mirror of
https://github.com/tstack/lnav
synced 2024-11-15 18:13:10 +00:00
151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
/**
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* Copyright (c) 2007-2012, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <algorithm>
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#include <list>
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#include <map>
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#include <vector>
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#include <assert.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "config.h"
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#include "logfile.hh"
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#include "sequence_matcher.hh"
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#include "sequence_sink.hh"
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#include "textview_curses.hh"
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using namespace std;
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class my_source : public grep_proc_source<vis_line_t> {
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public:
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my_source(auto_fd& fd) : ms_offset(0) { this->ms_buffer.set_fd(fd); };
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bool grep_value_for_line(vis_line_t line_number, string& value_out)
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{
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bool retval = false;
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try {
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#if 0
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line_value lv;
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if (this->ms_buffer.read_line(this->ms_offset, lv)) {
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value_out = string(lv.lv_start, lv.lv_len);
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retval = true;
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}
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#endif
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} catch (line_buffer::error& e) {
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fprintf(stderr,
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"error: source buffer error %d %s\n",
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this->ms_buffer.get_fd(),
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strerror(e.e_err));
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}
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return retval;
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};
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private:
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line_buffer ms_buffer;
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off_t ms_offset;
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};
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int
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main(int argc, char* argv[])
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{
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int retval = EXIT_SUCCESS;
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const char* errptr;
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auto_fd fd;
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pcre* code;
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int eoff;
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if (argc < 3) {
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fprintf(stderr, "error: expecting pattern and file arguments\n");
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retval = EXIT_FAILURE;
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} else if ((fd = open(argv[2], O_RDONLY)) == -1) {
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perror("open");
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retval = EXIT_FAILURE;
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} else if ((code
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= pcre_compile(argv[1], PCRE_CASELESS, &errptr, &eoff, NULL))
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== NULL)
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{
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fprintf(stderr, "error: invalid pattern -- %s\n", errptr);
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} else {
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my_source ms(fd);
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sequence_matcher::field_col_t fc;
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fc.resize(2);
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sequence_matcher::field_row_t& frf = fc.front();
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frf.resize(2);
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frf[0] = "eth0";
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frf[1] = "eth0";
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sequence_matcher::field_row_t& frb = fc.back();
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frb.resize(2);
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frb[0] = "up";
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frb[1] = "down";
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static bookmark_type_t SEQUENCE("sequence");
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sequence_matcher sm(fc);
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vis_bookmarks bm;
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sequence_sink ss(sm, bm[&SEQUENCE]);
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grep_proc<vis_line_t> gp(code, ms);
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gp.set_sink(&ss);
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gp.queue_request();
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gp.start();
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while (bm[&SEQUENCE].size() == 0) {
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vector<struct pollfd> pollfds;
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poll(&pollfds[0], pollfds.size(), -1);
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gp.check_poll_set(pollfds);
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}
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for (bookmark_vector<vis_line_t>::iterator iter = bm[&SEQUENCE].begin();
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iter != bm[&SEQUENCE].end();
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++iter)
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{
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printf("%d\n", (const int) *iter);
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}
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}
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return retval;
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}
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