2021-10-02 07:13:14 +00:00
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#include <base/ReplxxLineReader.h>
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#include <base/errnoToString.h>
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2020-06-04 22:34:49 +00:00
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2021-06-30 18:01:50 +00:00
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#include <chrono>
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#include <cerrno>
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#include <cstring>
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2020-06-04 22:34:49 +00:00
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#include <unistd.h>
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#include <functional>
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2020-06-04 21:31:51 +00:00
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#include <sys/file.h>
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2020-12-01 10:34:34 +00:00
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <csignal>
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#include <dlfcn.h>
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#include <fcntl.h>
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#include <fstream>
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2021-02-02 19:07:23 +00:00
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#include <fmt/format.h>
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2020-06-04 22:34:49 +00:00
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namespace
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{
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/// Trim ending whitespace inplace
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void trim(String & s)
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{
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2021-11-07 08:02:40 +00:00
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s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char ch) { return !std::isspace(ch); }).base(), s.end());
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}
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2021-11-16 21:44:52 +00:00
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std::string getEditor()
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2021-11-16 18:07:33 +00:00
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{
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const char * editor = std::getenv("EDITOR");
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if (!editor || !*editor)
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editor = "vim";
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return editor;
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}
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2021-07-02 01:25:07 +00:00
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/// Copied from replxx::src/util.cxx::now_ms_str() under the terms of 3-clause BSD license of Replxx.
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/// Copyright (c) 2017-2018, Marcin Konarski (amok at codestation.org)
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/// Copyright (c) 2010, Salvatore Sanfilippo (antirez at gmail dot com)
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/// Copyright (c) 2010, Pieter Noordhuis (pcnoordhuis at gmail dot com)
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2021-07-02 05:51:53 +00:00
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std::string replxx_now_ms_str()
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2021-06-30 18:01:50 +00:00
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{
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std::chrono::milliseconds ms(std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()));
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time_t t = ms.count() / 1000;
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tm broken;
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if (!localtime_r(&t, &broken))
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{
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return std::string();
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}
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static int const BUFF_SIZE(32);
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char str[BUFF_SIZE];
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strftime(str, BUFF_SIZE, "%Y-%m-%d %H:%M:%S.", &broken);
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snprintf(str + sizeof("YYYY-mm-dd HH:MM:SS"), 5, "%03d", static_cast<int>(ms.count() % 1000));
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return str;
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}
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/// Convert from readline to replxx format.
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///
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/// replxx requires each history line to prepended with time line:
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///
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/// ### YYYY-MM-DD HH:MM:SS.SSS
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/// select 1
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///
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/// And w/o those service lines it will load all lines from history file as
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/// one history line for suggestion. And if there are lots of lines in file it
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/// will take lots of time (getline() + tons of reallocations).
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///
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/// NOTE: this code uses std::ifstream/std::ofstream like original replxx code.
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void convertHistoryFile(const std::string & path, replxx::Replxx & rx)
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{
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std::ifstream in(path);
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if (!in)
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{
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rx.print("Cannot open %s reading (for conversion): %s\n",
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path.c_str(), errnoToString(errno).c_str());
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return;
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}
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std::string line;
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2021-07-20 18:00:53 +00:00
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if (getline(in, line).bad())
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2021-06-30 18:01:50 +00:00
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{
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rx.print("Cannot read from %s (for conversion): %s\n",
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path.c_str(), errnoToString(errno).c_str());
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return;
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}
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/// This is the marker of the date, no need to convert.
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static char const REPLXX_TIMESTAMP_PATTERN[] = "### dddd-dd-dd dd:dd:dd.ddd";
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2021-07-20 18:00:53 +00:00
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if (line.empty() || (line.starts_with("### ") && line.size() == strlen(REPLXX_TIMESTAMP_PATTERN)))
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2021-06-30 18:01:50 +00:00
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{
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return;
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}
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std::vector<std::string> lines;
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in.seekg(0);
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while (getline(in, line).good())
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{
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lines.push_back(line);
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}
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in.close();
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size_t lines_size = lines.size();
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std::sort(lines.begin(), lines.end());
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lines.erase(std::unique(lines.begin(), lines.end()), lines.end());
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rx.print("The history file (%s) is in old format. %zu lines, %zu unique lines.\n",
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path.c_str(), lines_size, lines.size());
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std::ofstream out(path);
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if (!out)
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{
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rx.print("Cannot open %s for writing (for conversion): %s\n",
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path.c_str(), errnoToString(errno).c_str());
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return;
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}
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const std::string & timestamp = replxx_now_ms_str();
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for (const auto & out_line : lines)
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{
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out << "### " << timestamp << "\n" << out_line << std::endl;
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}
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out.close();
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}
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2020-06-04 22:34:49 +00:00
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}
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2022-01-28 15:14:54 +00:00
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bool replxx_last_is_delimiter = false;
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2020-06-04 22:34:49 +00:00
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ReplxxLineReader::ReplxxLineReader(
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2022-01-18 18:03:51 +00:00
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Suggest & suggest,
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2020-06-04 22:45:04 +00:00
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const String & history_file_path_,
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bool multiline_,
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Patterns extenders_,
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Patterns delimiters_,
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replxx::Replxx::highlighter_callback_t highlighter_)
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: LineReader(history_file_path_, multiline_, std::move(extenders_), std::move(delimiters_)), highlighter(std::move(highlighter_))
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2021-11-16 21:44:52 +00:00
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, editor(getEditor())
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2020-06-04 22:34:49 +00:00
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{
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using namespace std::placeholders;
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using Replxx = replxx::Replxx;
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if (!history_file_path.empty())
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2020-06-04 21:31:51 +00:00
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{
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history_file_fd = open(history_file_path.c_str(), O_RDWR);
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2020-06-04 22:10:22 +00:00
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if (history_file_fd < 0)
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{
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2020-06-07 17:29:34 +00:00
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rx.print("Open of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-04 22:10:22 +00:00
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}
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2020-06-06 09:49:15 +00:00
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else
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2020-06-04 22:10:22 +00:00
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{
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2021-06-30 18:01:50 +00:00
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convertHistoryFile(history_file_path, rx);
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2020-06-06 09:49:15 +00:00
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if (flock(history_file_fd, LOCK_SH))
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{
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2020-06-07 17:29:34 +00:00
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rx.print("Shared lock of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-06 09:49:15 +00:00
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}
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else
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{
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2020-10-12 20:39:00 +00:00
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if (!rx.history_load(history_file_path))
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{
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2020-12-17 18:08:42 +00:00
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rx.print("Loading history failed: %s\n", errnoToString(errno).c_str());
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2020-10-12 20:39:00 +00:00
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}
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2020-06-06 09:49:15 +00:00
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if (flock(history_file_fd, LOCK_UN))
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{
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2020-06-07 17:29:34 +00:00
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rx.print("Unlock of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-06 09:49:15 +00:00
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}
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}
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2020-06-04 22:10:22 +00:00
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}
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2020-06-04 21:31:51 +00:00
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}
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2020-06-04 22:34:49 +00:00
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2020-12-11 16:34:40 +00:00
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rx.install_window_change_handler();
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2020-06-04 22:34:49 +00:00
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auto callback = [&suggest] (const String & context, size_t context_size)
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{
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2022-01-24 20:04:48 +00:00
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return suggest.getCompletions(context, context_size);
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2020-06-04 22:34:49 +00:00
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};
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rx.set_completion_callback(callback);
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rx.set_complete_on_empty(false);
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rx.set_word_break_characters(word_break_characters);
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2022-01-28 21:05:14 +00:00
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rx.set_ignore_case(true);
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2020-06-04 22:34:49 +00:00
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2020-06-04 22:45:04 +00:00
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if (highlighter)
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rx.set_highlighter_callback(highlighter);
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2020-06-04 22:34:49 +00:00
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/// By default C-p/C-n binded to COMPLETE_NEXT/COMPLETE_PREV,
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/// bind C-p/C-n to history-previous/history-next like readline.
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rx.bind_key(Replxx::KEY::control('N'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::HISTORY_NEXT, code); });
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rx.bind_key(Replxx::KEY::control('P'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::HISTORY_PREVIOUS, code); });
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2021-10-14 15:56:28 +00:00
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2021-11-07 08:02:40 +00:00
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auto commit_action = [this](char32_t code)
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{
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/// If we allow multiline and there is already something in the input, start a newline.
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2022-01-28 19:13:01 +00:00
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/// NOTE: Lexer is only available if we use highlighter.
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if (highlighter && multiline && !replxx_last_is_delimiter)
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2021-11-07 08:02:40 +00:00
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return rx.invoke(Replxx::ACTION::NEW_LINE, code);
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2022-01-28 15:14:54 +00:00
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replxx_last_is_delimiter = false;
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2021-11-07 08:02:40 +00:00
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return rx.invoke(Replxx::ACTION::COMMIT_LINE, code);
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};
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2021-10-14 15:56:28 +00:00
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/// bind C-j to ENTER action.
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2021-11-07 08:02:40 +00:00
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rx.bind_key(Replxx::KEY::control('J'), commit_action);
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rx.bind_key(Replxx::KEY::ENTER, commit_action);
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2021-10-14 15:56:28 +00:00
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2020-06-04 22:34:49 +00:00
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/// By default COMPLETE_NEXT/COMPLETE_PREV was binded to C-p/C-n, re-bind
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/// to M-P/M-N (that was used for HISTORY_COMMON_PREFIX_SEARCH before, but
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/// it also binded to M-p/M-n).
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rx.bind_key(Replxx::KEY::meta('N'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::COMPLETE_NEXT, code); });
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rx.bind_key(Replxx::KEY::meta('P'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::COMPLETE_PREVIOUS, code); });
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2021-05-02 20:22:54 +00:00
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/// By default M-BACKSPACE is KILL_TO_WHITESPACE_ON_LEFT, while in readline it is backward-kill-word
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rx.bind_key(Replxx::KEY::meta(Replxx::KEY::BACKSPACE), [this](char32_t code) { return rx.invoke(Replxx::ACTION::KILL_TO_BEGINING_OF_WORD, code); });
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/// By default C-w is KILL_TO_BEGINING_OF_WORD, while in readline it is unix-word-rubout
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rx.bind_key(Replxx::KEY::control('W'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::KILL_TO_WHITESPACE_ON_LEFT, code); });
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2020-12-01 10:34:34 +00:00
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rx.bind_key(Replxx::KEY::meta('E'), [this](char32_t) { openEditor(); return Replxx::ACTION_RESULT::CONTINUE; });
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2020-06-04 22:34:49 +00:00
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}
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ReplxxLineReader::~ReplxxLineReader()
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{
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2020-06-04 22:36:40 +00:00
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if (close(history_file_fd))
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2020-12-17 18:08:42 +00:00
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rx.print("Close of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-04 22:34:49 +00:00
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}
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LineReader::InputStatus ReplxxLineReader::readOneLine(const String & prompt)
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{
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input.clear();
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const char* cinput = rx.input(prompt);
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if (cinput == nullptr)
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return (errno != EAGAIN) ? ABORT : RESET_LINE;
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input = cinput;
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trim(input);
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return INPUT_LINE;
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}
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void ReplxxLineReader::addToHistory(const String & line)
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{
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2020-06-04 21:31:51 +00:00
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// locking history file to prevent from inconsistent concurrent changes
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2020-07-29 18:00:46 +00:00
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//
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// replxx::Replxx::history_save() already has lockf(),
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// but replxx::Replxx::history_load() does not
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// and that is why flock() is added here.
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2020-06-06 09:51:42 +00:00
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bool locked = false;
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2020-06-04 22:10:22 +00:00
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if (flock(history_file_fd, LOCK_EX))
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2020-12-17 18:08:42 +00:00
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rx.print("Lock of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-06 09:51:42 +00:00
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else
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locked = true;
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2020-06-04 21:31:51 +00:00
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2020-06-04 22:34:49 +00:00
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rx.history_add(line);
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2020-06-04 21:31:51 +00:00
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// flush changes to the disk
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2020-10-12 20:39:00 +00:00
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if (!rx.history_save(history_file_path))
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2020-12-17 18:08:42 +00:00
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rx.print("Saving history failed: %s\n", errnoToString(errno).c_str());
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2020-06-04 21:31:51 +00:00
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2020-06-06 09:51:42 +00:00
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if (locked && 0 != flock(history_file_fd, LOCK_UN))
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2020-12-17 18:08:42 +00:00
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rx.print("Unlock of history file failed: %s\n", errnoToString(errno).c_str());
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2020-06-04 22:34:49 +00:00
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}
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2021-11-16 18:07:33 +00:00
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/// See comments in ShellCommand::executeImpl()
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/// (for the vfork via dlsym())
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2021-11-16 18:07:33 +00:00
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int ReplxxLineReader::executeEditor(const std::string & path)
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2020-12-01 10:34:34 +00:00
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{
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2021-11-16 18:07:33 +00:00
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std::vector<char> argv0(editor.data(), editor.data() + editor.size() + 1);
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std::vector<char> argv1(path.data(), path.data() + path.size() + 1);
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char * const argv[] = {argv0.data(), argv1.data(), nullptr};
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2020-12-01 10:34:34 +00:00
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static void * real_vfork = dlsym(RTLD_DEFAULT, "vfork");
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if (!real_vfork)
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2020-12-01 12:48:35 +00:00
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{
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2020-12-05 08:52:25 +00:00
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rx.print("Cannot find symbol vfork in myself: %s\n", errnoToString(errno).c_str());
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2020-12-01 10:34:34 +00:00
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return -1;
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2020-12-01 12:48:35 +00:00
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}
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2020-12-01 10:34:34 +00:00
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pid_t pid = reinterpret_cast<pid_t (*)()>(real_vfork)();
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if (-1 == pid)
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2020-12-01 12:48:35 +00:00
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{
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rx.print("Cannot vfork: %s\n", errnoToString(errno).c_str());
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2020-12-01 10:34:34 +00:00
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return -1;
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2020-12-01 12:48:35 +00:00
|
|
|
}
|
2020-12-01 10:34:34 +00:00
|
|
|
|
2021-11-16 18:07:33 +00:00
|
|
|
/// Child
|
2020-12-01 10:34:34 +00:00
|
|
|
if (0 == pid)
|
|
|
|
{
|
|
|
|
sigset_t mask;
|
|
|
|
sigemptyset(&mask);
|
|
|
|
sigprocmask(0, nullptr, &mask);
|
|
|
|
sigprocmask(SIG_UNBLOCK, &mask, nullptr);
|
|
|
|
|
2021-11-16 18:07:33 +00:00
|
|
|
execvp(editor.c_str(), argv);
|
|
|
|
rx.print("Cannot execute %s: %s\n", editor.c_str(), errnoToString(errno).c_str());
|
2020-12-01 10:34:34 +00:00
|
|
|
_exit(-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
int status = 0;
|
2021-11-16 21:44:52 +00:00
|
|
|
do
|
|
|
|
{
|
2021-11-16 18:07:33 +00:00
|
|
|
int exited_pid = waitpid(pid, &status, 0);
|
|
|
|
if (exited_pid == -1)
|
|
|
|
{
|
|
|
|
if (errno == EINTR)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
rx.print("Cannot waitpid: %s\n", errnoToString(errno).c_str());
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
} while (true);
|
2020-12-01 10:34:34 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ReplxxLineReader::openEditor()
|
|
|
|
{
|
2020-12-05 08:52:25 +00:00
|
|
|
char filename[] = "clickhouse_replxx_XXXXXX.sql";
|
|
|
|
int fd = ::mkstemps(filename, 4);
|
2020-12-01 10:34:34 +00:00
|
|
|
if (-1 == fd)
|
2020-12-01 12:48:35 +00:00
|
|
|
{
|
|
|
|
rx.print("Cannot create temporary file to edit query: %s\n", errnoToString(errno).c_str());
|
2020-12-01 10:34:34 +00:00
|
|
|
return;
|
2020-12-01 12:48:35 +00:00
|
|
|
}
|
2020-12-01 13:28:55 +00:00
|
|
|
|
2020-12-01 10:34:34 +00:00
|
|
|
replxx::Replxx::State state(rx.get_state());
|
2020-12-02 02:25:22 +00:00
|
|
|
|
|
|
|
size_t bytes_written = 0;
|
|
|
|
const char * begin = state.text();
|
|
|
|
size_t offset = strlen(state.text());
|
|
|
|
while (bytes_written != offset)
|
|
|
|
{
|
|
|
|
ssize_t res = ::write(fd, begin + bytes_written, offset - bytes_written);
|
|
|
|
if ((-1 == res || 0 == res) && errno != EINTR)
|
|
|
|
{
|
|
|
|
rx.print("Cannot write to temporary query file %s: %s\n", filename, errnoToString(errno).c_str());
|
2021-02-02 19:07:23 +00:00
|
|
|
break;
|
2020-12-02 02:25:22 +00:00
|
|
|
}
|
|
|
|
bytes_written += res;
|
|
|
|
}
|
|
|
|
|
2020-12-01 10:34:34 +00:00
|
|
|
if (0 != ::close(fd))
|
2020-12-01 12:48:35 +00:00
|
|
|
{
|
2020-12-01 13:28:55 +00:00
|
|
|
rx.print("Cannot close temporary query file %s: %s\n", filename, errnoToString(errno).c_str());
|
2020-12-01 10:34:34 +00:00
|
|
|
return;
|
2020-12-01 12:48:35 +00:00
|
|
|
}
|
2020-12-01 13:28:55 +00:00
|
|
|
|
2021-11-16 18:07:33 +00:00
|
|
|
if (0 == executeEditor(filename))
|
2020-12-01 10:34:34 +00:00
|
|
|
{
|
2020-12-05 08:52:25 +00:00
|
|
|
try
|
|
|
|
{
|
|
|
|
std::ifstream t(filename);
|
|
|
|
std::string str;
|
|
|
|
t.seekg(0, std::ios::end);
|
|
|
|
str.reserve(t.tellg());
|
|
|
|
t.seekg(0, std::ios::beg);
|
|
|
|
str.assign((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
|
|
|
|
rx.set_state(replxx::Replxx::State(str.c_str(), str.size()));
|
|
|
|
}
|
|
|
|
catch (...)
|
|
|
|
{
|
|
|
|
rx.print("Cannot read from temporary query file %s: %s\n", filename, errnoToString(errno).c_str());
|
|
|
|
return;
|
|
|
|
}
|
2020-12-01 10:34:34 +00:00
|
|
|
}
|
2020-12-01 13:28:55 +00:00
|
|
|
|
2020-12-01 10:34:34 +00:00
|
|
|
if (bracketed_paste_enabled)
|
|
|
|
enableBracketedPaste();
|
2020-12-01 13:28:55 +00:00
|
|
|
|
|
|
|
if (0 != ::unlink(filename))
|
|
|
|
rx.print("Cannot remove temporary query file %s: %s\n", filename, errnoToString(errno).c_str());
|
2020-12-01 10:34:34 +00:00
|
|
|
}
|
|
|
|
|
2020-06-04 22:34:49 +00:00
|
|
|
void ReplxxLineReader::enableBracketedPaste()
|
|
|
|
{
|
2020-12-01 10:34:34 +00:00
|
|
|
bracketed_paste_enabled = true;
|
2020-06-04 22:34:49 +00:00
|
|
|
rx.enable_bracketed_paste();
|
|
|
|
};
|