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 #include <osl/file.h> 25 #include <rtl/ustring.h> 26 27 static sal_uInt32 SAL_CALL osl_defCalcTextWidth( rtl_uString *ustrText ) 28 { 29 return ustrText ? ustrText->length : 0; 30 } 31 32 33 oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pfnCalcWidth ) 34 { 35 oslFileError error = osl_File_E_None; 36 rtl_uString *ustrPath = NULL; 37 rtl_uString *ustrFile = NULL; 38 sal_uInt32 uPathWidth, uFileWidth; 39 40 if ( !pfnCalcWidth ) 41 pfnCalcWidth = osl_defCalcTextWidth; 42 43 { 44 sal_Int32 iLastSlash = rtl_ustr_lastIndexOfChar_WithLength( ustrSystemPath->buffer, ustrSystemPath->length, SAL_PATHDELIMITER ); 45 46 if ( iLastSlash >= 0 ) 47 { 48 rtl_uString_newFromStr_WithLength( &ustrPath, ustrSystemPath->buffer, iLastSlash ); 49 rtl_uString_newFromStr_WithLength( &ustrFile, &ustrSystemPath->buffer[iLastSlash], ustrSystemPath->length - iLastSlash ); 50 } 51 else 52 { 53 rtl_uString_new( &ustrPath ); 54 rtl_uString_newFromString( &ustrFile, ustrSystemPath ); 55 } 56 } 57 58 uPathWidth = pfnCalcWidth( ustrPath ); 59 uFileWidth = pfnCalcWidth( ustrFile ); 60 61 /* First abbreviate the directory component of the path */ 62 63 while ( uPathWidth + uFileWidth > uMaxWidth ) 64 { 65 if ( ustrPath->length > 3 ) 66 { 67 ustrPath->length--; 68 ustrPath->buffer[ustrPath->length-3] = '.'; 69 ustrPath->buffer[ustrPath->length-2] = '.'; 70 ustrPath->buffer[ustrPath->length-1] = '.'; 71 ustrPath->buffer[ustrPath->length] = 0; 72 73 uPathWidth = pfnCalcWidth( ustrPath ); 74 } 75 else 76 break; 77 } 78 79 /* Now abbreviate file component */ 80 81 while ( uPathWidth + uFileWidth > uMaxWidth ) 82 { 83 if ( ustrFile->length > 4 ) 84 { 85 ustrFile->length--; 86 ustrFile->buffer[ustrFile->length-3] = '.'; 87 ustrFile->buffer[ustrFile->length-2] = '.'; 88 ustrFile->buffer[ustrFile->length-1] = '.'; 89 ustrFile->buffer[ustrFile->length] = 0; 90 91 uFileWidth = pfnCalcWidth( ustrFile ); 92 } 93 else 94 break; 95 } 96 97 rtl_uString_newConcat( pustrCompacted, ustrPath, ustrFile ); 98 99 /* Event now if path was compacted to ".../..." it can be to large */ 100 101 uPathWidth += uFileWidth; 102 103 while ( uPathWidth > uMaxWidth ) 104 { 105 (*pustrCompacted)->length--; 106 (*pustrCompacted)->buffer[(*pustrCompacted)->length] = 0; 107 uPathWidth = pfnCalcWidth( *pustrCompacted ); 108 } 109 110 if ( ustrPath ) 111 rtl_uString_release( ustrPath ); 112 113 if ( ustrFile ) 114 rtl_uString_release( ustrFile ); 115 116 return error; 117 } 118 119 120