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#include <fstream.h>
#include "assoc.hh"
#include "dstream.hh"
#include "string.hh"
#include "textdb.hh"
/// indent of each level
const INDTAB = 3;
/*
should use Regexp library.
*/
static String
strip_pretty(String pret)
{
String cl(pret.left(pret.pos('(')-1));
int l = cl.lastPos(' ');
cl = cl.right(cl.len() -l);
return cl;
}
static String
strip_member(String pret)
{
String cl(pret.left(pret.lastPos(':')-2));
return cl;
}
Dstream&
Dstream::identify_as(String name)
{
if (!os)
return *this;
String mem(strip_pretty(name));
String cl(strip_member(mem));
String idx = cl;
if (silent->elt_query(mem))
idx = mem;
else if (silent->elt_query(cl))
idx = cl;
else {
(*silent)[idx] = false;
}
local_silence = (*silent)[idx];
if (classname != idx && !local_silence) {
classname=idx;
*os << "[" << classname << ":]";
}
return *this;
}
bool
Dstream::silence(String s)
{
if (!silent->elt_query(s))
return false;
return (*silent)[s];
}
///
Dstream &
Dstream::operator<<(String s)
{
if (local_silence|| !os)
return *this;
for (const char *cp = s ; *cp; cp++)
switch(*cp)
{
case '{':
case '[':
case '(': indentlvl += INDTAB;
*os << *cp;
break;
case ')':
case ']':
case '}':
indentlvl -= INDTAB;
*os << *cp ;
assert (indentlvl>=0) ;
break;
case '\n':
*os << '\n' << String (' ', indentlvl) << flush;
break;
default:
*os << *cp;
break;
}
return *this;
}
/** only output possibility. Delegates all conversion to String class.
*/
Dstream::Dstream(ostream *r, const char * cfg_nm )
{
os = r;
silent = new Assoc<String,bool>;
if (!os)
return;
indentlvl = 0;
const char * fn =cfg_nm ? cfg_nm : ".dstreamrc";
{
ifstream ifs(fn); // can't open
if (!ifs)
return;
}
Text_db cfg(fn);
while (! cfg.eof()){
Text_record r( cfg++);
assert(r.sz() == 2);
(*silent)[r[0]] = r[1].to_bool();
}
}
Dstream::~Dstream()
{
delete silent;
}
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