Source file src/github.com/huandu/xstrings/common.go

Documentation: github.com/huandu/xstrings

     1  // Copyright 2015 Huan Du. All rights reserved.
     2  // Licensed under the MIT license that can be found in the LICENSE file.
     3  
     4  package xstrings
     5  
     6  const bufferMaxInitGrowSize = 2048
     7  
     8  // Lazy initialize a buffer.
     9  func allocBuffer(orig, cur string) *stringBuilder {
    10  	output := &stringBuilder{}
    11  	maxSize := len(orig) * 4
    12  
    13  	// Avoid to reserve too much memory at once.
    14  	if maxSize > bufferMaxInitGrowSize {
    15  		maxSize = bufferMaxInitGrowSize
    16  	}
    17  
    18  	output.Grow(maxSize)
    19  	output.WriteString(orig[:len(orig)-len(cur)])
    20  	return output
    21  }
    22  

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