covet 0.6.2

CLI and web frontend for scanning with HP Envy printer / scanners
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

/*
Copyright (C) 2019  Armin Häberling

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
#![forbid(unsafe_code)]

use structopt::StructOpt;
use time;

mod cli;
mod message;
mod scanner;
mod web;

use std::thread;
use std::time::Duration;

use crate::cli::{Opt, ScannerOpt};
use crate::message::scan_job::{ColorSpace, Format, InputSource, ScanJob};
use crate::message::scan_status::AdfState;
use crate::scanner::{Scanner, ScannerError};

fn main() {
    let opt = Opt::from_args();
    match opt {
        Opt::Status(opt) => {
            status(opt);
        }
        Opt::Scan(opt) => {
            let use_tls = !opt.scanner_opts.no_tls;
            scan(
                &opt.scanner_opts.scanner,
                use_tls,
                opt.format.to_internal(),
                opt.color.to_internal(),
                opt.source,
                opt.resolution,
                opt.compression_quality,
            )
            .unwrap_or_else(|e| println!("Error: {}", e));
        }
        Opt::Web(opt) => {
            let use_tls = !opt.scanner_opts.no_tls;
            web::run_server(&opt.scanner_opts.scanner, &opt.listen, opt.port, use_tls);
        }
    }
}

fn status(opt: ScannerOpt) {
    let scanner = Scanner::new(&opt.scanner, !opt.no_tls);
    print_scan_status(&scanner).unwrap_or_else(|e| println!("Error: {}", e));
}

fn print_scan_status(scanner: &Scanner) -> Result<(), ScannerError> {
    println!("Status of scanner {}", scanner.host());
    let status = scanner.get_scan_status()?;
    println!(
        "Scanner: {:?}, Adf: {:?}",
        status.scanner_state(),
        status.adf_state()
    );
    Ok(())
}

impl cli::Format {
    fn to_internal(self) -> Format {
        match self {
            cli::Format::pdf => Format::Pdf,
            cli::Format::jpeg => Format::Jpeg,
        }
    }
}

impl cli::ColorSpace {
    fn to_internal(self) -> ColorSpace {
        match self {
            cli::ColorSpace::gray => ColorSpace::Gray,
            cli::ColorSpace::color => ColorSpace::Color,
        }
    }
}

fn choose_source(source: cli::Source, adf_state: AdfState) -> Result<InputSource, ScannerError> {
    let input_source = match source {
        cli::Source::auto => {
            if adf_state == AdfState::Loaded {
                InputSource::Adf
            } else {
                InputSource::Platen
            }
        }
        cli::Source::adf => {
            if adf_state == AdfState::Loaded {
                InputSource::Adf
            } else {
                return Err(ScannerError::AdfEmpty);
            }
        }
        cli::Source::glass => InputSource::Platen,
    };
    Ok(input_source)
}

fn scan(
    host: &str,
    use_tls: bool,
    format: Format,
    color: ColorSpace,
    source: cli::Source,
    resolution: u32,
    quality: u32,
) -> Result<(), ScannerError> {
    let scanner = Scanner::new(host, use_tls);
    let status = scanner.get_scan_status()?;
    if !status.is_idle() {
        return Err(ScannerError::Busy);
    }
    let input_source = choose_source(source, status.adf_state())?;
    let mut job = scanner.start_job(ScanJob::new(
        input_source,
        resolution,
        quality,
        format,
        color,
    ))?;
    println!("Job: {:?}", job);
    loop {
        let ready = job.retrieve_status()?;
        if ready {
            println!("Job: {:?}", job);
            let output_file = scanner::output_file_name(format, &time::now());
            job.download_to_file(&output_file)?;
            break;
        }
        thread::sleep(Duration::from_millis(500));
    }
    Ok(())
}