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wsbuffer.c：源码内容

							/*
 *
 * wsbuffer.c
 *
 * Author: Markku Rossi <mtr@iki.fi>
 *
 * Copyright (c) 1999-2000 WAPIT OY LTD.
 *		 All rights reserved.
 *
 * A multipurpose buffer.
 *
 */
#include "wsint.h"
/********************* Global functions *********************************/
void ws_buffer_init(WsBuffer *buffer)
{
    buffer->len = 0;
    buffer->data = NULL;
}
void ws_buffer_uninit(WsBuffer *buffer)
{
    ws_free(buffer->data);
    buffer->len = 0;
    buffer->data = NULL;
}
WsBuffer *ws_buffer_alloc()
{
    return ws_calloc(1, sizeof(WsBuffer));
}
void ws_buffer_free(WsBuffer *buffer)
{
    ws_free(buffer->data);
    ws_free(buffer);
}
WsBool ws_buffer_append(WsBuffer *buffer, unsigned char *data, size_t len)
{
    unsigned char *p;
    if (!ws_buffer_append_space(buffer, &p, len))
        return WS_FALSE;
    memcpy(p, data, len);
    return WS_TRUE;
}
WsBool ws_buffer_append_space(WsBuffer *buffer, unsigned char **p, size_t size)
{
    unsigned char *ndata = ws_realloc(buffer->data, buffer->len + size);
    if (ndata == NULL)
        return WS_FALSE;
    buffer->data = ndata;
    if (p)
        *p = buffer->data + buffer->len;
    buffer->len += size;
    return WS_TRUE;
}
unsigned char *ws_buffer_ptr(WsBuffer *buffer)
{
    return buffer->data;
}
size_t ws_buffer_len(WsBuffer *buffer)
{
    return buffer->len;
}
unsigned char *ws_buffer_steal(WsBuffer *buffer)
{
    unsigned char *p = buffer->data;
    buffer->data = NULL;
    buffer->len = 0;
    return p;
}

						