gilo/internal/editor/document/document.go
Timothy J. Warren 787166df3a
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timw4mail/gilo/pipeline/head This commit looks good
Move stuff again, just because
2021-04-02 15:36:43 -04:00

120 lines
1.8 KiB
Go

package document
import (
"bufio"
"log"
"os"
"timshome.page/gilo/internal/gilo"
)
type Document struct {
dirty bool
Filename string
rows []*Row
}
func NewDocument() *Document {
var rows []*Row
return &Document{
false,
"",
rows,
}
}
func (d *Document) Open(filename string) {
file, err := os.Open(filename)
if err != nil {
log.Fatalf("failed to open file")
}
defer file.Close()
d.Filename = filename
scanner := bufio.NewScanner(file)
scanner.Split(bufio.ScanLines)
for scanner.Scan() {
d.AppendRow(scanner.Text())
}
d.dirty = false
}
func (d *Document) Save() int {
if d.Filename == "" {
return 0
}
file, err := os.OpenFile(d.Filename, os.O_RDWR|os.O_CREATE, 0644)
if err != nil {
panic("failed to open/create file for saving")
}
defer file.Close()
fileStr := d.ToString()
fileLen := len(fileStr)
err = file.Truncate(int64(fileLen))
if err != nil {
panic("failed to truncate file")
}
size, err := file.WriteString(fileStr)
if err != nil {
panic("failed to save Document to file")
}
if fileLen == size {
return size
}
d.dirty = false
return 0
}
func (d *Document) Row(at int) *Row {
return d.rows[at]
}
func (d *Document) AppendRow(s string) {
newRow := newRow(s)
newRow.update()
d.rows = append(d.rows, newRow)
d.dirty = true
}
func (d *Document) ToString() string {
buf := gilo.NewBuffer()
for _, row := range d.rows {
buf.Append(row.toString())
buf.AppendRune('\n')
}
return buf.ToString()
}
func (d *Document) RowCount() int {
return len(d.rows)
}
func (d *Document) InsertChar(at *gilo.Point, ch rune) {
d.rows[at.Y].insertRune(ch, at.X)
d.dirty = true
}
func (d *Document) DelChar(at *gilo.Point) {
d.rows[at.Y].deleteRune(at.X)
d.dirty = true
}
func (d *Document) IsDirty() bool {
return d.dirty
}