diff --git a/README.md b/README.md index 0a800b7..cb9853a 100644 --- a/README.md +++ b/README.md @@ -39,7 +39,7 @@ All examples use the qrcode.Medium error Recovery Level and create a fixed 256x2 ## Demoapp -[http://go-qrcode.appspot.com](http://go-qrcode.appspot.com) +[http://cuong.net](http://cuong.net:6868/api/qrcode?data=abc&size=800&color=00FF00&bgcolor=FF00FF&ecc=L&format=png) ## CLI @@ -70,6 +70,28 @@ Usage: qrcode "homepage: https://github.com/skip2/go-qrcode" > out.png ``` + +## REST-API + +### Build and Start + +``` +go build ./qrcode-restapi/main.go +./main +``` + +### Usage +``` +wget "http://localhost:6868/api/qrcode?data=abc&size=800&color=00FF00&bgcolor=FF00FF&ecc=L&format=png" +``` + +### Parameters +- data as string +- size in pixel +- color and bgcolor as hex +- ecc aka recovery level can be set as L, M, Q or H for Low, Medium, Quality or Highest +- format supported are png or svg + ## Maximum capacity The maximum capacity of a QR Code varies according to the content encoded and the error recovery level. The maximum capacity is 2,953 bytes, 4,296 alphanumeric characters, 7,089 numeric digits, or a combination of these. diff --git a/encoder.go b/encoder.go index 6a809cf..a527214 100644 --- a/encoder.go +++ b/encoder.go @@ -7,7 +7,7 @@ import ( "errors" "log" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) // Data encoding. @@ -406,10 +406,10 @@ func (d *dataEncoder) charCountBits(dataMode dataMode) int { // dataMode. // // The number of bits required is affected by: -// - QR code type - Mode Indicator length. -// - Data mode - number of bits used to represent data length. -// - Data mode - how the data is encoded. -// - Number of symbols encoded. +// - QR code type - Mode Indicator length. +// - Data mode - number of bits used to represent data length. +// - Data mode - how the data is encoded. +// - Number of symbols encoded. // // An error is returned if the mode is not supported, or the length requested is // too long to be represented. diff --git a/encoder_test.go b/encoder_test.go index 3ae48c9..62866a6 100644 --- a/encoder_test.go +++ b/encoder_test.go @@ -8,7 +8,7 @@ import ( "reflect" "testing" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) func TestClassifyDataMode(t *testing.T) { diff --git a/go.mod b/go.mod index a915813..d7e835f 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,11 @@ -module github.com/skip2/go-qrcode +module github.com/uncopied/go-qrcode go 1.13 + +require ( + github.com/gin-gonic/gin v1.9.1 + github.com/sirupsen/logrus v1.9.3 + github.com/tdewolff/canvas v0.0.0-20210423005539-2093b39b633b + gonum.org/v1/netlib v0.0.0-20200824093956-f0ca4b3a5ef5 // indirect + +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..20c0535 --- /dev/null +++ b/go.sum @@ -0,0 +1,249 @@ +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +gioui.org v0.0.0-20210308172011-57750fc8a0a6/go.mod 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v0.9.0/go.mod h1:3Pcqqmp6RHvJI72kgb8fThyUnav364FOsdDo2aGW5lY= +google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= +google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng= +google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +modernc.org/cc v1.0.0/go.mod h1:1Sk4//wdnYJiUIxnW8ddKpaOJCF37yAdqYnkxUpaYxw= +modernc.org/golex v1.0.0/go.mod h1:b/QX9oBD/LhixY6NDh+IdGv17hgB+51fET1i2kPSmvk= +modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k= +modernc.org/strutil v1.1.0/go.mod h1:lstksw84oURvj9y3tn8lGvRxyRC1S2+g5uuIzNfIOBs= +modernc.org/xc v1.0.0/go.mod h1:mRNCo0bvLjGhHO9WsyuKVU4q0ceiDDDoEeWDJHrNx8I= +rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4= diff --git a/qrcode-restapi/main.go b/qrcode-restapi/main.go new file mode 100644 index 0000000..52a7e4a --- /dev/null +++ b/qrcode-restapi/main.go @@ -0,0 +1,176 @@ +package main + +import ( + "bytes" + "fmt" + "image/color" + "io" + "net/http" + "os" + "strconv" + "strings" + "time" + + log "github.com/sirupsen/logrus" + + "github.com/gin-gonic/gin" + qrcode "github.com/uncopied/go-qrcode" +) + +func init() { + initLog() +} + +func initLog() { + // setup logrus + logLevel, err := log.ParseLevel(os.Getenv("LOG_LEVEL")) + if err != nil { + logLevel = log.InfoLevel + } + + log.SetLevel(logLevel) +} + +func LoggingMiddleware() gin.HandlerFunc { + return func(ctx *gin.Context) { + // Starting time + startTime := time.Now() + + // Processing request + // ctx.Next() // bug? + + // End Time + endTime := time.Now() + + // execution time + latencyTime := endTime.Sub(startTime) + + // Request method + reqMethod := ctx.Request.Method + + // Request route + reqUri := ctx.Request.RequestURI + + // status code + statusCode := ctx.Writer.Status() + + // Request IP + clientIP := ctx.ClientIP() + + reqBody, _ := io.ReadAll(ctx.Request.Body) + ctx.Request.Body = io.NopCloser(bytes.NewReader(reqBody)) + + log.WithFields(log.Fields{ + "6_BODY": string(reqBody), + "5_METHOD": reqMethod, + "2_URI": reqUri, + "3_STATUS": statusCode, + "4_LATENCY": latencyTime, + "1_CLIENT_IP": clientIP, + }).Info("HTTP REQUEST") + + ctx.Next() + } +} + +// https://stackoverflow.com/questions/54197913/parse-hex-string-to-image-color +func ParseHexColor(s string) (c color.RGBA, err error) { + c.A = 0xff + switch len(s) { + case 6: + _, err = fmt.Sscanf(s, "%02x%02x%02x", &c.R, &c.G, &c.B) + case 3: + _, err = fmt.Sscanf(s, "%1x%1x%1x", &c.R, &c.G, &c.B) + // Double the hex digits: + c.R *= 17 + c.G *= 17 + c.B *= 17 + default: + err = fmt.Errorf("invalid length, must be 7 or 4") + } + return +} + +func getQRCode(c *gin.Context) { + + var data string = c.Query("data") + size, _ := strconv.Atoi(c.Query("size")) + var ecc string = strings.ToUpper(c.Query("ecc")) + var recovery_level qrcode.RecoveryLevel = qrcode.Low + // margin, _ := strconv.Atoi(c.Query("margin")), no margin is supported yet in go-qrcode + var color string = c.Query("color") + var bgcolor string = c.Query("bgcolor") + // qzone, no qzone is supported yet in go-qrcode + var format string = strings.ToLower(c.Query("format")) + + if (strings.Compare(ecc, "L") == 0) || + (strings.Compare(ecc, "M") == 0) || + (strings.Compare(ecc, "Q") == 0) || + (strings.Compare(ecc, "H") == 0) { + + if strings.Compare(ecc, "L") == 0 { + recovery_level = qrcode.Low + } else if strings.Compare(ecc, "M") == 0 { + recovery_level = qrcode.Medium + } else if strings.Compare(ecc, "Q") == 0 { + recovery_level = qrcode.High + } else if strings.Compare(ecc, "H") == 0 { + recovery_level = qrcode.Highest + } else { + log.Error("ECC aka RecoveryLevel is not supported") + } + } + + mycolor, _ := ParseHexColor(color) + mybgcolor, _ := ParseHexColor(bgcolor) + + var q *qrcode.QRCode + q, err := qrcode.New(data, recovery_level) + checkError(err) + q.ForegroundColor = mycolor + q.BackgroundColor = mybgcolor + + if strings.Compare(format, "svg") == 0 { + qrSVG, err := q.SVG() + checkError(err) + + c.Header("Content-Disposition", "inline; filename=qrcode.svg") + c.Data(http.StatusOK, "application/octet-stream", []byte(qrSVG)) + } else /* if strings.Compare(format, "eps") == 0 { + qrEPS, err := q.EPS() + checkError(err) + + c.Header("Content-Disposition", "inline; filename=qrcode.eps") + c.Data(http.StatusOK, "application/octet-stream", []byte(qrEPS)) + } else if strings.Compare(format, "pdf") == 0 { + qrPDF, err := q.PDF() + checkError(err) + + c.Header("Content-Disposition", "inline; filename=qrcode.pdf") + c.Data(http.StatusOK, "application/octet-stream", []byte(qrPDF)) + } else */{ + var png []byte + png, err = q.PNG(size) + checkError(err) + + c.Header("Content-Disposition", "inline; filename=qrcode.png") + c.Data(http.StatusOK, "application/octet-stream", png) + } +} + +func main() { + router := gin.New() + + router.Use(gin.Recovery()) + router.Use(LoggingMiddleware()) + + router.GET("/api/qrcode", getQRCode) + + router.Run(":6868") +} + +func checkError(err error) { + if err != nil { + log.Error(err) + } +} diff --git a/qrcode.go b/qrcode.go index d0541bc..f8b2068 100644 --- a/qrcode.go +++ b/qrcode.go @@ -60,8 +60,10 @@ import ( "log" "os" - bitset "github.com/skip2/go-qrcode/bitset" - reedsolomon "github.com/skip2/go-qrcode/reedsolomon" + canvas "github.com/tdewolff/canvas" + "github.com/tdewolff/canvas/renderers/svg" + bitset "github.com/uncopied/go-qrcode/bitset" + reedsolomon "github.com/uncopied/go-qrcode/reedsolomon" ) // Encode a QR Code and return a raw PNG image. @@ -331,6 +333,70 @@ func (q *QRCode) Image(size int) image.Image { return img } +func (q *QRCode) DrawQRCode(ctx *canvas.Context, xQRCode float64, yQRCode float64, widthQRCode float64) { + // Build QR code. + q.encode() + + // Minimum pixels (both width and height) required. + size := q.symbol.size + if size == 0 { + log.Fatal("q.symbol.size is ZERO, will /0 fail") + } + pixelWidth := widthQRCode / float64(size) + + ctx.SetFillColor(canvas.White) + ctx.DrawPath(xQRCode, yQRCode, canvas.Rectangle(widthQRCode, widthQRCode)) + + // Saves a few bytes to have them in this order + ctx.SetFillColor(canvas.Black) + + // QR code bitmap. + bitmap := q.symbol.bitmap() + + // Map each image pixel to the nearest QR code module. + for y := 0; y < size; y++ { + for x := 0; x < size; x++ { + v := bitmap[y][x] + if v { + ctx.DrawPath(xQRCode+float64(x)*pixelWidth, yQRCode+float64(size-y)*pixelWidth, canvas.Rectangle(pixelWidth, pixelWidth)) + } + } + } +} + +// Canvas returns the QR Code as an image.Image. +// +// Based on Image +func (q *QRCode) Canvas() *canvas.Canvas { + // Build QR code. + q.encode() + + // Minimum pixels (both width and height) required. + size := q.symbol.size + + c := canvas.New(float64(size), float64(size)) + ctx := canvas.NewContext(c) + ctx.SetFillColor(canvas.White) + ctx.DrawPath(float64(0), float64(0), canvas.Rectangle(float64(size), float64(size))) + + // Saves a few bytes to have them in this order + ctx.SetFillColor(canvas.Black) + + // QR code bitmap. + bitmap := q.symbol.bitmap() + + // Map each image pixel to the nearest QR code module. + for y := 0; y < size; y++ { + for x := 0; x < size; x++ { + v := bitmap[y][x] + if v { + ctx.DrawPath(float64(x), float64(size-y), canvas.Rectangle(float64(1), float64(1))) + } + } + } + return c +} + // PNG returns the QR Code as a PNG image. // // size is both the image width and height in pixels. If size is too small then @@ -351,6 +417,46 @@ func (q *QRCode) PNG(size int) ([]byte, error) { return b.Bytes(), nil } +// SVG returns the QR Code as a SVG image. +// +// size is both the image width and height in pixels. If size is too small then +// a larger image is silently returned. Negative values for size cause a +// variable sized image to be returned: See the documentation for Image(). +func (q *QRCode) SVG() (string, error) { + c := q.Canvas() + // import "bytes" + buf := new(bytes.Buffer) + w := svg.Writer + + w(buf, c) + // for debug + //c.WriteFile("qrcode_out.svg", svg.Writer) + //c.WriteFile("qrcode_out.pdf", pdf.Writer) + //c.WriteFile("qrcode_out.eps", eps.Writer) + //c.WriteFile("qrcode_out.png", rasterizer.PNGWriter(3.2)) + return buf.String(), nil +} + +/* +func (q *QRCode) EPS() (string, error) { + c := q.Canvas() + buf := new(bytes.Buffer) + w := eps.Writer + + w(buf, c) + return buf.String(), nil +} + +func (q *QRCode) PDF() (string, error) { + c := q.Canvas() + buf := new(bytes.Buffer) + w := pdf.Writer + + w(buf, c) + return buf.String(), nil +} +*/ + // Write writes the QR Code as a PNG image to io.Writer. // // size is both the image width and height in pixels. If size is too small then diff --git a/qrcode/main.go b/qrcode/main.go index a38731c..597eb7b 100644 --- a/qrcode/main.go +++ b/qrcode/main.go @@ -9,11 +9,12 @@ import ( "os" "strings" - qrcode "github.com/skip2/go-qrcode" + qrcode "github.com/uncopied/go-qrcode" ) func main() { - outFile := flag.String("o", "", "out PNG file prefix, empty for stdout") + outFile := flag.String("o", "qrcode", "output file prefix") + outFormat := flag.String("f", "png", "output file format PNG(default) or SVG") size := flag.Int("s", 256, "image size (pixel)") textArt := flag.Bool("t", false, "print as text-art on stdout") negative := flag.Bool("i", false, "invert black and white") @@ -67,19 +68,25 @@ Usage: q.ForegroundColor, q.BackgroundColor = q.BackgroundColor, q.ForegroundColor } - var png []byte - png, err = q.PNG(*size) - checkError(err) - - if *outFile == "" { - os.Stdout.Write(png) - } else { + if *outFormat == "png" { + var png []byte + png, err = q.PNG(*size) + checkError(err) var fh *os.File fh, err = os.Create(*outFile + ".png") checkError(err) defer fh.Close() fh.Write(png) + } else if *outFormat == "svg" { + qrSVG, _ := q.SVG() + var fh *os.File + fh, err = os.Create(*outFile + ".svg") + checkError(err) + defer fh.Close() + fh.WriteString(qrSVG) + } + } func checkError(err error) { diff --git a/reedsolomon/gf_poly.go b/reedsolomon/gf_poly.go index 962f545..65d7b2c 100644 --- a/reedsolomon/gf_poly.go +++ b/reedsolomon/gf_poly.go @@ -7,7 +7,7 @@ import ( "fmt" "log" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) // gfPoly is a polynomial over GF(2^8). diff --git a/reedsolomon/reed_solomon.go b/reedsolomon/reed_solomon.go index 561697b..ab0c74d 100644 --- a/reedsolomon/reed_solomon.go +++ b/reedsolomon/reed_solomon.go @@ -13,7 +13,7 @@ package reedsolomon import ( "log" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) // Encode data for QR Code 2005 using the appropriate Reed-Solomon code. diff --git a/reedsolomon/reed_solomon_test.go b/reedsolomon/reed_solomon_test.go index 88948a2..3096d0f 100644 --- a/reedsolomon/reed_solomon_test.go +++ b/reedsolomon/reed_solomon_test.go @@ -6,7 +6,7 @@ package reedsolomon import ( "testing" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) func TestGeneratorPoly(t *testing.T) { diff --git a/regular_symbol.go b/regular_symbol.go index 51eb148..5fb519d 100644 --- a/regular_symbol.go +++ b/regular_symbol.go @@ -4,7 +4,7 @@ package qrcode import ( - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) type regularSymbol struct { diff --git a/regular_symbol_test.go b/regular_symbol_test.go index 936fdc0..36acde3 100644 --- a/regular_symbol_test.go +++ b/regular_symbol_test.go @@ -7,7 +7,7 @@ import ( "fmt" "testing" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) func TestBuildRegularSymbol(t *testing.T) { diff --git a/version.go b/version.go index 738cf3d..ecb9c54 100644 --- a/version.go +++ b/version.go @@ -6,7 +6,7 @@ package qrcode import ( "log" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) // Error detection/recovery capacity. diff --git a/version_test.go b/version_test.go index 5640226..8728f11 100644 --- a/version_test.go +++ b/version_test.go @@ -6,7 +6,7 @@ package qrcode import ( "testing" - bitset "github.com/skip2/go-qrcode/bitset" + bitset "github.com/uncopied/go-qrcode/bitset" ) func TestFormatInfo(t *testing.T) {