Greg Pomerantz
615957196e
- Add ChunkedBuffer for 64KB chunked file access with dirty-chunk eviction protection - Add LineIndex for precise byte-offset-to-line-number mapping - Refactor IO task system with context cancellation, typed priorities, and new task types (ReadChunk, BuildLineIndex, StatFile) - Add ReadFileAt to FileSystem interface (mock + real implementations) - Integrate virtual scrolling into editor layout - Add comprehensive tests for chunked buffer eviction, dirty-chunk safety, and full edit lifecycle
29 lines
880 B
Go
29 lines
880 B
Go
package editor
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import (
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"bytes"
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"fmt"
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)
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// NewDeterministicFile generates a large byte slice using a repeating pattern.
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// Same parameters always produce identical content.
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func NewDeterministicFile(seed uint64, blockSize int, repeatCount int) []byte {
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block := make([]byte, blockSize)
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for i := 0; i < blockSize; i++ {
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// Simple deterministic pattern based on seed and index
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block[i] = byte((seed + uint64(i)) % 256)
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}
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return bytes.Repeat(block, repeatCount)
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}
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// NewLineBasedFile generates a large file with a fixed number of lines.
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// Each line is predictably formatted: "Line <num>: <seed-based-data>\n".
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func NewLineBasedFile(seed uint64, lineCount int) []byte {
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var buf bytes.Buffer
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for i := 0; i < lineCount; i++ {
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line := fmt.Sprintf("Line %d: seed=%d, data=some-deterministic-filler-text-here\n", i, seed)
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buf.WriteString(line)
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}
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return buf.Bytes()
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}
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