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/**
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* Copyright (c) 2013, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file lnav_util.cc
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*
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* Dumping ground for useful functions with no other home.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <ctype.h>
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#include "lnav_util.hh"
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#include "base/opt_util.hh"
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#include "base/result.h"
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#include "ansi_scrubber.hh"
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#include "fmt/format.h"
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using namespace std;
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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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}
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else if (delta < 60) {
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return "just now";
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}
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else if (delta < (60 * 2)) {
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return "one minute ago";
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}
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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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}
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else if (delta < (2 * 60 * 60)) {
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return "one hour ago";
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}
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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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}
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else if (delta < (2 * 24 * 60 * 60)) {
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return "one day ago";
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}
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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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}
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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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}
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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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}
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else if (diff.tv_sec <= 1) {
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return "a second ago";
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}
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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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}
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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 string(buf);
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}
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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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bool change_to_parent_dir()
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{
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bool retval = false;
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char cwd[3] = "";
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if (getcwd(cwd, sizeof(cwd)) == nullptr) {
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/* perror("getcwd"); */
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}
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if (strcmp(cwd, "/") != 0) {
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if (chdir("..") == -1) {
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perror("chdir('..')");
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}
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else {
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retval = true;
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}
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}
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return retval;
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}
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template<typename T>
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size_t strtonum(T &num_out, const char *string, size_t len)
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{
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size_t retval = 0;
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T sign = 1;
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num_out = 0;
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for (; retval < len && isspace(string[retval]); retval++);
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for (; retval < len && string[retval] == '-'; retval++) {
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sign *= -1;
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}
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for (; retval < len && string[retval] == '+'; retval++);
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for (; retval < len && isdigit(string[retval]); retval++) {
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num_out *= 10;
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num_out += string[retval] - '0';
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}
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return retval;
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}
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template
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size_t strtonum<long long>(long long &num_out, const char *string, size_t len);
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template
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size_t strtonum<long>(long &num_out, const char *string, size_t len);
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template
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size_t strtonum<int>(int &num_out, const char *string, size_t len);
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string build_path(const vector<ghc::filesystem::path> &paths)
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{
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string retval;
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for (const auto &path : paths) {
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if (path.empty()) {
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continue;
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}
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if (!retval.empty()) {
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retval += ":";
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}
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retval += path.string();
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}
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auto env_path = getenv_opt("PATH");
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if (env_path) {
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retval += ":" + string(*env_path);
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}
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return retval;
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}
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bool read_file(const ghc::filesystem::path &filename, string &out)
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{
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std::ifstream sql_file(filename.string());
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if (sql_file) {
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out.assign((std::istreambuf_iterator<char>(sql_file)),
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std::istreambuf_iterator<char>());
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return true;
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}
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return false;
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}
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Result<std::pair<ghc::filesystem::path, int>, std::string>
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open_temp_file(const ghc::filesystem::path &pattern)
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{
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auto pattern_str = pattern.string();
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char pattern_copy[pattern_str.size() + 1];
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int fd;
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strcpy(pattern_copy, pattern_str.c_str());
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if ((fd = mkstemp(pattern_copy)) == -1) {
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return Err(fmt::format("unable to create temporary file: {} -- {}",
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pattern.string(), strerror(errno)));
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}
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return Ok(make_pair(ghc::filesystem::path(pattern_copy), fd));
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}
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bool is_dev_null(const struct stat &st)
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{
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struct stat null_stat;
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stat("/dev/null", &null_stat);
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return st.st_dev == null_stat.st_dev &&
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st.st_ino == null_stat.st_ino;
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}
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bool is_dev_null(int fd)
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{
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struct stat fd_stat;
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fstat(fd, &fd_stat);
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return is_dev_null(fd_stat);
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}
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std::string ok_prefix(std::string msg)
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{
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if (msg.empty()) {
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return msg;
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}
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return std::string(ANSI_COLOR(COLOR_GREEN) "\u2714" ANSI_NORM " ") + msg;
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}
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std::string err_prefix(const std::string msg)
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{
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if (msg.empty()) {
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return msg;
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}
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return std::string(ANSI_COLOR(COLOR_RED) "\u2718" ANSI_NORM " ") + msg;
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}
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Result<std::string, std::string> err_to_ok(const std::string msg)
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{
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return Ok(err_prefix(msg));
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}
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