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| author | fcolin | 2011-11-18 12:14:12 +0000 |
|---|---|---|
| committer | fcolin | 2011-11-18 12:14:12 +0000 |
| commit | 6bcf419d2e8f739b432d4790d1ba9d48ab65365b (patch) | |
| tree | 92815e16f189c8e328dff4fcfa38ebe1d0217fdd /ARMFCaptureD3D/ConfigFile/ConfigFile.cpp | |
| parent | 487e963b081d7ffe2ddf489e11d927982c9101a6 (diff) | |
| download | amilis-6bcf419d2e8f739b432d4790d1ba9d48ab65365b.zip amilis-6bcf419d2e8f739b432d4790d1ba9d48ab65365b.tar.gz amilis-6bcf419d2e8f739b432d4790d1ba9d48ab65365b.tar.bz2 amilis-6bcf419d2e8f739b432d4790d1ba9d48ab65365b.tar.xz | |
Diffstat (limited to 'ARMFCaptureD3D/ConfigFile/ConfigFile.cpp')
| -rw-r--r-- | ARMFCaptureD3D/ConfigFile/ConfigFile.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/ARMFCaptureD3D/ConfigFile/ConfigFile.cpp b/ARMFCaptureD3D/ConfigFile/ConfigFile.cpp new file mode 100644 index 0000000..f041064 --- /dev/null +++ b/ARMFCaptureD3D/ConfigFile/ConfigFile.cpp @@ -0,0 +1,142 @@ +// ConfigFile.cpp
+
+#include "ConfigFile.h"
+
+using std::string;
+
+ConfigFile::ConfigFile( string filename, string delimiter,
+ string comment, string sentry )
+ : myDelimiter(delimiter), myComment(comment), mySentry(sentry)
+{
+ // Construct a ConfigFile, getting keys and values from given file
+
+ std::ifstream in( filename.c_str() );
+
+ if( !in ) throw file_not_found( filename );
+
+ in >> (*this);
+}
+
+
+ConfigFile::ConfigFile()
+ : myDelimiter( string(1,'=') ), myComment( string(1,'#') )
+{
+ // Construct a ConfigFile without a file; empty
+}
+
+
+void ConfigFile::remove( const string& key )
+{
+ // Remove key and its value
+ myContents.erase( myContents.find( key ) );
+ return;
+}
+
+
+bool ConfigFile::keyExists( const string& key ) const
+{
+ // Indicate whether key is found
+ mapci p = myContents.find( key );
+ return ( p != myContents.end() );
+}
+
+
+/* static */
+void ConfigFile::trim( string& s )
+{
+ // Remove leading and trailing whitespace
+ static const char whitespace[] = " \n\t\v\r\f";
+ s.erase( 0, s.find_first_not_of(whitespace) );
+ s.erase( s.find_last_not_of(whitespace) + 1U );
+}
+
+
+std::ostream& operator<<( std::ostream& os, const ConfigFile& cf )
+{
+ // Save a ConfigFile to os
+ for( ConfigFile::mapci p = cf.myContents.begin();
+ p != cf.myContents.end();
+ ++p )
+ {
+ os << p->first << " " << cf.myDelimiter << " ";
+ os << p->second << std::endl;
+ }
+ return os;
+}
+
+
+std::istream& operator>>( std::istream& is, ConfigFile& cf )
+{
+ // Load a ConfigFile from is
+ // Read in keys and values, keeping internal whitespace
+ typedef string::size_type pos;
+ const string& delim = cf.myDelimiter; // separator
+ const string& comm = cf.myComment; // comment
+ const string& sentry = cf.mySentry; // end of file sentry
+ const pos skip = delim.length(); // length of separator
+
+ string nextline = ""; // might need to read ahead to see where value ends
+
+ while( is || nextline.length() > 0 )
+ {
+ // Read an entire line at a time
+ string line;
+ if( nextline.length() > 0 )
+ {
+ line = nextline; // we read ahead; use it now
+ nextline = "";
+ }
+ else
+ {
+ std::getline( is, line );
+ }
+
+ // Ignore comments
+ line = line.substr( 0, line.find(comm) );
+
+ // Check for end of file sentry
+ if( sentry != "" && line.find(sentry) != string::npos ) return is;
+
+ // Parse the line if it contains a delimiter
+ pos delimPos = line.find( delim );
+ if( delimPos < string::npos )
+ {
+ // Extract the key
+ string key = line.substr( 0, delimPos );
+ line.replace( 0, delimPos+skip, "" );
+
+ // See if value continues on the next line
+ // Stop at blank line, next line with a key, end of stream,
+ // or end of file sentry
+ bool terminate = false;
+ while( !terminate && is )
+ {
+ std::getline( is, nextline );
+ terminate = true;
+
+ string nlcopy = nextline;
+ ConfigFile::trim(nlcopy);
+ if( nlcopy == "" ) continue;
+
+ nextline = nextline.substr( 0, nextline.find(comm) );
+ if( nextline.find(delim) != string::npos )
+ continue;
+ if( sentry != "" && nextline.find(sentry) != string::npos )
+ continue;
+
+ nlcopy = nextline;
+ ConfigFile::trim(nlcopy);
+ if( nlcopy != "" ) line += "\n";
+ line += nextline;
+ terminate = false;
+ }
+
+ // Store key and value
+ ConfigFile::trim(key);
+ ConfigFile::trim(line);
+ cf.myContents[key] = line; // overwrites if key is repeated
+ }
+ }
+
+ return is;
+}
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