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Initial import of jsond

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This commit is contained in:
Jakub Zelenka 2014-11-13 20:20:46 +00:00
parent 12cf41ca35
commit d07bf91328
10 changed files with 693 additions and 200 deletions
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2
ext/json/CREDITS
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@ -1,2 +1,2 @@
JSON
Omar Kilani, Scott MacVicar
Jakub Zelenka, Omar Kilani, Scott MacVicar

5
ext/json/Makefile.frag Normal file
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@ -0,0 +1,5 @@
$(srcdir)/json_scanner.c: $(srcdir)/json_scanner.re
$(RE2C) -t php_json_scanner_defs.h --no-generation-date -bci -o $@ json_scanner.re
$(srcdir)/json_parser.tab.c: $(srcdir)/json_parser.y
$(YACC) --defines -l $(srcdir)/json_parser.y -o $@

7
ext/json/config.m4
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@ -9,7 +9,12 @@ if test "$PHP_JSON" != "no"; then
AC_DEFINE([HAVE_JSON],1 ,[whether to enable JavaScript Object Serialization support])
AC_HEADER_STDC
PHP_NEW_EXTENSION(json, json.c utf8_decode.c JSON_parser.c, $ext_shared)
PHP_NEW_EXTENSION(json,
json.c \
json_parser.tab.c \
json_scanner.c,
$ext_shared)
PHP_INSTALL_HEADERS([ext/json], [php_json.h])
PHP_ADD_MAKEFILE_FRAGMENT()
PHP_SUBST(JSON_SHARED_LIBADD)
fi

6
ext/json/config.w32
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@ -5,7 +5,11 @@ ARG_ENABLE("json", "JavaScript Object Serialization support", "yes");
if (PHP_JSON != "no") {
EXTENSION('json', 'json.c', PHP_JSON_SHARED, "");
ADD_SOURCES(configure_module_dirname, "JSON_parser.c utf8_decode.c", "json");
PHP_NEW_EXTENSION(json,
json.c \
json_parser.tab.c \
json_scanner.c,
$ext_shared)
PHP_INSTALL_HEADERS("ext/json/", "php_json.h");
}

242
ext/json/json_parser.y Normal file
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@ -0,0 +1,242 @@
%code top {
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jakub Zelenka <bukka@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "php_json.h"
#include "php_json_parser.h"
#define YYDEBUG 0
#if YYDEBUG
int json_yydebug = 1;
#endif
#define PHP_JSON_USE(uv) ((void) (uv))
#define PHP_JSON_USE_1(uvr, uv1) PHP_JSON_USE(uvr); PHP_JSON_USE(uv1)
#define PHP_JSON_USE_2(uvr, uv1, uv2) PHP_JSON_USE(uvr); PHP_JSON_USE(uv1); PHP_JSON_USE(uv2)
}
%pure-parser
%name-prefix "php_json_yy"
%lex-param { php_json_parser *parser }
%parse-param { php_json_parser *parser }
%union {
zval value;
struct {
zval key;
zval val;
} pair;
HashTable *ht;
}
%token <value> PHP_JSON_T_NUL
%token <value> PHP_JSON_T_TRUE
%token <value> PHP_JSON_T_FALSE
%token <value> PHP_JSON_T_INT
%token <value> PHP_JSON_T_DOUBLE
%token <value> PHP_JSON_T_STRING
%token <value> PHP_JSON_T_ESTRING
%token <value> PHP_JSON_T_EOI
%token <value> PHP_JSON_T_ERROR
%type <value> start object key value array errlex
%type <ht> members member elements element
%type <pair> pair
%destructor { zval_dtor(&$$); } <value>
%destructor { zend_hash_destroy($$); FREE_HASHTABLE($$); } <ht>
%destructor { zval_dtor(&$$.key); zval_dtor(&$$.val); } <pair>
%code {
int php_json_yylex(union YYSTYPE *value, php_json_parser *parser);
void php_json_yyerror(php_json_parser *parser, char const *msg);
void php_json_parser_object_to_zval(php_json_parser *parser, zval *zv, HashTable *ht);
void php_json_parser_array_to_zval(zval *zv, HashTable *ht);
void php_json_parser_ht_init(HashTable **ht, uint nSize);
void php_json_parser_ht_update(php_json_parser *parser, HashTable *ht, zval *zkey, zval *zvalue);
void php_json_parser_ht_append(HashTable *ht, zval *zvalue);
#define PHP_JSON_DEPTH_DEC --parser->depth
#define PHP_JSON_DEPTH_INC \
if (parser->max_depth && parser->depth >= parser->max_depth) { \
parser->scanner.errcode = PHP_JSON_ERROR_DEPTH; \
YYERROR; \
} \
++parser->depth
}
%% /* Rules */
start:
value PHP_JSON_T_EOI { $$ = $1; INIT_PZVAL_COPY(parser->return_value, &$1); PHP_JSON_USE($2); YYACCEPT; }
| value errlex { PHP_JSON_USE_2($$, $1, $2); }
;
object:
'{' { PHP_JSON_DEPTH_INC; } members object_end { PHP_JSON_DEPTH_DEC; php_json_parser_object_to_zval(parser, &$$, $3); }
;
object_end:
'}'
| ']' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
;
members:
/* empty */ { php_json_parser_ht_init(&$$, 0); }
| member
;
member:
pair { php_json_parser_ht_init(&$$, 4); php_json_parser_ht_update(parser, $$, &$1.key, &$1.val); }
| member ',' pair { php_json_parser_ht_update(parser, $1, &$3.key, &$3.val); $$ = $1; }
| member errlex { PHP_JSON_USE_2($$, $1, $2); }
;
pair:
key ':' value { $$.key = $1; $$.val = $3; }
| key errlex { PHP_JSON_USE_2($$, $1, $2); }
;
array:
'[' { PHP_JSON_DEPTH_INC; } elements array_end { PHP_JSON_DEPTH_DEC; php_json_parser_array_to_zval(&$$, $3); }
;
array_end:
']'
| '}' { parser->scanner.errcode = PHP_JSON_ERROR_STATE_MISMATCH; YYERROR; }
;
elements:
/* empty */ { php_json_parser_ht_init(&$$, 0); }
| element
;
element:
value { php_json_parser_ht_init(&$$, 4); php_json_parser_ht_append($$, &$1); }
| element ',' value { php_json_parser_ht_append($1, &$3); $$ = $1; }
| element errlex { PHP_JSON_USE_2($$, $1, $2); }
;
key:
PHP_JSON_T_STRING
| PHP_JSON_T_ESTRING
;
value:
object
| array
| PHP_JSON_T_STRING
| PHP_JSON_T_ESTRING
| PHP_JSON_T_INT
| PHP_JSON_T_DOUBLE
| PHP_JSON_T_NUL
| PHP_JSON_T_TRUE
| PHP_JSON_T_FALSE
| errlex
;
errlex:
PHP_JSON_T_ERROR { PHP_JSON_USE_1($$, $1); YYERROR; }
;
%% /* Functions */
void php_json_parser_init(php_json_parser *parser, zval *return_value, char *str, int str_len, long options, long max_depth TSRMLS_DC)
{
memset(parser, 0, sizeof(php_json_parser));
php_json_scanner_init(&parser->scanner, str, str_len, options);
parser->depth = 1;
parser->max_depth = max_depth;
parser->return_value = return_value;
TSRMLS_SET_CTX(parser->zts_ctx);
}
php_json_error_code php_json_parser_error_code(php_json_parser *parser)
{
return parser->scanner.errcode;
}
void php_json_parser_object_to_zval(php_json_parser *parser, zval *zv, HashTable *ht)
{
TSRMLS_FETCH_FROM_CTX(parser->zts_ctx);
if (parser->scanner.options & PHP_JSON_OBJECT_AS_ARRAY) {
php_json_parser_array_to_zval(zv, ht);
} else {
object_and_properties_init(zv, zend_standard_class_def, ht);
}
}
void php_json_parser_array_to_zval(zval *zv, HashTable *ht)
{
Z_TYPE_P(zv) = IS_ARRAY;
Z_ARRVAL_P(zv) = ht;
}
void php_json_parser_ht_init(HashTable **ht, uint nSize)
{
ALLOC_HASHTABLE(*ht);
zend_hash_init(*ht, nSize, NULL, ZVAL_PTR_DTOR, 0);
}
void php_json_parser_ht_update(php_json_parser *parser, HashTable *ht, zval *zkey, zval *zvalue)
{
zval *data;
char *key = Z_STRVAL_P(zkey);
int key_len = Z_STRLEN_P(zkey)+1;
MAKE_STD_ZVAL(data);
ZVAL_ZVAL(data, zvalue, 0, 0);
if (parser->scanner.options & PHP_JSON_OBJECT_AS_ARRAY) {
zend_symtable_update(ht, key, key_len, &data, sizeof(zval *), NULL);
} else {
if (key_len == 1) {
key = "_empty_";
key_len = sizeof("_empty_");
}
zend_hash_update(ht, key, key_len, &data, sizeof(zval *), NULL);
}
zval_dtor(zkey);
}
void php_json_parser_ht_append(HashTable *ht, zval *zvalue)
{
zval *data;
MAKE_STD_ZVAL(data);
ZVAL_ZVAL(data, zvalue, 0, 0);
zend_hash_next_index_insert(ht, &data, sizeof(zval *), NULL);
}
int php_json_yylex(union YYSTYPE *value, php_json_parser *parser)
{
int token = php_json_scan(&parser->scanner);
value->value = parser->scanner.value;
return token;
}
void php_json_yyerror(php_json_parser *parser, char const *msg)
{
if (!parser->scanner.errcode) {
parser->scanner.errcode = PHP_JSON_ERROR_SYNTAX;
}
}

345
ext/json/json_scanner.re Normal file
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@ -0,0 +1,345 @@
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jakub Zelenka <bukka@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "php_json_scanner.h"
#include "php_json_scanner_defs.h"
#include "php_json_parser.h"
#include "json_parser.tab.h"
#define YYCTYPE php_json_ctype
#define YYCURSOR s->cursor
#define YYLIMIT s->limit
#define YYMARKER s->marker
#define YYCTXMARKER s->ctxmarker
#define YYGETCONDITION() s->state
#define YYSETCONDITION(yystate) s->state = yystate
#define YYFILL(n)
#define PHP_JSON_CONDITION_SET(condition) YYSETCONDITION(yyc##condition)
#define PHP_JSON_CONDITION_GOTO(condition) goto yyc_##condition
#define PHP_JSON_SCANNER_COPY_ESC() php_json_scanner_copy_string(s, 0)
#define PHP_JSON_SCANNER_COPY_UTF() php_json_scanner_copy_string(s, 5)
#define PHP_JSON_SCANNER_COPY_UTF_SP() php_json_scanner_copy_string(s, 11)
static void php_json_scanner_copy_string(php_json_scanner *s, int esc_size)
{
size_t len = s->cursor - s->str_start - esc_size - 1;
if (len) {
memcpy(s->pstr, s->str_start, len);
s->pstr += len;
}
}
static int php_json_hex_to_int(char code)
{
if (code >= '0' && code <= '9') {
return code - '0';
} else if (code >= 'A' && code <= 'F') {
return code - ('A' - 10);
} else if (code >= 'a' && code <= 'f') {
return code - ('a' - 10);
} else {
/* this should never happened (just to suppress compiler warning) */
return -1;
}
}
static int php_json_ucs2_to_int_ex(php_json_scanner *s, int size, int start)
{
int i, code = 0;
php_json_ctype *pc = s->cursor - start;
for (i = 0; i < size; i++) {
code |= php_json_hex_to_int(*(pc--)) << (i * 4);
}
return code;
}
static int php_json_ucs2_to_int(php_json_scanner *s, int size)
{
return php_json_ucs2_to_int_ex(s, size, 1);
}
void php_json_scanner_init(php_json_scanner *s, char *str, int str_len, long options)
{
s->cursor = (php_json_ctype *) str;
s->limit = (php_json_ctype *) str + str_len;
s->options = options;
PHP_JSON_CONDITION_SET(JS);
}
int php_json_scan(php_json_scanner *s)
{
ZVAL_NULL(&s->value);
std:
s->token = s->cursor;
/*!re2c
re2c:indent:top = 1;
re2c:yyfill:enable = 0;
DIGIT = [0-9] ;
DIGITNZ = [1-9] ;
UINT = "0" | ( DIGITNZ DIGIT* ) ;
INT = "-"? UINT ;
HEX = DIGIT | [a-fA-F] ;
HEXNZ = DIGITNZ | [a-fA-F] ;
HEX7 = [0-7] ;
HEXC = DIGIT | [a-cA-C] ;
FLOAT = INT "." DIGIT+ ;
EXP = ( INT | FLOAT ) [eE] [+-]? DIGIT+ ;
NL = "\r"? "\n" ;
WS = [ \t\r]+ ;
EOI = "\000";
CTRL = [\x00-\x1F] ;
UTF8T = [\x80-\xBF] ;
UTF8_1 = [\x00-\x7F] ;
UTF8_2 = [\xC2-\xDF] UTF8T ;
UTF8_3A = "\xE0" [\xA0-\xBF] UTF8T ;
UTF8_3B = [\xE1-\xEC] UTF8T{2} ;
UTF8_3C = "\xED" [\x80-\x9F] UTF8T ;
UTF8_3D = [\xEE-\xEF] UTF8T{2} ;
UTF8_3 = UTF8_3A | UTF8_3B | UTF8_3C | UTF8_3D ;
UTF8_4A = "\xF0"[\x90-\xBF] UTF8T{2} ;
UTF8_4B = [\xF1-\xF3] UTF8T{3} ;
UTF8_4C = "\xF4" [\x80-\x8F] UTF8T{2} ;
UTF8_4 = UTF8_4A | UTF8_4B | UTF8_4C ;
UTF8 = UTF8_1 | UTF8_2 | UTF8_3 | UTF8_4 ;
ANY = [^] ;
ESCPREF = "\\" ;
ESCSYM = ( "\"" | "\\" | "/" | [bfnrt] ) ;
ESC = ESCPREF ESCSYM ;
UTFSYM = "u" ;
UTFPREF = ESCPREF UTFSYM ;
UCS2 = UTFPREF HEX{4} ;
UTF16_1 = UTFPREF "00" HEX7 HEX ;
UTF16_2 = UTFPREF "0" HEX7 HEX{2} ;
UTF16_3 = UTFPREF ( ( ( HEXC | [efEF] ) HEX ) | ( [dD] HEX7 ) ) HEX{2} ;
UTF16_4 = UTFPREF [dD] [89abAB] HEX{2} UTFPREF [dD] [c-fC-F] HEX{2} ;
<JS>"{" { return '{'; }
<JS>"}" { return '}'; }
<JS>"[" { return '['; }
<JS>"]" { return ']'; }
<JS>":" { return ':'; }
<JS>"," { return ','; }
<JS>"null" {
ZVAL_NULL(&s->value);
return PHP_JSON_T_NUL;
}
<JS>"true" {
ZVAL_TRUE(&s->value);
return PHP_JSON_T_TRUE;
}
<JS>"false" {
ZVAL_FALSE(&s->value);
return PHP_JSON_T_FALSE;
}
<JS>INT {
zend_bool bigint = 0, negative = s->token[0] == '-';
size_t digits = (size_t) (s->cursor - s->token - negative);
if (digits >= PHP_JSON_INT_MAX_LENGTH) {
if (digits == PHP_JSON_INT_MAX_LENGTH) {
int cmp = strncmp((char *) (s->token + negative), PHP_JSON_INT_MAX_DIGITS, PHP_JSON_INT_MAX_LENGTH);
if (!(cmp < 0 || (cmp == 0 && negative))) {
bigint = 1;
}
} else {
bigint = 1;
}
}
if (!bigint) {
ZVAL_LONG(&s->value, strtol((char *) s->token, NULL, 10));
return PHP_JSON_T_INT;
} else if (s->options & PHP_JSON_BIGINT_AS_STRING) {
ZVAL_STRINGL(&s->value, (char *) s->token, s->cursor - s->token, 1);
return PHP_JSON_T_STRING;
} else {
ZVAL_DOUBLE(&s->value, zend_strtod((char *) s->token, NULL));
return PHP_JSON_T_DOUBLE;
}
}
<JS>FLOAT|EXP {
ZVAL_DOUBLE(&s->value, zend_strtod((char *) s->token, NULL));
return PHP_JSON_T_DOUBLE;
}
<JS>NL|WS { goto std; }
<JS>EOI {
if (s->limit < s->cursor) {
return PHP_JSON_T_EOI;
} else {
s->errcode = PHP_JSON_ERROR_SYNTAX;
return PHP_JSON_T_ERROR;
}
}
<JS>["] {
s->str_start = s->cursor;
s->str_esc = 0;
PHP_JSON_CONDITION_SET(STR_P1);
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>CTRL {
s->errcode = PHP_JSON_ERROR_CTRL_CHAR;
return PHP_JSON_T_ERROR;
}
<STR_P1>UTF16_1 {
s->str_esc += 5;
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>UTF16_2 {
s->str_esc += 4;
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>UTF16_3 {
s->str_esc += 3;
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>UTF16_4 {
s->str_esc += 8;
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>UCS2 {
s->errcode = PHP_JSON_ERROR_UTF16;
return PHP_JSON_T_ERROR;
}
<STR_P1>ESC {
s->str_esc++;
PHP_JSON_CONDITION_GOTO(STR_P1);
}
<STR_P1>ESCPREF {
s->errcode = PHP_JSON_ERROR_SYNTAX;
return PHP_JSON_T_ERROR;
}
<STR_P1>["] {
char *str;
size_t len = s->cursor - s->str_start - s->str_esc - 1;
if (len == 0) {
PHP_JSON_CONDITION_SET(JS);
ZVAL_EMPTY_STRING(&s->value);
return PHP_JSON_T_ESTRING;
}
str = emalloc(len + 1);
str[len] = 0;
ZVAL_STRINGL(&s->value, str, len, 0);
if (s->str_esc) {
s->pstr = (php_json_ctype *) Z_STRVAL(s->value);
s->cursor = s->str_start;
PHP_JSON_CONDITION_SET(STR_P2);
PHP_JSON_CONDITION_GOTO(STR_P2);
} else {
memcpy(Z_STRVAL(s->value), s->str_start, len);
PHP_JSON_CONDITION_SET(JS);
return PHP_JSON_T_STRING;
}
}
<STR_P1>UTF8 { PHP_JSON_CONDITION_GOTO(STR_P1); }
<STR_P1>ANY {
s->errcode = PHP_JSON_ERROR_UTF8;
return PHP_JSON_T_ERROR;
}
<STR_P2>UTF16_1 {
int utf16 = php_json_ucs2_to_int(s, 2);
PHP_JSON_SCANNER_COPY_UTF();
*(s->pstr++) = (char) utf16;
s->str_start = s->cursor;
PHP_JSON_CONDITION_GOTO(STR_P2);
}
<STR_P2>UTF16_2 {
int utf16 = php_json_ucs2_to_int(s, 3);
PHP_JSON_SCANNER_COPY_UTF();
*(s->pstr++) = (char) (0xc0 | (utf16 >> 6));
*(s->pstr++) = (char) (0x80 | (utf16 & 0x3f));
s->str_start = s->cursor;
PHP_JSON_CONDITION_GOTO(STR_P2);
}
<STR_P2>UTF16_3 {
int utf16 = php_json_ucs2_to_int(s, 4);
PHP_JSON_SCANNER_COPY_UTF();
*(s->pstr++) = (char) (0xe0 | (utf16 >> 12));
*(s->pstr++) = (char) (0x80 | ((utf16 >> 6) & 0x3f));
*(s->pstr++) = (char) (0x80 | (utf16 & 0x3f));
s->str_start = s->cursor;
PHP_JSON_CONDITION_GOTO(STR_P2);
}
<STR_P2>UTF16_4 {
int utf32, utf16_hi, utf16_lo;
utf16_hi = php_json_ucs2_to_int(s, 4);
utf16_lo = php_json_ucs2_to_int_ex(s, 4, 7);
utf32 = ((utf16_lo & 0x3FF) << 10) + (utf16_hi & 0x3FF) + 0x10000;
PHP_JSON_SCANNER_COPY_UTF_SP();
*(s->pstr++) = (char) (0xf0 | (utf32 >> 18));
*(s->pstr++) = (char) (0x80 | ((utf32 >> 12) & 0x3f));
*(s->pstr++) = (char) (0x80 | ((utf32 >> 6) & 0x3f));
*(s->pstr++) = (char) (0x80 | (utf32 & 0x3f));
s->str_start = s->cursor;
PHP_JSON_CONDITION_GOTO(STR_P2);
}
<STR_P2>ESCPREF {
char esc;
PHP_JSON_SCANNER_COPY_ESC();
switch (*s->cursor) {
case 'b':
esc = '\b';
break;
case 'f':
esc = '\f';
break;
case 'n':
esc = '\n';
break;
case 'r':
esc = '\r';
break;
case 't':
esc = '\t';
break;
case '\\':
case '/':
case '"':
esc = *s->cursor;
break;
default:
s->errcode = PHP_JSON_ERROR_SYNTAX;
return PHP_JSON_T_ERROR;
}
*(s->pstr++) = esc;
++YYCURSOR;
s->str_start = s->cursor;
PHP_JSON_CONDITION_GOTO(STR_P2);
}
<STR_P2>["] => JS {
PHP_JSON_SCANNER_COPY_ESC();
return PHP_JSON_T_STRING;
}
<STR_P2>ANY { PHP_JSON_CONDITION_GOTO(STR_P2); }
<*>ANY {
s->errcode = PHP_JSON_ERROR_SYNTAX;
return PHP_JSON_T_ERROR;
}
*/
}

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jakub Zelenka <bukka@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef PHP_JSOND_PARSER_H
#define PHP_JSOND_PARSER_H
#include "php.h"
#include "php_json_scanner.h"
typedef struct _php_json_parser {
php_json_scanner scanner;
zval *return_value;
long depth;
long max_depth;
#if ZTS
void *zts_ctx;
#endif
} php_json_parser;
void php_json_parser_init(php_json_parser *parser, zval *return_value, char *str, int str_len, long options, long max_depth TSRMLS_DC);
php_json_error_code php_json_parser_error_code(php_json_parser *parser);
int php_json_yyparse(php_json_parser *parser);
#endif /* PHP_JSOND_PARSER_H */

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jakub Zelenka <bukka@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef PHP_JSOND_SCANNER_H
#define PHP_JSOND_SCANNER_H
#include "php.h"
#include "php_json.h"
typedef unsigned char php_json_ctype;
typedef struct _php_json_scanner {
php_json_ctype *cursor; /* cursor position */
php_json_ctype *token; /* token position */
php_json_ctype *limit; /* the last read character + 1 position */
php_json_ctype *marker; /* marker position for backtracking */
php_json_ctype *ctxmarker; /* marker position for context backtracking */
php_json_ctype *str_start; /* start position of the string */
php_json_ctype *pstr; /* string pointer for escapes conversion */
int str_esc; /* number of extra characters for escaping */
int state; /* condition state */
zval value; /* value */
long options; /* options */
php_json_error_code errcode; /* error type if there is an error */
} php_json_scanner;
void php_json_scanner_init(php_json_scanner *scanner, char *str, int str_len, long options);
int php_json_scan(php_json_scanner *s);
#endif /* PHP_JSOND_SCANNER_H */

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ext/json/utf8_decode.c
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@ -1,179 +0,0 @@
/* utf8_decode.c */
/* 2005-12-25 */
/*
Copyright (c) 2005 JSON.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
The Software shall be used for Good, not Evil.
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
AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "utf8_decode.h"
/*
Very Strict UTF-8 Decoder
UTF-8 is a multibyte character encoding of Unicode. A character can be
represented by 1-4 bytes. The bit pattern of the first byte indicates the
number of continuation bytes.
Most UTF-8 decoders tend to be lenient, attempting to recover as much
information as possible, even from badly encoded input. This UTF-8
decoder is not lenient. It will reject input which does not include
proper continuation bytes. It will reject aliases (or suboptimal
codings). It will reject surrogates. (Surrogate encoding should only be
used with UTF-16.)
Code Contination Minimum Maximum
0xxxxxxx 0 0 127
10xxxxxx error
110xxxxx 1 128 2047
1110xxxx 2 2048 65535 excluding 55296 - 57343
11110xxx 3 65536 1114111
11111xxx error
*/
/*
Get the next byte. It returns UTF8_END if there are no more bytes.
*/
static int
get(json_utf8_decode *utf8)
{
int c;
if (utf8->the_index >= utf8->the_length) {
return UTF8_END;
}
c = utf8->the_input[utf8->the_index] & 0xFF;
utf8->the_index += 1;
return c;
}
/*
Get the 6-bit payload of the next continuation byte.
Return UTF8_ERROR if it is not a contination byte.
*/
static int
cont(json_utf8_decode *utf8)
{
int c = get(utf8);
return ((c & 0xC0) == 0x80) ? (c & 0x3F) : UTF8_ERROR;
}
/*
Initialize the UTF-8 decoder. The decoder is not reentrant,
*/
void
utf8_decode_init(json_utf8_decode *utf8, char p[], int length)
{
utf8->the_index = 0;
utf8->the_input = p;
utf8->the_length = length;
utf8->the_char = 0;
utf8->the_byte = 0;
}
/*
Get the current byte offset. This is generally used in error reporting.
*/
int
utf8_decode_at_byte(json_utf8_decode *utf8)
{
return utf8->the_byte;
}
/*
Get the current character offset. This is generally used in error reporting.
The character offset matches the byte offset if the text is strictly ASCII.
*/
int
utf8_decode_at_character(json_utf8_decode *utf8)
{
return utf8->the_char > 0 ? utf8->the_char - 1 : 0;
}
/*
Extract the next character.
Returns: the character (between 0 and 1114111)
or UTF8_END (the end)
or UTF8_ERROR (error)
*/
int
utf8_decode_next(json_utf8_decode *utf8)
{
int c; /* the first byte of the character */
int r; /* the result */
if (utf8->the_index >= utf8->the_length) {
return utf8->the_index == utf8->the_length ? UTF8_END : UTF8_ERROR;
}
utf8->the_byte = utf8->the_index;
utf8->the_char += 1;
c = get(utf8);
/*
Zero continuation (0 to 127)
*/
if ((c & 0x80) == 0) {
return c;
}
/*
One contination (128 to 2047)
*/
if ((c & 0xE0) == 0xC0) {
int c1 = cont(utf8);
if (c1 < 0) {
return UTF8_ERROR;
}
r = ((c & 0x1F) << 6) | c1;
return r >= 128 ? r : UTF8_ERROR;
}
/*
Two continuation (2048 to 55295 and 57344 to 65535)
*/
if ((c & 0xF0) == 0xE0) {
int c1 = cont(utf8);
int c2 = cont(utf8);
if (c1 < 0 || c2 < 0) {
return UTF8_ERROR;
}
r = ((c & 0x0F) << 12) | (c1 << 6) | c2;
return r >= 2048 && (r < 55296 || r > 57343) ? r : UTF8_ERROR;
}
/*
Three continuation (65536 to 1114111)
*/
if ((c & 0xF8) == 0xF0) {
int c1 = cont(utf8);
int c2 = cont(utf8);
int c3 = cont(utf8);
if (c1 < 0 || c2 < 0 || c3 < 0) {
return UTF8_ERROR;
}
r = ((c & 0x0F) << 18) | (c1 << 12) | (c2 << 6) | c3;
return r >= 65536 && r <= 1114111 ? r : UTF8_ERROR;
}
return UTF8_ERROR;
}

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/* utf8_decode.h */
#define UTF8_END -1
#define UTF8_ERROR -2
typedef struct json_utf8_decode
{
char *the_input;
int the_index;
int the_length;
int the_char;
int the_byte;
} json_utf8_decode;
extern int utf8_decode_at_byte(json_utf8_decode *utf8);
extern int utf8_decode_at_character(json_utf8_decode *utf8);
extern void utf8_decode_init(json_utf8_decode *utf8, char p[], int length);
extern int utf8_decode_next(json_utf8_decode *utf8);