diff options
Diffstat (limited to 'libX11/src/xkb/XKBRdBuf.c')
| -rw-r--r-- | libX11/src/xkb/XKBRdBuf.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/libX11/src/xkb/XKBRdBuf.c b/libX11/src/xkb/XKBRdBuf.c new file mode 100644 index 000000000..097630f07 --- /dev/null +++ b/libX11/src/xkb/XKBRdBuf.c @@ -0,0 +1,234 @@ +/* $Xorg: XKBRdBuf.c,v 1.3 2000/08/17 19:45:02 cpqbld Exp $ */ +/************************************************************ +Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc. + +Permission to use, copy, modify, and distribute this +software and its documentation for any purpose and without +fee is hereby granted, provided that the above copyright +notice appear in all copies and that both that copyright +notice and this permission notice appear in supporting +documentation, and that the name of Silicon Graphics not be +used in advertising or publicity pertaining to distribution +of the software without specific prior written permission. +Silicon Graphics makes no representation about the suitability +of this software for any purpose. It is provided "as is" +without any express or implied warranty. + +SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS +SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON +GRAPHICS BE LIABLE FOR ANY SPECIAL, 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. + +********************************************************/ +/* $XFree86: xc/lib/X11/XKBRdBuf.c,v 1.2 2001/10/28 03:32:33 tsi Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#define NEED_REPLIES +#define NEED_EVENTS +#include "Xlibint.h" +#include "XKBlibint.h" +#include <X11/extensions/XKBproto.h> + +/***====================================================================***/ + +int +_XkbInitReadBuffer(Display *dpy,XkbReadBufferPtr buf,int size) +{ + if ((dpy!=NULL) && (buf!=NULL) && (size>0)) { + buf->error= 0; + buf->size= size; + buf->start= buf->data= _XkbAlloc(size); + if (buf->start) { + _XRead(dpy, buf->start, size); + return 1; + } + } + return 0; +} + +#define _XkbReadBufferDataLeft(b) (((b)->size)-((b)->data-(b)->start)) + +int +_XkbSkipReadBufferData(XkbReadBufferPtr from,int size) +{ + if (size==0) + return 1; + if ((from==NULL)||(from->error)||(size<1)|| + (_XkbReadBufferDataLeft(from)<size)) + return 0; + from->data+= size; + return 1; +} + +int +_XkbCopyFromReadBuffer(XkbReadBufferPtr from,char *to,int size) +{ + if (size==0) + return 1; + if ((from==NULL)||(from->error)||(to==NULL)||(size<1)|| + (_XkbReadBufferDataLeft(from)<size)) + return 0; + memcpy(to,from->data,size); + from->data+= size; + return 1; +} + +#ifdef XKB_FORCE_INT_KEYSYM +int +_XkbReadCopyKeySyms(int *wire,KeySym *to,int num_words) +{ + while (num_words-->0) { + *to++= *wire++; + } + return 1; +} + +int +_XkbReadBufferCopyKeySyms(XkbReadBufferPtr from,KeySym *to,int num_words) +{ + if ((unsigned)(num_words*4)>_XkbReadBufferDataLeft(from)) + return 0; + _XkbReadCopyKeySyms((int *)from->data,to,num_words); + from->data+= (4*num_words); + return True; +} + +int +_XkbWriteCopyKeySyms (register KeySym *from,CARD32 *to,int len) +{ + + while (len-->0) { + *to++= (CARD32)*from++; + } + return True; +} +#endif + +#ifdef LONG64 +int +_XkbReadCopyData32(int *wire,long *to,int num_words) +{ + while (num_words-->0) { + *to++= *wire++; + } + return 1; +} +#endif +#ifdef WORD64 +int +_XkbReadCopyData32(int *from,long *lp,int num_words) +{ +long *lpack; +long mask32 = 0x00000000ffffffff; +long maskw, i, bits; + + lpack = (long *)from; + bits = 32; + + for (i=0;i<num_words;i++) { + maskw = mask32 << bits; + *lp++ = (*lpack & maskw) >> bits; + bits = bits ^ 32; + if (bits) + lpack++; + } + return 1; +} +#endif + +#if defined(LONG64) || defined(WORD64) +int +_XkbReadBufferCopy32(XkbReadBufferPtr from,long *to,int num_words) +{ + if ((unsigned)(num_words*4)>_XkbReadBufferDataLeft(from)) + return 0; + _XkbReadCopyData32((int *)from->data,to,num_words); + from->data+= (4*num_words); + return True; +} +#endif + +#ifdef LONG64 +int +_XkbWriteCopyData32 (register unsigned long *from,CARD32 *to,int len) +{ + + while (len-->0) { + *to++= (CARD32)*from++; + } + return True; +} +#endif /* LONG64 */ + +#ifdef WORD64 +_XkbWriteCopyData32 Not Implemented Yet for sizeof(int)==8 +#endif + +char * +_XkbPeekAtReadBuffer(XkbReadBufferPtr from,int size) +{ + if ((from==NULL)||(from->error)||(size<1)|| + (_XkbReadBufferDataLeft(from)<size)) + return NULL; + return from->data; +} + +char * +_XkbGetReadBufferPtr(XkbReadBufferPtr from,int size) +{ +char *ptr; + if ((from==NULL)||(from->error)||(size<1)|| + (_XkbReadBufferDataLeft(from)<size)) + return NULL; + ptr= from->data; + from->data+= size; + return ptr; +} + + +int +_XkbFreeReadBuffer(XkbReadBufferPtr buf) +{ + if ((buf!=NULL) && (buf->start!=NULL)) { + int left; + left= (int)_XkbReadBufferDataLeft(buf); + if (buf->start!=NULL) + Xfree(buf->start); + buf->size= 0; + buf->start= buf->data= NULL; + return left; + } + return 0; +} + +Bool +_XkbGetReadBufferCountedString(XkbReadBufferPtr buf,char **rtrn) +{ +CARD16 len,*pLen; +int left; +char * str = NULL; + + if ((buf==NULL)||(buf->error)||((left=(int)_XkbReadBufferDataLeft(buf))<4)) + return False; + pLen= (CARD16 *)buf->data; + len= *pLen; + if (len>0) { + if (XkbPaddedSize(len+2)>left) + return False; + str= _XkbAlloc(len+1); + if (str) { + memcpy(str,&buf->data[2],len); + str[len]= '\0'; + } + } + buf->data+= XkbPaddedSize(len+2); + *rtrn= str; + return True; +} |