/* $XConsortium: XFontNames.c,v 11.26 92/03/03 14:21:22 rws Exp $ */ /* Copyright Massachusetts Institute of Technology 1986 */ /* Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, 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 M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. */ #define NEED_REPLIES #include "Xlibint.h" #if NeedFunctionPrototypes char **XListFonts( register Display *dpy, _Xconst char *pattern, /* null-terminated */ int maxNames, int *actualCount) /* RETURN */ #else char **XListFonts(dpy, pattern, maxNames, actualCount) register Display *dpy; char *pattern; /* null-terminated */ int maxNames; int *actualCount; /* RETURN */ #endif { register long nbytes; register unsigned i; register int length; char **flist; char *ch; xListFontsReply rep; register xListFontsReq *req; register long rlen; LockDisplay(dpy); GetReq(ListFonts, req); req->maxNames = maxNames; nbytes = req->nbytes = pattern ? strlen (pattern) : 0; req->length += (nbytes + 3) >> 2; _XSend (dpy, pattern, nbytes); /* use _XSend instead of Data, since following _XReply will flush buffer */ (void) _XReply (dpy, (xReply *)&rep, 0, xFalse); if (rep.nFonts) { flist = (char **)Xmalloc ((unsigned)rep.nFonts * sizeof(char *)); rlen = rep.length << 2; ch = (char *) Xmalloc((unsigned) (rlen + 1)); /* +1 to leave room for last null-terminator */ if ((! flist) || (! ch)) { if (flist) Xfree((char *) flist); if (ch) Xfree(ch); _XEatData(dpy, (unsigned long) rlen); UnlockDisplay(dpy); SyncHandle(); return (char **) NULL; } _XReadPad (dpy, ch, rlen); /* * unpack into null terminated strings. */ length = *(unsigned char *)ch; *ch = 1; /* make sure it is non-zero for XFreeFontNames */ for (i = 0; i < rep.nFonts; i++) { flist[i] = ch + 1; /* skip over length */ ch += length + 1; /* find next length ... */ length = *(unsigned char *)ch; *ch = '\0'; /* and replace with null-termination */ } } else flist = (char **) NULL; *actualCount = rep.nFonts; UnlockDisplay(dpy); SyncHandle(); return (flist); } XFreeFontNames(list) char **list; { if (list) { if (!*(list[0]-1)) { /* from ListFontsWithInfo */ register char **names; for (names = list+1; *names; names++) Xfree (*names); } Xfree (list[0]-1); Xfree ((char *)list); } }