You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
C Libraries<br />
What is curses?<br />
- library of routines for screen management<br />
- located in "/usr/lib/libcurses.a"<br />
- link editor "cc file.c -lcurses -o file"<br />
/* example program: */<br />
#include <br />
main()<br />
{<br />
initscr(); /* initialise terminal settings */<br />
move(LINES/2 - 1, COLS/2 - 4);<br />
addstr("Bulls");<br />
refresh(); /* send output to terminal screen */<br />
addstr("Eye");<br />
refresh();<br />
endwin(); /* restore all terminal settings */<br />
}<br />
What is terminfo ?<br />
- routines <strong>with</strong>in curses library, e. g. to program function keys<br />
- database of terminal capabilities<br />
# example - clear screen script<br />
tput clear<br />
tput cup 11 36<br />
echo "BullsEye"<br />
Screen management programs using curses obtain info on terminals at run time from terminfo database.<br />
TERM;vt100<br />
export TERM<br />
tput init<br />
/usr/lib/termintolv/vtl00<br />
Components:<br />
captoinfo(lM)<br />
curses(3x)<br />
infocmp(1m)<br />
tabs(1)<br />
terminfo(4)<br />
tic(1M)<br />
tput(1)<br />
tool to convert termcap to terminfo<br />
tool for printing compiled terminal info<br />
tool for setting non-standard tab stops<br />
tool to compile terminal info<br />
tool for outputting terminal capability<br />
Output:<br />
int addch(chtype ch)<br />
int addstr(char *str)<br />
int printw(fmt)<br />
int move(int y, x)<br />
int clear()<br />
write a character at a time<br />
write a string (calls addch)<br />
similar to printf<br />
move cursor to row y, column x<br />
clear screen<br />
Input:<br />
int getch()<br />
int getstr(char *str)<br />
int scanw(fmt)<br />
read character from terminal<br />
read string until <br />
similar to scan<br />
Output Attributes:<br />
int attron(chtype attrs)<br />
turns on attribute in addition<br />
76
Change language