codes-common 0.1.9

Support capabilities for codes-* packages.
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

/*!
One-line description.

More detailed description, with

# Example

YYYYY

*/

use crate::build::{input_file_name, Data, DataRow};
use csv::Reader;
use csv::StringRecord;
use std::fs::File;
use tera::{Map, Value};

// ------------------------------------------------------------------------------------------------
// Public Macros
// ------------------------------------------------------------------------------------------------

#[macro_export]
macro_rules! insert_field {
    ($value:expr => $row:ident, $name:expr) => {
        $row.insert($name.to_string(), $value.into());
    };
    ($record:ident, $index:expr => $row:ident, $name:expr) => {
        $row.insert($name.to_string(), $record.get($index).unwrap().into());
    };
    ($record:ident, $index:expr => $row:ident, $name:expr) => {
        $row.insert($name.to_string(), $record.get($index).unwrap().into());
    };
    ($record:ident, $row:ident, $($index:expr => $name:expr),+) => {
        $(
            insert_field!($record, $index => $row, $name);
        )+
    };
    ($record:ident, $index:expr => $row:ident, $name:expr, $field_type:ty) => {{
        let temp = $record.get($index).unwrap();
        let temp = <$field_type>::from_str(temp).unwrap();
        $row.insert($name.to_string(), temp.into());
    }};
    ($record:ident, $row:ident, $($index:expr => $name:expr, $field_type:ty),+) => {
        $(
            insert_field!($record, $index => $row, $name, $field_type);
        )+
    };
}

#[macro_export]
macro_rules! insert_optional_field {
    ($record:ident, $index:expr => $row:ident, $name:expr) => {{
        let temp = $record.get($index).unwrap();
        if !temp.is_empty() {
            $row.insert($name.to_string(), temp.into());
        }
    }};
    ($record:ident, $row:ident, $($index:expr => $name:expr),+) => {
        $(
            insert_optional_field!($record, $index => $row, $name);
        )+
    };
}

// ------------------------------------------------------------------------------------------------
// Public Functions
// ------------------------------------------------------------------------------------------------

pub fn process_scsv_input<D, F>(
    data: D,
    file_name: &str,
    process_row: F,
) -> Result<D, Box<dyn std::error::Error>>
where
    D: Data,
    F: Fn(StringRecord, &mut DataRow) -> Result<String, Box<dyn std::error::Error>>,
{
    process_vsv_input(data, file_name, b';', process_row)
}

pub fn process_csv_input<D, F>(
    data: D,
    file_name: &str,
    process_row: F,
) -> Result<D, Box<dyn std::error::Error>>
where
    D: Data,
    F: Fn(StringRecord, &mut DataRow) -> Result<String, Box<dyn std::error::Error>>,
{
    process_vsv_input(data, file_name, b',', process_row)
}

pub fn process_tsv_input<D, F>(
    data: D,
    file_name: &str,
    process_row: F,
) -> Result<D, Box<dyn std::error::Error>>
where
    D: Data,
    F: Fn(StringRecord, &mut DataRow) -> Result<String, Box<dyn std::error::Error>>,
{
    process_vsv_input(data, file_name, b'\t', process_row)
}

pub fn open_csv_file(
    file_name: &str,
    delimiter: Option<u8>,
) -> Result<Reader<File>, Box<dyn std::error::Error>> {
    let file_name = input_file_name(file_name);

    Ok(csv::ReaderBuilder::new()
        .has_headers(true)
        .delimiter(delimiter.unwrap_or(b','))
        .comment(Some(b'#'))
        .trim(csv::Trim::All)
        .from_reader(File::open(file_name)?))
}

fn process_vsv_input<D, F>(
    mut data: D,
    file_name: &str,
    delimiter: u8,
    process_row: F,
) -> Result<D, Box<dyn std::error::Error>>
where
    D: Data,
    F: Fn(StringRecord, &mut DataRow) -> Result<String, Box<dyn std::error::Error>>,
{
    let mut rdr = open_csv_file(file_name, Some(delimiter))?;

    for result in rdr.records() {
        let record = result?;

        let mut row: Map<String, Value> = Default::default();

        let id = process_row(record, &mut row)?;

        data.insert_row(&id, row);
    }

    Ok(data)
}