mirror of https://github.com/tstack/lnav
[sqlite] implement .dump SQL command
Timothy Stack
3 years ago
parent
6f4791ec35
commit
c0ed59e61e
@ -0,0 +1,121 @@
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/**
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* Copyright (c) 2021, 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
|
||||
* 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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#include "config.h"
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#include "time_util.hh"
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#include "humanize.time.hh"
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namespace humanize {
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namespace time {
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std::string time_ago(time_t last_time, bool convert_local)
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{
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time_t delta, current_time = ::time(nullptr);
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const char *fmt;
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char buffer[64];
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int amount;
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if (convert_local) {
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current_time = convert_log_time_to_local(current_time);
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}
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delta = current_time - last_time;
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if (delta < 0) {
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return "in the future";
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} else if (delta < 60) {
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return "just now";
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} else if (delta < (60 * 2)) {
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return "one minute ago";
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} else if (delta < (60 * 60)) {
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fmt = "%d minutes ago";
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amount = delta / 60;
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} else if (delta < (2 * 60 * 60)) {
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return "one hour ago";
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} else if (delta < (24 * 60 * 60)) {
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fmt = "%d hours ago";
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amount = delta / (60 * 60);
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} else if (delta < (2 * 24 * 60 * 60)) {
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return "one day ago";
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} else if (delta < (365 * 24 * 60 * 60)) {
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fmt = "%d days ago";
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amount = delta / (24 * 60 * 60);
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} else if (delta < (2 * 365 * 24 * 60 * 60)) {
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return "over a year ago";
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} else {
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fmt = "over %d years ago";
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amount = delta / (365 * 24 * 60 * 60);
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}
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snprintf(buffer, sizeof(buffer), fmt, amount);
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return std::string(buffer);
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}
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std::string precise_time_ago(const struct timeval &tv, bool convert_local)
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{
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struct timeval now, diff;
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gettimeofday(&now, nullptr);
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if (convert_local) {
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now.tv_sec = convert_log_time_to_local(now.tv_sec);
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}
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timersub(&now, &tv, &diff);
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if (diff.tv_sec < 0) {
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return time_ago(tv.tv_sec);
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} else if (diff.tv_sec <= 1) {
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return "a second ago";
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} else if (diff.tv_sec < (10 * 60)) {
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char buf[64];
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if (diff.tv_sec < 60) {
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snprintf(buf, sizeof(buf),
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"%2ld seconds ago",
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diff.tv_sec);
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} else {
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time_t seconds = diff.tv_sec % 60;
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time_t minutes = diff.tv_sec / 60;
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snprintf(buf, sizeof(buf),
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"%2ld minute%s and %2ld second%s ago",
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minutes,
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minutes > 1 ? "s" : "",
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seconds,
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seconds == 1 ? "" : "s");
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}
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return std::string(buf);
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} else {
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return time_ago(tv.tv_sec, convert_local);
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}
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}
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}
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}
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@ -0,0 +1,17 @@
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#ifndef lnav_humanize_time_hh
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#define lnav_humanize_time_hh
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#include <string>
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namespace humanize {
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namespace time {
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std::string time_ago(time_t last_time, bool convert_local = false);
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std::string precise_time_ago(const struct timeval &tv, bool convert_local = false);
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}
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}
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#endif
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@ -0,0 +1,257 @@
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/**
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* Copyright (c) 2021, 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,
|
||||
* 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
|
||||
* 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
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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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#include "config.h"
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#include "base/lnav_log.hh"
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#include "lnav.hh"
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#include "lnav_util.hh"
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#include "bound_tags.hh"
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#include "base/injector.bind.hh"
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#include "readline_curses.hh"
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#include "sqlite-extension-func.hh"
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static
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Result<std::string, std::string> sql_cmd_dump(
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exec_context &ec, std::string cmdline, std::vector<std::string> &args)
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{
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std::string retval;
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if (args.empty()) {
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args.emplace_back("filename");
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args.emplace_back("tables");
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return Ok(retval);
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}
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if (args.size() < 2) {
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return ec.make_error("expecting a file name to write to");
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}
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auto_mem<FILE> file(fclose);
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if ((file = fopen(args[1].c_str(), "w+")) == nullptr) {
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return ec.make_error("unable to open '{}' for writing: {}",
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args[1], strerror(errno));
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}
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for (size_t lpc = 2; lpc < args.size(); lpc++) {
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sqlite3_db_dump(lnav_data.ld_db.in(),
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"main",
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args[lpc].c_str(),
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(int (*)(const char *, void*)) fputs,
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file.in());
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}
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retval = "generated";
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return Ok(retval);
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}
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static
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Result<std::string, std::string> sql_cmd_read(
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exec_context &ec, std::string cmdline, std::vector<std::string> &args)
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{
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std::string retval;
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if (args.empty()) {
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args.emplace_back("filename");
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return Ok(retval);
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}
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std::vector<std::string> split_args;
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shlex lexer(cmdline);
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if (!lexer.split(split_args, ec.create_resolver())) {
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return ec.make_error("unable to parse arguments");
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}
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for (size_t lpc = 1; lpc < split_args.size(); lpc++) {
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auto read_res = read_file(split_args[lpc]);
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if (read_res.isErr()) {
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return ec.make_error("unable to read script file: {} -- {}",
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split_args[lpc],
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read_res.unwrapErr());
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}
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auto script = read_res.unwrap();
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auto_mem<sqlite3_stmt> stmt(sqlite3_finalize);
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const char *start = script.c_str();
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do {
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const char *tail;
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auto rc = sqlite3_prepare_v2(lnav_data.ld_db.in(),
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start,
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-1,
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stmt.out(),
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&tail);
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if (rc != SQLITE_OK) {
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const char *errmsg = sqlite3_errmsg(lnav_data.ld_db);
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return ec.make_error("{}", errmsg);
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}
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if (stmt.in() != nullptr) {
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std::string alt_msg;
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auto exec_res = execute_sql(ec,
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std::string(start, tail - start),
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alt_msg);
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if (exec_res.isErr()) {
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return exec_res;
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}
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}
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start = tail;
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} while (start[0]);
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}
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if (lnav_data.ld_flags & LNF_HEADLESS) {
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if (ec.ec_local_vars.size() == 1) {
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ensure_view(&lnav_data.ld_views[LNV_DB]);
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}
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} else if (lnav_data.ld_db_row_source.dls_rows.size() > 1) {
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ensure_view(&lnav_data.ld_views[LNV_DB]);
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}
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return Ok(retval);
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}
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static
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Result<std::string, std::string> sql_cmd_schema(
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exec_context &ec, std::string cmdline, std::vector<std::string> &args)
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{
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std::string retval;
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if (args.empty()) {
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return Ok(retval);
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}
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ensure_view(&lnav_data.ld_views[LNV_SCHEMA]);
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return Ok(retval);
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}
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static
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Result<std::string, std::string> sql_cmd_generic(
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exec_context &ec, std::string cmdline, std::vector<std::string> &args)
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{
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std::string retval;
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if (args.empty()) {
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args.emplace_back("*");
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return Ok(retval);
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}
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return Ok(retval);
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}
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static readline_context::command_t sql_commands[] = {
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{
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".dump",
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sql_cmd_dump,
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help_text(".dump",
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"Dump the contents of the database")
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.sql_command()
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.with_parameter({"path", "The path to the file to write"})
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.with_tags({"io",}),
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},
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{
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".msgformats",
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sql_cmd_schema,
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help_text(".msgformats", "df")
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.sql_command(),
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},
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{
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".read",
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sql_cmd_read,
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help_text(".read",
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"Switch to the SCHEMA view that contains a dump of the "
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"current database schema")
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.sql_command(),
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},
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{
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".schema",
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sql_cmd_schema,
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help_text(".schema",
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"Switch to the SCHEMA view that contains a dump of the "
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"current database schema")
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.sql_command(),
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},
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{
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"ATTACH",
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sql_cmd_generic,
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},
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{
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"CREATE",
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sql_cmd_generic,
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},
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{
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"DELETE",
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sql_cmd_generic,
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},
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{
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"DETACH",
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sql_cmd_generic,
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},
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{
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"DROP",
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sql_cmd_generic,
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},
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{
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"INSERT",
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sql_cmd_generic,
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},
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{
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"SELECT",
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sql_cmd_generic,
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},
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{
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"UPDATE",
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sql_cmd_generic,
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},
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{
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"WITH",
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sql_cmd_generic,
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},
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};
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static readline_context::command_map_t sql_cmd_map;
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static auto bound_sql_cmd_map = injector::bind<
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readline_context::command_map_t, sql_cmd_map_tag>::to_instance(+[]() {
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for (auto& cmd : sql_commands) {
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sql_cmd_map[cmd.c_name] = &cmd;
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}
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return &sql_cmd_map;
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});
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template<>
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void injector::force_linking(sql_cmd_map_tag anno)
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{
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}
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@ -0,0 +1,726 @@
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/*
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** 2016-03-13
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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******************************************************************************
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**
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** This file implements a C-language subroutine that converts the content
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** of an SQLite database into UTF-8 text SQL statements that can be used
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** to exactly recreate the original database. ROWID values are preserved.
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**
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** A prototype of the implemented subroutine is this:
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**
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** int sqlite3_db_dump(
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** sqlite3 *db,
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** const char *zSchema,
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** const char *zTable,
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** void (*xCallback)(void*, const char*),
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** void *pArg
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** );
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**
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** The db parameter is the database connection. zSchema is the schema within
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** that database which is to be dumped. Usually the zSchema is "main" but
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** can also be "temp" or any ATTACH-ed database. If zTable is not NULL, then
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** only the content of that one table is dumped. If zTable is NULL, then all
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** tables are dumped.
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**
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** The generate text is passed to xCallback() in multiple calls. The second
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** argument to xCallback() is a copy of the pArg parameter. The first
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** argument is some of the output text that this routine generates. The
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** signature to xCallback() is designed to make it compatible with fputs().
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**
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** The sqlite3_db_dump() subroutine returns SQLITE_OK on success or some error
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** code if it encounters a problem.
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**
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** If this file is compiled with -DDBDUMP_STANDALONE then a "main()" routine
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** is included so that this routine becomes a command-line utility. The
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** command-line utility takes two or three arguments which are the name
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** of the database file, the schema, and optionally the table, forming the
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** first three arguments of a single call to the library routine.
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*/
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#include "sqlite3.h"
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#include <stdarg.h>
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#include <string.h>
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#include <ctype.h>
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/*
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** The state of the dump process.
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*/
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typedef struct DState DState;
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struct DState {
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sqlite3 *db; /* The database connection */
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int nErr; /* Number of errors seen so far */
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int rc; /* Error code */
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int writableSchema; /* True if in writable_schema mode */
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int (*xCallback)(const char*,void*); /* Send output here */
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void *pArg; /* Argument to xCallback() */
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};
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/*
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** A variable length string to which one can append text.
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*/
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typedef struct DText DText;
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struct DText {
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char *z; /* The text */
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int n; /* Number of bytes of content in z[] */
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int nAlloc; /* Number of bytes allocated to z[] */
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};
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/*
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** Initialize and destroy a DText object
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*/
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static void initText(DText *p){
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memset(p, 0, sizeof(*p));
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}
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static void freeText(DText *p){
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sqlite3_free(p->z);
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initText(p);
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}
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/* zIn is either a pointer to a NULL-terminated string in memory obtained
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** from malloc(), or a NULL pointer. The string pointed to by zAppend is
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** added to zIn, and the result returned in memory obtained from malloc().
|
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** zIn, if it was not NULL, is freed.
|
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**
|
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** If the third argument, quote, is not '\0', then it is used as a
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** quote character for zAppend.
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*/
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static void appendText(DText *p, char const *zAppend, char quote){
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int len;
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int i;
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int nAppend = (int)(strlen(zAppend) & 0x3fffffff);
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len = nAppend+p->n+1;
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if( quote ){
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len += 2;
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for(i=0; i<nAppend; i++){
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if( zAppend[i]==quote ) len++;
|
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}
|
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}
|
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|
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if( p->n+len>=p->nAlloc ){
|
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char *zNew;
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p->nAlloc = p->nAlloc*2 + len + 20;
|
||||
zNew = sqlite3_realloc(p->z, p->nAlloc);
|
||||
if( zNew==0 ){
|
||||
freeText(p);
|
||||
return;
|
||||
}
|
||||
p->z = zNew;
|
||||
}
|
||||
|
||||
if( quote ){
|
||||
char *zCsr = p->z+p->n;
|
||||
*zCsr++ = quote;
|
||||
for(i=0; i<nAppend; i++){
|
||||
*zCsr++ = zAppend[i];
|
||||
if( zAppend[i]==quote ) *zCsr++ = quote;
|
||||
}
|
||||
*zCsr++ = quote;
|
||||
p->n = (int)(zCsr - p->z);
|
||||
*zCsr = '\0';
|
||||
}else{
|
||||
memcpy(p->z+p->n, zAppend, nAppend);
|
||||
p->n += nAppend;
|
||||
p->z[p->n] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** Attempt to determine if identifier zName needs to be quoted, either
|
||||
** because it contains non-alphanumeric characters, or because it is an
|
||||
** SQLite keyword. Be conservative in this estimate: When in doubt assume
|
||||
** that quoting is required.
|
||||
**
|
||||
** Return '"' if quoting is required. Return 0 if no quoting is required.
|
||||
*/
|
||||
static char quoteChar(const char *zName){
|
||||
int i;
|
||||
if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"';
|
||||
for(i=0; zName[i]; i++){
|
||||
if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"';
|
||||
}
|
||||
return sqlite3_keyword_check(zName, i) ? '"' : 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Release memory previously allocated by tableColumnList().
|
||||
*/
|
||||
static void freeColumnList(char **azCol){
|
||||
int i;
|
||||
for(i=1; azCol[i]; i++){
|
||||
sqlite3_free(azCol[i]);
|
||||
}
|
||||
/* azCol[0] is a static string */
|
||||
sqlite3_free(azCol);
|
||||
}
|
||||
|
||||
/*
|
||||
** Return a list of pointers to strings which are the names of all
|
||||
** columns in table zTab. The memory to hold the names is dynamically
|
||||
** allocated and must be released by the caller using a subsequent call
|
||||
** to freeColumnList().
|
||||
**
|
||||
** The azCol[0] entry is usually NULL. However, if zTab contains a rowid
|
||||
** value that needs to be preserved, then azCol[0] is filled in with the
|
||||
** name of the rowid column.
|
||||
**
|
||||
** The first regular column in the table is azCol[1]. The list is terminated
|
||||
** by an entry with azCol[i]==0.
|
||||
*/
|
||||
static char **tableColumnList(DState *p, const char *zTab){
|
||||
char **azCol = 0;
|
||||
sqlite3_stmt *pStmt = 0;
|
||||
char *zSql;
|
||||
int nCol = 0;
|
||||
int nAlloc = 0;
|
||||
int nPK = 0; /* Number of PRIMARY KEY columns seen */
|
||||
int isIPK = 0; /* True if one PRIMARY KEY column of type INTEGER */
|
||||
int preserveRowid = 1;
|
||||
int rc;
|
||||
|
||||
zSql = sqlite3_mprintf("PRAGMA table_info=%Q", zTab);
|
||||
if( zSql==0 ) return 0;
|
||||
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
|
||||
sqlite3_free(zSql);
|
||||
if( rc ) return 0;
|
||||
while( sqlite3_step(pStmt)==SQLITE_ROW ){
|
||||
if( nCol>=nAlloc-2 ){
|
||||
char **azNew;
|
||||
nAlloc = nAlloc*2 + nCol + 10;
|
||||
azNew = sqlite3_realloc64(azCol, nAlloc*sizeof(azCol[0]));
|
||||
if( azNew==0 ) goto col_oom;
|
||||
azCol = azNew;
|
||||
azCol[0] = 0;
|
||||
}
|
||||
azCol[++nCol] = sqlite3_mprintf("%s", sqlite3_column_text(pStmt, 1));
|
||||
if( azCol[nCol]==0 ) goto col_oom;
|
||||
if( sqlite3_column_int(pStmt, 5) ){
|
||||
nPK++;
|
||||
if( nPK==1
|
||||
&& sqlite3_stricmp((const char*)sqlite3_column_text(pStmt,2),
|
||||
"INTEGER")==0
|
||||
){
|
||||
isIPK = 1;
|
||||
}else{
|
||||
isIPK = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
sqlite3_finalize(pStmt);
|
||||
pStmt = 0;
|
||||
azCol[nCol+1] = 0;
|
||||
|
||||
/* The decision of whether or not a rowid really needs to be preserved
|
||||
** is tricky. We never need to preserve a rowid for a WITHOUT ROWID table
|
||||
** or a table with an INTEGER PRIMARY KEY. We are unable to preserve
|
||||
** rowids on tables where the rowid is inaccessible because there are other
|
||||
** columns in the table named "rowid", "_rowid_", and "oid".
|
||||
*/
|
||||
if( isIPK ){
|
||||
/* If a single PRIMARY KEY column with type INTEGER was seen, then it
|
||||
** might be an alise for the ROWID. But it might also be a WITHOUT ROWID
|
||||
** table or a INTEGER PRIMARY KEY DESC column, neither of which are
|
||||
** ROWID aliases. To distinguish these cases, check to see if
|
||||
** there is a "pk" entry in "PRAGMA index_list". There will be
|
||||
** no "pk" index if the PRIMARY KEY really is an alias for the ROWID.
|
||||
*/
|
||||
zSql = sqlite3_mprintf("SELECT 1 FROM pragma_index_list(%Q)"
|
||||
" WHERE origin='pk'", zTab);
|
||||
if( zSql==0 ) goto col_oom;
|
||||
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0);
|
||||
sqlite3_free(zSql);
|
||||
if( rc ){
|
||||
freeColumnList(azCol);
|
||||
return 0;
|
||||
}
|
||||
rc = sqlite3_step(pStmt);
|
||||
sqlite3_finalize(pStmt);
|
||||
pStmt = 0;
|
||||
preserveRowid = rc==SQLITE_ROW;
|
||||
}
|
||||
if( preserveRowid ){
|
||||
/* Only preserve the rowid if we can find a name to use for the
|
||||
** rowid */
|
||||
static char *azRowid[] = { "rowid", "_rowid_", "oid" };
|
||||
int i, j;
|
||||
for(j=0; j<3; j++){
|
||||
for(i=1; i<=nCol; i++){
|
||||
if( sqlite3_stricmp(azRowid[j],azCol[i])==0 ) break;
|
||||
}
|
||||
if( i>nCol ){
|
||||
/* At this point, we know that azRowid[j] is not the name of any
|
||||
** ordinary column in the table. Verify that azRowid[j] is a valid
|
||||
** name for the rowid before adding it to azCol[0]. WITHOUT ROWID
|
||||
** tables will fail this last check */
|
||||
rc = sqlite3_table_column_metadata(p->db,0,zTab,azRowid[j],0,0,0,0,0);
|
||||
if( rc==SQLITE_OK ) azCol[0] = azRowid[j];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return azCol;
|
||||
|
||||
col_oom:
|
||||
sqlite3_finalize(pStmt);
|
||||
freeColumnList(azCol);
|
||||
p->nErr++;
|
||||
p->rc = SQLITE_NOMEM;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
** Send mprintf-formatted content to the output callback.
|
||||
*/
|
||||
static void output_formatted(DState *p, const char *zFormat, ...){
|
||||
va_list ap;
|
||||
char *z;
|
||||
va_start(ap, zFormat);
|
||||
z = sqlite3_vmprintf(zFormat, ap);
|
||||
va_end(ap);
|
||||
p->xCallback(z, p->pArg);
|
||||
sqlite3_free(z);
|
||||
}
|
||||
|
||||
/*
|
||||
** Find a string that is not found anywhere in z[]. Return a pointer
|
||||
** to that string.
|
||||
**
|
||||
** Try to use zA and zB first. If both of those are already found in z[]
|
||||
** then make up some string and store it in the buffer zBuf.
|
||||
*/
|
||||
static const char *unused_string(
|
||||
const char *z, /* Result must not appear anywhere in z */
|
||||
const char *zA, const char *zB, /* Try these first */
|
||||
char *zBuf /* Space to store a generated string */
|
||||
){
|
||||
unsigned i = 0;
|
||||
if( strstr(z, zA)==0 ) return zA;
|
||||
if( strstr(z, zB)==0 ) return zB;
|
||||
do{
|
||||
sqlite3_snprintf(20,zBuf,"(%s%u)", zA, i++);
|
||||
}while( strstr(z,zBuf)!=0 );
|
||||
return zBuf;
|
||||
}
|
||||
|
||||
/*
|
||||
** Output the given string as a quoted string using SQL quoting conventions.
|
||||
** Additionallly , escape the "\n" and "\r" characters so that they do not
|
||||
** get corrupted by end-of-line translation facilities in some operating
|
||||
** systems.
|
||||
*/
|
||||
static void output_quoted_escaped_string(DState *p, const char *z){
|
||||
int i;
|
||||
char c;
|
||||
for(i=0; (c = z[i])!=0 && c!='\'' && c!='\n' && c!='\r'; i++){}
|
||||
if( c==0 ){
|
||||
output_formatted(p,"'%s'",z);
|
||||
}else{
|
||||
const char *zNL = 0;
|
||||
const char *zCR = 0;
|
||||
int nNL = 0;
|
||||
int nCR = 0;
|
||||
char zBuf1[20], zBuf2[20];
|
||||
for(i=0; z[i]; i++){
|
||||
if( z[i]=='\n' ) nNL++;
|
||||
if( z[i]=='\r' ) nCR++;
|
||||
}
|
||||
if( nNL ){
|
||||
p->xCallback("replace(", p->pArg);
|
||||
zNL = unused_string(z, "\\n", "\\012", zBuf1);
|
||||
}
|
||||
if( nCR ){
|
||||
p->xCallback("replace(", p->pArg);
|
||||
zCR = unused_string(z, "\\r", "\\015", zBuf2);
|
||||
}
|
||||
p->xCallback("'", p->pArg);
|
||||
while( *z ){
|
||||
for(i=0; (c = z[i])!=0 && c!='\n' && c!='\r' && c!='\''; i++){}
|
||||
if( c=='\'' ) i++;
|
||||
if( i ){
|
||||
output_formatted(p, "%.*s", i, z);
|
||||
z += i;
|
||||
}
|
||||
if( c=='\'' ){
|
||||
p->xCallback("'", p->pArg);
|
||||
continue;
|
||||
}
|
||||
if( c==0 ){
|
||||
break;
|
||||
}
|
||||
z++;
|
||||
if( c=='\n' ){
|
||||
p->xCallback(zNL, p->pArg);
|
||||
continue;
|
||||
}
|
||||
p->xCallback(zCR, p->pArg);
|
||||
}
|
||||
p->xCallback("'", p->pArg);
|
||||
if( nCR ){
|
||||
output_formatted(p, ",'%s',char(13))", zCR);
|
||||
}
|
||||
if( nNL ){
|
||||
output_formatted(p, ",'%s',char(10))", zNL);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** This is an sqlite3_exec callback routine used for dumping the database.
|
||||
** Each row received by this callback consists of a table name,
|
||||
** the table type ("index" or "table") and SQL to create the table.
|
||||
** This routine should print text sufficient to recreate the table.
|
||||
*/
|
||||
static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
|
||||
int rc;
|
||||
const char *zTable;
|
||||
const char *zType;
|
||||
const char *zSql;
|
||||
DState *p = (DState*)pArg;
|
||||
sqlite3_stmt *pStmt;
|
||||
|
||||
(void)azCol;
|
||||
if( nArg!=3 ) return 1;
|
||||
zTable = azArg[0];
|
||||
zType = azArg[1];
|
||||
zSql = azArg[2];
|
||||
|
||||
if( strcmp(zTable, "sqlite_sequence")==0 ){
|
||||
p->xCallback("DELETE FROM sqlite_sequence;\n", p->pArg);
|
||||
}else if( sqlite3_strglob("sqlite_stat?", zTable)==0 ){
|
||||
p->xCallback("ANALYZE sqlite_schema;\n", p->pArg);
|
||||
}else if( strncmp(zTable, "sqlite_", 7)==0 ){
|
||||
return 0;
|
||||
}else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){
|
||||
#if 0
|
||||
if( !p->writableSchema ){
|
||||
p->xCallback("PRAGMA writable_schema=ON;\n", p->pArg);
|
||||
p->writableSchema = 1;
|
||||
}
|
||||
output_formatted(p,
|
||||
"INSERT INTO sqlite_schema(type,name,tbl_name,rootpage,sql)"
|
||||
"VALUES('table','%q','%q',0,'%q');",
|
||||
zTable, zTable, zSql);
|
||||
return 0;
|
||||
#endif
|
||||
}else{
|
||||
if( sqlite3_strglob("CREATE TABLE ['\"]*", zSql)==0 ){
|
||||
p->xCallback("CREATE TABLE IF NOT EXISTS ", p->pArg);
|
||||
p->xCallback(zSql+13, p->pArg);
|
||||
}else{
|
||||
p->xCallback(zSql, p->pArg);
|
||||
}
|
||||
p->xCallback(";\n", p->pArg);
|
||||
}
|
||||
|
||||
if( strcmp(zType, "table")==0 ){
|
||||
DText sSelect;
|
||||
DText sTable;
|
||||
char **azTCol;
|
||||
int i;
|
||||
int nCol;
|
||||
|
||||
azTCol = tableColumnList(p, zTable);
|
||||
if( azTCol==0 ) return 0;
|
||||
|
||||
initText(&sTable);
|
||||
appendText(&sTable, "INSERT INTO ", 0);
|
||||
|
||||
/* Always quote the table name, even if it appears to be pure ascii,
|
||||
** in case it is a keyword. Ex: INSERT INTO "table" ... */
|
||||
appendText(&sTable, zTable, quoteChar(zTable));
|
||||
|
||||
/* If preserving the rowid, add a column list after the table name.
|
||||
** In other words: "INSERT INTO tab(rowid,a,b,c,...) VALUES(...)"
|
||||
** instead of the usual "INSERT INTO tab VALUES(...)".
|
||||
*/
|
||||
if( azTCol[0] ){
|
||||
appendText(&sTable, "(", 0);
|
||||
appendText(&sTable, azTCol[0], 0);
|
||||
for(i=1; azTCol[i]; i++){
|
||||
appendText(&sTable, ",", 0);
|
||||
appendText(&sTable, azTCol[i], quoteChar(azTCol[i]));
|
||||
}
|
||||
appendText(&sTable, ")", 0);
|
||||
}
|
||||
appendText(&sTable, " VALUES(", 0);
|
||||
|
||||
/* Build an appropriate SELECT statement */
|
||||
initText(&sSelect);
|
||||
appendText(&sSelect, "SELECT ", 0);
|
||||
if( azTCol[0] ){
|
||||
appendText(&sSelect, azTCol[0], 0);
|
||||
appendText(&sSelect, ",", 0);
|
||||
}
|
||||
for(i=1; azTCol[i]; i++){
|
||||
appendText(&sSelect, azTCol[i], quoteChar(azTCol[i]));
|
||||
if( azTCol[i+1] ){
|
||||
appendText(&sSelect, ",", 0);
|
||||
}
|
||||
}
|
||||
nCol = i;
|
||||
if( azTCol[0]==0 ) nCol--;
|
||||
freeColumnList(azTCol);
|
||||
appendText(&sSelect, " FROM ", 0);
|
||||
appendText(&sSelect, zTable, quoteChar(zTable));
|
||||
|
||||
rc = sqlite3_prepare_v2(p->db, sSelect.z, -1, &pStmt, 0);
|
||||
if( rc!=SQLITE_OK ){
|
||||
p->nErr++;
|
||||
if( p->rc==SQLITE_OK ) p->rc = rc;
|
||||
}else{
|
||||
while( SQLITE_ROW==sqlite3_step(pStmt) ){
|
||||
p->xCallback(sTable.z, p->pArg);
|
||||
for(i=0; i<nCol; i++){
|
||||
if( i ) p->xCallback(",", p->pArg);
|
||||
switch( sqlite3_column_type(pStmt,i) ){
|
||||
case SQLITE_INTEGER: {
|
||||
output_formatted(p, "%lld", sqlite3_column_int64(pStmt,i));
|
||||
break;
|
||||
}
|
||||
case SQLITE_FLOAT: {
|
||||
double r = sqlite3_column_double(pStmt,i);
|
||||
sqlite3_uint64 ur;
|
||||
memcpy(&ur,&r,sizeof(r));
|
||||
if( ur==0x7ff0000000000000LL ){
|
||||
p->xCallback("1e999", p->pArg);
|
||||
}else if( ur==0xfff0000000000000LL ){
|
||||
p->xCallback("-1e999", p->pArg);
|
||||
}else{
|
||||
output_formatted(p, "%!.20g", r);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case SQLITE_NULL: {
|
||||
p->xCallback("NULL", p->pArg);
|
||||
break;
|
||||
}
|
||||
case SQLITE_TEXT: {
|
||||
output_quoted_escaped_string(p,
|
||||
(const char*)sqlite3_column_text(pStmt,i));
|
||||
break;
|
||||
}
|
||||
case SQLITE_BLOB: {
|
||||
int nByte = sqlite3_column_bytes(pStmt,i);
|
||||
unsigned char *a = (unsigned char*)sqlite3_column_blob(pStmt,i);
|
||||
int j;
|
||||
p->xCallback("x'", p->pArg);
|
||||
for(j=0; j<nByte; j++){
|
||||
char zWord[3];
|
||||
zWord[0] = "0123456789abcdef"[(a[j]>>4)&15];
|
||||
zWord[1] = "0123456789abcdef"[a[j]&15];
|
||||
zWord[2] = 0;
|
||||
p->xCallback(zWord, p->pArg);
|
||||
}
|
||||
p->xCallback("'", p->pArg);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
p->xCallback(");\n", p->pArg);
|
||||
}
|
||||
}
|
||||
sqlite3_finalize(pStmt);
|
||||
freeText(&sTable);
|
||||
freeText(&sSelect);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Execute a query statement that will generate SQL output. Print
|
||||
** the result columns, comma-separated, on a line and then add a
|
||||
** semicolon terminator to the end of that line.
|
||||
**
|
||||
** If the number of columns is 1 and that column contains text "--"
|
||||
** then write the semicolon on a separate line. That way, if a
|
||||
** "--" comment occurs at the end of the statement, the comment
|
||||
** won't consume the semicolon terminator.
|
||||
*/
|
||||
static void output_sql_from_query(
|
||||
DState *p, /* Query context */
|
||||
const char *zSelect, /* SELECT statement to extract content */
|
||||
...
|
||||
){
|
||||
sqlite3_stmt *pSelect;
|
||||
int rc;
|
||||
int nResult;
|
||||
int i;
|
||||
const char *z;
|
||||
char *zSql;
|
||||
va_list ap;
|
||||
va_start(ap, zSelect);
|
||||
zSql = sqlite3_vmprintf(zSelect, ap);
|
||||
va_end(ap);
|
||||
if( zSql==0 ){
|
||||
p->rc = SQLITE_NOMEM;
|
||||
p->nErr++;
|
||||
return;
|
||||
}
|
||||
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pSelect, 0);
|
||||
sqlite3_free(zSql);
|
||||
if( rc!=SQLITE_OK || !pSelect ){
|
||||
output_formatted(p, "/**** ERROR: (%d) %s *****/\n", rc,
|
||||
sqlite3_errmsg(p->db));
|
||||
p->nErr++;
|
||||
return;
|
||||
}
|
||||
rc = sqlite3_step(pSelect);
|
||||
nResult = sqlite3_column_count(pSelect);
|
||||
while( rc==SQLITE_ROW ){
|
||||
z = (const char*)sqlite3_column_text(pSelect, 0);
|
||||
p->xCallback(z, p->pArg);
|
||||
for(i=1; i<nResult; i++){
|
||||
p->xCallback(",", p->pArg);
|
||||
p->xCallback((const char*)sqlite3_column_text(pSelect,i), p->pArg);
|
||||
}
|
||||
if( z==0 ) z = "";
|
||||
while( z[0] && (z[0]!='-' || z[1]!='-') ) z++;
|
||||
if( z[0] ){
|
||||
p->xCallback("\n;\n", p->pArg);
|
||||
}else{
|
||||
p->xCallback(";\n", p->pArg);
|
||||
}
|
||||
rc = sqlite3_step(pSelect);
|
||||
}
|
||||
rc = sqlite3_finalize(pSelect);
|
||||
if( rc!=SQLITE_OK ){
|
||||
output_formatted(p, "/**** ERROR: (%d) %s *****/\n", rc,
|
||||
sqlite3_errmsg(p->db));
|
||||
if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** Run zQuery. Use dump_callback() as the callback routine so that
|
||||
** the contents of the query are output as SQL statements.
|
||||
**
|
||||
** If we get a SQLITE_CORRUPT error, rerun the query after appending
|
||||
** "ORDER BY rowid DESC" to the end.
|
||||
*/
|
||||
static void run_schema_dump_query(
|
||||
DState *p,
|
||||
const char *zQuery,
|
||||
...
|
||||
){
|
||||
char *zErr = 0;
|
||||
char *z;
|
||||
va_list ap;
|
||||
va_start(ap, zQuery);
|
||||
z = sqlite3_vmprintf(zQuery, ap);
|
||||
va_end(ap);
|
||||
sqlite3_exec(p->db, z, dump_callback, p, &zErr);
|
||||
sqlite3_free(z);
|
||||
if( zErr ){
|
||||
output_formatted(p, "/****** %s ******/\n", zErr);
|
||||
sqlite3_free(zErr);
|
||||
p->nErr++;
|
||||
zErr = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** Convert an SQLite database into SQL statements that will recreate that
|
||||
** database.
|
||||
*/
|
||||
int sqlite3_db_dump(
|
||||
sqlite3 *db, /* The database connection */
|
||||
const char *zSchema, /* Which schema to dump. Usually "main". */
|
||||
const char *zTable, /* Which table to dump. NULL means everything. */
|
||||
int (*xCallback)(const char*,void*), /* Output sent to this callback */
|
||||
void *pArg /* Second argument of the callback */
|
||||
){
|
||||
DState x;
|
||||
memset(&x, 0, sizeof(x));
|
||||
x.rc = sqlite3_exec(db, "BEGIN", 0, 0, 0);
|
||||
if( x.rc ) return x.rc;
|
||||
x.db = db;
|
||||
x.xCallback = xCallback;
|
||||
x.pArg = pArg;
|
||||
xCallback("PRAGMA foreign_keys=OFF;\nBEGIN TRANSACTION;\n", pArg);
|
||||
if( zTable==0 ){
|
||||
run_schema_dump_query(&x,
|
||||
"SELECT name, type, sql FROM \"%w\".sqlite_schema "
|
||||
"WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'",
|
||||
zSchema
|
||||
);
|
||||
run_schema_dump_query(&x,
|
||||
"SELECT name, type, sql FROM \"%w\".sqlite_schema "
|
||||
"WHERE name=='sqlite_sequence'", zSchema
|
||||
);
|
||||
output_sql_from_query(&x,
|
||||
"SELECT sql FROM sqlite_schema "
|
||||
"WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
|
||||
);
|
||||
}else{
|
||||
run_schema_dump_query(&x,
|
||||
"SELECT name, type, sql FROM \"%w\".sqlite_schema "
|
||||
"WHERE tbl_name=%Q COLLATE nocase AND type=='table'"
|
||||
" AND sql NOT NULL",
|
||||
zSchema, zTable
|
||||
);
|
||||
output_sql_from_query(&x,
|
||||
"SELECT sql FROM \"%w\".sqlite_schema "
|
||||
"WHERE sql NOT NULL"
|
||||
" AND type IN ('index','trigger','view')"
|
||||
" AND tbl_name=%Q COLLATE nocase",
|
||||
zSchema, zTable
|
||||
);
|
||||
}
|
||||
if( x.writableSchema ){
|
||||
xCallback("PRAGMA writable_schema=OFF;\n", pArg);
|
||||
}
|
||||
xCallback(x.nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n", pArg);
|
||||
sqlite3_exec(db, "COMMIT", 0, 0, 0);
|
||||
return x.rc;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* The generic subroutine is above. The code the follows implements
|
||||
** the command-line interface.
|
||||
*/
|
||||
#ifdef DBDUMP_STANDALONE
|
||||
#include <stdio.h>
|
||||
|
||||
/*
|
||||
** Command-line interface
|
||||
*/
|
||||
int main(int argc, char **argv){
|
||||
sqlite3 *db;
|
||||
const char *zDb;
|
||||
const char *zSchema;
|
||||
const char *zTable = 0;
|
||||
int rc;
|
||||
|
||||
if( argc<2 || argc>4 ){
|
||||
fprintf(stderr, "Usage: %s DATABASE ?SCHEMA? ?TABLE?\n", argv[0]);
|
||||
return 1;
|
||||
}
|
||||
zDb = argv[1];
|
||||
zSchema = argc>=3 ? argv[2] : "main";
|
||||
zTable = argc==4 ? argv[3] : 0;
|
||||
|
||||
rc = sqlite3_open(zDb, &db);
|
||||
if( rc ){
|
||||
fprintf(stderr, "Cannot open \"%s\": %s\n", zDb, sqlite3_errmsg(db));
|
||||
sqlite3_close(db);
|
||||
return 1;
|
||||
}
|
||||
rc = sqlite3_db_dump(db, zSchema, zTable,
|
||||
(int(*)(const char*,void*))fputs, (void*)stdout);
|
||||
if( rc ){
|
||||
fprintf(stderr, "Error: sqlite3_db_dump() returns %d\n", rc);
|
||||
}
|
||||
sqlite3_close(db);
|
||||
return rc!=SQLITE_OK;
|
||||
}
|
||||
#endif /* DBDUMP_STANDALONE */
|
||||
@ -0,0 +1,4 @@
|
||||
|
||||
INSERT INTO environ VALUES ('SEARCH_TERM', '%mount%');
|
||||
|
||||
SELECT log_line, log_body FROM syslog_log WHERE log_body LIKE $SEARCH_TERM
|
||||
@ -0,0 +1,71 @@
|
||||
/**
|
||||
* Copyright (c) 2021, 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 "lnav.hh"
|
||||
#include "base/injector.hh"
|
||||
#include "service_tags.hh"
|
||||
|
||||
struct lnav_data_t lnav_data;
|
||||
|
||||
void rebuild_hist()
|
||||
{
|
||||
}
|
||||
|
||||
bool setup_logline_table(exec_context &ec)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
bool rescan_files(bool required)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
void wait_for_children()
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void rebuild_indexes()
|
||||
{
|
||||
}
|
||||
|
||||
textview_curses *get_textview_for_mode(ln_mode_t mode)
|
||||
{
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
readline_context::command_map_t lnav_commands;
|
||||
|
||||
template<>
|
||||
void injector::force_linking(services::curl_streamer_t anno)
|
||||
{
|
||||
}
|
||||
Loading…
Reference in New Issue