Revert "Pull chromium at 2c3ffb2355a27c32f45e508ef861416b820c823b"

third_party/ots/test/README

Index: third_party/ots/test/README
diff --git a/third_party/ots/test/README b/third_party/ots/test/README
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-------------------------------------------------------------------------------
-ot-sanitise - TTF/OTF font validator/transcoder
-
-Description:
-  ot-sanitise is a program which validates and/or transcodes a truetype or
-  opentype font file using the OTS library:
-
-      transcoded_font = ValidateAndTranscode(original_font);
-      if (validation_error)
-        PrintErrorAndExit;
-      OutputToStdout(transcoded_font);
-
-Usage:
-  $ ./ot-sanitise ttf_or_otf_file [transcoded_file]
-
-Example:
-  $ ./ot-sanitise sample.otf transcoded_sample.otf
-  $ ./ot-sanitise malformed.ttf
-  WARNING at ots/src/ots.cc:158: bad range shift
-  ERROR at ots/src/ots.cc:199 (bool<unnamed>::do_ots_process(ots::OpenTypeFile*, ots::OTSStream*, const uint8_t*, size_t))
-  Failed to sanitise file!
-  $
-
-------------------------------------------------------------------------------
-idempotent - TTF/OTF font transcoder (for OTS debugging)
-
-Description:
-  idempotent is a program which validates and transcodes a truetype or opentype
-  font file using OTS. This tool transcodes the original font twice and then
-  verifies that the two transcoded fonts are identical:
-
-      t1 = ValidateAndTranscode(original_font);
-      if (validation_error)
-        PrintErrorAndExit;
-      t2 = ValidateAndTranscode(t1);
-      if (validation_error)
-        PrintErrorAndExit;
-      if (t1 != t2)
-        PrintErrorAndExit;
-
-  This tool is basically for OTS developers.
-
-Usage:
-  $ ./idempotent ttf_or_otf_file
-
-Example:
-  $ ./idempotent sample.otf
-  $ ./idempotent malformed.ttf
-  WARNING at ots/src/ots.cc:158: bad range shift
-  ERROR at ots/src/ots.cc:199 (bool<unnamed>::do_ots_process(ots::OpenTypeFile*, ots::OTSStream*, const uint8_t*, size_t))
-  Failed to sanitise file!
-  $
-
-------------------------------------------------------------------------------
-validator_checker - font validation checker
-
-Description:
-  validator_checker is a program which is intended to validate malformed fonts.
-  If the program detects that the font is invalid, it prints "OK" and returns
-  with 0 (success). If it coulndn't detect any errors, the program then opens
-  the transcoded font and renders some characters using FreeType2:
-
-      transcoded_font = ValidateAndTranscode(malicious_font);
-      if (validation_error)
-        Print("OK");
-      OpenAndRenderSomeCharacters(transcoded_font);  # may cause SIGSEGV
-      Print("OK");
-
-  If SEGV doesn't raise inside FreeType2 library, the program prints "OK" and
-  returns with 0 as well. You should run this tool under the catchsegv or
-  valgrind command so that you can easily verify that all transformed fonts
-  don't crash the library (see the example below).
-
-Usage:
-  $ catchsegv ./validator_checker malicous_ttf_or_otf_file
-
-Example:
-  $ for f in malformed/*.ttf ; do catchsegv ./validator-checker "$f" ; done
-  OK: the malicious font was filtered: malformed/1.ttf
-  OK: the malicious font was filtered: malformed/2.ttf
-  OK: FreeType2 didn't crash: malformed/3.ttf
-  OK: the malicious font was filtered: malformed/4.ttf
-  $
-
-------------------------------------------------------------------------------
-perf - performance checker
-
-Description:
-  perf is a program which validates and transcodes a truetype or opentype font
-  file N times using OTS, then prints the elapsed time:
-
-      for (N times)
-        ValidateAndTranscode(original_font);
-      Print(elapsed_time_in_us / N);
-
-Usage:
-  $ ./perf ttf_or_otf_file
-
-Example:
-  $ ./perf sample.ttf 
-  903 [us] sample.ttf (139332 bytes, 154 [byte/us])
-  $ ./perf sample-bold.otf
-  291 [us] sample-bold.otf (150652 bytes, 517 [byte/us])
-
-------------------------------------------------------------------------------
-side-by-side - font quality checker
-
-Description:
-  side-by-side is a program which renders some characters (ASCII, Latin-1, CJK)
-  using both original font and transcoded font and checks that the two rendering
-  results are exactly equal.
-
-  The following Unicode characters are used during the test:
-    0x0020 - 0x007E  // Basic Latin
-    0x00A1 - 0x017F  // Latin-1
-    0x1100 - 0x11FF  // Hangul
-    0x3040 - 0x309F  // Japanese HIRAGANA letters
-    0x3130 - 0x318F  // Hangul
-    0x4E00 - 0x4F00  // CJK Kanji/Hanja
-    0xAC00 - 0xAD00  // Hangul
-
-  This tool uses FreeType2 library.
-  Note: This tool doesn't check kerning (GPOS/kern) nor font substitution
-  (GSUB). These should be tested in Layout tests if necessary.
-
-Usage:
-  $ ./side-by-side ttf_or_otf_file
-
-Example:
-  $ ./side-by-side linux/kochi-gothic.ttf  # no problem
-  $ ./side-by-side free/kredit1.ttf        # this is known issue of OTS.
-  bitmap metrics doesn't match! (14, 57), (37, 45)
-  EXPECTED:
-                
-    +#######*.  
-   +##########+ 
-  .###+.#.   .#.
-  *#*   #     #*
-  ##.   #     ##
-  ##    #     ##
-  ##    #     ##
-  ##    #.    ##
-  ##.   #.   .##
-  ##.   #.   .##
-  *#+   *+   +#*
-  *#+   *+   +#*
-  *#+   *+   +#*
-  *#+   *+   +#*
-  *#+   *+   *#*
-  *#+   ++   *#+
-  +#*   +*   *#+
-  +#*   +*   *#+
-  +#*   +*   *#+
-  +#*   +*   ##.
-  +#*   +*   ##.
-  .##   .#   ## 
-  .##   .#   ## 
-  .##   .#   ## 
-   ##    #   ## 
-   ##    #   ## 
-   ##    #  .## 
-   ##    #  .## 
-   ##   .#+ +#* 
-   ##  +######* 
-   ##.+#######* 
-   *##########* 
-   +##########+ 
-    #########*  
-    .########   
-      +####+    
-                
-                
-                
-                
-                
-                
-    .*######*   
-   +##*.*#####  
-  .##+.#+    +# 
-  *#* ##      #+
-  ##*###      ##
-  ######      ##
-  ##+.##+    +##
-  ##  ##########
-  ##  +#########
-  ##   +########
-  *#. .########*
-  .#* #########.
-   +##########+ 
-    +*######*   
-  
-  ACTUAL:
-
-    .*##*+                             
-   +##+.##*.                           
-  .#* .##.+#*                          
-  *#  ###   *#+                        
-  #*######+  .*#+                      
-  #########*.  +#*.                    
-  ###########*   +#*                   
-  *############+   *#+                 
-  +##############.  .##.               
-   *##############*   +#*              
-    +###############+   *#+            
-      *###############+  .*#+          
-       .###############*.  +#*.        
-         +###############*   +#*       
-           *###############+   *#+     
-            .*###############+  .*#+   
-              +###############*.  +#*  
-                +###############*   ** 
-                  *###############+  #+
-                   .###############* ##
-                     +############+  ##
-                       +########*   .##
-                        .######.   +###
-                       +#####+   .*#..#
-                     +#####*    *###..#
-                    *#####.   +#######*
-                  +#####+   .*########.
-                +#####*    +#########* 
-               *#####.   +##########+  
-             +#####+    *#########*.   
-           .#####*    +##########+     
-          *#####.   +##########*       
-        +#####+    *#########*.        
-      .#####*    +##########+          
-     *#####+   +##########*            
-   .#*++#+    *#########*.             
-  .#+  ##   +##########+               
-  ****###+.##########*                 
-  ##################.                  
-  ###+  *#########+                    
-  ##   +########*                      
-  *#+ *########.                       
-   ##.#######+                         
-   +#######*                           
-     *###*.                            
-  
-  
-  Glyph mismatch! (file: free/kredit1.ttf, U+0021, 100pt)!
-  $
-------------------------------------------------------------------------------