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Functions | |
| int | getinput (char *buffer, int maxchars) |
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Definition at line 60 of file getinput.c. Referenced by main().
00061 {
00062 int flags;
00063 int nchars;
00064 int index = 0;
00065
00066 /* save the flags */
00067 flags = fcntl(STDIN_FILENO, F_GETFL);
00068
00069 /* make terminal non-blocking */
00070 fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
00071
00072 /* read the outstanding chars, one by one, until newline or no more */
00073 while (1 == (nchars = read(STDIN_FILENO, &buffer[index], 1)))
00074 {
00075 if (buffer[index++] == '\n')
00076 {
00077 buffer[index] = 0; /* null terminate */
00078 break;
00079 }
00080 }
00081
00082 /* restore the terminal */
00083 fcntl(STDIN_FILENO, F_SETFL, flags);
00084
00085 if (nchars == -1)
00086 {
00087 return -1; /* nothing new */
00088 }
00089
00090 if (nchars == 0)
00091 {
00092 return 0; /* end of file */
00093 }
00094
00095 return index;
00096 }
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1.2.11.1 written by Dimitri van Heesch,
© 1997-2001