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#include "fileRows.h"
#include "xmlObjectLoader.h"
#include "exceptions.h"
ElementLoaderImpl<_FileRows> filerowsLoader("filerows");
_FileRows::_FileRows(const xmlpp::Element * p) :
_SourceObject(p),
PerRowValues(p),
path(p->get_attribute_value("path")),
fieldSep(p->get_attribute_value("fieldSep")[0]),
quoteChar(p->get_attribute_value("quoteChar")[0]),
newline(p->get_attribute_value("newline")),
encoding(p->get_attribute_value("encoding"))
{
BOOST_FOREACH(const xmlpp::Node * node, p->find("columns/column")) {
const xmlpp::Element * elem = dynamic_cast<const xmlpp::Element *>(node);
if (elem) {
columns.push_back(elem->get_child_text()->get_content());
}
}
}
_FileRows::~_FileRows()
{
}
void
_FileRows::loadComplete(const CommonObjects *)
{
}
void
_FileRows::setFilter(const Glib::ustring &)
{
throw NotSupported(__PRETTY_FUNCTION__);
}
unsigned int
_FileRows::columnCount() const
{
return columns.size();
}
const Glib::ustring &
_FileRows::getColumnName(unsigned int col) const
{
return columns[col];
}
void
_FileRows::execute(const RowProcessor * rp) const
{
FileStarChannel c(doOpen());
c.set_encoding(encoding);
c.set_line_term(newline);
Glib::ustring line;
while (c.read_line(line) == Glib::IO_STATUS_NORMAL) {
line.erase(line.length() - newline.length());
Columns::const_iterator curCol = columns.begin();
bool mkCols = columns.empty();
bool inQuotes = false;
bool prevWasQuote = false;
Glib::ustring tok;
BOOST_FOREACH(gunichar c, line) {
if (c == quoteChar) {
if (prevWasQuote) {
tok += c;
prevWasQuote = false;
inQuotes = !inQuotes;
}
else {
prevWasQuote = inQuotes;
inQuotes = !inQuotes;
}
}
else if ((!inQuotes) && (c == fieldSep)) {
prevWasQuote = false;
if (mkCols) {
addColumn(tok);
}
else {
values.push_back(ValPtr(new Glib::ustring(tok)));
curCol++;
}
tok.clear();
}
else {
prevWasQuote = false;
tok += c;
}
}
if (tok.length()) {
if (mkCols) {
addColumn(tok);
}
else {
values.push_back(ValPtr(new Glib::ustring(tok)));
curCol++;
}
}
if (!mkCols && !values.empty()) {
while (values.size() < columns.size()) {
values.push_back(ValPtr(new Glib::ustring()));
curCol++;
}
rp->rowReady();
}
values.clear();
}
}
const Glib::ustring &
_FileRows::getCurrentValue(unsigned int col) const
{
return *values[col];
}
bool
_FileRows::isNull(unsigned int col) const
{
return false;
}
const Glib::ustring &
_FileRows::getCurrentValue(const Glib::ustring & id) const
{
Values::const_iterator v = values.begin();
for (Columns::const_iterator i = columns.begin(); i != columns.end(); i++, v++) {
if (*i == id) {
return **v;
}
}
throw PerRowValues::FieldDoesNotExist();
}
void
_FileRows::addColumn(const Glib::ustring & rawtok) const
{
columns.push_back(rawtok);
Glib::ustring & tok(columns.back());
for (Glib::ustring::iterator i = tok.begin(); i != tok.end(); ) {
if (!isalnum(*i)) {
tok.erase(i);
}
else {
i++;
}
}
}
FileStarChannel
_FileRows::doOpen() const
{
FILE * f = fopen(path->c_str(), "r");
if (!f) {
throw FileNotReadable();
}
return FileStarChannel(f, true, fclose);
}
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