path: root/src/fontfile/fontdir.c

/*

Copyright 1991, 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.

*/

/*
 * Author:  Keith Packard, MIT X Consortium
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include    <X11/fonts/fntfilst.h>
#include    <X11/keysym.h>

#if HAVE_STDINT_H
#include <stdint.h>
#elif !defined(INT32_MAX)
#define INT32_MAX 0x7fffffff
#endif

Bool
FontFileInitTable (FontTablePtr table, int size)
{
    if (size < 0 || (size > INT32_MAX/sizeof(FontEntryRec)))
	return FALSE;
    if (size)
    {
	table->entries = malloc(sizeof(FontEntryRec) * size);
	if (!table->entries)
	    return FALSE;
    }
    else
	table->entries = 0;
    table->used = 0;
    table->size = size;
    table->sorted = FALSE;
    return TRUE;
}

void
FontFileFreeEntry (FontEntryPtr entry)
{
    FontScalableExtraPtr   extra;
    int i;

    if (entry->name.name)
	free(entry->name.name);
    entry->name.name = NULL;

    switch (entry->type)
    {
    case FONT_ENTRY_SCALABLE:
	free (entry->u.scalable.fileName);
	extra = entry->u.scalable.extra;
	for (i = 0; i < extra->numScaled; i++)
	    if (extra->scaled[i].vals.ranges)
		free (extra->scaled[i].vals.ranges);
	free (extra->scaled);
	free (extra);
	break;
    case FONT_ENTRY_BITMAP:
	free (entry->u.bitmap.fileName);
	entry->u.bitmap.fileName = NULL;
	break;
    case FONT_ENTRY_ALIAS:
	free (entry->u.alias.resolved);
	entry->u.alias.resolved = NULL;
	break;
    }
}

void
FontFileFreeTable (FontTablePtr table)
{
    int	i;

    for (i = 0; i < table->used; i++)
	FontFileFreeEntry (&table->entries[i]);
    free (table->entries);
}

FontDirectoryPtr
FontFileMakeDir(const char *dirName, int size)
{
    FontDirectoryPtr	dir;
    int			dirlen;
    int			needslash = 0;
    const char		*attrib;
    int			attriblen;

#if !defined(WIN32)
    attrib = strchr(dirName, ':');
#else
    /* OS/2 uses the colon in the drive letter descriptor, skip this */
    attrib = strchr(dirName+2, ':');
#endif
    if (attrib) {
	dirlen = attrib - dirName;
	attriblen = strlen(attrib);
    } else {
	dirlen = strlen(dirName);
	attriblen = 0;
    }
    if (dirName[dirlen - 1] != '/')
#ifdef NCD
    if (dirlen)     /* leave out slash for builtins */
#endif
	needslash = 1;
    dir = malloc(sizeof *dir + dirlen + needslash + 1 +
		 (attriblen ? attriblen + 1 : 0));
    if (!dir)
	return (FontDirectoryPtr)0;
    if (!FontFileInitTable (&dir->scalable, 0))
    {
	free (dir);
	return (FontDirectoryPtr)0;
    }
    if (!FontFileInitTable (&dir->nonScalable, size))
    {
	FontFileFreeTable (&dir->scalable);
	free (dir);
	return (FontDirectoryPtr)0;
    }
    dir->directory = (char *) (dir + 1);
    dir->dir_mtime = 0;
    dir->alias_mtime = 0;
    if (attriblen)
	dir->attributes = dir->directory + dirlen + needslash + 1;
    else
	dir->attributes = NULL;
    strncpy(dir->directory, dirName, dirlen);
    dir->directory[dirlen] = '\0';
    if (dir->attributes)
	strcpy(dir->attributes, attrib);
    if (needslash)
	strcat(dir->directory, "/");
    return dir;
}

void
FontFileFreeDir (FontDirectoryPtr dir)
{
    FontFileFreeTable (&dir->scalable);
    FontFileFreeTable (&dir->nonScalable);
    free(dir);
}

FontEntryPtr
FontFileAddEntry(FontTablePtr table, FontEntryPtr prototype)
{
    FontEntryPtr    entry;
    int		    newsize;

    /* can't add entries to a sorted table, pointers get broken! */
    if (table->sorted)
	return (FontEntryPtr) 0;    /* "cannot" happen */
    if (table->used == table->size) {
	newsize = table->size + 100;
	entry = realloc(table->entries, newsize * sizeof(FontEntryRec));
	if (!entry)
	    return (FontEntryPtr)0;
	table->size = newsize;
	table->entries = entry;
    }
    entry = &table->entries[table->used];
    *entry = *prototype;
    entry->name.name = malloc(prototype->name.length + 1);
    if (!entry->name.name)
	return (FontEntryPtr)0;
    memcpy (entry->name.name, prototype->name.name, prototype->name.length);
    entry->name.name[entry->name.length] = '\0';
    table->used++;
    return entry;
}

/*
 * Compare two strings just like strcmp, but preserve decimal integer
 * sorting order, i.e. "2" < "10" or "iso8859-2" < "iso8859-10" <
 * "iso10646-1". Strings are sorted as if sequences of digits were
 * prefixed by a length indicator (i.e., does not ignore leading zeroes).
 *
 * Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
 */
#define Xisdigit(c) ('\060' <= (c) && (c) <= '\071')

static int strcmpn(const char *s1, const char *s2)
{
    int digits, predigits = 0;
    const char *ss1, *ss2;

    while (1) {
	if (*s1 == 0 && *s2 == 0)
	    return 0;
	digits = Xisdigit(*s1) && Xisdigit(*s2);
	if (digits && !predigits) {
	    ss1 = s1;
	    ss2 = s2;
	    while (Xisdigit(*ss1) && Xisdigit(*ss2))
		ss1++, ss2++;
	    if (!Xisdigit(*ss1) && Xisdigit(*ss2))
		return -1;
	    if (Xisdigit(*ss1) && !Xisdigit(*ss2))
		return 1;
	}
	if ((unsigned char)*s1 < (unsigned char)*s2)
	    return -1;
	if ((unsigned char)*s1 > (unsigned char)*s2)
	    return 1;
	predigits = digits;
	s1++, s2++;
    }
}


static int
FontFileNameCompare(const void* a, const void* b)
{
    FontEntryPtr    a_name = (FontEntryPtr) a,
		    b_name = (FontEntryPtr) b;

    return strcmpn(a_name->name.name, b_name->name.name);
}

void
FontFileSortTable (FontTablePtr table)
{
    if (!table->sorted) {
	qsort((char *) table->entries, table->used, sizeof(FontEntryRec),
	      FontFileNameCompare);
	table->sorted = TRUE;
    }
}

void
FontFileSortDir(FontDirectoryPtr dir)
{
    FontFileSortTable (&dir->scalable);
    FontFileSortTable (&dir->nonScalable);
    /* now that the table is fixed in size, swizzle the pointers */
    FontFileSwitchStringsToBitmapPointers (dir);
}

/*
  Given a Font Table, SetupWildMatch() sets up various pointers and state
  information so the table can be searched for name(s) that match a given
  fontname pattern -- which may contain wildcards.  Under certain
  circumstances, SetupWildMatch() will find the one table entry that
  matches the pattern.  If those circumstances do not pertain,
  SetupWildMatch() returns a range within the the table that should be
  searched for matching name(s).  With the information established by
  SetupWildMatch(), including state information in "private", the
  PatternMatch() procedure is then used to test names in the range for a
  match.
*/

#define isWild(c)   ((c) == XK_asterisk || (c) == XK_question)
#define isDigit(c)  (XK_0 <= (c) && (c) <= XK_9)

static int
SetupWildMatch(FontTablePtr table, FontNamePtr pat,
	       int *leftp, int *rightp, int *privatep)
{
    int         nDashes;
    char        c;
    char       *t;
    char       *firstWild;
    char       *firstDigit;
    int         first;
    int         center,
                left,
                right;
    int         result;
    char	*name;

    name = pat->name;
    nDashes = pat->ndashes;
    firstWild = 0;
    firstDigit = 0;
    t = name;
    while ((c = *t++)) {
	if (isWild(c)) {
	    if (!firstWild)
		firstWild = t - 1;
	}
	if (isDigit(c)) {
	    if (!firstDigit)
		firstDigit = t - 1;
	}
    }
    left = 0;
    right = table->used;
    if (firstWild)
	*privatep = nDashes;
    else
	*privatep = -1;
    if (!table->sorted) {
	*leftp = left;
	*rightp = right;
	return -1;
    } else if (firstWild) {
	if (firstDigit && firstDigit < firstWild)
	    first = firstDigit - name;
	else
	    first = firstWild - name;
	while (left < right) {
	    center = (left + right) / 2;
	    result = strncmp(name, table->entries[center].name.name, first);
	    if (result == 0)
		break;
	    if (result < 0)
		right = center;
	    else
		left = center + 1;
	}
	*leftp = left;
	*rightp = right;
	return -1;
    } else {
	while (left < right) {
	    center = (left + right) / 2;
	    result = strcmpn(name, table->entries[center].name.name);
	    if (result == 0)
		return center;
	    if (result < 0)
		right = center;
	    else
		left = center + 1;
	}
	*leftp = 1;
	*rightp = 0;
	return -1;
    }
}

static int
PatternMatch(char *pat, int patdashes, char *string, int stringdashes)
{
    char        c,
                t;

    if (stringdashes < patdashes)
	return 0;
    for (;;) {
	switch (c = *pat++) {
	case '*':
	    if (!(c = *pat++))
		return 1;
	    if (c == XK_minus) {
		patdashes--;
		for (;;) {
		    while ((t = *string++) != XK_minus)
			if (!t)
			    return 0;
		    stringdashes--;
		    if (PatternMatch(pat, patdashes, string, stringdashes))
			return 1;
		    if (stringdashes == patdashes)
			return 0;
		}
	    } else {
		for (;;) {
		    while ((t = *string++) != c) {
			if (!t)
			    return 0;
			if (t == XK_minus) {
			    if (stringdashes-- < patdashes)
				return 0;
			}
		    }
		    if (PatternMatch(pat, patdashes, string, stringdashes))
			return 1;
		}
	    }
	case '?':
	    if (*string++ == XK_minus)
		stringdashes--;
	    break;
	case '\0':
	    return (*string == '\0');
	case XK_minus:
	    if (*string++ == XK_minus) {
		patdashes--;
		stringdashes--;
		break;
	    }
	    return 0;
	default:
	    if (c == *string++)
		break;
	    return 0;
	}
    }
}

int
FontFileCountDashes (char *name, int namelen)
{
    int	ndashes = 0;

    while (namelen--)
	if (*name++ == '\055')	/* avoid non ascii systems */
	    ++ndashes;
    return ndashes;
}

char *
FontFileSaveString (char *s)
{
    char    *n;

    n = malloc (strlen (s) + 1);
    if (!n)
	return 0;
    strcpy (n, s);
    return n;
}

FontEntryPtr
FontFileFindNameInScalableDir(FontTablePtr table, FontNamePtr pat,
			      FontScalablePtr vals)
{
    int         i,
                start,
                stop,
                res,
                private;
    FontNamePtr	name;

    if (!table->entries)
	return NULL;
    if ((i = SetupWildMatch(table, pat, &start, &stop, &private)) >= 0)
	return &table->entries[i];
    for (i = start; i < stop; i++) {
	name = &table->entries[i].name;
	res = PatternMatch(pat->name, private, name->name, name->ndashes);
	if (res > 0)
	{
	    /* Check to see if enhancements requested are available */
	    if (vals)
	    {
		int vs = vals->values_supplied;
		int cap;

		if (table->entries[i].type == FONT_ENTRY_SCALABLE)
		    cap = table->entries[i].u.scalable.renderer->capabilities;
		else if (table->entries[i].type == FONT_ENTRY_ALIAS)
		    cap = ~0;	/* Calling code will have to see if true */
		else
		    cap = 0;
		if ((((vs & PIXELSIZE_MASK) == PIXELSIZE_ARRAY ||
		      (vs & POINTSIZE_MASK) == POINTSIZE_ARRAY) &&
		     !(cap & CAP_MATRIX)) ||
		    ((vs & CHARSUBSET_SPECIFIED) &&
		     !(cap & CAP_CHARSUBSETTING)))
		    continue;
	    }
	    return &table->entries[i];
	}
	if (res < 0)
	    break;
    }
    return (FontEntryPtr)0;
}

FontEntryPtr
FontFileFindNameInDir(FontTablePtr table, FontNamePtr pat)
{
    return FontFileFindNameInScalableDir(table, pat, (FontScalablePtr)0);
}

int
FontFileFindNamesInScalableDir(FontTablePtr table, FontNamePtr pat, int max,
			       FontNamesPtr names, FontScalablePtr vals,
			       int alias_behavior, int *newmax)
{
    int		    i,
		    start,
		    stop,
		    res,
		    private;
    int		    ret = Successful;
    FontEntryPtr    fname;
    FontNamePtr	    name;

    if (max <= 0)
	return Successful;
    if ((i = SetupWildMatch(table, pat, &start, &stop, &private)) >= 0) {
	if (alias_behavior == NORMAL_ALIAS_BEHAVIOR ||
	    table->entries[i].type != FONT_ENTRY_ALIAS)
	{
	    name = &table->entries[i].name;
	    if (newmax) *newmax = max - 1;
	    return AddFontNamesName(names, name->name, name->length);
	}
	start = i;
	stop = i + 1;
    }
    for (i = start, fname = &table->entries[start]; i < stop; i++, fname++) {
	res = PatternMatch(pat->name, private, fname->name.name, fname->name.ndashes);
	if (res > 0) {
	    if (vals)
	    {
		int vs = vals->values_supplied;
		int cap;

		if (fname->type == FONT_ENTRY_SCALABLE)
		    cap = fname->u.scalable.renderer->capabilities;
		else if (fname->type == FONT_ENTRY_ALIAS)
		    cap = ~0;	/* Calling code will have to see if true */
		else
		    cap = 0;
		if ((((vs & PIXELSIZE_MASK) == PIXELSIZE_ARRAY ||
		     (vs & POINTSIZE_MASK) == POINTSIZE_ARRAY) &&
		    !(cap & CAP_MATRIX)) ||
		    ((vs & CHARSUBSET_SPECIFIED) &&
		    !(cap & CAP_CHARSUBSETTING)))
		    continue;
	    }

	    if ((alias_behavior & IGNORE_SCALABLE_ALIASES) &&
		fname->type == FONT_ENTRY_ALIAS)
	    {
		FontScalableRec	tmpvals;
		if (FontParseXLFDName (fname->name.name, &tmpvals,
				       FONT_XLFD_REPLACE_NONE) &&
		    !(tmpvals.values_supplied & SIZE_SPECIFY_MASK))
		    continue;
	    }

	    ret = AddFontNamesName(names, fname->name.name, fname->name.length);
	    if (ret != Successful)
		goto bail;

	    /* If alias_behavior is LIST_ALIASES_AND_TARGET_NAMES, mark
	       this entry as an alias by negating its length and follow
	       it by the resolved name */
	    if ((alias_behavior & LIST_ALIASES_AND_TARGET_NAMES) &&
		fname->type == FONT_ENTRY_ALIAS)
	    {
		names->length[names->nnames - 1] =
		    -names->length[names->nnames - 1];
		ret = AddFontNamesName(names, fname->u.alias.resolved,
				       strlen(fname->u.alias.resolved));
		if (ret != Successful)
		    goto bail;
	    }

	    if (--max <= 0)
		break;
	} else if (res < 0)
	    break;
    }
  bail: ;
    if (newmax) *newmax = max;
    return ret;
}

int
FontFileFindNamesInDir(FontTablePtr table, FontNamePtr pat,
		       int max, FontNamesPtr names)
{
    return FontFileFindNamesInScalableDir(table, pat, max, names,
					  (FontScalablePtr)0,
					  NORMAL_ALIAS_BEHAVIOR, (int *)0);
}

Bool
FontFileMatchName(char *name, int length, FontNamePtr pat)
{
    /* Perform a fontfile-type name match on a single name */
    FontTableRec table;
    FontEntryRec entries[1];

    /* Dummy up a table */
    table.used = 1;
    table.size = 1;
    table.sorted = TRUE;
    table.entries = entries;
    entries[0].name.name = name;
    entries[0].name.length = length;
    entries[0].name.ndashes = FontFileCountDashes(name, length);

    return FontFileFindNameInDir(&table, pat) != (FontEntryPtr)0;
}

/*
 * Add a font file to a directory.  This handles bitmap and
 * scalable names both
 */

Bool
FontFileAddFontFile (FontDirectoryPtr dir, char *fontName, char *fileName)
{
    FontEntryRec	    entry;
    FontScalableRec	    vals, zeroVals;
    FontRendererPtr	    renderer;
    FontEntryPtr	    existing;
    FontScalableExtraPtr    extra;
    FontEntryPtr	    bitmap = 0, scalable;
    Bool		    isscale;
    Bool		    scalable_xlfd;

    renderer = FontFileMatchRenderer (fileName);
    if (!renderer)
	return FALSE;
    entry.name.length = strlen (fontName);
    if (entry.name.length > MAXFONTNAMELEN)
	entry.name.length = MAXFONTNAMELEN;
    entry.name.name = fontName;
    CopyISOLatin1Lowered (entry.name.name, fontName, entry.name.length);
    entry.name.ndashes = FontFileCountDashes (entry.name.name, entry.name.length);
    entry.name.name[entry.name.length] = '\0';
    /*
     * Add a bitmap name if the incoming name isn't an XLFD name, or
     * if it isn't a scalable name (i.e. non-zero scalable fields)
     *
     * If name of bitmapped font contains XLFD enhancements, do not add
     * a scalable version of the name... this can lead to confusion and
     * ambiguity between the font name and the field enhancements.
     */
    isscale = entry.name.ndashes == 14 &&
	      FontParseXLFDName(entry.name.name,
				&vals, FONT_XLFD_REPLACE_NONE) &&
	      (vals.values_supplied & PIXELSIZE_MASK) != PIXELSIZE_ARRAY &&
	      (vals.values_supplied & POINTSIZE_MASK) != POINTSIZE_ARRAY &&
	      !(vals.values_supplied & ENHANCEMENT_SPECIFY_MASK);
#define UNSCALED_ATTRIB "unscaled"
    scalable_xlfd = (isscale &&
		(((vals.values_supplied & PIXELSIZE_MASK) == 0) ||
		 ((vals.values_supplied & POINTSIZE_MASK) == 0)));
    /*
     * For scalable fonts without a scalable XFLD, check if the "unscaled"
     * attribute is present.
     */
    if (isscale && !scalable_xlfd &&
	    dir->attributes && dir->attributes[0] == ':') {
	char *ptr1 = dir->attributes + 1;
	char *ptr2;
	int length;
	int uslength = strlen(UNSCALED_ATTRIB);

	do {
	    ptr2 = strchr(ptr1, ':');
	    if (ptr2)
		length = ptr2 - ptr1;
	    else
		length = dir->attributes + strlen(dir->attributes) - ptr1;
	    if (length == uslength && !strncmp(ptr1, UNSCALED_ATTRIB, uslength))
		isscale = FALSE;
	    if (ptr2)
		ptr1 = ptr2 + 1;
	} while (ptr2);
    }
    if (!isscale || (vals.values_supplied & SIZE_SPECIFY_MASK))
    {
      /*
       * If the renderer doesn't support OpenBitmap, FontFileOpenFont
       * will still do the right thing.
       */
	entry.type = FONT_ENTRY_BITMAP;
	entry.u.bitmap.renderer = renderer;
	entry.u.bitmap.pFont = NullFont;
	if (!(entry.u.bitmap.fileName = FontFileSaveString (fileName)))
	    return FALSE;
	if (!(bitmap = FontFileAddEntry (&dir->nonScalable, &entry)))
	{
	    free (entry.u.bitmap.fileName);
	    return FALSE;
	}
    }
    /*
     * Parse out scalable fields from XLFD names - a scalable name
     * just gets inserted, a scaled name has more things to do.
     */
    if (isscale)
    {
	if (vals.values_supplied & SIZE_SPECIFY_MASK)
	{
	    bzero((char *)&zeroVals, sizeof(zeroVals));
	    zeroVals.x = vals.x;
	    zeroVals.y = vals.y;
	    zeroVals.values_supplied = PIXELSIZE_SCALAR | POINTSIZE_SCALAR;
	    FontParseXLFDName (entry.name.name, &zeroVals,
			       FONT_XLFD_REPLACE_VALUE);
	    entry.name.length = strlen (entry.name.name);
	    existing = FontFileFindNameInDir (&dir->scalable, &entry.name);
	    if (existing)
	    {
		if ((vals.values_supplied & POINTSIZE_MASK) ==
			POINTSIZE_SCALAR &&
		    (int)(vals.point_matrix[3] * 10) == GetDefaultPointSize())
		{
		    existing->u.scalable.extra->defaults = vals;

		    free (existing->u.scalable.fileName);
		    if (!(existing->u.scalable.fileName = FontFileSaveString (fileName)))
			return FALSE;
		}
                if(bitmap)
                {
                    FontFileCompleteXLFD(&vals, &vals);
                    FontFileAddScaledInstance (existing, &vals, NullFont,
                                               bitmap->name.name);
                    return TRUE;
                }
	    }
	}
	if (!(entry.u.scalable.fileName = FontFileSaveString (fileName)))
	    return FALSE;
	extra = malloc (sizeof (FontScalableExtraRec));
	if (!extra)
	{
	    free (entry.u.scalable.fileName);
	    return FALSE;
	}
	bzero((char *)&extra->defaults, sizeof(extra->defaults));
	if ((vals.values_supplied & POINTSIZE_MASK) == POINTSIZE_SCALAR &&
	    (int)(vals.point_matrix[3] * 10) == GetDefaultPointSize())
	    extra->defaults = vals;
	else
	{
	    FontResolutionPtr resolution;
	    int num;
	    int default_point_size = GetDefaultPointSize();

	    extra->defaults.point_matrix[0] =
		extra->defaults.point_matrix[3] =
	            (double)default_point_size / 10.0;
	    extra->defaults.point_matrix[1] =
		extra->defaults.point_matrix[2] = 0.0;
	    extra->defaults.values_supplied =
		POINTSIZE_SCALAR | PIXELSIZE_UNDEFINED;
	    extra->defaults.width = -1;
	    if (vals.x <= 0 || vals.y <= 0)
	    {
	        resolution = GetClientResolutions (&num);
	        if (resolution && num > 0)
	        {
	    	    extra->defaults.x = resolution->x_resolution;
	    	    extra->defaults.y = resolution->y_resolution;
	        }
	        else
	        {
		    extra->defaults.x = 75;
		    extra->defaults.y = 75;
	        }
	     }
	     else
	     {
		extra->defaults.x = vals.x;
		extra->defaults.y = vals.y;
	     }
	     FontFileCompleteXLFD (&extra->defaults, &extra->defaults);
	}
	extra->numScaled = 0;
	extra->sizeScaled = 0;
	extra->scaled = 0;
	extra->private = 0;
	entry.type = FONT_ENTRY_SCALABLE;
	entry.u.scalable.renderer = renderer;
	entry.u.scalable.extra = extra;
	if (!(scalable = FontFileAddEntry (&dir->scalable, &entry)))
	{
	    free (extra);
	    free (entry.u.scalable.fileName);
	    return FALSE;
	}
	if (vals.values_supplied & SIZE_SPECIFY_MASK)
	{
            if(bitmap)
            {
                FontFileCompleteXLFD(&vals, &vals);
                FontFileAddScaledInstance (scalable, &vals, NullFont,
                                           bitmap->name.name);
            }
	}
    }
    return TRUE;
}

Bool
FontFileAddFontAlias (FontDirectoryPtr dir, char *aliasName, char *fontName)
{
    FontEntryRec	entry;

    if (strcmp(aliasName,fontName) == 0) {
        /* Don't allow an alias to point to itself and create a loop */
        return FALSE;
    }
    entry.name.length = strlen (aliasName);
    CopyISOLatin1Lowered (aliasName, aliasName, entry.name.length);
    entry.name.name = aliasName;
    entry.name.ndashes = FontFileCountDashes (entry.name.name, entry.name.length);
    entry.type = FONT_ENTRY_ALIAS;
    if (!(entry.u.alias.resolved = FontFileSaveString (fontName)))
	return FALSE;
    if (!FontFileAddEntry (&dir->nonScalable, &entry))
    {
	free (entry.u.alias.resolved);
	return FALSE;
    }
    return TRUE;
}