add attribute support, fg/bg in progress

c_os/devices/CGA.cc

@@ -117,7 +117,6 @@ void CGA::print(char* string, int n, unsigned char attrib) {
     this->setpos(cursor_x, cursor_y);
 
     // TODO: automatic line breaking, automatic scrolling
-    // TODO: printing doesn't work after first newline character
 }
 
 /*****************************************************************************
@@ -173,4 +172,8 @@ void CGA::clear() {
 unsigned char CGA::attribute(CGA::color bg, CGA::color fg, bool blink) {
 
     /* Hier muess Code eingefuegt werden */
+
+    return blink << 7       // B0000000
+         | (bg & 0x7) << 4  // 0HHH0000
+         | (fg & 0xF);     // 0000VVVV
 }

c_os/devices/CGA_Stream.cc

@@ -24,6 +24,17 @@
  *                  verwendet werden, um eine Ausgabe zu erzwingen.          *
  *****************************************************************************/
 void CGA_Stream::flush() {
-    print(buffer, pos);
+    print(buffer, pos, attribute(this->color_bg, this->color_fg, this->blink));
     pos = 0;
 }
+
+// NOTE: I added this
+// TODO
+// CGA_Stream& CGA_Stream::operator<<(const fgc& fg) {
+//     this->color_fg = fg.fg;
+//     return *this;
+// }
+// CGA_Stream& CGA_Stream::operator<<(const bgc& bg) {
+//     this->color_bg = bg.bg;
+//     return *this;
+// }

c_os/devices/CGA_Stream.h

@@ -18,16 +18,44 @@
 #include "devices/CGA.h"
 #include "lib/OutStream.h"
 
-class CGA_Stream : public OutStream, public CGA {
+// NOTE: I added this
+class fgc {
+public:
+    fgc() : fg(CGA::LIGHT_GREY) {};
+    fgc(CGA::color fg) : fg(fg) {};
+    CGA::color fg;
+};
+class bgc {
+public:
+    bgc() : bg(CGA::BLACK) {};
+    bgc(CGA::color bg) : bg(bg) {};
+    CGA::color bg;
+};
 
+class CGA_Stream : public OutStream, public CGA {
 private:
     CGA_Stream(CGA_Stream& copy);  // Verhindere Kopieren
 
 public:
-    CGA_Stream() : OutStream(), CGA() { flush(); }
+    CGA::color color_fg;
+    CGA::color color_bg;
+    bool blink;
+
+    CGA_Stream() : OutStream(), CGA() {
+        color_fg = CGA::LIGHT_GREY;
+        color_bg = CGA::BLACK;
+        blink = false;
+
+        flush();
+    }
 
     // Methode zur Ausgabe des Pufferinhalts der Basisklasse StringBuffer.
     void flush() override;
+
+    // NOTE: I added this
+    // TODO: Problem: Implementing this here breaks the << chaining
+    // CGA_Stream& operator<<(const fgc&);
+    // CGA_Stream& operator<<(const bgc&);
 };
 
 #endif

c_os/lib/OutStream.h

@@ -24,18 +24,18 @@
 
 #include "lib/StringBuffer.h"
 
-// NOTE: I added this, stream manipulator with argument
-class OutStream;
-
+// NOTE: I added this
+// TODO: I should probably put this inside some FormatStream or sth...
 // TODO: Should this only work for the next << ?
 class fillw {
 public:
+    fillw() : w(0) {};
     fillw(unsigned char w) : w(w) {};
     unsigned char w;
 };
-
 class fillc {
 public:
+    fillc() : c(' ') {};
     fillc(char c) : c(c) {};
     char c;
 };
@@ -58,15 +58,16 @@ public:
     char fill_char;  // fill character for fixed width
 
     OutStream() : StringBuffer() {
-        base = 10;       // initial Dezimalsystem
-        fill_width = 0;  // no fixed width
-        fill_used = 0;
+        base = 10;  // initial Dezimalsystem
+
+        fill_width = 0;   // no fixed width
         fill_char = ' ';  // fill with spaces
+        fill_used = 0;
     }
 
     void flush() override = 0;  // weiterhin undefiniert aber public
 
-    // NOTE: I added this
+    // NOTE: I added this, override put for fixed width
     void put(char c) override;
 
     // OPERATOR << : Umwandlung des angegebenen Datentypes in eine
@@ -90,9 +91,9 @@ public:
     // Darstellung eines Zeigers als hexadezimale ganze Zahl
     OutStream& operator<<(void* ptr);
 
-    // NOTE: I added this, set fixed output width
-    OutStream& operator<<(const fillw& w);
-    OutStream& operator<<(const fillc& c);
+    // NOTE: I added this
+    OutStream& operator<<(const fillw&);
+    OutStream& operator<<(const fillc&);
 
     // Aufruf einer Manipulatorfunktion
     OutStream& operator<<(OutStream& (*f)(OutStream&));

c_os/user/TextDemo.cc

@@ -13,16 +13,23 @@
 void text_demo() {
 
     /* Hier muess Code eingefuegt werden */
-    kout << "Test der Zahlenausgabefunktion:" << endl;
-    kout << endl;
-    kout << "|  dec  |  hex  |  bin  |" << endl;
-    kout << "+-------+-------+-------+" << endl;
+    kout << "Attribut (GREEN on WHITE, blinking): "
+         << (unsigned short)kout.attribute(CGA::WHITE, CGA::GREEN, true) << endl
+         << "Attribut (WHITE on BLACK, no blink): "
+         << (unsigned short)kout.attribute(CGA::BLACK, CGA::WHITE, false) << endl
+         << endl;
+
+    kout << "Test der Zahlenausgabefunktion:" << endl
+         << endl
+         << "|  dec  |  hex  |  bin  |" << endl
+         << "+-------+-------+-------+" << endl;
 
-    // TODO: should fillw just work for the next << ?
     for (unsigned short num = 0; num < 17; ++num) {
-        kout << fillw(0) << "| " << fillw(6) << dec << num;
-        kout << fillw(0) << "| " << fillw(6) << hex << num;
-        kout << fillw(0) << "| " << fillw(6) << bin << num;
-        kout << fillw(0) << "|" << endl;
+        kout << fillw(0) << "| " << fillw(6) << dec << num
+             << fillw(0) << "| " << fillw(6) << hex << num
+             << fillw(0) << "| " << fillw(6) << bin << num
+             << fillw(0) << "|" << endl;
     }
+
+    kout << endl;
 }