From 7f6b0e3766a83a05aa7bf8351be5e3b478d5b7a6 Mon Sep 17 00:00:00 2001
From: Florian Frank <flori@ping.de>
Date: Fri, 3 Jun 2016 13:39:17 +0200
Subject: Force ASCII 8bit to be UTF-8 and hope for the best

---
 ext/json/ext/parser/parser.c  | 162 ++++++++++++++++++++++--------------------
 ext/json/ext/parser/parser.rl |  16 +++--
 2 files changed, 93 insertions(+), 85 deletions(-)

diff --git a/ext/json/ext/parser/parser.c b/ext/json/ext/parser/parser.c
index c63a462..5b2e61c 100644
--- a/ext/json/ext/parser/parser.c
+++ b/ext/json/ext/parser/parser.c
@@ -68,9 +68,8 @@ static int convert_UTF32_to_UTF8(char *buf, UTF32 ch)
 }
 
 #ifdef HAVE_RUBY_ENCODING_H
-static VALUE CEncoding_UTF_8;
-
-static ID i_encode;
+static VALUE CEncoding_ASCII_8BIT, CEncoding_UTF_8;
+static ID i_encoding, i_encode;
 #else
 static ID i_iconv;
 #endif
@@ -84,11 +83,11 @@ static ID i_json_creatable_p, i_json_create, i_create_id, i_create_additions,
           i_match_string, i_aset, i_aref, i_leftshift;
 
 
-#line 110 "parser.rl"
+#line 109 "parser.rl"
 
 
 
-#line 92 "parser.c"
+#line 91 "parser.c"
 static const int JSON_object_start = 1;
 static const int JSON_object_first_final = 27;
 static const int JSON_object_error = 0;
@@ -96,7 +95,7 @@ static const int JSON_object_error = 0;
 static const int JSON_object_en_main = 1;
 
 
-#line 151 "parser.rl"
+#line 150 "parser.rl"
 
 
 static char *JSON_parse_object(JSON_Parser *json, char *p, char *pe, VALUE *result)
@@ -112,14 +111,14 @@ static char *JSON_parse_object(JSON_Parser *json, char *p, char *pe, VALUE *resu
     *result = NIL_P(object_class) ? rb_hash_new() : rb_class_new_instance(0, 0, object_class);
 
 
-#line 116 "parser.c"
+#line 115 "parser.c"
 	{
 	cs = JSON_object_start;
 	}
 
-#line 166 "parser.rl"
+#line 165 "parser.rl"
 
-#line 123 "parser.c"
+#line 122 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -147,7 +146,7 @@ case 2:
 		goto st2;
 	goto st0;
 tr2:
-#line 133 "parser.rl"
+#line 132 "parser.rl"
 	{
         char *np;
         json->parsing_name = 1;
@@ -160,7 +159,7 @@ st3:
 	if ( ++p == pe )
 		goto _test_eof3;
 case 3:
-#line 164 "parser.c"
+#line 163 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st3;
 		case 32: goto st3;
@@ -227,7 +226,7 @@ case 8:
 		goto st8;
 	goto st0;
 tr11:
-#line 118 "parser.rl"
+#line 117 "parser.rl"
 	{
         VALUE v = Qnil;
         char *np = JSON_parse_value(json, p, pe, &v);
@@ -247,7 +246,7 @@ st9:
 	if ( ++p == pe )
 		goto _test_eof9;
 case 9:
-#line 251 "parser.c"
+#line 250 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st9;
 		case 32: goto st9;
@@ -336,14 +335,14 @@ case 18:
 		goto st9;
 	goto st18;
 tr4:
-#line 141 "parser.rl"
+#line 140 "parser.rl"
 	{ p--; {p++; cs = 27; goto _out;} }
 	goto st27;
 st27:
 	if ( ++p == pe )
 		goto _test_eof27;
 case 27:
-#line 347 "parser.c"
+#line 346 "parser.c"
 	goto st0;
 st19:
 	if ( ++p == pe )
@@ -441,7 +440,7 @@ case 26:
 	_out: {}
 	}
 
-#line 167 "parser.rl"
+#line 166 "parser.rl"
 
     if (cs >= JSON_object_first_final) {
         if (json->create_additions) {
@@ -466,7 +465,7 @@ case 26:
 
 
 
-#line 470 "parser.c"
+#line 469 "parser.c"
 static const int JSON_value_start = 1;
 static const int JSON_value_first_final = 29;
 static const int JSON_value_error = 0;
@@ -474,7 +473,7 @@ static const int JSON_value_error = 0;
 static const int JSON_value_en_main = 1;
 
 
-#line 271 "parser.rl"
+#line 270 "parser.rl"
 
 
 static char *JSON_parse_value(JSON_Parser *json, char *p, char *pe, VALUE *result)
@@ -482,14 +481,14 @@ static char *JSON_parse_value(JSON_Parser *json, char *p, char *pe, VALUE *resul
     int cs = EVIL;
 
 
-#line 486 "parser.c"
+#line 485 "parser.c"
 	{
 	cs = JSON_value_start;
 	}
 
-#line 278 "parser.rl"
+#line 277 "parser.rl"
 
-#line 493 "parser.c"
+#line 492 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -523,14 +522,14 @@ st0:
 cs = 0;
 	goto _out;
 tr2:
-#line 219 "parser.rl"
+#line 218 "parser.rl"
 	{
         char *np = JSON_parse_string(json, p, pe, result);
         if (np == NULL) { p--; {p++; cs = 29; goto _out;} } else {p = (( np))-1;}
     }
 	goto st29;
 tr3:
-#line 224 "parser.rl"
+#line 223 "parser.rl"
 	{
         char *np;
         if(pe > p + 8 && !strncmp(MinusInfinity, p, 9)) {
@@ -550,7 +549,7 @@ tr3:
     }
 	goto st29;
 tr7:
-#line 242 "parser.rl"
+#line 241 "parser.rl"
 	{
         char *np;
         json->current_nesting++;
@@ -560,7 +559,7 @@ tr7:
     }
 	goto st29;
 tr11:
-#line 250 "parser.rl"
+#line 249 "parser.rl"
 	{
         char *np;
         json->current_nesting++;
@@ -570,7 +569,7 @@ tr11:
     }
 	goto st29;
 tr25:
-#line 212 "parser.rl"
+#line 211 "parser.rl"
 	{
         if (json->allow_nan) {
             *result = CInfinity;
@@ -580,7 +579,7 @@ tr25:
     }
 	goto st29;
 tr27:
-#line 205 "parser.rl"
+#line 204 "parser.rl"
 	{
         if (json->allow_nan) {
             *result = CNaN;
@@ -590,19 +589,19 @@ tr27:
     }
 	goto st29;
 tr31:
-#line 199 "parser.rl"
+#line 198 "parser.rl"
 	{
         *result = Qfalse;
     }
 	goto st29;
 tr34:
-#line 196 "parser.rl"
+#line 195 "parser.rl"
 	{
         *result = Qnil;
     }
 	goto st29;
 tr37:
-#line 202 "parser.rl"
+#line 201 "parser.rl"
 	{
         *result = Qtrue;
     }
@@ -611,9 +610,9 @@ st29:
 	if ( ++p == pe )
 		goto _test_eof29;
 case 29:
-#line 258 "parser.rl"
+#line 257 "parser.rl"
 	{ p--; {p++; cs = 29; goto _out;} }
-#line 617 "parser.c"
+#line 616 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st29;
 		case 32: goto st29;
@@ -854,7 +853,7 @@ case 28:
 	_out: {}
 	}
 
-#line 279 "parser.rl"
+#line 278 "parser.rl"
 
     if (cs >= JSON_value_first_final) {
         return p;
@@ -864,7 +863,7 @@ case 28:
 }
 
 
-#line 868 "parser.c"
+#line 867 "parser.c"
 static const int JSON_integer_start = 1;
 static const int JSON_integer_first_final = 3;
 static const int JSON_integer_error = 0;
@@ -872,7 +871,7 @@ static const int JSON_integer_error = 0;
 static const int JSON_integer_en_main = 1;
 
 
-#line 295 "parser.rl"
+#line 294 "parser.rl"
 
 
 static char *JSON_parse_integer(JSON_Parser *json, char *p, char *pe, VALUE *result)
@@ -880,15 +879,15 @@ static char *JSON_parse_integer(JSON_Parser *json, char *p, char *pe, VALUE *res
     int cs = EVIL;
 
 
-#line 884 "parser.c"
+#line 883 "parser.c"
 	{
 	cs = JSON_integer_start;
 	}
 
-#line 302 "parser.rl"
+#line 301 "parser.rl"
     json->memo = p;
 
-#line 892 "parser.c"
+#line 891 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -922,14 +921,14 @@ case 3:
 		goto st0;
 	goto tr4;
 tr4:
-#line 292 "parser.rl"
+#line 291 "parser.rl"
 	{ p--; {p++; cs = 4; goto _out;} }
 	goto st4;
 st4:
 	if ( ++p == pe )
 		goto _test_eof4;
 case 4:
-#line 933 "parser.c"
+#line 932 "parser.c"
 	goto st0;
 st5:
 	if ( ++p == pe )
@@ -948,7 +947,7 @@ case 5:
 	_out: {}
 	}
 
-#line 304 "parser.rl"
+#line 303 "parser.rl"
 
     if (cs >= JSON_integer_first_final) {
         long len = p - json->memo;
@@ -963,7 +962,7 @@ case 5:
 }
 
 
-#line 967 "parser.c"
+#line 966 "parser.c"
 static const int JSON_float_start = 1;
 static const int JSON_float_first_final = 8;
 static const int JSON_float_error = 0;
@@ -971,7 +970,7 @@ static const int JSON_float_error = 0;
 static const int JSON_float_en_main = 1;
 
 
-#line 329 "parser.rl"
+#line 328 "parser.rl"
 
 
 static char *JSON_parse_float(JSON_Parser *json, char *p, char *pe, VALUE *result)
@@ -979,15 +978,15 @@ static char *JSON_parse_float(JSON_Parser *json, char *p, char *pe, VALUE *resul
     int cs = EVIL;
 
 
-#line 983 "parser.c"
+#line 982 "parser.c"
 	{
 	cs = JSON_float_start;
 	}
 
-#line 336 "parser.rl"
+#line 335 "parser.rl"
     json->memo = p;
 
-#line 991 "parser.c"
+#line 990 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -1045,14 +1044,14 @@ case 8:
 		goto st0;
 	goto tr9;
 tr9:
-#line 323 "parser.rl"
+#line 322 "parser.rl"
 	{ p--; {p++; cs = 9; goto _out;} }
 	goto st9;
 st9:
 	if ( ++p == pe )
 		goto _test_eof9;
 case 9:
-#line 1056 "parser.c"
+#line 1055 "parser.c"
 	goto st0;
 st5:
 	if ( ++p == pe )
@@ -1113,7 +1112,7 @@ case 7:
 	_out: {}
 	}
 
-#line 338 "parser.rl"
+#line 337 "parser.rl"
 
     if (cs >= JSON_float_first_final) {
         long len = p - json->memo;
@@ -1129,7 +1128,7 @@ case 7:
 
 
 
-#line 1133 "parser.c"
+#line 1132 "parser.c"
 static const int JSON_array_start = 1;
 static const int JSON_array_first_final = 17;
 static const int JSON_array_error = 0;
@@ -1137,7 +1136,7 @@ static const int JSON_array_error = 0;
 static const int JSON_array_en_main = 1;
 
 
-#line 381 "parser.rl"
+#line 380 "parser.rl"
 
 
 static char *JSON_parse_array(JSON_Parser *json, char *p, char *pe, VALUE *result)
@@ -1151,14 +1150,14 @@ static char *JSON_parse_array(JSON_Parser *json, char *p, char *pe, VALUE *resul
     *result = NIL_P(array_class) ? rb_ary_new() : rb_class_new_instance(0, 0, array_class);
 
 
-#line 1155 "parser.c"
+#line 1154 "parser.c"
 	{
 	cs = JSON_array_start;
 	}
 
-#line 394 "parser.rl"
+#line 393 "parser.rl"
 
-#line 1162 "parser.c"
+#line 1161 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -1197,7 +1196,7 @@ case 2:
 		goto st2;
 	goto st0;
 tr2:
-#line 358 "parser.rl"
+#line 357 "parser.rl"
 	{
         VALUE v = Qnil;
         char *np = JSON_parse_value(json, p, pe, &v);
@@ -1217,7 +1216,7 @@ st3:
 	if ( ++p == pe )
 		goto _test_eof3;
 case 3:
-#line 1221 "parser.c"
+#line 1220 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st3;
 		case 32: goto st3;
@@ -1317,14 +1316,14 @@ case 12:
 		goto st3;
 	goto st12;
 tr4:
-#line 373 "parser.rl"
+#line 372 "parser.rl"
 	{ p--; {p++; cs = 17; goto _out;} }
 	goto st17;
 st17:
 	if ( ++p == pe )
 		goto _test_eof17;
 case 17:
-#line 1328 "parser.c"
+#line 1327 "parser.c"
 	goto st0;
 st13:
 	if ( ++p == pe )
@@ -1380,7 +1379,7 @@ case 16:
 	_out: {}
 	}
 
-#line 395 "parser.rl"
+#line 394 "parser.rl"
 
     if(cs >= JSON_array_first_final) {
         return p + 1;
@@ -1461,7 +1460,7 @@ static VALUE json_string_unescape(VALUE result, char *string, char *stringEnd)
 }
 
 
-#line 1465 "parser.c"
+#line 1464 "parser.c"
 static const int JSON_string_start = 1;
 static const int JSON_string_first_final = 8;
 static const int JSON_string_error = 0;
@@ -1469,7 +1468,7 @@ static const int JSON_string_error = 0;
 static const int JSON_string_en_main = 1;
 
 
-#line 494 "parser.rl"
+#line 493 "parser.rl"
 
 
 static int
@@ -1491,15 +1490,15 @@ static char *JSON_parse_string(JSON_Parser *json, char *p, char *pe, VALUE *resu
 
     *result = rb_str_buf_new(0);
 
-#line 1495 "parser.c"
+#line 1494 "parser.c"
 	{
 	cs = JSON_string_start;
 	}
 
-#line 515 "parser.rl"
+#line 514 "parser.rl"
     json->memo = p;
 
-#line 1503 "parser.c"
+#line 1502 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -1524,7 +1523,7 @@ case 2:
 		goto st0;
 	goto st2;
 tr2:
-#line 480 "parser.rl"
+#line 479 "parser.rl"
 	{
         *result = json_string_unescape(*result, json->memo + 1, p);
         if (NIL_P(*result)) {
@@ -1535,14 +1534,14 @@ tr2:
             {p = (( p + 1))-1;}
         }
     }
-#line 491 "parser.rl"
+#line 490 "parser.rl"
 	{ p--; {p++; cs = 8; goto _out;} }
 	goto st8;
 st8:
 	if ( ++p == pe )
 		goto _test_eof8;
 case 8:
-#line 1546 "parser.c"
+#line 1545 "parser.c"
 	goto st0;
 st3:
 	if ( ++p == pe )
@@ -1618,7 +1617,7 @@ case 7:
 	_out: {}
 	}
 
-#line 517 "parser.rl"
+#line 516 "parser.rl"
 
     if (json->create_additions && RTEST(match_string = json->match_string)) {
           VALUE klass;
@@ -1656,9 +1655,12 @@ case 7:
 static VALUE convert_encoding(VALUE source)
 {
 #ifdef HAVE_RUBY_ENCODING_H
-    {
-        source = rb_funcall(source, i_encode, 1, CEncoding_UTF_8);
-    }
+  VALUE encoding = rb_funcall(source, i_encoding, 0);
+  if (encoding == CEncoding_ASCII_8BIT) {
+    FORCE_UTF8(source);
+  } else {
+    source = rb_funcall(source, i_encode, 1, CEncoding_UTF_8);
+  }
 #endif
     return source;
 }
@@ -1784,7 +1786,7 @@ static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
 }
 
 
-#line 1788 "parser.c"
+#line 1790 "parser.c"
 static const int JSON_start = 1;
 static const int JSON_first_final = 10;
 static const int JSON_error = 0;
@@ -1792,7 +1794,7 @@ static const int JSON_error = 0;
 static const int JSON_en_main = 1;
 
 
-#line 696 "parser.rl"
+#line 698 "parser.rl"
 
 
 /*
@@ -1809,16 +1811,16 @@ static VALUE cParser_parse(VALUE self)
   GET_PARSER;
 
 
-#line 1813 "parser.c"
+#line 1815 "parser.c"
 	{
 	cs = JSON_start;
 	}
 
-#line 712 "parser.rl"
+#line 714 "parser.rl"
   p = json->source;
   pe = p + json->len;
 
-#line 1822 "parser.c"
+#line 1824 "parser.c"
 	{
 	if ( p == pe )
 		goto _test_eof;
@@ -1852,7 +1854,7 @@ st0:
 cs = 0;
 	goto _out;
 tr2:
-#line 688 "parser.rl"
+#line 690 "parser.rl"
 	{
         char *np = JSON_parse_value(json, p, pe, &result);
         if (np == NULL) { p--; {p++; cs = 10; goto _out;} } else {p = (( np))-1;}
@@ -1862,7 +1864,7 @@ st10:
 	if ( ++p == pe )
 		goto _test_eof10;
 case 10:
-#line 1866 "parser.c"
+#line 1868 "parser.c"
 	switch( (*p) ) {
 		case 13: goto st10;
 		case 32: goto st10;
@@ -1951,7 +1953,7 @@ case 9:
 	_out: {}
 	}
 
-#line 715 "parser.rl"
+#line 717 "parser.rl"
 
   if (cs >= JSON_first_final && p == pe) {
     return result;
@@ -2051,6 +2053,8 @@ void Init_parser(void)
     i_leftshift = rb_intern("<<");
 #ifdef HAVE_RUBY_ENCODING_H
     CEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
+    CEncoding_ASCII_8BIT = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("ascii-8bit"));
+    i_encoding = rb_intern("encoding");
     i_encode = rb_intern("encode");
 #else
     i_iconv = rb_intern("iconv");
diff --git a/ext/json/ext/parser/parser.rl b/ext/json/ext/parser/parser.rl
index 6f73307..f3933cb 100644
--- a/ext/json/ext/parser/parser.rl
+++ b/ext/json/ext/parser/parser.rl
@@ -66,9 +66,8 @@ static int convert_UTF32_to_UTF8(char *buf, UTF32 ch)
 }
 
 #ifdef HAVE_RUBY_ENCODING_H
-static VALUE CEncoding_UTF_8;
-
-static ID i_encode;
+static VALUE CEncoding_ASCII_8BIT, CEncoding_UTF_8;
+static ID i_encoding, i_encode;
 #else
 static ID i_iconv;
 #endif
@@ -551,9 +550,12 @@ static char *JSON_parse_string(JSON_Parser *json, char *p, char *pe, VALUE *resu
 static VALUE convert_encoding(VALUE source)
 {
 #ifdef HAVE_RUBY_ENCODING_H
-    {
-        source = rb_funcall(source, i_encode, 1, CEncoding_UTF_8);
-    }
+  VALUE encoding = rb_funcall(source, i_encoding, 0);
+  if (encoding == CEncoding_ASCII_8BIT) {
+    FORCE_UTF8(source);
+  } else {
+    source = rb_funcall(source, i_encode, 1, CEncoding_UTF_8);
+  }
 #endif
     return source;
 }
@@ -811,6 +813,8 @@ void Init_parser(void)
     i_leftshift = rb_intern("<<");
 #ifdef HAVE_RUBY_ENCODING_H
     CEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
+    CEncoding_ASCII_8BIT = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("ascii-8bit"));
+    i_encoding = rb_intern("encoding");
     i_encode = rb_intern("encode");
 #else
     i_iconv = rb_intern("iconv");
-- 
cgit v1.2.1