pdfshrink 0.1.2

Shrink PDF files using Ghostscript
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
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

#[macro_use]
extern crate clap;
use clap::{Arg, ArgGroup};

use pdfshrink::*;

fn main() {
    let app = app_from_crate!()
        .help_message("print help information")
        .after_help("The options --inplace, --rename and --subdir are mutually exclusive.")
        .arg(
            Arg::with_name("input")
                .multiple(true)
                .required(true)
                .value_name("INPUT")
                .help("input PDF to shrink"),
        )
        .arg(
            Arg::with_name("verbose")
                .long("verbose")
                .short("v")
                .multiple(true)
                .help("set the level of verbosity"),
        )
        .arg(
            Arg::with_name("inplace")
                .long("inplace")
                .short("i")
                .help("replace the original file"),
        )
        .arg(
            Arg::with_name("rename")
                .long("rename")
                .short("r")
                .help("save the output in a renamed file: .pdf -> .slim.pdf"),
        )
        .arg(
            Arg::with_name("subdir")
                .long("subdir")
                .short("d")
                .value_name("SUBDIR")
                .help("save the output in a subdirectory"),
        )
        .arg(
            Arg::with_name("debug")
                .long("debug")
                .help("debug the command line"),
        )
        .arg(
            Arg::with_name("dry-run")
                .long("dry-run")
                .short("n")
                .help("dry run"),
        )
        .group(ArgGroup::with_name("output").args(&["inplace", "rename", "subdir"]));

    let matches = app.get_matches();

    let debug = matches.is_present("debug");
    let dry_run = matches.is_present("dry-run");
    let verbose = matches.is_present("verbose");

    // BEGIN DEBUG
    if debug {
        eprintln!("{:#?}", matches);
        eprintln!("---");
        for arg in &["input", "output", "inplace", "rename", "subdir", "verbose"] {
            eprintln!(
                "{} ({} {}): {:?}",
                arg,
                matches.occurrences_of(arg),
                matches.is_present(arg),
                matches.values_of(arg)
            );
        }
        eprint!("output mode: ");
        if matches.is_present("inplace") {
            eprintln!("inplace");
        } else if matches.is_present("rename") {
            eprintln!("rename");
        } else if matches.is_present("subdir") {
            eprintln!(
                "subdir: {:?}",
                matches.value_of("subdir").unwrap_or("shrunk")
            );
        } else {
            eprintln!("no output mode specified");
        }
        eprintln!();
    }
    // END DEBUG

    for inpath in matches.values_of("input").expect("missing input") {
        let outpath;

        if matches.is_present("inplace") {
            // use tempdir::TempDir;
            todo!("--inplace");
        } else if matches.is_present("subdir") {
            let subdir = matches.value_of("subdir").expect("missing subdir");
            outpath = match pdf_into_subdir(inpath, subdir) {
                Some(p) => p,
                None => {
                    eprintln!(
                        "Cannot process {:?} because the computed output is invalid",
                        inpath
                    );
                    continue;
                }
            };
            if !dry_run {
                let subpath = match pdf_subdir(inpath, subdir) {
                    Some(p) => p,
                    None => {
                        eprintln!(
                            "Cannot process {:?} because the computed subdir is invalid",
                            inpath
                        );
                        continue;
                    }
                };
                if let Err(e) = std::fs::create_dir_all(&subpath) {
                    eprintln!("Cannot create {:?}: {:?}", subpath, e);
                    continue;
                }
            }
        } else {
            outpath = match pdf_to_cmp_pdf(inpath) {
                Some(p) => p,
                None => {
                    eprintln!(
                        "Cannot process {:?} because the computed output is invalid",
                        inpath
                    );
                    continue;
                }
            };
        }

        if verbose {
            println!("Processing {:?} -> {:?}", inpath, outpath);
        }

        if dry_run {
            let mut cmd = dry_run_command(inpath, outpath);

            if verbose {
                println!("Running {:?}", cmd);
            }

            cmd.status().expect("failed to execute command");
        } else {
            let mut cmd = gs_command(inpath, outpath);

            if verbose {
                println!("Running {:?}", cmd);
            }

            cmd.status().expect("failed to execute command");
        }
    }
}