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bircni
b86fcb2ff5
pr diff copied the server's patch bytes straight to stdout, so a pull request could change the terminal title, clear the screen or move the cursor of whoever viewed its diff. Add terminal.SafeWriter, which filters streamed server text like terminal.SafeText when stdout is a terminal, and use it for pr diff. Piped output stays byte-exact, so `tea pr diff N | git apply` keeps working. Signed-off-by: bircni <bircni@icloud.com>
46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
// Copyright 2026 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package terminal
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import (
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"bytes"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestSafeWriter(t *testing.T) {
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const hostile = "+hello \x1b]0;PWNED\x07 \x1b[1;31mred\x1b[0m\x1b[2J\r\n\u009b2J\u202eend\t\xff\x1b[1111111111111111111111111111111111m\n"
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var piped bytes.Buffer
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_, err := SafeWriter(&piped, false, false).Write([]byte(hostile))
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require.NoError(t, err)
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require.Equal(t, hostile, piped.String())
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for _, tc := range []struct {
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name string
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allowSGR bool
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want string
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}{
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{"drops every escape", false, "+hello ]0;PWNED [1;31mred[0m[2J\n2Jend\t\uFFFD[1111111111111111111111111111111111m\n"},
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{"keeps colors", true, "+hello ]0;PWNED \x1b[1;31mred\x1b[0m[2J\n2Jend\t\uFFFD[1111111111111111111111111111111111m\n"},
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} {
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t.Run(tc.name, func(t *testing.T) {
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if !tc.allowSGR {
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require.Equal(t, SafeText(hostile), tc.want)
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}
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for _, chunk := range []int{len(hostile), 1, 3} {
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var out bytes.Buffer
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w := SafeWriter(&out, true, tc.allowSGR)
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for data := []byte(hostile); len(data) > 0; {
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n := min(chunk, len(data))
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written, err := w.Write(data[:n])
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require.NoError(t, err)
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require.Equal(t, n, written)
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data = data[n:]
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}
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require.Equal(t, tc.want, out.String(), "chunk size %d", chunk)
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}
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})
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}
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}
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