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@@ -1,6 +1,9 @@
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package rext
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import "regexp"
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import (
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"gogs.mikescher.com/BlackForestBytes/goext/langext"
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"regexp"
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)
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type Regex interface {
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IsMatch(haystack string) bool
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@@ -29,6 +32,10 @@ type RegexMatchGroup struct {
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end int
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}
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type OptRegexMatchGroup struct {
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v *RegexMatchGroup
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}
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func W(rex *regexp.Regexp) Regex {
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return ®exWrapper{rex: rex, subnames: rex.SubexpNames()}
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}
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@@ -97,7 +104,7 @@ func (m RegexMatch) GroupByIndex(idx int) RegexMatchGroup {
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return RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[idx*2], end: m.submatchesIndex[idx*2+1]}
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}
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// GroupByName returns the value of a matched group (group 0 == whole match)
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// GroupByName returns the value of a matched group (panics if not found!)
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func (m RegexMatch) GroupByName(name string) RegexMatchGroup {
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for idx, subname := range m.subnames {
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if subname == name {
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@@ -107,6 +114,16 @@ func (m RegexMatch) GroupByName(name string) RegexMatchGroup {
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panic("failed to find regex-group by name")
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}
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// GroupByName returns the value of a matched group (returns empty OptRegexMatchGroup if not found)
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func (m RegexMatch) GroupByNameOrEmpty(name string) OptRegexMatchGroup {
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for idx, subname := range m.subnames {
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if subname == name {
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return OptRegexMatchGroup{&RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[idx*2], end: m.submatchesIndex[idx*2+1]}}
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}
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}
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return OptRegexMatchGroup{}
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}
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// ---------------------------------------------------------------------------------------------------------------------
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func (g RegexMatchGroup) Value() string {
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@@ -128,3 +145,47 @@ func (g RegexMatchGroup) Range() (int, int) {
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func (g RegexMatchGroup) Length() int {
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return g.end - g.start
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}
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// ---------------------------------------------------------------------------------------------------------------------
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func (g OptRegexMatchGroup) Value() string {
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return g.v.Value()
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}
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func (g OptRegexMatchGroup) ValueOrEmpty() string {
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if g.v == nil {
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return ""
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}
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return g.v.Value()
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}
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func (g OptRegexMatchGroup) ValueOrNil() *string {
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if g.v == nil {
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return nil
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}
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return langext.Ptr(g.v.Value())
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}
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func (g OptRegexMatchGroup) IsEmpty() bool {
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return g.v == nil
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}
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func (g OptRegexMatchGroup) Exists() bool {
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return g.v != nil
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}
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func (g OptRegexMatchGroup) Start() int {
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return g.v.Start()
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}
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func (g OptRegexMatchGroup) End() int {
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return g.v.End()
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}
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func (g OptRegexMatchGroup) Range() (int, int) {
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return g.v.Range()
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}
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func (g OptRegexMatchGroup) Length() int {
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return g.v.Length()
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}
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