mirror of
https://github.com/tstack/lnav.git
synced 2024-09-11 13:05:51 +03:00
80 lines
1.4 KiB
C++
80 lines
1.4 KiB
C++
|
|
||
|
#include <stdio.h>
|
||
|
#include <string.h>
|
||
|
#include <assert.h>
|
||
|
#include <stdlib.h>
|
||
|
#include <fcntl.h>
|
||
|
#include <unistd.h>
|
||
|
|
||
|
#include "logfile.hh"
|
||
|
#include "grep_proc.hh"
|
||
|
#include "line_buffer.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;
|
||
|
}
|