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   arr.g

   arrstr.g

   arrustr.g

   buf.g

   console.g

   fcopy.g

   ffind.g

   file.g

   hash.g

   math.g

   process.g

   search.g

   stack.g

   stdlib.g

   str.g

   stradv.g

   strfile.g

   system.g

   ustr.g

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source\lib\stdlib\search.g
  1 /******************************************************************************
  2 *
  3 * Copyright (C) 2004-2007, 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 define <export>{
 15 /*-----------------------------------------------------------------------------
 16 * Id: patternflags D
 17 * 
 18 * Summary: Flags for spattern.init method.
 19 *
 20 -----------------------------------------------------------------------------*/
 21    QS_IGNCASE  =  0x0001   // Case-insensitive search.
 22    QS_WORD     =  0x0002   // Search the whole word only.
 23    QS_BEGINWORD = 0x0004   // Search words which start with the specified /
 24                            // pattern.
 25    
 26 //-----------------------------------------------------------------------------  
 27 }
 28 
 29 /*-----------------------------------------------------------------------------
 30 * Id: spattern T 
 31 * 
 32 * Summary: The pattern structure for the searching. The spattern type is used 
 33            to search through the string for another string. Don't change 
 34            the fields of the spattern strcuture. The spattern variable
 35            must be initialized with #a(spattern_init) method.
 36 *
 37 -----------------------------------------------------------------------------*/
 38 
 39 type spattern
 40 { 
 41    uint      pattern             // Hidden data.
 42    uint      size                // The size of the pattern.
 43    reserved  shift[1024]         // Hidden data. 
 44    uint      flag                // Search flags.
 45 }
 46 
 47 /*-----------------------------------------------------------------------------
 48 * Id: spattern_init F2
 49 *
 50 * Summary: Creating data search pattern. Before search start-up, call this
 51            method in order to initialize the search pattern. Then do a search 
 52            of the specified pattern with #a( spattern_search ).  
 53 *  
 54 * Params: pattern - Search string (pattern). 
 55           flag - Search flags.$$[patternflags]  
 56 * 
 57 * Return: #lng/retobj#
 58 *
 59 -----------------------------------------------------------------------------*/
 60 
 61 method  spattern spattern.init( buf pattern, uint flag )
 62 {
 63    qs_init( &this, pattern.ptr(), *pattern, flag )
 64    return this
 65 }
 66 
 67 /*-----------------------------------------------------------------------------
 68 * Id: spattern_search F2
 69 *
 70 * Summary: Search a pattern in another string. Before search start-up, call the
 71            #a( spattern_init ) method in order to initialize the search 
 72            pattern. 
 73 *  
 74 * Params: src - String where the specified string will be searched (search /
 75                 pattern). 
 76           offset - Offset where the search must be started or proceeded. 
 77 * 
 78 * Return: The offset of the found fragment. If the offset is equal to string
 79           size,no fragment is found. 
 80 *
 81 -----------------------------------------------------------------------------*/
 82 
 83 method  uint spattern.search( buf src, uint offset )
 84 {
 85    return offset + qs_search( &this, src.ptr() + offset, 
 86                               *src - offset ) 
 87 }
 88 
 89 /*-----------------------------------------------------------------------------
 90 * Id: spattern_search_1 FA
 91 *
 92 * Summary: Search a pattern in a memory data. 
 93 *  
 94 * Params: ptr - The pointer to the memory data where the pattern will be /
 95                 searched. 
 96           size - The size of the memory data. 
 97 * 
 98 * Return: The offset of the found fragment. If the offset is equal to string
 99           size,no fragment is found. 
100 *
101 -----------------------------------------------------------------------------*/
102 
103 method uint spattern.search( uint ptr, uint size )
104 {
105    return qs_search( &this, ptr, size ) 
106 }
107 
108 /*-----------------------------------------------------------------------------
109 * Id: spattern_init_1 FA
110 *
111 * Summary: Creating data search pattern.
112 *
113 * Params: pattern - Search string (pattern). 
114           flag - Search flags.$$[patternflags]  
115 * 
116 -----------------------------------------------------------------------------*/
117 
118 method  spattern spattern.init( str pattern, uint flag )
119 {
120    qs_init( &this, pattern.ptr(), *pattern, flag )
121    return this
122 }
123 
124 /*-----------------------------------------------------------------------------
125 * Id: spattern_search_2 FA
126 *
127 * Summary: Search a pattern in another string.
128 *  
129 * Params: src - String where the specified string will be searched (search /
130                 pattern). 
131           offset - Offset where the search must be started or proceeded. 
132 * 
133 * Return: The offset of the found fragment. If the offset is equal to string
134           size,no fragment is found. 
135 *
136 -----------------------------------------------------------------------------*/
137 
138 method  uint spattern.search( str src, uint offset )
139 {
140    return offset + qs_search( &this, src.ptr() + offset,
141                               *src - offset ) 
142 }
143 
144 /*-----------------------------------------------------------------------------
145 ** Id: str_search F2
146 *
147 * Summary: Substring search. The method determines if the string has been 
148            found inside another string or not. 
149 *  
150 * Params: pattern - Search string (pattern). 
151           flag - Search flags.$$[patternflags] 
152 * 
153 * Return: The method returns 1 if the substring is found, otherwise the return
154           value is zero. 
155 *
156 -----------------------------------------------------------------------------*/
157 
158 method  uint str.search( str pattern, uint flag )
159 {
160    spattern sp
161 
162    sp.init( pattern, flag )
163    return sp.search( this, 0 ) < *this 
164 } 
165 
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