git2 0.1.9

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

use std::ffi;
use std::error;
use std::fmt;
use std::str;
use libc;
use libc::c_int;

use {raw, ErrorCode};

/// A structure to represent errors coming out of libgit2.
pub struct Error {
    klass: c_int,
    message: String,
}

impl Error {
    /// Returns the last error, or `None` if one is not available.
    pub fn last_error() -> Option<Error> {
        ::init();
        unsafe {
            let last = raw::giterr_last();
            if last.is_null() {None} else {Some(Error::from_raw(last))}
        }
    }

    /// Creates a new error from a raw component.
    ///
    /// This is unsafe as the validity of `raw` cannot be guaranteed. This does
    /// not take ownership of `raw`.
    pub unsafe fn from_raw(raw: *const raw::git_error) -> Error {
        let ptr = (*raw).message as *const _;
        let message = ffi::c_str_to_bytes(&ptr);
        let message = str::from_utf8(message).unwrap();
        Error {
            klass: (*raw).klass,
            message: message.to_string(),
        }
    }

    /// Creates a new error from the given string as the error.
    pub fn from_str(s: &str) -> Error {
        Error {
            message: s.to_string(),
            klass: raw::GIT_ERROR as libc::c_int,
        }
    }

    /// Return the error code associated with this error.
    pub fn code(&self) -> ErrorCode {
        match self.raw_code() {
            raw::GIT_OK => super::ErrorCode::GenericError,
            raw::GIT_ERROR => super::ErrorCode::GenericError,
            raw::GIT_ENOTFOUND => super::ErrorCode::NotFound,
            raw::GIT_EEXISTS => super::ErrorCode::Exists,
            raw::GIT_EAMBIGUOUS => super::ErrorCode::Ambiguous,
            raw::GIT_EBUFS => super::ErrorCode::BufSize,
            raw::GIT_EUSER => super::ErrorCode::User,
            raw::GIT_EBAREREPO => super::ErrorCode::BareRepo,
            raw::GIT_EUNBORNBRANCH => super::ErrorCode::UnbornBranch,
            raw::GIT_EUNMERGED => super::ErrorCode::Unmerged,
            raw::GIT_ENONFASTFORWARD => super::ErrorCode::NotFastForward,
            raw::GIT_EINVALIDSPEC => super::ErrorCode::InvalidSpec,
            raw::GIT_EMERGECONFLICT => super::ErrorCode::MergeConflict,
            raw::GIT_ELOCKED => super::ErrorCode::Locked,
            raw::GIT_EMODIFIED => super::ErrorCode::Modified,
            raw::GIT_PASSTHROUGH => super::ErrorCode::GenericError,
            raw::GIT_ITEROVER => super::ErrorCode::GenericError,
        }
    }

    /// Return the raw error code associated with this error.
    pub fn raw_code(&self) -> raw::git_error_code {
        macro_rules! check( ($($e:ident),*) => (
            $(if self.klass == raw::$e as c_int { raw::$e }) else *
            else {
                raw::GIT_ERROR
            }
        ) );
        check!(
            GIT_OK,
            GIT_ERROR,
            GIT_ENOTFOUND,
            GIT_EEXISTS,
            GIT_EAMBIGUOUS,
            GIT_EBUFS,
            GIT_EUSER,
            GIT_EBAREREPO,
            GIT_EUNBORNBRANCH,
            GIT_EUNMERGED,
            GIT_ENONFASTFORWARD,
            GIT_EINVALIDSPEC,
            GIT_EMERGECONFLICT,
            GIT_ELOCKED,
            GIT_EMODIFIED,
            GIT_PASSTHROUGH,
            GIT_ITEROVER
        )
    }

    /// Return the message associated with this error
    pub fn message(&self) -> &str { self.message.as_slice() }
}

impl error::Error for Error {
    fn description(&self) -> &str { self.message.as_slice() }
    fn detail(&self) -> Option<String> { None }
}

impl fmt::Show for Error {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        try!(write!(f, "[{}] ", self.klass));
        write!(f, "{}", self.message)
    }
}