Squish some CardReader code

Marlin/Marlin.h

   #include "stopwatch.h"
 #endif
 
-#define SERIAL_CHAR(x) MYSERIAL.write(x)
-#define SERIAL_EOL SERIAL_CHAR('\n')
-
-#define SERIAL_PROTOCOLCHAR(x) SERIAL_CHAR(x)
-#define SERIAL_PROTOCOL(x) MYSERIAL.print(x)
-#define SERIAL_PROTOCOL_F(x,y) MYSERIAL.print(x,y)
-#define SERIAL_PROTOCOLPGM(x) serialprintPGM(PSTR(x))
-#define SERIAL_PROTOCOLLN(x) do{ MYSERIAL.print(x); SERIAL_EOL; }while(0)
-#define SERIAL_PROTOCOLLNPGM(x) do{ serialprintPGM(PSTR(x "\n")); }while(0)
-
-#define SERIAL_PROTOCOLPAIR(name, value) SERIAL_ECHOPAIR(name, value)
-#define SERIAL_PROTOCOLLNPAIR(name, value) do{ SERIAL_ECHOPAIR(name, value); SERIAL_EOL; }while(0)
-
-extern const char errormagic[] PROGMEM;
 extern const char echomagic[] PROGMEM;
+extern const char errormagic[] PROGMEM;
 
-#define SERIAL_ERROR_START serialprintPGM(errormagic)
-#define SERIAL_ERROR(x) SERIAL_PROTOCOL(x)
-#define SERIAL_ERRORPGM(x) SERIAL_PROTOCOLPGM(x)
-#define SERIAL_ERRORLN(x) SERIAL_PROTOCOLLN(x)
-#define SERIAL_ERRORLNPGM(x) SERIAL_PROTOCOLLNPGM(x)
-
-#define SERIAL_ECHO_START serialprintPGM(echomagic)
-#define SERIAL_ECHO(x) SERIAL_PROTOCOL(x)
-#define SERIAL_ECHOPGM(x) SERIAL_PROTOCOLPGM(x)
-#define SERIAL_ECHOLN(x) SERIAL_PROTOCOLLN(x)
-#define SERIAL_ECHOLNPGM(x) SERIAL_PROTOCOLLNPGM(x)
+#define SERIAL_CHAR(x) (MYSERIAL.write(x))
+#define SERIAL_EOL SERIAL_CHAR('\n')
 
-#define SERIAL_ECHOPAIR(name,value) (serial_echopair_P(PSTR(name),(value)))
+#define SERIAL_PROTOCOLCHAR(x)              SERIAL_CHAR(x)
+#define SERIAL_PROTOCOL(x)                  (MYSERIAL.print(x))
+#define SERIAL_PROTOCOL_F(x,y)              (MYSERIAL.print(x,y))
+#define SERIAL_PROTOCOLPGM(x)               (serialprintPGM(PSTR(x)))
+#define SERIAL_PROTOCOLLN(x)                do{ MYSERIAL.print(x); SERIAL_EOL; }while(0)
+#define SERIAL_PROTOCOLLNPGM(x)             (serialprintPGM(PSTR(x "\n")))
+#define SERIAL_PROTOCOLPAIR(name, value)    (serial_echopair_P(PSTR(name),(value)))
+#define SERIAL_PROTOCOLLNPAIR(name, value)  do{ SERIAL_PROTOCOLPAIR(name, value); SERIAL_EOL; }while(0)
+
+#define SERIAL_ECHO_START             (serialprintPGM(echomagic))
+#define SERIAL_ECHO(x)                 SERIAL_PROTOCOL(x)
+#define SERIAL_ECHOPGM(x)              SERIAL_PROTOCOLPGM(x)
+#define SERIAL_ECHOLN(x)               SERIAL_PROTOCOLLN(x)
+#define SERIAL_ECHOLNPGM(x)            SERIAL_PROTOCOLLNPGM(x)
+#define SERIAL_ECHOPAIR(name,value)    SERIAL_PROTOCOLPAIR(name, value)
+#define SERIAL_ECHOLNPAIR(name, value) SERIAL_PROTOCOLLNPAIR(name, value)
+
+#define SERIAL_ERROR_START            (serialprintPGM(errormagic))
+#define SERIAL_ERROR(x)                SERIAL_PROTOCOL(x)
+#define SERIAL_ERRORPGM(x)             SERIAL_PROTOCOLPGM(x)
+#define SERIAL_ERRORLN(x)              SERIAL_PROTOCOLLN(x)
+#define SERIAL_ERRORLNPGM(x)           SERIAL_PROTOCOLLNPGM(x)
 
 void serial_echopair_P(const char* s_P, const char *v);
 void serial_echopair_P(const char* s_P, char v);

Marlin/cardreader.cpp

 #if ENABLED(SDSUPPORT)
 
 CardReader::CardReader() {
+  sdprinting = cardOK = saving = logging = false;
   filesize = 0;
   sdpos = 0;
-  sdprinting = false;
-  cardOK = false;
-  saving = false;
-  logging = false;
   workDirDepth = 0;
   file_subcall_ctr = 0;
   memset(workDirParents, 0, sizeof(workDirParents));
 }
 
 void CardReader::openFile(char* name, bool read, bool push_current/*=false*/) {
+
   if (!cardOK) return;
-  if (file.isOpen()) { //replacing current file by new file, or subfile call
+
+  uint8_t doing = 0;
+  if (isFileOpen()) { //replacing current file by new file, or subfile call
     if (push_current) {
       if (file_subcall_ctr > SD_PROCEDURE_DEPTH - 1) {
         SERIAL_ERROR_START;
         return;
       }
 
-      SERIAL_ECHO_START;
-      SERIAL_ECHOPGM("SUBROUTINE CALL target:\"");
-      SERIAL_ECHO(name);
-      SERIAL_ECHOPGM("\" parent:\"");
-
-      //store current filename and position
+      // Store current filename and position
       getAbsFilename(proc_filenames[file_subcall_ctr]);
 
-      SERIAL_ECHO(proc_filenames[file_subcall_ctr]);
-      SERIAL_ECHOPGM("\" pos");
-      SERIAL_ECHOLN(sdpos);
+      SERIAL_ECHO_START;
+      SERIAL_ECHOPAIR("SUBROUTINE CALL target:\"", name);
+      SERIAL_ECHOPAIR("\" parent:\"", proc_filenames[file_subcall_ctr]);
+      SERIAL_ECHOLNPAIR("\" pos", sdpos);
       filespos[file_subcall_ctr] = sdpos;
       file_subcall_ctr++;
     }
     else {
-     SERIAL_ECHO_START;
-     SERIAL_ECHOPGM("Now doing file: ");
-     SERIAL_ECHOLN(name);
+      doing = 1;
     }
   }
-  else { //opening fresh file
-    file_subcall_ctr = 0; //resetting procedure depth in case user cancels print while in procedure
+  else { // Opening fresh file
+    doing = 2;
+    file_subcall_ctr = 0; // Reset procedure depth in case user cancels print while in procedure
+  }
+
+  if (doing) {
     SERIAL_ECHO_START;
-    SERIAL_ECHOPGM("Now fresh file: ");
-    SERIAL_ECHOLN(name);
+    SERIAL_ECHOPGM("Now ");
+    SERIAL_ECHO(doing == 1 ? "doing" : "fresh");
+    SERIAL_ECHOLNPAIR(" file: ", name);
   }
 
   stopSDPrint();
   SdFile myDir;
   curDir = &root;
   char *fname = name;
-
   char *dirname_start, *dirname_end;
+
   if (name[0] == '/') {
     dirname_start = &name[1];
     while (dirname_start != NULL) {