refactor: common bool2string code

Author: vlastahajek

src/Point.h

@@ -29,6 +29,7 @@
 
 #include <Arduino.h>
 #include "WritePrecision.h"
+#include "util/helpers.h"
 
 /**
  * Class Point represents InfluxDB point in line protocol.
@@ -49,7 +50,7 @@ friend class InfluxDBClient;
     void addField(String name, unsigned int value)  { putField(name, String(value)+"i"); }
     void addField(String name, long value)          { putField(name, String(value)+"i"); }
     void addField(String name, unsigned long value) { putField(name, String(value)+"i"); }
-    void addField(String name, bool value)          { putField(name,value?"true":"false"); }
+    void addField(String name, bool value)          { putField(name, bool2string(value)); }
     void addField(String name, String value)        { addField(name, value.c_str()); }
     void addField(String name, const char *value);
     // Set timestamp to `now()` and store it in specified precision, nanoseconds by default. Date and time must be already set. See `configTime` in the device API

src/query/HttpStreamScanner.cpp

@@ -29,6 +29,7 @@
 // Uncomment bellow in case of a problem and rebuild sketch
 //#define INFLUXDB_CLIENT_DEBUG_ENABLE
 #include "util/debug.h"
+#include "util/helpers.h"
 
 HttpStreamScanner::HttpStreamScanner(HTTPClient *client, bool chunked)
 {
@@ -37,7 +38,7 @@ HttpStreamScanner::HttpStreamScanner(HTTPClient *client, bool chunked)
     _chunked = chunked;
     _chunkHeader = chunked;
     _len = client->getSize();
-    INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner: chunked: %s, size: %d\n", _chunked?"true":"false", _len);
+    INFLUXDB_CLIENT_DEBUG("[D] HttpStreamScanner: chunked: %s, size: %d\n", bool2string(_chunked), _len);
 }
 
 bool HttpStreamScanner::next() {

src/util/helpers.cpp

@@ -161,3 +161,6 @@ bool isValidID(const char *idString) {
    return true;
 }
 
+const char *bool2string(bool val) {
+    return (val?"true":"false");
+}

src/util/helpers.h

@@ -50,6 +50,7 @@ String escapeValue(const char *value);
 String urlEncode(const char* src);
 // Returns true of string contains valid InfluxDB ID type
 bool isValidID(const char *idString);
-
+// Return "true" if val is true, otherwise "false"
+const char *bool2string(bool val);
 
 #endif //_INFLUXDB_CLIENT_HELPERS_H