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/**
* Copyright (c) 2015, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of Timothy Stack nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef filter_observer_hh
#define filter_observer_hh
#include <sys/types.h>
#include "logfile.hh"
#include "textview_curses.hh"
class line_filter_observer : public logline_observer {
public:
line_filter_observer(filter_stack& fs, std::shared_ptr<logfile> lf)
: lfo_filter_stack(fs), lfo_filter_state(lf)
{
}
void logline_restart(const logfile& lf, file_size_t rollback_size) override
{
for (auto& filter : this->lfo_filter_stack) {
filter->revert_to_last(this->lfo_filter_state, rollback_size);
}
}
void logline_new_lines(const logfile& lf,
logfile::const_iterator ll_begin,
logfile::const_iterator ll_end,
shared_buffer_ref& sbr) override;
void logline_eof(const logfile& lf) override;
bool excluded(uint32_t filter_in_mask,
uint32_t filter_out_mask,
size_t offset) const
{
bool filtered_in = (filter_in_mask == 0)
|| (this->lfo_filter_state.tfs_mask[offset] & filter_in_mask) != 0;
bool filtered_out
= (this->lfo_filter_state.tfs_mask[offset] & filter_out_mask) != 0;
return !filtered_in || filtered_out;
}
size_t get_min_count(size_t max) const;
void clear_deleted_filter_state();
filter_stack& lfo_filter_stack;
logfile_filter_state lfo_filter_state;
};
#endif
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