2021-09-15 13:43:01 +00:00
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/*
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Package heffalump attempts to encapsulate the original work by carlmjohnson on heffalump
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https://github.com/carlmjohnson/heffalump
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2021-09-15 21:25:02 +00:00
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*/
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2021-09-15 13:43:01 +00:00
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package heffalump
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import (
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"bufio"
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2021-09-15 13:43:01 +00:00
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"io"
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"sync"
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2022-09-11 10:04:46 +00:00
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"github.com/yunginnanet/HellPot/internal/config"
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2021-09-15 13:43:01 +00:00
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)
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var log = config.GetLogger()
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// DefaultHeffalump represents a Heffalump type
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var DefaultHeffalump *Heffalump
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// Heffalump represents our buffer pool and markov map from Heffalump
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type Heffalump struct {
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pool *sync.Pool
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buffsize int
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mm MarkovMap
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}
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// NewHeffalump instantiates a new Heffalump for markov generation and buffer/io operations
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func NewHeffalump(mm MarkovMap, buffsize int) *Heffalump {
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return &Heffalump{
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pool: &sync.Pool{New: func() interface{} {
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b := make([]byte, buffsize)
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return b
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}},
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buffsize: buffsize,
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mm: mm,
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}
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}
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// WriteHell writes markov chain heffalump hell to the provided io.Writer
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func (h *Heffalump) WriteHell(bw *bufio.Writer) (int64, error) {
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var n int64
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var err error
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2021-09-15 16:13:16 +00:00
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defer func() {
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if r := recover(); r != nil {
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log.Error().Interface("caller", r).Msg("panic recovered!")
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}
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}()
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2022-09-11 10:04:46 +00:00
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buf := h.pool.Get().([]byte)
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defer h.pool.Put(buf)
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if _, err = bw.WriteString("<html>\n<body>\n"); err != nil {
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return n, err
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}
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if n, err = io.CopyBuffer(bw, h.mm, buf); err != nil {
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return n, nil
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}
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return n, nil
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}
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