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
osl_defCalcTextWidth(rtl_uString * ustrText)27 static sal_uInt32 SAL_CALL osl_defCalcTextWidth( rtl_uString *ustrText )
28 {
29 return ustrText ? ustrText->length : 0;
30 }
31
32
osl_abbreviateSystemPath(rtl_uString * ustrSystemPath,rtl_uString ** pustrCompacted,sal_uInt32 uMaxWidth,oslCalcTextWidthFunc pfnCalcWidth)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