mirror of
https://github.com/tstack/lnav.git
synced 2024-08-16 16:30:25 +03:00
104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
/**
|
|
* Copyright (c) 2007-2012, 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.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "grep_proc.hh"
|
|
#include "line_buffer.hh"
|
|
#include "logfile.hh"
|
|
|
|
class my_source : public grep_proc_source {
|
|
public:
|
|
logfile* ms_lf;
|
|
|
|
my_source(logfile* lf) : ms_lf(lf){};
|
|
|
|
size_t grep_lines(void)
|
|
{
|
|
return this->ms_lf->size();
|
|
};
|
|
|
|
void grep_value_for_line(int line, std::string& value_out, int pass)
|
|
{
|
|
value_out = this->ms_lf->read_line(this->ms_lf->begin() + line);
|
|
};
|
|
};
|
|
|
|
class my_sink : public grep_proc_sink {
|
|
public:
|
|
void grep_match(grep_line_t line, int start, int end)
|
|
{
|
|
printf("%d - %d:%d\n", (int) line, start, end);
|
|
};
|
|
};
|
|
|
|
int
|
|
main(int argc, char* argv[])
|
|
{
|
|
int retval = EXIT_SUCCESS;
|
|
auto_fd fd;
|
|
|
|
fd = open("/tmp/gp.err", O_WRONLY | O_CREAT | O_APPEND, 0666);
|
|
dup2(fd, STDERR_FILENO);
|
|
fprintf(stderr, "startup\n");
|
|
|
|
if (argc < 2) {
|
|
fprintf(stderr, "error: no file given\n");
|
|
} else {
|
|
logfile lf(argv[1]);
|
|
lf.rebuild_index();
|
|
my_source ms(&lf);
|
|
my_sink msink;
|
|
grep_proc gp("pnp", ms);
|
|
|
|
gp.start();
|
|
gp.set_sink(&msink);
|
|
|
|
fd_set read_fds;
|
|
|
|
int maxfd = gp.update_fd_set(read_fds);
|
|
|
|
while (1) {
|
|
fd_set rfds = read_fds;
|
|
select(maxfd + 1, &rfds, NULL, NULL, NULL);
|
|
|
|
gp.check_fd_set(rfds);
|
|
if (!FD_ISSET(maxfd, &read_fds))
|
|
break;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|