Remove github.com/gorilla/mux dependency

The reason for the introduction of this dependency was that it was easy
to setup routes with HTTP method restrictions.

Since Go 1.22 this feature is part of the standard library. Method
restrictions are part of the patterns used to register routes [1].

[1]: https://pkg.go.dev/net/http#hdr-Patterns-ServeMux

1 files changed, 0 insertions, 388 deletions

diff --git a/vendor/github.com/gorilla/mux/regexp.go b/vendor/github.com/gorilla/mux/regexp.go
deleted file mode 100644
index 5d05cfa..0000000
--- a/vendor/github.com/gorilla/mux/regexp.go
+++ /dev/null
@@ -1,388 +0,0 @@
-// Copyright 2012 The Gorilla Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package mux
-
-import (
-	"bytes"
-	"fmt"
-	"net/http"
-	"net/url"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-type routeRegexpOptions struct {
-	strictSlash    bool
-	useEncodedPath bool
-}
-
-type regexpType int
-
-const (
-	regexpTypePath regexpType = iota
-	regexpTypeHost
-	regexpTypePrefix
-	regexpTypeQuery
-)
-
-// newRouteRegexp parses a route template and returns a routeRegexp,
-// used to match a host, a path or a query string.
-//
-// It will extract named variables, assemble a regexp to be matched, create
-// a "reverse" template to build URLs and compile regexps to validate variable
-// values used in URL building.
-//
-// Previously we accepted only Python-like identifiers for variable
-// names ([a-zA-Z_][a-zA-Z0-9_]*), but currently the only restriction is that
-// name and pattern can't be empty, and names can't contain a colon.
-func newRouteRegexp(tpl string, typ regexpType, options routeRegexpOptions) (*routeRegexp, error) {
-	// Check if it is well-formed.
-	idxs, errBraces := braceIndices(tpl)
-	if errBraces != nil {
-		return nil, errBraces
-	}
-	// Backup the original.
-	template := tpl
-	// Now let's parse it.
-	defaultPattern := "[^/]+"
-	if typ == regexpTypeQuery {
-		defaultPattern = ".*"
-	} else if typ == regexpTypeHost {
-		defaultPattern = "[^.]+"
-	}
-	// Only match strict slash if not matching
-	if typ != regexpTypePath {
-		options.strictSlash = false
-	}
-	// Set a flag for strictSlash.
-	endSlash := false
-	if options.strictSlash && strings.HasSuffix(tpl, "/") {
-		tpl = tpl[:len(tpl)-1]
-		endSlash = true
-	}
-	varsN := make([]string, len(idxs)/2)
-	varsR := make([]*regexp.Regexp, len(idxs)/2)
-	pattern := bytes.NewBufferString("")
-	pattern.WriteByte('^')
-	reverse := bytes.NewBufferString("")
-	var end int
-	var err error
-	for i := 0; i < len(idxs); i += 2 {
-		// Set all values we are interested in.
-		raw := tpl[end:idxs[i]]
-		end = idxs[i+1]
-		parts := strings.SplitN(tpl[idxs[i]+1:end-1], ":", 2)
-		name := parts[0]
-		patt := defaultPattern
-		if len(parts) == 2 {
-			patt = parts[1]
-		}
-		// Name or pattern can't be empty.
-		if name == "" || patt == "" {
-			return nil, fmt.Errorf("mux: missing name or pattern in %q",
-				tpl[idxs[i]:end])
-		}
-		// Build the regexp pattern.
-		fmt.Fprintf(pattern, "%s(?P<%s>%s)", regexp.QuoteMeta(raw), varGroupName(i/2), patt)
-
-		// Build the reverse template.
-		fmt.Fprintf(reverse, "%s%%s", raw)
-
-		// Append variable name and compiled pattern.
-		varsN[i/2] = name
-		varsR[i/2], err = regexp.Compile(fmt.Sprintf("^%s$", patt))
-		if err != nil {
-			return nil, err
-		}
-	}
-	// Add the remaining.
-	raw := tpl[end:]
-	pattern.WriteString(regexp.QuoteMeta(raw))
-	if options.strictSlash {
-		pattern.WriteString("[/]?")
-	}
-	if typ == regexpTypeQuery {
-		// Add the default pattern if the query value is empty
-		if queryVal := strings.SplitN(template, "=", 2)[1]; queryVal == "" {
-			pattern.WriteString(defaultPattern)
-		}
-	}
-	if typ != regexpTypePrefix {
-		pattern.WriteByte('$')
-	}
-
-	var wildcardHostPort bool
-	if typ == regexpTypeHost {
-		if !strings.Contains(pattern.String(), ":") {
-			wildcardHostPort = true
-		}
-	}
-	reverse.WriteString(raw)
-	if endSlash {
-		reverse.WriteByte('/')
-	}
-	// Compile full regexp.
-	reg, errCompile := regexp.Compile(pattern.String())
-	if errCompile != nil {
-		return nil, errCompile
-	}
-
-	// Check for capturing groups which used to work in older versions
-	if reg.NumSubexp() != len(idxs)/2 {
-		panic(fmt.Sprintf("route %s contains capture groups in its regexp. ", template) +
-			"Only non-capturing groups are accepted: e.g. (?:pattern) instead of (pattern)")
-	}
-
-	// Done!
-	return &routeRegexp{
-		template:         template,
-		regexpType:       typ,
-		options:          options,
-		regexp:           reg,
-		reverse:          reverse.String(),
-		varsN:            varsN,
-		varsR:            varsR,
-		wildcardHostPort: wildcardHostPort,
-	}, nil
-}
-
-// routeRegexp stores a regexp to match a host or path and information to
-// collect and validate route variables.
-type routeRegexp struct {
-	// The unmodified template.
-	template string
-	// The type of match
-	regexpType regexpType
-	// Options for matching
-	options routeRegexpOptions
-	// Expanded regexp.
-	regexp *regexp.Regexp
-	// Reverse template.
-	reverse string
-	// Variable names.
-	varsN []string
-	// Variable regexps (validators).
-	varsR []*regexp.Regexp
-	// Wildcard host-port (no strict port match in hostname)
-	wildcardHostPort bool
-}
-
-// Match matches the regexp against the URL host or path.
-func (r *routeRegexp) Match(req *http.Request, match *RouteMatch) bool {
-	if r.regexpType == regexpTypeHost {
-		host := getHost(req)
-		if r.wildcardHostPort {
-			// Don't be strict on the port match
-			if i := strings.Index(host, ":"); i != -1 {
-				host = host[:i]
-			}
-		}
-		return r.regexp.MatchString(host)
-	}
-
-	if r.regexpType == regexpTypeQuery {
-		return r.matchQueryString(req)
-	}
-	path := req.URL.Path
-	if r.options.useEncodedPath {
-		path = req.URL.EscapedPath()
-	}
-	return r.regexp.MatchString(path)
-}
-
-// url builds a URL part using the given values.
-func (r *routeRegexp) url(values map[string]string) (string, error) {
-	urlValues := make([]interface{}, len(r.varsN))
-	for k, v := range r.varsN {
-		value, ok := values[v]
-		if !ok {
-			return "", fmt.Errorf("mux: missing route variable %q", v)
-		}
-		if r.regexpType == regexpTypeQuery {
-			value = url.QueryEscape(value)
-		}
-		urlValues[k] = value
-	}
-	rv := fmt.Sprintf(r.reverse, urlValues...)
-	if !r.regexp.MatchString(rv) {
-		// The URL is checked against the full regexp, instead of checking
-		// individual variables. This is faster but to provide a good error
-		// message, we check individual regexps if the URL doesn't match.
-		for k, v := range r.varsN {
-			if !r.varsR[k].MatchString(values[v]) {
-				return "", fmt.Errorf(
-					"mux: variable %q doesn't match, expected %q", values[v],
-					r.varsR[k].String())
-			}
-		}
-	}
-	return rv, nil
-}
-
-// getURLQuery returns a single query parameter from a request URL.
-// For a URL with foo=bar&baz=ding, we return only the relevant key
-// value pair for the routeRegexp.
-func (r *routeRegexp) getURLQuery(req *http.Request) string {
-	if r.regexpType != regexpTypeQuery {
-		return ""
-	}
-	templateKey := strings.SplitN(r.template, "=", 2)[0]
-	val, ok := findFirstQueryKey(req.URL.RawQuery, templateKey)
-	if ok {
-		return templateKey + "=" + val
-	}
-	return ""
-}
-
-// findFirstQueryKey returns the same result as (*url.URL).Query()[key][0].
-// If key was not found, empty string and false is returned.
-func findFirstQueryKey(rawQuery, key string) (value string, ok bool) {
-	query := []byte(rawQuery)
-	for len(query) > 0 {
-		foundKey := query
-		if i := bytes.IndexAny(foundKey, "&;"); i >= 0 {
-			foundKey, query = foundKey[:i], foundKey[i+1:]
-		} else {
-			query = query[:0]
-		}
-		if len(foundKey) == 0 {
-			continue
-		}
-		var value []byte
-		if i := bytes.IndexByte(foundKey, '='); i >= 0 {
-			foundKey, value = foundKey[:i], foundKey[i+1:]
-		}
-		if len(foundKey) < len(key) {
-			// Cannot possibly be key.
-			continue
-		}
-		keyString, err := url.QueryUnescape(string(foundKey))
-		if err != nil {
-			continue
-		}
-		if keyString != key {
-			continue
-		}
-		valueString, err := url.QueryUnescape(string(value))
-		if err != nil {
-			continue
-		}
-		return valueString, true
-	}
-	return "", false
-}
-
-func (r *routeRegexp) matchQueryString(req *http.Request) bool {
-	return r.regexp.MatchString(r.getURLQuery(req))
-}
-
-// braceIndices returns the first level curly brace indices from a string.
-// It returns an error in case of unbalanced braces.
-func braceIndices(s string) ([]int, error) {
-	var level, idx int
-	var idxs []int
-	for i := 0; i < len(s); i++ {
-		switch s[i] {
-		case '{':
-			if level++; level == 1 {
-				idx = i
-			}
-		case '}':
-			if level--; level == 0 {
-				idxs = append(idxs, idx, i+1)
-			} else if level < 0 {
-				return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
-			}
-		}
-	}
-	if level != 0 {
-		return nil, fmt.Errorf("mux: unbalanced braces in %q", s)
-	}
-	return idxs, nil
-}
-
-// varGroupName builds a capturing group name for the indexed variable.
-func varGroupName(idx int) string {
-	return "v" + strconv.Itoa(idx)
-}
-
-// ----------------------------------------------------------------------------
-// routeRegexpGroup
-// ----------------------------------------------------------------------------
-
-// routeRegexpGroup groups the route matchers that carry variables.
-type routeRegexpGroup struct {
-	host    *routeRegexp
-	path    *routeRegexp
-	queries []*routeRegexp
-}
-
-// setMatch extracts the variables from the URL once a route matches.
-func (v routeRegexpGroup) setMatch(req *http.Request, m *RouteMatch, r *Route) {
-	// Store host variables.
-	if v.host != nil {
-		host := getHost(req)
-		if v.host.wildcardHostPort {
-			// Don't be strict on the port match
-			if i := strings.Index(host, ":"); i != -1 {
-				host = host[:i]
-			}
-		}
-		matches := v.host.regexp.FindStringSubmatchIndex(host)
-		if len(matches) > 0 {
-			extractVars(host, matches, v.host.varsN, m.Vars)
-		}
-	}
-	path := req.URL.Path
-	if r.useEncodedPath {
-		path = req.URL.EscapedPath()
-	}
-	// Store path variables.
-	if v.path != nil {
-		matches := v.path.regexp.FindStringSubmatchIndex(path)
-		if len(matches) > 0 {
-			extractVars(path, matches, v.path.varsN, m.Vars)
-			// Check if we should redirect.
-			if v.path.options.strictSlash {
-				p1 := strings.HasSuffix(path, "/")
-				p2 := strings.HasSuffix(v.path.template, "/")
-				if p1 != p2 {
-					u, _ := url.Parse(req.URL.String())
-					if p1 {
-						u.Path = u.Path[:len(u.Path)-1]
-					} else {
-						u.Path += "/"
-					}
-					m.Handler = http.RedirectHandler(u.String(), http.StatusMovedPermanently)
-				}
-			}
-		}
-	}
-	// Store query string variables.
-	for _, q := range v.queries {
-		queryURL := q.getURLQuery(req)
-		matches := q.regexp.FindStringSubmatchIndex(queryURL)
-		if len(matches) > 0 {
-			extractVars(queryURL, matches, q.varsN, m.Vars)
-		}
-	}
-}
-
-// getHost tries its best to return the request host.
-// According to section 14.23 of RFC 2616 the Host header
-// can include the port number if the default value of 80 is not used.
-func getHost(r *http.Request) string {
-	if r.URL.IsAbs() {
-		return r.URL.Host
-	}
-	return r.Host
-}
-
-func extractVars(input string, matches []int, names []string, output map[string]string) {
-	for i, name := range names {
-		output[name] = input[matches[2*i+2]:matches[2*i+3]]
-	}
-}