#include "ex.h" #ifdef VISUAL #include "ex_tty.h" #include "ex_vis.h" /* * Ex - a text editor * Bill Joy UCB September 1977 */ char Peekkey; ungetkey(c) char c; { Peekkey = c; } getkey() { register char c; do c = getbr(); while (c == 0); return (c); } peekbr() { register char c; Peekkey = getbr(); return (Peekkey == 0); } getbr() { char c; if (Peekkey) { c = Peekkey; Peekkey = 0; return (c); } if (vglobp) { if (*vglobp) return (*vglobp++); return (ESCAPE); } flusho(); if (read(0, &c, 1) != 1) error("Input read error"); c =& 0177; return (c); } getesc() { register int c; c = getkey(); switch (c) { case DELETE: case FS: ungetkey(c); case ESCAPE: return (0); } return (c); } peekkey() { Peekkey = getkey(); return (Peekkey); } #endif