mirror of https://github.com/tstack/lnav
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
/**
|
|
* Copyright (c) 2017, 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 "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
#include "lnav.hh"
|
|
#include "auto_mem.hh"
|
|
#include "lnav_log.hh"
|
|
#include "sql_util.hh"
|
|
#include "file_vtab.hh"
|
|
#include "vtab_module.hh"
|
|
|
|
using namespace std;
|
|
|
|
struct lnav_file : public tvt_iterator_cursor<lnav_file> {
|
|
using iterator = vector<logfile *>::iterator;
|
|
|
|
static constexpr const char *CREATE_STMT = R"(
|
|
-- Access lnav's open file list through this table.
|
|
CREATE TABLE lnav_file (
|
|
device integer,
|
|
inode integer,
|
|
filepath text,
|
|
format text,
|
|
lines integer
|
|
);
|
|
)";
|
|
|
|
struct vtab {
|
|
sqlite3_vtab base;
|
|
|
|
operator sqlite3_vtab *() {
|
|
return &this->base;
|
|
};
|
|
};
|
|
|
|
iterator begin() {
|
|
return lnav_data.ld_files.begin();
|
|
}
|
|
|
|
iterator end() {
|
|
return lnav_data.ld_files.end();
|
|
}
|
|
|
|
int get_column(const cursor &vc, sqlite3_context *ctx, int col) {
|
|
logfile *lf = *vc.iter;
|
|
const struct stat &st = lf->get_stat();
|
|
const string &name = lf->get_filename();
|
|
log_format *format = lf->get_format();
|
|
const char *format_name =
|
|
format != nullptr ? format->get_name().get() : nullptr;
|
|
|
|
switch (col) {
|
|
case 0:
|
|
sqlite3_result_int(ctx, st.st_dev);
|
|
break;
|
|
case 1:
|
|
sqlite3_result_int(ctx, st.st_ino);
|
|
break;
|
|
case 2:
|
|
sqlite3_result_text(ctx, name.c_str(), name.size(),
|
|
SQLITE_TRANSIENT);
|
|
break;
|
|
case 3:
|
|
if (format_name != nullptr) {
|
|
sqlite3_result_text(ctx, format_name, -1, SQLITE_STATIC);
|
|
} else {
|
|
sqlite3_result_null(ctx);
|
|
}
|
|
break;
|
|
case 4:
|
|
sqlite3_result_int(ctx, lf->size());
|
|
break;
|
|
}
|
|
|
|
return SQLITE_OK;
|
|
}
|
|
};
|
|
|
|
|
|
int register_file_vtab(sqlite3 *db)
|
|
{
|
|
static vtab_module<tvt_no_update<lnav_file>> LNAV_FILE_MODULE;
|
|
|
|
int rc;
|
|
|
|
rc = LNAV_FILE_MODULE.create(db, "lnav_file");
|
|
|
|
ensure(rc == SQLITE_OK);
|
|
|
|
return rc;
|
|
}
|