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
|
/*
* libgit2 "cat-file" example - shows how to print data from the ODB
*
* Written by the libgit2 contributors
*
* To the extent possible under law, the author(s) have dedicated all copyright
* and related and neighboring rights to this software to the public domain
* worldwide. This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication along
* with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#![deny(warnings)]
use std::io::{self, Write};
use git2::{Blob, Commit, ObjectType, Repository, Signature, Tag, Tree};
use structopt::StructOpt;
#[derive(StructOpt)]
struct Args {
#[structopt(name = "object")]
arg_object: String,
#[structopt(short = "t")]
/// show the object type
flag_t: bool,
#[structopt(short = "s")]
/// show the object size
flag_s: bool,
#[structopt(short = "e")]
/// suppress all output
flag_e: bool,
#[structopt(short = "p")]
/// pretty print the contents of the object
flag_p: bool,
#[structopt(name = "quiet", short, long)]
/// suppress output
flag_q: bool,
#[structopt(name = "verbose", short, long)]
flag_v: bool,
#[structopt(name = "dir", long = "git-dir")]
/// use the specified directory as the base directory
flag_git_dir: Option<String>,
}
fn run(args: &Args) -> Result<(), git2::Error> {
let path = args.flag_git_dir.as_ref().map(|s| &s[..]).unwrap_or(".");
let repo = Repository::open(path)?;
let obj = repo.revparse_single(&args.arg_object)?;
if args.flag_v && !args.flag_q {
println!("{} {}\n--", obj.kind().unwrap().str(), obj.id());
}
if args.flag_t {
println!("{}", obj.kind().unwrap().str());
} else if args.flag_s || args.flag_e {
/* ... */
} else if args.flag_p {
match obj.kind() {
Some(ObjectType::Blob) => {
show_blob(obj.as_blob().unwrap());
}
Some(ObjectType::Commit) => {
show_commit(obj.as_commit().unwrap());
}
Some(ObjectType::Tag) => {
show_tag(obj.as_tag().unwrap());
}
Some(ObjectType::Tree) => {
show_tree(obj.as_tree().unwrap());
}
Some(ObjectType::Any) | None => println!("unknown {}", obj.id()),
}
}
Ok(())
}
fn show_blob(blob: &Blob) {
io::stdout().write_all(blob.content()).unwrap();
}
fn show_commit(commit: &Commit) {
println!("tree {}", commit.tree_id());
for parent in commit.parent_ids() {
println!("parent {}", parent);
}
show_sig("author", Some(commit.author()));
show_sig("committer", Some(commit.committer()));
if let Some(msg) = commit.message() {
println!("\n{}", msg);
}
}
fn show_tag(tag: &Tag) {
println!("object {}", tag.target_id());
println!("type {}", tag.target_type().unwrap().str());
println!("tag {}", tag.name().unwrap());
show_sig("tagger", tag.tagger());
if let Some(msg) = tag.message() {
println!("\n{}", msg);
}
}
fn show_tree(tree: &Tree) {
for entry in tree.iter() {
println!(
"{:06o} {} {}\t{}",
entry.filemode(),
entry.kind().unwrap().str(),
entry.id(),
entry.name().unwrap()
);
}
}
fn show_sig(header: &str, sig: Option<Signature>) {
let sig = match sig {
Some(s) => s,
None => return,
};
let offset = sig.when().offset_minutes();
let (sign, offset) = if offset < 0 {
('-', -offset)
} else {
('+', offset)
};
let (hours, minutes) = (offset / 60, offset % 60);
println!(
"{} {} {} {}{:02}{:02}",
header,
sig,
sig.when().seconds(),
sign,
hours,
minutes
);
}
fn main() {
let args = Args::from_args();
match run(&args) {
Ok(()) => {}
Err(e) => println!("error: {}", e),
}
}
|
