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/**
* $Id: dump.cc 22454 2019-08-31 19:53:40Z yeti-dn $
* Gwyddion plug-in proxy dump file handling.
* Written by Yeti <yeti@gwyddion.net>. Public domain.
**/
#include <dump.hh>
#include <fstream>
#include <iostream>
#include <cstdlib>
#include <cstring>
using namespace std;
/***************** DataField **********************/
DataField::DataField(unsigned long int xres_, unsigned long int yres_)
{
xres = xres_;
yres = yres_;
data = new double [xres*yres];
xreal = 0.0;
yreal = 0.0;
xyunits = string("");
zunits = string("");
}
DataField::DataField(const DataField &dfield)
{
xres = dfield.xres;
yres = dfield.yres;
data = new double [xres*yres];
memcpy(data, dfield.data, xres*yres*sizeof(double));
xreal = dfield.xreal;
yreal = dfield.yreal;
xyunits = string(dfield.xyunits);
zunits = string(dfield.zunits);
}
DataField::~DataField()
{
delete [] data;
}
/***************** Dump **********************/
bool
Dump::read(const char *filename)
{
typedef pair<string,string> MetaValue;
typedef pair<string,DataField> DataValue;
meta.clear();
data.clear();
ifstream fh(filename, ifstream::in | ifstream::binary);
if (!fh)
return false;
int lineno = 0;
const unsigned long int buf_len = 4096;
char line_buf[buf_len];
char b;
while (fh.good() && !fh.eof()) {
string line("");
lineno++;
/* read a line, no matter how long */
unsigned long int appended;
do {
if (!fh.getline(line_buf, buf_len)) {
if (fh.eof() && !line.size())
return true;
cerr << "Cannot read line #" << lineno << endl;
meta.clear();
data.clear();
return false;
}
appended = line.size();
line.append(line_buf);
appended = line.size() - appended;
} while (appended == buf_len - 1);
unsigned long int eqpos = line.find('=');
if (line.empty())
continue;
if (line[0] != '/' || eqpos == string::npos) {
cerr << "Invalid line #" << lineno << endl;
meta.clear();
data.clear();
return false;
}
MetaValue value = MetaValue(string(line, 0, eqpos),
string(line, eqpos + 1));
/* metadata */
if (value.second != "[") {
meta.insert(value);
continue;
}
/* datafield */
if ((b = fh.get()) != '[') {
fh.putback(b);
continue;
}
{
map<string,string>::iterator iter;
if ((iter = meta.find(value.first + "/xres")) == meta.end()) {
cerr << "No data field " << value.first << " x-resolution"
<< endl;
meta.clear();
data.clear();
return false;
}
unsigned long int xres = atoi(iter->second.c_str());
meta.erase(iter);
if ((iter = meta.find(value.first + "/yres")) == meta.end()) {
cerr << "No data field " << value.first << " y-resolution"
<< endl;
meta.clear();
data.clear();
return false;
}
unsigned long int yres = atoi(iter->second.c_str());
meta.erase(iter);
unsigned long int size = xres*yres*sizeof(double);
DataField dfield = DataField(xres, yres);
unsigned long int n = 0;
do {
n += fh.readsome(((char*)dfield.data) + n, size - n);
} while (n < size && !fh.eof() && fh.good());
if (n < size) {
cerr << "Truncated data field" << endl;
meta.clear();
data.clear();
return false;
}
if (fh.get() != ']' || fh.get() != ']' || fh.get() != '\n') {
cerr << "Missed end of data field" << endl;
meta.clear();
data.clear();
return false;
}
if ((iter = meta.find(value.first + "/xreal")) != meta.end()) {
dfield.xreal = strtod(iter->second.c_str(), NULL);
meta.erase(iter);
}
if ((iter = meta.find(value.first + "/yreal")) != meta.end()) {
dfield.yreal = strtod(iter->second.c_str(), NULL);
meta.erase(iter);
}
if ((iter = meta.find(value.first + "/unit-xy")) != meta.end()) {
dfield.xyunits = iter->second;
meta.erase(iter);
}
if ((iter = meta.find(value.first + "/unit-z")) != meta.end()) {
dfield.zunits = iter->second;
meta.erase(iter);
}
data.insert(DataValue(value.first, dfield));
}
}
{
bool ok = fh.eof();
fh.close();
return ok;
}
}
bool
Dump::write(const char *filename)
{
ofstream fh(filename, ifstream::out | ifstream::binary);
if (!fh)
return false;
{
for (map<string,string>::iterator iter = meta.begin();
iter != meta.end();
iter++)
fh << iter->first << "=" << iter->second << endl;
}
for (map<string,DataField>::iterator iter = data.begin();
iter != data.end();
iter++) {
fh << iter->first << "/xres=" << iter->second.xres << endl;
fh << iter->first << "/yres=" << iter->second.yres << endl;
if (iter->second.xreal > 0.0)
fh << iter->first << "/xreal=" << iter->second.xreal << endl;
if (iter->second.yreal > 0.0)
fh << iter->first << "/yreal=" << iter->second.yreal << endl;
if (iter->second.xyunits.size())
fh << iter->first << "/units-xy=" << iter->second.xyunits << endl;
if (iter->second.zunits.size())
fh << iter->first << "/units-z=" << iter->second.zunits << endl;
fh << iter->first << "=[" << endl;
fh.put('[');
unsigned long int size = iter->second.xres * iter->second.yres
* sizeof(double);
fh.write(((char*)iter->second.data), size);
fh << "]]" << endl;
}
fh.close();
return true;
}
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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