func (this *AudioMerger) parse(cmd string) (format string, mime string, bucket string, url string, duration string, err error) {
pattern := "^amerge/format/[a-zA-Z0-9]+/mime/[0-9a-zA-Z-_=]+/bucket/[0-9a-zA-Z-_=]+/url/[0-9a-zA-Z-_=]+(/duration/(first|shortest|longest)){0,1}$"
matched, _ := regexp.MatchString(pattern, cmd)
if !matched {
err = errors.New("invalid amerge command format")
return
}
var decodeErr error
format = utils.GetParam(cmd, "format/[a-zA-Z0-9]+", "format")
mime, decodeErr = utils.GetParamDecoded(cmd, "mime/[0-9a-zA-Z-_=]+", "mime")
if decodeErr != nil {
err = errors.New("invalid amerge parameter 'mime'")
return
}
bucket, decodeErr = utils.GetParamDecoded(cmd, "bucket/[0-9a-zA-Z-_=]+", "bucket")
if decodeErr != nil {
err = errors.New("invalid amerge parameter 'bucket'")
return
}
url, decodeErr = utils.GetParamDecoded(cmd, "url/[0-9a-zA-Z-_=]+", "url")
if decodeErr != nil {
err = errors.New("invalid amerge parameter 'url'")
return
}
duration = utils.GetParam(cmd, "duration/(first|shortest|longest)", "duration")
if duration == "" {
duration = "longest"
}
return
}
/*
unzip/bucket/<encoded bucket>/prefix/<encoded prefix>/overwrite/<[0|1]>
*/
func (this *Unzipper) parse(cmd string) (bucket string, prefix string, overwrite bool, err error) {
pattern := "^unzip/bucket/[0-9a-zA-Z-_=]+(/prefix/[0-9a-zA-Z-_=]+){0,1}(/overwrite/(0|1)){0,1}$"
matched, _ := regexp.MatchString(pattern, cmd)
if !matched {
err = errors.New("invalid unzip command format")
return
}
var decodeErr error
bucket, decodeErr = utils.GetParamDecoded(cmd, "bucket/[0-9a-zA-Z-_=]+", "bucket")
if decodeErr != nil {
err = errors.New("invalid unzip parameter 'bucket'")
return
}
prefix, decodeErr = utils.GetParamDecoded(cmd, "prefix/[0-9a-zA-Z-_=]+", "prefix")
if decodeErr != nil {
err = errors.New("invalid unzip parameter 'prefix'")
return
}
overwriteStr := utils.GetParam(cmd, "overwrite/(0|1)", "overwrite")
if overwriteStr != "" {
overwriteVal, paramErr := strconv.ParseInt(overwriteStr, 10, 64)
if paramErr != nil {
err = errors.New("invalid unzip parameter 'overwrite'")
return
}
if overwriteVal == 1 {
overwrite = true
}
}
return
}
func (this *RoundPicer) parse(cmd string) (params RoundPicParams, err error) {
pattern := `^roundpic((/radius/\d+(\.\d+){0,1}%{0,1})|(/radius-x/\d+(\.\d+){0,1}%{0,1}/radius-y/\d+(\.\d+){0,1}%{0,1}))$`
if matched, _ := regexp.MatchString(pattern, cmd); !matched {
err = errors.New("invalid roundpic command")
return
}
params = RoundPicParams{}
//get radius if specified
params.Radius = utils.GetParam(cmd, `radius/\d+(\.\d+){0,1}%{0,1}`, "radius")
//get radius-x, radius-y
params.RadiusX = utils.GetParam(cmd, `radius-x/\d+(\.\d+){0,1}%{0,1}`, "radius-x")
params.RadiusY = utils.GetParam(cmd, `radius-y/\d+(\.\d+){0,1}%{0,1}`, "radius-y")
if params.Radius == "" && (params.RadiusX == "" || params.RadiusY == "") {
err = errors.New("roundpic radius or radius-x or radius-y empty error")
return
}
return
}
func (this *Html2Imager) parse(cmd string) (url string, options *Html2ImageOptions, err error) {
pattern := `^html2image/url/[0-9a-zA-Z-_=]+(/croph/\d+|/cropw/\d+|/cropx/\d+|/cropy/\d+|/format/(png|jpg|jpeg)|/height/\d+|/quality/\d+|/width/\d+|/force/[0|1]){0,9}$`
matched, _ := regexp.MatchString(pattern, cmd)
if !matched {
err = errors.New("invalid html2image command format")
return
}
options = &Html2ImageOptions{
Format: "jpg",
}
//url
var decodeErr error
url, decodeErr = utils.GetParamDecoded(cmd, `url/[0-9a-zA-Z-_=]+`, "url")
if decodeErr != nil {
err = errors.New("invalid html2image parameter 'url'")
return
}
//croph
cropHStr := utils.GetParam(cmd, `croph/\d+`, "croph")
if cropHStr != "" {
cropH, _ := strconv.Atoi(cropHStr)
if cropH <= 0 {
err = errors.New("invalid html2image parameter 'croph'")
return
} else {
options.CropH = cropH
}
}
//cropw
cropWStr := utils.GetParam(cmd, `cropw/\d+`, "cropw")
if cropWStr != "" {
cropW, _ := strconv.Atoi(cropWStr)
if cropW <= 0 {
err = errors.New("invalid html2image parameter 'cropw'")
return
} else {
options.CropW = cropW
}
}
//cropx
cropXStr := utils.GetParam(cmd, `cropx/\d+`, "cropx")
fmt.Println(cropXStr)
if cropXStr != "" {
cropX, _ := strconv.Atoi(cropXStr)
if cropX <= 0 {
err = errors.New("invalid html2image parameter 'cropx'")
return
} else {
options.CropX = cropX
}
}
//cropy
cropYStr := utils.GetParam(cmd, `cropy/\d+`, "cropy")
if cropYStr != "" {
cropY, _ := strconv.Atoi(cropYStr)
if cropY <= 0 {
err = errors.New("invalid html2image parameter 'cropy'")
return
} else {
options.CropY = cropY
}
}
//format
formatStr := utils.GetParam(cmd, "format/(png|jpg|jpeg)", "format")
if formatStr != "" {
options.Format = formatStr
}
//height
heightStr := utils.GetParam(cmd, `height/\d+`, "height")
if heightStr != "" {
height, _ := strconv.Atoi(heightStr)
if height <= 0 {
err = errors.New("invalid html2image parameter 'height'")
return
} else {
options.Height = height
}
}
//width
widthStr := utils.GetParam(cmd, `width/\d+`, "width")
if widthStr != "" {
width, _ := strconv.Atoi(widthStr)
if width <= 0 {
err = errors.New("invalid html2image parameter 'width'")
return
} else {
options.Width = width
}
}
//quality
qualityStr := utils.GetParam(cmd, `quality/\d+`, "quality")
if qualityStr != "" {
quality, _ := strconv.Atoi(qualityStr)
if quality > 100 || quality <= 0 {
err = errors.New("invalid html2image parameter 'quality'")
return
} else {
options.Quality = quality
}
}
//force
forceStr := utils.GetParam(cmd, "force/[0|1]", "force")
if forceStr != "" {
force, _ := strconv.Atoi(forceStr)
if force == 1 {
options.Force = true
}
}
return
}
func (this *Html2Pdfer) parse(cmd string) (options *Html2PdfOptions, err error) {
pattern := `^html2pdf(/gray/[0|1]|/low/[0|1]|/orient/(Portrait|Landscape)|/size/[A-B][0-8]|/title/[0-9a-zA-Z-_=]+|/collate/[0|1]|/copies/\d+){0,7}$`
matched, _ := regexp.MatchString(pattern, cmd)
if !matched {
err = errors.New("invalid html2pdf command format")
return
}
var decodeErr error
//get optional parameters
options = &Html2PdfOptions{
Collate: true,
Copies: 1,
}
//get gray
grayStr := utils.GetParam(cmd, "gray/[0|1]", "gray")
if grayStr != "" {
grayInt, _ := strconv.Atoi(grayStr)
if grayInt == 1 {
options.Gray = true
}
}
//get low quality
lowStr := utils.GetParam(cmd, "low/[0|1]", "low")
if lowStr != "" {
lowInt, _ := strconv.Atoi(lowStr)
if lowInt == 1 {
options.LowQuality = true
}
}
//orient
options.Orientation = utils.GetParam(cmd, "orient/(Portrait|Landscape)", "orient")
//size
options.Size = utils.GetParam(cmd, "size/[A-B][0-8]", "size")
//title
title, decodeErr := utils.GetParamDecoded(cmd, "title/[0-9a-zA-Z-_=]+", "title")
if decodeErr != nil {
err = errors.New("invalid html2pdf parameter 'title'")
return
}
options.Title = title
//collate
collateStr := utils.GetParam(cmd, "collate/[0|1]", "collate")
if collateStr != "" {
collateInt, _ := strconv.Atoi(collateStr)
if collateInt == 0 {
options.Collate = false
}
}
//copies
copiesStr := utils.GetParam(cmd, `copies/\d+`, "copies")
if copiesStr != "" {
copiesInt, _ := strconv.Atoi(copiesStr)
if copiesInt <= 0 {
err = errors.New("invalid html2pdf parameter 'copies'")
return
} else {
options.Copies = copiesInt
}
}
return
}
/*
imagecomp
/bucket/<string>
/format/<string> optional, default jpg
/rows/<int> optional, default 1
/cols/<int> optional, default 1
/halign/<string> optional, default left
/valign/<string> optional, default top
/order/<int> optional, default 1
/alpha/<int> optional, default 0
/bgcolor/<string> optional, default gray
/margin/<int> optional, default 0
/url/<string>
/url/<string>
*/
func (this *ImageComposer) parse(cmd string) (bucket, format, halign, valign string,
rows, cols, order int, bgColor color.Color, margin int, urls []map[string]string, err error) {
pattern := `^imagecomp/bucket/[0-9a-zA-Z-_=]+(/format/(png|jpg|jpeg)|/halign/(left|right|center)|/valign/(top|bottom|middle)|/rows/\d+|/cols/\d+|/order/(0|1)|/alpha/\d+|/margin/\d+|/bgcolor/[0-9a-zA-Z-_=]+){0,9}(/url/[0-9a-zA-Z-_=]+)+$`
matched, _ := regexp.MatchString(pattern, cmd)
if !matched {
err = errors.New("invalid imagecomp command format")
return
}
var decodeErr error
//bucket
bucket, decodeErr = utils.GetParamDecoded(cmd, "bucket/[0-9a-zA-Z-_=]+", "bucket")
if decodeErr != nil {
err = errors.New("invalid imagecomp parameter 'bucket'")
return
}
//format
format = "jpg"
if v := utils.GetParam(cmd, "format/(png|jpg|jpeg)", "format"); v != "" {
format = v
}
//check later by url count
//rows
rows = 0
if rowsStr := utils.GetParam(cmd, `rows/\d+`, "rows"); rowsStr != "" {
rows, _ = strconv.Atoi(rowsStr)
}
//cols
cols = 0
if colsStr := utils.GetParam(cmd, `cols/\d+`, "cols"); colsStr != "" {
cols, _ = strconv.Atoi(colsStr)
}
//halign
halign = H_ALIGN_LEFT
if v := utils.GetParam(cmd, "halign/(left|right|center)", "halign"); v != "" {
halign = v
}
//valign
valign = V_ALIGN_TOP
if v := utils.GetParam(cmd, "valign/(top|bottom|middle)", "valign"); v != "" {
valign = v
}
//order
order = IMAGECOMP_ORDER_BY_COL
if orderStr := utils.GetParam(cmd, "order/(0|1)", "order"); orderStr != "" {
order, _ = strconv.Atoi(orderStr)
}
//alpha
alpha := 255
if format == "png" {
alpha = 0
}
if alphaStr := utils.GetParam(cmd, `alpha/\d+`, "alpha"); alphaStr != "" {
alpha, _ = strconv.Atoi(alphaStr)
}
if alpha < 0 || alpha > 255 {
err = errors.New("invalid imagecomp parameter 'alhpa', should between [0,255]")
return
}
//bgcolor, default white
bgColor = color.RGBA{0xFF, 0xFF, 0xFF, uint8(alpha)}
var bgColorStr string
bgColorStr, decodeErr = utils.GetParamDecoded(cmd, "bgcolor/[0-9a-zA-Z-_=]+", "bgcolor")
if decodeErr != nil {
err = errors.New("invalid imagecomp parameter 'bgcolor'")
return
} else {
if bgColorStr != "" {
colorPattern := `^#[a-fA-F0-9]{6}$`
if matched, _ := regexp.Match(colorPattern, []byte(bgColorStr)); !matched {
err = errors.New("invalid imagecomp parameter 'bgcolor', should in format '#FFFFFF'")
return
}
bgColorStr = bgColorStr[1:]
redPart := bgColorStr[0:2]
greenPart := bgColorStr[2:4]
bluePart := bgColorStr[4:6]
redInt, _ := strconv.ParseInt(redPart, 16, 64)
greenInt, _ := strconv.ParseInt(greenPart, 16, 64)
blueInt, _ := strconv.ParseInt(bluePart, 16, 64)
bgColor = color.RGBA{
uint8(redInt),
uint8(greenInt),
uint8(blueInt),
uint8(alpha),
}
}
}
//margin
margin = 0
if marginStr := utils.GetParam(cmd, `margin/\d+`, "margin"); marginStr != "" {
margin, _ = strconv.Atoi(marginStr)
}
//urls
urls = make([]map[string]string, 0)
urlsPattern := regexp.MustCompile("url/[0-9a-zA-Z-_=]+")
urlStrings := urlsPattern.FindAllString(cmd, -1)
for _, urlString := range urlStrings {
urlBytes, _ := base64.URLEncoding.DecodeString(urlString[4:])
urlStr := string(urlBytes)
uri, pErr := url.Parse(urlStr)
if pErr != nil {
err = errors.New(fmt.Sprintf("invalid imagecomp parameter 'url', wrong '%s'", urlStr))
return
}
urls = append(urls, map[string]string{
"path": uri.Path[1:],
"url": urlStr,
})
}
//check rows and cols valid or not
urlCount := len(urls)
if urlCount > IMAGECOMP_MAX_URL_COUNT {
err = errors.New(fmt.Sprintf("only allow url count not larger than %d", IMAGECOMP_MAX_URL_COUNT))
return
}
if rows == 0 && cols == 0 {
cols = 1
rows = urlCount / cols
} else if rows == 0 && cols != 0 {
if cols > urlCount {
err = errors.New("cols larger than url count error")
return
}
if urlCount%cols == 0 {
rows = urlCount / cols
} else {
rows = urlCount/cols + 1
}
} else if rows != 0 && cols == 0 {
if rows > urlCount {
err = errors.New("rows larger than url count error")
return
}
if urlCount%rows == 0 {
cols = urlCount / rows
} else {
cols = urlCount/rows + 1
}
} else {
if urlCount > rows*cols {
err = errors.New("url count larger than rows*cols error")
return
}
if urlCount < rows*cols {
switch order {
case IMAGECOMP_ORDER_BY_ROW:
if urlCount < (rows-1)*cols+1 {
err = errors.New("url count less than (rows-1)*cols+1 error")
return
}
case IMAGECOMP_ORDER_BY_COL:
if urlCount < rows*(cols-1)+1 {
err = errors.New("url count less than rows*(cols-1)+1 error")
return
}
}
}
}
return
}