121 lines
4.0 KiB
C++
121 lines
4.0 KiB
C++
/* Copyright (C) 2005-2021 J.F.Dockes
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "autoconfig.h"
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#include "log.h"
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#include "filtseq.h"
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#include "rclconfig.h"
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using std::string;
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static bool filter(const DocSeqFiltSpec& fs, const Rcl::Doc *x)
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{
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LOGDEB2(" Filter: ncrits " << fs.crits.size() << "\n");
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// Compare using each criterion in term. We're doing an or: 1st ok ends
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for (unsigned int i = 0; i < fs.crits.size(); i++) {
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switch (fs.crits[i]) {
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case DocSeqFiltSpec::DSFS_MIMETYPE:
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LOGDEB2(" filter: MIMETYPE: me [" << fs.values[i] << "] doc [" << x->mimetype << "]\n");
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if (x->mimetype == fs.values[i])
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return true;
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break;
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case DocSeqFiltSpec::DSFS_QLANG: {
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LOGDEB(" filter: QLANG [" << fs.values[i] << "]!!\n");
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}
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break;
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case DocSeqFiltSpec::DSFS_PASSALL:
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return true;
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}
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}
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// Did all comparisons
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return false;
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}
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DocSeqFiltered::DocSeqFiltered(
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RclConfig *conf, std::shared_ptr<DocSequence> iseq, DocSeqFiltSpec &filtspec)
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: DocSeqModifier(iseq), m_config(conf)
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{
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setFiltSpec(filtspec);
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}
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bool DocSeqFiltered::setFiltSpec(const DocSeqFiltSpec &filtspec)
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{
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LOGDEB0("DocSeqFiltered::setFiltSpec\n");
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for (unsigned int i = 0; i < filtspec.crits.size(); i++) {
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switch (filtspec.crits[i]) {
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case DocSeqFiltSpec::DSFS_MIMETYPE:
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m_spec.orCrit(filtspec.crits[i], filtspec.values[i]);
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break;
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case DocSeqFiltSpec::DSFS_QLANG: {
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// There are very few lang constructs that we can interpret. The
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// default config uses rclcat:value only. That will be all for now...
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string val = filtspec.values[i];
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if (val.find("rclcat:") == 0) {
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string catg = val.substr(7);
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vector<string> tps;
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m_config->getMimeCatTypes(catg, tps);
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for (const auto& mime : tps) {
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LOGDEB2("Adding mime: [" << mime << "]\n");
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m_spec.orCrit(DocSeqFiltSpec::DSFS_MIMETYPE, mime);
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}
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}
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}
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break;
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default:
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break;
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}
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}
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// If m_spec ends up empty, pass everything, better than filtering all.
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if (m_spec.crits.empty()) {
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m_spec.orCrit(DocSeqFiltSpec::DSFS_PASSALL, "");
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}
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m_dbindices.clear();
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return true;
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}
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bool DocSeqFiltered::getDoc(int idx, Rcl::Doc &doc, string *)
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{
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LOGDEB2("DocSeqFiltered::getDoc() fetching " << idx << "\n");
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if (idx >= (int)m_dbindices.size()) {
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// Have to fetch docs and filter until we get enough or
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// fail
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m_dbindices.reserve(idx+1);
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// First backend seq doc we fetch is the one after last stored
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int backend_idx = m_dbindices.size() > 0 ? m_dbindices.back() + 1 : 0;
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// Loop until we get enough docs
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Rcl::Doc tdoc;
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while (idx >= (int)m_dbindices.size()) {
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if (!m_seq->getDoc(backend_idx, tdoc))
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return false;
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if (filter(m_spec, &tdoc)) {
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m_dbindices.push_back(backend_idx);
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}
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backend_idx++;
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}
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doc = tdoc;
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} else {
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// The corresponding backend indice is already known
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if (!m_seq->getDoc(m_dbindices[idx], doc))
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return false;
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}
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return true;
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}
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