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/* wab.c
* Copyright (c) 2012, Peter Ohler
* All rights reserved.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "oj.h"
#include "err.h"
#include "parse.h"
#include "encode.h"
#include "dump.h"
#include "trace.h"
#include "util.h"
// Workaround in case INFINITY is not defined in math.h or if the OS is CentOS
#define OJ_INFINITY (1.0/0.0)
static char hex_chars[256] = "\
................................\
................xxxxxxxxxx......\
.xxxxxx.........................\
.xxxxxx.........................\
................................\
................................\
................................\
................................";
static VALUE wab_uuid_clas = Qundef;
static VALUE uri_clas = Qundef;
static VALUE uri_http_clas = Qundef;
///// dump functions /////
static VALUE
resolve_wab_uuid_class() {
if (Qundef == wab_uuid_clas) {
volatile VALUE wab_module;
wab_uuid_clas = Qnil;
if (rb_const_defined_at(rb_cObject, rb_intern("WAB"))) {
wab_module = rb_const_get_at(rb_cObject, rb_intern("WAB"));
if (rb_const_defined_at(wab_module, rb_intern("UUID"))) {
wab_uuid_clas = rb_const_get(wab_module, rb_intern("UUID"));
}
}
}
return wab_uuid_clas;
}
static VALUE
resolve_uri_class() {
if (Qundef == uri_clas) {
uri_clas = Qnil;
if (rb_const_defined_at(rb_cObject, rb_intern("URI"))) {
uri_clas = rb_const_get_at(rb_cObject, rb_intern("URI"));
}
}
return uri_clas;
}
static VALUE
resolve_uri_http_class() {
if (Qundef == uri_http_clas) {
volatile VALUE uri_module;
uri_http_clas = Qnil;
if (rb_const_defined_at(rb_cObject, rb_intern("URI"))) {
uri_module = rb_const_get_at(rb_cObject, rb_intern("URI"));
if (rb_const_defined_at(uri_module, rb_intern("HTTP"))) {
uri_http_clas = rb_const_get(uri_module, rb_intern("HTTP"));
}
}
}
return uri_http_clas;
}
static void
raise_wab(VALUE obj) {
rb_raise(rb_eTypeError, "Failed to dump %s Object to JSON in wab mode.\n", rb_class2name(rb_obj_class(obj)));
}
// Removed dependencies on math due to problems with CentOS 5.4.
static void
dump_float(VALUE obj, int depth, Out out, bool as_ok) {
char buf[64];
char *b;
double d = rb_num2dbl(obj);
int cnt = 0;
if (0.0 == d) {
b = buf;
*b++ = '0';
*b++ = '.';
*b++ = '0';
*b++ = '\0';
cnt = 3;
} else {
if (OJ_INFINITY == d || -OJ_INFINITY == d || isnan(d)) {
raise_wab(obj);
} else if (d == (double)(long long int)d) {
cnt = snprintf(buf, sizeof(buf), "%.1f", d);
} else {
cnt = snprintf(buf, sizeof(buf), "%0.16g", d);
}
}
assure_size(out, cnt);
for (b = buf; '\0' != *b; b++) {
*out->cur++ = *b;
}
*out->cur = '\0';
}
static void
dump_array(VALUE a, int depth, Out out, bool as_ok) {
size_t size;
int i, cnt;
int d2 = depth + 1;
cnt = (int)RARRAY_LEN(a);
*out->cur++ = '[';
size = 2;
assure_size(out, size);
if (0 == cnt) {
*out->cur++ = ']';
} else {
size = d2 * out->indent + 2;
cnt--;
for (i = 0; i <= cnt; i++) {
assure_size(out, size);
fill_indent(out, d2);
oj_dump_wab_val(rb_ary_entry(a, i), d2, out);
if (i < cnt) {
*out->cur++ = ',';
}
}
size = depth * out->indent + 1;
assure_size(out, size);
fill_indent(out, depth);
*out->cur++ = ']';
}
*out->cur = '\0';
}
static int
hash_cb(VALUE key, VALUE value, Out out) {
int depth = out->depth;
long size;
int rtype = rb_type(key);
if (rtype != T_SYMBOL) {
rb_raise(rb_eTypeError, "In :wab mode all Hash keys must be Symbols, not %s.\n", rb_class2name(rb_obj_class(key)));
}
size = depth * out->indent + 1;
assure_size(out, size);
fill_indent(out, depth);
oj_dump_sym(key, 0, out, false);
*out->cur++ = ':';
oj_dump_wab_val(value, depth, out);
out->depth = depth;
*out->cur++ = ',';
return ST_CONTINUE;
}
static void
dump_hash(VALUE obj, int depth, Out out, bool as_ok) {
int cnt;
size_t size;
cnt = (int)RHASH_SIZE(obj);
size = depth * out->indent + 2;
assure_size(out, 2);
*out->cur++ = '{';
if (0 == cnt) {
*out->cur++ = '}';
} else {
out->depth = depth + 1;
rb_hash_foreach(obj, hash_cb, (VALUE)out);
if (',' == *(out->cur - 1)) {
out->cur--; // backup to overwrite last comma
}
assure_size(out, size);
fill_indent(out, depth);
*out->cur++ = '}';
}
*out->cur = '\0';
}
static void
dump_time(VALUE obj, Out out) {
char buf[64];
struct _timeInfo ti;
int len;
time_t sec;
long long nsec;
#ifdef HAVE_RB_TIME_TIMESPEC
if (16 <= sizeof(struct timespec)) {
struct timespec ts = rb_time_timespec(obj);
sec = ts.tv_sec;
nsec = ts.tv_nsec;
} else {
sec = rb_num2ll(rb_funcall2(obj, oj_tv_sec_id, 0, 0));
nsec = rb_num2ll(rb_funcall2(obj, oj_tv_nsec_id, 0, 0));
}
#else
sec = rb_num2ll(rb_funcall2(obj, oj_tv_sec_id, 0, 0));
nsec = rb_num2ll(rb_funcall2(obj, oj_tv_nsec_id, 0, 0));
#endif
assure_size(out, 36);
// 2012-01-05T23:58:07.123456000Z
sec_as_time(sec, &ti);
len = sprintf(buf, "%04d-%02d-%02dT%02d:%02d:%02d.%09ldZ", ti.year, ti.mon, ti.day, ti.hour, ti.min, ti.sec, (long)nsec);
oj_dump_cstr(buf, len, 0, 0, out);
}
static void
dump_obj(VALUE obj, int depth, Out out, bool as_ok) {
volatile VALUE clas = rb_obj_class(obj);
if (rb_cTime == clas) {
dump_time(obj, out);
} else if (oj_bigdecimal_class == clas) {
volatile VALUE rstr = rb_funcall(obj, oj_to_s_id, 0);
oj_dump_raw(rb_string_value_ptr((VALUE*)&rstr), (int)RSTRING_LEN(rstr), out);
} else if (resolve_wab_uuid_class() == clas) {
oj_dump_str(rb_funcall(obj, oj_to_s_id, 0), depth, out, false);
} else if (resolve_uri_http_class() == clas) {
oj_dump_str(rb_funcall(obj, oj_to_s_id, 0), depth, out, false);
} else {
raise_wab(obj);
}
}
static DumpFunc wab_funcs[] = {
NULL, // RUBY_T_NONE = 0x00,
dump_obj, // RUBY_T_OBJECT = 0x01,
NULL, // RUBY_T_CLASS = 0x02,
NULL, // RUBY_T_MODULE = 0x03,
dump_float, // RUBY_T_FLOAT = 0x04,
oj_dump_str, // RUBY_T_STRING = 0x05,
NULL, // RUBY_T_REGEXP = 0x06,
dump_array, // RUBY_T_ARRAY = 0x07,
dump_hash, // RUBY_T_HASH = 0x08,
NULL, // RUBY_T_STRUCT = 0x09,
oj_dump_bignum, // RUBY_T_BIGNUM = 0x0a,
NULL, // RUBY_T_FILE = 0x0b,
dump_obj, // RUBY_T_DATA = 0x0c,
NULL, // RUBY_T_MATCH = 0x0d,
NULL, // RUBY_T_COMPLEX = 0x0e,
NULL, // RUBY_T_RATIONAL = 0x0f,
NULL, // 0x10
oj_dump_nil, // RUBY_T_NIL = 0x11,
oj_dump_true, // RUBY_T_TRUE = 0x12,
oj_dump_false, // RUBY_T_FALSE = 0x13,
oj_dump_sym, // RUBY_T_SYMBOL = 0x14,
oj_dump_fixnum, // RUBY_T_FIXNUM = 0x15,
};
void
oj_dump_wab_val(VALUE obj, int depth, Out out) {
int type = rb_type(obj);
if (Yes == out->opts->trace) {
oj_trace("dump", obj, __FILE__, __LINE__, depth, TraceIn);
}
if (MAX_DEPTH < depth) {
rb_raise(rb_eNoMemError, "Too deeply nested.\n");
}
if (0 < type && type <= RUBY_T_FIXNUM) {
DumpFunc f = wab_funcs[type];
if (NULL != f) {
f(obj, depth, out, false);
if (Yes == out->opts->trace) {
oj_trace("dump", obj, __FILE__, __LINE__, depth, TraceOut);
}
return;
}
}
raise_wab(obj);
}
///// load functions /////
static void
hash_end(ParseInfo pi) {
if (Yes == pi->options.trace) {
oj_trace_parse_hash_end(pi, __FILE__, __LINE__);
}
}
static void
array_end(ParseInfo pi) {
if (Yes == pi->options.trace) {
oj_trace_parse_array_end(pi, __FILE__, __LINE__);
}
}
static VALUE
noop_hash_key(ParseInfo pi, const char *key, size_t klen) {
return Qundef;
}
static void
add_value(ParseInfo pi, VALUE val) {
if (Yes == pi->options.trace) {
oj_trace_parse_call("add_value", pi, __FILE__, __LINE__, val);
}
pi->stack.head->val = val;
}
// 123e4567-e89b-12d3-a456-426655440000
static bool
uuid_check(const char *str, int len) {
int i;
for (i = 0; i < 8; i++, str++) {
if ('x' != hex_chars[*(uint8_t*)str]) {
return false;
}
}
str++;
for (i = 0; i < 4; i++, str++) {
if ('x' != hex_chars[*(uint8_t*)str]) {
return false;
}
}
str++;
for (i = 0; i < 4; i++, str++) {
if ('x' != hex_chars[*(uint8_t*)str]) {
return false;
}
}
str++;
for (i = 0; i < 4; i++, str++) {
if ('x' != hex_chars[*(uint8_t*)str]) {
return false;
}
}
str++;
for (i = 0; i < 12; i++, str++) {
if ('x' != hex_chars[*(uint8_t*)str]) {
return false;
}
}
return true;
}
static const char*
read_num(const char *s, int len, int *vp) {
uint32_t v = 0;
for (; 0 < len; len--, s++) {
if ('0' <= *s && *s <= '9') {
v = v * 10 + *s - '0';
} else {
return NULL;
}
}
*vp = (int)v;
return s;
}
static VALUE
time_parse(const char *s, int len) {
struct tm tm;
bool neg = false;
long nsecs = 0;
int i;
time_t secs;
memset(&tm, 0, sizeof(tm));
if ('-' == *s) {
s++;
neg = true;
}
if (NULL == (s = read_num(s, 4, &tm.tm_year))) {
return Qnil;
}
if (neg) {
tm.tm_year = -tm.tm_year;
neg = false;
}
tm.tm_year -= 1900;
s++;
if (NULL == (s = read_num(s, 2, &tm.tm_mon))) {
return Qnil;
}
tm.tm_mon--;
s++;
if (NULL == (s = read_num(s, 2, &tm.tm_mday))) {
return Qnil;
}
s++;
if (NULL == (s = read_num(s, 2, &tm.tm_hour))) {
return Qnil;
}
s++;
if (NULL == (s = read_num(s, 2, &tm.tm_min))) {
return Qnil;
}
s++;
if (NULL == (s = read_num(s, 2, &tm.tm_sec))) {
return Qnil;
}
s++;
for (i = 9; 0 < i; i--, s++) {
if ('0' <= *s && *s <= '9') {
nsecs = nsecs * 10 + *s - '0';
} else {
return Qnil;
}
}
#if IS_WINDOWS
secs = (time_t)mktime(&tm);
memset(&tm, 0, sizeof(tm));
tm.tm_year = 70;
tm.tm_mday = 1;
secs -= (time_t)mktime(&tm);
#else
secs = (time_t)timegm(&tm);
#endif
return rb_funcall(rb_time_nano_new(secs, nsecs), oj_utc_id, 0);
}
static VALUE
protect_uri(VALUE rstr) {
return rb_funcall(resolve_uri_class(), oj_parse_id, 1, rstr);
}
static VALUE
cstr_to_rstr(const char *str, size_t len) {
volatile VALUE v = Qnil;
if (30 == len && '-' == str[4] && '-' == str[7] && 'T' == str[10] && ':' == str[13] && ':' == str[16] && '.' == str[19] && 'Z' == str[29]) {
if (Qnil != (v = time_parse(str, (int)len))) {
return v;
}
}
if (36 == len && '-' == str[8] && '-' == str[13] && '-' == str[18] && '-' == str[23] && uuid_check(str, (int)len) && Qnil != resolve_wab_uuid_class()) {
return rb_funcall(wab_uuid_clas, oj_new_id, 1, rb_str_new(str, len));
}
v = rb_str_new(str, len);
if (7 < len && 0 == strncasecmp("http://", str, 7)) {
int err = 0;
volatile VALUE uri = rb_protect(protect_uri, v, &err);
if (0 == err) {
return uri;
}
}
return oj_encode(v);
}
static void
add_cstr(ParseInfo pi, const char *str, size_t len, const char *orig) {
pi->stack.head->val = cstr_to_rstr(str, len);
if (Yes == pi->options.trace) {
oj_trace_parse_call("add_string", pi, __FILE__, __LINE__, pi->stack.head->val);
}
}
static void
add_num(ParseInfo pi, NumInfo ni) {
if (ni->infinity || ni->nan) {
oj_set_error_at(pi, oj_parse_error_class, __FILE__, __LINE__, "not a number or other value");
}
pi->stack.head->val = oj_num_as_value(ni);
if (Yes == pi->options.trace) {
oj_trace_parse_call("add_number", pi, __FILE__, __LINE__, pi->stack.head->val);
}
}
static VALUE
start_hash(ParseInfo pi) {
if (Yes == pi->options.trace) {
oj_trace_parse_in("start_hash", pi, __FILE__, __LINE__);
}
if (Qnil != pi->options.hash_class) {
return rb_class_new_instance(0, NULL, pi->options.hash_class);
}
return rb_hash_new();
}
static VALUE
calc_hash_key(ParseInfo pi, Val parent) {
volatile VALUE rkey = parent->key_val;
if (Qundef == rkey) {
rkey = rb_str_new(parent->key, parent->klen);
}
rkey = oj_encode(rkey);
rkey = rb_str_intern(rkey);
return rkey;
}
static void
hash_set_cstr(ParseInfo pi, Val parent, const char *str, size_t len, const char *orig) {
volatile VALUE rval = cstr_to_rstr(str, len);
rb_hash_aset(stack_peek(&pi->stack)->val, calc_hash_key(pi, parent), rval);
if (Yes == pi->options.trace) {
oj_trace_parse_call("set_string", pi, __FILE__, __LINE__, rval);
}
}
static void
hash_set_num(ParseInfo pi, Val parent, NumInfo ni) {
volatile VALUE rval = Qnil;
if (ni->infinity || ni->nan) {
oj_set_error_at(pi, oj_parse_error_class, __FILE__, __LINE__, "not a number or other value");
}
rval = oj_num_as_value(ni);
rb_hash_aset(stack_peek(&pi->stack)->val, calc_hash_key(pi, parent), rval);
if (Yes == pi->options.trace) {
oj_trace_parse_call("set_number", pi, __FILE__, __LINE__, rval);
}
}
static void
hash_set_value(ParseInfo pi, Val parent, VALUE value) {
rb_hash_aset(stack_peek(&pi->stack)->val, calc_hash_key(pi, parent), value);
if (Yes == pi->options.trace) {
oj_trace_parse_call("set_value", pi, __FILE__, __LINE__, value);
}
}
static VALUE
start_array(ParseInfo pi) {
if (Yes == pi->options.trace) {
oj_trace_parse_in("start_array", pi, __FILE__, __LINE__);
}
return rb_ary_new();
}
static void
array_append_cstr(ParseInfo pi, const char *str, size_t len, const char *orig) {
volatile VALUE rval = cstr_to_rstr(str, len);
rb_ary_push(stack_peek(&pi->stack)->val, rval);
if (Yes == pi->options.trace) {
oj_trace_parse_call("set_value", pi, __FILE__, __LINE__, rval);
}
}
static void
array_append_num(ParseInfo pi, NumInfo ni) {
volatile VALUE rval = Qnil;
if (ni->infinity || ni->nan) {
oj_set_error_at(pi, oj_parse_error_class, __FILE__, __LINE__, "not a number or other value");
}
rval = oj_num_as_value(ni);
rb_ary_push(stack_peek(&pi->stack)->val, rval);
if (Yes == pi->options.trace) {
oj_trace_parse_call("append_number", pi, __FILE__, __LINE__, rval);
}
}
static void
array_append_value(ParseInfo pi, VALUE value) {
rb_ary_push(stack_peek(&pi->stack)->val, value);
if (Yes == pi->options.trace) {
oj_trace_parse_call("append_value", pi, __FILE__, __LINE__, value);
}
}
void
oj_set_wab_callbacks(ParseInfo pi) {
pi->start_hash = start_hash;
pi->end_hash = hash_end;
pi->hash_key = noop_hash_key;
pi->hash_set_cstr = hash_set_cstr;
pi->hash_set_num = hash_set_num;
pi->hash_set_value = hash_set_value;
pi->start_array = start_array;
pi->end_array = array_end;
pi->array_append_cstr = array_append_cstr;
pi->array_append_num = array_append_num;
pi->array_append_value = array_append_value;
pi->add_cstr = add_cstr;
pi->add_num = add_num;
pi->add_value = add_value;
pi->expect_value = 1;
}
VALUE
oj_wab_parse(int argc, VALUE *argv, VALUE self) {
struct _parseInfo pi;
parse_info_init(&pi);
pi.options = oj_default_options;
pi.handler = Qnil;
pi.err_class = Qnil;
oj_set_wab_callbacks(&pi);
if (T_STRING == rb_type(*argv)) {
return oj_pi_parse(argc, argv, &pi, 0, 0, true);
} else {
return oj_pi_sparse(argc, argv, &pi, 0);
}
}
VALUE
oj_wab_parse_cstr(int argc, VALUE *argv, char *json, size_t len) {
struct _parseInfo pi;
parse_info_init(&pi);
pi.options = oj_default_options;
pi.handler = Qnil;
pi.err_class = Qnil;
oj_set_wab_callbacks(&pi);
return oj_pi_parse(argc, argv, &pi, json, len, true);
}
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