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 bool haveSeenDigit = false; 49 50 for (sal_Int32 i = 0; i < n; ++i) 51 { 52 sal_Unicode c = p[i]; 53 if (c == 0x00A0) 54 // unicode space to ascii space 55 c = 0x0020; 56 57 if (sal_Unicode('0') <= c && c <= sal_Unicode('9')) 58 { 59 // this is a digit. 60 aBuf.append(c); 61 haveSeenDigit = true; 62 ++nDigitCount; 63 } 64 else if (c == dsep) 65 { 66 // this is a decimal separator. 67 68 if (nPosDSep >= 0) 69 // a second decimal separator -> not a valid number. 70 return false; 71 72 if (nPosGSep >= 0 && i - nPosGSep != 4) 73 // the number has a group separator and the decimal sep is not 74 // positioned correctly. 75 return false; 76 77 nPosDSep = i; 78 nPosGSep = -1; 79 aBuf.append(c); 80 nDigitCount = 0; 81 } 82 else if (c == gsep) 83 { 84 // this is a group (thousand) separator. 85 86 if (!haveSeenDigit) 87 // not allowed before digits. 88 return false; 89 90 if (nPosDSep >= 0) 91 // not allowed after the decimal separator. 92 return false; 93 94 if (nPosGSep >= 0 && nDigitCount != 3) 95 // must be exactly 3 digits since the last group separator. 96 return false; 97 98 nPosGSep = i; 99 nDigitCount = 0; 100 } 101 else if (c == sal_Unicode('-') || c == sal_Unicode('+')) 102 { 103 // A sign must be the first character if it's given. 104 if (i == 0) 105 aBuf.append(c); 106 else 107 return false; 108 } 109 else 110 return false; 111 } 112 113 // finished parsing the number. 114 115 if (nPosGSep >= 0 && nDigitCount != 3) 116 // must be exactly 3 digits since the last group separator. 117 return false; 118 119 rtl_math_ConversionStatus eStatus = rtl_math_ConversionStatus_Ok; 120 sal_Int32 nParseEnd = 0; 121 rVal = ::rtl::math::stringToDouble(aBuf.makeStringAndClear(), dsep, gsep, &eStatus, &nParseEnd); 122 if (eStatus != rtl_math_ConversionStatus_Ok) 123 return false; 124 125 return true; 126 } 127