string(self) -> Result<CString, Error> {
        self.clone().into_c_string()
    }
}

impl<'a> IntoCString for &'a str {
    fn into_c_string(self) -> Result<CString, Error> {
        Ok(try!(CString::new(self)))
    }
}

impl IntoCString for String {
    fn into_c_string(self) -> Result<CString, Error> {
        Ok(try!(CString::new(self.into_bytes())))
    }
}

impl IntoCString for CString {
    fn into_c_string(self) -> Result<CString, Error> { Ok(self) }
}

impl IntoCString for Path {
    fn into_c_string(self) -> Result<CString, Error> {
        Ok(try!(CString::new(self.into_vec())))
    }
}

impl<'a> IntoCString for &'a NewPath {
    fn into_c_string(self) -> Result<CString, Error> {
        self.as_os_str().into_c_string()
    }
}

impl IntoCString for PathBuf {
    fn into_c_string(self) -> Result<CString, Error> {
        self.as_os_str().into_c_string()
    }
}

impl<'a> IntoCString for &'a OsStr {
    fn into_c_string(self) -> Result<CString, Error> {
        self.to_os_string().into_c_string()
    }
}

impl IntoCString for OsString {
    #[cfg(unix)]
    fn into_c_string(self) -> Result<CString, Error> {
        use std::os::unix::OsStrExt;
        Ok(try!(CString::new(self.as_os_str().as_bytes())))
    }
    #[cfg(windows)]
    fn into_c_string(self) -> Result<CString, Error> {
        match self.to_str() {
            Some(s) => s.into_c_string(),
            None => Error::from_str("only valid unicode paths are accepted \
                                     on windows"),
        }
    }
}

impl<'a> IntoCString for &'a [u8] {
    fn into_c_string(self) -> Result<CString, Error> {
        Ok(try!(CString::new(self)))
    }
}

impl IntoCString for Vec<u8> {
    fn into_c_string(self) -> Result<CString, Error> {
        Ok(try!(CString::new(self)))
    }
}