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move unicode regex to static space

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Signed-off-by: Alex Goodman <alex.goodman@anchore.com>
This commit is contained in:
Alex Goodman 2020-10-08 10:55:57 -04:00
parent 398d8903e7
commit 9edbc65bce
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GPG Key ID: 5CB45AE22BAB7EA7
1 changed files with 4 additions and 2 deletions
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6
syft/cataloger/ruby/parse_gemspec.go
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@ -19,6 +19,9 @@ var _ common.ParserFn = parseGemFileLockEntries
type postProcessor func(string) []string
// match example: Al\u003Ex ---> 003E
var unicodePattern = regexp.MustCompile(`\\u(?P<unicode>[0-9A-F]{4})`)
var patterns = map[string]*regexp.Regexp{
// match example: name = "railties".freeze ---> railties
"name": regexp.MustCompile(`.*\.name\s*=\s*["']{1}(?P<name>.*)["']{1} *`),
@ -107,8 +110,7 @@ func parseGemSpecEntries(_ string, reader io.Reader) ([]pkg.Package, error) {
// renderUtf8 takes any string escaped string sub-sections from the ruby string and replaces those sections with the UTF8 runes.
func renderUtf8(s string) string {
pattern := regexp.MustCompile(`\\u(?P<unicode>[0-9A-F]{4})`)
fullReplacement := pattern.ReplaceAllStringFunc(s, func(unicodeSection string) string {
fullReplacement := unicodePattern.ReplaceAllStringFunc(s, func(unicodeSection string) string {
var replacement string
// note: the json parser already has support for interpreting hex-representations of unicode escaped strings as unicode runes.
// we can do this ourselves with strconv.Atoi, or leverage the existing json package.