mirror of
https://github.com/tstack/lnav
synced 2024-11-03 23:15:38 +00:00
4ccae48aea
Initial work for #446 and #447 TODO: filtering on tags/comments Also did a bunch of clang-tidy cleanups and improvements to the online help.
153 lines
3.9 KiB
C++
153 lines
3.9 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 ON
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* 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 "config.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "grep_proc.hh"
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#include "line_buffer.hh"
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#include "listview_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) {
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this->ms_buffer.set_fd(fd);
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};
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bool grep_value_for_line(vis_line_t line_number, string &value_out) {
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bool retval = false;
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try {
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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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}
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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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class my_sink : public grep_proc_sink<vis_line_t> {
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public:
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my_sink() : ms_finished(false) { };
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void grep_match(grep_proc<vis_line_t> &gp,
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vis_line_t line,
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int start,
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int end) {
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printf("%d:%d:%d\n", (int)line, start, end);
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};
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void grep_capture(grep_proc<vis_line_t> &gp,
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vis_line_t line,
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int start,
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int end,
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char *capture) {
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fprintf(stderr, "%d(%d:%d)%s\n", (int)line, start, end, capture);
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};
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void grep_end(grep_proc<vis_line_t> &gp) {
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this->ms_finished = true;
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};
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bool ms_finished;
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};
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int 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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}
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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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}
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else if ((code = pcre_compile(argv[1],
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PCRE_CASELESS,
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&errptr,
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&eoff,
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NULL)) == NULL) {
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fprintf(stderr, "error: invalid pattern -- %s\n", errptr);
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}
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else {
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my_source ms(fd);
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my_sink msink;
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grep_proc<vis_line_t> gp(code, ms);
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gp.set_sink(&msink);
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gp.queue_request();
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gp.start();
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while (!msink.ms_finished) {
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vector<struct pollfd> pollfds;
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gp.update_poll_set(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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}
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return retval;
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}
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