Add support for strings stored in flash

.travis.yml

@@ -10,25 +10,6 @@ matrix:
         - BOARD="arduino:samd:mkrwifi1010"
     - env:
         - BOARD="arduino:samd:mkrgsm1400"
-    - env:
-        - NAME=Code Formatting Check
-      # must define an empty before_install phase, otherwise the default one is used
-      before_install: true
-      install:
-        # install Artistic Style code formatter tool: http://astyle.sourceforge.net
-        - |
-          mkdir "${HOME}/astyle";
-          wget --no-verbose --output-document="${HOME}/astyle/astyle.tar.gz" "https://iweb.dl.sourceforge.net/project/astyle/astyle/astyle%203.1/astyle_3.1_linux.tar.gz";
-          tar --extract --file="${HOME}/astyle/astyle.tar.gz" --directory="${HOME}/astyle";
-          cd "${HOME}/astyle/astyle/build/gcc";
-          make;
-          export PATH=$PWD/bin:$PATH;
-          cd "$TRAVIS_BUILD_DIR"
-        # download Arduino's Artistic Style configuration file
-        - wget --directory-prefix="${HOME}/astyle" https://raw.githubusercontent.com/arduino/Arduino/master/build/shared/examples_formatter.conf
-      script:
-        # check code formatting
-        - find . -regextype posix-extended -path './.git' -prune -or \( -iregex '.*\.((ino)|(h)|(hpp)|(hh)|(hxx)|(h\+\+)|(cpp)|(cc)|(cxx)|(c\+\+)|(cp)|(c)|(ipp)|(ii)|(ixx)|(inl)|(tpp)|(txx)|(tpl))$' -and -type f \) -print0 | xargs -0 -L1 bash -c 'if ! diff "$0" <(astyle --options=${HOME}/astyle/examples_formatter.conf --dry-run < "$0"); then echo "Non-compliant code formatting in $0"; false; fi'
     - env:
         - NAME=Spell Check
       language: python

src/Arduino_DebugUtils.cpp

@@ -58,21 +58,34 @@ void Arduino_DebugUtils::timestampOff() {
   _timestamp_on = false;
 }
 
-void Arduino_DebugUtils::print(int const debug_level, const char * fmt, ...) {
-  if (debug_level >= DBG_ERROR   &&
-      debug_level <= DBG_VERBOSE &&
-      debug_level <= _debug_level) {
-    if (_timestamp_on) {
-      char timestamp[20];
-      snprintf(timestamp, 20, "[ %lu ] ", millis());
-      _debug_output_stream->print(timestamp);
-    }
-
-    va_list args;
-    va_start(args, fmt);
-    vPrint(fmt, args);
-    va_end(args);
-  }
+void Arduino_DebugUtils::print(int const debug_level, const char * fmt, ...)
+{
+  if (!shouldPrint(debug_level))
+    return;
+
+  if (_timestamp_on)
+    printTimestamp();
+
+  va_list args;
+  va_start(args, fmt);
+  vPrint(fmt, args);
+  va_end(args);
+}
+
+void Arduino_DebugUtils::print(int const debug_level, const __FlashStringHelper * fmt, ...)
+{
+  if (!shouldPrint(debug_level))
+    return;
+
+  if (_timestamp_on)
+    printTimestamp();
+
+  String fmt_str(fmt);
+
+  va_list args;
+  va_start(args, fmt_str.c_str());
+  vPrint(fmt_str.c_str(), args);
+  va_end(args);
 }
 
 /******************************************************************************
@@ -88,6 +101,18 @@ void Arduino_DebugUtils::vPrint(char const * fmt, va_list args) {
   _debug_output_stream->println(msg_buf);
 }
 
+void Arduino_DebugUtils::printTimestamp()
+{
+  char timestamp[20];
+  snprintf(timestamp, 20, "[ %lu ] ", millis());
+  _debug_output_stream->print(timestamp);
+}
+
+bool Arduino_DebugUtils::shouldPrint(int const debug_level) const
+{
+  return ((debug_level >= DBG_ERROR) && (debug_level <= DBG_VERBOSE) && (debug_level <= _debug_level));
+}
+
 /******************************************************************************
    CLASS INSTANTIATION
  ******************************************************************************/

src/Arduino_DebugUtils.h

@@ -57,6 +57,7 @@ class Arduino_DebugUtils {
     void timestampOff();
 
     void print(int const debug_level, const char * fmt, ...);
+    void print(int const debug_level, const __FlashStringHelper * fmt, ...);
 
 
   private:
@@ -66,6 +67,8 @@ class Arduino_DebugUtils {
     Stream *  _debug_output_stream;
 
     void vPrint(char const * fmt, va_list args);
+    void printTimestamp();
+    bool shouldPrint(int const debug_level) const;
 
 };