parse.go

Documentation: k8s.io/utils/internal/third_party/forked/golang/net

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Simple file i/o and string manipulation, to avoid
     6  // depending on strconv and bufio and strings.
     7  
     8  package net
     9  
    10  ///////////////////////////////////////////////////////////////////////////////
    11  // NOTE: This file was forked because it is used by other code that needed to
    12  // be forked, not because it is used on its own.
    13  ///////////////////////////////////////////////////////////////////////////////
    14  
    15  // Bigger than we need, not too big to worry about overflow
    16  const big = 0xFFFFFF
    17  
    18  // Decimal to integer.
    19  // Returns number, characters consumed, success.
    20  func dtoi(s string) (n int, i int, ok bool) {
    21  	n = 0
    22  	for i = 0; i < len(s) && '0' <= s[i] && s[i] <= '9'; i++ {
    23  		n = n*10 + int(s[i]-'0')
    24  		if n >= big {
    25  			return big, i, false
    26  		}
    27  	}
    28  	if i == 0 {
    29  		return 0, 0, false
    30  	}
    31  	return n, i, true
    32  }
    33  
    34  // Hexadecimal to integer.
    35  // Returns number, characters consumed, success.
    36  func xtoi(s string) (n int, i int, ok bool) {
    37  	n = 0
    38  	for i = 0; i < len(s); i++ {
    39  		if '0' <= s[i] && s[i] <= '9' {
    40  			n *= 16
    41  			n += int(s[i] - '0')
    42  		} else if 'a' <= s[i] && s[i] <= 'f' {
    43  			n *= 16
    44  			n += int(s[i]-'a') + 10
    45  		} else if 'A' <= s[i] && s[i] <= 'F' {
    46  			n *= 16
    47  			n += int(s[i]-'A') + 10
    48  		} else {
    49  			break
    50  		}
    51  		if n >= big {
    52  			return 0, i, false
    53  		}
    54  	}
    55  	if i == 0 {
    56  		return 0, i, false
    57  	}
    58  	return n, i, true
    59  }
    60
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