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  1 /******************************************************************************
  2 *
  3 * Copyright (C) 2008, The Gentee Group. All rights reserved. 
  4 * This file is part of the Gentee open source project - http://www.gentee.com. 
  5 * 
  6 * THIS FILE IS PROVIDED UNDER THE TERMS OF THE GENTEE LICENSE ("AGREEMENT"). 
  7 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS FILE CONSTITUTES RECIPIENTS 
  8 * ACCEPTANCE OF THE AGREEMENT.
  9 *
 10 * Author: Alexey Krivonogov ( gentee )
 11 *
 12 ******************************************************************************/
 13 
 14 /*-----------------------------------------------------------------------------
 15 * Id: str_replace_1 FA
 16 * 
 17 * Summary: The method looks for strings from one array and replace to strings 
 18            of another array. 
 19 * 
 20 * Params: aold - The strings to be replaced. 
 21           anew - The new strings. 
 22           flags - Flags. $$[patternflags] 
 23 *
 24 * Return: #lng/retobj#
 25 *
 26 -----------------------------------------------------------------------------*/
 27 
 28 method str  str.replace( arrstr aold, arrstr anew, uint flags )
 29 {
 30    uint i cur ok end
 31    uint count = *aold
 32    arr  pat[ count ] of spattern
 33    arr  off[ count ]
 34    str  ret
 35    
 36    if !count : return this
 37    
 38    fornum i, count : pat[i].init( aold[i], flags )
 39    end = *this 
 40    while cur < end
 41    {   
 42       uint ioff
 43       fornum i = 0, count
 44       {
 45          if off[i] <= cur : off[i] = pat[i].search( this, cur )
 46          if off[i] < off[ ioff ] : ioff = i
 47 //         print("\(i)=\(off[i])\n") 
 48       }
 49       ret.append( this.ptr() + cur, off[ ioff ] - cur )
 50       cur += off[ ioff ] - cur
 51       if off[ ioff ] < end
 52       {
 53 //         print( "Find \(off[ ioff ]) \(end)\n")
 54          ret.append( anew[ ioff ].ptr(), *anew[ ioff ] )
 55          cur += *aold[ ioff ]
 56          ok = 1
 57       }
 58    }   
 59    if ok : this = ret
 60     
 61    return this
 62 }
 63 
 64 /*-----------------------------------------------------------------------------
 65 * Id: str_replace_2 FA
 66 * 
 67 * Summary: The method replaces one string to another string in the source
 68            string. 
 69 * 
 70 * Params: sold - The string to be replaced. 
 71           snew - The new string. 
 72           flags - Flags. $$[patternflags] 
 73 *
 74 * Return: #lng/retobj#
 75 *
 76 -----------------------------------------------------------------------------*/
 77 
 78 method str  str.replace( str sold, str snew, uint flags )
 79 {
 80    uint cur ok end
 81    spattern pat
 82    uint off
 83    str  ret
 84    
 85    pat.init( sold, flags )
 86    end = *this 
 87    while cur < end
 88    {   
 89       uint ioff
 90       
 91       off = pat.search( this, cur )
 92       ret.append( this.ptr() + cur, off - cur )
 93       cur += off - cur
 94       if off < end
 95       {
 96          ret.append( snew.ptr(), *snew )
 97          cur += *sold
 98          ok = 1
 99       }
100    }   
101    if ok : this = ret
102     
103    return this
104 }
105 
106 /*-----------------------------------------------------------------------------
107 ** Id: arrstr_replace F2
108 * 
109 * Summary: Replace substrings for the each item. The method looks for 
110            strings from one array and replace to strings 
111            of another array for the each string of the array. 
112 * 
113 * Params: aold - The strings to be replaced. 
114           anew - The new strings. 
115           flags - Flags. $$[patternflags] 
116 *
117 * Return: #lng/retobj#
118 *
119 -----------------------------------------------------------------------------*/
120 
121 method arrstr  arrstr.replace( arrstr aold, arrstr anew, uint flags )
122 {
123    foreach cur, this : cur.replace( aold, anew, flags )
124    return this
125 }
126