広告
LinuxでWindowsのkbhit()相当を実装する。
kbhit.h
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#ifndef _KBHIT_H_ #define _KBHIT_H_ #include <stdbool.h> #include <termios.h> #include <unistd.h> extern void KB_open(void); extern void KB_close(void); extern bool kbhit(void); extern char linux_getch(void); #endif /* _KBHIT_H_ */ |
kbhit.c
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#include "kbhit.h" static struct termios Old_set; static struct termios New_set; static int ReadChar = -1; void KB_open() { tcgetattr(0,&Old_set); New_set = Old_set; New_set.c_lflag &= ~ICANON; New_set.c_lflag &= ~ECHO; New_set.c_lflag &= ~ISIG; New_set.c_cc[VMIN] = 0; New_set.c_cc[VTIME] = 0; tcsetattr(0,TCSANOW,&Old_set); } void KB_close() { tcsetattr(0,TCSANOW, &Old_set); } bool kbhit() { char ch; int nread; if(ReadChar !=-1) { return true; } New_set.c_cc[VMIN]=0; tcsetattr(0,TCSANOW,&New_set); nread=read(0,&ch,1); New_set.c_cc[VMIN]=1; tcsetattr(0,TCSANOW,&New_set); if(nread == 1) { ReadChar = ch; return true; } return false; } char linux_getch() { char ch; if(ReadChar != -1) { ch = ReadChar; ReadChar = -1; return (ch); } read(0,&ch,1); return(ch); } |
main.c
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#include <stdio.h> #include <stdlib.h> #include <unistd.h> int main(void) { KB_open(); while(1) { if (kbhit()) { char ch = linux_getch(); printf("kbhit: %c\n", ch); if ('q' == ch) { break; } } usleep(10000); } KB_close(); } |
Makefile
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kbloop: kbhit.o main.o gcc -o kbloop kbhit.o main.o kbhit.o: kbhit.h kbhit.c gcc -c kbhit.c main.o: main.c gcc -c main.c clean: rm -f *.o |
実行例
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$ make gcc -c kbhit.c gcc -c main.c gcc -o kbloop kbhit.o main.o $ $ ./kbloop kbhit: a kbhit: b kbhit: c kbhit: d kbhit: e kbhit: f kbhit: g kbhit: q $ $ |
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