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#include "xml.h"
#include "journal.h"
#include "datetime.h"
#include "error.h"
#include <iostream>
#include <sstream>
#include <cstring>
extern "C" {
#include <xmlparse.h> // expat XML parser
}
namespace ledger {
static XML_Parser current_parser;
static unsigned int count;
static journal_t * curr_journal;
static entry_t * curr_entry;
static commodity_t * curr_comm;
static std::string comm_flags;
static std::string data;
static bool ignore;
static std::string have_error;
static void startElement(void *userData, const char *name, const char **attrs)
{
if (ignore)
return;
if (std::strcmp(name, "entry") == 0) {
assert(! curr_entry);
curr_entry = new entry_t;
}
else if (std::strcmp(name, "transaction") == 0) {
assert(curr_entry);
curr_entry->add_transaction(new transaction_t);
}
else if (std::strcmp(name, "commodity") == 0) {
if (std::string(attrs[0]) == "flags")
comm_flags = attrs[1];
}
else if (std::strcmp(name, "total") == 0) {
ignore = true;
}
}
static void endElement(void *userData, const char *name)
{
if (ignore) {
if (std::strcmp(name, "total") == 0)
ignore = false;
return;
}
if (std::strcmp(name, "entry") == 0) {
assert(curr_entry);
if (curr_journal->add_entry(curr_entry)) {
count++;
} else {
account_t * acct = curr_journal->find_account("<Unknown>");
curr_entry->add_transaction(new transaction_t(acct));
if (curr_journal->add_entry(curr_entry)) {
count++;
} else {
delete curr_entry;
have_error = "Entry does not balance";
}
}
curr_entry = NULL;
}
else if (std::strcmp(name, "en:date") == 0) {
quick_parse_date(data.c_str(), &curr_entry->date);
}
else if (std::strcmp(name, "en:cleared") == 0) {
curr_entry->state = entry_t::CLEARED;
}
else if (std::strcmp(name, "en:pending") == 0) {
curr_entry->state = entry_t::PENDING;
}
else if (std::strcmp(name, "en:code") == 0) {
curr_entry->code = data;
}
else if (std::strcmp(name, "en:payee") == 0) {
curr_entry->payee = data;
}
else if (std::strcmp(name, "tr:account") == 0) {
curr_entry->transactions.back()->account = curr_journal->find_account(data);
}
else if (std::strcmp(name, "commodity") == 0) {
assert(! curr_comm);
curr_comm = commodity_t::find_commodity(data, true);
curr_comm->flags |= COMMODITY_STYLE_SUFFIXED;
if (! comm_flags.empty())
for (std::string::size_type i = 0, l = comm_flags.length(); i < l; i++)
switch (comm_flags[i]) {
case 'P': curr_comm->flags &= ~COMMODITY_STYLE_SUFFIXED; break;
case 'S': curr_comm->flags |= COMMODITY_STYLE_SEPARATED; break;
case 'T': curr_comm->flags |= COMMODITY_STYLE_THOUSANDS; break;
case 'E': curr_comm->flags |= COMMODITY_STYLE_EUROPEAN; break;
}
}
else if (std::strcmp(name, "quantity") == 0) {
curr_entry->transactions.back()->amount.parse(data);
if (curr_comm) {
std::string::size_type i = data.find('.');
if (i != std::string::npos) {
int precision = data.length() - i - 1;
if (precision > curr_comm->precision)
curr_comm->precision = precision;
}
curr_entry->transactions.back()->amount.set_commodity(*curr_comm);
curr_comm = NULL;
}
}
else if (std::strcmp(name, "tr:amount") == 0) {
curr_comm = NULL;
}
}
static void dataHandler(void *userData, const char *s, int len)
{
if (! ignore)
data = std::string(s, len);
}
bool xml_parser_t::test(std::istream& in) const
{
char buf[256];
in.getline(buf, 255);
if (std::strncmp(buf, "<?xml version=\"1.0\"?>", 21) != 0) {
in.seekg(0, std::ios::beg);
return false;
}
in.getline(buf, 255);
if (! std::strstr(buf, "<ledger>")) {
in.seekg(0, std::ios::beg);
return false;
}
in.seekg(0, std::ios::beg);
return true;
}
unsigned int xml_parser_t::parse(std::istream& in,
journal_t * journal,
account_t * master,
const std::string * original_file)
{
char buf[BUFSIZ];
count = 0;
curr_journal = journal;
curr_entry = NULL;
curr_comm = NULL;
ignore = false;
XML_Parser parser = XML_ParserCreate(NULL);
current_parser = parser;
XML_SetElementHandler(parser, startElement, endElement);
XML_SetCharacterDataHandler(parser, dataHandler);
while (! in.eof()) {
in.getline(buf, BUFSIZ - 1);
bool result;
try {
result = XML_Parse(parser, buf, std::strlen(buf), in.eof());
}
catch (const std::exception& err) {
unsigned long line = XML_GetCurrentLineNumber(parser);
XML_ParserFree(parser);
throw parse_error(original_file ? *original_file : "<xml>", line,
err.what());
}
if (! have_error.empty()) {
unsigned long line = XML_GetCurrentLineNumber(parser);
parse_error err(original_file ? *original_file : "<xml>", line,
have_error);
std::cerr << "Error: " << err.what() << std::endl;
}
if (! result) {
unsigned long line = XML_GetCurrentLineNumber(parser);
const char * err = XML_ErrorString(XML_GetErrorCode(parser));
XML_ParserFree(parser);
throw parse_error(original_file ? *original_file : "<xml>", line, err);
}
}
XML_ParserFree(parser);
return count;
}
} // namespace ledger
#ifdef USE_BOOST_PYTHON
#include <boost/python.hpp>
using namespace boost::python;
using namespace ledger;
BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS(xml_parse_overloads,
xml_parser_t::parse, 2, 4)
void export_xml() {
class_< xml_parser_t, bases<parser_t> > ("XmlParser")
.def("test", &xml_parser_t::test)
.def("parse", &xml_parser_t::parse, xml_parse_overloads())
;
}
#endif // USE_BOOST_PYTHON
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