gocaptcha

README

gocaptcha

golang captcha lib

Install

go get github.com/l2x/gocaptcha

Example

package main

import (
    "bufio"
    "fmt"
    "github.com/l2x/gocaptcha"
    "io"
    "os"
)

func main() {
    capt := gocaptcha.New()
    f, txt, err := capt.Create()
    if err != nil {
        fmt.Println(err)
        return
    }

    fo, err := os.Create("out.png")
    if err != nil {
        panic(err)
    }
    // close fo on exit and check for its returned error
    defer func() {
        if err := fo.Close(); err != nil {
            panic(err)
        }
    }()
    // make a write buffer
    w := bufio.NewWriter(fo)

    // make a buffer to keep chunks that are read
    buf := make([]byte, 1024)
    for {
        // read a chunk
        n, err := f.Read(buf)
        if err != nil && err != io.EOF {
            panic(err)
        }
        if n == 0 {
            break
        }

        // write a chunk
        if _, err := w.Write(buf[:n]); err != nil {
            panic(err)
        }
    }

    if err = w.Flush(); err != nil {
        panic(err)
    }

    fmt.Println("Wrote out.png OK. text is ", txt)
}

Documentation

Index

• type Capthca
  • func New() *Capthca
  • func (c *Capthca) Config(conf map[string]interface{})
  • func (c *Capthca) Create() (*bytes.Buffer, string, error)

Types

type Capthca

type Capthca struct {
	Dpi      float64
	Font     string
	FontSize float64
	Width    int
	Height   int
	Length   int
}

func New

func New() *Capthca

func (*Capthca) Config

func (c *Capthca) Config(conf map[string]interface{})

func (*Capthca) Create

func (c *Capthca) Create() (*bytes.Buffer, string, error)