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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | // Authors: David Guez, Ivana Hrivnacova, Marion MacCormick; IPN Orsay | |
19 | // | |
20 | // Class AliMUONIniReader | |
21 | // ---------------------- | |
22 | // General class to read data in ASCII file format, | |
23 | // similar to the Windows ".ini" files (a set of sections tagged by a | |
24 | // [ sectionName ] | |
25 | // and values defined in the way: | |
26 | // parameterName = value | |
27 | // | |
28 | // comment lines can be introduced if the first non-blank character | |
29 | // is either ';' or '#' | |
30 | // Included in AliRoot 2003/01/28 | |
31 | ||
32 | #if !defined(__HP_aCC) && !defined(__alpha) | |
33 | #include <sstream> | |
34 | #endif | |
35 | ||
36 | #include <Riostream.h> | |
37 | #include <Rstrstream.h> | |
38 | ||
39 | #include "AliMUONSt1IniReader.h" | |
40 | ||
41 | //______________________________________________________________________ | |
42 | AliMUONSt1IniReader::AliMUONSt1IniReader() | |
43 | :fFile(),fCurrentType(kUndef),fEndOfFile(true) | |
44 | { | |
45 | // default constructor | |
46 | // --- | |
47 | } | |
48 | ||
49 | //______________________________________________________________________ | |
50 | AliMUONSt1IniReader::AliMUONSt1IniReader(string fileName) | |
51 | { | |
52 | // normal constructor | |
53 | // --- | |
54 | ||
55 | fFile.open(fileName.c_str()); | |
56 | if (!fFile) {cerr<<"Unable to open file "<<fileName<<endl;} | |
57 | fEndOfFile = !fFile.good(); | |
58 | fCurrentType=kUndef; | |
59 | } | |
60 | ||
61 | //______________________________________________________________________ | |
62 | AliMUONSt1IniReader::~AliMUONSt1IniReader() | |
63 | { | |
64 | //destructor | |
65 | fFile.close(); | |
66 | } | |
67 | ||
68 | //______________________________________________________________________ | |
69 | void AliMUONSt1IniReader::Reset() | |
70 | { | |
71 | // Reset the input stream. The file can be re-read after calling this function | |
72 | // --- | |
73 | ||
74 | fFile.clear(); | |
75 | fFile.seekg(0,ios::beg); | |
76 | fCurrentType=kUndef; | |
77 | fEndOfFile=!fFile.good(); | |
78 | } | |
79 | ||
80 | //______________________________________________________________________ | |
81 | bool AliMUONSt1IniReader::ReadNextLine() | |
82 | { | |
83 | // The main function of this class. | |
84 | // Read next line in the file and set CurrentType(), CurrentName() and | |
85 | // CurrentValue() with the line's content | |
86 | // --- | |
87 | ||
88 | if ( (!fFile) || (fFile.eof()) || (!fFile.good()) ) | |
89 | {fEndOfFile=true; fCurrentType=kUndef; return false;} | |
90 | ||
91 | string line; | |
92 | getline(fFile,line); | |
93 | if ( line.empty()) { // this is a blank line | |
94 | return ReadNextLine(); | |
95 | } | |
96 | #if defined (__HP_aCC) || (__alpha) | |
97 | strstream l; | |
98 | l << line; | |
99 | #else | |
100 | istringstream l(line); | |
101 | #endif | |
102 | ||
103 | char c; | |
104 | ||
105 | l>>c; | |
106 | if ( (c==';') || (c=='#') ) { // this is a comment | |
107 | return ReadNextLine(); | |
108 | } | |
109 | ||
110 | if (c=='[') { // this is a chapter name | |
111 | getline(l,fCurrentName,']'); | |
112 | fCurrentName=Trail(fCurrentName); | |
113 | fCurrentType=kChapter; | |
114 | return true; | |
115 | } else { | |
116 | if (line.find_first_of("=") != string::npos ) { | |
117 | l.putback(c); | |
118 | getline(l,fCurrentName,'='); | |
119 | fCurrentName = Trail(fCurrentName); | |
120 | ||
121 | getline(l,fCurrentValue); | |
122 | fCurrentValue = Trail(fCurrentValue); | |
123 | fCurrentType=kValue; | |
124 | return true; | |
125 | } else { | |
126 | cerr<<"Warning, badly formated line..."<<line<<endl; | |
127 | fCurrentType=kUndef; | |
128 | return false; | |
129 | } | |
130 | } | |
131 | // fCurrentType=kUndef; | |
132 | // return false; | |
133 | // unreachable | |
134 | } | |
135 | ||
136 | //______________________________________________________________________ | |
137 | AliMUONSt1IniReader::ValueList AliMUONSt1IniReader::MakeCurrentValueList() | |
138 | { | |
139 | // Read the next lines in the file | |
140 | // until eof() or a new section is found. | |
141 | // Return the list of (name,value) pairs read. | |
142 | // --- | |
143 | ||
144 | ValueList ans; | |
145 | while (true){ | |
146 | if (fCurrentType==kValue){ | |
147 | ans.push_back( ValuePair(fCurrentName,fCurrentValue)); | |
148 | } else break; | |
149 | ReadNextLine(); | |
150 | } | |
151 | return ans; | |
152 | } | |
153 | ||
154 | //______________________________________________________________________ | |
155 | AliMUONSt1IniReader::Chapter AliMUONSt1IniReader::MakeCurrentChapter() | |
156 | { | |
157 | // Searches in the rest file for a new section | |
158 | // and return it's name and the list of (name,value) pairs in it | |
159 | // --- | |
160 | ||
161 | while ((!Eof()) && (fCurrentType != kChapter)) ReadNextLine(); | |
162 | if (Eof()) return Chapter(); | |
163 | string name = fCurrentName; | |
164 | ReadNextLine(); | |
165 | return Chapter(name,MakeCurrentValueList()); | |
166 | } | |
167 | ||
168 | //______________________________________________________________________ | |
169 | AliMUONSt1IniReader::ChapterList AliMUONSt1IniReader::MakeChapterList() | |
170 | { | |
171 | // Read the rest of the file and return all the chapter names and | |
172 | // (name,value) pair lists found after the current position | |
173 | // --- | |
174 | ||
175 | ChapterList ans; | |
176 | while (true) { | |
177 | if (fCurrentType==kChapter) { | |
178 | string s= fCurrentName; | |
179 | ReadNextLine(); | |
180 | //ans.insert(Chapter(s,MakeCurrentValueList())); | |
181 | // does not compile on SunOS | |
182 | ans.insert(ChapterList::value_type(s,MakeCurrentValueList())); | |
183 | } else ReadNextLine(); | |
184 | if (fEndOfFile) break; | |
185 | } | |
186 | return ans; | |
187 | } | |
188 | ||
189 | //______________________________________________________________________ | |
190 | string AliMUONSt1IniReader::Trail(const string& s) const | |
191 | { | |
192 | // Utility function: clear the blanks before and after the string <s> | |
193 | // --- | |
194 | ||
195 | string::size_type p1=s.find_first_not_of(" "); | |
196 | if (p1==string::npos) return ""; | |
197 | string::size_type p2=s.find_last_not_of(" "); | |
198 | return s.substr(p1,p2-p1+1); | |
199 | } |