add option to parse partial to parseInt()

src/lib/ebus/symbol.cpp

@@ -56,12 +56,12 @@ static const symbol_t CRC_LOOKUP_TABLE[] = {
 
 
 unsigned int parseInt(const char* str, int base, unsigned int minValue, unsigned int maxValue,
-    result_t* result, size_t* length) {
+    result_t* result, size_t* length, bool allowIncomplete) {
   char* strEnd = nullptr;
 
   unsigned long ret = strtoul(str, &strEnd, base);
 
-  if (strEnd == nullptr || strEnd == str || *strEnd != 0) {
+  if (strEnd == nullptr || strEnd == str || (!allowIncomplete && *strEnd != 0)) {
     *result = RESULT_ERR_INVALID_NUM;  // invalid value
     return 0;
   }
@@ -83,7 +83,7 @@ int parseSignedInt(const char* str, int base, int minValue, int maxValue,
 
   long ret = strtol(str, &strEnd, base);
 
-  if (strEnd == nullptr || (!allowIncomplete && *strEnd != 0)) {
+  if (strEnd == nullptr || strEnd == str || (!allowIncomplete && *strEnd != 0)) {
     *result = RESULT_ERR_INVALID_NUM;  // invalid value
     return 0;
   }

src/lib/ebus/symbol.h

@@ -91,20 +91,21 @@ enum PredefinedSymbol : symbol_t {
 /**
  * Parse an unsigned int value.
  * @param str the string to parse.
- * @param base the numerical base.
+ * @param base the numerical base (or 0 to determine from the prefix).
  * @param minValue the minimum resulting value.
  * @param maxValue the maximum resulting value.
  * @param result the variable in which to store an error code when parsing failed or the value is out of bounds.
  * @param length the optional variable in which to store the number of read characters.
+ * @param allowIncomplete true to allow parsing less than the complete string.
  * @return the parsed value.
  */
 unsigned int parseInt(const char* str, int base, unsigned int minValue, unsigned int maxValue,
-    result_t* result, size_t* length = nullptr);
+    result_t* result, size_t* length = nullptr, bool allowIncomplete = false);
 
 /**
  * Parse a signed int value.
  * @param str the string to parse.
- * @param base the numerical base.
+ * @param base the numerical base (or 0 to determine from the prefix).
  * @param minValue the minimum resulting value.
  * @param maxValue the maximum resulting value.
  * @param result the variable in which to store an error code when parsing failed or the value is out of bounds.