libmake 0.2.6

A code generator to reduce repetitive tasks and build high-quality Rust libraries and applications, by providing a simple interface to create projects, generate code, and manage dependencies.
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

// Copyright notice and licensing information.
// These lines indicate the copyright of the software and its licensing terms.
// SPDX-License-Identifier: Apache-2.0 OR MIT indicates dual licensing under Apache 2.0 or MIT licenses.
// Copyright © 2023-2024 LibMake. All rights reserved.

use crate::macro_replace_placeholder;
use crate::models::model_params::FileGenerationParams;
use std::{
    fs::File,
    io::{BufRead, BufReader, Write},
    path::PathBuf,
};

/// Replaces placeholders in a template file with values from the provided parameters
/// and writes the result to an output file.
///
/// # Arguments
///
/// * `template_file` - Path to the template file.
/// * `output_file` - Path to the output file where the result should be written.
/// * `params` - Parameters containing values to replace placeholders in the template.
///
/// # Errors
///
/// Returns an `std::io::Result` error if:
///
/// - The template file cannot be read.
/// - The output file cannot be created or written to.
/// - There are issues parsing the template or replacing placeholders.
///
pub fn replace_placeholders(
    template_file: &PathBuf,
    output_file: &PathBuf,
    params: &FileGenerationParams,
) -> std::io::Result<()> {
    let tpl = File::open(template_file)?;
    let tpl_reader = BufReader::new(tpl);
    let mut output = File::create(output_file)?;
    let tpl_lines = tpl_reader.lines();

    for line in tpl_lines {
        let line = line?;
        let replaced_line = macro_replace_placeholder!(
            line,
            params,
            author,
            build,
            categories,
            description,
            documentation,
            edition,
            email,
            homepage,
            keywords,
            license,
            name,
            output,
            readme,
            repository,
            rustversion,
            version,
            website
        );
        writeln!(output, "{replaced_line}")?;
    }

    Ok(())
}