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648 lines
21 KiB
C++
648 lines
21 KiB
C++
/**
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* Copyright (c) 2018, 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
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* ON 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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#include "view_helpers.hh"
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#include "config.h"
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#include "environ_vtab.hh"
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#include "help-txt.h"
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#include "lnav.hh"
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#include "pretty_printer.hh"
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#include "shlex.hh"
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#include "sql_help.hh"
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#include "sql_util.hh"
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#include "view_helpers.examples.hh"
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#include "vtab_module.hh"
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const char* lnav_view_strings[LNV__MAX + 1] = {
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"log",
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"text",
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"help",
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"histogram",
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"db",
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"schema",
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"pretty",
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"spectro",
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nullptr,
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};
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nonstd::optional<lnav_view_t>
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view_from_string(const char* name)
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{
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if (name == nullptr) {
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return nonstd::nullopt;
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}
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auto view_name_iter
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= std::find_if(std::begin(lnav_view_strings),
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std::end(lnav_view_strings),
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[&](const char* v) {
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return v != nullptr && strcasecmp(v, name) == 0;
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});
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if (view_name_iter == std::end(lnav_view_strings)) {
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return nonstd::nullopt;
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}
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return lnav_view_t(view_name_iter - lnav_view_strings);
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}
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static void
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open_schema_view()
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{
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textview_curses* schema_tc = &lnav_data.ld_views[LNV_SCHEMA];
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std::string schema;
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dump_sqlite_schema(lnav_data.ld_db, schema);
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schema += "\n\n-- Virtual Table Definitions --\n\n";
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schema += ENVIRON_CREATE_STMT;
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schema += vtab_module_schemas;
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for (const auto& vtab_iter : *lnav_data.ld_vtab_manager) {
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schema += "\n" + vtab_iter.second->get_table_statement();
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}
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delete schema_tc->get_sub_source();
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auto* pts = new plain_text_source(schema);
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pts->set_text_format(text_format_t::TF_SQL);
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schema_tc->set_sub_source(pts);
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schema_tc->redo_search();
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}
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static void
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open_pretty_view()
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{
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static const char* NOTHING_MSG = "Nothing to pretty-print";
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textview_curses* top_tc = *lnav_data.ld_view_stack.top();
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textview_curses* pretty_tc = &lnav_data.ld_views[LNV_PRETTY];
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textview_curses* log_tc = &lnav_data.ld_views[LNV_LOG];
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textview_curses* text_tc = &lnav_data.ld_views[LNV_TEXT];
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attr_line_t full_text;
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delete pretty_tc->get_sub_source();
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pretty_tc->set_sub_source(nullptr);
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if (top_tc->get_inner_height() == 0) {
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pretty_tc->set_sub_source(new plain_text_source(NOTHING_MSG));
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return;
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}
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if (top_tc == log_tc) {
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logfile_sub_source& lss = lnav_data.ld_log_source;
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bool first_line = true;
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for (vis_line_t vl = log_tc->get_top(); vl <= log_tc->get_bottom();
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++vl) {
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content_line_t cl = lss.at(vl);
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auto lf = lss.find(cl);
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auto ll = lf->begin() + cl;
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shared_buffer_ref sbr;
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if (!first_line && !ll->is_message()) {
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continue;
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}
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auto ll_start = lf->message_start(ll);
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attr_line_t al;
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vl -= vis_line_t(distance(ll_start, ll));
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lss.text_value_for_line(
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*log_tc,
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vl,
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al.get_string(),
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text_sub_source::RF_FULL | text_sub_source::RF_REWRITE);
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lss.text_attrs_for_line(*log_tc, vl, al.get_attrs());
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if (log_tc->get_hide_fields()) {
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al.apply_hide();
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}
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line_range orig_lr
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= find_string_attr_range(al.get_attrs(), &SA_ORIGINAL_LINE);
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attr_line_t orig_al
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= al.subline(orig_lr.lr_start, orig_lr.length());
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attr_line_t prefix_al = al.subline(0, orig_lr.lr_start);
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data_scanner ds(orig_al.get_string());
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pretty_printer pp(&ds, orig_al.get_attrs());
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attr_line_t pretty_al;
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std::vector<attr_line_t> pretty_lines;
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// TODO: dump more details of the line in the output.
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pp.append_to(pretty_al);
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pretty_al.split_lines(pretty_lines);
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for (auto& pretty_line : pretty_lines) {
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if (pretty_line.empty() && &pretty_line == &pretty_lines.back())
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{
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break;
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}
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pretty_line.insert(0, prefix_al);
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pretty_line.append("\n");
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full_text.append(pretty_line);
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}
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first_line = false;
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}
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if (!full_text.empty()) {
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full_text.erase(full_text.length() - 1, 1);
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}
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} else if (top_tc == text_tc) {
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auto lf = lnav_data.ld_text_source.current_file();
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for (vis_line_t vl = text_tc->get_top(); vl <= text_tc->get_bottom();
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++vl) {
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auto ll = lf->begin() + vl;
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shared_buffer_ref sbr;
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lf->read_full_message(ll, sbr);
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data_scanner ds(sbr);
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string_attrs_t sa;
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pretty_printer pp(&ds, sa);
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pp.append_to(full_text);
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}
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}
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auto* pts = new plain_text_source();
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pts->replace_with(full_text);
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pretty_tc->set_sub_source(pts);
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if (lnav_data.ld_last_pretty_print_top != log_tc->get_top()) {
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pretty_tc->set_top(vis_line_t(0));
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}
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lnav_data.ld_last_pretty_print_top = log_tc->get_top();
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pretty_tc->redo_search();
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}
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static void
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build_all_help_text()
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{
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if (!lnav_data.ld_help_source.empty()) {
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return;
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}
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attr_line_t all_help_text;
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shlex lexer(help_txt.to_string_fragment());
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std::string sub_help_text;
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lexer.with_ignore_quotes(true).eval(
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sub_help_text, lnav_data.ld_exec_context.ec_global_vars);
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all_help_text.with_ansi_string(sub_help_text);
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std::map<std::string, help_text*> sql_funcs;
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std::map<std::string, help_text*> sql_keywords;
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for (const auto& iter : sqlite_function_help) {
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switch (iter.second->ht_context) {
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case help_context_t::HC_SQL_FUNCTION:
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case help_context_t::HC_SQL_TABLE_VALUED_FUNCTION:
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sql_funcs[iter.second->ht_name] = iter.second;
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break;
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case help_context_t::HC_SQL_KEYWORD:
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sql_keywords[iter.second->ht_name] = iter.second;
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break;
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default:
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break;
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}
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}
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for (const auto& iter : sql_funcs) {
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all_help_text.append(2, '\n');
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format_help_text_for_term(*iter.second, 79, all_help_text);
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if (!iter.second->ht_example.empty()) {
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all_help_text.append(1, '\n');
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format_example_text_for_term(
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*iter.second, eval_example, 90, all_help_text);
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}
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}
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for (const auto& iter : sql_keywords) {
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all_help_text.append(2, '\n');
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format_help_text_for_term(*iter.second, 79, all_help_text);
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if (!iter.second->ht_example.empty()) {
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all_help_text.append(1, '\n');
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format_example_text_for_term(
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*iter.second, eval_example, 79, all_help_text);
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}
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}
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lnav_data.ld_help_source.replace_with(all_help_text);
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lnav_data.ld_views[LNV_HELP].redo_search();
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}
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void
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layout_views()
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{
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unsigned long width, height;
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getmaxyx(lnav_data.ld_window, height, width);
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int doc_height;
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bool doc_side_by_side = width > (90 + 60);
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bool preview_status_open
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= !lnav_data.ld_preview_status_source.get_description().empty();
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bool filter_status_open = false;
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lnav_data.ld_view_stack.top() | [&](auto tc) {
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text_sub_source* tss = tc->get_sub_source();
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if (tss == nullptr) {
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return;
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}
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if (tss->tss_supports_filtering) {
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filter_status_open = true;
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}
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};
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if (doc_side_by_side) {
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doc_height = std::max(lnav_data.ld_doc_source.text_line_count(),
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lnav_data.ld_example_source.text_line_count());
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} else {
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doc_height = lnav_data.ld_doc_source.text_line_count()
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+ lnav_data.ld_example_source.text_line_count();
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}
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int preview_height = lnav_data.ld_preview_hidden
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? 0
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: lnav_data.ld_preview_source.text_line_count();
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int match_rows = lnav_data.ld_match_source.text_line_count();
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int match_height = std::min((unsigned long) match_rows, (height - 4) / 2);
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lnav_data.ld_match_view.set_height(vis_line_t(match_height));
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if (doc_height + 14 > ((int) height - match_height - preview_height - 2)) {
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preview_height = 0;
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preview_status_open = false;
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}
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if (doc_height + 14 > ((int) height - match_height - 2)) {
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doc_height = lnav_data.ld_doc_source.text_line_count();
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if (doc_height + 14 > ((int) height - match_height - 2)) {
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doc_height = 0;
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}
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}
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bool doc_open = doc_height > 0;
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bool filters_open
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= (lnav_data.ld_mode == LNM_FILTER || lnav_data.ld_mode == LNM_FILES
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|| lnav_data.ld_mode == LNM_SEARCH_FILTERS
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|| lnav_data.ld_mode == LNM_SEARCH_FILES)
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&& !preview_status_open && !doc_open;
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int filter_height = filters_open ? 5 : 0;
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int bottom_height = (doc_open ? 1 : 0) + doc_height
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+ (preview_status_open ? 1 : 0) + preview_height + 1 // bottom status
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+ match_height + lnav_data.ld_rl_view->get_height();
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for (auto& tc : lnav_data.ld_views) {
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tc.set_height(vis_line_t(-(bottom_height + (filter_status_open ? 1 : 0)
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+ (filters_open ? 1 : 0) + filter_height)));
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}
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lnav_data.ld_status[LNS_TOP].set_enabled(!filters_open);
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lnav_data.ld_status[LNS_FILTER].set_visible(filter_status_open);
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lnav_data.ld_status[LNS_FILTER].set_enabled(filters_open);
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lnav_data.ld_status[LNS_FILTER].set_top(
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-(bottom_height + filter_height + 1 + (filters_open ? 1 : 0)));
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lnav_data.ld_status[LNS_FILTER_HELP].set_visible(filters_open);
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lnav_data.ld_status[LNS_FILTER_HELP].set_top(
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-(bottom_height + filter_height + 1));
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lnav_data.ld_status[LNS_BOTTOM].set_top(-(match_height + 2));
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lnav_data.ld_status[LNS_DOC].set_top(height - bottom_height);
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lnav_data.ld_status[LNS_DOC].set_visible(doc_open);
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lnav_data.ld_status[LNS_PREVIEW].set_top(height - bottom_height
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+ (doc_open ? 1 : 0) + doc_height);
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lnav_data.ld_status[LNS_PREVIEW].set_visible(preview_status_open);
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if (!doc_open || doc_side_by_side) {
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lnav_data.ld_doc_view.set_height(vis_line_t(doc_height));
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} else {
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lnav_data.ld_doc_view.set_height(
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vis_line_t(lnav_data.ld_doc_source.text_line_count()));
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}
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lnav_data.ld_doc_view.set_y(height - bottom_height + 1);
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if (!doc_open || doc_side_by_side) {
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lnav_data.ld_example_view.set_height(vis_line_t(doc_height));
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lnav_data.ld_example_view.set_x(doc_open ? 90 : 0);
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lnav_data.ld_example_view.set_y(height - bottom_height + 1);
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} else {
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lnav_data.ld_example_view.set_height(
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vis_line_t(lnav_data.ld_example_source.text_line_count()));
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lnav_data.ld_example_view.set_x(0);
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lnav_data.ld_example_view.set_y(
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height - bottom_height + lnav_data.ld_doc_view.get_height() + 1);
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}
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lnav_data.ld_filter_view.set_height(vis_line_t(filter_height));
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lnav_data.ld_filter_view.set_y(height - bottom_height - filter_height);
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lnav_data.ld_filter_view.set_width(width);
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lnav_data.ld_files_view.set_height(vis_line_t(filter_height));
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lnav_data.ld_files_view.set_y(height - bottom_height - filter_height);
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lnav_data.ld_files_view.set_width(width);
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lnav_data.ld_preview_view.set_height(vis_line_t(preview_height));
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lnav_data.ld_preview_view.set_y(height - bottom_height + 1
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+ (doc_open ? 1 : 0) + doc_height);
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lnav_data.ld_match_view.set_y(height - lnav_data.ld_rl_view->get_height()
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- match_height);
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lnav_data.ld_rl_view->set_width(width);
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}
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static std::unordered_map<std::string, attr_line_t> EXAMPLE_RESULTS;
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void
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execute_examples()
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{
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db_label_source& dls = lnav_data.ld_db_row_source;
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db_overlay_source& dos = lnav_data.ld_db_overlay;
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textview_curses& db_tc = lnav_data.ld_views[LNV_DB];
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for (auto& help_iter : sqlite_function_help) {
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struct help_text& ht = *(help_iter.second);
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for (auto& ex : ht.ht_example) {
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std::string alt_msg;
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attr_line_t result;
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if (!ex.he_cmd) {
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continue;
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}
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switch (ht.ht_context) {
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case help_context_t::HC_SQL_KEYWORD:
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case help_context_t::HC_SQL_INFIX:
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case help_context_t::HC_SQL_FUNCTION:
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case help_context_t::HC_SQL_TABLE_VALUED_FUNCTION: {
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exec_context ec;
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execute_sql(ec, ex.he_cmd, alt_msg);
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if (dls.dls_rows.size() == 1 && dls.dls_rows[0].size() == 1)
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{
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result.append(dls.dls_rows[0][0]);
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} else {
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attr_line_t al;
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dos.list_value_for_overlay(db_tc, 0, 1, 0_vl, al);
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result.append(al);
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for (int lpc = 0; lpc < (int) dls.text_line_count();
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lpc++) {
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al.clear();
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dls.text_value_for_line(
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db_tc, lpc, al.get_string(), false);
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dls.text_attrs_for_line(db_tc, lpc, al.get_attrs());
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std::replace(al.get_string().begin(),
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al.get_string().end(),
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'\n',
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' ');
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result.append("\n").append(al);
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}
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}
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EXAMPLE_RESULTS[ex.he_cmd] = result;
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log_debug("example: %s", ex.he_cmd);
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log_debug("example result: %s",
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result.get_string().c_str());
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break;
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}
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default:
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log_warning("Not executing example: %s", ex.he_cmd);
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break;
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}
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}
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}
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dls.clear();
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}
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attr_line_t
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eval_example(const help_text& ht, const help_example& ex)
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{
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auto iter = EXAMPLE_RESULTS.find(ex.he_cmd);
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if (iter != EXAMPLE_RESULTS.end()) {
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return iter->second;
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}
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return "";
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}
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bool
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toggle_view(textview_curses* toggle_tc)
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{
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textview_curses* tc = lnav_data.ld_view_stack.top().value_or(nullptr);
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bool retval = false;
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require(toggle_tc != nullptr);
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require(toggle_tc >= &lnav_data.ld_views[0]);
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require(toggle_tc < &lnav_data.ld_views[LNV__MAX]);
|
|
|
|
if (tc == toggle_tc) {
|
|
if (lnav_data.ld_view_stack.size() == 1) {
|
|
return false;
|
|
}
|
|
lnav_data.ld_last_view = tc;
|
|
lnav_data.ld_view_stack.pop_back();
|
|
} else {
|
|
if (toggle_tc == &lnav_data.ld_views[LNV_SCHEMA]) {
|
|
open_schema_view();
|
|
} else if (toggle_tc == &lnav_data.ld_views[LNV_PRETTY]) {
|
|
open_pretty_view();
|
|
} else if (toggle_tc == &lnav_data.ld_views[LNV_HISTOGRAM]) {
|
|
// Rebuild to reflect changes in marks.
|
|
rebuild_hist();
|
|
} else if (toggle_tc == &lnav_data.ld_views[LNV_HELP]) {
|
|
build_all_help_text();
|
|
}
|
|
lnav_data.ld_last_view = nullptr;
|
|
lnav_data.ld_view_stack.push_back(toggle_tc);
|
|
retval = true;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* Ensure that the view is on the top of the view stack.
|
|
*
|
|
* @param expected_tc The text view that should be on top.
|
|
* @return True if the view was already on the top of the stack.
|
|
*/
|
|
bool
|
|
ensure_view(textview_curses* expected_tc)
|
|
{
|
|
textview_curses* tc = lnav_data.ld_view_stack.top().value_or(nullptr);
|
|
bool retval = true;
|
|
|
|
if (tc != expected_tc) {
|
|
toggle_view(expected_tc);
|
|
retval = false;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
bool
|
|
ensure_view(lnav_view_t expected)
|
|
{
|
|
return ensure_view(&lnav_data.ld_views[expected]);
|
|
}
|
|
|
|
nonstd::optional<vis_line_t>
|
|
next_cluster(vis_line_t (bookmark_vector<vis_line_t>::*f)(vis_line_t) const,
|
|
const bookmark_type_t* bt,
|
|
const vis_line_t top)
|
|
{
|
|
textview_curses* tc = get_textview_for_mode(lnav_data.ld_mode);
|
|
vis_bookmarks& bm = tc->get_bookmarks();
|
|
bookmark_vector<vis_line_t>& bv = bm[bt];
|
|
bool top_is_marked = binary_search(bv.begin(), bv.end(), top);
|
|
vis_line_t last_top(top), new_top(top), tc_height;
|
|
unsigned long tc_width;
|
|
int hit_count = 0;
|
|
|
|
tc->get_dimensions(tc_height, tc_width);
|
|
|
|
while ((new_top = (bv.*f)(new_top)) != -1) {
|
|
int diff = new_top - last_top;
|
|
|
|
hit_count += 1;
|
|
if (!top_is_marked || diff > 1) {
|
|
return new_top;
|
|
}
|
|
if (hit_count > 1 && std::abs(new_top - top) >= tc_height) {
|
|
return vis_line_t(new_top - diff);
|
|
}
|
|
if (diff < -1) {
|
|
last_top = new_top;
|
|
while ((new_top = (bv.*f)(new_top)) != -1) {
|
|
if ((std::abs(last_top - new_top) > 1)
|
|
|| (hit_count > 1
|
|
&& (std::abs(top - new_top) >= tc_height)))
|
|
{
|
|
break;
|
|
}
|
|
last_top = new_top;
|
|
}
|
|
return last_top;
|
|
}
|
|
last_top = new_top;
|
|
}
|
|
|
|
if (last_top != top) {
|
|
return last_top;
|
|
}
|
|
|
|
return nonstd::nullopt;
|
|
}
|
|
|
|
bool
|
|
moveto_cluster(vis_line_t (bookmark_vector<vis_line_t>::*f)(vis_line_t) const,
|
|
const bookmark_type_t* bt,
|
|
vis_line_t top)
|
|
{
|
|
textview_curses* tc = get_textview_for_mode(lnav_data.ld_mode);
|
|
auto new_top = next_cluster(f, bt, top);
|
|
|
|
if (!new_top) {
|
|
new_top = next_cluster(
|
|
f, bt, tc->is_selectable() ? tc->get_selection() : tc->get_top());
|
|
}
|
|
if (new_top != -1) {
|
|
tc->get_sub_source()->get_location_history() |
|
|
[new_top](auto lh) { lh->loc_history_append(new_top.value()); };
|
|
|
|
if (tc->is_selectable()) {
|
|
tc->set_selection(new_top.value());
|
|
} else {
|
|
tc->set_top(new_top.value());
|
|
}
|
|
return true;
|
|
}
|
|
|
|
alerter::singleton().chime();
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
previous_cluster(const bookmark_type_t* bt, textview_curses* tc)
|
|
{
|
|
key_repeat_history& krh = lnav_data.ld_key_repeat_history;
|
|
vis_line_t height, initial_top;
|
|
unsigned long width;
|
|
|
|
if (tc->is_selectable()) {
|
|
initial_top = tc->get_selection();
|
|
} else {
|
|
initial_top = tc->get_top();
|
|
}
|
|
auto new_top
|
|
= next_cluster(&bookmark_vector<vis_line_t>::prev, bt, initial_top);
|
|
|
|
tc->get_dimensions(height, width);
|
|
if (krh.krh_count > 1 && initial_top < (krh.krh_start_line - (1.5 * height))
|
|
&& (!new_top || ((initial_top - new_top.value()) < height)))
|
|
{
|
|
bookmark_vector<vis_line_t>& bv = tc->get_bookmarks()[bt];
|
|
new_top = bv.next(std::max(0_vl, initial_top - height));
|
|
}
|
|
|
|
if (new_top) {
|
|
tc->get_sub_source()->get_location_history() |
|
|
[new_top](auto lh) { lh->loc_history_append(new_top.value()); };
|
|
|
|
if (tc->is_selectable()) {
|
|
tc->set_selection(new_top.value());
|
|
} else {
|
|
tc->set_top(new_top.value());
|
|
}
|
|
} else {
|
|
alerter::singleton().chime();
|
|
}
|
|
}
|
|
|
|
vis_line_t
|
|
search_forward_from(textview_curses* tc)
|
|
{
|
|
vis_line_t height,
|
|
retval = tc->is_selectable() ? tc->get_selection() : tc->get_top();
|
|
key_repeat_history& krh = lnav_data.ld_key_repeat_history;
|
|
unsigned long width;
|
|
|
|
tc->get_dimensions(height, width);
|
|
|
|
if (krh.krh_count > 1 && retval > (krh.krh_start_line + (1.5 * height))) {
|
|
retval += vis_line_t(0.90 * height);
|
|
}
|
|
|
|
return retval;
|
|
}
|