seek peek

Author: bbSnavy

src/buffer.c

@@ -46,6 +46,13 @@ t_ion_result_code ion_buffer_seek_write(t_ion_buffer *self, size_t curr) {
   return vector_seek_write(self->body, curr);
 }
 
+t_ion_result_code ion_buffer_seek_peek(t_ion_buffer *self, size_t curr) {
+  if (self == NULL)
+    return RESULT_ERROR;
+
+  return vector_seek_peek(self->body, curr);
+}
+
 t_ion_result_code ion_buffer_write(t_ion_buffer *self, void *src, size_t len) {
   if (self == NULL)
     return RESULT_ERROR;

src/ion.h

@@ -69,8 +69,10 @@ t_ion_vector *vector_new(size_t unit);
 t_ion_vector *vector_clone(t_ion_vector *self);
 t_ion_result_code vector_seek_read(t_ion_vector *self, size_t index);
 t_ion_result_code vector_seek_write(t_ion_vector *self, size_t index);
+t_ion_result_code vector_seek_peek(t_ion_vector *self, size_t index);
 t_ion_result_code vector_seek_relative_read(t_ion_vector *self, int64_t diff);
 t_ion_result_code vector_seek_relative_write(t_ion_vector *self, int64_t diff);
+t_ion_result_code vector_seek_relative_peek(t_ion_vector *self, int64_t diff);
 t_ion_result_code vector_extend(t_ion_vector *self);
 t_ion_result_code vector_write(t_ion_vector *self, void *src, size_t len);
 t_ion_result_code vector_read(t_ion_vector *self, void *dst, size_t len);
@@ -87,6 +89,7 @@ void ion_buffer_free(t_ion_buffer *self);
 t_ion_buffer *ion_buffer_clone(t_ion_buffer *self);
 t_ion_result_code ion_buffer_seek_read(t_ion_buffer *self, size_t curr);
 t_ion_result_code ion_buffer_seek_write(t_ion_buffer *self, size_t curr);
+t_ion_result_code ion_buffer_seek_peek(t_ion_buffer *self, size_t curr);
 t_ion_result_code ion_buffer_write(t_ion_buffer *self, void *src, size_t len);
 t_ion_result_code ion_buffer_read(t_ion_buffer *self, void *dst, size_t len);
 t_ion_result_code ion_buffer_peek(t_ion_buffer *self, void *dst, size_t len);

src/vector.c

@@ -65,6 +65,21 @@ t_ion_result_code vector_seek_write(t_ion_vector *self, size_t index) {
   return RESULT_OK;
 }
 
+t_ion_result_code vector_seek_peek(t_ion_vector *self, size_t index) {
+  if (self == NULL)
+    return RESULT_ERROR;
+
+  if (index < 0)
+    return RESULT_ERROR;
+
+  if (index >= self->size)
+    return RESULT_ERROR;
+
+  self->curr_p = index;
+
+  return RESULT_OK;
+}
+
 t_ion_result_code vector_seek_relative_read(t_ion_vector *self, int64_t diff) {
   if (self == NULL)
     return RESULT_ERROR;
@@ -79,6 +94,13 @@ t_ion_result_code vector_seek_relative_write(t_ion_vector *self, int64_t diff) {
   return vector_seek_write(self, (size_t)((int64_t)self->curr_r + diff));
 }
 
+t_ion_result_code vector_seek_relative_peek(t_ion_vector *self, int64_t diff) {
+  if (self == NULL)
+    return RESULT_ERROR;
+
+  return vector_seek_peek(self, (size_t)((int64_t)self->curr_r + diff));
+}
+
 t_ion_result_code vector_extend(t_ion_vector *self) {
   void *body;
   size_t size;