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22 lines
520 B
Go
22 lines
520 B
Go
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// Copyright 2015 Huan Du. All rights reserved.
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// Licensed under the MIT license that can be found in the LICENSE file.
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package xstrings
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const bufferMaxInitGrowSize = 2048
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// Lazy initialize a buffer.
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func allocBuffer(orig, cur string) *stringBuilder {
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output := &stringBuilder{}
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maxSize := len(orig) * 4
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// Avoid to reserve too much memory at once.
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if maxSize > bufferMaxInitGrowSize {
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maxSize = bufferMaxInitGrowSize
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}
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output.Grow(maxSize)
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output.WriteString(orig[:len(orig)-len(cur)])
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return output
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}
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