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json.c
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/*
* json-c-0.9
*
* Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd.
* Michael Clark <[email protected]>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See COPYING for details.
*/
#define MY_DEBUGGING 0
#include "json.h"
#include <stdarg.h>
#include <limits.h>
#include <ctype.h>
#include <errno.h>
#include <time.h>
/* Define to 1 if you have the `strndup' function. */
#define HAVE_STRNDUP 1
/* Define to 1 if you have the `vasprintf' function. */
#define HAVE_VASPRINTF 1
/* Define to 1 if you have the `vsnprintf' function. */
#define HAVE_VSNPRINTF 1
/*
* $Id: json_object_private.h,v 1.4 2006/01/26 02:16:28 mclark Exp $
*/
typedef void (json_object_delete_fn)(struct json_object *o);
typedef int (json_object_to_string_fn)(struct json_object *o,
struct printbuf *pb);
struct json_object
{
enum json_type o_type;
json_object_delete_fn *_delete;
json_object_to_string_fn *_to_string;
int _ref_count;
struct printbuf *_pb;
union data {
boolean c_boolean;
double c_double;
int c_int;
struct lh_table *c_object;
struct array_list *c_array;
char *c_string;
} o;
};
/* CAW: added for ANSI C iteration correctness */
struct json_object_iter
{
char *key;
struct json_object *val;
struct lh_entry *entry;
};
/*
* $Id: arraylist.c,v 1.4 2006/01/26 02:16:28 mclark Exp $
*/
struct array_list* array_list_new(array_list_free_fn *free_fn)
{
struct array_list *arr;
arr = (struct array_list*)calloc(1, sizeof(struct array_list));
if(!arr) return NULL;
arr->size = ARRAY_LIST_DEFAULT_SIZE;
arr->length = 0;
arr->free_fn = free_fn;
if(!(arr->array = (void**)calloc(sizeof(void*), arr->size))) {
free(arr);
return NULL;
}
return arr;
}
void array_list_free(struct array_list *arr)
{
int i;
for(i = 0; i < arr->length; i++)
if(arr->array[i]) arr->free_fn(arr->array[i]);
free(arr->array);
free(arr);
}
void* array_list_get_idx(struct array_list *arr, int i)
{
if(i >= arr->length) return NULL;
return arr->array[i];
}
static int array_list_expand_internal(struct array_list *arr, int max)
{
void *t;
int new_size;
if(max < arr->size) return 0;
new_size = json_max(arr->size << 1, max);
if(!(t = realloc(arr->array, new_size*sizeof(void*)))) return -1;
arr->array = (void**)t;
(void)memset(arr->array + arr->size, 0, (new_size-arr->size)*sizeof(void*));
arr->size = new_size;
return 0;
}
int array_list_put_idx(struct array_list *arr, int idx, void *data)
{
if(array_list_expand_internal(arr, idx)) return -1;
if(arr->array[idx]) arr->free_fn(arr->array[idx]);
arr->array[idx] = data;
if(arr->length <= idx) arr->length = idx + 1;
return 0;
}
int array_list_add(struct array_list *arr, void *data)
{
return array_list_put_idx(arr, arr->length, data);
}
int array_list_length(struct array_list *arr)
{
return arr->length;
}
/*
* $Id: json_object.c,v 1.17 2006/07/25 03:24:50 mclark Exp $
*/
#if !HAVE_STRNDUP
/* CAW: compliant version of strndup() */
char* strndup(const char* str, size_t n)
{
if(str) {
size_t len = strlen(str);
size_t nn = json_min(len,n);
char* s = (char*)malloc(sizeof(char) * (nn + 1));
if(s) {
memcpy(s, str, nn);
s[nn] = '\0';
}
return s;
}
return NULL;
}
#endif
const char *json_number_chars = "0123456789.+-eE";
const char *json_hex_chars = "0123456789abcdef";
static void json_object_generic_delete(struct json_object* jso);
static struct json_object* json_object_new(enum json_type o_type);
/* ref count debugging */
#define REFCOUNT_DEBUG 1
#ifdef REFCOUNT_DEBUG
static const char* json_type_name[] = {
"null",
"boolean",
"double",
"int",
"object",
"array",
"string",
};
static struct lh_table *json_object_table = NULL;
static void json_object_init(void) __attribute__ ((constructor));
static void json_object_init(void) {
MY_DEBUG("json_object_init: creating object table\n");
json_object_table = lh_kptr_table_new(128, "json_object_table", NULL);
}
static void json_object_fini(void) __attribute__ ((destructor));
static void json_object_fini(void) {
struct lh_entry *ent;
if (json_object_table->count) {
MY_DEBUG("json_object_fini: %d referenced objects at exit\n",
json_object_table->count);
lh_foreach(json_object_table, ent) {
struct json_object* obj = (struct json_object*)ent->v;
MY_DEBUG("\t%s:%p\n", json_type_name[obj->o_type], obj);
}
}
MY_DEBUG("json_object_fini: freeing object table\n");
lh_table_free(json_object_table);
}
#endif /* REFCOUNT_DEBUG */
/* string escaping */
static int json_escape_str(struct printbuf *pb, char *str)
{
int pos = 0, start_offset = 0;
unsigned char c;
if (!str) // wkliang:20110522
return -1;
do {
c = str[pos];
switch(c) {
case '\0':
break;
case '\b':
case '\n':
case '\r':
case '\t':
case '"':
case '\\':
case '/':
if(pos - start_offset > 0)
printbuf_memappend(pb, str + start_offset, pos - start_offset);
if(c == '\b') printbuf_memappend(pb, "\\b", 2);
else if(c == '\n') printbuf_memappend(pb, "\\n", 2);
else if(c == '\r') printbuf_memappend(pb, "\\r", 2);
else if(c == '\t') printbuf_memappend(pb, "\\t", 2);
else if(c == '"') printbuf_memappend(pb, "\\\"", 2);
else if(c == '\\') printbuf_memappend(pb, "\\\\", 2);
else if(c == '/') printbuf_memappend(pb, "\\/", 2);
start_offset = ++pos;
break;
default:
if(c < ' ') {
if(pos - start_offset > 0)
printbuf_memappend(pb, str + start_offset, pos - start_offset);
sprintbuf(pb, "\\u00%c%c",
json_hex_chars[c >> 4],
json_hex_chars[c & 0xf]);
start_offset = ++pos;
} else pos++;
}
} while(c);
if(pos - start_offset > 0)
printbuf_memappend(pb, str + start_offset, pos - start_offset);
return 0;
}
/* reference counting */
json_object* jsobj_IncrRef(json_object *jso)
{
if (jso) {
jso->_ref_count++;
}
return jso;
}
void jsobj_DecrRef(json_object *jso)
{
if (jso) {
jso->_ref_count--;
if(!jso->_ref_count) jso->_delete(jso);
}
}
/* generic object construction and destruction parts */
static void json_object_generic_delete(struct json_object* jso)
{
#ifdef REFCOUNT_DEBUG
MY_DEBUG("json_object_delete_%s: %p %p\n",
json_type_name[jso->o_type], json_object_table, jso);
lh_table_delete(json_object_table, jso);
#endif /* REFCOUNT_DEBUG */
printbuf_free(jso->_pb);
free(jso);
}
static struct json_object* json_object_new(enum json_type o_type)
{
struct json_object *jso = (struct json_object*)calloc(sizeof(struct json_object), 1);
if(!jso) return NULL;
jso->o_type = o_type;
jso->_ref_count = 1;
jso->_delete = &json_object_generic_delete;
#ifdef REFCOUNT_DEBUG
lh_table_insert(json_object_table, jso, jso);
MY_DEBUG("json_object_new_%s: %p %p\n",
json_type_name[jso->o_type], json_object_table, jso);
#endif /* REFCOUNT_DEBUG */
return jso;
}
/* type checking functions */
int json_object_is_type(struct json_object *jso, enum json_type type)
{
return (jso->o_type == type);
}
enum json_type json_object_get_type(struct json_object *jso)
{
return jso->o_type;
}
/* json_object_to_string */
const char* json_object_to_string(struct json_object *jso)
{
if (!jso) return "null";
if (!jso->_pb) {
if (!(jso->_pb = printbuf_new())) return NULL;
} else {
printbuf_reset(jso->_pb);
}
if (jso->_to_string(jso, jso->_pb) < 0) return NULL;
return jso->_pb->buf;
}
/* json_object_object */
static int json_object_object_to_string(struct json_object* jso,
struct printbuf *pb)
{
int i=0;
struct json_object_iter iter;
sprintbuf(pb, "{");
/* CAW: scope operator to make ANSI correctness */
/* CAW: switched to json_object_object_foreachC which uses an iterator struct */
json_object_object_foreachC(jso, iter) {
if(i) sprintbuf(pb, ",");
sprintbuf(pb, " \"");
json_escape_str(pb, iter.key);
sprintbuf(pb, "\":");
if (iter.val == NULL)
sprintbuf(pb, "null");
else
iter.val->_to_string(iter.val, pb);
i++;
}
return sprintbuf(pb, "}");
}
static void json_object_lh_entry_free(struct lh_entry *ent)
{
free(ent->k);
jsobj_DecrRef((struct json_object*)ent->v);
}
static void json_object_object_delete(struct json_object* jso)
{
lh_table_free(jso->o.c_object);
json_object_generic_delete(jso);
}
struct json_object* json_object_new_object(void)
{
struct json_object *jso = json_object_new(json_type_object);
if(!jso) return NULL;
jso->_delete = &json_object_object_delete;
jso->_to_string = &json_object_object_to_string;
jso->o.c_object = lh_kchar_table_new(JSON_OBJECT_DEF_HASH_ENTRIES,
NULL, &json_object_lh_entry_free);
return jso;
}
struct lh_table* json_object_get_object(struct json_object *jso)
{
if(!jso) return NULL;
switch(jso->o_type) {
case json_type_object:
return jso->o.c_object;
default:
return NULL;
}
}
void json_object_object_add(struct json_object* jso, const char *key,
struct json_object *val)
{
lh_table_delete(jso->o.c_object, key);
lh_table_insert(jso->o.c_object, strdup(key), val);
}
struct json_object* json_object_object_get(struct json_object* jso, const char *key)
{
return (struct json_object*) lh_table_lookup(jso->o.c_object, key);
}
void json_object_object_del(struct json_object* jso, const char *key)
{
lh_table_delete(jso->o.c_object, key);
}
/* json_object_boolean */
static int json_object_boolean_to_string(struct json_object* jso,
struct printbuf *pb)
{
if(jso->o.c_boolean)
return sprintbuf(pb, "true");
else
return sprintbuf(pb, "false");
}
struct json_object* json_object_new_boolean(boolean b)
{
struct json_object *jso = json_object_new(json_type_boolean);
if(!jso) return NULL;
jso->_to_string = &json_object_boolean_to_string;
jso->o.c_boolean = b;
return jso;
}
boolean json_object_get_boolean(struct json_object *jso)
{
if(!jso) return FALSE;
switch(jso->o_type) {
case json_type_boolean:
return jso->o.c_boolean;
case json_type_int:
return (jso->o.c_int != 0);
case json_type_double:
return (jso->o.c_double != 0);
case json_type_string:
return (strlen(jso->o.c_string) != 0);
default:
return FALSE;
}
}
/* json_object_int */
static int json_object_int_to_string(struct json_object* jso, struct printbuf *pb)
{
return sprintbuf(pb, "%d", jso->o.c_int);
}
struct json_object* json_object_new_int(int i)
{
struct json_object *jso = json_object_new(json_type_int);
if(!jso) return NULL;
jso->_to_string = &json_object_int_to_string;
jso->o.c_int = i;
return jso;
}
int json_object_get_int(struct json_object *jso)
{
int cint;
if(!jso) return 0;
switch(jso->o_type) {
case json_type_int: return jso->o.c_int;
case json_type_double: return (int)jso->o.c_double;
case json_type_boolean: return jso->o.c_boolean;
case json_type_string:
if(sscanf(jso->o.c_string, "%d", &cint) == 1)
return cint;
default:
return 0;
}
}
/* json_object_double */
static int json_object_double_to_string(struct json_object* jso,
struct printbuf *pb)
{
return sprintbuf(pb, "%lf", jso->o.c_double);
}
struct json_object* json_object_new_double(double d)
{
struct json_object *jso = json_object_new(json_type_double);
if(!jso) return NULL;
jso->_to_string = &json_object_double_to_string;
jso->o.c_double = d;
return jso;
}
double json_object_get_double(struct json_object *jso)
{
double cdouble;
if(!jso) return 0.0;
switch(jso->o_type) {
case json_type_double:
return jso->o.c_double;
case json_type_int:
return jso->o.c_int;
case json_type_boolean:
return jso->o.c_boolean;
case json_type_string:
if(sscanf(jso->o.c_string, "%lf", &cdouble) == 1) return cdouble;
default:
return 0.0;
}
}
/* json_object_string */
static int json_object_string_to_string(struct json_object* jso, struct printbuf *pb)
{
sprintbuf(pb, "\"");
// if (jso->o.c_string) // wkliang:20110522
json_escape_str(pb, jso->o.c_string);
sprintbuf(pb, "\"");
return 0;
}
static void json_object_string_delete(struct json_object* jso)
{
free(jso->o.c_string);
json_object_generic_delete(jso);
}
struct json_object* json_object_new_string(const char *s)
{
struct json_object *jso = json_object_new(json_type_string);
if(!jso) return NULL;
jso->_delete = &json_object_string_delete;
jso->_to_string = &json_object_string_to_string;
if (s) // wkliang:20110522
jso->o.c_string = strdup(s);
return jso;
}
struct json_object* json_object_new_string_len(const char *s, int len)
{
struct json_object *jso = json_object_new(json_type_string);
if(!jso) return NULL;
jso->_delete = &json_object_string_delete;
jso->_to_string = &json_object_string_to_string;
jso->o.c_string = strndup(s, len);
return jso;
}
const char* json_object_get_string(struct json_object *jso)
{
if(!jso) return NULL;
switch(jso->o_type) {
case json_type_string:
return jso->o.c_string;
default:
return json_object_to_string(jso);
}
}
/* json_object_array */
static int json_object_array_to_string(struct json_object* jso,
struct printbuf *pb)
{
int i;
sprintbuf(pb, "[");
for(i=0; i < json_object_array_length(jso); i++) {
struct json_object *val;
if(i) { sprintbuf(pb, ", "); }
else { sprintbuf(pb, " "); }
val = json_object_array_get_idx(jso, i);
if(val == NULL) { sprintbuf(pb, "null"); }
else { val->_to_string(val, pb); }
}
return sprintbuf(pb, " ]");
}
static void json_object_array_entry_free(void *data)
{
jsobj_DecrRef((struct json_object*)data);
}
static void json_object_array_delete(struct json_object* jso)
{
array_list_free(jso->o.c_array);
json_object_generic_delete(jso);
}
struct json_object* json_object_new_array(void)
{
struct json_object *jso = json_object_new(json_type_array);
if(!jso) return NULL;
jso->_delete = &json_object_array_delete;
jso->_to_string = &json_object_array_to_string;
jso->o.c_array = array_list_new(&json_object_array_entry_free);
return jso;
}
struct array_list* json_object_get_array(struct json_object *jso)
{
if(!jso) return NULL;
switch(jso->o_type) {
case json_type_array:
return jso->o.c_array;
default:
return NULL;
}
}
int json_object_array_length(struct json_object *jso)
{
return array_list_length(jso->o.c_array);
}
int json_object_array_add(struct json_object *jso,struct json_object *val)
{
return array_list_add(jso->o.c_array, val);
}
int json_object_array_put_idx(struct json_object *jso, int idx,
struct json_object *val)
{
return array_list_put_idx(jso->o.c_array, idx, val);
}
struct json_object* json_object_array_get_idx(struct json_object *jso,
int idx)
{
return (struct json_object*)array_list_get_idx(jso->o.c_array, idx);
}
/*
* wkliang:20110522
*/
void jsobj_dump( json_object* obj, const char* name, int tab )
{
int i;
char buf[64];
if( obj ) {
switch( json_object_get_type(obj) ) {
case json_type_array :
MY_DEBUG( "%*s%s:\n", tab, " ", name );
for( i = 0; i < json_object_array_length(obj); i++ ) {
sprintf( buf, "%s[%d]", name, i );
jsobj_dump( json_object_array_get_idx(obj, i), buf, tab + 4 );
}
return;
case json_type_object :
MY_DEBUG( "%*s%s:\n", tab, " ", name );
{
json_object_object_foreach(obj, key, val) {
jsobj_dump( val, key, tab + 4 );
}
}
return;
default :
break;
}
}
MY_DEBUG( "%*s%s: %s.\n", tab, " ", name, obj?json_object_to_string(obj):"nil");
return;
}
const char* jsobj_get_string(json_object *jso, const char* key, const char* val)
{
// check jso is an json_object_object
json_object* vjso = (json_object*)lh_table_lookup(jso->o.c_object, key);
if (vjso == NULL)
return val;
return json_object_get_string(vjso);
}
void jsobj_url_decode(json_object* jso, const char* cp)
{
// check jso is an json_object_object
const char *ep, *vs, *ve;
char *key, *val;
size_t klen, vlen;
struct json_object *vjso;
/* buf is "key1=val1&key2=val2...". Find key first */
while (cp != NULL && *cp != '0') {
if (!isalnum(*cp)) {
cp++; // skip leading non alpha numeric char
continue;
}
if ((ep = strchr(cp, '=')) == NULL)
break; // not found
if ((klen = ep - cp) == 0)
break; // empty key
vs = ep + 1; // value start
for (ve = vs; *ve && *ve != '&'; ve++)
;
vlen = ve - vs;
key = calloc(1, klen+1);
val = calloc(1, vlen+1);
vjso = json_object_new(json_type_string);
if (!key || !val || !vjso) {
MY_DEBUG("%s: malloc error!\n", __func__);
break;
}
// struct json_object* json_object_new_string(const char *s)
vjso->_delete = &json_object_string_delete;
vjso->_to_string = &json_object_string_to_string;
vjso->o.c_string = val;
memcpy(key, cp, klen);
key[klen] = '\0';
// int _shttpd_url_decode(const char *src, int src_len, char *dst, int dst_len)
{
#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')
const char *src = vs;
char *dst = val;
int src_len = vlen, dst_len = vlen+1, i, j, a, b;
for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++)
switch (src[i]) {
case '+': // wkliang:20110604 missing +
dst[j] = ' ';
break;
case '%':
if (isxdigit(((unsigned char *) src)[i + 1]) &&
isxdigit(((unsigned char *) src)[i + 2])) {
a = tolower(((unsigned char *)src)[i + 1]);
b = tolower(((unsigned char *)src)[i + 2]);
dst[j] = (HEXTOI(a) << 4) | HEXTOI(b);
i += 2;
} else {
dst[j] = '%';
}
break;
default:
dst[j] = src[i];
break;
}
dst[j] = '\0'; /* Null-terminate the destination */
}
MY_DEBUG("key=%s, val=%s.\n", key, val);
// json_object_object_add()
lh_table_delete(jso->o.c_object, key);
lh_table_insert(jso->o.c_object, key, vjso);
cp = ve;
}
return ;
}
/*
* $Id: json_tokener.c,v 1.20 2006/07/25 03:24:50 mclark Exp $
*/
static const char* json_null_str = "null";
static const char* json_true_str = "true";
static const char* json_false_str = "false";
const char* json_tokener_errors[] = {
"success",
"continue",
"nesting to deep",
"unexpected end of data",
"unexpected character",
"null expected",
"boolean expected",
"number expected",
"array value separator ',' expected",
"quoted object property name expected",
"object property name separator ':' expected",
"object value separator ',' expected",
"invalid string sequence",
"expected comment",
};
struct json_tokener* json_tokener_new(void)
{
struct json_tokener *tok;
tok = (struct json_tokener*)calloc(1, sizeof(struct json_tokener));
if (!tok) return NULL;
tok->pb = printbuf_new();
json_tokener_reset(tok);
return tok;
}
void json_tokener_free(struct json_tokener *tok)
{
json_tokener_reset(tok);
if(tok) printbuf_free(tok->pb);
free(tok);
}
static void json_tokener_reset_level(struct json_tokener *tok, int depth)
{
tok->stack[depth].state = json_tokener_state_eatws;
tok->stack[depth].saved_state = json_tokener_state_start;
jsobj_DecrRef(tok->stack[depth].current);
tok->stack[depth].current = NULL;
free(tok->stack[depth].obj_field_name);
tok->stack[depth].obj_field_name = NULL;
}
void json_tokener_reset(struct json_tokener *tok)
{
int i;
if (!tok)
return;
for(i = tok->depth; i >= 0; i--)
json_tokener_reset_level(tok, i);
tok->depth = 0;
tok->err = json_tokener_success;
}
struct json_object* json_tokener_parse(const char *str)
{
struct json_tokener* tok;
struct json_object* obj;
tok = json_tokener_new();
obj = json_tokener_parse_ex(tok, str, -1);
if(tok->err != json_tokener_success)
obj = (struct json_object*)error_ptr(-tok->err);
json_tokener_free(tok);
return obj;
}
#define state tok->stack[tok->depth].state
#define saved_state tok->stack[tok->depth].saved_state
#define current tok->stack[tok->depth].current
#define obj_field_name tok->stack[tok->depth].obj_field_name
/* Optimization:
* json_tokener_parse_ex() consumed a lot of CPU in its main loop,
* iterating character-by character. A large performance boost is
* achieved by using tighter loops to locally handle units such as
* comments and strings. Loops that handle an entire token within
* their scope also gather entire strings and pass them to
* printbuf_memappend() in a single call, rather than calling
* printbuf_memappend() one char at a time.
*
* POP_CHAR() and ADVANCE_CHAR() macros are used for code that is
* common to both the main loop and the tighter loops.
*/
/* POP_CHAR(dest, tok) macro:
* Not really a pop()...peeks at the current char and stores it in dest.
* Returns 1 on success, sets tok->err and returns 0 if no more chars.
* Implicit inputs: str, len vars
*/
#define POP_CHAR(dest, tok) \
(((tok)->char_offset == len) ? \
(((tok)->depth == 0 && state == json_tokener_state_eatws && saved_state == json_tokener_state_finish) ? \
(((tok)->err = json_tokener_success), 0) \
: \
(((tok)->err = json_tokener_continue), 0) \
) : \
(((dest) = *str), 1) \
)
/* ADVANCE_CHAR() macro:
* Incrementes str & tok->char_offset.
* For convenience of existing conditionals, returns the old value of c (0 on eof)
* Implicit inputs: c var
*/
#define ADVANCE_CHAR(str, tok) \
( ++(str), ((tok)->char_offset)++, c)
/* End optimization macro defs */
struct json_object* json_tokener_parse_ex(struct json_tokener *tok,
const char *str, int len)
{
struct json_object *obj = NULL;
char c = '\1';
tok->char_offset = 0;
tok->err = json_tokener_success;
while (POP_CHAR(c, tok)) {
redo_char:
switch(state) {
case json_tokener_state_eatws:
/* Advance until we change state */
while (isspace(c)) {
if ((!ADVANCE_CHAR(str, tok)) || (!POP_CHAR(c, tok)))
goto out;
}
if(c == '/') {
printbuf_reset(tok->pb);
printbuf_memappend_fast(tok->pb, &c, 1);
state = json_tokener_state_comment_start;
} else {
state = saved_state;
goto redo_char;
}
break;
case json_tokener_state_start:
switch(c) {
case '{':
state = json_tokener_state_eatws;
saved_state = json_tokener_state_object_field_start;
current = json_object_new_object();
break;
case '[':
state = json_tokener_state_eatws;
saved_state = json_tokener_state_array;
current = json_object_new_array();
break;
case 'N':
case 'n':
state = json_tokener_state_null;
printbuf_reset(tok->pb);
tok->st_pos = 0;
goto redo_char;
case '"':
case '\'':
state = json_tokener_state_string;
printbuf_reset(tok->pb);
tok->quote_char = c;
break;
case 'T':
case 't':
case 'F':
case 'f':
state = json_tokener_state_boolean;
printbuf_reset(tok->pb);
tok->st_pos = 0;
goto redo_char;
case '0' ... '9': /* #if defined(__GNUC__) */
case '-':
state = json_tokener_state_number;
printbuf_reset(tok->pb);
tok->is_double = 0;
goto redo_char;
default:
tok->err = json_tokener_error_parse_unexpected;
goto out;
}
break;
case json_tokener_state_finish:
if(tok->depth == 0) goto out;
obj = jsobj_IncrRef(current);
json_tokener_reset_level(tok, tok->depth);
tok->depth--;
goto redo_char;
case json_tokener_state_null:
printbuf_memappend_fast(tok->pb, &c, 1);
if(strncasecmp(json_null_str, tok->pb->buf,
json_min(tok->st_pos+1, strlen(json_null_str))) == 0) {
if(tok->st_pos == strlen(json_null_str)) {
current = NULL;
saved_state = json_tokener_state_finish;
state = json_tokener_state_eatws;
goto redo_char;
}
} else {
tok->err = json_tokener_error_parse_null;
goto out;
}
tok->st_pos++;
break;
case json_tokener_state_comment_start:
if(c == '*') {
state = json_tokener_state_comment;
} else if(c == '/') {
state = json_tokener_state_comment_eol;
} else {
tok->err = json_tokener_error_parse_comment;
goto out;
}
printbuf_memappend_fast(tok->pb, &c, 1);
break;
case json_tokener_state_comment:
{
/* Advance until we change state */
const char *case_start = str;
while(c != '*') {
if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
printbuf_memappend_fast(tok->pb, case_start, str-case_start);
goto out;
}
}
printbuf_memappend_fast(tok->pb, case_start, 1+str-case_start);
state = json_tokener_state_comment_end;
}
break;
case json_tokener_state_comment_eol:
{
/* Advance until we change state */
const char *case_start = str;
while(c != '\n') {
if (!ADVANCE_CHAR(str, tok) || !POP_CHAR(c, tok)) {
printbuf_memappend_fast(tok->pb, case_start, str-case_start);
goto out;
}
}
printbuf_memappend_fast(tok->pb, case_start, str-case_start);
MY_DEBUG("json_tokener_comment: %s\n", tok->pb->buf);