mirror of
https://github.com/kovidgoyal/kitty
synced 2026-06-06 01:05:48 +02:00
110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package at
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import (
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"bytes"
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"fmt"
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"image"
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"io"
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"os"
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"strings"
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"github.com/emmansun/base64"
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"github.com/kovidgoyal/kitty/tools/utils/images"
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)
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func set_payload_data(io_data *rc_io_data, data string) {
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set_payload_string_field(io_data, "Data", data)
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}
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func read_window_logo(io_data *rc_io_data, path string) (func(io_data *rc_io_data) (bool, error), error) {
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if strings.ToLower(path) == "none" {
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io_data.rc.Stream = false
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return func(io_data *rc_io_data) (bool, error) {
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set_payload_data(io_data, "-")
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return true, nil
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}, nil
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}
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f, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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var image_data_stream io.Reader
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image_data_stream = f
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config, format, ierr := image.DecodeConfig(f)
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if ierr != nil {
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return nil, fmt.Errorf("%s is not a supported image format", path)
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}
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f.Seek(0, 0)
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if format != "png" {
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f.Seek(0, 0)
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img, _, err := image.Decode(f)
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if err != nil {
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f.Close()
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}
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f.Close()
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b := bytes.Buffer{}
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b.Grow(config.Height * config.Width * 4)
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err = images.Encode(&b, img, "image/png")
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if err != nil {
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return nil, err
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}
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image_data_stream = &b
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}
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is_first_call := true
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buf := make([]byte, 2048)
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return func(io_data *rc_io_data) (bool, error) {
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if is_first_call {
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is_first_call = false
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} else {
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io_data.rc.Stream = false
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}
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buf = buf[:cap(buf)]
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n, err := image_data_stream.Read(buf)
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if err != nil && err != io.EOF {
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return false, err
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}
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buf = buf[:n]
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set_payload_data(io_data, base64.StdEncoding.EncodeToString(buf))
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if err == io.EOF {
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return true, nil
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}
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return false, nil
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}, nil
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}
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func is_index_arg(s string) bool {
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if len(s) == 0 {
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return false
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}
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start := 0
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if s[0] == '+' || s[0] == '-' {
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start = 1
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}
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if start >= len(s) {
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return false
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}
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for _, c := range s[start:] {
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if c < '0' || c > '9' {
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return false
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}
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}
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return true
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}
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func read_background_image(io_data *rc_io_data, path string) (func(io_data *rc_io_data) (bool, error), error) {
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if is_index_arg(path) {
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io_data.rc.Stream = false
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return func(io_data *rc_io_data) (bool, error) {
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set_payload_data(io_data, "index:"+path)
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return true, nil
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}, nil
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}
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return read_window_logo(io_data, path)
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}
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