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/*
* Copyright (c) 2016-2024 Free Software Foundation, Inc.
*
* This file is part of libwget.
*
* Libwget is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Libwget is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libwget. If not, see <https://www.gnu.org/licenses/>.
*
*
* Console functions
*
*/
#include <config.h>
#include <wget.h>
#include "private.h"
#ifdef _WIN32
#include <windows.h>
CONSOLE_SCREEN_BUFFER_INFO g_console_info;
HANDLE g_stdout_hnd = INVALID_HANDLE_VALUE;
CRITICAL_SECTION g_trace_crit;
#endif
/**
* \file
* \brief Console functions
* \defgroup libwget-console Console functions
* @{
*
* Routines to address console controls like cursor positioning, fg+bg colors, ...
*/
static void reset_color(void)
{
#ifdef _WIN32
fflush(stdout);
if (g_stdout_hnd != INVALID_HANDLE_VALUE) {
SetConsoleTextAttribute(g_stdout_hnd, g_console_info.wAttributes);
g_stdout_hnd = INVALID_HANDLE_VALUE;
}
#else
if (isatty(fileno(stdout)))
fputs("\033[m", stdout);
fflush(stdout);
#endif
}
/**
* \param[in] colorid Number of foreground/text color to set
*
* Sets the console foreground (text) color.
*/
#ifdef _WIN32
void wget_console_set_fg_color(wget_console_color colorid)
{
if (g_stdout_hnd != INVALID_HANDLE_VALUE) {
static short color[] = {
[WGET_CONSOLE_COLOR_WHITE] = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED,
[WGET_CONSOLE_COLOR_BLUE] = FOREGROUND_BLUE,
[WGET_CONSOLE_COLOR_GREEN] = FOREGROUND_GREEN,
[WGET_CONSOLE_COLOR_RED] = FOREGROUND_RED,
[WGET_CONSOLE_COLOR_MAGENTA] = FOREGROUND_RED | FOREGROUND_BLUE
};
fflush (stdout);
if (colorid == WGET_CONSOLE_COLOR_RESET)
SetConsoleTextAttribute (g_stdout_hnd, g_console_info.wAttributes);
else if (colorid < countof(color)) {
WORD attr = (g_console_info.wAttributes & ~7) | color[colorid];
SetConsoleTextAttribute (g_stdout_hnd, attr | FOREGROUND_INTENSITY);
}
}
}
#else
void wget_console_set_fg_color(WGET_GCC_UNUSED wget_console_color colorid)
{
}
#endif
/**
* Resets the console foreground (text) color.
*/
void wget_console_reset_fg_color(void)
{
wget_console_set_fg_color(WGET_CONSOLE_COLOR_RESET);
}
#ifdef _WIN32
static DWORD SetupConsoleHandle(BOOL is_input, HANDLE handle) {
DWORD mode = 0;
if (handle == INVALID_HANDLE_VALUE)
return mode;
if (!GetConsoleMode(handle, &mode))
return mode;
DWORD orig = mode;
if (is_input)
mode |= ENABLE_VIRTUAL_TERMINAL_INPUT;
else
mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
SetConsoleMode(handle, mode);
return orig;
}
#endif
/**
* \return 0 on success, or -1 on error
*
* Initializes the console.
*/
int wget_console_init(void)
{
#ifdef _WIN32
static int win_init;
if (win_init)
return 0;
g_stdout_hnd = GetStdHandle(STD_OUTPUT_HANDLE);
if (g_stdout_hnd != INVALID_HANDLE_VALUE) {
GetConsoleScreenBufferInfo(g_stdout_hnd, &g_console_info);
if (GetFileType(g_stdout_hnd) != FILE_TYPE_CHAR) /* The console is redirected */
g_stdout_hnd = INVALID_HANDLE_VALUE;
}
SetupConsoleHandle(true, GetStdHandle(STD_INPUT_HANDLE));
SetupConsoleHandle(false, GetStdHandle(STD_OUTPUT_HANDLE));
win_init = 1;
#endif
atexit(reset_color);
return 0;
}
/**
* \return 0 on success, or -1 on error
*
* Deinitializes the console.
*/
int wget_console_deinit(void)
{
reset_color();
return 0;
}
/**@}*/
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