Match() uses 'matchString()' and 'matchWildcards()' and now works as expected

internal/uri/parser/private.go

@@ -1,6 +1,7 @@
 package parser
 
 import (
+	"strings"
 	"fmt"
 )
 
@@ -100,4 +101,115 @@ func (s Scheme) optimise() (Scheme, error) {
 
 	return rshift, nil
 
+}
+
+
+// matchString checks the STRING matchers from an URI
+// it returns a boolean : false when not matching, true eitherway
+// it returns a cleared uri, without STRING data
+func (s Scheme) matchString(uri string) (string, bool) {
+
+	/* (1) Initialise variables */
+	clr := uri  // contains cleared input string
+	minOff := 0 // minimum offset
+
+	/* (2) Iterate over strings */
+	for _, m := range s {
+
+
+		ls := len(m.pat)
+
+		// {1} If not STRING matcher -> ignore //
+		if ls == 0 { continue }
+
+		// {2} Get offset in URI (else -1) //
+		off := strings.Index(clr, m.pat)
+		if off < 0 { return "", false }
+
+		// {3} Fail on invalid offset range //
+		if off < minOff { return "", false }
+
+		// {4} Check for trailing '/' //
+		hasSlash := 0
+		if off+ls < len(clr) && clr[off+ls] == '/' {
+			hasSlash = 1
+		}
+
+		// {5} Remove the current string (+trailing slash) from the URI //
+		beg, end := clr[:off], clr[off+ls+hasSlash:]
+		clr = fmt.Sprintf("%s\a/%s", beg, end) // separate matches by '\a' character
+
+		// {6} Update offset range //
+		minOff = len(beg) + 2 - 1 // +2 slash separators
+							      // -1 because strings begin with 1 slash already
+
+	}
+
+	/* (3) If exists, remove trailing '/' */
+	if clr[len(clr)-1] == '/' {
+		clr = clr[:len(clr)-1]
+	}
+
+	/* (4) If exists, remove trailing '\a' */
+	if clr[len(clr)-1] == '\a' {
+		clr = clr[:len(clr)-1]
+	}
+
+	return clr, true
+
+}
+
+
+// matchWildcards check the WILCARDS (non-string) matchers from
+// a cleared URI. it returns if the string matches
+// + it sets the matchers buffers for later extraction
+func (s Scheme) matchWildcards(clear string) bool {
+
+	/* (1) Extract wildcards (ref) */
+	wildcards := make(Scheme, 0, maxMatch)
+
+	for _, m := range s {
+		if len(m.pat) == 0 {
+			m.buf = nil // flush buffers
+			wildcards = append(wildcards, m)
+		}
+	}
+
+	/* (2) If no wildcards -> match */
+	if len(wildcards) == 0 {
+		return true
+	}
+
+	/* (3) Break uri by '\a' characters */
+	matches := strings.Split(clear, "\a")[1:]
+
+	/* (4) Iterate over matches */
+	for n, match := range matches {
+
+		// {1} If no more matcher //
+		if n >= len(wildcards) {
+			return false
+		}
+
+		// {2} Split by '/' //
+		data := strings.Split(match, "/")[1:] // from index 1 because it begins with '/'
+
+		// {3} If required and missing //
+		if wildcards[n].req && len(data) < 1 {
+			return false
+		}
+
+		// {4} If not multi but got multi //
+		if !wildcards[n].mul && len(data) > 1 {
+			return false
+		}
+
+		// {5} Store data into matcher //
+		wildcards[n].buf = data
+
+	}
+
+	/* (5) Match */
+	return true
+
 }

internal/uri/parser/public.go

@@ -47,94 +47,18 @@ func (s Scheme) Match(str string) bool {
 	/* (1) Nothing -> match all */
 	if len(s) == 0 { return true }
 
-	/* (2) Init variables */
+	/* (2) Check for string match */
-	wc := make(Scheme, 0, maxMatch) // conrains wildcards
+	clearURI, match := s.matchString(str)
-	clr := str                     // contains cleared input string
+	if !match {
-	minOff := 0                     // minimum offset
-
-	/* (3) Iterate over strings */
-	for _, m := range s {
-
-		ls := len(m.pat)
-
-		// if not string -> ignore
-		if ls == 0 {
-			wc = append(wc, m)
-			continue
-		}
-
-		// get offset if contained, else -1
-		off := strings.Index(clr, m.pat)
-		if off < 0 { return false }
-
-		// if invalid offset range -> fail
-		if off < minOff { return false }
-
-		// check if trailing '/'
-		slash := 0
-		if off+ls < len(clr) && clr[off+ls] == '/' {
-			slash = 1
-		}
-
-		// exclude this string (+trailing slash if set)
-		// fmt.Printf("remove: '%s'\n", clr[off:off+ls+slash])
-		beg, end := clr[:off], clr[off+ls+slash:]
-		clr = fmt.Sprintf("%s//%s", beg, end)
-		// fmt.Printf("clr: '%s'\n", clr)
-
-		// update offset range
-		minOff = len(beg) + 2 - 1 // +2 slash separators
-							      // -1 because strings begin with 1 slash already
-
-	}
-
-	/* (4) If no wildcard -> match */
-	if len(wc) == 0 {
-		return true
-	}
-
-	// flush wildcard buffers
-	for _, w := range wc { w.buf = nil }
-
-	/* (5) Break the clear string apart */
-	matches := strings.Split(clr, "//")[1:]
-
-	// fail if missing matches
-	if len(matches) < len(wc) {
 		return false
 	}
 
-	nwc := 0
+	/* (3) Check for non-string match (wildcards) */
-	for _, m := range matches {
+	match = s.matchWildcards(clearURI)
-
+	if !match {
-		// ignore empty
+		return false
-		if len(m) == 0 { continue }
-
-		// no matcher for this match
-		if nwc >= len(wc){ return false }
-
-		// split by '/'
-		parts := strings.Split(m, "/")
-
-		// if required and missing -> does not match
-		if wc[nwc].req && len(parts) < 1 {
-			return false
-		}
-
-		// if not multi but multi -> does not match
-		if !wc[nwc].mul && len(parts) > 1 {
-			return false
-		}
-
-		// store into wilcard matcher
-		wc[nwc].buf = parts
-
-		// increment wildcard count
-		nwc++
-
 	}
 
-
 	return true
 }