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json.c
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/*
* jsonTrivialCallbackParser - a XML callback parser in C
* Copyright (C) 2018-2023 G. David Butler <gdb@dbSystems.com>
*
* This file is part of jsonTrivialCallbackParser
*
* jsonTrivialCallbackParser is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* jsonTrivialCallbackParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "json.h"
int
jsonParse(
jsonCb_t c
,unsigned int m
,jsonSt_t *t
,const unsigned char *s
,unsigned int l
,void *v
){
const unsigned char *sb;
unsigned int tL; /* current level */
jsonSt_t vl;
if (!(sb = s))
return (-1);
tL = 0;
goto bgn;
err:
l++, s--;
goto rtn;
sep:
for (; l--;) switch (*s++) {
case '\t': case '\n': case '\r': case ' ':
break;
case ':':
if (!tL)
goto err;
(t + tL - 1)->s = vl.s;
(t + tL - 1)->l = vl.l;
goto bgn;
default:
if (c && c(jsonTp_Js, tL, t, &vl, v))
goto rtn;
l++, --s;
goto bgn;
}
if (c)
c(jsonTp_Js, tL, t, &vl, v);
goto rtn;
str:
vl.s = s;
for (; l--;) switch (*s++) {
case '"':
vl.l = s - vl.s - 1;
goto sep;
case '\\':
if (l > 0
&& (*(s + 0) == '"'
|| *(s + 0) == '\\'))
l--, s++;
break;
default:
break;
}
goto rtn;
nbr:
vl.s = s - 1;
for (; l--;) switch (*s++) {
case '+': case '-': case '.':
case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
case 'E': case 'e':
break;
default:
vl.l = s - vl.s - 1;
if (c && c(jsonTp_Jn, tL, t, &vl, v))
goto rtn;
l++, --s;
goto bgn;
}
if (c)
c(jsonTp_Jn, tL, t, &vl, v);
goto rtn;
bgn:
if (tL && !(t + tL - 1)->s)
++(t + tL - 1)->l;
for (; l--;) switch (*s++) {
case '\t': case '\n': case '\r': case ' ':
break;
case ',': /* interesting, comma can be treated as whitespace */
break;
case '[':/*']'*/
if (tL == m)
goto rtn;
vl.s = s - 1, vl.l = 0;
if (c && c(jsonTp_Jb, tL, t, &vl, v))
goto rtn;
(t + tL)->s = 0;
(t + tL)->l = 0;
++tL;
break;
/*'['*/case ']':
if (!tL)
goto err;
--tL;
vl.s = s - 1, vl.l = 0;
if (c && c(jsonTp_Je, tL, t, &vl, v))
goto rtn;
goto bgn;
case '{':/*'}'*/
if (tL == m)
goto rtn;
vl.s = s - 1, vl.l = 1;
if (c && c(jsonTp_Jb, tL, t, &vl, v))
goto rtn;
(t + tL)->s = s;
(t + tL)->l = 0;
++tL;
goto bgn;
/*'{'*/case '}':
if (!tL)
goto err;
--tL;
vl.s = s - 1, vl.l = 1;
if (c && c(jsonTp_Je, tL, t, &vl, v))
goto rtn;
goto bgn;
case '"':
goto str;
case '-':
case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
goto nbr;
case 'f':
if (l > 3
&& *(s + 0) == 'a'
&& *(s + 1) == 'l'
&& *(s + 2) == 's'
&& *(s + 3) == 'e') {
if (c && c(jsonTp_Jf, tL, t, 0, v))
goto rtn;
l -= 4, s += 4;
goto bgn;
} else
goto err;
case 't':
if (l > 2
&& *(s + 0) == 'r'
&& *(s + 1) == 'u'
&& *(s + 2) == 'e') {
if (c && c(jsonTp_Jt, tL, t, 0, v))
goto rtn;
l -= 3, s += 3;
goto bgn;
} else
goto err;
case 'n':
if (l > 2
&& *(s + 0) == 'u'
&& *(s + 1) == 'l'
&& *(s + 2) == 'l') {
if (c && c(jsonTp_Ju, tL, t, 0, v))
goto rtn;
l -= 3, s += 3;
goto bgn;
} else
goto err;
default:
goto err;
}
rtn:
return (s - sb);
}
int
jsonDecodeString(
unsigned char *out
,unsigned int olen
,const unsigned char *in
,unsigned int ilen
){
int len;
len = 0;
for (; ilen--;) switch (*in) {
case '\\':
if (!(in++,ilen--)) goto err; else switch (*in) {
case 'b':
if (olen > 0) {
*out++ = '\b';
olen--;
}
in++;
len++;
break;
case 't':
if (olen > 0) {
*out++ = '\t';
olen--;
}
in++;
len++;
break;
case 'n':
if (olen > 0) {
*out++ = '\n';
olen--;
}
in++;
len++;
break;
case 'f':
if (olen > 0) {
*out++ = '\f';
olen--;
}
in++;
len++;
break;
case 'r':
if (olen > 0) {
*out++ = '\r';
olen--;
}
in++;
len++;
break;
case 'u': {
unsigned long s;
unsigned long c;
unsigned int i;
s = 0;
sur:
c = 0;
for (i = 4; i; --i) if (!(in++,ilen--)) goto err; else switch (*in) {
case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
c *= 16;
c += *in - '0';
break;
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
c *= 16;
c += 10 + (*in - 'A');
break;
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
c *= 16;
c += 10 + (*in - 'a');
break;
default:
goto err;
}
in++;
if (c > 0xd7ff && c < 0xdc00) {
if (!s
&& ilen
&& *(in + 0) == '\\'
&& *(in + 1) == 'u') {
s = c;
++in;
--ilen;
goto sur;
} else
goto err;
}
if (c > 0xdbff && c < 0xe000) {
if (!s)
goto err;
s -= 0xd800;
s *= 0x400;
c -= 0xdc00;
c += s + 0x10000;
}
/* https://en.wikipedia.org/wiki/UTF-8 */
if (c <= 0x7f) { /* 7 bits */
if (olen > 0) {
*out++ = c;
olen--;
}
len++;
} else if (c <= 0x7ff) { /* 11 bits */
if (olen > 1) {
*out++ = 0xc0 | (c >> 6);
*out++ = 0x80 | (c & 0x3f);
olen -= 2;
}
len += 2;
} else if (c <= 0xffff) { /* 16 bits */
if (olen > 2) {
*out++ = 0xe0 | (c >> 12);
*out++ = 0x80 | (c >> 6 & 0x3f);
*out++ = 0x80 | (c & 0x3f);
olen -= 3;
}
len += 3;
} else if (c <= 0x1fffff) { /* 21 bits */
if (olen > 3) {
*out++ = 0xf0 | (c >> 18);
*out++ = 0x80 | (c >> 12 & 0x3f);
*out++ = 0x80 | (c >> 6 & 0x3f);
*out++ = 0x80 | (c & 0x3f);
olen -= 4;
}
len += 4;
} else if (c <= 0x3ffffff) { /* 26 bits */
if (olen > 4) {
*out++ = 0xf8 | (c >> 24);
*out++ = 0x80 | (c >> 18 & 0x3f);
*out++ = 0x80 | (c >> 12 & 0x3f);
*out++ = 0x80 | (c >> 6 & 0x3f);
*out++ = 0x80 | (c & 0x3f);
olen -= 5;
}
len += 5;
} else if (c <= 0x7fffffff) { /* 31 bits */
if (olen > 5) {
*out++ = 0xfc | (c >> 30);
*out++ = 0x80 | (c >> 24 & 0x3f);
*out++ = 0x80 | (c >> 18 & 0x3f);
*out++ = 0x80 | (c >> 12 & 0x3f);
*out++ = 0x80 | (c >> 6 & 0x3f);
*out++ = 0x80 | (c & 0x3f);
olen -= 6;
}
len += 6;
} else
goto err;
} break;
default:
if (olen > 0) {
*out++ = *in;
olen--;
}
in++;
len++;
break;
}
break;
default:
/* https://en.wikipedia.org/wiki/UTF-8 */
if ((*in & 0x80) == 0x00) { /* 1 byte */
if (olen > 0) {
*out++ = *in++;
olen--;
} else
in++;
len++;
} else if (ilen > 0
&& (*in & 0xe0) == 0xc0 /* 2 bytes */
&& (*(in + 1) & 0xc0) == 0x80) {
if (olen > 1) {
*out++ = *in++;
*out++ = *in++;
olen -= 2;
} else
in += 2;
len += 2;
ilen--;
} else if (ilen > 1
&& (*in & 0xf0) == 0xe0 /* 3 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80) {
if (olen > 2) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 3;
} else
in += 3;
len += 3;
ilen -= 2;
} else if (ilen > 2
&& (*in & 0xf8) == 0xf0 /* 4 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80) {
if (olen > 3) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 4;
} else
in += 4;
len += 4;
ilen -= 3;
} else if (ilen > 3
&& (*in & 0xfc) == 0xf8 /* 5 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80
&& (*(in + 4) & 0xc0) == 0x80) {
if (olen > 4) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 5;
} else
in += 5;
len += 5;
ilen -= 4;
} else if (ilen > 4
&& (*in & 0xfe) == 0xfc /* 6 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80
&& (*(in + 4) & 0xc0) == 0x80
&& (*(in + 5) & 0xc0) == 0x80) {
if (olen > 5) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 6;
} else
in += 6;
len += 6;
ilen -= 5;
} else
goto err;
break;
}
return (len);
err:
return (-1);
}
int
jsonEncodeString(
unsigned char *out
,unsigned int olen
,const unsigned char *in
,unsigned int ilen
){
static const char hex[] = "0123456789ABCDEF";
int len;
len = 0;
for (; ilen--;) switch (*in) {
case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07:
case 0x0b: case 0x0e: case 0x0f:
case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17:
case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f:
if (olen > 5) {
*out++ = '\\';
*out++ = 'u';
*out++ = '0';
*out++ = '0';
*out++ = hex[*in >> 4];
*out++ = hex[*in & 0x0f];
olen -= 6;
}
in++;
len += 6;
break;
case '\b': /* 0x08 */
if (olen > 1) {
*out++ = '\\';
*out++ = 'b';
olen -= 2;
}
in++;
len += 2;
break;
case '\t': /* 0x09 */
if (olen > 1) {
*out++ = '\\';
*out++ = 't';
olen -= 2;
}
in++;
len += 2;
break;
case '\n': /* 0x0a */
if (olen > 1) {
*out++ = '\\';
*out++ = 'n';
olen -= 2;
}
in++;
len += 2;
break;
case '\f': /* 0x0c */
if (olen > 1) {
*out++ = '\\';
*out++ = 'f';
olen -= 2;
}
in++;
len += 2;
break;
case '\r': /* 0x0d */
if (olen > 1) {
*out++ = '\\';
*out++ = 'r';
olen -= 2;
}
in++;
len += 2;
break;
case '"': /* 0x22 */
if (olen > 1) {
*out++ = '\\';
*out++ = '"';
olen -= 2;
}
in++;
len += 2;
break;
case '/': /* 0x2f */
if (olen > 1) {
*out++ = '\\';
*out++ = '/';
olen -= 2;
}
in++;
len += 2;
break;
case '\\': /* 0x5c */
if (olen > 1) {
*out++ = '\\';
*out++ = '\\';
olen -= 2;
}
in++;
len += 2;
break;
default:
/* https://en.wikipedia.org/wiki/UTF-8 */
if ((*in & 0x80) == 0x00) { /* 1 byte */
if (olen > 0) {
*out++ = *in++;
olen--;
} else
in++;
len++;
} else if (ilen > 0
&& (*in & 0xe0) == 0xc0 /* 2 bytes */
&& (*(in + 1) & 0xc0) == 0x80) {
if (olen > 1) {
*out++ = *in++;
*out++ = *in++;
olen -= 2;
} else
in += 2;
len += 2;
ilen--;
} else if (ilen > 1
&& (*in & 0xf0) == 0xe0 /* 3 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80) {
if (olen > 2) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 3;
} else
in += 3;
len += 3;
ilen -= 2;
} else if (ilen > 2
&& (*in & 0xf8) == 0xf0 /* 4 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80) {
if (olen > 3) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 4;
} else
in += 4;
len += 4;
ilen -= 3;
} else if (ilen > 3
&& (*in & 0xfc) == 0xf8 /* 5 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80
&& (*(in + 4) & 0xc0) == 0x80) {
if (olen > 4) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 5;
} else
in += 5;
len += 5;
ilen -= 4;
} else if (ilen > 4
&& (*in & 0xfe) == 0xfc /* 6 bytes */
&& (*(in + 1) & 0xc0) == 0x80
&& (*(in + 2) & 0xc0) == 0x80
&& (*(in + 3) & 0xc0) == 0x80
&& (*(in + 4) & 0xc0) == 0x80
&& (*(in + 5) & 0xc0) == 0x80) {
if (olen > 5) {
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
olen -= 6;
} else
in += 6;
len += 6;
ilen -= 5;
} else
return (-1);
break;
}
return (len);
}
int
jsonDecodeBase64(
unsigned char *out
,unsigned int olen
,const char *in
,unsigned int ilen
){
static const unsigned char b64[] = {
66, 66, 66, 66, 66, 66, 66, 66, 66, 64, 64, 66, 66, 64, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
64, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 62, 66, 66, 66, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 66, 66, 66, 65, 66, 66,
66, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 66, 66, 66, 66, 66,
66, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66
};
unsigned long buf;
int len;
buf = 1;
len = 0;
while (ilen-- > 0) {
unsigned char c;
switch ((c = b64[*(unsigned char*)in++])) {
case 66: /* invalid */
return (-1);
case 64: /* whitespace */
continue;
case 65: /* pad */
ilen = 0;
break;
default:
buf = buf << 6 | c;
if (buf & 0x1000000) {
if (olen >= 3) {
*out++ = buf >> 16;
*out++ = buf >> 8;
*out++ = buf;
olen -= 3;
}
len += 3;
buf = 1;
}
break;
}
}
if (buf & 0x40000) {
if (olen >= 2) {
*out++ = buf >> 10;
*out++ = buf >> 2;
}
len += 2;
} else if (buf & 0x1000) {
if (olen >= 1)
*out++ = buf >> 4;
len++;
}
return (len);
}
int
jsonEncodeBase64(
char *out
,unsigned int olen
,const unsigned char *in
,unsigned int ilen
){
static const char b64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int len;
for (len = 0; ilen >= 3; in += 3, ilen -= 3, len += 4) {
if (olen >= 4) {
*out++ = b64[in[0] >> 2];
*out++ = b64[((in[0] << 4) & 0x30) | (in[1] >> 4)];
*out++ = b64[((in[1] << 2) & 0x3c) | (in[2] >> 6)];
*out++ = b64[in[2] & 0x3f];
olen -= 4;
}
}
if (ilen) {
if (olen >= 4) {
unsigned char frag;
*out++ = b64[in[0] >> 2];
frag = (in[0] << 4) & 0x30;
if (ilen > 1)
frag |= in[1] >> 4;
*out++ = b64[frag];
*out++ = (ilen > 1) ? b64[(in[1] << 2) & 0x3c] : '=';
*out++ = '=';
}
len += 4;
}
return (len);
}
int
jsonDecodeBase64Url(
unsigned char *out
,unsigned int olen
,const char *in
,unsigned int ilen
){
static const unsigned char b64[] = {
66, 66, 66, 66, 66, 66, 66, 66, 66, 64, 64, 66, 66, 64, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
64, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 62, 66, 66,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 66, 66, 66, 65, 66, 66,
66, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 66, 66, 66, 66, 63,
66, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66,
66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66
};
unsigned long buf;
int len;
buf = 1;
len = 0;
while (ilen-- > 0) {
unsigned char c;
switch ((c = b64[*(unsigned char*)in++])) {
case 66: /* invalid */
return (-1);
case 64: /* whitespace */
continue;
case 65: /* pad */
ilen = 0;
break;
default:
buf = buf << 6 | c;
if (buf & 0x1000000) {
if (olen >= 3) {
*out++ = buf >> 16;
*out++ = buf >> 8;
*out++ = buf;
olen -= 3;
}
len += 3;
buf = 1;
}
break;
}
}
if (buf & 0x40000) {
if (olen >= 2) {
*out++ = buf >> 10;
*out++ = buf >> 2;
}
len += 2;
} else if (buf & 0x1000) {
if (olen >= 1)
*out++ = buf >> 4;
len++;
}
return (len);
}
int
jsonEncodeBase64Url(
char *out
,unsigned int olen
,const unsigned char *in
,unsigned int ilen
){
static const char b64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
int len;
for (len = 0; ilen >= 3; in += 3, ilen -= 3, len += 4) {
if (olen >= 4) {
*out++ = b64[in[0] >> 2];
*out++ = b64[((in[0] << 4) & 0x30) | (in[1] >> 4)];
*out++ = b64[((in[1] << 2) & 0x3c) | (in[2] >> 6)];
*out++ = b64[in[2] & 0x3f];
olen -= 4;
}
}
if (ilen) {
if (olen >= 2) {
unsigned char frag;
*out++ = b64[in[0] >> 2];
frag = (in[0] << 4) & 0x30;
if (ilen > 1) {
frag |= in[1] >> 4;
*out++ = b64[frag];
if (olen >= 3) {
*out++ = b64[(in[1] << 2) & 0x3c];
++len;
}
} else
*out++ = b64[frag];
}
len += 2;
}
return (len);
}
/* jsonNode routines */
struct jsonNodeCx {
void *(*a)(void *, unsigned long);
jsonNode_t *n;
};
static int
jsonNodeCb(
jsonTp_t t
,unsigned int l
,const jsonSt_t *g
,const jsonSt_t *v
,void *x
#define X ((struct jsonNodeCx *)x)
){
jsonNode_t *tn;
void *tv;
switch (t) {
case jsonTp_Jb:
if (!(tv = X->a(X->n->node, (X->n->nodeN + 1) * sizeof (*X->n->node))))
goto exit;
X->n->node = tv;
if (!(tn = X->a(0, sizeof (*tn))))
goto exit;
*(X->n->node + X->n->nodeN++) = tn;
tn->parent = X->n;
tn->node = 0;
tn->beg = v->s;
tn->user = 0;
tn->name.s = l ? (g + (l - 1))->s : 0;
tn->name.l = l ? (g + (l - 1))->l : 0;
tn->value.s = 0;
tn->value.l = 0;
tn->type = v->l ? jsonTp_Jb : jsonTp_Je;
tn->nodeN = 0;
tn->nodeW = 0;
X->n = tn;
break;
case jsonTp_Je:
X->n->end = v->s;
X->n = X->n->parent;
break;
default:
if (!(tv = X->a(X->n->node, (X->n->nodeN + 1) * sizeof (*X->n->node))))
goto exit;
X->n->node = tv;
if (!(tn = X->a(0, sizeof (*tn))))
goto exit;
*(X->n->node + X->n->nodeN++) = tn;
tn->parent = X->n;
tn->node = 0;
tn->user = 0;
tn->name.s = l ? (g + (l - 1))->s : 0;
tn->name.l = l ? (g + (l - 1))->l : 0;
tn->value.s = v ? v->s : 0;
tn->value.l = v ? v->l : 0;
tn->type = t;
tn->nodeN = 0;
tn->nodeW = 0;
break;
}
return (0);
exit:
return (1);
}
#undef X
int
json2node(
void *(*a)(void *, unsigned long)
,jsonNode_t *n
,jsonSt_t *t
,const unsigned char *s
,unsigned int m
,unsigned int l
){
struct jsonNodeCx cx;
if (!a || !n || !m || !t || !s)
return (-1);
if (!l)
return (0);
cx.a = a;
cx.n = n;
return (jsonParse(jsonNodeCb, m, t, s, l, &cx));
}
void
jsonNodeWalk(
jsonNode_t *n
,void (*a)(jsonNode_t *, unsigned int, jsonNodeVisit_t, void *)
,void *c
){
unsigned int d;
d = 0;
while (n) {
if (!n->nodeN) {
a(n, d, jsonNodeVisitLeaf, c);
n = n->parent;
--d;
continue;
}
if (!n->nodeW)
a(n, d, jsonNodeVisitPreorder, c);
else
a(n, d, jsonNodeVisitInorder, c);
if (n->nodeW < n->nodeN) {
n = *(n->node + n->nodeW++);
++d;
} else {
a(n, d, jsonNodeVisitPostorder, c);
n->nodeW = 0;
n = n->parent;
--d;
}
}
}
void
jsonNodeFree(
void (*d)(void *)
,jsonNode_t *n