import Foundation
let pattern = #"(HEALTHCHECK)(((?:\s*\\?\s*)--\w+=\w+(?:\s*\\?\s*))*)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
FROM golang as build
RUN apt-get install wget curl && \
wget https://github.com/watchexec/watchexec/releases/download/v1.24.2/watchexec-1.24.2-x86_64-unknown-linux-gnu.deb && \
dpkg -i watchexec-1.24.2-x86_64-unknown-linux-gnu.deb && \
rm watchexec-1.24.2-x86_64-unknown-linux-gnu.deb
ENV REPOSITORY_ROOT="/repositories"
ENV TEMPLATE_DIR="/api/templates"
ENV STATIC_DIR="/api/static"
WORKDIR /api/src
RUN mkdir /.cache && chmod 0777 /.cache
HEALTHCHECK --interval=10s --timeout=10s --retries=3 CMD curl http://localhost:3333/sign-in
USER 1234:1234
ENTRYPOINT ["watchexec", "-r", "-w", "/api", "go", "run", "."]
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression