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144 lines
4.6 KiB
C++
144 lines
4.6 KiB
C++
/**
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* Copyright (c) 2013, 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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* @file state-extension-functions.cc
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*/
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#include "config.h"
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#include <stdint.h>
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#include <string>
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#include "sqlite3.h"
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#include "base/opt_util.hh"
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#include "lnav.hh"
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#include "sql_util.hh"
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#include "vtab_module.hh"
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static nonstd::optional<int64_t> sql_log_top_line()
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{
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const auto& tc = lnav_data.ld_views[LNV_LOG];
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if (tc.get_inner_height() == 0_vl) {
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return nonstd::nullopt;
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}
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return (int64_t) tc.get_top();
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}
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static nonstd::optional<std::string> sql_log_top_datetime()
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{
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const auto& tc = lnav_data.ld_views[LNV_LOG];
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if (tc.get_inner_height() == 0_vl) {
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return nonstd::nullopt;
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}
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auto top_time = lnav_data.ld_log_source.time_for_row(lnav_data.ld_views[LNV_LOG].get_top());
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if (!top_time) {
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return nonstd::nullopt;
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}
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char buffer[64];
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sql_strftime(buffer, sizeof(buffer), top_time.value());
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return buffer;
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}
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static nonstd::optional<std::string> sql_lnav_top_file()
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{
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auto top_view_opt = lnav_data.ld_view_stack.top();
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if (!top_view_opt) {
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return nonstd::nullopt;
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}
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auto top_view = top_view_opt.value();
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return top_view->map_top_row([](const auto& al) {
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return get_string_attr(al.get_attrs(), &logline::L_FILE) | [](const auto* sa) {
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auto lf = (logfile *) sa->sa_value.sav_ptr;
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return nonstd::make_optional(lf->get_filename());
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};
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});
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}
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static const char *sql_lnav_version()
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{
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return PACKAGE_VERSION;
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}
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static int64_t sql_error(const char *str)
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{
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throw sqlite_func_error("{}", str);
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}
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int state_extension_functions(struct FuncDef **basic_funcs,
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struct FuncDefAgg **agg_funcs)
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{
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static struct FuncDef state_funcs[] = {
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sqlite_func_adapter<decltype(&sql_log_top_line), sql_log_top_line>::builder(
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help_text("log_top_line",
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"Return the line number at the top of the log view.")
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.sql_function()
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),
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sqlite_func_adapter<decltype(&sql_log_top_datetime), sql_log_top_datetime>::builder(
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help_text("log_top_datetime",
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"Return the timestamp of the line at the top of the log view.")
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.sql_function()
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),
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sqlite_func_adapter<decltype(&sql_lnav_top_file), sql_lnav_top_file>::builder(
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help_text("lnav_top_file",
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"Return the name of the file that the top line in the current view came from.")
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.sql_function()
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),
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sqlite_func_adapter<decltype(&sql_lnav_version), sql_lnav_version>::builder(
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help_text("lnav_version",
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"Return the current version of lnav")
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.sql_function()
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),
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sqlite_func_adapter<decltype(&sql_error), sql_error>::builder(
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help_text("raise_error",
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"Raises an error with the given message when executed")
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.sql_function()
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.with_parameter({"msg", "The error message"})
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).with_flags(SQLITE_UTF8),
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{ nullptr }
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};
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*basic_funcs = state_funcs;
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return SQLITE_OK;
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}
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