diff --git a/stdoutFakefile.go b/stdoutFakefile.go new file mode 100644 index 0000000..21e3d49 --- /dev/null +++ b/stdoutFakefile.go @@ -0,0 +1,73 @@ +// Copyright 2017-2025 WIT.COM Inc. All rights reserved. +// Use of this source code is governed by the GPL 3.0 + +package main + +import ( + "bytes" + "errors" + "io" + + "github.com/awesome-gocui/gocui" +) + +type FakeFile struct { + reader *bytes.Reader + buffer *bytes.Buffer + offset int64 + view *gocui.View +} + +func (f *FakeFile) Read(p []byte) (n int, err error) { + n, err = f.reader.ReadAt(p, f.offset) + f.offset += int64(n) + return n, err +} + +var fakecount int = 0 + +func (f *FakeFile) Write(p []byte) (n int, err error) { + n, err = f.buffer.Write(p) + f.offset += int64(n) + f.reader.Reset(f.buffer.Bytes()) + f.view.Write(p) + fakecount += 1 + if fakecount > 20 { + fakecount = 0 + f.view.Clear() + } + return n, err +} + +func (f *FakeFile) Seek(offset int64, whence int) (int64, error) { + newOffset := f.offset + + switch whence { + case io.SeekStart: + newOffset = offset + case io.SeekCurrent: + newOffset += offset + case io.SeekEnd: + newOffset = int64(f.buffer.Len()) + offset + default: + return 0, errors.New("Seek: whence not at start,current or end") + } + // never can get here right? + + if newOffset < 0 { + return 0, errors.New("Seek: offset < 0") + } + + f.offset = newOffset + return f.offset, nil +} + +func NewFakeFile(v *gocui.View) *FakeFile { + buf := &bytes.Buffer{} + return &FakeFile{ + reader: bytes.NewReader(buf.Bytes()), + buffer: buf, + offset: 0, + view: v, + } +}