Very rough FORMAT_MIN_WIDTH implementation

matthijskooijman · matthijskooijman · commit 07267a11a0b3 · 2018-06-04T19:03:57.000+02:00
diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
@@ -99,6 +99,9 @@ size_t Formatters::DefaultFormatter::printNumber(Print *p , unsigned long n) con
     *--str = c < 10 ? c + '0' : c + 'A' - 10;
   } while(n);
 
+  while (str > buf && buf + sizeof(buf) - 1 - str < this->min_width)
+    *--str = '0';
+
   return p->write(str);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -99,6 +99,9 @@ size_t Formatters::DefaultFormatter::printNumber(Print *p , unsigned long n) con`
`99`	`99`	`*--str = c < 10 ? c + '0' : c + 'A' - 10;`
`100`	`100`	`} while(n);`
`101`	`101`
	`102`	`+ while (str > buf && buf + sizeof(buf) - 1 - str < this->min_width)`
	`103`	`+ *--str = '0';`
	`104`	`+`
`102`	`105`	`return p->write(str);`
`103`	`106`	`}`
`104`	`107`