1 /*
   2  * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #if defined(__linux__)
  27 #include <string.h>
  28 #endif /* __linux__ */
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <strings.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <sys/mman.h>
  35 #include <fcntl.h>
  36 #include <unistd.h>
  37 #ifdef __solaris__
  38 #include <sys/systeminfo.h>
  39 #endif
  40 
  41 #include <jni.h>
  42 #include <jni_util.h>
  43 #include <jvm_md.h>
  44 #include <sizecalc.h>
  45 #ifndef HEADLESS
  46 #include <X11/Xlib.h>
  47 #include <awt.h>
  48 #else
  49 /* locks ought to be included from awt.h */
  50 #define AWT_LOCK()
  51 #define AWT_UNLOCK()
  52 #endif /* !HEADLESS */
  53 
  54 #if defined(__linux__) && !defined(MAP_FAILED)
  55 #define MAP_FAILED ((caddr_t)-1)
  56 #endif
  57 
  58 #ifndef HEADLESS
  59 extern Display *awt_display;
  60 #endif /* !HEADLESS */
  61 
  62 #define FONTCONFIG_DLL_VERSIONED VERSIONED_JNI_LIB_NAME("fontconfig", "1")
  63 #define FONTCONFIG_DLL JNI_LIB_NAME("fontconfig")
  64 
  65 #define MAXFDIRS 512    /* Max number of directories that contain fonts */
  66 
  67 #if defined(__solaris__)
  68 /*
  69  * This can be set in the makefile to "/usr/X11" if so desired.
  70  */
  71 #ifndef OPENWINHOMELIB
  72 #define OPENWINHOMELIB "/usr/openwin/lib/"
  73 #endif
  74 
  75 /* This is all known Solaris X11 directories on Solaris 8, 9 and 10.
  76  * It is ordered to give precedence to TrueType directories.
  77  * It is needed if fontconfig is not installed or configured properly.
  78  */
  79 static char *fullSolarisFontPath[] = {
  80     OPENWINHOMELIB "X11/fonts/TrueType",
  81     OPENWINHOMELIB "locale/euro_fonts/X11/fonts/TrueType",
  82     OPENWINHOMELIB "locale/iso_8859_2/X11/fonts/TrueType",
  83     OPENWINHOMELIB "locale/iso_8859_5/X11/fonts/TrueType",
  84     OPENWINHOMELIB "locale/iso_8859_7/X11/fonts/TrueType",
  85     OPENWINHOMELIB "locale/iso_8859_8/X11/fonts/TrueType",
  86     OPENWINHOMELIB "locale/iso_8859_9/X11/fonts/TrueType",
  87     OPENWINHOMELIB "locale/iso_8859_13/X11/fonts/TrueType",
  88     OPENWINHOMELIB "locale/iso_8859_15/X11/fonts/TrueType",
  89     OPENWINHOMELIB "locale/ar/X11/fonts/TrueType",
  90     OPENWINHOMELIB "locale/hi_IN.UTF-8/X11/fonts/TrueType",
  91     OPENWINHOMELIB "locale/ja/X11/fonts/TT",
  92     OPENWINHOMELIB "locale/ko/X11/fonts/TrueType",
  93     OPENWINHOMELIB "locale/ko.UTF-8/X11/fonts/TrueType",
  94     OPENWINHOMELIB "locale/KOI8-R/X11/fonts/TrueType",
  95     OPENWINHOMELIB "locale/ru.ansi-1251/X11/fonts/TrueType",
  96     OPENWINHOMELIB "locale/th_TH/X11/fonts/TrueType",
  97     OPENWINHOMELIB "locale/zh_TW/X11/fonts/TrueType",
  98     OPENWINHOMELIB "locale/zh_TW.BIG5/X11/fonts/TT",
  99     OPENWINHOMELIB "locale/zh_HK.BIG5HK/X11/fonts/TT",
 100     OPENWINHOMELIB "locale/zh_CN.GB18030/X11/fonts/TrueType",
 101     OPENWINHOMELIB "locale/zh/X11/fonts/TrueType",
 102     OPENWINHOMELIB "locale/zh.GBK/X11/fonts/TrueType",
 103     OPENWINHOMELIB "X11/fonts/Type1",
 104     OPENWINHOMELIB "X11/fonts/Type1/sun",
 105     OPENWINHOMELIB "X11/fonts/Type1/sun/outline",
 106     OPENWINHOMELIB "locale/iso_8859_2/X11/fonts/Type1",
 107     OPENWINHOMELIB "locale/iso_8859_4/X11/fonts/Type1",
 108     OPENWINHOMELIB "locale/iso_8859_5/X11/fonts/Type1",
 109     OPENWINHOMELIB "locale/iso_8859_7/X11/fonts/Type1",
 110     OPENWINHOMELIB "locale/iso_8859_8/X11/fonts/Type1",
 111     OPENWINHOMELIB "locale/iso_8859_9/X11/fonts/Type1",
 112     OPENWINHOMELIB "locale/iso_8859_13/X11/fonts/Type1",
 113     OPENWINHOMELIB "locale/ar/X11/fonts/Type1",
 114     NULL, /* terminates the list */
 115 };
 116 
 117 #elif defined( __linux__)
 118 /* All the known interesting locations we have discovered on
 119  * various flavors of Linux
 120  */
 121 static char *fullLinuxFontPath[] = {
 122     "/usr/X11R6/lib/X11/fonts/TrueType",  /* RH 7.1+ */
 123     "/usr/X11R6/lib/X11/fonts/truetype",  /* SuSE */
 124     "/usr/X11R6/lib/X11/fonts/tt",
 125     "/usr/X11R6/lib/X11/fonts/TTF",
 126     "/usr/X11R6/lib/X11/fonts/OTF",       /* RH 9.0 (but empty!) */
 127     "/usr/share/fonts/ja/TrueType",       /* RH 7.2+ */
 128     "/usr/share/fonts/truetype",
 129     "/usr/share/fonts/ko/TrueType",       /* RH 9.0 */
 130     "/usr/share/fonts/zh_CN/TrueType",    /* RH 9.0 */
 131     "/usr/share/fonts/zh_TW/TrueType",    /* RH 9.0 */
 132     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType", /* Debian */
 133     "/usr/X11R6/lib/X11/fonts/Type1",
 134     "/usr/share/fonts/default/Type1",     /* RH 9.0 */
 135     NULL, /* terminates the list */
 136 };
 137 #elif defined(_AIX)
 138 static char *fullAixFontPath[] = {
 139     "/usr/lpp/X11/lib/X11/fonts/Type1",    /* from X11.fnt.iso_T1  */
 140     "/usr/lpp/X11/lib/X11/fonts/TrueType", /* from X11.fnt.ucs.ttf */
 141     NULL, /* terminates the list */
 142 };
 143 #endif
 144 
 145 static char **getFontConfigLocations();
 146 
 147 typedef struct {
 148     const char *name[MAXFDIRS];
 149     int  num;
 150 } fDirRecord, *fDirRecordPtr;
 151 
 152 #ifndef HEADLESS
 153 
 154 /*
 155  * Returns True if display is local, False of it's remote.
 156  */
 157 jboolean isDisplayLocal(JNIEnv *env) {
 158     static jboolean isLocal = False;
 159     static jboolean isLocalSet = False;
 160     jboolean ret;
 161 
 162     if (! isLocalSet) {
 163       jclass geCls = (*env)->FindClass(env, "java/awt/GraphicsEnvironment");
 164       CHECK_NULL_RETURN(geCls, JNI_FALSE);
 165       jmethodID getLocalGE = (*env)->GetStaticMethodID(env, geCls,
 166                                                  "getLocalGraphicsEnvironment",
 167                                            "()Ljava/awt/GraphicsEnvironment;");
 168       CHECK_NULL_RETURN(getLocalGE, JNI_FALSE);
 169       jobject ge = (*env)->CallStaticObjectMethod(env, geCls, getLocalGE);
 170       JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
 171 
 172       jclass sgeCls = (*env)->FindClass(env,
 173                                         "sun/java2d/SunGraphicsEnvironment");
 174       CHECK_NULL_RETURN(sgeCls, JNI_FALSE);
 175       if ((*env)->IsInstanceOf(env, ge, sgeCls)) {
 176         jmethodID isDisplayLocal = (*env)->GetMethodID(env, sgeCls,
 177                                                        "isDisplayLocal",
 178                                                        "()Z");
 179         JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
 180         isLocal = (*env)->CallBooleanMethod(env, ge, isDisplayLocal);
 181         JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
 182       } else {
 183         isLocal = True;
 184       }
 185       isLocalSet = True;
 186     }
 187 
 188     return isLocal;
 189 }
 190 
 191 static void AddFontsToX11FontPath ( fDirRecord *fDirP )
 192 {
 193     char *onePath;
 194     int index, nPaths;
 195     int origNumPaths, length;
 196     int origIndex;
 197     int totalDirCount;
 198     char  **origFontPath;
 199     char  **tempFontPath;
 200     int doNotAppend;
 201     int *appendDirList;
 202     char **newFontPath;
 203     int err, compareLength;
 204     char fontDirPath[512];
 205     int dirFile;
 206 
 207     doNotAppend = 0;
 208 
 209     if ( fDirP->num == 0 ) return;
 210 
 211     appendDirList = SAFE_SIZE_ARRAY_ALLOC(malloc, fDirP->num, sizeof ( int ));
 212     if ( appendDirList == NULL ) {
 213       return;  /* if it fails we cannot do much */
 214     }
 215 
 216     origFontPath = XGetFontPath ( awt_display, &nPaths );
 217 
 218     totalDirCount = nPaths;
 219     origNumPaths = nPaths;
 220     tempFontPath = origFontPath;
 221 
 222 
 223     for (index = 0; index < fDirP->num; index++ ) {
 224 
 225         doNotAppend = 0;
 226 
 227         tempFontPath = origFontPath;
 228         for ( origIndex = 0; origIndex < nPaths; origIndex++ ) {
 229 
 230             onePath = *tempFontPath;
 231 
 232             compareLength = strlen ( onePath );
 233             if ( onePath[compareLength -1] == '/' )
 234               compareLength--;
 235 
 236             /* there is a slash at the end of every solaris X11 font path name */
 237             if ( strncmp ( onePath, fDirP->name[index], compareLength ) == 0 ) {
 238               doNotAppend = 1;
 239               break;
 240             }
 241             tempFontPath++;
 242         }
 243 
 244         appendDirList[index] = 0;
 245         if ( doNotAppend == 0 ) {
 246             strcpy ( fontDirPath, fDirP->name[index] );
 247             strcat ( fontDirPath, "/fonts.dir" );
 248             dirFile = open ( fontDirPath, O_RDONLY, 0 );
 249             if ( dirFile == -1 ) {
 250                 doNotAppend = 1;
 251             } else {
 252                close ( dirFile );
 253                totalDirCount++;
 254                appendDirList[index] = 1;
 255             }
 256         }
 257 
 258     }
 259 
 260     /* if no changes are required do not bother to do a setfontpath */
 261     if ( totalDirCount == nPaths ) {
 262       free ( ( void *) appendDirList );
 263       XFreeFontPath ( origFontPath );
 264       return;
 265     }
 266 
 267 
 268     newFontPath = SAFE_SIZE_ARRAY_ALLOC(malloc, totalDirCount, sizeof ( char **) );
 269     /* if it fails free things and get out */
 270     if ( newFontPath == NULL ) {
 271       free ( ( void *) appendDirList );
 272       XFreeFontPath ( origFontPath );
 273       return;
 274     }
 275 
 276     for ( origIndex = 0; origIndex < nPaths; origIndex++ ) {
 277       onePath = origFontPath[origIndex];
 278       newFontPath[origIndex] = onePath;
 279     }
 280 
 281     /* now add the other font paths */
 282 
 283     for (index = 0; index < fDirP->num; index++ ) {
 284 
 285       if ( appendDirList[index] == 1 ) {
 286 
 287         /* printf ( "Appending %s\n", fDirP->name[index] ); */
 288 
 289         onePath = SAFE_SIZE_ARRAY_ALLOC(malloc, strlen (fDirP->name[index]) + 2, sizeof( char ) );
 290         if (onePath == NULL) {
 291             free ( ( void *) appendDirList );
 292             XFreeFontPath ( origFontPath );
 293             return;
 294         }
 295         strcpy ( onePath, fDirP->name[index] );
 296         strcat ( onePath, "/" );
 297         newFontPath[nPaths++] = onePath;
 298         /* printf ( "The path to be appended is %s\n", onePath ); */
 299       }
 300     }
 301 
 302     /*   printf ( "The dir count = %d\n", totalDirCount ); */
 303     free ( ( void *) appendDirList );
 304 
 305     XSetFontPath ( awt_display, newFontPath, totalDirCount );
 306 
 307         for ( index = origNumPaths; index < totalDirCount; index++ ) {
 308                 free( newFontPath[index] );
 309     }
 310 
 311         free ( (void *) newFontPath );
 312     XFreeFontPath ( origFontPath );
 313     return;
 314 }
 315 #endif /* !HEADLESS */
 316 
 317 
 318 #ifndef HEADLESS
 319 static char **getX11FontPath ()
 320 {
 321     char **x11Path, **fontdirs;
 322     int i, pos, slen, nPaths, numDirs;
 323 
 324     x11Path = XGetFontPath (awt_display, &nPaths);
 325 
 326     /* This isn't ever going to be perfect: the font path may contain
 327      * much we aren't interested in, but the cost should be moderate
 328      * Exclude all directories that contain the strings "Speedo","/F3/",
 329      * "75dpi", "100dpi", "misc" or "bitmap", or don't begin with a "/",
 330      * the last of which should exclude font servers.
 331      * Also exclude the user specific ".gnome*" directories which
 332      * aren't going to contain the system fonts we need.
 333      * Hopefully we are left only with Type1 and TrueType directories.
 334      * It doesn't matter much if there are extraneous directories, it'll just
 335      * cost us a little wasted effort upstream.
 336      */
 337     fontdirs = (char**)calloc(nPaths+1, sizeof(char*));
 338     pos = 0;
 339     for (i=0; i < nPaths; i++) {
 340         if (x11Path[i][0] != '/') {
 341             continue;
 342         }
 343         if (strstr(x11Path[i], "/75dpi") != NULL) {
 344             continue;
 345         }
 346         if (strstr(x11Path[i], "/100dpi") != NULL) {
 347             continue;
 348         }
 349         if (strstr(x11Path[i], "/misc") != NULL) {
 350             continue;
 351         }
 352         if (strstr(x11Path[i], "/Speedo") != NULL) {
 353             continue;
 354         }
 355         if (strstr(x11Path[i], ".gnome") != NULL) {
 356             continue;
 357         }
 358 #ifdef __solaris__
 359         if (strstr(x11Path[i], "/F3/") != NULL) {
 360             continue;
 361         }
 362         if (strstr(x11Path[i], "bitmap") != NULL) {
 363             continue;
 364         }
 365 #endif
 366         fontdirs[pos] = strdup(x11Path[i]);
 367         slen = strlen(fontdirs[pos]);
 368         if (slen > 0 && fontdirs[pos][slen-1] == '/') {
 369             fontdirs[pos][slen-1] = '\0'; /* null out trailing "/"  */
 370         }
 371         pos++;
 372     }
 373 
 374     XFreeFontPath(x11Path);
 375     if (pos == 0) {
 376         free(fontdirs);
 377         fontdirs = NULL;
 378     }
 379     return fontdirs;
 380 }
 381 
 382 
 383 #endif /* !HEADLESS */
 384 
 385 #if defined(__linux__)
 386 /* from awt_LoadLibrary.c */
 387 JNIEXPORT jboolean JNICALL AWTIsHeadless();
 388 #endif
 389 
 390 /* This eliminates duplicates, at a non-linear but acceptable cost
 391  * since the lists are expected to be reasonably short, and then
 392  * deletes references to non-existent directories, and returns
 393  * a single path consisting of unique font directories.
 394  */
 395 static char* mergePaths(char **p1, char **p2, char **p3, jboolean noType1) {
 396 
 397     int len1=0, len2=0, len3=0, totalLen=0, numDirs=0,
 398         currLen, i, j, found, pathLen=0;
 399     char **ptr, **fontdirs;
 400     char *fontPath = NULL;
 401 
 402     if (p1 != NULL) {
 403         ptr = p1;
 404         while (*ptr++ != NULL) len1++;
 405     }
 406     if (p2 != NULL) {
 407         ptr = p2;
 408 
 409         while (*ptr++ != NULL) len2++;
 410     }
 411     if (p3 != NULL) {
 412         ptr = p3;
 413         while (*ptr++ != NULL) len3++;
 414     }
 415     totalLen = len1+len2+len3;
 416     fontdirs = (char**)calloc(totalLen, sizeof(char*));
 417 
 418     for (i=0; i < len1; i++) {
 419         if (noType1 && strstr(p1[i], "Type1") != NULL) {
 420             continue;
 421         }
 422         fontdirs[numDirs++] = p1[i];
 423     }
 424 
 425     currLen = numDirs; /* only compare against previous path dirs */
 426     for (i=0; i < len2; i++) {
 427         if (noType1 && strstr(p2[i], "Type1") != NULL) {
 428             continue;
 429         }
 430         found = 0;
 431         for (j=0; j < currLen; j++) {
 432             if (strcmp(fontdirs[j], p2[i]) == 0) {
 433                 found = 1;
 434                 break;
 435             }
 436         }
 437         if (!found) {
 438            fontdirs[numDirs++] = p2[i];
 439         }
 440     }
 441 
 442     currLen = numDirs; /* only compare against previous path dirs */
 443     for (i=0; i < len3; i++) {
 444         if (noType1 && strstr(p3[i], "Type1") != NULL) {
 445             continue;
 446         }
 447         found = 0;
 448         for (j=0; j < currLen; j++) {
 449             if (strcmp(fontdirs[j], p3[i]) == 0) {
 450                 found = 1;
 451                 break;
 452             }
 453         }
 454         if (!found) {
 455            fontdirs[numDirs++] = p3[i];
 456         }
 457     }
 458 
 459     /* Now fontdirs contains unique dirs and numDirs records how many.
 460      * What we don't know is if they all exist. On reflection I think
 461      * this isn't an issue, so for now I will return all these locations,
 462      * converted to one string */
 463     for (i=0; i<numDirs; i++) {
 464         pathLen += (strlen(fontdirs[i]) + 1);
 465     }
 466     if (pathLen > 0 && (fontPath = malloc(pathLen))) {
 467         *fontPath = '\0';
 468         for (i = 0; i<numDirs; i++) {
 469             if (i != 0) {
 470                 strcat(fontPath, ":");
 471             }
 472             strcat(fontPath, fontdirs[i]);
 473         }
 474     }
 475     free (fontdirs);
 476 
 477     return fontPath;
 478 }
 479 
 480 /*
 481  * The goal of this function is to find all "system" fonts which
 482  * are needed by the JRE to display text in supported locales etc, and
 483  * to support APIs which allow users to enumerate all system fonts and use
 484  * them from their Java applications.
 485  * The preferred mechanism is now using the new "fontconfig" library
 486  * This exists on newer versions of Linux and Solaris (S10 and above)
 487  * The library is dynamically located. The results are merged with
 488  * a set of "known" locations and with the X11 font path, if running in
 489  * a local X11 environment.
 490  * The hardwired paths are built into the JDK binary so as new font locations
 491  * are created on a host plaform for them to be located by the JRE they will
 492  * need to be added ito the host's font configuration database, typically
 493  * /etc/fonts/local.conf, and to ensure that directory contains a fonts.dir
 494  * NB: Fontconfig also depends heavily for performance on the host O/S
 495  * maintaining up to date caches.
 496  * This is consistent with the requirements of the desktop environments
 497  * on these OSes.
 498  * This also frees us from X11 APIs as JRE is required to function in
 499  * a "headless" mode where there is no Xserver.
 500  */
 501 static char *getPlatformFontPathChars(JNIEnv *env, jboolean noType1, jboolean isX11) {
 502 
 503     char **fcdirs = NULL, **x11dirs = NULL, **knowndirs = NULL, *path = NULL;
 504 
 505     /* As of 1.5 we try to use fontconfig on both Solaris and Linux.
 506      * If its not available NULL is returned.
 507      */
 508     fcdirs = getFontConfigLocations();
 509 
 510 #if defined(__linux__)
 511     knowndirs = fullLinuxFontPath;
 512 #elif defined(__solaris__)
 513     knowndirs = fullSolarisFontPath;
 514 #elif defined(_AIX)
 515     knowndirs = fullAixFontPath;
 516 #endif
 517     /* REMIND: this code requires to be executed when the GraphicsEnvironment
 518      * is already initialised. That is always true, but if it were not so,
 519      * this code could throw an exception and the fontpath would fail to
 520      * be initialised.
 521      */
 522 #ifndef HEADLESS
 523     if (isX11) { // The following only works in an x11 environment.
 524 #if defined(__linux__)
 525     /* There's no headless build on linux ... */
 526     if (!AWTIsHeadless()) { /* .. so need to call a function to check */
 527 #endif
 528       /* Using the X11 font path to locate font files is now a fallback
 529        * useful only if fontconfig failed, or is incomplete. So we could
 530        * remove this code completely and the consequences should be rare
 531        * and non-fatal. If this happens, then the calling Java code can
 532        * be modified to no longer require that the AWT lock (the X11GE)
 533        * be initialised prior to calling this code.
 534        */
 535     AWT_LOCK();
 536     if (isDisplayLocal(env)) {
 537         x11dirs = getX11FontPath();
 538     }
 539     AWT_UNLOCK();
 540 #if defined(__linux__)
 541     }
 542 #endif
 543     }
 544 #endif /* !HEADLESS */
 545     path = mergePaths(fcdirs, x11dirs, knowndirs, noType1);
 546     if (fcdirs != NULL) {
 547         char **p = fcdirs;
 548         while (*p != NULL)  free(*p++);
 549         free(fcdirs);
 550     }
 551 
 552     if (x11dirs != NULL) {
 553         char **p = x11dirs;
 554         while (*p != NULL) free(*p++);
 555         free(x11dirs);
 556     }
 557 
 558     return path;
 559 }
 560 
 561 JNIEXPORT jstring JNICALL Java_sun_awt_FcFontManager_getFontPathNative
 562 (JNIEnv *env, jobject thiz, jboolean noType1, jboolean isX11) {
 563     jstring ret;
 564     static char *ptr = NULL; /* retain result across calls */
 565 
 566     if (ptr == NULL) {
 567         ptr = getPlatformFontPathChars(env, noType1, isX11);
 568     }
 569     ret = (*env)->NewStringUTF(env, ptr);
 570     return ret;
 571 }
 572 
 573 #include <dlfcn.h>
 574 
 575 #include "fontconfig.h"
 576 
 577 
 578 static void* openFontConfig() {
 579 
 580     char *homeEnv;
 581     static char *homeEnvStr = "HOME="; /* must be static */
 582     void* libfontconfig = NULL;
 583 #ifdef __solaris__
 584 #define SYSINFOBUFSZ 8
 585     char sysinfobuf[SYSINFOBUFSZ];
 586 #endif
 587 
 588     /* Private workaround to not use fontconfig library.
 589      * May be useful during testing/debugging
 590      */
 591     char *useFC = getenv("USE_J2D_FONTCONFIG");
 592     if (useFC != NULL && !strcmp(useFC, "no")) {
 593         return NULL;
 594     }
 595 
 596 #ifdef __solaris__
 597     /* fontconfig is likely not properly configured on S8/S9 - skip it,
 598      * although allow user to override this behaviour with an env. variable
 599      * ie if USE_J2D_FONTCONFIG=yes then we skip this test.
 600      * NB "4" is the length of a string which matches our patterns.
 601      */
 602     if (useFC == NULL || strcmp(useFC, "yes")) {
 603         if (sysinfo(SI_RELEASE, sysinfobuf, SYSINFOBUFSZ) == 4) {
 604             if ((!strcmp(sysinfobuf, "5.8") || !strcmp(sysinfobuf, "5.9"))) {
 605                 return NULL;
 606             }
 607         }
 608     }
 609 #endif
 610 
 611 #if defined(_AIX)
 612     /* On AIX, fontconfig is not a standard package supported by IBM.
 613      * instead it has to be installed from the "AIX Toolbox for Linux Applications"
 614      * site http://www-03.ibm.com/systems/power/software/aix/linux/toolbox/alpha.html
 615      * and will be installed under /opt/freeware/lib/libfontconfig.a.
 616      * Notice that the archive contains the real 32- and 64-bit shared libraries.
 617      * We first try to load 'libfontconfig.so' from the default library path in the
 618      * case the user has installed a private version of the library and if that
 619      * doesn't succeed, we try the version from /opt/freeware/lib/libfontconfig.a
 620      */
 621     libfontconfig = dlopen("libfontconfig.so", RTLD_LOCAL|RTLD_LAZY);
 622     if (libfontconfig == NULL) {
 623         libfontconfig = dlopen("/opt/freeware/lib/libfontconfig.a(libfontconfig.so.1)", RTLD_MEMBER|RTLD_LOCAL|RTLD_LAZY);
 624         if (libfontconfig == NULL) {
 625             return NULL;
 626         }
 627     }
 628 #else
 629     /* 64 bit sparc should pick up the right version from the lib path.
 630      * New features may be added to libfontconfig, this is expected to
 631      * be compatible with old features, but we may need to start
 632      * distinguishing the library version, to know whether to expect
 633      * certain symbols - and functionality - to be available.
 634      * Also add explicit search for .so.1 in case .so symlink doesn't exist.
 635      */
 636     libfontconfig = dlopen(FONTCONFIG_DLL_VERSIONED, RTLD_LOCAL|RTLD_LAZY);
 637     if (libfontconfig == NULL) {
 638         libfontconfig = dlopen(FONTCONFIG_DLL, RTLD_LOCAL|RTLD_LAZY);
 639         if (libfontconfig == NULL) {
 640             return NULL;
 641         }
 642     }
 643 #endif
 644 
 645     /* Version 1.0 of libfontconfig crashes if HOME isn't defined in
 646      * the environment. This should generally never happen, but we can't
 647      * control it, and can't control the version of fontconfig, so iff
 648      * its not defined we set it to an empty value which is sufficient
 649      * to prevent a crash. I considered unsetting it before exit, but
 650      * it doesn't appear to work on Solaris, so I will leave it set.
 651      */
 652     homeEnv = getenv("HOME");
 653     if (homeEnv == NULL) {
 654         putenv(homeEnvStr);
 655     }
 656 
 657     return libfontconfig;
 658 }
 659 
 660 typedef void* (FcFiniFuncType)();
 661 
 662 static void closeFontConfig(void* libfontconfig, jboolean fcFini) {
 663 
 664   /* NB FcFini is not in (eg) the Solaris 10 version of fontconfig. Its not
 665    * clear if this means we are really leaking resources in those cases
 666    * but it seems we should call this function when its available.
 667    * But since the Swing GTK code may be still accessing the lib, its probably
 668    * safest for now to just let this "leak" rather than potentially
 669    * concurrently free global data still in use by other code.
 670    */
 671 #if 0
 672     if (fcFini) { /* release resources */
 673         FcFiniFuncType FcFini = (FcFiniFuncType)dlsym(libfontconfig, "FcFini");
 674 
 675         if (FcFini != NULL) {
 676             (*FcFini)();
 677         }
 678     }
 679 #endif
 680     dlclose(libfontconfig);
 681 }
 682 
 683 typedef FcConfig* (*FcInitLoadConfigFuncType)();
 684 typedef FcPattern* (*FcPatternBuildFuncType)(FcPattern *orig, ...);
 685 typedef FcObjectSet* (*FcObjectSetFuncType)(const char *first, ...);
 686 typedef FcFontSet* (*FcFontListFuncType)(FcConfig *config,
 687                                          FcPattern *p,
 688                                          FcObjectSet *os);
 689 typedef FcResult (*FcPatternGetBoolFuncType)(const FcPattern *p,
 690                                                const char *object,
 691                                                int n,
 692                                                FcBool *b);
 693 typedef FcResult (*FcPatternGetIntegerFuncType)(const FcPattern *p,
 694                                                 const char *object,
 695                                                 int n,
 696                                                 int *i);
 697 typedef FcResult (*FcPatternGetStringFuncType)(const FcPattern *p,
 698                                                const char *object,
 699                                                int n,
 700                                                FcChar8 ** s);
 701 typedef FcChar8* (*FcStrDirnameFuncType)(const FcChar8 *file);
 702 typedef void (*FcPatternDestroyFuncType)(FcPattern *p);
 703 typedef void (*FcFontSetDestroyFuncType)(FcFontSet *s);
 704 typedef FcPattern* (*FcNameParseFuncType)(const FcChar8 *name);
 705 typedef FcBool (*FcPatternAddStringFuncType)(FcPattern *p,
 706                                              const char *object,
 707                                              const FcChar8 *s);
 708 typedef void (*FcDefaultSubstituteFuncType)(FcPattern *p);
 709 typedef FcBool (*FcConfigSubstituteFuncType)(FcConfig *config,
 710                                              FcPattern *p,
 711                                              FcMatchKind kind);
 712 typedef FcPattern* (*FcFontMatchFuncType)(FcConfig *config,
 713                                           FcPattern *p,
 714                                           FcResult *result);
 715 typedef FcFontSet* (*FcFontSetCreateFuncType)();
 716 typedef FcBool (*FcFontSetAddFuncType)(FcFontSet *s, FcPattern *font);
 717 
 718 typedef FcResult (*FcPatternGetCharSetFuncType)(FcPattern *p,
 719                                                 const char *object,
 720                                                 int n,
 721                                                 FcCharSet **c);
 722 typedef FcFontSet* (*FcFontSortFuncType)(FcConfig *config,
 723                                          FcPattern *p,
 724                                          FcBool trim,
 725                                          FcCharSet **csp,
 726                                          FcResult *result);
 727 typedef FcCharSet* (*FcCharSetUnionFuncType)(const FcCharSet *a,
 728                                              const FcCharSet *b);
 729 typedef FcChar32 (*FcCharSetSubtractCountFuncType)(const FcCharSet *a,
 730                                                    const FcCharSet *b);
 731 
 732 typedef int (*FcGetVersionFuncType)();
 733 
 734 typedef FcStrList* (*FcConfigGetCacheDirsFuncType)(FcConfig *config);
 735 typedef FcChar8* (*FcStrListNextFuncType)(FcStrList *list);
 736 typedef FcChar8* (*FcStrListDoneFuncType)(FcStrList *list);
 737 
 738 static char **getFontConfigLocations() {
 739 
 740     char **fontdirs;
 741     int numdirs = 0;
 742     FcInitLoadConfigFuncType FcInitLoadConfig;
 743     FcPatternBuildFuncType FcPatternBuild;
 744     FcObjectSetFuncType FcObjectSetBuild;
 745     FcFontListFuncType FcFontList;
 746     FcPatternGetStringFuncType FcPatternGetString;
 747     FcStrDirnameFuncType FcStrDirname;
 748     FcPatternDestroyFuncType FcPatternDestroy;
 749     FcFontSetDestroyFuncType FcFontSetDestroy;
 750 
 751     FcConfig *fontconfig;
 752     FcPattern *pattern;
 753     FcObjectSet *objset;
 754     FcFontSet *fontSet;
 755     FcStrList *strList;
 756     FcChar8 *str;
 757     int i, f, found, len=0;
 758     char **fontPath;
 759 
 760     void* libfontconfig = openFontConfig();
 761 
 762     if (libfontconfig == NULL) {
 763         return NULL;
 764     }
 765 
 766     FcPatternBuild     =
 767         (FcPatternBuildFuncType)dlsym(libfontconfig, "FcPatternBuild");
 768     FcObjectSetBuild   =
 769         (FcObjectSetFuncType)dlsym(libfontconfig, "FcObjectSetBuild");
 770     FcFontList         =
 771         (FcFontListFuncType)dlsym(libfontconfig, "FcFontList");
 772     FcPatternGetString =
 773         (FcPatternGetStringFuncType)dlsym(libfontconfig, "FcPatternGetString");
 774     FcStrDirname       =
 775         (FcStrDirnameFuncType)dlsym(libfontconfig, "FcStrDirname");
 776     FcPatternDestroy   =
 777         (FcPatternDestroyFuncType)dlsym(libfontconfig, "FcPatternDestroy");
 778     FcFontSetDestroy   =
 779         (FcFontSetDestroyFuncType)dlsym(libfontconfig, "FcFontSetDestroy");
 780 
 781     if (FcPatternBuild     == NULL ||
 782         FcObjectSetBuild   == NULL ||
 783         FcPatternGetString == NULL ||
 784         FcFontList         == NULL ||
 785         FcStrDirname       == NULL ||
 786         FcPatternDestroy   == NULL ||
 787         FcFontSetDestroy   == NULL) { /* problem with the library: return. */
 788         closeFontConfig(libfontconfig, JNI_FALSE);
 789         return NULL;
 790     }
 791 
 792     /* Make calls into the fontconfig library to build a search for
 793      * outline fonts, and to get the set of full file paths from the matches.
 794      * This set is returned from the call to FcFontList(..)
 795      * We allocate an array of char* pointers sufficient to hold all
 796      * the matches + 1 extra which ensures there will be a NULL after all
 797      * valid entries.
 798      * We call FcStrDirname strip the file name from the path, and
 799      * check if we have yet seen this directory. If not we add a pointer to
 800      * it into our array of char*. Note that FcStrDirname returns newly
 801      * allocated storage so we can use this in the return char** value.
 802      * Finally we clean up, freeing allocated resources, and return the
 803      * array of unique directories.
 804      */
 805     pattern = (*FcPatternBuild)(NULL, FC_OUTLINE, FcTypeBool, FcTrue, NULL);
 806     objset = (*FcObjectSetBuild)(FC_FILE, NULL);
 807     fontSet = (*FcFontList)(NULL, pattern, objset);
 808     fontdirs = (char**)calloc(fontSet->nfont+1, sizeof(char*));
 809     for (f=0; f < fontSet->nfont; f++) {
 810         FcChar8 *file;
 811         FcChar8 *dir;
 812         if ((*FcPatternGetString)(fontSet->fonts[f], FC_FILE, 0, &file) ==
 813                                   FcResultMatch) {
 814             dir = (*FcStrDirname)(file);
 815             found = 0;
 816             for (i=0;i<numdirs; i++) {
 817                 if (strcmp(fontdirs[i], (char*)dir) == 0) {
 818                     found = 1;
 819                     break;
 820                 }
 821             }
 822             if (!found) {
 823                 fontdirs[numdirs++] = (char*)dir;
 824             } else {
 825                 free((char*)dir);
 826             }
 827         }
 828     }
 829 
 830     /* Free memory and close the ".so" */
 831     (*FcFontSetDestroy)(fontSet);
 832     (*FcPatternDestroy)(pattern);
 833     closeFontConfig(libfontconfig, JNI_TRUE);
 834     return fontdirs;
 835 }
 836 
 837 /* These are copied from sun.awt.SunHints.
 838  * Consider initialising them as ints using JNI for more robustness.
 839  */
 840 #define TEXT_AA_OFF 1
 841 #define TEXT_AA_ON  2
 842 #define TEXT_AA_LCD_HRGB 4
 843 #define TEXT_AA_LCD_HBGR 5
 844 #define TEXT_AA_LCD_VRGB 6
 845 #define TEXT_AA_LCD_VBGR 7
 846 
 847 JNIEXPORT jint JNICALL
 848 Java_sun_font_FontConfigManager_getFontConfigAASettings
 849 (JNIEnv *env, jclass obj, jstring localeStr, jstring fcNameStr) {
 850 
 851     FcNameParseFuncType FcNameParse;
 852     FcPatternAddStringFuncType FcPatternAddString;
 853     FcConfigSubstituteFuncType FcConfigSubstitute;
 854     FcDefaultSubstituteFuncType  FcDefaultSubstitute;
 855     FcFontMatchFuncType FcFontMatch;
 856     FcPatternGetBoolFuncType FcPatternGetBool;
 857     FcPatternGetIntegerFuncType FcPatternGetInteger;
 858     FcPatternDestroyFuncType FcPatternDestroy;
 859 
 860     FcPattern *pattern, *matchPattern;
 861     FcResult result;
 862     FcBool antialias = FcFalse;
 863     int rgba = 0;
 864     const char *locale=NULL, *fcName=NULL;
 865     void* libfontconfig;
 866 
 867     if (fcNameStr == NULL || localeStr == NULL) {
 868         return -1;
 869     }
 870 
 871     fcName = (*env)->GetStringUTFChars(env, fcNameStr, 0);
 872     if (fcName == NULL) {
 873         return -1;
 874     }
 875     locale = (*env)->GetStringUTFChars(env, localeStr, 0);
 876 
 877     if ((libfontconfig = openFontConfig()) == NULL) {
 878         (*env)->ReleaseStringUTFChars (env, fcNameStr, (const char*)fcName);
 879         if (locale) {
 880             (*env)->ReleaseStringUTFChars (env, localeStr,(const char*)locale);
 881         }
 882         return -1;
 883     }
 884 
 885     FcNameParse = (FcNameParseFuncType)dlsym(libfontconfig, "FcNameParse");
 886     FcPatternAddString =
 887         (FcPatternAddStringFuncType)dlsym(libfontconfig, "FcPatternAddString");
 888     FcConfigSubstitute =
 889         (FcConfigSubstituteFuncType)dlsym(libfontconfig, "FcConfigSubstitute");
 890     FcDefaultSubstitute = (FcDefaultSubstituteFuncType)
 891         dlsym(libfontconfig, "FcDefaultSubstitute");
 892     FcFontMatch = (FcFontMatchFuncType)dlsym(libfontconfig, "FcFontMatch");
 893     FcPatternGetBool = (FcPatternGetBoolFuncType)
 894         dlsym(libfontconfig, "FcPatternGetBool");
 895     FcPatternGetInteger = (FcPatternGetIntegerFuncType)
 896         dlsym(libfontconfig, "FcPatternGetInteger");
 897     FcPatternDestroy =
 898         (FcPatternDestroyFuncType)dlsym(libfontconfig, "FcPatternDestroy");
 899 
 900     if (FcNameParse          == NULL ||
 901         FcPatternAddString   == NULL ||
 902         FcConfigSubstitute   == NULL ||
 903         FcDefaultSubstitute  == NULL ||
 904         FcFontMatch          == NULL ||
 905         FcPatternGetBool     == NULL ||
 906         FcPatternGetInteger  == NULL ||
 907         FcPatternDestroy     == NULL) { /* problem with the library: return. */
 908 
 909         (*env)->ReleaseStringUTFChars (env, fcNameStr, (const char*)fcName);
 910         if (locale) {
 911             (*env)->ReleaseStringUTFChars (env, localeStr,(const char*)locale);
 912         }
 913         closeFontConfig(libfontconfig, JNI_FALSE);
 914         return -1;
 915     }
 916 
 917 
 918     pattern = (*FcNameParse)((FcChar8 *)fcName);
 919     if (locale != NULL) {
 920         (*FcPatternAddString)(pattern, FC_LANG, (unsigned char*)locale);
 921     }
 922     (*FcConfigSubstitute)(NULL, pattern, FcMatchPattern);
 923     (*FcDefaultSubstitute)(pattern);
 924     matchPattern = (*FcFontMatch)(NULL, pattern, &result);
 925     /* Perhaps should call FcFontRenderPrepare() here as some pattern
 926      * elements might change as a result of that call, but I'm not seeing
 927      * any difference in testing.
 928      */
 929     if (matchPattern) {
 930         (*FcPatternGetBool)(matchPattern, FC_ANTIALIAS, 0, &antialias);
 931         (*FcPatternGetInteger)(matchPattern, FC_RGBA, 0, &rgba);
 932         (*FcPatternDestroy)(matchPattern);
 933     }
 934     (*FcPatternDestroy)(pattern);
 935 
 936     (*env)->ReleaseStringUTFChars (env, fcNameStr, (const char*)fcName);
 937     if (locale) {
 938         (*env)->ReleaseStringUTFChars (env, localeStr, (const char*)locale);
 939     }
 940     closeFontConfig(libfontconfig, JNI_TRUE);
 941 
 942     if (antialias == FcFalse) {
 943         return TEXT_AA_OFF;
 944     } else if (rgba <= FC_RGBA_UNKNOWN || rgba >= FC_RGBA_NONE) {
 945         return TEXT_AA_ON;
 946     } else {
 947         switch (rgba) {
 948         case FC_RGBA_RGB : return TEXT_AA_LCD_HRGB;
 949         case FC_RGBA_BGR : return TEXT_AA_LCD_HBGR;
 950         case FC_RGBA_VRGB : return TEXT_AA_LCD_VRGB;
 951         case FC_RGBA_VBGR : return TEXT_AA_LCD_VBGR;
 952         default : return TEXT_AA_LCD_HRGB; // should not get here.
 953         }
 954     }
 955 }
 956 
 957 JNIEXPORT jint JNICALL
 958 Java_sun_font_FontConfigManager_getFontConfigVersion
 959     (JNIEnv *env, jclass obj) {
 960 
 961     void* libfontconfig;
 962     FcGetVersionFuncType FcGetVersion;
 963     int version = 0;
 964 
 965     if ((libfontconfig = openFontConfig()) == NULL) {
 966         return 0;
 967     }
 968 
 969     FcGetVersion = (FcGetVersionFuncType)dlsym(libfontconfig, "FcGetVersion");
 970 
 971     if (FcGetVersion == NULL) {
 972         closeFontConfig(libfontconfig, JNI_FALSE);
 973         return 0;
 974     }
 975     version = (*FcGetVersion)();
 976     closeFontConfig(libfontconfig, JNI_FALSE);
 977 
 978     return version;
 979 }
 980 
 981 
 982 JNIEXPORT void JNICALL
 983 Java_sun_font_FontConfigManager_getFontConfig
 984 (JNIEnv *env, jclass obj, jstring localeStr, jobject fcInfoObj,
 985  jobjectArray fcCompFontArray,  jboolean includeFallbacks) {
 986 
 987     FcNameParseFuncType FcNameParse;
 988     FcPatternAddStringFuncType FcPatternAddString;
 989     FcConfigSubstituteFuncType FcConfigSubstitute;
 990     FcDefaultSubstituteFuncType  FcDefaultSubstitute;
 991     FcFontMatchFuncType FcFontMatch;
 992     FcPatternGetStringFuncType FcPatternGetString;
 993     FcPatternDestroyFuncType FcPatternDestroy;
 994     FcPatternGetCharSetFuncType FcPatternGetCharSet;
 995     FcFontSortFuncType FcFontSort;
 996     FcFontSetDestroyFuncType FcFontSetDestroy;
 997     FcCharSetUnionFuncType FcCharSetUnion;
 998     FcCharSetSubtractCountFuncType FcCharSetSubtractCount;
 999     FcGetVersionFuncType FcGetVersion;
1000     FcConfigGetCacheDirsFuncType FcConfigGetCacheDirs;
1001     FcStrListNextFuncType FcStrListNext;
1002     FcStrListDoneFuncType FcStrListDone;
1003 
1004     int i, arrlen;
1005     jobject fcCompFontObj;
1006     jstring fcNameStr, jstr;
1007     const char *locale, *fcName;
1008     FcPattern *pattern;
1009     FcResult result;
1010     void* libfontconfig;
1011     jfieldID fcNameID, fcFirstFontID, fcAllFontsID, fcVersionID, fcCacheDirsID;
1012     jfieldID familyNameID, styleNameID, fullNameID, fontFileID;
1013     jmethodID fcFontCons;
1014     char* debugMinGlyphsStr = getenv("J2D_DEBUG_MIN_GLYPHS");
1015     jclass fcInfoClass;
1016     jclass fcCompFontClass;
1017     jclass fcFontClass;
1018 
1019     CHECK_NULL(fcInfoObj);
1020     CHECK_NULL(fcCompFontArray);
1021 
1022     fcInfoClass =
1023         (*env)->FindClass(env, "sun/font/FontConfigManager$FontConfigInfo");
1024     CHECK_NULL(fcInfoClass);
1025     fcCompFontClass =
1026         (*env)->FindClass(env, "sun/font/FontConfigManager$FcCompFont");
1027     CHECK_NULL(fcCompFontClass);
1028     fcFontClass =
1029          (*env)->FindClass(env, "sun/font/FontConfigManager$FontConfigFont");
1030     CHECK_NULL(fcFontClass);
1031 
1032 
1033     CHECK_NULL(fcVersionID = (*env)->GetFieldID(env, fcInfoClass, "fcVersion", "I"));
1034     CHECK_NULL(fcCacheDirsID = (*env)->GetFieldID(env, fcInfoClass, "cacheDirs",
1035                                                   "[Ljava/lang/String;"));
1036     CHECK_NULL(fcNameID = (*env)->GetFieldID(env, fcCompFontClass,
1037                                              "fcName", "Ljava/lang/String;"));
1038     CHECK_NULL(fcFirstFontID = (*env)->GetFieldID(env, fcCompFontClass, "firstFont",
1039                                         "Lsun/font/FontConfigManager$FontConfigFont;"));
1040     CHECK_NULL(fcAllFontsID = (*env)->GetFieldID(env, fcCompFontClass, "allFonts",
1041                                         "[Lsun/font/FontConfigManager$FontConfigFont;"));
1042     CHECK_NULL(fcFontCons = (*env)->GetMethodID(env, fcFontClass, "<init>", "()V"));
1043     CHECK_NULL(familyNameID = (*env)->GetFieldID(env, fcFontClass,
1044                                       "familyName", "Ljava/lang/String;"));
1045     CHECK_NULL(styleNameID = (*env)->GetFieldID(env, fcFontClass,
1046                                     "styleStr", "Ljava/lang/String;"));
1047     CHECK_NULL(fullNameID = (*env)->GetFieldID(env, fcFontClass,
1048                                     "fullName", "Ljava/lang/String;"));
1049     CHECK_NULL(fontFileID = (*env)->GetFieldID(env, fcFontClass,
1050                                     "fontFile", "Ljava/lang/String;"));
1051 
1052     if ((libfontconfig = openFontConfig()) == NULL) {
1053         return;
1054     }
1055 
1056     FcNameParse = (FcNameParseFuncType)dlsym(libfontconfig, "FcNameParse");
1057     FcPatternAddString =
1058         (FcPatternAddStringFuncType)dlsym(libfontconfig, "FcPatternAddString");
1059     FcConfigSubstitute =
1060         (FcConfigSubstituteFuncType)dlsym(libfontconfig, "FcConfigSubstitute");
1061     FcDefaultSubstitute = (FcDefaultSubstituteFuncType)
1062         dlsym(libfontconfig, "FcDefaultSubstitute");
1063     FcFontMatch = (FcFontMatchFuncType)dlsym(libfontconfig, "FcFontMatch");
1064     FcPatternGetString =
1065         (FcPatternGetStringFuncType)dlsym(libfontconfig, "FcPatternGetString");
1066     FcPatternDestroy =
1067         (FcPatternDestroyFuncType)dlsym(libfontconfig, "FcPatternDestroy");
1068     FcPatternGetCharSet =
1069         (FcPatternGetCharSetFuncType)dlsym(libfontconfig,
1070                                            "FcPatternGetCharSet");
1071     FcFontSort =
1072         (FcFontSortFuncType)dlsym(libfontconfig, "FcFontSort");
1073     FcFontSetDestroy =
1074         (FcFontSetDestroyFuncType)dlsym(libfontconfig, "FcFontSetDestroy");
1075     FcCharSetUnion =
1076         (FcCharSetUnionFuncType)dlsym(libfontconfig, "FcCharSetUnion");
1077     FcCharSetSubtractCount =
1078         (FcCharSetSubtractCountFuncType)dlsym(libfontconfig,
1079                                               "FcCharSetSubtractCount");
1080     FcGetVersion = (FcGetVersionFuncType)dlsym(libfontconfig, "FcGetVersion");
1081 
1082     if (FcNameParse          == NULL ||
1083         FcPatternAddString   == NULL ||
1084         FcConfigSubstitute   == NULL ||
1085         FcDefaultSubstitute  == NULL ||
1086         FcFontMatch          == NULL ||
1087         FcPatternGetString   == NULL ||
1088         FcPatternDestroy     == NULL ||
1089         FcPatternGetCharSet  == NULL ||
1090         FcFontSetDestroy     == NULL ||
1091         FcCharSetUnion       == NULL ||
1092         FcGetVersion         == NULL ||
1093         FcCharSetSubtractCount == NULL) {/* problem with the library: return.*/
1094         closeFontConfig(libfontconfig, JNI_FALSE);
1095         return;
1096     }
1097 
1098     (*env)->SetIntField(env, fcInfoObj, fcVersionID, (*FcGetVersion)());
1099 
1100     /* Optionally get the cache dir locations. This isn't
1101      * available until v 2.4.x, but this is OK since on those later versions
1102      * we can check the time stamps on the cache dirs to see if we
1103      * are out of date. There are a couple of assumptions here. First
1104      * that the time stamp on the directory changes when the contents are
1105      * updated. Secondly that the locations don't change. The latter is
1106      * most likely if a new version of fontconfig is installed, but we also
1107      * invalidate the cache if we detect that. Arguably even that is "rare",
1108      * and most likely is tied to an OS upgrade which gets a new file anyway.
1109      */
1110     FcConfigGetCacheDirs =
1111         (FcConfigGetCacheDirsFuncType)dlsym(libfontconfig,
1112                                             "FcConfigGetCacheDirs");
1113     FcStrListNext =
1114         (FcStrListNextFuncType)dlsym(libfontconfig, "FcStrListNext");
1115     FcStrListDone =
1116         (FcStrListDoneFuncType)dlsym(libfontconfig, "FcStrListDone");
1117     if (FcStrListNext != NULL && FcStrListDone != NULL &&
1118         FcConfigGetCacheDirs != NULL) {
1119 
1120         FcStrList* cacheDirs;
1121         FcChar8* cacheDir;
1122         int cnt = 0;
1123         jobject cacheDirArray =
1124             (*env)->GetObjectField(env, fcInfoObj, fcCacheDirsID);
1125         int max = (*env)->GetArrayLength(env, cacheDirArray);
1126 
1127         cacheDirs = (*FcConfigGetCacheDirs)(NULL);
1128         if (cacheDirs != NULL) {
1129             while ((cnt < max) && (cacheDir = (*FcStrListNext)(cacheDirs))) {
1130                 jstr = (*env)->NewStringUTF(env, (const char*)cacheDir);
1131                 JNU_CHECK_EXCEPTION(env);
1132 
1133                 (*env)->SetObjectArrayElement(env, cacheDirArray, cnt++, jstr);
1134             }
1135             (*FcStrListDone)(cacheDirs);
1136         }
1137     }
1138 
1139     locale = (*env)->GetStringUTFChars(env, localeStr, 0);
1140     if (locale == NULL) {
1141         (*env)->ExceptionClear(env);
1142         JNU_ThrowOutOfMemoryError(env, "Could not create locale");
1143         return;
1144     }
1145 
1146     arrlen = (*env)->GetArrayLength(env, fcCompFontArray);
1147     for (i=0; i<arrlen; i++) {
1148         FcFontSet* fontset;
1149         int fn, j, fontCount, nfonts;
1150         unsigned int minGlyphs;
1151         FcChar8 **family, **styleStr, **fullname, **file;
1152         jarray fcFontArr = NULL;
1153         FcCharSet *unionCharset = NULL;
1154 
1155         fcCompFontObj = (*env)->GetObjectArrayElement(env, fcCompFontArray, i);
1156         fcNameStr =
1157             (jstring)((*env)->GetObjectField(env, fcCompFontObj, fcNameID));
1158         fcName = (*env)->GetStringUTFChars(env, fcNameStr, 0);
1159         if (fcName == NULL) {
1160             continue;
1161         }
1162         pattern = (*FcNameParse)((FcChar8 *)fcName);
1163         (*env)->ReleaseStringUTFChars(env, fcNameStr, (const char*)fcName);
1164         if (pattern == NULL) {
1165             closeFontConfig(libfontconfig, JNI_FALSE);
1166             return;
1167         }
1168 
1169         /* locale may not usually be necessary as fontconfig appears to apply
1170          * this anyway based on the user's environment. However we want
1171          * to use the value of the JDK startup locale so this should take
1172          * care of it.
1173          */
1174         if (locale != NULL) {
1175             (*FcPatternAddString)(pattern, FC_LANG, (unsigned char*)locale);
1176         }
1177         (*FcConfigSubstitute)(NULL, pattern, FcMatchPattern);
1178         (*FcDefaultSubstitute)(pattern);
1179         fontset = (*FcFontSort)(NULL, pattern, FcTrue, NULL, &result);
1180         if (fontset == NULL) {
1181             (*FcPatternDestroy)(pattern);
1182             closeFontConfig(libfontconfig, JNI_FALSE);
1183             return;
1184         }
1185 
1186         /* fontconfig returned us "nfonts". If we are just getting the
1187          * first font, we set nfont to zero. Otherwise we use "nfonts".
1188          * Next create separate C arrrays of length nfonts for family file etc.
1189          * Inspect the returned fonts and the ones we like (adds enough glyphs)
1190          * are added to the arrays and we increment 'fontCount'.
1191          */
1192         nfonts = fontset->nfont;
1193         family   = (FcChar8**)calloc(nfonts, sizeof(FcChar8*));
1194         styleStr = (FcChar8**)calloc(nfonts, sizeof(FcChar8*));
1195         fullname = (FcChar8**)calloc(nfonts, sizeof(FcChar8*));
1196         file     = (FcChar8**)calloc(nfonts, sizeof(FcChar8*));
1197         if (family == NULL || styleStr == NULL ||
1198             fullname == NULL || file == NULL) {
1199             if (family != NULL) {
1200                 free(family);
1201             }
1202             if (styleStr != NULL) {
1203                 free(styleStr);
1204             }
1205             if (fullname != NULL) {
1206                 free(fullname);
1207             }
1208             if (file != NULL) {
1209                 free(file);
1210             }
1211             (*FcPatternDestroy)(pattern);
1212             (*FcFontSetDestroy)(fontset);
1213             closeFontConfig(libfontconfig, JNI_FALSE);
1214             return;
1215         }
1216         fontCount = 0;
1217         minGlyphs = 20;
1218         if (debugMinGlyphsStr != NULL) {
1219             int val = minGlyphs;
1220             sscanf(debugMinGlyphsStr, "%5d", &val);
1221             if (val >= 0 && val <= 65536) {
1222                 minGlyphs = val;
1223             }
1224         }
1225 
1226         for (j=0; j<nfonts; j++) {
1227             FcPattern *fontPattern = fontset->fonts[j];
1228             FcChar8 *fontformat;
1229             FcCharSet *charset = NULL;
1230 
1231             fontformat = NULL;
1232             (*FcPatternGetString)(fontPattern, FC_FONTFORMAT, 0, &fontformat);
1233             /* We only want TrueType fonts but some Linuxes still depend
1234              * on Type 1 fonts for some Locale support, so we'll allow
1235              * them there.
1236              */
1237             if (fontformat != NULL
1238                 && (strcmp((char*)fontformat, "TrueType") != 0)
1239 #if defined(__linux__) || defined(_AIX)
1240                 && (strcmp((char*)fontformat, "Type 1") != 0)
1241 #endif
1242              ) {
1243                 continue;
1244             }
1245             result = (*FcPatternGetCharSet)(fontPattern,
1246                                             FC_CHARSET, 0, &charset);
1247             if (result != FcResultMatch) {
1248                 free(family);
1249                 free(fullname);
1250                 free(styleStr);
1251                 free(file);
1252                 (*FcPatternDestroy)(pattern);
1253                 (*FcFontSetDestroy)(fontset);
1254                 closeFontConfig(libfontconfig, JNI_FALSE);
1255                 return;
1256             }
1257 
1258             /* We don't want 20 or 30 fonts, so once we hit 10 fonts,
1259              * then require that they really be adding value. Too many
1260              * adversely affects load time for minimal value-add.
1261              * This is still likely far more than we've had in the past.
1262              */
1263             if (j==10) {
1264                 minGlyphs = 50;
1265             }
1266             if (unionCharset == NULL) {
1267                 unionCharset = charset;
1268             } else {
1269                 if ((*FcCharSetSubtractCount)(charset, unionCharset)
1270                     > minGlyphs) {
1271                     unionCharset = (* FcCharSetUnion)(unionCharset, charset);
1272                 } else {
1273                     continue;
1274                 }
1275             }
1276 
1277             fontCount++; // found a font we will use.
1278             (*FcPatternGetString)(fontPattern, FC_FILE, 0, &file[j]);
1279             (*FcPatternGetString)(fontPattern, FC_FAMILY, 0, &family[j]);
1280             (*FcPatternGetString)(fontPattern, FC_STYLE, 0, &styleStr[j]);
1281             (*FcPatternGetString)(fontPattern, FC_FULLNAME, 0, &fullname[j]);
1282             if (!includeFallbacks) {
1283                 break;
1284             }
1285             if (fontCount == 254) {
1286                 break; // CompositeFont will only use up to 254 slots from here.
1287             }
1288         }
1289 
1290         /* Once we get here 'fontCount' is the number of returned fonts
1291          * we actually want to use, so we create 'fcFontArr' of that length.
1292          * The non-null entries of "family[]" etc are those fonts.
1293          * Then loop again over all nfonts adding just those non-null ones
1294          * to 'fcFontArr'. If its null (we didn't want the font)
1295          * then we don't enter the main body.
1296          * So we should never get more than 'fontCount' entries.
1297          */
1298         if (includeFallbacks) {
1299             fcFontArr =
1300                 (*env)->NewObjectArray(env, fontCount, fcFontClass, NULL);
1301             if (IS_NULL(fcFontArr)) {
1302                 free(family);
1303                 free(fullname);
1304                 free(styleStr);
1305                 free(file);
1306                 (*FcPatternDestroy)(pattern);
1307                 (*FcFontSetDestroy)(fontset);
1308                 closeFontConfig(libfontconfig, JNI_FALSE);
1309                 return;
1310             }
1311             (*env)->SetObjectField(env,fcCompFontObj, fcAllFontsID, fcFontArr);
1312         }
1313         fn=0;
1314 
1315         for (j=0;j<nfonts;j++) {
1316             if (family[j] != NULL) {
1317                 jobject fcFont =
1318                     (*env)->NewObject(env, fcFontClass, fcFontCons);
1319                 if (IS_NULL(fcFont)) break;
1320                 jstr = (*env)->NewStringUTF(env, (const char*)family[j]);
1321                 if (IS_NULL(jstr)) break;
1322                 (*env)->SetObjectField(env, fcFont, familyNameID, jstr);
1323                 if (file[j] != NULL) {
1324                     jstr = (*env)->NewStringUTF(env, (const char*)file[j]);
1325                     if (IS_NULL(jstr)) break;
1326                     (*env)->SetObjectField(env, fcFont, fontFileID, jstr);
1327                 }
1328                 if (styleStr[j] != NULL) {
1329                     jstr = (*env)->NewStringUTF(env, (const char*)styleStr[j]);
1330                     if (IS_NULL(jstr)) break;
1331                     (*env)->SetObjectField(env, fcFont, styleNameID, jstr);
1332                 }
1333                 if (fullname[j] != NULL) {
1334                     jstr = (*env)->NewStringUTF(env, (const char*)fullname[j]);
1335                     if (IS_NULL(jstr)) break;
1336                     (*env)->SetObjectField(env, fcFont, fullNameID, jstr);
1337                 }
1338                 if (fn==0) {
1339                     (*env)->SetObjectField(env, fcCompFontObj,
1340                                            fcFirstFontID, fcFont);
1341                 }
1342                 if (includeFallbacks) {
1343                     (*env)->SetObjectArrayElement(env, fcFontArr, fn++,fcFont);
1344                 } else {
1345                     break;
1346                 }
1347             }
1348         }
1349         (*FcFontSetDestroy)(fontset);
1350         (*FcPatternDestroy)(pattern);
1351         free(family);
1352         free(styleStr);
1353         free(fullname);
1354         free(file);
1355     }
1356 
1357     /* release resources and close the ".so" */
1358 
1359     if (locale) {
1360         (*env)->ReleaseStringUTFChars (env, localeStr, (const char*)locale);
1361     }
1362     closeFontConfig(libfontconfig, JNI_TRUE);
1363 }