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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2006 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
/*! \file flatom_pr.cpp
\brief Definitions for printing and scanning the t_atom type.
*/
#include "flext.h"
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
// \TODO take bufsz into account!
bool flext::PrintAtom(const t_atom &a,char *buf,size_t bufsz)
{
bool ok = true;
if(IsFloat(a)) {
ok = STD::snprintf(buf,bufsz,"%g",GetFloat(a)) > 0;
}
else if(IsInt(a)) {
ok = STD::snprintf(buf,bufsz,"%i",GetInt(a)) > 0;
}
else if(IsSymbol(a)) {
if(!FLEXT_ASSERT(GetSymbol(a)))
*buf = 0;
else {
const char *c = GetString(a);
size_t len = strlen(c);
if(len < bufsz) {
memcpy(buf,c,len); buf[len] = 0;
ok = true;
}
else
ok = false;
}
}
#if FLEXT_SYS == FLEXT_SYS_PD
#ifndef FLEXT_COMPATIBLE
else if(IsPointer(a)) {
ok = STD::snprintf(buf,bufsz,"%p",GetPointer(a)) > 0;
}
#endif
else if(a.a_type == A_DOLLAR) {
ok = STD::snprintf(buf,bufsz,"$%d",a.a_w.w_index) > 0;
}
else if(a.a_type == A_DOLLSYM) {
ok = STD::snprintf(buf,bufsz,"$%s",GetString(a)) > 0;
}
#elif FLEXT_SYS == FLEXT_SYS_MAX
else if(a.a_type == A_DOLLAR) {
ok = STD::snprintf(buf,bufsz,"$%d",a.a_w.w_long) > 0;
}
#else
//#pragma message("Not implemented")
#endif
else {
error("flext: atom type unknown");
ok = false;
}
return ok;
}
bool flext::PrintList(int argc,const t_atom *argv,char *buf,size_t bufsz)
{
bool ok = true;
for(int i = 0; ok && i < argc && bufsz > 0; ++i) {
if(i) { *(buf++) = ' '; --bufsz; } // prepend space
if(PrintAtom(argv[i],buf,bufsz)) {
size_t len = strlen(buf);
buf += len,bufsz -= len;
}
else
ok = false;
}
*buf = 0;
return ok;
}
const char *flext::ScanAtom(t_atom &a,const char *c)
{
// skip leading whitespace
while(*c && isspace(*c)) ++c;
if(!*c) return NULL;
// go to next space and save character
char *end = const_cast<char *>(c);
while(*end && !isspace(*end)) ++end;
char sv = *end;
float fres;
// first try float
char *endp;
// see if it's a float - thanks to Frank Barknecht
fres = (float)strtod(c,&endp);
if(!*c && endp != c) {
int ires = (int)fres; // try a cast
if(fres == ires)
SetInt(a,ires);
else
SetFloat(a,fres);
}
// no, it's a symbol
else
SetString(a,c);
*end = sv;
return c;
}
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