author | Simon Howkins <simonh@symbian.org> |
Mon, 15 Nov 2010 14:53:34 +0000 | |
branch | RCL_3 |
changeset 105 | 871af676edac |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
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/************************************************* |
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* Perl-Compatible Regular Expressions * |
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*************************************************/ |
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|
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/* PCRE is a library of functions to support regular expressions whose syntax |
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and semantics are as close as possible to those of the Perl 5 language. |
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|
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Written by Philip Hazel |
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Copyright (c) 1997-2005 University of Cambridge |
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|
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----------------------------------------------------------------------------- |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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|
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* Redistributions of source code must retain the above copyright notice, |
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this list of conditions and the following disclaimer. |
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|
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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|
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* Neither the name of the University of Cambridge nor the names of its |
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contributors may be used to endorse or promote products derived from |
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this software without specific prior written permission. |
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|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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POSSIBILITY OF SUCH DAMAGE. |
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----------------------------------------------------------------------------- |
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*/ |
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|
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|
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/* This module compiles code for supporting the use of Unicode character |
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properties. We use the (embryonic at the time of writing) UCP library, by |
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including some of its files, copies of which have been put in the PCRE |
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distribution. The actual search function is reproduced here, with its name |
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changed. */ |
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|
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|
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#include "pcre_internal.h" |
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|
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#include "ucp.h" /* Category definitions */ |
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#include "ucpinternal.h" /* Internal table details */ |
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#include "ucptable.c" /* The table itself */ |
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|
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/************************************************* |
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* Search table and return data * |
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*************************************************/ |
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|
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/* Two values are returned: the category is ucp_C, ucp_L, etc. The detailed |
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character type is ucp_Lu, ucp_Nd, etc. |
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|
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Arguments: |
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c the character value |
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type_ptr the detailed character type is returned here |
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case_ptr for letters, the opposite case is returned here, if there |
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is one, else zero |
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|
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Returns: the character type category or -1 if not found |
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*/ |
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|
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PCRE_EXPORT int |
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_pcre_ucp_findchar(const int c, int *type_ptr, int *case_ptr) |
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{ |
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cnode *node = ucp_table; |
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register int cc = c; |
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int case_offset; |
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|
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for (;;) |
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{ |
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register int d = node->f1 | ((node->f0 & f0_chhmask) << 16); |
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if (cc == d) break; |
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if (cc < d) |
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{ |
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if ((node->f0 & f0_leftexists) == 0) return -1; |
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node ++; |
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} |
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else |
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{ |
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register int roffset = (node->f2 & f2_rightmask) >> f2_rightshift; |
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if (roffset == 0) return -1; |
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node += 1 << (roffset - 1); |
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} |
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} |
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|
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switch ((*type_ptr = ((node->f0 & f0_typemask) >> f0_typeshift))) |
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{ |
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case ucp_Cc: |
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case ucp_Cf: |
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case ucp_Cn: |
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case ucp_Co: |
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case ucp_Cs: |
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return ucp_C; |
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break; |
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|
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case ucp_Ll: |
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case ucp_Lu: |
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case_offset = node->f2 & f2_casemask; |
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109 |
if ((case_offset & 0x0100) != 0) case_offset |= 0xfffff000; |
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110 |
*case_ptr = (case_offset == 0)? 0 : cc + case_offset; |
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111 |
return ucp_L; |
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112 |
|
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113 |
case ucp_Lm: |
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114 |
case ucp_Lo: |
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115 |
case ucp_Lt: |
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*case_ptr = 0; |
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117 |
return ucp_L; |
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118 |
break; |
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119 |
|
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120 |
case ucp_Mc: |
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121 |
case ucp_Me: |
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122 |
case ucp_Mn: |
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return ucp_M; |
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124 |
break; |
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125 |
|
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case ucp_Nd: |
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127 |
case ucp_Nl: |
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128 |
case ucp_No: |
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return ucp_N; |
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130 |
break; |
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131 |
|
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132 |
case ucp_Pc: |
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133 |
case ucp_Pd: |
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134 |
case ucp_Pe: |
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135 |
case ucp_Pf: |
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136 |
case ucp_Pi: |
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137 |
case ucp_Ps: |
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138 |
case ucp_Po: |
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139 |
return ucp_P; |
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140 |
break; |
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141 |
|
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142 |
case ucp_Sc: |
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143 |
case ucp_Sk: |
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144 |
case ucp_Sm: |
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145 |
case ucp_So: |
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146 |
return ucp_S; |
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147 |
break; |
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148 |
|
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149 |
case ucp_Zl: |
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150 |
case ucp_Zp: |
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151 |
case ucp_Zs: |
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152 |
return ucp_Z; |
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153 |
break; |
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|
154 |
|
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155 |
default: /* "Should never happen" */ |
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Revision: 200911
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156 |
return -1; |
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Revision: 200911
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157 |
break; |
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Revision: 200911
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158 |
} |
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Revision: 200911
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159 |
} |
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Revision: 200911
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160 |
|
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161 |
/* End of pcre_ucp_findchar.c */ |