first draft of CLI

CLI/CLI.c

@@ -0,0 +1,95 @@
+#include "CLI.h"
+
+#include "../FIFOBuffChar.h"
+
+void (*CLI_lineOut)(char* line);
+CMDList_t* CMDList;
+FIFOBuffChar_t* FIFO;
+
+// initilize and register the lineout print function
+bool CLI_init(CLI_lineoutFn_t* lineOut, CMDList_t* cmdList)
+{
+	CLI_lineOut = lineOut;
+	CMDList = cmdList;
+
+	FIFO = FIFOBuffChar_create();
+}
+
+bool CLI_deinit()
+{
+	CLI_lineOut = NULL;
+	CMDList = NULL;
+
+	FIFOBuffChar_delete(FIFO);
+}
+
+char* fifoToString(FIFOBuffChar_t* fifo)
+{
+	char* out = malloc(fifo->size + 1);
+	char* write_p = out;
+
+	for (int i = fifo->size; i > 0; i--)
+	{
+		FIFOBuffChar_get(fifo, write_p);
+		write_p++;
+	}
+
+	*write_p = 0;
+
+	return out;
+}
+
+int tryExecute(FIFOBuffChar_t* fifo)
+{
+	char* line = fifoToString(fifo);
+	CMD_t cmd = CMDList_get(CMDList, line);
+	
+	if (cmd != NULL)
+	{
+		(*(cmd->fn))(line);
+		return true;
+	}
+	else
+	{
+		return false;
+	}
+}
+
+// to recive a single caracter
+bool CLI_charIn(char c)
+{
+	if ((c >= 'a') && (c <= 'z'))
+	{
+		c &= (~0x20); // convert to uppercase
+	}
+
+	if ( //TODO: update list of accepted characters
+			   ((c >= 'A') && (c <= 'Z'))
+			|| ((c >= '0') && (c <= '9'))
+			|| (c = ' ')
+			|| (c = '-')
+			|| (c = '_')
+		)
+	{
+		FIFOBuffChar_put(FIFO, c); // save char in buffer
+		(*CLI_lineOut)(&c); // echo to terminal
+	}
+	else
+	{
+		switch (c)
+		{
+			case '\n':
+			case '\r':
+				(*CLI_lineOut)(&c); // echo to terminal
+				FIFOBuffChar_t* fifo = FIFO;
+				FIFO = FIFOBuffChar_create();
+				tryExecute(fifo);
+				FIFOBuffChar_delete(fifo);
+				break;
+
+			//TODO: add hire backspace and arrow detection
+			default:
+				break;
+		}
+	}
+}