itextstream: Make operator bool() fail if all bound fields weren't read

Make it easier to detect malformed input files (e.g., those missing columns).

galaxy.kdevelop

@@ -22,7 +22,7 @@
   <kdevautoproject>
     <general>
       <activetarget>src/galfast.x</activetarget>
-      <useconfiguration>debug</useconfiguration>
+      <useconfiguration>optimized</useconfiguration>
     </general>
     <run>
       <mainprogram>/home/mjuric/projects/galaxy/debug/src/galfast.x</mainprogram>
@@ -79,16 +79,16 @@
         <ccompiler>kdevgccoptions</ccompiler>
         <cxxcompiler>kdevgppoptions</cxxcompiler>
         <f77compiler>kdevg77options</f77compiler>
-        <cxxflags>-O2 -g</cxxflags>
-        <configargs>--enable-debug=full --prefix=$HOME/projects/galaxy/workspace/staging --with-cuda --enable-cuda-devemu --with-libpeyton=$HOME/projects/libpeyton --with-libpeyton-libdir=$HOME/projects/libpeyton/lib-optimized</configargs>
-        <topsourcedir/>
+        <cxxflags>-O2 -Wstrict-aliasing -fno-strict-aliasing</cxxflags>
+        <configargs>--with-cuda --enable-cuda-devemuX --with-sm=/usr/local --with-libpeyton=$HOME/projects/libpeyton --prefix=$HOME/projects/galaxy/workspace/staging --with-cfitsio-include=/usr/include/cfitsio --with-libpeyton-libdir=$HOME/projects/libpeyton/lib-optimized</configargs>
+        <topsourcedir></topsourcedir>
         <cppflags>-DDEBUGMODE=0</cppflags>
-        <ldflags/>
-        <ccompilerbinary/>
-        <cxxcompilerbinary/>
-        <f77compilerbinary/>
-        <cflags/>
-        <f77flags/>
+        <ldflags>-rdynamic -L/opt/cudatools/2.3/lib</ldflags>
+        <ccompilerbinary></ccompilerbinary>
+        <cxxcompilerbinary></cxxcompilerbinary>
+        <f77compilerbinary></f77compilerbinary>
+        <cflags></cflags>
+        <f77flags></f77flags>
         <envvars/>
       </optimized>
       <debug>

src/common/textstream.h

@@ -47,11 +47,12 @@ class itextstream : public textstream {
 public:
 	int nread;
 	std::string line;
+	int m_line;
 	bool is_comment;
 public:
 
 public:
-	itextstream(std::istream &f_) : f(f_), nread(0), max_field(0), ret_comments(false) {}
+	itextstream(std::istream &f_) : f(f_), nread(0), max_field(0), ret_comments(false), m_line(0) {}
 
 	void bind(std::string &s, int p) { fields[p] = field(p, s); max_field = std::max(max_field, p); }
 	void bind(double &s, int p) { fields[p] = field(p, s); max_field = std::max(max_field, p); }
@@ -77,7 +78,13 @@ class itextstream : public textstream {
 	}
 
 	bool returncomments(bool rc) { ret_comments = rc; }
-
+
+	void getline(std::istream &is, std::string &str)
+	{
+		std::getline(is, str);
+		m_line++;
+	}
+
 	itextstream &skip(int n = 1)
 	{
 		while(n > 0)
@@ -102,6 +109,7 @@ class itextstream : public textstream {
 	itextstream &next()
 	{
 		nread = -1;
+		is_comment = false;
 		do {
 			getline(f, line);
 //			std::cerr << "LINE: [" << line << "] " << (bool)*this << "\n";
@@ -167,7 +175,11 @@ class itextstream : public textstream {
 		return *this;
 	}*/
 
-	operator bool() { return nread != -1; }
+	int last_line_read() const { return m_line; }
+
+	bool noerror() { return *this || f.eof(); }
+	operator bool() { return iscomment() || (nread == fields.size()); }
+	//operator bool() { return nread != -1; }
 	bool iscomment() { return is_comment; }
 };
 

src/modules/photometry_host.cpp

@@ -182,7 +182,11 @@ bool os_photometry::construct(const Config &cfg, otable &t, opipeline &pipe)
 	{
 		v[FeH].push_back(mc);
 	}
-	assert(!v.empty());
+	if(v.empty() || !in.noerror())
+	{
+		THROW(EAny, "Error reading color-metallicity-magnitude relations from '" + fname + "' around line " + str(in.last_line_read()) 
+			+ ". Is the formatted correctly, and does it contain " + str(2+ncolors) + " columns?");
+	}
 
 #if 1
 	double dFeH, dMr;