gitql_engine/
engine_output_into.rs

1use std::fs::File;
2use std::io::Write;
3
4use gitql_ast::statement::IntoStatement;
5use gitql_core::object::GitQLObject;
6use gitql_core::values::Value;
7
8pub(crate) fn execute_into_statement(
9    statement: &IntoStatement,
10    gitql_object: &mut GitQLObject,
11) -> Result<(), String> {
12    let mut buffer = String::new();
13
14    let line_terminated_by = &statement.lines_terminated;
15    let field_terminated_by = &statement.fields_terminated;
16    let enclosing = &statement.enclosed;
17
18    // Headers
19    let header = gitql_object.titles.join(field_terminated_by);
20    buffer.push_str(&header);
21    buffer.push_str(line_terminated_by);
22
23    // Rows of the main group
24    if let Some(main_group) = gitql_object.groups.first() {
25        for row in &main_group.rows {
26            let row_values: Vec<String> = row
27                .values
28                .iter()
29                .map(|r| value_to_string_with_optional_enclosing(r, enclosing))
30                .collect();
31            buffer.push_str(&row_values.join(field_terminated_by));
32            buffer.push_str(line_terminated_by);
33        }
34    }
35
36    let file_result = File::create(statement.file_path.clone());
37    if let Err(error) = file_result {
38        return Err(error.to_string());
39    }
40
41    let mut file = file_result.ok().unwrap();
42    let write_result = file.write_all(buffer.as_bytes());
43    if let Err(error) = write_result {
44        return Err(error.to_string());
45    }
46
47    Ok(())
48}
49
50#[inline(always)]
51#[allow(clippy::borrowed_box)]
52fn value_to_string_with_optional_enclosing(value: &Box<dyn Value>, enclosed: &String) -> String {
53    if enclosed.is_empty() {
54        return value.literal();
55    }
56    format!("{}{}{}", enclosed, value.literal(), enclosed)
57}
gitql_engine/engine_output_into.rs

gitql_engine/
engine_output_into.rs
