misc: Move url.go into the misc package

1 files changed, 0 insertions, 154 deletions

diff --git a/url.go b/url.go
deleted file mode 100644
index ad5c8bb..0000000
--- a/url.go
+++ /dev/null
@@ -1,154 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-only
-// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
-
-package main
-
-import (
-	"errors"
-	"net/http"
-	"net/url"
-	"strings"
-)
-
-var (
-	errDupRefSpec = errors.New("duplicate ref spec")
-	errNoRefSpec  = errors.New("no ref spec")
-)
-
-// getParamRefTypeName looks at the query parameters in an HTTP request and
-// returns its ref name and type, if any.
-func getParamRefTypeName(request *http.Request) (retRefType, retRefName string, err error) {
-	rawQuery := request.URL.RawQuery
-	queryValues, err := url.ParseQuery(rawQuery)
-	if err != nil {
-		return
-	}
-	done := false
-	for _, refType := range []string{"commit", "branch", "tag"} {
-		refName, ok := queryValues[refType]
-		if ok {
-			if done {
-				err = errDupRefSpec
-				return
-			}
-			done = true
-			if len(refName) != 1 {
-				err = errDupRefSpec
-				return
-			}
-			retRefName = refName[0]
-			retRefType = refType
-		}
-	}
-	if !done {
-		err = errNoRefSpec
-	}
-	return
-}
-
-// parseReqURI parses an HTTP request URL, and returns a slice of path segments
-// and the query parameters. It handles %2F correctly.
-func parseReqURI(requestURI string) (segments []string, params url.Values, err error) {
-	path, paramsStr, _ := strings.Cut(requestURI, "?")
-
-	segments, err = pathToSegments(path)
-	if err != nil {
-		return
-	}
-
-	params, err = url.ParseQuery(paramsStr)
-	return
-}
-
-func pathToSegments(path string) (segments []string, err error) {
-	segments = strings.Split(strings.TrimPrefix(path, "/"), "/")
-
-	for i, segment := range segments {
-		segments[i], err = url.PathUnescape(segment)
-		if err != nil {
-			return
-		}
-	}
-
-	return
-}
-
-// redirectDir returns true and redirects the user to a version of the URL with
-// a trailing slash, if and only if the request URL does not already have a
-// trailing slash.
-func redirectDir(writer http.ResponseWriter, request *http.Request) bool {
-	requestURI := request.RequestURI
-
-	pathEnd := strings.IndexAny(requestURI, "?#")
-	var path, rest string
-	if pathEnd == -1 {
-		path = requestURI
-	} else {
-		path = requestURI[:pathEnd]
-		rest = requestURI[pathEnd:]
-	}
-
-	if !strings.HasSuffix(path, "/") {
-		http.Redirect(writer, request, path+"/"+rest, http.StatusSeeOther)
-		return true
-	}
-	return false
-}
-
-// redirectNoDir returns true and redirects the user to a version of the URL
-// without a trailing slash, if and only if the request URL has a trailing
-// slash.
-func redirectNoDir(writer http.ResponseWriter, request *http.Request) bool {
-	requestURI := request.RequestURI
-
-	pathEnd := strings.IndexAny(requestURI, "?#")
-	var path, rest string
-	if pathEnd == -1 {
-		path = requestURI
-	} else {
-		path = requestURI[:pathEnd]
-		rest = requestURI[pathEnd:]
-	}
-
-	if strings.HasSuffix(path, "/") {
-		http.Redirect(writer, request, strings.TrimSuffix(path, "/")+rest, http.StatusSeeOther)
-		return true
-	}
-	return false
-}
-
-// redirectUnconditionally unconditionally redirects the user back to the
-// current page while preserving query parameters.
-func redirectUnconditionally(writer http.ResponseWriter, request *http.Request) {
-	requestURI := request.RequestURI
-
-	pathEnd := strings.IndexAny(requestURI, "?#")
-	var path, rest string
-	if pathEnd == -1 {
-		path = requestURI
-	} else {
-		path = requestURI[:pathEnd]
-		rest = requestURI[pathEnd:]
-	}
-
-	http.Redirect(writer, request, path+rest, http.StatusSeeOther)
-}
-
-// segmentsToURL joins URL segments to the path component of a URL.
-// Each segment is escaped properly first.
-func segmentsToURL(segments []string) string {
-	for i, segment := range segments {
-		segments[i] = url.PathEscape(segment)
-	}
-	return strings.Join(segments, "/")
-}
-
-// anyContain returns true if and only if ss contains a string that contains c.
-func anyContain(ss []string, c string) bool {
-	for _, s := range ss {
-		if strings.Contains(s, c) {
-			return true
-		}
-	}
-	return false
-}