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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ArgsParser.h>
#include <LibCore/DateTime.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
const int line_width = 70;
const int line_count = 8;
const int column_width = 22;
char print_buffer[line_width * line_count];
char temp_buffer[line_width * 8];
int target_day;
int current_year;
int current_month;
static void append_to_print(char* buffer, int row, int column, char* text)
{
int starting_point = (line_width * row) + (column * column_width);
for (int i = 0; text[i] != '\0'; i++) {
buffer[starting_point + i] = text[i];
}
}
static void insert_month_to_print(int column, int month, int year)
{
int printing_column = column;
int printing_row = 0;
// FIXME: Both the month name and month header text should be provided by a locale
sprintf(temp_buffer, " %02u - %04u ", month, year);
append_to_print(print_buffer, printing_row, printing_column, temp_buffer);
printing_row++;
sprintf(temp_buffer, "Su Mo Tu We Th Fr Sa");
append_to_print(print_buffer, printing_row, printing_column, temp_buffer);
printing_row++;
int day_to_print = 1;
auto date_time = Core::DateTime::create(year, month, 1);
int first_day_of_week_for_month = date_time.weekday();
int days_in_the_month = date_time.days_in_month();
int last_written_chars = 0;
for (int i = 1; day_to_print <= days_in_the_month; ++i) {
if (i - 1 < first_day_of_week_for_month) {
last_written_chars += sprintf(temp_buffer + last_written_chars, " ");
} else {
if (year == current_year && month == current_month && target_day == day_to_print) {
// FIXME: To replicate Unix cal it would be better to use "\x1b[30;47m%2d\x1b[0m " in here instead of *.
// However, doing that messes up the layout.
last_written_chars += sprintf(temp_buffer + last_written_chars, "%2d*", day_to_print);
} else {
last_written_chars += sprintf(temp_buffer + last_written_chars, "%2d ", day_to_print);
}
day_to_print++;
}
append_to_print(print_buffer, printing_row, printing_column, temp_buffer);
if (i % 7 == 0) {
printing_row++;
memset(temp_buffer, ' ', line_width * 8);
temp_buffer[line_width * 8 - 1] = '\0';
last_written_chars = 0;
}
}
}
static void clean_buffers()
{
for (int i = 1; i < line_width * line_count; ++i) {
print_buffer[i - 1] = i % line_width == 0 ? '\n' : ' ';
}
print_buffer[line_width * line_count - 1] = '\0';
for (int i = 0; i < line_width; ++i) {
temp_buffer[i] = ' ';
}
temp_buffer[line_width - 1] = '\0';
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath"));
TRY(Core::System::unveil("/etc/timezone", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
int day = 0;
int month = 0;
int year = 0;
Core::ArgsParser args_parser;
args_parser.set_general_help("Display a nice overview of a month or year, defaulting to the current month.");
// FIXME: This should ensure two values get parsed as month + year
args_parser.add_positional_argument(day, "Day of year", "day", Core::ArgsParser::Required::No);
args_parser.add_positional_argument(month, "Month", "month", Core::ArgsParser::Required::No);
args_parser.add_positional_argument(year, "Year", "year", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
time_t now = time(nullptr);
auto* tm = localtime(&now);
// Hack: workaround two values parsing as day + month.
if (day && month && !year) {
year = month;
month = day;
day = 0;
}
bool year_mode = !day && !month && year;
if (!year)
year = tm->tm_year + 1900;
if (!month)
month = tm->tm_mon + 1;
if (!day)
day = tm->tm_mday;
current_year = year;
current_month = month;
clean_buffers();
if (year_mode) {
out(" Year {:04} ", year);
outln();
outln();
for (int i = 1; i < 12; ++i) {
insert_month_to_print(0, i++, year);
insert_month_to_print(1, i++, year);
insert_month_to_print(2, i, year);
outln("{}", print_buffer);
clean_buffers();
}
} else {
insert_month_to_print(0, month, year);
outln("{}", print_buffer);
clean_buffers();
}
return 0;
}
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