diff options
Diffstat (limited to 'lib/liblwres/lwbuffer.c')
| -rw-r--r-- | lib/liblwres/lwbuffer.c | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/lib/liblwres/lwbuffer.c b/lib/liblwres/lwbuffer.c deleted file mode 100644 index 465ad2569..000000000 --- a/lib/liblwres/lwbuffer.c +++ /dev/null @@ -1,287 +0,0 @@ -/* - * Copyright (C) 2000, 2001 Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM - * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL - * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING - * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, - * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION - * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -/* $Id: lwbuffer.c,v 1.1 2004/03/15 20:35:25 as Exp $ */ - -#include <config.h> - -#include <string.h> - -#include <lwres/lwbuffer.h> - -#include "assert_p.h" - -void -lwres_buffer_init(lwres_buffer_t *b, void *base, unsigned int length) -{ - /* - * Make 'b' refer to the 'length'-byte region starting at base. - */ - - REQUIRE(b != NULL); - - b->magic = LWRES_BUFFER_MAGIC; - b->base = base; - b->length = length; - b->used = 0; - b->current = 0; - b->active = 0; -} - -void -lwres_buffer_invalidate(lwres_buffer_t *b) -{ - /* - * Make 'b' an invalid buffer. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - - b->magic = 0; - b->base = NULL; - b->length = 0; - b->used = 0; - b->current = 0; - b->active = 0; -} - -void -lwres_buffer_add(lwres_buffer_t *b, unsigned int n) -{ - /* - * Increase the 'used' region of 'b' by 'n' bytes. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used + n <= b->length); - - b->used += n; -} - -void -lwres_buffer_subtract(lwres_buffer_t *b, unsigned int n) -{ - /* - * Decrease the 'used' region of 'b' by 'n' bytes. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used >= n); - - b->used -= n; - if (b->current > b->used) - b->current = b->used; - if (b->active > b->used) - b->active = b->used; -} - -void -lwres_buffer_clear(lwres_buffer_t *b) -{ - /* - * Make the used region empty. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - - b->used = 0; - b->current = 0; - b->active = 0; -} - -void -lwres_buffer_first(lwres_buffer_t *b) -{ - /* - * Make the consumed region empty. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - - b->current = 0; -} - -void -lwres_buffer_forward(lwres_buffer_t *b, unsigned int n) -{ - /* - * Increase the 'consumed' region of 'b' by 'n' bytes. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->current + n <= b->used); - - b->current += n; -} - -void -lwres_buffer_back(lwres_buffer_t *b, unsigned int n) -{ - /* - * Decrease the 'consumed' region of 'b' by 'n' bytes. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(n <= b->current); - - b->current -= n; -} - -lwres_uint8_t -lwres_buffer_getuint8(lwres_buffer_t *b) -{ - unsigned char *cp; - lwres_uint8_t result; - - /* - * Read an unsigned 8-bit integer from 'b' and return it. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used - b->current >= 1); - - cp = b->base; - cp += b->current; - b->current += 1; - result = ((unsigned int)(cp[0])); - - return (result); -} - -void -lwres_buffer_putuint8(lwres_buffer_t *b, lwres_uint8_t val) -{ - unsigned char *cp; - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used + 1 <= b->length); - - cp = b->base; - cp += b->used; - b->used += 1; - cp[0] = (val & 0x00ff); -} - -lwres_uint16_t -lwres_buffer_getuint16(lwres_buffer_t *b) -{ - unsigned char *cp; - lwres_uint16_t result; - - /* - * Read an unsigned 16-bit integer in network byte order from 'b', - * convert it to host byte order, and return it. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used - b->current >= 2); - - cp = b->base; - cp += b->current; - b->current += 2; - result = ((unsigned int)(cp[0])) << 8; - result |= ((unsigned int)(cp[1])); - - return (result); -} - -void -lwres_buffer_putuint16(lwres_buffer_t *b, lwres_uint16_t val) -{ - unsigned char *cp; - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used + 2 <= b->length); - - cp = b->base; - cp += b->used; - b->used += 2; - cp[0] = (val & 0xff00) >> 8; - cp[1] = (val & 0x00ff); -} - -lwres_uint32_t -lwres_buffer_getuint32(lwres_buffer_t *b) -{ - unsigned char *cp; - lwres_uint32_t result; - - /* - * Read an unsigned 32-bit integer in network byte order from 'b', - * convert it to host byte order, and return it. - */ - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used - b->current >= 4); - - cp = b->base; - cp += b->current; - b->current += 4; - result = ((unsigned int)(cp[0])) << 24; - result |= ((unsigned int)(cp[1])) << 16; - result |= ((unsigned int)(cp[2])) << 8; - result |= ((unsigned int)(cp[3])); - - return (result); -} - -void -lwres_buffer_putuint32(lwres_buffer_t *b, lwres_uint32_t val) -{ - unsigned char *cp; - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used + 4 <= b->length); - - cp = b->base; - cp += b->used; - b->used += 4; - cp[0] = (unsigned char)((val & 0xff000000) >> 24); - cp[1] = (unsigned char)((val & 0x00ff0000) >> 16); - cp[2] = (unsigned char)((val & 0x0000ff00) >> 8); - cp[3] = (unsigned char)(val & 0x000000ff); -} - -void -lwres_buffer_putmem(lwres_buffer_t *b, const unsigned char *base, - unsigned int length) -{ - unsigned char *cp; - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used + length <= b->length); - - cp = (unsigned char *)b->base + b->used; - memcpy(cp, base, length); - b->used += length; -} - -void -lwres_buffer_getmem(lwres_buffer_t *b, unsigned char *base, - unsigned int length) -{ - unsigned char *cp; - - REQUIRE(LWRES_BUFFER_VALID(b)); - REQUIRE(b->used - b->current >= length); - - cp = b->base; - cp += b->current; - b->current += length; - - memcpy(base, cp, length); -} |