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//! ref: composer/vendor/composer/pcre/src/Preg.php
//!
//! The following two exception classes are intentionally not ported:
//!
//! - `PcreException`: thrown when a `preg_*()` call returns false. Composer never feeds a pattern
//! that fails to compile at runtime, so such a failure would be a programming error rather than
//! a recoverable condition; they panic instead.
//! - `UnexpectedNullMatchException`: thrown by the `Preg::*StrictGroups()` variants when a capture
//! group did not participate. Those variants were dropped because Rust's `Option` already
//! distinguishes participating from non-participating groups.
//!
//! See docs/dev/regex-porting.md for more detailed regex porting rules.
pub use shirabe_php_shim::{CaptureKey, PregMatches, PregMatchesAll, PregMatchesAllWithOffsets};
use shirabe_php_shim::{
PregPattern, preg_grep, preg_match_all_offset_capture, preg_match_all2, preg_match_map,
preg_match2, preg_replace_callback, preg_replace2,
};
preg_match_map! {
/// The named capture groups of a single match, keyed by group name alone.
pub struct PregNamedGroups(String => String);
}
#[derive(Debug)]
pub struct Preg;
impl Preg {
pub fn match3<'h>(pattern: impl PregPattern, subject: &'h str) -> Option<PregMatches<'h>> {
Self::match4(pattern, subject, 0)
}
pub fn match4<'h>(
pattern: impl PregPattern,
subject: &'h str,
offset: usize,
) -> Option<PregMatches<'h>> {
preg_match2(pattern, subject, offset)
}
pub fn match_all(pattern: impl PregPattern, subject: &str) -> usize {
Self::match_all2(pattern, subject).occurrence_count()
}
pub fn match_all2(pattern: impl PregPattern, subject: &str) -> PregMatchesAll {
preg_match_all2(pattern, subject)
}
fn match_all_with_offsets5(
pattern: impl PregPattern,
subject: &str,
) -> PregMatchesAllWithOffsets {
preg_match_all_offset_capture(pattern, subject)
}
pub fn replace(pattern: impl PregPattern, replacement: &str, subject: &str) -> String {
preg_replace2(pattern, replacement, subject, -1, None)
}
pub fn replace4(
pattern: impl PregPattern,
replacement: &str,
subject: &str,
limit: i64,
) -> String {
preg_replace2(pattern, replacement, subject, limit, None)
}
pub fn replace5(
pattern: impl PregPattern,
replacement: &str,
subject: &str,
limit: i64,
count: &mut usize,
) -> String {
preg_replace2(pattern, replacement, subject, limit, Some(count))
}
pub fn replace_callback<'h, F: FnMut(&PregMatches<'h>) -> String>(
pattern: impl PregPattern,
mut replacement: F,
subject: &'h str,
) -> String {
let adapter = |matches: &PregMatches<'h>| Ok(replacement(matches));
preg_replace_callback(pattern, adapter, subject).expect("$replacement cannot fail")
}
pub fn grep<T: AsRef<str>>(
pattern: impl PregPattern,
array: impl IntoIterator<Item = T>,
) -> impl Iterator<Item = T> {
preg_grep(pattern, array)
}
pub fn is_match(pattern: impl PregPattern, subject: &str) -> bool {
Self::match4(pattern, subject, 0).is_some()
}
pub fn is_match3<'h>(pattern: impl PregPattern, subject: &'h str) -> Option<PregMatches<'h>> {
Self::match4(pattern, subject, 0)
}
pub fn is_match4<'h>(
pattern: impl PregPattern,
subject: &'h str,
offset: usize,
) -> Option<PregMatches<'h>> {
Self::match4(pattern, subject, offset)
}
pub fn is_match_named(pattern: impl PregPattern, subject: &str) -> Option<PregNamedGroups> {
Some(
preg_match2(pattern, subject, 0)?
.iter()
.filter_map(|(key, value)| match (key, value) {
(CaptureKey::ByName(name), Some(value)) => Some((name, value.to_string())),
_ => None,
})
.collect(),
)
}
/// `is_match3` with the groups positioned by number rather than keyed, for callers that only
/// read numbered groups. Index 0 is the full match; an unmatched group is `None`.
pub fn is_match_with_indexed_captures(
pattern: impl PregPattern,
subject: &str,
) -> Option<Vec<Option<String>>> {
Some(
preg_match2(pattern, subject, 0)?
.iter()
.filter_map(|(key, value)| match key {
CaptureKey::ByIndex(_) => Some(value.map(str::to_string)),
CaptureKey::ByName(_) => None,
})
.collect(),
)
}
pub fn is_match_all(pattern: impl PregPattern, subject: &str) -> PregMatchesAll {
Self::match_all2(pattern, subject)
}
pub fn is_match_all_with_offsets3(
pattern: impl PregPattern,
subject: &str,
) -> PregMatchesAllWithOffsets {
Self::match_all_with_offsets5(pattern, subject)
}
}
|
