1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_sc.hxx" 26 27 // System - Includes ----------------------------------------------------- 28 29 #include "stringutil.hxx" 30 #include "rtl/ustrbuf.hxx" 31 #include "rtl/math.hxx" 32 33 using ::rtl::OUString; 34 using ::rtl::OUStringBuffer; 35 36 bool ScStringUtil::parseSimpleNumber( 37 const OUString& rStr, sal_Unicode dsep, sal_Unicode gsep, double& rVal) 38 { 39 if (gsep == 0x00A0) 40 // unicode space to ascii space 41 gsep = 0x0020; 42 43 OUStringBuffer aBuf; 44 sal_Int32 n = rStr.getLength(); 45 const sal_Unicode* p = rStr.getStr(); 46 sal_Int32 nPosDSep = -1, nPosGSep = -1; 47 sal_uInt32 nDigitCount = 0; 48 49 for (sal_Int32 i = 0; i < n; ++i) 50 { 51 sal_Unicode c = p[i]; 52 if (c == 0x00A0) 53 // unicode space to ascii space 54 c = 0x0020; 55 56 if (sal_Unicode('0') <= c && c <= sal_Unicode('9')) 57 { 58 // this is a digit. 59 aBuf.append(c); 60 ++nDigitCount; 61 } 62 else if (c == dsep) 63 { 64 // this is a decimal separator. 65 66 if (nPosDSep >= 0) 67 // a second decimal separator -> not a valid number. 68 return false; 69 70 if (nPosGSep >= 0 && i - nPosGSep != 4) 71 // the number has a group separator and the decimal sep is not 72 // positioned correctly. 73 return false; 74 75 nPosDSep = i; 76 nPosGSep = -1; 77 aBuf.append(c); 78 nDigitCount = 0; 79 } 80 else if (c == gsep) 81 { 82 // this is a group (thousand) separator. 83 84 if (i == 0) 85 // not allowed as the first character. 86 return false; 87 88 if (nPosDSep >= 0) 89 // not allowed after the decimal separator. 90 return false; 91 92 if (nPosGSep >= 0 && nDigitCount != 3) 93 // must be exactly 3 digits since the last group separator. 94 return false; 95 96 nPosGSep = i; 97 nDigitCount = 0; 98 } 99 else if (c == sal_Unicode('-') || c == sal_Unicode('+')) 100 { 101 // A sign must be the first character if it's given. 102 if (i == 0) 103 aBuf.append(c); 104 else 105 return false; 106 } 107 else 108 return false; 109 } 110 111 // finished parsing the number. 112 113 if (nPosGSep >= 0 && nDigitCount != 3) 114 // must be exactly 3 digits since the last group separator. 115 return false; 116 117 rtl_math_ConversionStatus eStatus = rtl_math_ConversionStatus_Ok; 118 sal_Int32 nParseEnd = 0; 119 rVal = ::rtl::math::stringToDouble(aBuf.makeStringAndClear(), dsep, gsep, &eStatus, &nParseEnd); 120 if (eStatus != rtl_math_ConversionStatus_Ok) 121 return false; 122 123 return true; 124 } 125