dukit 0.4.2

git cli tool for the feathered
Documentation 
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

use crate::errors::DuckErrors;
use crate::output::DisplayableCliCommand;
use crate::{GIT_SWITCH_UNCOMMITED_CHANGES_ERROR, TEMP_FILE_PATH};
use std::{
    env::var,
    fs::{self, File},
    io::Write,
    process::Command,
};

pub enum BaseCliCommands {
    Status,
    BranchList,
    RemoteBranch,
    OpenEditor,
    AddFile,
    FzfGitBranch,
    GitSwitch,
    GitLog,
}

impl BaseCliCommands {
    /// runs command and returns output as a string
    pub fn run(self, stdin: Option<String>) -> Result<String, DuckErrors> {
        match self {
            BaseCliCommands::OpenEditor => self.open_editor(stdin),
            BaseCliCommands::AddFile => self.add_file(stdin),
            BaseCliCommands::GitSwitch => self.switch_branch(stdin),
            _ => self.run_generic_command(),
        }
    }

    /// gets the cli command as a string
    fn get_cli_command(&self) -> String {
        match self {
            Self::Status => "git status -s".to_string(),
            Self::BranchList => "git branch -l".to_string(),
            Self::RemoteBranch => {
                "git status -uno | grep -E 'Your branch is (ahead|behind|up to date)'".to_string()
            }
            Self::OpenEditor => self.get_editor(),
            Self::AddFile => "git add".to_string(),
            Self::FzfGitBranch => "git branch -l| grep '^[^*]' | fzf".to_string(),
            Self::GitSwitch => "git switch".to_string(),
            Self::GitLog => "git log --oneline".to_string(),
        }
    }

    /// switches to given branch
    fn switch_branch(self, branch_name: Option<String>) -> Result<String, DuckErrors> {
        let branch_name = branch_name.unwrap_or_default();

        let cmd_to_switch_branch = self.get_cli_command() + " " + &branch_name;
        let output = Command::new("sh")
            .arg("-c")
            .arg(cmd_to_switch_branch)
            .output()
            .map_err(|_| DuckErrors::SpawnChildProccesForGeneric)?;

        let stderr = String::from_utf8_lossy(&output.stderr);
        if stderr.contains(GIT_SWITCH_UNCOMMITED_CHANGES_ERROR) {
            return Err(DuckErrors::LocalChangesOverwrittenByCheckout);
        }

        let displayable_output = DisplayableCliCommand(output);
        Ok(displayable_output.to_string())
    }

    /// opens editor with given stdin to display to user
    /// returns a string of the saved file on exit
    fn open_editor(self, stdin: Option<String>) -> Result<String, DuckErrors> {
        let stdin = stdin.unwrap_or_default();
        let mut file =
            File::create(TEMP_FILE_PATH).map_err(|_| DuckErrors::CouldNotWriteToTempFile)?;
        file.write_all(stdin.as_bytes())
            .map_err(|_| DuckErrors::CouldNotWriteToTempFile)?;
        drop(file);

        Command::new(self.get_editor())
            .arg(TEMP_FILE_PATH)
            .spawn()
            .map_err(|_| DuckErrors::SpawnChildProccesForEditor)?
            .wait()
            .map_err(|_| DuckErrors::BadExitCodeForEditor)?;

        Ok(fs::read_to_string(TEMP_FILE_PATH).map_err(|_| DuckErrors::CouldNotReadTempFile))?
    }

    /// runs git add {stdin}
    fn add_file(self, file_name: Option<String>) -> Result<String, DuckErrors> {
        let file_name = file_name.unwrap_or_default();
        let cmd_to_add_file = self.get_cli_command() + " " + &file_name;
        let output = Command::new("sh")
            .arg("-c")
            .arg(cmd_to_add_file)
            .output()
            .map_err(|_| DuckErrors::SpawnChildProccesForGeneric)?;

        let stderr = String::from_utf8_lossy(&output.stderr);
        if !stderr.is_empty() {
            return Err(DuckErrors::GitAdd);
        }

        let displayable_output = DisplayableCliCommand(output);
        Ok(displayable_output.to_string())
    }

    /// runs a generic cli command
    /// returns a string of the output
    fn run_generic_command(self) -> Result<String, DuckErrors> {
        let output = Command::new("sh")
            .arg("-c")
            .arg(self.get_cli_command())
            .output()
            .map_err(|_| DuckErrors::SpawnChildProccesForGeneric)?;

        let stderr = String::from_utf8_lossy(&output.stderr);

        if !stderr.is_empty() {
            return Err(DuckErrors::GitGeneric);
        }

        let displayable_output = DisplayableCliCommand(output);
        Ok(displayable_output.to_string())
    }

    /// gets the default editor the system
    fn get_editor(&self) -> String {
        var("EDITOR").unwrap_or("vi".to_string())
    }
}