wsdlpull  1.23
ConfigFile.cpp
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1 // ConfigFile.cpp
2 
3 #include "ConfigFile.h"
4 
5 using std::string;
6 
7 ConfigFile::ConfigFile( string filename, bool isList,string delimiter,
8  string comment, string sentry )
9  : myDelimiter(delimiter), myComment(comment), mySentry(sentry),file(filename),listmode(isList)
10 {
11  // Construct a ConfigFile, getting keys and values from given file
12 
13  std::ifstream in( filename.c_str() );
14 
15  if( !in ) throw file_not_found( filename );
16 
17  in >> (*this);
18 }
19 
20 
22  : myDelimiter( string(1,'=') ), myComment( string(2,'#') ),listmode(false)
23 {
24  // Construct a ConfigFile without a file; empty
25 }
26 
27 // Construct the ConfigFile from a given file if its present
28 void ConfigFile::load(string filename,bool isList)
29 {
30  file=filename;
31  listmode=isList;
32  std::ifstream in( filename.c_str() );
33  if( in )
34  in>>(*this);
35  in.close();
36 }
37 
38 // Save the ConfigFile into a given file
40 {
41  std::ofstream out( file.c_str() );
42  if( !out ) throw file_not_found( file );
43  out<<(*this);
44  out.close();
45 }
46 
47 void ConfigFile::remove( const string& key )
48 {
49  // Remove key and its value
50  myContents.erase( myContents.find( key ) );
51  return;
52 }
53 
54 
55 bool ConfigFile::keyExists( const string& key ) const
56 {
57  // Indicate whether key is found
58  mapci p = myContents.find( key );
59  return ( p != myContents.end() );
60 }
61 
62 
63 /* static */
64 void ConfigFile::trim( string& s )
65 {
66  // Remove leading and trailing whitespace
67  static const char whitespace[] = " \n\t\v\r\f";
68  s.erase( 0, s.find_first_not_of(whitespace) );
69  s.erase( s.find_last_not_of(whitespace) + 1U );
70 }
71 
72 
73 std::ostream& operator<<( std::ostream& os, const ConfigFile& cf )
74 {
75  // Save a ConfigFile to os
76  for( ConfigFile::mapci p = cf.myContents.begin();
77  p != cf.myContents.end();
78  ++p )
79  {
80  os << p->first << " " ;
81  if(!cf.listmode)
82  {
83  os<<cf.myDelimiter << " ";
84  os << p->second ;
85  }
86  os<<std::endl;
87  }
88  return os;
89 }
90 
91 
92 std::istream& operator>>( std::istream& is, ConfigFile& cf )
93 {
94  // Load a ConfigFile from is
95  // Read in keys and values, keeping internal whitespace
96  typedef string::size_type pos;
97  const string& delim = cf.myDelimiter; // separator
98  const string& comm = cf.myComment; // comment
99  const string& sentry = cf.mySentry; // end of file sentry
100  const pos skip = delim.length(); // length of separator
101 
102  string nextline = ""; // might need to read ahead to see where value ends
103 
104  while( is || nextline.length() > 0 )
105  {
106  // Read an entire line at a time
107  string line;
108  if( nextline.length() > 0 )
109  {
110  line = nextline; // we read ahead; use it now
111  nextline = "";
112  }
113  else
114  {
115  std::getline( is, line );
116  }
117 
118  // Ignore comments
119  line = line.substr( 0, line.find(comm) );
120 
121  // Check for end of file sentry
122  if( sentry != "" && line.find(sentry) != string::npos ) return is;
123 
124  // Parse the line if it contains a delimiter
125  pos delimPos = line.find( delim );
126  if( delimPos < string::npos )
127  {
128  // Extract the key
129  string key = line.substr( 0, delimPos );
130  line.replace( 0, delimPos+skip, "" );
131 
132  // See if value continues on the next line
133  // Stop at blank line, next line with a key, end of stream,
134  // or end of file sentry
135  bool terminate = false;
136  while( !terminate && is )
137  {
138  std::getline( is, nextline );
139  terminate = true;
140 
141  string nlcopy = nextline;
142  ConfigFile::trim(nlcopy);
143  if( nlcopy == "" ) continue;
144 
145  nextline = nextline.substr( 0, nextline.find(comm) );
146  if( nextline.find(delim) != string::npos )
147  continue;
148  if( sentry != "" && nextline.find(sentry) != string::npos )
149  continue;
150 
151  nlcopy = nextline;
152  ConfigFile::trim(nlcopy);
153  if( nlcopy != "" ) line += "\n";
154  line += nextline;
155  terminate = false;
156  }
157 
158  // Store key and value
159  ConfigFile::trim(key);
160  ConfigFile::trim(line);
161  cf.myContents[key] = line; // overwrites if key is repeated
162  }
163  else if(cf.listmode)
164  {
165  ConfigFile::trim(line);
166  cf.myContents[line]=" ";
167  }
168  }
169 
170  return is;
171 }
string mySentry
Definition: ConfigFile.h:59
std::map< string, string >::const_iterator mapci
Definition: ConfigFile.h:63
static void trim(string &s)
Definition: ConfigFile.cpp:64
void save()
Definition: ConfigFile.cpp:39
void remove(const string &key)
Definition: ConfigFile.cpp:47
std::string file
Definition: ConfigFile.h:64
std::ostream & operator<<(std::ostream &os, const ConfigFile &cf)
Definition: ConfigFile.cpp:73
std::istream & operator>>(std::istream &is, ConfigFile &cf)
Definition: ConfigFile.cpp:92
std::map< string, string > myContents
Definition: ConfigFile.h:60
bool listmode
Definition: ConfigFile.h:65
string myDelimiter
Definition: ConfigFile.h:57
string myComment
Definition: ConfigFile.h:58
void load(string filename, bool isList=false)
Definition: ConfigFile.cpp:28
bool keyExists(const string &key) const
Definition: ConfigFile.cpp:55