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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181

use libc::c_uint;
use std::marker;
use std::mem;

use crate::call::Convert;
use crate::util::Binding;
use crate::{raw, Commit, FileFavor, Oid};

/// A structure to represent an annotated commit, the input to merge and rebase.
///
/// An annotated commit contains information about how it was looked up, which
/// may be useful for functions like merge or rebase to provide context to the
/// operation.
pub struct AnnotatedCommit<'repo> {
    raw: *mut raw::git_annotated_commit,
    _marker: marker::PhantomData<Commit<'repo>>,
}

/// Options to specify when merging.
pub struct MergeOptions {
    raw: raw::git_merge_options,
}

impl<'repo> AnnotatedCommit<'repo> {
    /// Gets the commit ID that the given git_annotated_commit refers to
    pub fn id(&self) -> Oid {
        unsafe { Binding::from_raw(raw::git_annotated_commit_id(self.raw)) }
    }
}

impl Default for MergeOptions {
    fn default() -> Self {
        Self::new()
    }
}

impl MergeOptions {
    /// Creates a default set of merge options.
    pub fn new() -> MergeOptions {
        let mut opts = MergeOptions {
            raw: unsafe { mem::zeroed() },
        };
        assert_eq!(unsafe { raw::git_merge_init_options(&mut opts.raw, 1) }, 0);
        opts
    }

    fn flag(&mut self, opt: u32, val: bool) -> &mut MergeOptions {
        if val {
            self.raw.flags |= opt;
        } else {
            self.raw.flags &= !opt;
        }
        self
    }

    /// Detect file renames
    pub fn find_renames(&mut self, find: bool) -> &mut MergeOptions {
        self.flag(raw::GIT_MERGE_FIND_RENAMES as u32, find)
    }

    /// If a conflict occurs, exit immediately instead of attempting to continue
    /// resolving conflicts
    pub fn fail_on_conflict(&mut self, fail: bool) -> &mut MergeOptions {
        self.flag(raw::GIT_MERGE_FAIL_ON_CONFLICT as u32, fail)
    }

    /// Do not write the REUC extension on the generated index
    pub fn skip_reuc(&mut self, skip: bool) -> &mut MergeOptions {
        self.flag(raw::GIT_MERGE_FAIL_ON_CONFLICT as u32, skip)
    }

    /// If the commits being merged have multiple merge bases, do not build a
    /// recursive merge base (by merging the multiple merge bases), instead
    /// simply use the first base.
    pub fn no_recursive(&mut self, disable: bool) -> &mut MergeOptions {
        self.flag(raw::GIT_MERGE_NO_RECURSIVE as u32, disable)
    }

    /// Similarity to consider a file renamed (default 50)
    pub fn rename_threshold(&mut self, thresh: u32) -> &mut MergeOptions {
        self.raw.rename_threshold = thresh;
        self
    }

    ///  Maximum similarity sources to examine for renames (default 200).
    /// If the number of rename candidates (add / delete pairs) is greater
    /// than this value, inexact rename detection is aborted. This setting
    /// overrides the `merge.renameLimit` configuration value.
    pub fn target_limit(&mut self, limit: u32) -> &mut MergeOptions {
        self.raw.target_limit = limit as c_uint;
        self
    }

    /// Maximum number of times to merge common ancestors to build a
    /// virtual merge base when faced with criss-cross merges.  When
    /// this limit is reached, the next ancestor will simply be used
    /// instead of attempting to merge it.  The default is unlimited.
    pub fn recursion_limit(&mut self, limit: u32) -> &mut MergeOptions {
        self.raw.recursion_limit = limit as c_uint;
        self
    }

    /// Specify a side to favor for resolving conflicts
    pub fn file_favor(&mut self, favor: FileFavor) -> &mut MergeOptions {
        self.raw.file_favor = favor.convert();
        self
    }

    fn file_flag(&mut self, opt: u32, val: bool) -> &mut MergeOptions {
        if val {
            self.raw.file_flags |= opt;
        } else {
            self.raw.file_flags &= !opt;
        }
        self
    }

    /// Create standard conflicted merge files
    pub fn standard_style(&mut self, standard: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_STYLE_MERGE as u32, standard)
    }

    /// Create diff3-style file
    pub fn diff3_style(&mut self, diff3: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_STYLE_DIFF3 as u32, diff3)
    }

    /// Condense non-alphanumeric regions for simplified diff file
    pub fn simplify_alnum(&mut self, simplify: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_SIMPLIFY_ALNUM as u32, simplify)
    }

    /// Ignore all whitespace
    pub fn ignore_whitespace(&mut self, ignore: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_IGNORE_WHITESPACE as u32, ignore)
    }

    /// Ignore changes in amount of whitespace
    pub fn ignore_whitespace_change(&mut self, ignore: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_IGNORE_WHITESPACE_CHANGE as u32, ignore)
    }

    /// Ignore whitespace at end of line
    pub fn ignore_whitespace_eol(&mut self, ignore: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_IGNORE_WHITESPACE_EOL as u32, ignore)
    }

    /// Use the "patience diff" algorithm
    pub fn patience(&mut self, patience: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_DIFF_PATIENCE as u32, patience)
    }

    /// Take extra time to find minimal diff
    pub fn minimal(&mut self, minimal: bool) -> &mut MergeOptions {
        self.file_flag(raw::GIT_MERGE_FILE_DIFF_MINIMAL as u32, minimal)
    }

    /// Acquire a pointer to the underlying raw options.
    pub unsafe fn raw(&self) -> *const raw::git_merge_options {
        &self.raw as *const _
    }
}

impl<'repo> Binding for AnnotatedCommit<'repo> {
    type Raw = *mut raw::git_annotated_commit;
    unsafe fn from_raw(raw: *mut raw::git_annotated_commit) -> AnnotatedCommit<'repo> {
        AnnotatedCommit {
            raw: raw,
            _marker: marker::PhantomData,
        }
    }
    fn raw(&self) -> *mut raw::git_annotated_commit {
        self.raw
    }
}

impl<'repo> Drop for AnnotatedCommit<'repo> {
    fn drop(&mut self) {
        unsafe { raw::git_annotated_commit_free(self.raw) }
    }
}