2013-05-02 23:02:03 -07:00
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/**
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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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2022-03-16 15:38:08 -07:00
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*
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2013-05-02 23:02:03 -07:00
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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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2022-03-16 15:38:08 -07:00
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*
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2013-05-02 23:02:03 -07:00
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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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2022-03-16 15:38:08 -07:00
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*
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2013-05-02 23:02:03 -07:00
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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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2013-05-02 23:02:03 -07:00
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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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2009-09-13 18:07:32 -07:00
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2022-03-16 15:38:08 -07:00
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#include <fcntl.h>
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2009-09-13 18:07:32 -07:00
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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 "grep_proc.hh"
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#include "line_buffer.hh"
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2018-05-17 07:06:50 -07:00
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#include "listview_curses.hh"
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using namespace std;
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2018-05-17 07:06:50 -07:00
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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) { this->ms_buffer.set_fd(fd); };
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2024-12-22 10:23:10 -08:00
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std::optional<line_info> grep_value_for_line(vis_line_t line_number, string& value_out) override
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2019-06-15 06:32:02 -07:00
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{
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try {
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auto load_result = this->ms_buffer.load_next_line(this->ms_range);
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if (load_result.isOk()) {
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auto li = load_result.unwrap();
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this->ms_range = li.li_file_range;
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if (!li.li_file_range.empty()) {
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auto read_result
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= this->ms_buffer.read_range(li.li_file_range)
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.then([&value_out](auto sbr) {
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value_out = to_string(sbr);
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});
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2024-12-22 10:23:10 -08:00
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if (read_result.isOk()) {
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return line_info{};
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}
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}
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}
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} catch (const 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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2024-12-22 10:23:10 -08:00
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return std::nullopt;
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2009-09-13 18:07:32 -07:00
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};
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2009-09-13 18:07:32 -07:00
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private:
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line_buffer ms_buffer;
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file_range ms_range;
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2009-09-13 18:07:32 -07:00
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};
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2018-05-17 07:06:50 -07:00
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class my_sink : public grep_proc_sink<vis_line_t> {
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2009-09-13 18:07:32 -07:00
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public:
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my_sink() : ms_finished(false) {}
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2022-03-16 15:38:08 -07:00
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void grep_match(grep_proc<vis_line_t>& gp,
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vis_line_t line) override
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{
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printf("%d\n", (int) line);
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}
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2009-09-13 18:07:32 -07:00
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2023-07-18 22:14:45 -07:00
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void grep_end(grep_proc<vis_line_t>& gp) override
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{
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this->ms_finished = true;
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}
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2009-09-13 18:07:32 -07:00
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bool ms_finished;
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};
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2022-03-16 15:38:08 -07:00
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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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auto_fd fd;
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2009-09-13 18:07:32 -07:00
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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 {
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auto compile_res = lnav::pcre2pp::code::from(
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string_fragment::from_c_str(argv[1]), PCRE2_CASELESS);
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2022-09-10 09:28:07 -07:00
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if (compile_res.isErr()) {
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auto ce = compile_res.unwrapErr();
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fprintf(stderr,
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"error: invalid pattern -- %s\n",
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ce.get_message().c_str());
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} else {
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auto co = compile_res.unwrap().to_shared();
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auto psuperv = std::make_shared<pollable_supervisor>();
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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(co, ms, psuperv);
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2022-09-10 09:28:07 -07:00
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gp.set_sink(&msink);
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gp.queue_request(0_vl, gp.until_eof(1));
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gp.start();
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2019-06-15 06:32:02 -07:00
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2022-09-10 09:28:07 -07:00
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while (!msink.ms_finished) {
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vector<struct pollfd> pollfds;
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2019-06-15 06:32:02 -07:00
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2022-09-10 09:28:07 -07:00
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psuperv->update_poll_set(pollfds);
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poll(&pollfds[0], pollfds.size(), -1);
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2019-06-15 06:32:02 -07:00
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2022-09-10 09:28:07 -07:00
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psuperv->check_poll_set(pollfds);
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}
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2019-06-15 06:32:02 -07:00
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}
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2009-09-13 18:07:32 -07:00
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}
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2015-04-08 20:36:45 -07:00
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2009-09-13 18:07:32 -07:00
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return retval;
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}
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