1 /* Copyright (C) 2005, 2007, 2008 by George Williams */
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
6 * Redistributions of source code must retain the above copyright notice, this
7 * list of conditions and the following disclaimer.
9 * Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
13 * The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 /* modified by Werner Lemberg <wl@gnu.org> */
29 /* This file is now part of the FreeType library */
36 #include <sys/types.h>
46 #include FT_FREETYPE_H
51 #define forever for (;;)
54 static int check_outlines = false;
55 static int nohints = false;
56 static int rasterize = false;
57 static char* results_dir = "results";
59 #define GOOD_FONTS_DIR "/home/wl/freetype-testfonts"
61 static char* default_dir_list[] =
67 static char* default_ext_list[] =
84 static int error_count = 1;
85 static int error_fraction = 0;
87 static FT_F26Dot6 font_size = 12 * 64;
89 static struct fontlist
93 unsigned int isbinary: 1;
94 unsigned int isascii: 1;
95 unsigned int ishex: 1;
103 FT_MoveTo( const FT_Vector *to,
111 FT_LineTo( const FT_Vector *to,
119 FT_ConicTo( const FT_Vector *_cp,
128 FT_CubicTo( const FT_Vector *cp1,
129 const FT_Vector *cp2,
137 static FT_Outline_Funcs outlinefuncs =
143 0, 0 /* No shift, no delta */
148 TestFace( FT_Face face )
151 int load_flags = FT_LOAD_DEFAULT;
154 if ( check_outlines &&
155 FT_IS_SCALABLE( face ) )
156 load_flags = FT_LOAD_NO_BITMAP;
159 load_flags |= FT_LOAD_NO_HINTING;
161 FT_Set_Char_Size( face, 0, font_size, 72, 72 );
163 for ( gid = 0; gid < face->num_glyphs; ++gid )
165 if ( check_outlines &&
166 FT_IS_SCALABLE( face ) )
168 if ( !FT_Load_Glyph( face, gid, load_flags ) )
169 FT_Outline_Decompose( &face->glyph->outline, &outlinefuncs, NULL );
172 FT_Load_Glyph( face, gid, load_flags );
175 FT_Render_Glyph( face->glyph, ft_render_mode_normal );
178 FT_Done_Face( face );
183 ExecuteTest( char* testfont )
190 if ( FT_Init_FreeType( &context ) )
192 fprintf( stderr, "Can't initialize FreeType.\n" );
196 if ( FT_New_Face( context, testfont, 0, &face ) )
198 /* The font is erroneous, so if this fails that's ok. */
202 if ( face->num_faces == 1 )
206 num = face->num_faces;
207 FT_Done_Face( face );
209 for ( i = 0; i < num; ++i )
211 if ( !FT_New_Face( context, testfont, i, &face ) )
221 extmatch( char* filename,
228 if ( extensions == NULL )
231 pt = strrchr( filename, '.' );
234 if ( pt < strrchr( filename, '/' ) )
237 for ( i = 0; extensions[i] != NULL; ++i )
238 if ( strcasecmp( pt + 1, extensions[i] ) == 0 ||
239 strcasecmp( pt, extensions[i] ) == 0 )
247 figurefiletype( struct fontlist* item )
252 item->isbinary = item->isascii = item->ishex = false;
254 foo = fopen( item->name, "rb" );
257 /* Try to guess the file type from the first few characters... */
258 int ch1 = getc( foo );
259 int ch2 = getc( foo );
260 int ch3 = getc( foo );
261 int ch4 = getc( foo );
266 if ( ( ch1 == 0 && ch2 == 1 && ch3 == 0 && ch4 == 0 ) ||
267 ( ch1 == 'O' && ch2 == 'T' && ch3 == 'T' && ch4 == 'O' ) ||
268 ( ch1 == 't' && ch2 == 'r' && ch3 == 'u' && ch4 == 'e' ) ||
269 ( ch1 == 't' && ch2 == 't' && ch3 == 'c' && ch4 == 'f' ) )
271 /* ttf, otf, ttc files */
272 item->isbinary = true;
274 else if ( ch1 == 0x80 && ch2 == '\01' )
277 item->isbinary = true;
279 else if ( ch1 == '%' && ch2 == '!' )
281 /* Random PostScript */
282 if ( strstr( item->name, ".pfa" ) != NULL ||
283 strstr( item->name, ".PFA" ) != NULL )
286 item->isascii = true;
288 else if ( ch1 == 1 && ch2 == 0 && ch3 == 4 )
291 item->isbinary = true;
293 else if ( ch1 == 'S' && ch2 == 'T' && ch3 == 'A' && ch4 == 'R' )
298 else if ( ch1 == 'P' && ch2 == 'F' && ch3 == 'R' && ch4 == '0' )
301 item->isbinary = true;
303 else if ( ( ch1 == '\1' && ch2 == 'f' && ch3 == 'c' && ch4 == 'p' ) ||
304 ( ch1 == 'M' && ch2 == 'Z' ) )
307 item->isbinary = true;
312 "Can't recognize file type of `%s', assuming binary\n",
314 item->isbinary = true;
319 fprintf( stderr, "Can't open `%s' for typing the file.\n",
321 item->isbinary = true;
327 FindFonts( char** fontdirs,
341 for ( i = 0; fontdirs[i] != NULL; ++i )
343 examples = opendir( fontdirs[i] );
344 if ( examples == NULL )
347 "Can't open example font directory `%s'\n",
352 while ( ( ent = readdir( examples ) ) != NULL )
354 snprintf( buffer, sizeof ( buffer ),
355 "%s/%s", fontdirs[i], ent->d_name );
356 if ( stat( buffer, &statb ) == -1 || S_ISDIR( statb.st_mode ) )
358 if ( extensions == NULL || extmatch( buffer, extensions ) )
363 fontlist = realloc( fontlist, max * sizeof ( struct fontlist ) );
364 if ( fontlist == NULL )
366 fprintf( stderr, "Can't allocate memory\n" );
371 fontlist[fcnt].name = strdup( buffer );
372 fontlist[fcnt].len = statb.st_size;
374 figurefiletype( &fontlist[fcnt] );
379 closedir( examples );
384 fprintf( stderr, "Can't find matching font files.\n" );
388 fontlist[fcnt].name = NULL;
393 getErrorCnt( struct fontlist* item )
395 if ( error_count == 0 && error_fraction == 0 )
398 return error_count + ceil( error_fraction * item->len );
406 if ( low - high < 0x10000L )
407 return low + ( ( random() >> 8 ) % ( high + 1 - low ) );
409 return low + ( random() % ( high + 1 - low ) );
414 copyfont( struct fontlist* item,
417 static char buffer[8096];
423 good = fopen( item->name, "r" );
426 fprintf( stderr, "Can't open `%s'\n", item->name );
430 new = fopen( newfont, "w+" );
433 fprintf( stderr, "Can't create temporary output file `%s'\n",
438 while ( ( len = fread( buffer, 1, sizeof ( buffer ), good ) ) > 0 )
439 fwrite( buffer, 1, len, new );
443 err_cnt = getErrorCnt( item );
444 for ( i = 0; i < err_cnt; ++i )
446 fseek( new, getRandom( 0, item->len - 1 ), SEEK_SET );
448 if ( item->isbinary )
449 putc( getRandom( 0, 0xff ), new );
450 else if ( item->isascii )
451 putc( getRandom( 0x20, 0x7e ), new );
454 int hex = getRandom( 0, 15 );
479 static int child_pid;
482 abort_test( int sig )
484 /* If a time-out happens, then kill the child */
485 kill( child_pid, SIGFPE );
486 write( 2, "Timeout... ", 11 );
493 int i = getRandom( 0, fcnt - 1 );
494 static int test_num = 0;
498 sprintf( buffer, "%s/test%d", results_dir, test_num++ );
500 if ( copyfont ( &fontlist[i], buffer ) )
502 signal( SIGALRM, abort_test );
503 /* Anything that takes more than 20 seconds */
504 /* to parse and/or rasterize is an error. */
506 if ( ( child_pid = fork() ) == 0 )
507 ExecuteTest( buffer );
508 else if ( child_pid != -1 )
513 waitpid( child_pid, &status, 0 );
515 if ( WIFSIGNALED ( status ) )
516 printf( "Error found in file `%s'\n", buffer );
522 fprintf( stderr, "Can't fork test case.\n" );
534 fprintf( out, "%s [options] -- Generate random erroneous fonts\n"
535 " and attempt to parse them with FreeType.\n\n", name );
537 fprintf( out, " --all All non-directory files are assumed to be fonts.\n" );
538 fprintf( out, " --check-outlines Make sure we can parse the outlines of each glyph.\n" );
539 fprintf( out, " --dir <path> Append <path> to list of font search directories.\n" );
540 fprintf( out, " --error-count <cnt> Introduce <cnt> single byte errors into each font.\n" );
541 fprintf( out, " --error-fraction <frac> Introduce <frac>*filesize single byte errors\n"
542 " into each font.\n" );
543 fprintf( out, " --ext <ext> Add <ext> to list of extensions indicating fonts.\n" );
544 fprintf( out, " --help Print this.\n" );
545 fprintf( out, " --nohints Turn off hinting.\n" );
546 fprintf( out, " --rasterize Attempt to rasterize each glyph.\n" );
547 fprintf( out, " --results <dir> Directory in which to place the test fonts.\n" );
548 fprintf( out, " --size <float> Use the given font size for the tests.\n" );
549 fprintf( out, " --test <file> Run a single test on an already existing file.\n" );
559 int dcnt = 0, ecnt = 0, rset = false, allexts = false;
562 char* testfile = NULL;
565 dirs = calloc( argc + 1, sizeof ( char ** ) );
566 exts = calloc( argc + 1, sizeof ( char ** ) );
568 for ( i = 1; i < argc; ++i )
571 if ( pt[0] == '-' && pt[1] == '-' )
574 if ( strcmp( pt, "-all" ) == 0 )
576 else if ( strcmp( pt, "-check-outlines" ) == 0 )
577 check_outlines = true;
578 else if ( strcmp( pt, "-dir" ) == 0 )
579 dirs[dcnt++] = argv[++i];
580 else if ( strcmp( pt, "-error-count" ) == 0 )
585 error_count = strtol( argv[++i], &end, 10 );
588 fprintf( stderr, "Bad value for error-count: %s\n", argv[i] );
592 else if ( strcmp( pt, "-error-fraction" ) == 0 )
597 error_fraction = strtod( argv[++i], &end );
600 fprintf( stderr, "Bad value for error-fraction: %s\n", argv[i] );
604 else if ( strcmp( pt, "-ext" ) == 0 )
605 exts[ecnt++] = argv[++i];
606 else if ( strcmp( pt, "-help" ) == 0 )
608 usage( stdout, argv[0] );
611 else if ( strcmp( pt, "-nohints" ) == 0 )
613 else if ( strcmp( pt, "-rasterize" ) == 0 )
615 else if ( strcmp( pt, "-results" ) == 0 )
616 results_dir = argv[++i];
617 else if ( strcmp( pt, "-size" ) == 0 )
619 font_size = (FT_F26Dot6)( strtod( argv[++i], &end ) * 64 );
620 if ( *end != '\0' || font_size < 64 )
622 fprintf( stderr, "Bad value for size: %s\n", argv[i] );
626 else if ( strcmp( pt, "-test" ) == 0 )
627 testfile = argv[++i];
630 usage( stderr, argv[0] );
637 else if ( ecnt == 0 )
638 exts = default_ext_list;
641 dirs = default_dir_list;
643 if ( testfile != NULL )
644 ExecuteTest( testfile ); /* This should never return */
649 FindFonts( dirs, exts );
650 mkdir( results_dir, 0755 );