Gemini to HTML conversion tool and daemon
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package gmitohtml
import (
"io"
"net/http"
"os"
"time"
)
var modTime = time.Now()
type inMemoryFS map[string]http.File
func (fs inMemoryFS) Open(name string) (http.File, error) {
if f, ok := fs[name]; ok {
f.Seek(0, io.SeekStart)
return f, nil
}
panic("No file")
}
type inMemoryFile struct {
at int64
Name string
data []byte
fs inMemoryFS
}
func loadFile(name string, val string, fs inMemoryFS) *inMemoryFile {
return &inMemoryFile{at: 0,
Name: name,
data: []byte(val),
fs: fs}
}
func (f *inMemoryFile) Close() error {
return nil
}
func (f *inMemoryFile) Stat() (os.FileInfo, error) {
return &inMemoryFileInfo{f}, nil
}
func (f *inMemoryFile) Readdir(count int) ([]os.FileInfo, error) {
res := make([]os.FileInfo, len(f.fs))
i := 0
for _, file := range f.fs {
res[i], _ = file.Stat()
i++
}
return res, nil
}
func (f *inMemoryFile) Read(b []byte) (int, error) {
i := 0
for f.at < int64(len(f.data)) && i < len(b) {
b[i] = f.data[f.at]
i++
f.at++
}
return i, nil
}
func (f *inMemoryFile) Seek(offset int64, whence int) (int64, error) {
switch whence {
case 0:
f.at = offset
case 1:
f.at += offset
case 2:
f.at = int64(len(f.data)) + offset
}
return f.at, nil
}
type inMemoryFileInfo struct {
file *inMemoryFile
}
func (s *inMemoryFileInfo) Name() string { return s.file.Name }
func (s *inMemoryFileInfo) Size() int64 { return int64(len(s.file.data)) }
func (s *inMemoryFileInfo) Mode() os.FileMode { return os.ModeTemporary }
func (s *inMemoryFileInfo) ModTime() time.Time { return modTime }
func (s *inMemoryFileInfo) IsDir() bool { return false }
func (s *inMemoryFileInfo) Sys() interface{} { return nil }