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dc740de4 | 1 | /* $Id$ */ |
2 | ||
f10a1859 | 3 | /************************************************************************** |
4 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * * | |
6 | * Author: The ALICE Off-line Project. * | |
7 | * Contributors are mentioned in the code where appropriate. * | |
8 | * * | |
9 | * Permission to use, copy, modify and distribute this software and its * | |
10 | * documentation strictly for non-commercial purposes is hereby granted * | |
11 | * without fee, provided that the above copyright notice appears in all * | |
12 | * copies and that both the copyright notice and this permission notice * | |
13 | * appear in the supporting documentation. The authors make no claims * | |
14 | * about the suitability of this software for any purpose. It is * | |
15 | * provided "as is" without express or implied warranty. * | |
16 | **************************************************************************/ | |
17 | ||
18 | // This helper macros creates a chain of ESD files for you. Source can be either a text | |
19 | // file with the file paths or a directory. In the latter case all ESD files in all subdirectories | |
20 | // are considered. | |
21 | // | |
22 | // Author: Jan.Fiete.Grosse-Oetringhaus@cern.ch | |
23 | ||
24 | TChain* CreateESDChain(const char* aDataDir = "ESDfiles.txt", Int_t aRuns = 20, Int_t offset = 0, Bool_t addFileName = kFALSE, Bool_t addFriend = kFALSE, Bool_t check = kFALSE) | |
539b6cb4 | 25 | { |
0ab29cfa | 26 | // creates chain of files in a given directory or file containing a list. |
27 | // In case of directory the structure is expected as: | |
dc740de4 | 28 | // <aDataDir>/<dir0>/AliESDs.root |
dc740de4 | 29 | // <aDataDir>/<dir1>/AliESDs.root |
dc740de4 | 30 | // ... |
f10a1859 | 31 | // |
32 | // if addFileName is true the list only needs to contain the directories that contain the AliESDs.root files | |
33 | // if addFriend is true a file AliESDfriends.root is expected in the same directory and added to the chain as friend | |
dc740de4 | 34 | |
539b6cb4 | 35 | if (!aDataDir) |
36 | return 0; | |
37 | ||
0ab29cfa | 38 | Long_t id, size, flags, modtime; |
39 | if (gSystem->GetPathInfo(aDataDir, &id, &size, &flags, &modtime)) | |
40 | { | |
bdfe2916 | 41 | printf("%s not found.\n", aDataDir); |
0ab29cfa | 42 | return 0; |
43 | } | |
44 | ||
539b6cb4 | 45 | TChain* chain = new TChain("esdTree"); |
f10a1859 | 46 | TChain* chainFriend = 0; |
47 | ||
48 | if (addFriend) | |
49 | chainFriend = new TChain("esdFriendTree"); | |
539b6cb4 | 50 | |
0ab29cfa | 51 | if (flags & 2) |
539b6cb4 | 52 | { |
0ab29cfa | 53 | TString execDir(gSystem->pwd()); |
54 | TSystemDirectory* baseDir = new TSystemDirectory(".", aDataDir); | |
55 | TList* dirList = baseDir->GetListOfFiles(); | |
56 | Int_t nDirs = dirList->GetEntries(); | |
57 | gSystem->cd(execDir); | |
539b6cb4 | 58 | |
0ab29cfa | 59 | Int_t count = 0; |
dc740de4 | 60 | |
0ab29cfa | 61 | for (Int_t iDir=0; iDir<nDirs; ++iDir) |
62 | { | |
63 | TSystemFile* presentDir = (TSystemFile*) dirList->At(iDir); | |
64 | if (!presentDir || !presentDir->IsDirectory() || strcmp(presentDir->GetName(), ".") == 0 || strcmp(presentDir->GetName(), "..") == 0) | |
65 | continue; | |
49dc84d9 | 66 | |
0ab29cfa | 67 | if (offset > 0) |
68 | { | |
69 | --offset; | |
70 | continue; | |
71 | } | |
539b6cb4 | 72 | |
0ab29cfa | 73 | if (count++ == aRuns) |
74 | break; | |
539b6cb4 | 75 | |
0ab29cfa | 76 | TString presentDirName(aDataDir); |
77 | presentDirName += "/"; | |
78 | presentDirName += presentDir->GetName(); | |
37dbb69e | 79 | |
0ab29cfa | 80 | chain->Add(presentDirName + "/AliESDs.root/esdTree"); |
81 | } | |
82 | } | |
83 | else | |
84 | { | |
85 | // Open the input stream | |
86 | ifstream in; | |
87 | in.open(aDataDir); | |
dc740de4 | 88 | |
0ab29cfa | 89 | Int_t count = 0; |
37dbb69e | 90 | |
0ab29cfa | 91 | // Read the input list of files and add them to the chain |
f10a1859 | 92 | TString line; |
93 | while(in.good()) | |
94 | { | |
95 | in >> line; | |
96 | ||
97 | if (line.Length() == 0) | |
98 | continue; | |
99 | ||
0ab29cfa | 100 | if (offset > 0) |
101 | { | |
102 | --offset; | |
103 | continue; | |
104 | } | |
37dbb69e | 105 | |
0ab29cfa | 106 | if (count++ == aRuns) |
107 | break; | |
37dbb69e | 108 | |
f10a1859 | 109 | TString esdFile(line); |
110 | ||
111 | if (addFileName) | |
112 | esdFile += "/AliESDs.root"; | |
113 | ||
114 | TString esdFileFriend(esdFile); | |
115 | esdFileFriend.ReplaceAll("AliESDs.root", "AliESDfriends.root"); | |
116 | ||
117 | if (check) | |
118 | { | |
119 | TFile* file = TFile::Open(esdFile); | |
120 | if (!file) | |
121 | continue; | |
122 | file->Close(); | |
123 | ||
124 | if (chainFriend) | |
125 | { | |
126 | TFile* file = TFile::Open(esdFileFriend); | |
127 | if (!file) | |
128 | continue; | |
129 | file->Close(); | |
130 | } | |
131 | ||
132 | printf("%s\n", line.Data()); | |
133 | } | |
134 | ||
0ab29cfa | 135 | // add esd file |
f10a1859 | 136 | chain->Add(esdFile); |
137 | ||
138 | // add file | |
139 | if (chainFriend) | |
140 | chainFriend->Add(esdFileFriend); | |
16e24ca3 | 141 | } |
142 | ||
0ab29cfa | 143 | in.close(); |
37dbb69e | 144 | } |
f10a1859 | 145 | |
146 | if (chainFriend) | |
147 | chain->AddFriend(chainFriend); | |
37dbb69e | 148 | |
37dbb69e | 149 | return chain; |
150 | } | |
7f8cf861 | 151 | |
152 | void LookupWrite(TChain* chain, const char* target) | |
153 | { | |
154 | // looks up the chain and writes the remaining files to the text file target | |
155 | ||
156 | chain->Lookup(); | |
157 | ||
158 | TObjArray* list = chain->GetListOfFiles(); | |
159 | TIterator* iter = list->MakeIterator(); | |
160 | TObject* obj = 0; | |
161 | ||
162 | ofstream outfile; | |
163 | outfile.open(target); | |
164 | ||
165 | while ((obj = iter->Next())) | |
f10a1859 | 166 | outfile << obj->GetTitle() << endl; |
7f8cf861 | 167 | |
168 | outfile.close(); | |
169 | ||
170 | delete iter; | |
171 | } |