mirror of
https://github.com/tstack/lnav
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108 lines
2.9 KiB
C++
108 lines
2.9 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 <stdio.h>
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#include <string.h>
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#include <assert.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 "logfile.hh"
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#include "grep_proc.hh"
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#include "line_buffer.hh"
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class my_source : public grep_proc_source {
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public:
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logfile *ms_lf;
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my_source(logfile *lf) : ms_lf(lf) { };
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size_t grep_lines(void) {
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return this->ms_lf->size();
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};
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void grep_value_for_line(int line,
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std::string &value_out,
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int pass) {
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value_out = this->ms_lf->read_line(this->ms_lf->begin() + line);
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};
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};
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class my_sink : public grep_proc_sink {
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public:
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void grep_match(grep_line_t line, int start, int end) {
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printf("%d - %d:%d\n", (int)line, start, end);
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};
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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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auto_fd fd;
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fd = open("/tmp/gp.err", O_WRONLY|O_CREAT|O_APPEND, 0666);
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dup2(fd, STDERR_FILENO);
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fprintf(stderr, "startup\n");
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if (argc < 2) {
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fprintf(stderr, "error: no file given\n");
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}
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else {
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logfile lf(argv[1]);
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lf.rebuild_index();
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my_source ms(&lf);
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my_sink msink;
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grep_proc gp("pnp", ms);
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gp.start();
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gp.set_sink(&msink);
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fd_set read_fds;
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int maxfd = gp.update_fd_set(read_fds);
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while (1) {
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fd_set rfds = read_fds;
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select(maxfd + 1, &rfds, NULL, NULL, NULL);
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gp.check_fd_set(rfds);
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if (!FD_ISSET(maxfd, &read_fds))
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break;
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}
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}
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return retval;
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}
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