Replace references to re with regexp.MustCompile

Signed-off-by: Paul Cacheux <paul.cacheux@datadoghq.com>
This commit is contained in:
Paul Cacheux 2022-01-13 22:06:06 +01:00
parent 1c89ce5fc1
commit 89622d99a1

View file

@ -36,25 +36,25 @@ var (
// that may be part of image names. This is purposely a subset of what is
// allowed by DNS to ensure backwards compatibility with Docker image
// names.
DomainRegexp = re(domain)
DomainRegexp = regexp.MustCompile(domain)
tag = `[\w][\w.-]{0,127}`
// TagRegexp matches valid tag names. From docker/docker:graph/tags.go.
TagRegexp = re(tag)
TagRegexp = regexp.MustCompile(tag)
anchoredTag = anchored(tag)
// anchoredTagRegexp matches valid tag names, anchored at the start and
// end of the matched string.
anchoredTagRegexp = re(anchoredTag)
anchoredTagRegexp = regexp.MustCompile(anchoredTag)
digestPat = `[A-Za-z][A-Za-z0-9]*(?:[-_+.][A-Za-z][A-Za-z0-9]*)*[:][[:xdigit:]]{32,}`
// DigestRegexp matches valid digests.
DigestRegexp = re(digestPat)
DigestRegexp = regexp.MustCompile(digestPat)
anchoredDigest = anchored(digestPat)
// anchoredDigestRegexp matches valid digests, anchored at the start and
// end of the matched string.
anchoredDigestRegexp = re(anchoredDigest)
anchoredDigestRegexp = regexp.MustCompile(anchoredDigest)
namePat = expression(
optional(domain, literal(`/`)),
@ -63,7 +63,7 @@ var (
// NameRegexp is the format for the name component of references. The
// regexp has capturing groups for the domain and name part omitting
// the separating forward slash from either.
NameRegexp = re(namePat)
NameRegexp = regexp.MustCompile(namePat)
anchoredName = anchored(
optional(capture(domain), literal(`/`)),
@ -71,7 +71,7 @@ var (
optional(repeated(literal(`/`), nameComponent))))
// anchoredNameRegexp is used to parse a name value, capturing the
// domain and trailing components.
anchoredNameRegexp = re(anchoredName)
anchoredNameRegexp = regexp.MustCompile(anchoredName)
referencePat = anchored(capture(namePat),
optional(literal(":"), capture(tag)),
@ -79,39 +79,36 @@ var (
// ReferenceRegexp is the full supported format of a reference. The regexp
// is anchored and has capturing groups for name, tag, and digest
// components.
ReferenceRegexp = re(referencePat)
ReferenceRegexp = regexp.MustCompile(referencePat)
identifier = `([a-f0-9]{64})`
// IdentifierRegexp is the format for string identifier used as a
// content addressable identifier using sha256. These identifiers
// are like digests without the algorithm, since sha256 is used.
IdentifierRegexp = re(identifier)
IdentifierRegexp = regexp.MustCompile(identifier)
shortIdentifier = `([a-f0-9]{6,64})`
// ShortIdentifierRegexp is the format used to represent a prefix
// of an identifier. A prefix may be used to match a sha256 identifier
// within a list of trusted identifiers.
ShortIdentifierRegexp = re(shortIdentifier)
ShortIdentifierRegexp = regexp.MustCompile(shortIdentifier)
anchoredIdentifier = anchored(identifier)
// anchoredIdentifierRegexp is used to check or match an
// identifier value, anchored at start and end of string.
anchoredIdentifierRegexp = re(anchoredIdentifier)
anchoredIdentifierRegexp = regexp.MustCompile(anchoredIdentifier)
anchoredShortIdentifier = anchored(shortIdentifier)
// anchoredShortIdentifierRegexp is used to check if a value
// is a possible identifier prefix, anchored at start and end
// of string.
anchoredShortIdentifierRegexp = re(anchoredShortIdentifier)
anchoredShortIdentifierRegexp = regexp.MustCompile(anchoredShortIdentifier)
)
// re compiles the string to a regular expression.
var re = regexp.MustCompile
// literal compiles s into a literal regular expression, escaping any regexp
// reserved characters.
func literal(s string) string {
re := re(regexp.QuoteMeta(s))
re := regexp.MustCompile(regexp.QuoteMeta(s))
if _, complete := re.LiteralPrefix(); !complete {
panic("must be a literal")