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gstregex: add support for switches exposed by RegexBuilder

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The builder allows for instance for switching off case-sensitiveness for
the entire pattern, instead of having to do so inline with `(?i)`.

All the options exposed by the builder at
<https://docs.rs/regex/latest/regex/struct.RegexBuilder.html> can now be
passed as fields of invidual commands, snake-cased.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1508>
This commit is contained in:
Mathieu Duponchelle 2024-03-14 13:08:39 +01:00 committed by Guillaume Desmottes
parent 3f0c6e654b
commit 2374147b0b
1 changed files with 28 additions and 2 deletions
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30
text/regex/src/gstregex/imp.rs
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@ -10,7 +10,7 @@ use gst::glib;
use gst::prelude::*;
use gst::subclass::prelude::*;
use regex::Regex;
use regex::{Regex, RegexBuilder};
use std::default::Default;
use std::sync::Mutex;
@ -193,7 +193,33 @@ impl ObjectImpl for RegEx {
}
};
let regex = match Regex::new(&pattern) {
let mut builder = RegexBuilder::new(&pattern);
builder
.unicode(s.get::<bool>("unicode").unwrap_or(true))
.case_insensitive(s.get::<bool>("case-insensitive").unwrap_or(false))
.multi_line(s.get::<bool>("multi-line").unwrap_or(false))
.dot_matches_new_line(
s.get::<bool>("dot-matches-new-line").unwrap_or(false),
)
.crlf(s.get::<bool>("crlf").unwrap_or(false))
.line_terminator(s.get::<u8>("line-terminator").unwrap_or(b'\n'))
.swap_greed(s.get::<bool>("swap-greed").unwrap_or(false))
.ignore_whitespace(s.get::<bool>("ignore-whitespace").unwrap_or(false))
.octal(s.get::<bool>("octal").unwrap_or(false));
if let Ok(limit) = s.get::<u64>("size-limit") {
builder.size_limit(limit as usize);
}
if let Ok(limit) = s.get::<u64>("dfa-size-limit") {
builder.dfa_size_limit(limit as usize);
}
if let Ok(limit) = s.get::<u32>("nest-limit") {
builder.nest_limit(limit);
}
let regex = match builder.build() {
Ok(regex) => regex,
Err(err) => {
gst::error!(CAT, imp: self, "Failed to compile regex: {:?}", err);