Text and Binary readers

lib/serialisation/TextIO.h

@@ -0,0 +1,147 @@
+#ifndef GRID_SERIALISATION_TEXT_READER_H
+#define GRID_SERIALISATION_TEXT_READER_H
+
+#include <iostream>
+#include <iomanip>
+#include <fstream>
+#include <sstream>
+#include <math.h>
+#include <vector>
+#include <cassert>
+
+namespace Grid {
+
+class TextWriter  {
+private:
+
+  std::ofstream file;
+  int level;
+  void indent(void) {
+    for(int i=0;i<level;i++){
+      file <<"\t";
+    }
+  }
+public:
+
+  TextWriter(const std::string &_file) : file(_file,std::ios::out) {
+    level=0;
+  }
+
+  ~TextWriter()  {  }
+
+  void push(const std::string &s)
+  {
+    //    std::string tmp = s;
+    //    iwrite(s,tmp);
+    level++;
+  }
+  void pop(void) {
+    level--;
+  }
+
+  void iwrite( const std::string& s,const std::string &output      ) { 
+    indent();
+    file<<output<<std::endl;
+  };
+  void iwrite( const std::string& s,  int16_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s, uint16_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s,  int32_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s, uint32_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s,  int64_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s, uint64_t    output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s,  float      output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s, double      output      ) { writeInternal(s,output); };
+  void iwrite( const std::string& s, bool        output      ) { writeInternal(s,output); };
+
+private:
+
+  template<class T> void writeInternal( const std::string& s, T output ){
+    indent();
+    file << std::boolalpha << output<<std::endl;
+  }
+  
+};
+
+class TextReader {
+private:
+
+  std::ifstream file;
+  int level;
+
+public:
+
+
+ TextReader(const std::string &_file) : file(_file,std::ios::in) { level = 0;};
+
+  ~TextReader()  {  }
+
+  void iread( const std::string& s,std::string &output      ) { 
+    char c='a';
+    for(int i=0;i<level;i++){
+      file.get(c);
+      if ( c != '\t' ) 
+	std::cout << "mismatch on tab "<<c<<" level "<< level<< " i "<< i<<std::endl;
+    }
+    output.clear();
+    std::getline(file,output);
+  };
+  void push(const std::string &s)  { 
+    //  std::string tmp; iread(s,tmp); 
+    level++;
+  }
+  void pop(void) { level--; }
+
+  template<class T>
+  void iread( const std::string& s, std::vector<T>  &output      ) { 
+    
+    push(s);
+
+    uint64_t n; iread("N",n);
+
+    // skip the vector length
+    T tmp;
+    output.resize(0);
+    for(int i=0;i<n;i++){
+      std::ostringstream oss;      oss << "elem" << i;
+      read(*this,oss.str(),tmp);
+      output.push_back(tmp);
+    }
+
+    pop();
+
+  };
+
+  void iread( const std::string& s,  int16_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s, uint16_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s,  int32_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s, uint32_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s,  int64_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s, uint64_t  &output      ) { readInternal(s,output); };
+  void iread( const std::string& s,  float    &output      ) { readInternal(s,output); };
+  void iread( const std::string& s, double    &output      ) { readInternal(s,output); };
+  void iread( const std::string& s, bool      &output      ) { readInternal(s,output); };
+
+
+private:
+
+  template<class T> void readInternal( const std::string& path, T &output ){
+    std::string asString;
+    iread(path,asString);
+    convert(asString,output);
+  }
+
+  template<class T> void convert(const std::string &asString,T &output)
+  {
+    std::istringstream is(asString);  is.exceptions(std::ios::failbit);
+    try {
+      is >> std::boolalpha >> output;
+    } catch(std::istringstream::failure e) {
+      std::cerr << "XML read failure on "<<" "<<asString<<" "<<typeid(T).name()<<std::endl;
+    }
+    assert( is.tellg()==-1);
+  }
+  
+};
+
+}
+#endif