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/* Copyright (C) 2005-2021 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "autoconfig.h"
#include "log.h"
#include "filtseq.h"
#include "rclconfig.h"
static bool filter(const DocSeqFiltSpec& fs, const Rcl::Doc *x)
{
LOGDEB2(" Filter: ncrits " << fs.crits.size() << "\n");
// Compare using each criterion in term. We're doing an or: 1st ok ends
for (unsigned int i = 0; i < fs.crits.size(); i++) {
switch (fs.crits[i]) {
case DocSeqFiltSpec::DSFS_MIMETYPE:
LOGDEB2(" filter: MIMETYPE: me [" << fs.values[i] << "] doc [" << x->mimetype << "]\n");
if (x->mimetype == fs.values[i])
return true;
break;
case DocSeqFiltSpec::DSFS_QLANG: {
LOGDEB(" filter: QLANG [" << fs.values[i] << "]!!\n");
}
break;
case DocSeqFiltSpec::DSFS_PASSALL:
return true;
}
}
// Did all comparisons
return false;
}
DocSeqFiltered::DocSeqFiltered(
RclConfig *conf, std::shared_ptr<DocSequence> iseq, DocSeqFiltSpec &filtspec)
: DocSeqModifier(iseq), m_config(conf)
{
setFiltSpec(filtspec);
}
bool DocSeqFiltered::setFiltSpec(const DocSeqFiltSpec &filtspec)
{
LOGDEB0("DocSeqFiltered::setFiltSpec\n");
for (unsigned int i = 0; i < filtspec.crits.size(); i++) {
switch (filtspec.crits[i]) {
case DocSeqFiltSpec::DSFS_MIMETYPE:
m_spec.orCrit(filtspec.crits[i], filtspec.values[i]);
break;
case DocSeqFiltSpec::DSFS_QLANG: {
// There are very few lang constructs that we can interpret. The
// default config uses rclcat:value only. That will be all for now...
std::string val = filtspec.values[i];
if (val.find("rclcat:") == 0) {
std::string catg = val.substr(7);
std::vector<std::string> tps;
m_config->getMimeCatTypes(catg, tps);
for (const auto& mime : tps) {
LOGDEB2("Adding mime: [" << mime << "]\n");
m_spec.orCrit(DocSeqFiltSpec::DSFS_MIMETYPE, mime);
}
}
}
break;
default:
break;
}
}
// If m_spec ends up empty, pass everything, better than filtering all.
if (m_spec.crits.empty()) {
m_spec.orCrit(DocSeqFiltSpec::DSFS_PASSALL, "");
}
m_dbindices.clear();
return true;
}
bool DocSeqFiltered::getDoc(int idx, Rcl::Doc &doc, std::string *)
{
LOGDEB2("DocSeqFiltered::getDoc() fetching " << idx << "\n");
if (idx >= (int)m_dbindices.size()) {
// Have to fetch docs and filter until we get enough or
// fail
m_dbindices.reserve(idx+1);
// First backend seq doc we fetch is the one after last stored
int backend_idx = m_dbindices.size() > 0 ? m_dbindices.back() + 1 : 0;
// Loop until we get enough docs
Rcl::Doc tdoc;
while (idx >= (int)m_dbindices.size()) {
if (!m_seq->getDoc(backend_idx, tdoc))
return false;
if (filter(m_spec, &tdoc)) {
m_dbindices.push_back(backend_idx);
}
backend_idx++;
}
doc = tdoc;
} else {
// The corresponding backend indice is already known
if (!m_seq->getDoc(m_dbindices[idx], doc))
return false;
}
return true;
}
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