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dixfonts.c
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dixfonts.c
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/************************************************************************
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
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 Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL 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.
************************************************************************/
/* The panoramix components contained the following notice */
/*
Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software.
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
DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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 Digital Equipment Corporation
shall not be used in advertising or otherwise to promote the sale, use or other
dealings in this Software without prior written authorization from Digital
Equipment Corporation.
******************************************************************/
#define NEED_REPLIES
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include <X11/Xmd.h>
#include <X11/Xproto.h>
#include "scrnintstr.h"
#include "resource.h"
#include "dixstruct.h"
#include "cursorstr.h"
#include "misc.h"
#include "opaque.h"
#include "dixfontstr.h"
#include "closestr.h"
#include "dixfont.h"
#include "xace.h"
#ifdef DEBUG
#include <stdio.h>
#endif
#ifdef PANORAMIX
#include "panoramiX.h"
#endif
#ifdef XF86BIGFONT
#define _XF86BIGFONT_SERVER_
#include <X11/extensions/xf86bigfont.h>
#endif
#define QUERYCHARINFO(pci, pr) *(pr) = (pci)->metrics
extern pointer fosNaturalParams;
extern FontPtr defaultFont;
static FontPathElementPtr *font_path_elements = (FontPathElementPtr *) 0;
static int num_fpes = 0;
_X_EXPORT FPEFunctions *fpe_functions = (FPEFunctions *) 0;
static int num_fpe_types = 0;
static unsigned char *font_path_string;
static int num_slept_fpes = 0;
static int size_slept_fpes = 0;
static FontPathElementPtr *slept_fpes = (FontPathElementPtr *) 0;
static FontPatternCachePtr patternCache;
_X_EXPORT int
FontToXError(err)
int err;
{
switch (err) {
case Successful:
return Success;
case AllocError:
return BadAlloc;
case BadFontName:
return BadName;
case BadFontPath:
case BadFontFormat: /* is there something better? */
case BadCharRange:
return BadValue;
default:
return err;
}
}
/*
* adding RT_FONT prevents conflict with default cursor font
*/
Bool
SetDefaultFont(char *defaultfontname)
{
int err;
FontPtr pf;
XID fid;
fid = FakeClientID(0);
err = OpenFont(serverClient, fid, FontLoadAll | FontOpenSync,
(unsigned) strlen(defaultfontname), defaultfontname);
if (err != Success)
return FALSE;
pf = (FontPtr) LookupIDByType(fid, RT_FONT);
if (pf == (FontPtr) NULL)
return FALSE;
defaultFont = pf;
return TRUE;
}
/*
* note that the font wakeup queue is not refcounted. this is because
* an fpe needs to be added when it's inited, and removed when it's finally
* freed, in order to handle any data that isn't requested, like FS events.
*
* since the only thing that should call these routines is the renderer's
* init_fpe() and free_fpe(), there shouldn't be any problem in using
* freed data.
*/
void
QueueFontWakeup(FontPathElementPtr fpe)
{
int i;
FontPathElementPtr *new;
for (i = 0; i < num_slept_fpes; i++) {
if (slept_fpes[i] == fpe) {
return;
}
}
if (num_slept_fpes == size_slept_fpes) {
new = (FontPathElementPtr *)
xrealloc(slept_fpes,
sizeof(FontPathElementPtr) * (size_slept_fpes + 4));
if (!new)
return;
slept_fpes = new;
size_slept_fpes += 4;
}
slept_fpes[num_slept_fpes] = fpe;
num_slept_fpes++;
}
void
RemoveFontWakeup(FontPathElementPtr fpe)
{
int i,
j;
for (i = 0; i < num_slept_fpes; i++) {
if (slept_fpes[i] == fpe) {
for (j = i; j < num_slept_fpes; j++) {
slept_fpes[j] = slept_fpes[j + 1];
}
num_slept_fpes--;
return;
}
}
}
void
FontWakeup(pointer data, int count, pointer LastSelectMask)
{
int i;
FontPathElementPtr fpe;
if (count < 0)
return;
/* wake up any fpe's that may be waiting for information */
for (i = 0; i < num_slept_fpes; i++) {
fpe = slept_fpes[i];
(void) (*fpe_functions[fpe->type].wakeup_fpe) (fpe, LastSelectMask);
}
}
/* XXX -- these two funcs may want to be broken into macros */
static void
UseFPE(FontPathElementPtr fpe)
{
fpe->refcount++;
}
static void
FreeFPE (FontPathElementPtr fpe)
{
fpe->refcount--;
if (fpe->refcount == 0) {
(*fpe_functions[fpe->type].free_fpe) (fpe);
xfree(fpe->name);
xfree(fpe);
}
}
static Bool
doOpenFont(ClientPtr client, OFclosurePtr c)
{
FontPtr pfont = NullFont;
FontPathElementPtr fpe = NULL;
ScreenPtr pScr;
int err = Successful;
int i;
char *alias,
*newname;
int newlen;
int aliascount = 20;
/*
* Decide at runtime what FontFormat to use.
*/
Mask FontFormat =
((screenInfo.imageByteOrder == LSBFirst) ?
BitmapFormatByteOrderLSB : BitmapFormatByteOrderMSB) |
((screenInfo.bitmapBitOrder == LSBFirst) ?
BitmapFormatBitOrderLSB : BitmapFormatBitOrderMSB) |
BitmapFormatImageRectMin |
#if GLYPHPADBYTES == 1
BitmapFormatScanlinePad8 |
#endif
#if GLYPHPADBYTES == 2
BitmapFormatScanlinePad16 |
#endif
#if GLYPHPADBYTES == 4
BitmapFormatScanlinePad32 |
#endif
#if GLYPHPADBYTES == 8
BitmapFormatScanlinePad64 |
#endif
BitmapFormatScanlineUnit8;
if (client->clientGone)
{
if (c->current_fpe < c->num_fpes)
{
fpe = c->fpe_list[c->current_fpe];
(*fpe_functions[fpe->type].client_died) ((pointer) client, fpe);
}
err = Successful;
goto bail;
}
while (c->current_fpe < c->num_fpes) {
fpe = c->fpe_list[c->current_fpe];
err = (*fpe_functions[fpe->type].open_font)
((pointer) client, fpe, c->flags,
c->fontname, c->fnamelen, FontFormat,
BitmapFormatMaskByte |
BitmapFormatMaskBit |
BitmapFormatMaskImageRectangle |
BitmapFormatMaskScanLinePad |
BitmapFormatMaskScanLineUnit,
c->fontid, &pfont, &alias,
c->non_cachable_font && c->non_cachable_font->fpe == fpe ?
c->non_cachable_font :
(FontPtr)0);
if (err == FontNameAlias && alias) {
newlen = strlen(alias);
newname = (char *) xrealloc(c->fontname, newlen);
if (!newname) {
err = AllocError;
break;
}
memmove(newname, alias, newlen);
c->fontname = newname;
c->fnamelen = newlen;
c->current_fpe = 0;
if (--aliascount <= 0) {
/* We've tried resolving this alias 20 times, we're
* probably stuck in an infinite loop of aliases pointing
* to each other - time to take emergency exit!
*/
err = BadImplementation;
break;
}
continue;
}
if (err == BadFontName) {
c->current_fpe++;
continue;
}
if (err == Suspended) {
if (!c->slept) {
c->slept = TRUE;
ClientSleep(client, (ClientSleepProcPtr)doOpenFont, (pointer) c);
}
return TRUE;
}
break;
}
if (err != Successful)
goto bail;
if (!pfont) {
err = BadFontName;
goto bail;
}
/* check values for firstCol, lastCol, firstRow, and lastRow */
if (pfont->info.firstCol > pfont->info.lastCol ||
pfont->info.firstRow > pfont->info.lastRow ||
pfont->info.lastCol - pfont->info.firstCol > 255) {
err = AllocError;
goto bail;
}
if (!pfont->fpe)
pfont->fpe = fpe;
pfont->refcnt++;
if (pfont->refcnt == 1) {
UseFPE(pfont->fpe);
for (i = 0; i < screenInfo.numScreens; i++) {
pScr = screenInfo.screens[i];
if (pScr->RealizeFont)
{
if (!(*pScr->RealizeFont) (pScr, pfont))
{
CloseFont (pfont, (Font) 0);
err = AllocError;
goto bail;
}
}
}
}
if (!AddResource(c->fontid, RT_FONT, (pointer) pfont)) {
err = AllocError;
goto bail;
}
if (patternCache && pfont != c->non_cachable_font)
CacheFontPattern(patternCache, c->origFontName, c->origFontNameLen,
pfont);
bail:
if (err != Successful && c->client != serverClient) {
SendErrorToClient(c->client, X_OpenFont, 0,
c->fontid, FontToXError(err));
}
if (c->slept)
ClientWakeup(c->client);
for (i = 0; i < c->num_fpes; i++) {
FreeFPE(c->fpe_list[i]);
}
xfree(c->fpe_list);
xfree(c->fontname);
xfree(c);
return TRUE;
}
int
OpenFont(ClientPtr client, XID fid, Mask flags, unsigned lenfname, char *pfontname)
{
OFclosurePtr c;
int i;
FontPtr cached = (FontPtr)0;
#ifdef FONTDEBUG
char *f;
f = (char *)xalloc(lenfname + 1);
memmove(f, pfontname, lenfname);
f[lenfname] = '\0';
ErrorF("OpenFont: fontname is \"%s\"\n", f);
xfree(f);
#endif
if (!lenfname || lenfname > XLFDMAXFONTNAMELEN)
return BadName;
if (patternCache)
{
/*
** Check name cache. If we find a cached version of this font that
** is cachable, immediately satisfy the request with it. If we find
** a cached version of this font that is non-cachable, we do not
** satisfy the request with it. Instead, we pass the FontPtr to the
** FPE's open_font code (the fontfile FPE in turn passes the
** information to the rasterizer; the fserve FPE ignores it).
**
** Presumably, the font is marked non-cachable because the FPE has
** put some licensing restrictions on it. If the FPE, using
** whatever logic it relies on, determines that it is willing to
** share this existing font with the client, then it has the option
** to return the FontPtr we passed it as the newly-opened font.
** This allows the FPE to exercise its licensing logic without
** having to create another instance of a font that already exists.
*/
cached = FindCachedFontPattern(patternCache, pfontname, lenfname);
if (cached && cached->info.cachable)
{
if (!AddResource(fid, RT_FONT, (pointer) cached))
return BadAlloc;
cached->refcnt++;
return Success;
}
}
c = (OFclosurePtr) xalloc(sizeof(OFclosureRec));
if (!c)
return BadAlloc;
c->fontname = (char *) xalloc(lenfname);
c->origFontName = pfontname;
c->origFontNameLen = lenfname;
if (!c->fontname) {
xfree(c);
return BadAlloc;
}
/*
* copy the current FPE list, so that if it gets changed by another client
* while we're blocking, the request still appears atomic
*/
c->fpe_list = (FontPathElementPtr *)
xalloc(sizeof(FontPathElementPtr) * num_fpes);
if (!c->fpe_list) {
xfree(c->fontname);
xfree(c);
return BadAlloc;
}
memmove(c->fontname, pfontname, lenfname);
for (i = 0; i < num_fpes; i++) {
c->fpe_list[i] = font_path_elements[i];
UseFPE(c->fpe_list[i]);
}
c->client = client;
c->fontid = fid;
c->current_fpe = 0;
c->num_fpes = num_fpes;
c->fnamelen = lenfname;
c->slept = FALSE;
c->flags = flags;
c->non_cachable_font = cached;
(void) doOpenFont(client, c);
return Success;
}
/**
* Decrement font's ref count, and free storage if ref count equals zero
*
* \param value must conform to DeleteType
*/
_X_EXPORT int
CloseFont(pointer value, XID fid)
{
int nscr;
ScreenPtr pscr;
FontPathElementPtr fpe;
FontPtr pfont = (FontPtr)value;
if (pfont == NullFont)
return (Success);
if (--pfont->refcnt == 0) {
if (patternCache)
RemoveCachedFontPattern (patternCache, pfont);
/*
* since the last reference is gone, ask each screen to free any
* storage it may have allocated locally for it.
*/
for (nscr = 0; nscr < screenInfo.numScreens; nscr++) {
pscr = screenInfo.screens[nscr];
if (pscr->UnrealizeFont)
(*pscr->UnrealizeFont) (pscr, pfont);
}
if (pfont == defaultFont)
defaultFont = NULL;
#ifdef XF86BIGFONT
XF86BigfontFreeFontShm(pfont);
#endif
fpe = pfont->fpe;
(*fpe_functions[fpe->type].close_font) (fpe, pfont);
FreeFPE(fpe);
}
return (Success);
}
/***====================================================================***/
/**
* Sets up pReply as the correct QueryFontReply for pFont with the first
* nProtoCCIStructs char infos.
*
* \param pReply caller must allocate this storage
*/
void
QueryFont(FontPtr pFont, xQueryFontReply *pReply, int nProtoCCIStructs)
{
FontPropPtr pFP;
int r,
c,
i;
xFontProp *prFP;
xCharInfo *prCI;
xCharInfo *charInfos[256];
unsigned char chars[512];
int ninfos;
unsigned long ncols;
unsigned long count;
/* pr->length set in dispatch */
pReply->minCharOrByte2 = pFont->info.firstCol;
pReply->defaultChar = pFont->info.defaultCh;
pReply->maxCharOrByte2 = pFont->info.lastCol;
pReply->drawDirection = pFont->info.drawDirection;
pReply->allCharsExist = pFont->info.allExist;
pReply->minByte1 = pFont->info.firstRow;
pReply->maxByte1 = pFont->info.lastRow;
pReply->fontAscent = pFont->info.fontAscent;
pReply->fontDescent = pFont->info.fontDescent;
pReply->minBounds = pFont->info.ink_minbounds;
pReply->maxBounds = pFont->info.ink_maxbounds;
pReply->nFontProps = pFont->info.nprops;
pReply->nCharInfos = nProtoCCIStructs;
for (i = 0, pFP = pFont->info.props, prFP = (xFontProp *) (&pReply[1]);
i < pFont->info.nprops;
i++, pFP++, prFP++) {
prFP->name = pFP->name;
prFP->value = pFP->value;
}
ninfos = 0;
ncols = (unsigned long) (pFont->info.lastCol - pFont->info.firstCol + 1);
prCI = (xCharInfo *) (prFP);
for (r = pFont->info.firstRow;
ninfos < nProtoCCIStructs && r <= (int)pFont->info.lastRow;
r++) {
i = 0;
for (c = pFont->info.firstCol; c <= (int)pFont->info.lastCol; c++) {
chars[i++] = r;
chars[i++] = c;
}
(*pFont->get_metrics) (pFont, ncols, chars,
TwoD16Bit, &count, charInfos);
i = 0;
for (i = 0; i < (int) count && ninfos < nProtoCCIStructs; i++) {
*prCI = *charInfos[i];
prCI++;
ninfos++;
}
}
return;
}
static Bool
doListFontsAndAliases(ClientPtr client, LFclosurePtr c)
{
FontPathElementPtr fpe;
int err = Successful;
FontNamesPtr names = NULL;
char *name, *resolved=NULL;
int namelen, resolvedlen;
int nnames;
int stringLens;
int i;
xListFontsReply reply;
char *bufptr;
char *bufferStart;
int aliascount = 0;
if (client->clientGone)
{
if (c->current.current_fpe < c->num_fpes)
{
fpe = c->fpe_list[c->current.current_fpe];
(*fpe_functions[fpe->type].client_died) ((pointer) client, fpe);
}
err = Successful;
goto bail;
}
if (!c->current.patlen)
goto finish;
while (c->current.current_fpe < c->num_fpes) {
fpe = c->fpe_list[c->current.current_fpe];
err = Successful;
if (!fpe_functions[fpe->type].start_list_fonts_and_aliases)
{
/* This FPE doesn't support/require list_fonts_and_aliases */
err = (*fpe_functions[fpe->type].list_fonts)
((pointer) c->client, fpe, c->current.pattern,
c->current.patlen, c->current.max_names - c->names->nnames,
c->names);
if (err == Suspended) {
if (!c->slept) {
c->slept = TRUE;
ClientSleep(client,
(ClientSleepProcPtr)doListFontsAndAliases,
(pointer) c);
}
return TRUE;
}
err = BadFontName;
}
else
{
/* Start of list_fonts_and_aliases functionality. Modeled
after list_fonts_with_info in that it resolves aliases,
except that the information collected from FPEs is just
names, not font info. Each list_next_font_or_alias()
returns either a name into name/namelen or an alias into
name/namelen and its target name into resolved/resolvedlen.
The code at this level then resolves the alias by polling
the FPEs. */
if (!c->current.list_started) {
err = (*fpe_functions[fpe->type].start_list_fonts_and_aliases)
((pointer) c->client, fpe, c->current.pattern,
c->current.patlen, c->current.max_names - c->names->nnames,
&c->current.private);
if (err == Suspended) {
if (!c->slept) {
ClientSleep(client,
(ClientSleepProcPtr)doListFontsAndAliases,
(pointer) c);
c->slept = TRUE;
}
return TRUE;
}
if (err == Successful)
c->current.list_started = TRUE;
}
if (err == Successful) {
char *tmpname;
name = 0;
err = (*fpe_functions[fpe->type].list_next_font_or_alias)
((pointer) c->client, fpe, &name, &namelen, &tmpname,
&resolvedlen, c->current.private);
if (err == Suspended) {
if (!c->slept) {
ClientSleep(client,
(ClientSleepProcPtr)doListFontsAndAliases,
(pointer) c);
c->slept = TRUE;
}
return TRUE;
}
if (err == FontNameAlias) {
if (resolved) xfree(resolved);
resolved = (char *) xalloc(resolvedlen + 1);
if (resolved)
memmove(resolved, tmpname, resolvedlen + 1);
}
}
if (err == Successful)
{
if (c->haveSaved)
{
if (c->savedName)
(void)AddFontNamesName(c->names, c->savedName,
c->savedNameLen);
}
else
(void)AddFontNamesName(c->names, name, namelen);
}
/*
* When we get an alias back, save our state and reset back to
* the start of the FPE looking for the specified name. As
* soon as a real font is found for the alias, pop back to the
* old state
*/
else if (err == FontNameAlias) {
char tmp_pattern[XLFDMAXFONTNAMELEN];
/*
* when an alias recurses, we need to give
* the last FPE a chance to clean up; so we call
* it again, and assume that the error returned
* is BadFontName, indicating the alias resolution
* is complete.
*/
memmove(tmp_pattern, resolved, resolvedlen);
if (c->haveSaved)
{
char *tmpname;
int tmpnamelen;
tmpname = 0;
(void) (*fpe_functions[fpe->type].list_next_font_or_alias)
((pointer) c->client, fpe, &tmpname, &tmpnamelen,
&tmpname, &tmpnamelen, c->current.private);
if (--aliascount <= 0)
{
err = BadFontName;
goto ContBadFontName;
}
}
else
{
c->saved = c->current;
c->haveSaved = TRUE;
if (c->savedName)
xfree(c->savedName);
c->savedName = (char *)xalloc(namelen + 1);
if (c->savedName)
memmove(c->savedName, name, namelen + 1);
c->savedNameLen = namelen;
aliascount = 20;
}
memmove(c->current.pattern, tmp_pattern, resolvedlen);
c->current.patlen = resolvedlen;
c->current.max_names = c->names->nnames + 1;
c->current.current_fpe = -1;
c->current.private = 0;
err = BadFontName;
}
}
/*
* At the end of this FPE, step to the next. If we've finished
* processing an alias, pop state back. If we've collected enough
* font names, quit.
*/
if (err == BadFontName) {
ContBadFontName: ;
c->current.list_started = FALSE;
c->current.current_fpe++;
err = Successful;
if (c->haveSaved)
{
if (c->names->nnames == c->current.max_names ||
c->current.current_fpe == c->num_fpes) {
c->haveSaved = FALSE;
c->current = c->saved;
/* Give the saved namelist a chance to clean itself up */
continue;
}
}
if (c->names->nnames == c->current.max_names)
break;
}
}
/*
* send the reply
*/
if (err != Successful) {
SendErrorToClient(client, X_ListFonts, 0, 0, FontToXError(err));
goto bail;
}
finish:
names = c->names;
nnames = names->nnames;
client = c->client;
stringLens = 0;
for (i = 0; i < nnames; i++)
stringLens += (names->length[i] <= 255) ? names->length[i] : 0;
reply.type = X_Reply;
reply.length = (stringLens + nnames + 3) >> 2;
reply.nFonts = nnames;
reply.sequenceNumber = client->sequence;
bufptr = bufferStart = (char *) xalloc(reply.length << 2);
if (!bufptr && reply.length) {
SendErrorToClient(client, X_ListFonts, 0, 0, BadAlloc);
goto bail;
}
/*
* since WriteToClient long word aligns things, copy to temp buffer and
* write all at once
*/
for (i = 0; i < nnames; i++) {
if (names->length[i] > 255)
reply.nFonts--;
else
{
*bufptr++ = names->length[i];
memmove( bufptr, names->names[i], names->length[i]);
bufptr += names->length[i];
}
}
nnames = reply.nFonts;
reply.length = (stringLens + nnames + 3) >> 2;
client->pSwapReplyFunc = ReplySwapVector[X_ListFonts];
WriteSwappedDataToClient(client, sizeof(xListFontsReply), &reply);
(void) WriteToClient(client, stringLens + nnames, bufferStart);
xfree(bufferStart);
bail:
if (c->slept)
ClientWakeup(client);
for (i = 0; i < c->num_fpes; i++)
FreeFPE(c->fpe_list[i]);
xfree(c->fpe_list);
if (c->savedName) xfree(c->savedName);
FreeFontNames(names);
xfree(c);
if (resolved) xfree(resolved);
return TRUE;
}
int
ListFonts(ClientPtr client, unsigned char *pattern, unsigned length,
unsigned max_names)
{
int i;
LFclosurePtr c;
/*
* The right error to return here would be BadName, however the
* specification does not allow for a Name error on this request.
* Perhaps a better solution would be to return a nil list, i.e.
* a list containing zero fontnames.
*/
if (length > XLFDMAXFONTNAMELEN)
return BadAlloc;
i = XaceHook(XACE_SERVER_ACCESS, client, DixGetAttrAccess);
if (i != Success)
return i;
if (!(c = (LFclosurePtr) xalloc(sizeof *c)))
return BadAlloc;
c->fpe_list = (FontPathElementPtr *)
xalloc(sizeof(FontPathElementPtr) * num_fpes);
if (!c->fpe_list) {
xfree(c);
return BadAlloc;
}
c->names = MakeFontNamesRecord(max_names < 100 ? max_names : 100);
if (!c->names)
{
xfree(c->fpe_list);
xfree(c);
return BadAlloc;
}
memmove( c->current.pattern, pattern, length);
for (i = 0; i < num_fpes; i++) {
c->fpe_list[i] = font_path_elements[i];
UseFPE(c->fpe_list[i]);
}
c->client = client;
c->num_fpes = num_fpes;
c->current.patlen = length;
c->current.current_fpe = 0;
c->current.max_names = max_names;
c->current.list_started = FALSE;
c->current.private = 0;
c->haveSaved = FALSE;
c->slept = FALSE;
c->savedName = 0;
doListFontsAndAliases(client, c);
return Success;
}
int
doListFontsWithInfo(ClientPtr client, LFWIclosurePtr c)
{
FontPathElementPtr fpe;
int err = Successful;
char *name;
int namelen;
int numFonts;
FontInfoRec fontInfo,
*pFontInfo;
xListFontsWithInfoReply *reply;
int length;
xFontProp *pFP;
int i;
int aliascount = 0;
xListFontsWithInfoReply finalReply;
if (client->clientGone)
{
if (c->current.current_fpe < c->num_fpes)
{
fpe = c->fpe_list[c->current.current_fpe];
(*fpe_functions[fpe->type].client_died) ((pointer) client, fpe);
}
err = Successful;
goto bail;
}
client->pSwapReplyFunc = ReplySwapVector[X_ListFontsWithInfo];
if (!c->current.patlen)
goto finish;
while (c->current.current_fpe < c->num_fpes)
{
fpe = c->fpe_list[c->current.current_fpe];
err = Successful;
if (!c->current.list_started)
{
err = (*fpe_functions[fpe->type].start_list_fonts_with_info)
(client, fpe, c->current.pattern, c->current.patlen,
c->current.max_names, &c->current.private);
if (err == Suspended)
{
if (!c->slept)
{
ClientSleep(client, (ClientSleepProcPtr)doListFontsWithInfo, c);
c->slept = TRUE;
}
return TRUE;
}
if (err == Successful)
c->current.list_started = TRUE;
}
if (err == Successful)
{
name = 0;
pFontInfo = &fontInfo;
err = (*fpe_functions[fpe->type].list_next_font_with_info)
(client, fpe, &name, &namelen, &pFontInfo,
&numFonts, c->current.private);
if (err == Suspended)
{
if (!c->slept)
{
ClientSleep(client,
(ClientSleepProcPtr)doListFontsWithInfo,
c);
c->slept = TRUE;
}
return TRUE;
}
}
/*
* When we get an alias back, save our state and reset back to the
* start of the FPE looking for the specified name. As soon as a real
* font is found for the alias, pop back to the old state
*/
if (err == FontNameAlias)
{
/*
* when an alias recurses, we need to give
* the last FPE a chance to clean up; so we call
* it again, and assume that the error returned
* is BadFontName, indicating the alias resolution
* is complete.
*/
if (c->haveSaved)
{
char *tmpname;
int tmpnamelen;
FontInfoPtr tmpFontInfo;
tmpname = 0;
tmpFontInfo = &fontInfo;
(void) (*fpe_functions[fpe->type].list_next_font_with_info)
(client, fpe, &tmpname, &tmpnamelen, &tmpFontInfo,
&numFonts, c->current.private);
if (--aliascount <= 0)
{
err = BadFontName;
goto ContBadFontName;
}
}
else
{
c->saved = c->current;
c->haveSaved = TRUE;
c->savedNumFonts = numFonts;
if (c->savedName)
xfree(c->savedName);
c->savedName = (char *)xalloc(namelen + 1);
if (c->savedName)
memmove(c->savedName, name, namelen + 1);
aliascount = 20;
}