util/table: new rz_table_add_vrowf to take va_list and add a new row

For cases when we need to directly use arguments of a variadic function
to add a new row to `RzTable`, the new `rz_table_add_vrowf` will take a
`va_list` and a format string to do the same.

librz/include/rz_util/rz_table.h

@@ -70,6 +70,7 @@ RZ_API void rz_table_set_columnsf(RzTable *t, const char *fmt, ...);
 RZ_API void rz_table_set_vcolumnsf(RzTable *t, const char *fmt, va_list ap);
 RZ_API RzTableRow *rz_table_row_new(RzPVector /*<char *>*/ *items);
 RZ_API void rz_table_add_row(RZ_NONNULL RzTable *t, const char *name, ...);
+RZ_API void rz_table_add_vrowf(RZ_NONNULL RzTable *t, const char *fmt, va_list ap);
 RZ_API void rz_table_add_rowf(RzTable *t, const char *fmt, ...);
 RZ_API void rz_table_add_row_columnsf(RzTable *t, const char *fmt, ...);
 RZ_API void rz_table_add_row_vec(RZ_NONNULL RzTable *t, RZ_NONNULL RzPVector /*<char *>*/ *items);

librz/util/table.c

@@ -242,6 +242,23 @@ RZ_API void rz_table_set_columnsf(RzTable *t, const char *fmt, ...) {
 	va_end(ap);
 }
 
+/**
+ * \brief Given a row in \c RzTable, append a new column with given format
+ *        by pulling out value of that type form given va_list
+ *
+ * Possible values for format are :
+ * - s, z : String (const char*)
+ * - b    : Boolean (bool)
+ * - i, d : Integer (int, int32_t)
+ * - n    : Number (unsigned long long int, uint64_t)
+ * - u    : Size (B, KB, MB, GB, etc...)
+ * - f    : Double
+ * - x, X : Hex value (x means all smal, X means all CAPS)
+ *
+ * \param row \p RzPVector to append the new column into
+ * \param fmt Character representing the type of value to be stored in last column of given row.
+ * \param ap Variadic argument list. Will be used to pull out value based on given fmt.
+ */
 #define add_column_to_rowf(row, fmt, ap) \
 	do { \
 		const char *arg = NULL; \
@@ -318,21 +335,36 @@ RZ_API void rz_table_add_row_columnsf(RzTable *t, const char *fmt, ...) {
 }
 
 /**
- * Add a new row with the specified columns values.
+ * \breif Add a new row with given format and variadic list of values.
+ *
+ * \param t Table to add new row into
+ * \param fmt Format string to define column ordering and type of given row.
+ * \param ap Variadic argument list to pull values for each column in row from.
+ *
+ * \sa rz_table_append_column_to_vrowf
  */
-RZ_API void rz_table_add_rowf(RzTable *t, const char *fmt, ...) {
+RZ_API void rz_table_add_vrowf(RZ_NONNULL RzTable *t, const char *fmt, va_list ap) {
 	rz_return_if_fail(t && fmt);
 
-	va_list ap;
-	va_start(ap, fmt);
 	RzPVector *vec = rz_pvector_new(free);
 	for (const char *f = fmt; *f; f++) {
 		add_column_to_rowf(vec, *f, ap);
 	}
-	va_end(ap);
 	rz_table_add_row_vec(t, vec);
 }
 
+/**
+ * Add a new row with the specified columns values.
+ */
+RZ_API void rz_table_add_rowf(RzTable *t, const char *fmt, ...) {
+	rz_return_if_fail(t && fmt);
+
+	va_list ap;
+	va_start(ap, fmt);
+	rz_table_add_vrowf(t, fmt, ap);
+	va_end(ap);
+}
+
 RZ_API void rz_table_add_row(RZ_NONNULL RzTable *t, const char *name, ...) {
 	rz_return_if_fail(t);
 	va_list ap;