static int json_append(bstr *b, const struct mpv_node *src, int indent)
{
switch (src->format) {
case MPV_FORMAT_NONE:
APPEND(b, "null");
return 0;
case MPV_FORMAT_FLAG:
APPEND(b, src->u.flag ? "true" : "false");
return 0;
case MPV_FORMAT_INT64:
bstr_xappend_asprintf(NULL, b, "%"PRId64, src->u.int64);
return 0;
case MPV_FORMAT_DOUBLE:
bstr_xappend_asprintf(NULL, b, "%f", src->u.double_);
return 0;
case MPV_FORMAT_STRING:
write_json_str(b, src->u.string);
return 0;
case MPV_FORMAT_NODE_ARRAY:
case MPV_FORMAT_NODE_MAP: {
struct mpv_node_list *list = src->u.list;
bool is_obj = src->format == MPV_FORMAT_NODE_MAP;
APPEND(b, is_obj ? "{" : "[");
int next_indent = indent >= 0 ? indent + 1 : -1;
for (int n = 0; n < list->num; n++) {
if (n)
APPEND(b, ",");
add_indent(b, next_indent);
if (is_obj) {
write_json_str(b, list->keys[n]);
APPEND(b, ":");
}
json_append(b, &list->values[n], next_indent);
}
add_indent(b, indent);
APPEND(b, is_obj ? "}" : "]");
return 0;
}
}
return -1; // unknown format
}
struct Token* advance_token(int res, struct Token* current, int indent, struct TokenState* state, char* text, int ID_t, int DD_t, struct cTokenError* error) {
int numlines = 0;
int cindent;
int last = state->at;
int ind = 0;
struct Token* tmp;
int i;
for (i=state->at; i < state->at + res; i++) {
if (text[i] == '\n') {
numlines += 1;
last = i;
}
}
state->lineno += numlines;
if (numlines) {
state->charno = state->at + res - last;
} else {
state->charno += res;
}
if (!indent || res != 1 || text[state->at] != '\n') {
return current;
}
ind = t_white(state->at+1, text, state->ln);
if (ind < 0) {
return current;
}
cindent = state->indents[state->num_indents-1];
if (ind > cindent) {
add_indent(state, ind);
tmp = (struct Token*)malloc(sizeof(struct Token));
tmp->value = "";
tmp->which = ID_t;
tmp->next = NULL;
tmp->lineno = state->lineno;
tmp->charno = state->charno;
current->next = tmp;
current = tmp;
} else if (ind < cindent) {
while (ind < cindent) {
state->num_indents -= 1;
tmp = (struct Token*)malloc(sizeof(struct Token));
tmp->value = "";
tmp->which = DD_t;
tmp->next = NULL;
tmp->lineno = state->lineno;
tmp->charno = state->charno;
current->next = tmp;
current = tmp;
cindent = state->indents[state->num_indents - 1];
}
if (ind != cindent) {
// etxt = "invalid indentation -- %d (expected %d)' % (ind, cindent)";
error->text = "invalid indentation";
error->lineno = state->lineno;
error->charno = state->charno;
// error->wanted = cindent;
return NULL;
}
}
return current;
}
int serialize_tree(struct kowhai_node_t** desc, void** data, char* target_buffer, size_t target_size, int level, void* get_name_param, kowhai_get_symbol_name_t get_name, int in_union, int* largest_data_field)
{
int target_offset = 0;
struct kowhai_node_t* node;
int i, chars;
char* node_end_str;
while (1)
{
node = *desc;
if (node->type == KOW_BRANCH_END)
return target_offset;
// indent to current level using tabs
chars = add_indent(&target_buffer, &target_size, &target_offset, level);
if (chars < 0)
return chars;
//
// write node
//
switch (node->type)
{
case KOW_BRANCH_START:
case KOW_BRANCH_U_START:
{
int node_is_union = node->type == KOW_BRANCH_U_START;
int largest_child_data_field = 0;
void* initial_data = *data;
// write header
chars = add_header(&target_buffer, &target_size, &target_offset, node, get_name_param, get_name);
if (chars < 0)
return chars;
if (node->count > 1)
{
struct kowhai_node_t* initial_node = *desc;
// write array identifier
chars = add_string(&target_buffer, &target_size, &target_offset, ", \""ARRAY"\": [\n");
if (chars < 0)
return chars;
for (i = 0; i < node->count; i++)
{
// set descriptor to initial node at the branch array
*desc = initial_node;
(*desc) += 1;
// indent to current level using tab
chars = add_indent(&target_buffer, &target_size, &target_offset, level + 1);
if (chars < 0)
return chars;
// write branch children start
chars = add_string(&target_buffer, &target_size, &target_offset, "[\n");
if (chars < 0)
return chars;
// write branch children
chars = serialize_tree(desc, data, target_buffer, target_size, level + 1, get_name_param, get_name, node_is_union, &largest_child_data_field);
if (chars < 0)
return chars;
target_offset += chars;
target_buffer += chars;
target_size -= chars;
// increment data pointer if node is a union
if (node_is_union)
{
*data = (char*)initial_data + largest_child_data_field;
initial_data = *data;
}
// indent to current level using tab
chars = add_indent(&target_buffer, &target_size, &target_offset, level + 1);
if (chars < 0)
return chars;
// write branch children end
chars = add_string(&target_buffer, &target_size, &target_offset, "]");
if (chars < 0)
return chars;
if (i < node->count - 1)
{
chars = add_string(&target_buffer, &target_size, &target_offset, ",\n");
if (chars < 0)
return chars;
}
else
{
chars = add_string(&target_buffer, &target_size, &target_offset, "\n");
if (chars < 0)
return chars;
}
}
}
else
{
// write children identifier
chars = add_string(&target_buffer, &target_size, &target_offset, ", \""CHILDREN"\": [\n");
if (chars < 0)
return chars;
// write branch children
(*desc) += 1;
chars = serialize_tree(desc, data, target_buffer, target_size, level + 1, get_name_param, get_name, node_is_union, &largest_child_data_field);
if (chars < 0)
return chars;
target_offset += chars;
target_buffer += chars;
target_size -= chars;
// increment data pointer if node is a union
if (node_is_union)
*data = (char*)initial_data + largest_child_data_field;
}
// indent to current level using tab
chars = add_indent(&target_buffer, &target_size, &target_offset, level);
if (chars < 0)
return chars;
// write node end
if (level == 0 || (*desc)[1].type == KOW_BRANCH_END)
node_end_str = "]}\n";
else
node_end_str = "]},\n";
chars = add_string(&target_buffer, &target_size, &target_offset, node_end_str);
if (chars < 0)
return chars;
break;
}
default:
{
int value_size = kowhai_get_node_type_size(node->type);
// write header
chars = add_header(&target_buffer, &target_size, &target_offset, node, get_name_param, get_name);
if (chars < 0)
return chars;
// write value identifier
chars = add_string(&target_buffer, &target_size, &target_offset, ", \""VALUE"\": ");
if (chars < 0)
return chars;
// write value/s
if (node->type == KOW_CHAR && node->count > 1 && str_printable((char *)*data, node->count))
{
// special string case
chars = write_string(target_buffer, target_size, "\"%.*s\"", node->count, (char*)*data);
if (chars >= 0)
{
target_buffer += chars;
target_size -= chars;
target_offset += chars;
}
else
return chars;
// increment data pointer
if (!in_union)
*data = (char*)*data + value_size * node->count;
else if (value_size * node->count > *largest_data_field)
*largest_data_field = value_size * node->count;
}
else if (node->count > 1)
{
// write start bracket
chars = add_string(&target_buffer, &target_size, &target_offset, "[");
if (chars < 0)
return chars;
for (i = 0; i < node->count; i++)
{
// write leaf node array item value
chars = add_value(&target_buffer, &target_size, &target_offset, node->type, (char*)*data + i * value_size);
if (chars < 0)
return chars;
// write comma if there is another array item
if (i < node->count - 1)
{
chars = add_string(&target_buffer, &target_size, &target_offset, ", ");
if (chars < 0)
return chars;
}
}
// increment data pointer
if (!in_union)
*data = (char*)*data + value_size * node->count;
else if (value_size * node->count > *largest_data_field)
*largest_data_field = value_size * node->count;
// write end bracket
chars = add_string(&target_buffer, &target_size, &target_offset, "]");
if (chars < 0)
return chars;
}
else
{
// write leaf node value
chars = add_value(&target_buffer, &target_size, &target_offset, node->type, *data);
if (chars < 0)
return chars;
// increment data pointer
if (!in_union)
*data = (char*)*data + value_size;
else if (value_size > *largest_data_field)
*largest_data_field = value_size;
}
// write node end
if (level == 0 || node[1].type == KOW_BRANCH_END)
node_end_str = " }\n";
else
node_end_str = " },\n";
chars = add_string(&target_buffer, &target_size, &target_offset, node_end_str);
if (chars < 0)
return chars;
break;
}
}
if (level == 0)
return target_offset;
(*desc) += 1;
}
}
/*
* common worker for above two functions
*/
static char *
JsonbToCStringWorker(StringInfo out, JsonbContainer *in, int estimated_len, bool indent)
{
bool first = true;
JsonbIterator *it;
JsonbValue v;
JsonbIteratorToken type = WJB_DONE;
int level = 0;
bool redo_switch = false;
/* If we are indenting, don't add a space after a comma */
int ispaces = indent ? 1 : 2;
/*
* Don't indent the very first item. This gets set to the indent flag at
* the bottom of the loop.
*/
bool use_indent = false;
bool raw_scalar = false;
bool last_was_key = false;
if (out == NULL)
out = makeStringInfo();
enlargeStringInfo(out, (estimated_len >= 0) ? estimated_len : 64);
it = JsonbIteratorInit(in);
while (redo_switch ||
((type = JsonbIteratorNext(&it, &v, false)) != WJB_DONE))
{
redo_switch = false;
switch (type)
{
case WJB_BEGIN_ARRAY:
if (!first)
appendBinaryStringInfo(out, ", ", ispaces);
if (!v.val.array.rawScalar)
{
add_indent(out, use_indent && !last_was_key, level);
appendStringInfoCharMacro(out, '[');
}
else
raw_scalar = true;
first = true;
level++;
break;
case WJB_BEGIN_OBJECT:
if (!first)
appendBinaryStringInfo(out, ", ", ispaces);
add_indent(out, use_indent && !last_was_key, level);
appendStringInfoCharMacro(out, '{');
first = true;
level++;
break;
case WJB_KEY:
if (!first)
appendBinaryStringInfo(out, ", ", ispaces);
first = true;
add_indent(out, use_indent, level);
/* json rules guarantee this is a string */
jsonb_put_escaped_value(out, &v);
appendBinaryStringInfo(out, ": ", 2);
type = JsonbIteratorNext(&it, &v, false);
if (type == WJB_VALUE)
{
first = false;
jsonb_put_escaped_value(out, &v);
}
else
{
Assert(type == WJB_BEGIN_OBJECT || type == WJB_BEGIN_ARRAY);
/*
* We need to rerun the current switch() since we need to
* output the object which we just got from the iterator
* before calling the iterator again.
*/
redo_switch = true;
}
break;
case WJB_ELEM:
if (!first)
appendBinaryStringInfo(out, ", ", ispaces);
first = false;
if (!raw_scalar)
add_indent(out, use_indent, level);
jsonb_put_escaped_value(out, &v);
break;
case WJB_END_ARRAY:
level--;
if (!raw_scalar)
{
add_indent(out, use_indent, level);
appendStringInfoCharMacro(out, ']');
}
first = false;
break;
case WJB_END_OBJECT:
level--;
add_indent(out, use_indent, level);
appendStringInfoCharMacro(out, '}');
first = false;
break;
default:
elog(ERROR, "unknown jsonb iterator token type");
}
use_indent = indent;
last_was_key = redo_switch;
}
Assert(level == 0);
return out->data;
}
static char *add_desc(char *base, size_t *len, size_t *max,
unsigned int indent, unsigned int width,
const struct opt_table *opt)
{
size_t off, prefix, l;
const char *p;
bool same_line = false;
base = add_str(base, len, max, opt->names);
off = strlen(opt->names);
if (opt->type == OPT_HASARG
&& !strchr(opt->names, ' ')
&& !strchr(opt->names, '=')) {
base = add_str(base, len, max, " <arg>");
off += strlen(" <arg>");
}
/* Do we start description on next line? */
if (off + 2 > indent) {
base = add_str(base, len, max, "\n");
off = 0;
} else {
base = add_indent(base, len, max, indent - off);
off = indent;
same_line = true;
}
/* Indent description. */
p = opt->desc;
while ((l = consume_words(p, width - indent, &prefix)) != 0) {
if (!same_line)
base = add_indent(base, len, max, indent);
p += prefix;
base = add_str_len(base, len, max, p, l);
base = add_str(base, len, max, "\n");
off = indent + l;
p += l;
same_line = false;
}
/* Empty description? Make it match normal case. */
if (same_line)
base = add_str(base, len, max, "\n");
if (opt->show) {
char buf[OPT_SHOW_LEN + sizeof("...")];
strcpy(buf + OPT_SHOW_LEN, "...");
opt->show(buf, opt->u.arg);
/* If it doesn't fit on this line, indent. */
if (off + strlen(" (default: ") + strlen(buf) + strlen(")")
> width) {
base = add_indent(base, len, max, indent);
} else {
/* Remove \n. */
(*len)--;
}
base = add_str(base, len, max, " (default: ");
base = add_str(base, len, max, buf);
base = add_str(base, len, max, ")\n");
}
return base;
}