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/**
* Copyright (c) 2013, 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.
*
* @file state-extension-functions.cc
*/
#include <string>
#include <stdint.h>
#include "base/opt_util.hh"
#include "config.h"
#include "lnav.hh"
#include "sql_util.hh"
#include "sqlite3.h"
#include "vtab_module.hh"
static nonstd::optional<int64_t>
sql_log_top_line()
{
const auto& tc = lnav_data.ld_views[LNV_LOG];
if (tc.get_inner_height() == 0_vl) {
return nonstd::nullopt;
}
return (int64_t) tc.get_selection();
}
static nonstd::optional<int64_t>
sql_log_msg_line()
{
const auto& tc = lnav_data.ld_views[LNV_LOG];
if (tc.get_inner_height() == 0_vl) {
return nonstd::nullopt;
}
auto top_line = tc.get_selection();
auto line_pair_opt = lnav_data.ld_log_source.find_line_with_file(top_line);
if (!line_pair_opt) {
return nonstd::nullopt;
}
auto ll = line_pair_opt.value().second;
while (ll->is_continued()) {
--ll;
top_line -= 1_vl;
}
return (int64_t) top_line;
}
static nonstd::optional<std::string>
sql_log_top_datetime()
{
const auto& tc = lnav_data.ld_views[LNV_LOG];
if (tc.get_inner_height() == 0_vl) {
return nonstd::nullopt;
}
auto top_ri = lnav_data.ld_log_source.time_for_row(
lnav_data.ld_views[LNV_LOG].get_selection());
if (!top_ri) {
return nonstd::nullopt;
}
char buffer[64];
sql_strftime(buffer, sizeof(buffer), top_ri->ri_time);
return buffer;
}
static nonstd::optional<std::string>
sql_lnav_top_file()
{
auto top_view_opt = lnav_data.ld_view_stack.top();
if (!top_view_opt) {
return nonstd::nullopt;
}
auto* top_view = top_view_opt.value();
return top_view->map_top_row([](const auto& al) {
return get_string_attr(al.get_attrs(), logline::L_FILE) |
[](const auto wrapper) {
auto lf = wrapper.get();
return nonstd::make_optional(lf->get_filename());
};
});
}
static const char*
sql_lnav_version()
{
return PACKAGE_VERSION;
}
static int64_t
sql_error(const char* str, nonstd::optional<string_fragment> reason)
{
auto um = lnav::console::user_message::error(str);
if (reason) {
um.with_reason(reason->to_string());
}
throw um;
}
static nonstd::optional<std::string>
sql_echoln(nonstd::optional<std::string> arg)
{
if (arg) {
auto& ec = lnav_data.ld_exec_context;
auto outfile = ec.get_output();
if (outfile) {
fmt::print(outfile.value(), FMT_STRING("{}\n"), arg.value());
if (outfile.value() == stdout) {
lnav_data.ld_stdout_used = true;
}
}
}
return arg;
}
int
state_extension_functions(struct FuncDef** basic_funcs,
struct FuncDefAgg** agg_funcs)
{
static struct FuncDef state_funcs[] = {
sqlite_func_adapter<decltype(&sql_log_top_line), sql_log_top_line>::
builder(
help_text(
"log_top_line",
"Return the number of the focused line of the log view.")
.sql_function()
.with_prql_path({"lnav", "view", "top_line"})),
sqlite_func_adapter<decltype(&sql_log_msg_line), sql_log_msg_line>::
builder(help_text("log_msg_line",
"Return the starting line number of the focused "
"log message.")
.sql_function()
.with_prql_path({"lnav", "view", "msg_line"})),
sqlite_func_adapter<decltype(&sql_log_top_datetime),
sql_log_top_datetime>::
builder(help_text("log_top_datetime",
"Return the timestamp of the line at the top of "
"the log view.")
.sql_function()
.with_prql_path({"lnav", "view", "top_datetime"})),
sqlite_func_adapter<decltype(&sql_lnav_top_file), sql_lnav_top_file>::
builder(help_text("lnav_top_file",
"Return the name of the file that the top line "
"in the current view came from.")
.sql_function()
.with_prql_path({"lnav", "view", "top_file"})),
sqlite_func_adapter<decltype(&sql_lnav_version), sql_lnav_version>::
builder(
help_text("lnav_version", "Return the current version of lnav")
.sql_function()
.with_prql_path({"lnav", "version"})),
sqlite_func_adapter<decltype(&sql_error), sql_error>::builder(
help_text("raise_error",
"Raises an error with the given message when executed")
.sql_function()
.with_parameter({"msg", "The error message"})
.with_parameter(
help_text("reason", "The reason the error occurred")
.optional())
.with_example({
"To raise an error if a variable is not set",
"SELECT ifnull($val, raise_error('please set $val', "
"'because'))",
}))
.with_flags(SQLITE_UTF8),
sqlite_func_adapter<decltype(&sql_echoln), sql_echoln>::builder(
help_text("echoln",
"Echo the argument to the current output file and return "
"it")
.sql_function()
.with_parameter(
{"value", "The value to write to the current output file"})
.with_tags({"io"}))
.with_flags(SQLITE_UTF8),
{nullptr},
};
*basic_funcs = state_funcs;
return SQLITE_OK;
}
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