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/******
* fileio.cc
* Tom Prince and John Bowman 2004/08/10
*
* Handle input/output
******/
#include "fileio.h"
#include "settings.h"
namespace camp {
string tab="\t";
string newline="\n";
ofile Stdout("");
file nullfile("",false,NOMODE,false,true);
void ifile::ignoreComment()
{
if(comment == 0) return;
int c;
bool eol=(stream->peek() == '\n');
if(eol && csvmode && nullfield) return;
for(;;) {
while(isspace(c=stream->peek())) {
stream->ignore();
whitespace += (char) c;
}
if(c == comment) {
whitespace="";
while((c=stream->peek()) != '\n' && c != EOF)
stream->ignore();
if(c == '\n')
stream->ignore();
} else {if(eol) stream->unget(); return;}
}
}
bool ifile::eol()
{
int c;
while(isspace(c=stream->peek())) {
if(c == '\n') return true;
else {
stream->ignore();
whitespace += (char) c;
}
}
return false;
}
bool ifile::nexteol()
{
int c;
if(nullfield) {
nullfield=false;
return true;
}
while(isspace(c=stream->peek())) {
if(c == '\n' && comma) {
nullfield=true;
return false;
}
stream->ignore();
if(c == '\n') {
while(isspace(c=stream->peek())) {
if(c == '\n') {nullfield=true; return true;}
else {
stream->ignore();
whitespace += (char) c;
}
}
return true;
}
else whitespace += (char) c;
}
return false;
}
void ifile::csv()
{
comma=false;
nullfield=false;
if(!csvmode || stream->eof()) return;
std::ios::iostate rdstate=stream->rdstate();
if(stream->fail()) stream->clear();
int c=stream->peek();
if(c == ',') stream->ignore();
else if(c == '\n') {
stream->ignore();
if(linemode && stream->peek() != EOF) stream->unget();
} else stream->clear(rdstate);
if(c == ',') comma=true;
}
void ifile::Read(string& val)
{
string s;
if(wordmode) {
whitespace="";
while(isspace(stream->peek())) stream->ignore();
}
if(csvmode || wordmode) {
bool quote=false;
while(stream->good()) {
int c=stream->peek();
if(c == '"') {quote=!quote; stream->ignore(); continue;}
if(!quote) {
if(comment && c == comment) {
while((c=stream->peek()) != '\n' && c != EOF)
stream->ignore();
if(s.empty() && c == '\n') {
stream->ignore();
continue;
}
}
if(csvmode && (c == ',' || c == '\n'))
break;
if(wordmode && isspace(c))
break;
}
s += (char) stream->get();
}
} else
getline(*stream,s);
if(comment) {
size_t p=0;
while((p=s.find(comment,p)) < string::npos) {
if(p+1 < s.length() && s[p+1] == comment) {
s.erase(p,1);
++p;
} else {
s.erase(p);
break;
}
}
}
val=whitespace+s;
}
void ofile::writeline()
{
if(standard && interact::query && !vm::indebugger) {
Int scroll=settings::getScroll();
if(scroll && interact::lines > 0 && interact::lines % scroll == 0) {
for(;;) {
if(!cin.good()) {
*stream << newline;
cin.clear();
break;
}
int c=cin.get();
if(c == '\n') break;
// Discard any additional characters
while(cin.good() && cin.get() != '\n');
if(c == 's') {interact::query=false; break;}
if(c == 'q') {interact::query=false; interact::lines=0; throw quit();}
}
} else *stream << newline;
++interact::lines;
} else *stream << newline;
if(errorstream::interrupt) {interact::lines=0; throw interrupted();}
}
} // namespace camp
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