author | unc0rr |
Sat, 24 Aug 2013 00:13:15 +0400 | |
changeset 9409 | 6564baf7dedf |
parent 7314 | 6171f0bad318 |
child 10017 | de822cd3df3a |
permissions | -rw-r--r-- |
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/* |
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* Hedgewars, a free turn based strategy game |
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* Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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*/ |
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#ifndef BUFFER_H_ |
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#define BUFFER_H_ |
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#include <stdint.h> |
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#include <stddef.h> |
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/** |
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* A simple struct to hold both the pointer to an array and its size, |
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* for e.g. conveniently returning it from a function. |
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* |
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* Convention: Size is zero iff data is a NULL pointer. |
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*/ |
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typedef struct { |
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void *data; |
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size_t size; |
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} flib_buffer; |
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/** |
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* Just like flib_buffer, but the contents are not supposed to be modified. |
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*/ |
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typedef struct { |
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const void *data; |
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size_t size; |
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} flib_constbuffer; |
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/** |
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* Simple variable-capacity data structure that can be efficiently appended to. |
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*/ |
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typedef struct _flib_vector flib_vector; |
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/** |
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* Create a new vector. Needs to be destroyed again later with flib_vector_destroy. |
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* May return NULL if memory runs out. |
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*/ |
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flib_vector *flib_vector_create(); |
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/** |
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* Free the memory of this vector |
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*/ |
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void flib_vector_destroy(flib_vector *vec); |
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/** |
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* Resize the vector. This changes the size, and ensures the capacity is large enough to |
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* for the new size. Can also free memory if the new size is smaller. There is no guarantee |
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* about the contents of extra memory. |
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*/ |
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int flib_vector_resize(flib_vector *vec, size_t newSize); |
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/** |
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* Append the provided data to the end of the vector, enlarging it as required. |
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* The vector remains unchanged if appending fails. |
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* Returns 0 on success. |
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*/ |
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int flib_vector_append(flib_vector *vec, const void *data, size_t len); |
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/** |
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* Append data from a format string to the buffer (without trailing 0) |
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* Returns 0 on success. |
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*/ |
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int flib_vector_appendf(flib_vector *vec, const char *template, ...); |
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/** |
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* Return a pointer to the current data buffer of the vector. This pointer can |
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* become invalid if the vector size or capacity is changed. |
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*/ |
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void *flib_vector_data(flib_vector *vec); |
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/** |
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* Return the current size of the vector. |
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*/ |
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size_t flib_vector_size(flib_vector *vec); |
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/** |
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* Return a buffer pointing to the current contents of the vector. |
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* These will become invalid if the vector size or capacity is changed. |
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*/ |
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flib_buffer flib_vector_as_buffer(flib_vector *vec); |
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/** |
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* Return a constbuffer pointing to the current contents of the vector. |
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* These will become invalid if the vector size or capacity is changed. |
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*/ |
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flib_constbuffer flib_vector_as_constbuffer(flib_vector *vec); |
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#endif |