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refactored terminal primitives to header; more cosmetics

This commit is contained in:
Adrien Bourmault 2021-08-07 01:14:17 +02:00
parent c8d1cb1038
commit 7ba450380f
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GPG Key ID: 6EB408FE0ACEC664
2 changed files with 186 additions and 6 deletions
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173
include/terminal.h Normal file
View File

@ -0,0 +1,173 @@
//=-------------------------------------------------------------------------=//
// Terminal management tools //
// //
// Copyright © 2021 The Gem-graph Project //
// //
// This file is part of gem-graph. //
// //
// This program is free software: you can redistribute it and/or modify //
// it under the terms of the GNU Affero General Public License as //
// published by the Free Software Foundation, either version 3 of the //
// License, or (at your option) any later version. //
// //
// This program 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 Affero General Public License for more details. //
// //
// You should have received a copy of the GNU Affero General Public License //
// along with this program. If not, see <https://www.gnu.org/licenses/>. //
//=-------------------------------------------------------------------------=//
#ifndef BASE_H
#include "../include/base.h"
#endif
#include <sys/ioctl.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#define C_CLEARSCREEN "\e[2J"
#define C_CLEARLINE "\e[2K"
#define C_CURSORLEFT "\e[1D"
#define C_CURSORRIGHT "\e[1C"
#define C_SAVE_CURSORPOS "\e7"
#define C_RESTORE_CURSORPOS "\e8"
#define C_COLOR_RED "\e[01;31m"
#define C_COLOR_YELLOW "\e[00;33m"
#define C_COLOR_GREEN "\e[00;32m"
#define C_COLOR_BLUE "\e[01;34m"
#define C_COLOR_REVERSE "\e[7m"
#define C_COLOR_NORMAL "\e[0m"
#define C_COLOR_BLACK_ON_GREEN "\e[30;42m"
#define C_COLOR_LIGHTWHITE_ON_GREEN "\e[47;42m"
#define C_COLOR_LIGHTWHITE_ON_GREY "\e[47;100m"
#define C_COLOR_BLACK_ON_LIGHTGREY "\e[30;102m"
#define C_COLOR_WHITE_ON_BLUE "\e[107;44m"
#define NON_BLOCKING 1
volatile struct winsize terminalSize;
//
// Get a character code from the keyboard
//
static inline int getch(bool nonBlocking)
{
int buf = 0;
// old terminal
struct termios old = {0};
// force flush stdout
fflush(stdout);
// Set non-blocking mode if asked
if(nonBlocking)
fcntl(0, F_SETFL, O_NONBLOCK);
if(tcgetattr(0, &old) < 0) {
printLog("%sError getting terminal settings! (%s)\n",
C_COLOR_RED,
strerror(errno));
return -1;
}
old.c_lflag &= ~ICANON; // disable buffered I/O
old.c_lflag &= ~ECHO; // set no echo mode
if(tcsetattr(0, TCSANOW, &old) < 0) {
printLog("%sError setting terminal settings! (%s)\n",
C_COLOR_RED,
strerror(errno));
return -1;
}
buf = getchar();
if(buf < 0) {
// Check target busy (try again)
if(errno == EAGAIN)
return 0;
printLog("%sError reading character! (%s)\n",
C_COLOR_RED,
strerror(errno));
return -1;
}
old.c_lflag |= ICANON; // enable buffered I/O
old.c_lflag |= ECHO; // set echo mode
if(tcsetattr(0, TCSADRAIN, &old) < 0) {
printLog("%sError resetting terminal settings! (%s)\n",
C_COLOR_RED,
strerror(errno));
return -1;
}
// Reset blocking mode
if(nonBlocking)
fcntl(0, F_SETFL, 0);
return buf;
}
//
// Get the screen size
//
static inline void getScreenSize(int signum)
{
// Get current terminal size
ioctl(STDOUT_FILENO, TIOCGWINSZ, &terminalSize);
}
//
// Set cursor location
//
static inline void setCursorLocation(char x, char y)
{
printf("\x1b[%d;%dH", y, x);
}
//
// Save cursor location
//
static inline void saveCursorLocation(void)
{
printf(C_SAVE_CURSORPOS);
}
//
// Restore cursor location
//
static inline void restoreCursorLocation(void)
{
printf(C_RESTORE_CURSORPOS);
}
//
// Move cursor location to the right
//
static inline void moveCursorForward(void)
{
printf(C_CURSORRIGHT);
}
//
// Move cursor location to the left
//
static inline void moveCursorBackward(void)
{
printf(C_CURSORLEFT);
}
//
// Clear screen
//
static inline void clearScreen(void)
{
printf(C_CLEARSCREEN);
setCursorLocation(1,1);
fflush(stdout);
}

19
src/cli.c
View File

@ -85,36 +85,36 @@ void decorateMonitor(int signum)
screenTitleText
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 2);
printf("%s%s (void)",
printf("%s%s",
C_COLOR_NORMAL C_COLOR_BLACK_ON_GREEN,
infosTitleText
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 3);
setCursorLocation(terminalSize.ws_col / 3 * 2, 4);
printf("%s%s%s (void)",
C_COLOR_NORMAL C_COLOR_BLACK_ON_LIGHTGREY,
infosNameText,
C_COLOR_NORMAL
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 4);
setCursorLocation(terminalSize.ws_col / 3 * 2, 6);
printf("%s%s%s (void)",
C_COLOR_BLACK_ON_GREEN,
infosStatusText,
C_COLOR_NORMAL
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 5);
setCursorLocation(terminalSize.ws_col / 3 * 2, 8);
printf("%s%s%s (void)",
C_COLOR_BLACK_ON_LIGHTGREY,
infosOwnerText,
C_COLOR_NORMAL
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 6);
setCursorLocation(terminalSize.ws_col / 3 * 2, 10);
printf("%s%s%s (void)",
C_COLOR_BLACK_ON_GREEN,
infosSchedulerText,
C_COLOR_NORMAL
);
setCursorLocation(terminalSize.ws_col / 3 * 2, 7);
setCursorLocation(terminalSize.ws_col / 3 * 2, 12);
printf("%s%s%s (void)",
C_COLOR_BLACK_ON_LIGHTGREY,
infosScThreadsText,
@ -127,6 +127,13 @@ void decorateMonitor(int signum)
printf(" ");
}
setCursorLocation(1, terminalSize.ws_row);
printf(C_COLOR_NORMAL);
for (int i = 0; i < terminalSize.ws_col; i++) {
printf(" ");
}
setCursorLocation(1, terminalSize.ws_row);
printf("%sQ%s Quit\t%sS%s Start/Stop",
C_COLOR_NORMAL C_COLOR_REVERSE,
C_COLOR_NORMAL,