runtime: status: add descriptive messages for status codes

bshell.runtime/include/bshell/status.h

@@ -20,5 +20,6 @@ enum bshell_status {
 };
 
 extern enum bshell_status bshell_status_from_errno(int err);
+extern const char *bshell_status_get_description(int err);
 
 #endif

bshell.runtime/status.c

@@ -17,3 +17,41 @@ enum bshell_status bshell_status_from_errno(int err)
 		return BSHELL_ERR_INTERNAL_FAILURE;
 	}
 }
+
+const char *bshell_status_get_description(int err)
+{
+	switch (err) {
+	case BSHELL_SUCCESS:
+		return "Success";
+	case BSHELL_ERR_EOF:
+		return "Unexpected end-of-file";
+	case BSHELL_ERR_BAD_SYNTAX:
+		return "Bad syntax";
+	case BSHELL_ERR_BAD_FORMAT:
+		return "Bad data format";
+	case BSHELL_ERR_BAD_STATE:
+		return "Object is in bad state";
+	case BSHELL_ERR_INVALID_VALUE:
+		return "Invalid value";
+	case BSHELL_ERR_INVALID_ARGUMENT:
+		return "Invalid argument";
+	case BSHELL_ERR_NO_MEMORY:
+		return "Out of memory";
+	case BSHELL_ERR_NO_ENTRY:
+		return "No such file or directory";
+	case BSHELL_ERR_NO_DATA:
+		return "No data available";
+	case BSHELL_ERR_NAME_EXISTS:
+		return "File or object already exists";
+	case BSHELL_ERR_NOT_SUPPORTED:
+		return "Operation not supported";
+	case BSHELL_ERR_IO_FAILURE:
+		return "I/O failure";
+	case BSHELL_ERR_ACCESS_DENIED:
+		return "Access denied";
+	case BSHELL_ERR_INTERNAL_FAILURE:
+		return "Internal failure";
+	default:
+		return "Unknown error";
+	}
+}