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Code Issues Releases Wiki Activity

Support for line range plus syntax

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This commit is contained in:
Bojan Durdevic
2021-08-21 13:55:52 -04:00
committed by David Peter
parent b3247d9364
commit 0748783404
4 changed files with 36 additions and 3 deletions
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6
src/bin/bat/clap_app.rs
View File

@@ -95,7 +95,8 @@ pub fn build_app(interactive_output: bool) -> ClapApp<'static, 'static> {
'--highlight-line 40' highlights line 40\n \
'--highlight-line 30:40' highlights lines 30 to 40\n \
'--highlight-line :40' highlights lines 1 to 40\n \
'--highlight-line 40:' highlights lines 40 to the end of the file",
'--highlight-line 40:' highlights lines 40 to the end of the file\n \
'--highlight-line 30:+10' highlights lines 30 to 40",
),
)
.arg(
@@ -423,7 +424,8 @@ pub fn build_app(interactive_output: bool) -> ClapApp<'static, 'static> {
'--line-range 30:40' prints lines 30 to 40\n \
'--line-range :40' prints lines 1 to 40\n \
'--line-range 40:' prints lines 40 to the end of the file\n \
'--line-range 40' only prints line 40",
'--line-range 40' only prints line 40\n \
'--line-range 30:+10' prints lines 30 to 40",
),
)
.arg(

28
src/line_range.rs
View File

@@ -47,7 +47,16 @@ impl LineRange {
}
2 => {
new_range.lower = line_numbers[0].parse()?;
new_range.upper = line_numbers[1].parse()?;
new_range.upper = if line_numbers[1].bytes().next().unwrap() == b'+' {
let more_lines = &line_numbers[1][1..]
.parse()
.map_err(|_| "Invalid line number after +")?;
new_range.lower + more_lines
} else {
line_numbers[1].parse()?
};
Ok(new_range)
}
_ => Err(
@@ -100,6 +109,23 @@ fn test_parse_fail() {
assert!(range.is_err());
}
#[test]
fn test_parse_plus() {
let range = LineRange::from("40:+10").expect("Shouldn't fail on test!");
assert_eq!(40, range.lower);
assert_eq!(50, range.upper);
}
#[test]
fn test_parse_plus_fail() {
let range = LineRange::from("40:+z");
assert!(range.is_err());
let range = LineRange::from("40:+-10");
assert!(range.is_err());
let range = LineRange::from("40:+");
assert!(range.is_err());
}
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum RangeCheckResult {
// Within one of the given ranges