358 lines
11 KiB
Go
358 lines
11 KiB
Go
package common
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"crypto/sha256"
|
|
"encoding/hex"
|
|
"errors"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"mime"
|
|
"net/http"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
|
|
tmpl "github.com/Azareal/Gosora/tmpl_client"
|
|
)
|
|
|
|
type SFileList map[string]SFile
|
|
|
|
var StaticFiles SFileList = make(map[string]SFile)
|
|
var staticFileMutex sync.RWMutex
|
|
|
|
type SFile struct {
|
|
Data []byte
|
|
GzipData []byte
|
|
Sha256 string
|
|
OName string
|
|
Pos int64
|
|
Length int64
|
|
GzipLength int64
|
|
StrGzipLength string
|
|
Mimetype string
|
|
Info os.FileInfo
|
|
FormattedModTime string
|
|
}
|
|
|
|
type CSSData struct {
|
|
Phrases map[string]string
|
|
}
|
|
|
|
func (list SFileList) JSTmplInit() error {
|
|
DebugLog("Initialising the client side templates")
|
|
return filepath.Walk("./tmpl_client", func(path string, f os.FileInfo, err error) error {
|
|
if f.IsDir() || strings.HasSuffix(path, "template_list.go") || strings.HasSuffix(path, "stub.go") {
|
|
return nil
|
|
}
|
|
path = strings.Replace(path, "\\", "/", -1)
|
|
DebugLog("Processing client template " + path)
|
|
data, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
path = strings.TrimPrefix(path, "tmpl_client/")
|
|
tmplName := strings.TrimSuffix(path, ".jgo")
|
|
shortName := strings.TrimPrefix(tmplName, "template_")
|
|
|
|
replace := func(data []byte, replaceThis, withThis string) []byte {
|
|
return bytes.Replace(data, []byte(replaceThis), []byte(withThis), -1)
|
|
}
|
|
|
|
startIndex, hasFunc := skipAllUntilCharsExist(data, 0, []byte("if(tmplInits===undefined)"))
|
|
if !hasFunc {
|
|
return errors.New("no init map found")
|
|
}
|
|
data = data[startIndex-len([]byte("if(tmplInits===undefined)")):]
|
|
data = replace(data, "// nolint", "")
|
|
data = replace(data, "func ", "function ")
|
|
data = replace(data, " error {\n", " {\nlet o = \"\"\n")
|
|
funcIndex, hasFunc := skipAllUntilCharsExist(data, 0, []byte("function Template_"))
|
|
if !hasFunc {
|
|
return errors.New("no template function found")
|
|
}
|
|
spaceIndex, hasSpace := skipUntilIfExists(data, funcIndex, ' ')
|
|
if !hasSpace {
|
|
return errors.New("no spaces found after the template function name")
|
|
}
|
|
endBrace, hasBrace := skipUntilIfExists(data, spaceIndex, ')')
|
|
if !hasBrace {
|
|
return errors.New("no right brace found after the template function name")
|
|
}
|
|
fmt.Println("spaceIndex: ", spaceIndex)
|
|
fmt.Println("endBrace: ", endBrace)
|
|
fmt.Println("string(data[spaceIndex:endBrace]): ", string(data[spaceIndex:endBrace]))
|
|
|
|
preLen := len(data)
|
|
data = replace(data, string(data[spaceIndex:endBrace]), "")
|
|
data = replace(data, "))\n", " \n")
|
|
endBrace -= preLen - len(data) // Offset it as we've deleted portions
|
|
fmt.Println("new endBrace: ", endBrace)
|
|
fmt.Println("data: ", string(data))
|
|
|
|
/*showPos := func(data []byte, index int) (out string) {
|
|
out = "["
|
|
for j, char := range data {
|
|
if index == j {
|
|
out += "[" + string(char) + "] "
|
|
} else {
|
|
out += string(char) + " "
|
|
}
|
|
}
|
|
return out + "]"
|
|
}*/
|
|
|
|
// ? Can we just use a regex? I'm thinking of going more efficient, or just outright rolling wasm, this is a temp hack in a place where performance doesn't particularly matter
|
|
each := func(phrase string, h func(index int)) {
|
|
//fmt.Println("find each '" + phrase + "'")
|
|
index := endBrace
|
|
if index < 0 {
|
|
panic("index under zero: " + strconv.Itoa(index))
|
|
}
|
|
var foundIt bool
|
|
for {
|
|
//fmt.Println("in index: ", index)
|
|
//fmt.Println("pos: ", showPos(data, index))
|
|
index, foundIt = skipAllUntilCharsExist(data, index, []byte(phrase))
|
|
if !foundIt {
|
|
break
|
|
}
|
|
h(index)
|
|
}
|
|
}
|
|
each("strconv.Itoa(", func(index int) {
|
|
braceAt, hasEndBrace := skipUntilIfExistsOrLine(data, index, ')')
|
|
if hasEndBrace {
|
|
data[braceAt] = ' ' // Blank it
|
|
}
|
|
})
|
|
each("[]byte(", func(index int) {
|
|
braceAt, hasEndBrace := skipUntilIfExistsOrLine(data, index, ')')
|
|
if hasEndBrace {
|
|
data[braceAt] = ' ' // Blank it
|
|
}
|
|
})
|
|
each("StringToBytes(", func(index int) {
|
|
braceAt, hasEndBrace := skipUntilIfExistsOrLine(data, index, ')')
|
|
if hasEndBrace {
|
|
data[braceAt] = ' ' // Blank it
|
|
}
|
|
})
|
|
each("w.Write(", func(index int) {
|
|
braceAt, hasEndBrace := skipUntilIfExistsOrLine(data, index, ')')
|
|
if hasEndBrace {
|
|
data[braceAt] = ' ' // Blank it
|
|
}
|
|
})
|
|
each("RelativeTime(", func(index int) {
|
|
braceAt, _ := skipUntilIfExistsOrLine(data, index, 10)
|
|
if data[braceAt-1] == ' ' {
|
|
data[braceAt-1] = ' ' // Blank it
|
|
}
|
|
})
|
|
each("if ", func(index int) {
|
|
//fmt.Println("if index: ", index)
|
|
braceAt, hasBrace := skipUntilIfExistsOrLine(data, index, '{')
|
|
if hasBrace {
|
|
if data[braceAt-1] != ' ' {
|
|
panic("couldn't find space before brace, found ' " + string(data[braceAt-1]) + "' instead")
|
|
}
|
|
data[braceAt-1] = ')' // Drop a brace here to satisfy JS
|
|
}
|
|
})
|
|
each("for _, item := range ", func(index int) {
|
|
//fmt.Println("for index: ", index)
|
|
braceAt, hasBrace := skipUntilIfExists(data, index, '{')
|
|
if hasBrace {
|
|
if data[braceAt-1] != ' ' {
|
|
panic("couldn't find space before brace, found ' " + string(data[braceAt-1]) + "' instead")
|
|
}
|
|
data[braceAt-1] = ')' // Drop a brace here to satisfy JS
|
|
}
|
|
})
|
|
data = replace(data, "for _, item := range ", "for(item of ")
|
|
data = replace(data, "w.Write([]byte(", "o += ")
|
|
data = replace(data, "w.Write(StringToBytes(", "o += ")
|
|
data = replace(data, "w.Write(", "o += ")
|
|
data = replace(data, "+= c.", "+= ")
|
|
data = replace(data, "strconv.Itoa(", "")
|
|
data = replace(data, "strconv.FormatInt(", "")
|
|
data = replace(data, " c.", "")
|
|
data = replace(data, "phrases.", "")
|
|
data = replace(data, ", 10;", "")
|
|
data = replace(data, "var plist = GetTmplPhrasesBytes("+shortName+"_tmpl_phrase_id)", "const plist = tmplPhrases[\""+tmplName+"\"];")
|
|
data = replace(data, "var cached_var_", "let cached_var_")
|
|
data = replace(data, `tmpl_vars, ok := tmpl_i.`, `/*`)
|
|
data = replace(data, "[]byte(", "")
|
|
data = replace(data, "StringToBytes(", "")
|
|
data = replace(data, "RelativeTime(tmpl_"+shortName+"_vars.", "tmpl_"+shortName+"_vars.Relative")
|
|
// TODO: Format dates properly on the client side
|
|
data = replace(data, ".Format(\"2006-01-02 15:04:05\"", "")
|
|
data = replace(data, ", 10", "")
|
|
data = replace(data, "if ", "if(")
|
|
data = replace(data, "return nil", "return o")
|
|
data = replace(data, " )", ")")
|
|
data = replace(data, " \n", "\n")
|
|
data = replace(data, "\n", ";\n")
|
|
data = replace(data, "{;", "{")
|
|
data = replace(data, "};", "}")
|
|
data = replace(data, "[;", "[")
|
|
data = replace(data, ";;", ";")
|
|
data = replace(data, ",;", ",")
|
|
data = replace(data, "=;", "=")
|
|
data = replace(data, `,
|
|
});
|
|
}`, "\n\t];")
|
|
data = replace(data, `=
|
|
}`, "=[]")
|
|
|
|
fragset := tmpl.GetFrag(shortName)
|
|
if fragset != nil {
|
|
sfrags := []byte("let " + shortName + "_frags = [\n")
|
|
for _, frags := range fragset {
|
|
//sfrags = append(sfrags, []byte(shortName+"_frags.push(`"+string(frags)+"`);\n")...)
|
|
sfrags = append(sfrags, []byte("`"+string(frags)+"`,\n")...)
|
|
}
|
|
sfrags = append(sfrags, []byte("];\n")...)
|
|
data = append(sfrags, data...)
|
|
}
|
|
data = replace(data, "\n;", "\n")
|
|
|
|
for name, _ := range Themes {
|
|
if strings.HasSuffix(shortName, "_"+name) {
|
|
data = append(data, "\nvar Template_"+strings.TrimSuffix(shortName, "_"+name)+" = Template_"+shortName+";"...)
|
|
break
|
|
}
|
|
}
|
|
|
|
path = tmplName + ".js"
|
|
DebugLog("js path: ", path)
|
|
ext := filepath.Ext("/tmpl_client/" + path)
|
|
gzipData, err := CompressBytesGzip(data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Get a checksum for CSPs and cache busting
|
|
hasher := sha256.New()
|
|
hasher.Write(data)
|
|
checksum := hex.EncodeToString(hasher.Sum(nil))
|
|
|
|
list.Set("/s/"+path, SFile{data, gzipData, checksum, path + "?h=" + checksum, 0, int64(len(data)), int64(len(gzipData)), strconv.Itoa(len(gzipData)), mime.TypeByExtension(ext), f, f.ModTime().UTC().Format(http.TimeFormat)})
|
|
|
|
DebugLogf("Added the '%s' static file.", path)
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (list SFileList) Init() error {
|
|
return filepath.Walk("./public", func(path string, f os.FileInfo, err error) error {
|
|
if f.IsDir() {
|
|
return nil
|
|
}
|
|
|
|
path = strings.Replace(path, "\\", "/", -1)
|
|
data, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
path = strings.TrimPrefix(path, "public/")
|
|
var ext = filepath.Ext("/public/" + path)
|
|
mimetype := mime.TypeByExtension(ext)
|
|
|
|
// Get a checksum for CSPs and cache busting
|
|
hasher := sha256.New()
|
|
hasher.Write(data)
|
|
checksum := hex.EncodeToString(hasher.Sum(nil))
|
|
|
|
// Avoid double-compressing images
|
|
var gzipData []byte
|
|
if mimetype != "image/jpeg" && mimetype != "image/png" && mimetype != "image/gif" {
|
|
gzipData, err = CompressBytesGzip(data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Don't use Gzip if we get meagre gains from it as it takes longer to process the responses
|
|
if len(gzipData) >= (len(data) + 100) {
|
|
gzipData = nil
|
|
} else {
|
|
diff := len(data) - len(gzipData)
|
|
if diff <= len(data)/100 {
|
|
gzipData = nil
|
|
}
|
|
}
|
|
}
|
|
|
|
list.Set("/s/"+path, SFile{data, gzipData, checksum, path + "?h=" + checksum, 0, int64(len(data)), int64(len(gzipData)), strconv.Itoa(len(gzipData)), mimetype, f, f.ModTime().UTC().Format(http.TimeFormat)})
|
|
|
|
DebugLogf("Added the '%s' static file.", path)
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (list SFileList) Add(path, prefix string) error {
|
|
data, err := ioutil.ReadFile(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fi, err := os.Open(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
f, err := fi.Stat()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ext := filepath.Ext(path)
|
|
path = strings.TrimPrefix(path, prefix)
|
|
gzipData, err := CompressBytesGzip(data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Get a checksum for CSPs and cache busting
|
|
hasher := sha256.New()
|
|
hasher.Write(data)
|
|
checksum := hex.EncodeToString(hasher.Sum(nil))
|
|
|
|
list.Set("/s"+path, SFile{data, gzipData, checksum, path + "?h=" + checksum, 0, int64(len(data)), int64(len(gzipData)), strconv.Itoa(len(gzipData)), mime.TypeByExtension(ext), f, f.ModTime().UTC().Format(http.TimeFormat)})
|
|
|
|
DebugLogf("Added the '%s' static file", path)
|
|
return nil
|
|
}
|
|
|
|
func (list SFileList) Get(name string) (file SFile, exists bool) {
|
|
staticFileMutex.RLock()
|
|
defer staticFileMutex.RUnlock()
|
|
file, exists = list[name]
|
|
return file, exists
|
|
}
|
|
|
|
func (list SFileList) Set(name string, data SFile) {
|
|
staticFileMutex.Lock()
|
|
defer staticFileMutex.Unlock()
|
|
list[name] = data
|
|
}
|
|
|
|
func CompressBytesGzip(in []byte) ([]byte, error) {
|
|
var buff bytes.Buffer
|
|
gz, err := gzip.NewWriterLevel(&buff, gzip.BestCompression)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
_, err = gz.Write(in)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = gz.Close()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return buff.Bytes(), nil
|
|
}
|