62 lines
976 B
Go
62 lines
976 B
Go
package main
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import (
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"io/ioutil"
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"strings"
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)
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type Buffer struct {
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r *Rope
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// Path to the file on disk
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path string
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// Name of the buffer on the status line
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name string
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// This is the text stored everytime the buffer is saved to check if the buffer is modified
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savedText string
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text string
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lines []string
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}
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func newBuffer(txt, path string) *Buffer {
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b := new(Buffer)
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b.r = newRope(txt)
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b.path = path
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b.name = path
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b.savedText = txt
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b.update()
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return b
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}
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func (b *Buffer) update() {
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b.text = b.r.toString()
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b.lines = strings.Split(b.text, "\n")
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}
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func (b *Buffer) save() error {
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return b.saveAs(b.path)
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}
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func (b *Buffer) saveAs(filename string) error {
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err := ioutil.WriteFile(filename, []byte(b.text), 0644)
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return err
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}
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func (b *Buffer) insert(idx int, value string) {
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b.r.insert(idx, value)
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b.update()
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}
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func (b *Buffer) remove(start, end int) {
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b.r.remove(start, end)
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b.update()
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}
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func (b *Buffer) length() int {
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return b.r.len
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}
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