Diff: CmdLine.cpp

Revision:

13:abedfe18f924

Parent:

12:447a747099e6

Child:

14:9abcdf4eb4e4

--- a/CmdLine.cpp	Thu Dec 19 01:28:54 2019 +0000
+++ b/CmdLine.cpp	Mon Apr 06 05:12:27 2020 -0700
@@ -640,6 +640,42 @@
     return false; // no match
 }
 
+/** CmdLine::parse_int_dec matches "key"=value
+ *
+ * @return true if keyword was found in buffer
+ * @param[in] key string value to match
+ * @param[out] intVar updated from value string if match "key"=value
+ *
+ * @post on successful match, the key=value substring is deleted from cmdbuf
+ *
+ * Prefix '$' or '0x' or '0X' selects radix base-16 hexadecimal.
+ * Default number conversion radix is base-10 decimal.
+ */
+bool CmdLine::parse_int_dec(const char *key, int& intVar)
+{
+    char valueBuf[16];
+    // bool parse_and_remove_key(const char *key, char *valueBuf, int valueBufLen);
+    if (parse_and_remove_key(key, valueBuf, sizeof(valueBuf)))
+    {
+        // ASSERT: buf[matched_index] contains '=' followed by value
+        // parse cmdLine arg (CMD=\d)? --> g_I2C_command_regAddress
+        // TODO1: parse_byte_hex take hex prefix 0x 0X or suffix $ h H
+        if (valueBuf[0] == '$')
+        {
+            intVar = strtoul(valueBuf + 1, NULL, 16);
+            return true;
+        }
+        if (valueBuf[0] == '0' && (valueBuf[1] == 'X' || valueBuf[1] == 'x'))
+        {
+            intVar = strtoul(valueBuf + 2, NULL, 16);
+            return true;
+        }
+        intVar = strtoul(valueBuf, NULL, 10); // default radix decimal
+        return true;
+    }
+    return false; // no match
+}
+
 /** CmdLine::parse_int16_hex matches "key"=value
  *
  * @return true if keyword was found in buffer