/
json.c
1092 lines (1018 loc) · 23.9 KB
/
json.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* json.c: Encoding and decoding JSON.
*
* Follows this standard: https://tools.ietf.org/html/rfc7159.html
*/
#define USING_FLOAT_STUFF
#include "vim.h"
#if defined(FEAT_EVAL) || defined(PROTO)
static int json_encode_item(garray_T *gap, typval_T *val, int copyID, int options);
static int json_decode_item(js_read_T *reader, typval_T *res, int options);
/*
* Encode "val" into a JSON format string.
* The result is added to "gap"
* Returns FAIL on failure and makes gap->ga_data empty.
*/
static int
json_encode_gap(garray_T *gap, typval_T *val, int options)
{
if (json_encode_item(gap, val, get_copyID(), options) == FAIL)
{
ga_clear(gap);
gap->ga_data = vim_strsave((char_u *)"");
return FAIL;
}
return OK;
}
/*
* Encode "val" into a JSON format string.
* The result is in allocated memory.
* The result is empty when encoding fails.
* "options" can contain JSON_JS, JSON_NO_NONE and JSON_NL.
*/
char_u *
json_encode(typval_T *val, int options)
{
garray_T ga;
/* Store bytes in the growarray. */
ga_init2(&ga, 1, 4000);
json_encode_gap(&ga, val, options);
return ga.ga_data;
}
/*
* Encode ["nr", "val"] into a JSON format string in allocated memory.
* "options" can contain JSON_JS, JSON_NO_NONE and JSON_NL.
* Returns NULL when out of memory.
*/
char_u *
json_encode_nr_expr(int nr, typval_T *val, int options)
{
typval_T listtv;
typval_T nrtv;
garray_T ga;
nrtv.v_type = VAR_NUMBER;
nrtv.vval.v_number = nr;
if (rettv_list_alloc(&listtv) == FAIL)
return NULL;
if (list_append_tv(listtv.vval.v_list, &nrtv) == FAIL
|| list_append_tv(listtv.vval.v_list, val) == FAIL)
{
list_unref(listtv.vval.v_list);
return NULL;
}
ga_init2(&ga, 1, 4000);
if (json_encode_gap(&ga, &listtv, options) == OK && (options & JSON_NL))
ga_append(&ga, '\n');
list_unref(listtv.vval.v_list);
return ga.ga_data;
}
static void
write_string(garray_T *gap, char_u *str)
{
char_u *res = str;
char_u numbuf[NUMBUFLEN];
if (res == NULL)
ga_concat(gap, (char_u *)"\"\"");
else
{
#if defined(FEAT_MBYTE) && defined(USE_ICONV)
vimconv_T conv;
char_u *converted = NULL;
if (!enc_utf8)
{
/* Convert the text from 'encoding' to utf-8, the JSON string is
* always utf-8. */
conv.vc_type = CONV_NONE;
convert_setup(&conv, p_enc, (char_u*)"utf-8");
if (conv.vc_type != CONV_NONE)
converted = res = string_convert(&conv, res, NULL);
convert_setup(&conv, NULL, NULL);
}
#endif
ga_append(gap, '"');
while (*res != NUL)
{
int c;
#ifdef FEAT_MBYTE
/* always use utf-8 encoding, ignore 'encoding' */
c = utf_ptr2char(res);
#else
c = *res;
#endif
switch (c)
{
case 0x08:
ga_append(gap, '\\'); ga_append(gap, 'b'); break;
case 0x09:
ga_append(gap, '\\'); ga_append(gap, 't'); break;
case 0x0a:
ga_append(gap, '\\'); ga_append(gap, 'n'); break;
case 0x0c:
ga_append(gap, '\\'); ga_append(gap, 'f'); break;
case 0x0d:
ga_append(gap, '\\'); ga_append(gap, 'r'); break;
case 0x22: /* " */
case 0x5c: /* \ */
ga_append(gap, '\\');
ga_append(gap, c);
break;
default:
if (c >= 0x20)
{
#ifdef FEAT_MBYTE
numbuf[utf_char2bytes(c, numbuf)] = NUL;
#else
numbuf[0] = c;
numbuf[1] = NUL;
#endif
ga_concat(gap, numbuf);
}
else
{
vim_snprintf((char *)numbuf, NUMBUFLEN,
"\\u%04lx", (long)c);
ga_concat(gap, numbuf);
}
}
#ifdef FEAT_MBYTE
res += utf_ptr2len(res);
#else
++res;
#endif
}
ga_append(gap, '"');
#if defined(FEAT_MBYTE) && defined(USE_ICONV)
vim_free(converted);
#endif
}
}
/*
* Return TRUE if "key" can be used without quotes.
* That is when it starts with a letter and only contains letters, digits and
* underscore.
*/
static int
is_simple_key(char_u *key)
{
char_u *p;
if (!ASCII_ISALPHA(*key))
return FALSE;
for (p = key + 1; *p != NUL; ++p)
if (!ASCII_ISALPHA(*p) && *p != '_' && !vim_isdigit(*p))
return FALSE;
return TRUE;
}
/*
* Encode "val" into "gap".
* Return FAIL or OK.
*/
static int
json_encode_item(garray_T *gap, typval_T *val, int copyID, int options)
{
char_u numbuf[NUMBUFLEN];
char_u *res;
list_T *l;
dict_T *d;
switch (val->v_type)
{
case VAR_SPECIAL:
switch (val->vval.v_number)
{
case VVAL_FALSE: ga_concat(gap, (char_u *)"false"); break;
case VVAL_TRUE: ga_concat(gap, (char_u *)"true"); break;
case VVAL_NONE: if ((options & JSON_JS) != 0
&& (options & JSON_NO_NONE) == 0)
/* empty item */
break;
/* FALLTHROUGH */
case VVAL_NULL: ga_concat(gap, (char_u *)"null"); break;
}
break;
case VAR_NUMBER:
vim_snprintf((char *)numbuf, NUMBUFLEN, "%lld",
val->vval.v_number);
ga_concat(gap, numbuf);
break;
case VAR_STRING:
res = val->vval.v_string;
write_string(gap, res);
break;
case VAR_FUNC:
case VAR_PARTIAL:
case VAR_JOB:
case VAR_CHANNEL:
/* no JSON equivalent TODO: better error */
EMSG(_(e_invarg));
return FAIL;
case VAR_LIST:
l = val->vval.v_list;
if (l == NULL)
ga_concat(gap, (char_u *)"[]");
else
{
if (l->lv_copyID == copyID)
ga_concat(gap, (char_u *)"[]");
else
{
listitem_T *li;
l->lv_copyID = copyID;
ga_append(gap, '[');
for (li = l->lv_first; li != NULL && !got_int; )
{
if (json_encode_item(gap, &li->li_tv, copyID,
options & JSON_JS) == FAIL)
return FAIL;
if ((options & JSON_JS)
&& li->li_next == NULL
&& li->li_tv.v_type == VAR_SPECIAL
&& li->li_tv.vval.v_number == VVAL_NONE)
/* add an extra comma if the last item is v:none */
ga_append(gap, ',');
li = li->li_next;
if (li != NULL)
ga_append(gap, ',');
}
ga_append(gap, ']');
l->lv_copyID = 0;
}
}
break;
case VAR_DICT:
d = val->vval.v_dict;
if (d == NULL)
ga_concat(gap, (char_u *)"{}");
else
{
if (d->dv_copyID == copyID)
ga_concat(gap, (char_u *)"{}");
else
{
int first = TRUE;
int todo = (int)d->dv_hashtab.ht_used;
hashitem_T *hi;
d->dv_copyID = copyID;
ga_append(gap, '{');
for (hi = d->dv_hashtab.ht_array; todo > 0 && !got_int;
++hi)
if (!HASHITEM_EMPTY(hi))
{
--todo;
if (first)
first = FALSE;
else
ga_append(gap, ',');
if ((options & JSON_JS)
&& is_simple_key(hi->hi_key))
ga_concat(gap, hi->hi_key);
else
write_string(gap, hi->hi_key);
ga_append(gap, ':');
if (json_encode_item(gap, &dict_lookup(hi)->di_tv,
copyID, options | JSON_NO_NONE) == FAIL)
return FAIL;
}
ga_append(gap, '}');
d->dv_copyID = 0;
}
}
break;
case VAR_FLOAT:
#ifdef FEAT_FLOAT
# if defined(HAVE_MATH_H)
if (isnan(val->vval.v_float))
ga_concat(gap, (char_u *)"NaN");
else if (isinf(val->vval.v_float))
ga_concat(gap, (char_u *)"Infinity");
else
# endif
{
vim_snprintf((char *)numbuf, NUMBUFLEN, "%g",
val->vval.v_float);
ga_concat(gap, numbuf);
}
break;
#endif
case VAR_UNKNOWN:
internal_error("json_encode_item()");
return FAIL;
}
return OK;
}
/*
* When "reader" has less than NUMBUFLEN bytes available, call the fill
* callback to get more.
*/
static void
fill_numbuflen(js_read_T *reader)
{
if (reader->js_fill != NULL && (int)(reader->js_end - reader->js_buf)
- reader->js_used < NUMBUFLEN)
{
if (reader->js_fill(reader))
reader->js_end = reader->js_buf + STRLEN(reader->js_buf);
}
}
/*
* Skip white space in "reader". All characters <= space are considered white
* space.
* Also tops up readahead when needed.
*/
static void
json_skip_white(js_read_T *reader)
{
int c;
for (;;)
{
c = reader->js_buf[reader->js_used];
if (reader->js_fill != NULL && c == NUL)
{
if (reader->js_fill(reader))
{
reader->js_end = reader->js_buf + STRLEN(reader->js_buf);
continue;
}
}
if (c == NUL || c > ' ')
break;
++reader->js_used;
}
fill_numbuflen(reader);
}
static int
json_decode_string(js_read_T *reader, typval_T *res, int quote)
{
garray_T ga;
int len;
char_u *p;
int c;
varnumber_T nr;
if (res != NULL)
ga_init2(&ga, 1, 200);
p = reader->js_buf + reader->js_used + 1; /* skip over " or ' */
while (*p != quote)
{
/* The JSON is always expected to be utf-8, thus use utf functions
* here. The string is converted below if needed. */
if (*p == NUL || p[1] == NUL
#ifdef FEAT_MBYTE
|| utf_ptr2len(p) < utf_byte2len(*p)
#endif
)
{
/* Not enough bytes to make a character or end of the string. Get
* more if possible. */
if (reader->js_fill == NULL)
break;
len = (int)(reader->js_end - p);
reader->js_used = (int)(p - reader->js_buf);
if (!reader->js_fill(reader))
break; /* didn't get more */
p = reader->js_buf + reader->js_used;
reader->js_end = reader->js_buf + STRLEN(reader->js_buf);
continue;
}
if (*p == '\\')
{
c = -1;
switch (p[1])
{
case '\\': c = '\\'; break;
case '"': c = '"'; break;
case 'b': c = BS; break;
case 't': c = TAB; break;
case 'n': c = NL; break;
case 'f': c = FF; break;
case 'r': c = CAR; break;
case 'u':
if (reader->js_fill != NULL
&& (int)(reader->js_end - p) < NUMBUFLEN)
{
reader->js_used = (int)(p - reader->js_buf);
if (reader->js_fill(reader))
{
p = reader->js_buf + reader->js_used;
reader->js_end = reader->js_buf
+ STRLEN(reader->js_buf);
}
}
nr = 0;
len = 0;
vim_str2nr(p + 2, NULL, &len,
STR2NR_HEX + STR2NR_FORCE, &nr, NULL, 4);
p += len + 2;
if (0xd800 <= nr && nr <= 0xdfff
&& (int)(reader->js_end - p) >= 6
&& *p == '\\' && *(p+1) == 'u')
{
varnumber_T nr2 = 0;
/* decode surrogate pair: \ud812\u3456 */
len = 0;
vim_str2nr(p + 2, NULL, &len,
STR2NR_HEX + STR2NR_FORCE, &nr2, NULL, 4);
if (0xdc00 <= nr2 && nr2 <= 0xdfff)
{
p += len + 2;
nr = (((nr - 0xd800) << 10) |
((nr2 - 0xdc00) & 0x3ff)) + 0x10000;
}
}
if (res != NULL)
{
#ifdef FEAT_MBYTE
char_u buf[NUMBUFLEN];
buf[utf_char2bytes((int)nr, buf)] = NUL;
ga_concat(&ga, buf);
#else
ga_append(&ga, (int)nr);
#endif
}
break;
default:
/* not a special char, skip over \ */
++p;
continue;
}
if (c > 0)
{
p += 2;
if (res != NULL)
ga_append(&ga, c);
}
}
else
{
#ifdef FEAT_MBYTE
len = utf_ptr2len(p);
#else
len = 1;
#endif
if (res != NULL)
{
if (ga_grow(&ga, len) == FAIL)
{
ga_clear(&ga);
return FAIL;
}
mch_memmove((char *)ga.ga_data + ga.ga_len, p, (size_t)len);
ga.ga_len += len;
}
p += len;
}
}
reader->js_used = (int)(p - reader->js_buf);
if (*p == quote)
{
++reader->js_used;
if (res != NULL)
{
ga_append(&ga, NUL);
res->v_type = VAR_STRING;
#if defined(FEAT_MBYTE) && defined(USE_ICONV)
if (!enc_utf8)
{
vimconv_T conv;
/* Convert the utf-8 string to 'encoding'. */
conv.vc_type = CONV_NONE;
convert_setup(&conv, (char_u*)"utf-8", p_enc);
if (conv.vc_type != CONV_NONE)
{
res->vval.v_string =
string_convert(&conv, ga.ga_data, NULL);
vim_free(ga.ga_data);
}
convert_setup(&conv, NULL, NULL);
}
else
#endif
res->vval.v_string = ga.ga_data;
}
return OK;
}
if (res != NULL)
{
res->v_type = VAR_SPECIAL;
res->vval.v_number = VVAL_NONE;
ga_clear(&ga);
}
return MAYBE;
}
typedef enum {
JSON_ARRAY, /* parsing items in an array */
JSON_OBJECT_KEY, /* parsing key of an object */
JSON_OBJECT /* parsing item in an object, after the key */
} json_decode_T;
typedef struct {
json_decode_T jd_type;
typval_T jd_tv; /* the list or dict */
typval_T jd_key_tv;
char_u *jd_key;
} json_dec_item_T;
/*
* Decode one item and put it in "res". If "res" is NULL only advance.
* Must already have skipped white space.
*
* Return FAIL for a decoding error (and give an error).
* Return MAYBE for an incomplete message.
*/
static int
json_decode_item(js_read_T *reader, typval_T *res, int options)
{
char_u *p;
int len;
int retval;
garray_T stack;
typval_T item;
typval_T *cur_item;
json_dec_item_T *top_item;
char_u key_buf[NUMBUFLEN];
ga_init2(&stack, sizeof(json_dec_item_T), 100);
cur_item = res;
init_tv(&item);
if (res != NULL)
init_tv(res);
fill_numbuflen(reader);
p = reader->js_buf + reader->js_used;
for (;;)
{
top_item = NULL;
if (stack.ga_len > 0)
{
top_item = ((json_dec_item_T *)stack.ga_data) + stack.ga_len - 1;
json_skip_white(reader);
p = reader->js_buf + reader->js_used;
if (*p == NUL)
{
retval = MAYBE;
if (top_item->jd_type == JSON_OBJECT)
/* did get the key, clear it */
clear_tv(&top_item->jd_key_tv);
goto theend;
}
if (top_item->jd_type == JSON_OBJECT_KEY
|| top_item->jd_type == JSON_ARRAY)
{
/* Check for end of object or array. */
if (*p == (top_item->jd_type == JSON_ARRAY ? ']' : '}'))
{
++reader->js_used; /* consume the ']' or '}' */
--stack.ga_len;
if (stack.ga_len == 0)
{
retval = OK;
goto theend;
}
if (cur_item != NULL)
cur_item = &top_item->jd_tv;
goto item_end;
}
}
}
if (top_item != NULL && top_item->jd_type == JSON_OBJECT_KEY
&& (options & JSON_JS)
&& reader->js_buf[reader->js_used] != '"'
&& reader->js_buf[reader->js_used] != '\''
&& reader->js_buf[reader->js_used] != '['
&& reader->js_buf[reader->js_used] != '{')
{
char_u *key;
/* accept an object key that is not in quotes */
key = p = reader->js_buf + reader->js_used;
while (*p != NUL && *p != ':' && *p > ' ')
++p;
if (cur_item != NULL)
{
cur_item->v_type = VAR_STRING;
cur_item->vval.v_string = vim_strnsave(key, (int)(p - key));
top_item->jd_key = cur_item->vval.v_string;
}
reader->js_used += (int)(p - key);
}
else
{
switch (*p)
{
case '[': /* start of array */
if (top_item && top_item->jd_type == JSON_OBJECT_KEY)
{
retval = FAIL;
break;
}
if (ga_grow(&stack, 1) == FAIL)
{
retval = FAIL;
break;
}
if (cur_item != NULL && rettv_list_alloc(cur_item) == FAIL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_NONE;
retval = FAIL;
break;
}
++reader->js_used; /* consume the '[' */
top_item = ((json_dec_item_T *)stack.ga_data)
+ stack.ga_len;
top_item->jd_type = JSON_ARRAY;
++stack.ga_len;
if (cur_item != NULL)
{
top_item->jd_tv = *cur_item;
cur_item = &item;
}
continue;
case '{': /* start of object */
if (top_item && top_item->jd_type == JSON_OBJECT_KEY)
{
retval = FAIL;
break;
}
if (ga_grow(&stack, 1) == FAIL)
{
retval = FAIL;
break;
}
if (cur_item != NULL && rettv_dict_alloc(cur_item) == FAIL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_NONE;
retval = FAIL;
break;
}
++reader->js_used; /* consume the '{' */
top_item = ((json_dec_item_T *)stack.ga_data)
+ stack.ga_len;
top_item->jd_type = JSON_OBJECT_KEY;
++stack.ga_len;
if (cur_item != NULL)
{
top_item->jd_tv = *cur_item;
cur_item = &top_item->jd_key_tv;
}
continue;
case '"': /* string */
retval = json_decode_string(reader, cur_item, *p);
break;
case '\'':
if (options & JSON_JS)
retval = json_decode_string(reader, cur_item, *p);
else
{
EMSG(_(e_invarg));
retval = FAIL;
}
break;
case ',': /* comma: empty item */
if ((options & JSON_JS) == 0)
{
EMSG(_(e_invarg));
retval = FAIL;
break;
}
/* FALLTHROUGH */
case NUL: /* empty */
if (cur_item != NULL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_NONE;
}
retval = OK;
break;
default:
if (VIM_ISDIGIT(*p) || *p == '-')
{
#ifdef FEAT_FLOAT
char_u *sp = p;
if (*sp == '-')
{
++sp;
if (*sp == NUL)
{
retval = MAYBE;
break;
}
if (!VIM_ISDIGIT(*sp))
{
EMSG(_(e_invarg));
retval = FAIL;
break;
}
}
sp = skipdigits(sp);
if (*sp == '.' || *sp == 'e' || *sp == 'E')
{
if (cur_item == NULL)
{
float_T f;
len = string2float(p, &f);
}
else
{
cur_item->v_type = VAR_FLOAT;
len = string2float(p, &cur_item->vval.v_float);
}
}
else
#endif
{
varnumber_T nr;
vim_str2nr(reader->js_buf + reader->js_used,
NULL, &len, 0, /* what */
&nr, NULL, 0);
if (cur_item != NULL)
{
cur_item->v_type = VAR_NUMBER;
cur_item->vval.v_number = nr;
}
}
reader->js_used += len;
retval = OK;
break;
}
if (STRNICMP((char *)p, "false", 5) == 0)
{
reader->js_used += 5;
if (cur_item != NULL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_FALSE;
}
retval = OK;
break;
}
if (STRNICMP((char *)p, "true", 4) == 0)
{
reader->js_used += 4;
if (cur_item != NULL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_TRUE;
}
retval = OK;
break;
}
if (STRNICMP((char *)p, "null", 4) == 0)
{
reader->js_used += 4;
if (cur_item != NULL)
{
cur_item->v_type = VAR_SPECIAL;
cur_item->vval.v_number = VVAL_NULL;
}
retval = OK;
break;
}
#ifdef FEAT_FLOAT
if (STRNICMP((char *)p, "NaN", 3) == 0)
{
reader->js_used += 3;
if (cur_item != NULL)
{
cur_item->v_type = VAR_FLOAT;
cur_item->vval.v_float = NAN;
}
retval = OK;
break;
}
if (STRNICMP((char *)p, "Infinity", 8) == 0)
{
reader->js_used += 8;
if (cur_item != NULL)
{
cur_item->v_type = VAR_FLOAT;
cur_item->vval.v_float = INFINITY;
}
retval = OK;
break;
}
#endif
/* check for truncated name */
len = (int)(reader->js_end - (reader->js_buf + reader->js_used));
if (
(len < 5 && STRNICMP((char *)p, "false", len) == 0)
#ifdef FEAT_FLOAT
|| (len < 8 && STRNICMP((char *)p, "Infinity", len) == 0)
|| (len < 3 && STRNICMP((char *)p, "NaN", len) == 0)
#endif
|| (len < 4 && (STRNICMP((char *)p, "true", len) == 0
|| STRNICMP((char *)p, "null", len) == 0)))
retval = MAYBE;
else
retval = FAIL;
break;
}
/* We are finished when retval is FAIL or MAYBE and when at the
* toplevel. */
if (retval == FAIL)
break;
if (retval == MAYBE || stack.ga_len == 0)
goto theend;
if (top_item != NULL && top_item->jd_type == JSON_OBJECT_KEY
&& cur_item != NULL)
{
top_item->jd_key = get_tv_string_buf_chk(cur_item, key_buf);
if (top_item->jd_key == NULL)
{
clear_tv(cur_item);
EMSG(_(e_invarg));
retval = FAIL;
goto theend;
}
}
}
item_end:
top_item = ((json_dec_item_T *)stack.ga_data) + stack.ga_len - 1;
switch (top_item->jd_type)
{
case JSON_ARRAY:
if (res != NULL)
{
listitem_T *li = listitem_alloc();
if (li == NULL)
{
clear_tv(cur_item);
retval = FAIL;
goto theend;
}
li->li_tv = *cur_item;
list_append(top_item->jd_tv.vval.v_list, li);
}
if (cur_item != NULL)
cur_item = &item;
json_skip_white(reader);
p = reader->js_buf + reader->js_used;
if (*p == ',')
++reader->js_used;
else if (*p != ']')
{
if (*p == NUL)
retval = MAYBE;
else
{
EMSG(_(e_invarg));
retval = FAIL;
}
goto theend;
}
break;
case JSON_OBJECT_KEY:
json_skip_white(reader);
p = reader->js_buf + reader->js_used;
if (*p != ':')
{
if (cur_item != NULL)
clear_tv(cur_item);
if (*p == NUL)
retval = MAYBE;
else
{
EMSG(_(e_invarg));
retval = FAIL;
}
goto theend;
}
++reader->js_used;
json_skip_white(reader);
top_item->jd_type = JSON_OBJECT;
if (cur_item != NULL)
cur_item = &item;
break;
case JSON_OBJECT:
if (cur_item != NULL
&& dict_find(top_item->jd_tv.vval.v_dict,
top_item->jd_key, -1) != NULL)
{
EMSG2(_("E938: Duplicate key in JSON: \"%s\""),
top_item->jd_key);
clear_tv(&top_item->jd_key_tv);
clear_tv(cur_item);
retval = FAIL;
goto theend;
}
if (cur_item != NULL)
{
dictitem_T *di = dictitem_alloc(top_item->jd_key);
clear_tv(&top_item->jd_key_tv);
if (di == NULL)
{
clear_tv(cur_item);
retval = FAIL;
goto theend;
}
di->di_tv = *cur_item;
di->di_tv.v_lock = 0;
if (dict_add(top_item->jd_tv.vval.v_dict, di) == FAIL)
{
dictitem_free(di);
retval = FAIL;
goto theend;
}
}
json_skip_white(reader);
p = reader->js_buf + reader->js_used;
if (*p == ',')
++reader->js_used;
else if (*p != '}')
{
if (*p == NUL)
retval = MAYBE;
else
{
EMSG(_(e_invarg));
retval = FAIL;
}
goto theend;
}
top_item->jd_type = JSON_OBJECT_KEY;
if (cur_item != NULL)
cur_item = &top_item->jd_key_tv;