Edit
IABSD.fr/xenocara/lib/libX11/src/FontInfo.c
matthieu
- lib/libX11/src/FontInfo.c
-
/* Copyright 1986, 1998 The Open Group 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. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "Xlibint.h" #include "reallocarray.h" #include <limits.h> #if defined(XF86BIGFONT) #define USE_XF86BIGFONT #endif #ifdef USE_XF86BIGFONT extern void _XF86BigfontFreeFontMetrics( XFontStruct* /* fs */ ); #endif char **XListFontsWithInfo( register Display *dpy, _Xconst char *pattern, /* null-terminated */ int maxNames, int *actualCount, /* RETURN */ XFontStruct **info) /* RETURN */ { unsigned long nbytes; unsigned long reply_left; /* unused data left in reply buffer */ register int i; register XFontStruct *fs; unsigned int size = 0; XFontStruct *finfo = NULL; char **flist = NULL; xListFontsWithInfoReply reply; register xListFontsReq *req; int j; if (pattern != NULL && strlen(pattern) >= USHRT_MAX) return NULL; LockDisplay(dpy); GetReq(ListFontsWithInfo, req); req->maxNames = maxNames; nbytes = req->nbytes = pattern ? (CARD16) strlen (pattern) : 0; req->length += (nbytes + 3) >> 2; _XSend (dpy, pattern, nbytes); /* use _XSend instead of Data, since subsequent _XReply will flush buffer */ for (i = 0; ; i++) { if (!_XReply (dpy, (xReply *) &reply, ((SIZEOF(xListFontsWithInfoReply) - SIZEOF(xGenericReply)) >> 2), xFalse)) { reply.nameLength = 0; /* avoid trying to read more replies */ reply_left = 0; goto badmem; } reply_left = reply.length - ((SIZEOF(xListFontsWithInfoReply) - SIZEOF(xGenericReply)) >> 2); if (reply.nameLength == 0) { _XEatDataWords(dpy, reply_left); break; } if (reply.nReplies >= (INT_MAX - i)) /* avoid overflowing size */ goto badmem; if ((i + reply.nReplies) >= size) { size = i + reply.nReplies + 1; if (size >= (INT_MAX / sizeof(XFontStruct))) goto badmem; if (finfo) { XFontStruct * tmp_finfo; char ** tmp_flist; tmp_finfo = Xreallocarray (finfo, size, sizeof(XFontStruct)); if (tmp_finfo) finfo = tmp_finfo; else goto badmem; tmp_flist = Xreallocarray (flist, size + 1, sizeof(char *)); if (tmp_flist) flist = tmp_flist; else goto badmem; } else { if (! (finfo = Xmallocarray(size, sizeof(XFontStruct)))) goto clearwire; if (! (flist = Xmallocarray(size + 1, sizeof(char *)))) { Xfree(finfo); goto clearwire; } } } fs = &finfo[i]; fs->ext_data = NULL; fs->per_char = NULL; fs->fid = None; fs->direction = reply.drawDirection; fs->min_char_or_byte2 = reply.minCharOrByte2; fs->max_char_or_byte2 = reply.maxCharOrByte2; fs->min_byte1 = reply.minByte1; fs->max_byte1 = reply.maxByte1; fs->default_char = reply.defaultChar; fs->all_chars_exist = reply.allCharsExist; fs->ascent = cvtINT16toInt (reply.fontAscent); fs->descent = cvtINT16toInt (reply.fontDescent); /* XXX the next two statements won't work if short isn't 16 bits */ fs->min_bounds = * (XCharStruct *) &reply.minBounds; fs->max_bounds = * (XCharStruct *) &reply.maxBounds; fs->n_properties = reply.nFontProps; fs->properties = NULL; if (fs->n_properties > 0) { /* nFontProps is a CARD16 */ nbytes = reply.nFontProps * SIZEOF(xFontProp); if ((nbytes >> 2) <= reply_left) { fs->properties = Xmallocarray (reply.nFontProps, sizeof(XFontProp)); } if (! fs->properties) goto badmem; _XRead32 (dpy, (long *)fs->properties, nbytes); reply_left -= (nbytes >> 2); } /* nameLength is a CARD8 */ nbytes = reply.nameLength + 1; if (!i) nbytes++; /* make first string 1 byte longer, to match XListFonts */ flist[i] = Xmalloc (nbytes); if (! flist[i]) { if (finfo[i].properties) Xfree(finfo[i].properties); goto badmem; } if (!i) { *flist[0] = 0; /* zero to distinguish from XListFonts */ flist[0]++; } flist[i][reply.nameLength] = '\0'; _XReadPad (dpy, flist[i], (long) reply.nameLength); } *info = finfo; *actualCount = i; if (flist) flist[i] = NULL; /* required in case XFreeFontNames is called */ UnlockDisplay(dpy); SyncHandle(); return (flist); badmem: /* Free all memory allocated by this function. */ for (j=(i-1); (j >= 0); j--) { if (j == 0) flist[j]--; /* was incremented above */ Xfree(flist[j]); if (finfo[j].properties) Xfree(finfo[j].properties); } Xfree(flist); Xfree(finfo); clearwire: /* Clear the wire. */ _XEatDataWords(dpy, reply_left); while ((reply.nameLength != 0) && _XReply(dpy, (xReply *) &reply, ((SIZEOF(xListFontsWithInfoReply) - SIZEOF(xGenericReply)) >> 2), xTrue)); UnlockDisplay(dpy); SyncHandle(); *info = NULL; *actualCount = 0; return (char **) NULL; } int XFreeFontInfo ( char **names, XFontStruct *info, int actualCount) { register int i; if (names) { Xfree (names[0]-1); for (i = 1; i < actualCount; i++) { Xfree (names[i]); } Xfree(names); } if (info) { for (i = 0; i < actualCount; i++) { if (info[i].per_char) #ifdef USE_XF86BIGFONT _XF86BigfontFreeFontMetrics(&info[i]); #else Xfree (info[i].per_char); #endif if (info[i].properties) Xfree (info[i].properties); } Xfree(info); } return 1; }