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hellwig |
#ifndef lint
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static char rcsid[] =
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"$Id: getline.c,v 3.11 1993/12/02 15:54:31 thewalt Exp thewalt $";
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static char *copyright = "Copyright (C) 1991, 1992, 1993, Chris Thewalt";
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#endif
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/*
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* Copyright (C) 1991, 1992, 1993 by Chris Thewalt (thewalt@ce.berkeley.edu)
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*
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* Permission to use, copy, modify, and distribute this software
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* for any purpose and without fee is hereby granted, provided
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* that the above copyright notices appear in all copies and that both the
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* copyright notice and this permission notice appear in supporting
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* documentation. This software is provided "as is" without express or
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* implied warranty.
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*
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* Thanks to the following people who have provided enhancements and fixes:
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* Ron Ueberschaer, Christoph Keller, Scott Schwartz, Steven List,
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* DaviD W. Sanderson, Goran Bostrom, Michael Gleason, Glenn Kasten,
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* Edin Hodzic, Eric J Bivona, Kai Uwe Rommel, Danny Quah, Ulrich Betzler
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*/
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#include "getline.h"
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static int gl_tab(); /* forward reference needed for gl_tab_hook */
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/******************** imported interface *********************************/
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <signal.h>
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extern int isatty();
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extern void *malloc();
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extern void free();
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/********************* exported interface ********************************/
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char *gl_getline(); /* read a line of input */
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void gl_setwidth(); /* specify width of screen */
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void gl_histadd(); /* adds entries to hist */
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void gl_strwidth(); /* to bind gl_strlen */
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int (*gl_in_hook)() = 0;
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int (*gl_out_hook)() = 0;
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int (*gl_tab_hook)() = gl_tab;
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/******************** internal interface *********************************/
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#define BUF_SIZE 1024
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static int gl_init_done = -1; /* terminal mode flag */
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static int gl_termw = 80; /* actual terminal width */
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static int gl_scroll = 27; /* width of EOL scrolling region */
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static int gl_width = 0; /* net size available for input */
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static int gl_extent = 0; /* how far to redraw, 0 means all */
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static int gl_overwrite = 0; /* overwrite mode */
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static int gl_pos, gl_cnt = 0; /* position and size of input */
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static char gl_buf[BUF_SIZE]; /* input buffer */
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static char gl_killbuf[BUF_SIZE]=""; /* killed text */
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static char *gl_prompt; /* to save the prompt string */
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static char gl_intrc = 0; /* keyboard SIGINT char */
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static char gl_quitc = 0; /* keyboard SIGQUIT char */
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static char gl_suspc = 0; /* keyboard SIGTSTP char */
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static char gl_dsuspc = 0; /* delayed SIGTSTP char */
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static int gl_search_mode = 0; /* search mode flag */
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static void gl_init(); /* prepare to edit a line */
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static void gl_cleanup(); /* to undo gl_init */
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static void gl_char_init(); /* get ready for no echo input */
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static void gl_char_cleanup(); /* undo gl_char_init */
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static size_t (*gl_strlen)() = (size_t(*)())strlen;
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/* returns printable prompt width */
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static void gl_addchar(); /* install specified char */
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static void gl_del(); /* del, either left (-1) or cur (0) */
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static void gl_error(); /* write error msg and die */
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static void gl_fixup(); /* fixup state variables and screen */
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static int gl_getc(); /* read one char from terminal */
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static void gl_kill(); /* delete to EOL */
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static void gl_newline(); /* handle \n or \r */
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static void gl_putc(); /* write one char to terminal */
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static void gl_puts(); /* write a line to terminal */
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static void gl_redraw(); /* issue \n and redraw all */
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static void gl_transpose(); /* transpose two chars */
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static void gl_yank(); /* yank killed text */
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static void gl_word(); /* move a word */
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static void hist_init(); /* initializes hist pointers */
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static char *hist_next(); /* return ptr to next item */
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static char *hist_prev(); /* return ptr to prev item */
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static char *hist_save(); /* makes copy of a string, without NL */
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static void search_addchar(); /* increment search string */
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static void search_term(); /* reset with current contents */
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static void search_back(); /* look back for current string */
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static void search_forw(); /* look forw for current string */
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/************************ nonportable part *********************************/
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extern int write();
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extern void exit();
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#ifdef unix
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#ifndef __unix__
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#define __unix__
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#endif /* not __unix__ */
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#endif /* unix */
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#ifdef _IBMR2
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#ifndef __unix__
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#define __unix__
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#endif
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#endif
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#ifdef __GO32__
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#include <pc.h>
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#undef MSDOS
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#undef __unix__
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#endif
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#ifdef MSDOS
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#include <bios.h>
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#endif
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#ifdef __unix__
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#ifndef __convexc__
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extern int read();
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extern int kill();
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extern int ioctl();
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#endif /* not __convexc__ */
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#ifdef POSIX /* use POSIX interface */
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#include <termios.h>
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struct termios new_termios, old_termios;
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#else /* not POSIX */
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#include <sys/ioctl.h>
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#ifdef M_XENIX /* does not really use bsd terminal interface */
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#undef TIOCSETN
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#endif /* M_XENIX */
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#ifdef TIOCSETN /* use BSD interface */
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#include <sgtty.h>
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struct sgttyb new_tty, old_tty;
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struct tchars tch;
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struct ltchars ltch;
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#else /* use SYSV interface */
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#include <termio.h>
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struct termio new_termio, old_termio;
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#endif /* TIOCSETN */
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#endif /* POSIX */
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#endif /* __unix__ */
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#ifdef vms
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#include <descrip.h>
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#include <ttdef.h>
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#include <iodef.h>
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#include unixio
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static int setbuff[2]; /* buffer to set terminal attributes */
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static short chan = -1; /* channel to terminal */
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struct dsc$descriptor_s descrip; /* VMS descriptor */
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#endif
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static void
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gl_char_init() /* turn off input echo */
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{
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#ifdef __unix__
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#ifdef POSIX
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tcgetattr(0, &old_termios);
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gl_intrc = old_termios.c_cc[VINTR];
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gl_quitc = old_termios.c_cc[VQUIT];
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#ifdef VSUSP
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gl_suspc = old_termios.c_cc[VSUSP];
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#endif
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#ifdef VDSUSP
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gl_dsuspc = old_termios.c_cc[VDSUSP];
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#endif
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new_termios = old_termios;
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new_termios.c_iflag &= ~(BRKINT|ISTRIP|IXON|IXOFF);
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new_termios.c_iflag |= (IGNBRK|IGNPAR);
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new_termios.c_lflag &= ~(ICANON|ISIG|IEXTEN|ECHO);
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new_termios.c_cc[VMIN] = 1;
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new_termios.c_cc[VTIME] = 0;
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tcsetattr(0, TCSANOW, &new_termios);
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#else /* not POSIX */
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#ifdef TIOCSETN /* BSD */
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ioctl(0, TIOCGETC, &tch);
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ioctl(0, TIOCGLTC, <ch);
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gl_intrc = tch.t_intrc;
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gl_quitc = tch.t_quitc;
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gl_suspc = ltch.t_suspc;
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gl_dsuspc = ltch.t_dsuspc;
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ioctl(0, TIOCGETP, &old_tty);
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new_tty = old_tty;
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new_tty.sg_flags |= RAW;
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new_tty.sg_flags &= ~ECHO;
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ioctl(0, TIOCSETN, &new_tty);
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#else /* SYSV */
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ioctl(0, TCGETA, &old_termio);
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gl_intrc = old_termio.c_cc[VINTR];
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gl_quitc = old_termio.c_cc[VQUIT];
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new_termio = old_termio;
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new_termio.c_iflag &= ~(BRKINT|ISTRIP|IXON|IXOFF);
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new_termio.c_iflag |= (IGNBRK|IGNPAR);
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new_termio.c_lflag &= ~(ICANON|ISIG|ECHO);
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new_termio.c_cc[VMIN] = 1;
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| 206 |
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new_termio.c_cc[VTIME] = 0;
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| 207 |
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ioctl(0, TCSETA, &new_termio);
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#endif /* TIOCSETN */
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| 209 |
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#endif /* POSIX */
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| 210 |
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#endif /* __unix__ */
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| 211 |
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| 212 |
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#ifdef vms
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descrip.dsc$w_length = strlen("tt:");
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| 214 |
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descrip.dsc$b_dtype = DSC$K_DTYPE_T;
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| 215 |
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descrip.dsc$b_class = DSC$K_CLASS_S;
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| 216 |
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descrip.dsc$a_pointer = "tt:";
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| 217 |
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(void)sys$assign(&descrip,&chan,0,0);
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| 218 |
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(void)sys$qiow(0,chan,IO$_SENSEMODE,0,0,0,setbuff,8,0,0,0,0);
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| 219 |
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setbuff[1] |= TT$M_NOECHO;
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| 220 |
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(void)sys$qiow(0,chan,IO$_SETMODE,0,0,0,setbuff,8,0,0,0,0);
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| 221 |
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#endif /* vms */
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| 222 |
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}
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| 223 |
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| 224 |
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static void
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| 225 |
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gl_char_cleanup() /* undo effects of gl_char_init */
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| 226 |
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{
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| 227 |
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#ifdef __unix__
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| 228 |
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#ifdef POSIX
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| 229 |
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tcsetattr(0, TCSANOW, &old_termios);
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| 230 |
|
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#else /* not POSIX */
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| 231 |
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#ifdef TIOCSETN /* BSD */
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| 232 |
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ioctl(0, TIOCSETN, &old_tty);
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| 233 |
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#else /* SYSV */
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| 234 |
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ioctl(0, TCSETA, &old_termio);
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| 235 |
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#endif /* TIOCSETN */
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| 236 |
|
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#endif /* POSIX */
|
| 237 |
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#endif /* __unix__ */
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| 238 |
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|
| 239 |
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#ifdef vms
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| 240 |
|
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setbuff[1] &= ~TT$M_NOECHO;
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| 241 |
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(void)sys$qiow(0,chan,IO$_SETMODE,0,0,0,setbuff,8,0,0,0,0);
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| 242 |
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sys$dassgn(chan);
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| 243 |
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chan = -1;
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| 244 |
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#endif
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| 245 |
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}
|
| 246 |
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|
| 247 |
|
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#if MSDOS || __EMX__ || __GO32__
|
| 248 |
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int pc_keymap(c)
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| 249 |
|
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int c;
|
| 250 |
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{
|
| 251 |
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switch (c) {
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| 252 |
|
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case 72: c = 16; /* up -> ^P */
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| 253 |
|
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break;
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| 254 |
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case 80: c = 14; /* down -> ^N */
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| 255 |
|
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break;
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| 256 |
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case 75: c = 2; /* left -> ^B */
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| 257 |
|
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break;
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| 258 |
|
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case 77: c = 6; /* right -> ^F */
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| 259 |
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break;
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| 260 |
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default: c = 0; /* make it garbage */
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| 261 |
|
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}
|
| 262 |
|
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return c;
|
| 263 |
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}
|
| 264 |
|
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#endif /* MSDOS || __EMX__ || __GO32__ */
|
| 265 |
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|
| 266 |
|
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static int
|
| 267 |
|
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gl_getc()
|
| 268 |
|
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/* get a character without echoing it to screen */
|
| 269 |
|
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{
|
| 270 |
|
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int c;
|
| 271 |
|
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#ifdef __unix__
|
| 272 |
|
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char ch;
|
| 273 |
|
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#endif
|
| 274 |
|
|
|
| 275 |
|
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#ifdef __unix__
|
| 276 |
|
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while ((c = read(0, &ch, 1)) == -1) {
|
| 277 |
|
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if (errno != EINTR)
|
| 278 |
|
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break;
|
| 279 |
|
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}
|
| 280 |
|
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c = (ch <= 0)? -1 : ch;
|
| 281 |
|
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#endif /* __unix__ */
|
| 282 |
|
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#ifdef MSDOS
|
| 283 |
|
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c = _bios_keybrd(_NKEYBRD_READ);
|
| 284 |
|
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#endif /* MSDOS */
|
| 285 |
|
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#ifdef __GO32__
|
| 286 |
|
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c = getkey () ;
|
| 287 |
|
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if (c > 255) c = pc_keymap(c & 0377);
|
| 288 |
|
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#endif /* __GO32__ */
|
| 289 |
|
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#ifdef __TURBOC__
|
| 290 |
|
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while(!bioskey(1))
|
| 291 |
|
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;
|
| 292 |
|
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c = bioskey(0);
|
| 293 |
|
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#endif
|
| 294 |
|
|
#if MSDOS || __TURBOC__
|
| 295 |
|
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if ((c & 0377) == 224) {
|
| 296 |
|
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c = pc_keymap((c >> 8) & 0377);
|
| 297 |
|
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} else {
|
| 298 |
|
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c &= 0377;
|
| 299 |
|
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}
|
| 300 |
|
|
#endif /* MSDOS || __TURBOC__ */
|
| 301 |
|
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#ifdef __EMX__
|
| 302 |
|
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c = _read_kbd(0, 1, 0);
|
| 303 |
|
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if (c == 224 || c == 0) {
|
| 304 |
|
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c = pc_keymap(_read_kbd(0, 1, 0));
|
| 305 |
|
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} else {
|
| 306 |
|
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c &= 0377;
|
| 307 |
|
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}
|
| 308 |
|
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#endif
|
| 309 |
|
|
#ifdef vms
|
| 310 |
|
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if(chan < 0) {
|
| 311 |
|
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c='\0';
|
| 312 |
|
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}
|
| 313 |
|
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(void)sys$qiow(0,chan,IO$_TTYREADALL,0,0,0,&c,1,0,0,0,0);
|
| 314 |
|
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c &= 0177; /* get a char */
|
| 315 |
|
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#endif
|
| 316 |
|
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return c;
|
| 317 |
|
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}
|
| 318 |
|
|
|
| 319 |
|
|
static void
|
| 320 |
|
|
gl_putc(c)
|
| 321 |
|
|
int c;
|
| 322 |
|
|
{
|
| 323 |
|
|
char ch = c;
|
| 324 |
|
|
|
| 325 |
|
|
write(1, &ch, 1);
|
| 326 |
|
|
if (ch == '\n') {
|
| 327 |
|
|
ch = '\r';
|
| 328 |
|
|
write(1, &ch, 1); /* RAW mode needs '\r', does not hurt */
|
| 329 |
|
|
}
|
| 330 |
|
|
}
|
| 331 |
|
|
|
| 332 |
|
|
/******************** fairly portable part *********************************/
|
| 333 |
|
|
|
| 334 |
|
|
static void
|
| 335 |
|
|
gl_puts(buf)
|
| 336 |
|
|
char *buf;
|
| 337 |
|
|
{
|
| 338 |
|
|
int len;
|
| 339 |
|
|
|
| 340 |
|
|
if (buf) {
|
| 341 |
|
|
len = strlen(buf);
|
| 342 |
|
|
write(1, buf, len);
|
| 343 |
|
|
}
|
| 344 |
|
|
}
|
| 345 |
|
|
|
| 346 |
|
|
static void
|
| 347 |
|
|
gl_error(buf)
|
| 348 |
|
|
char *buf;
|
| 349 |
|
|
{
|
| 350 |
|
|
int len = strlen(buf);
|
| 351 |
|
|
|
| 352 |
|
|
gl_cleanup();
|
| 353 |
|
|
write(2, buf, len);
|
| 354 |
|
|
exit(1);
|
| 355 |
|
|
}
|
| 356 |
|
|
|
| 357 |
|
|
static void
|
| 358 |
|
|
gl_init()
|
| 359 |
|
|
/* set up variables and terminal */
|
| 360 |
|
|
{
|
| 361 |
|
|
if (gl_init_done < 0) { /* -1 only on startup */
|
| 362 |
|
|
hist_init();
|
| 363 |
|
|
}
|
| 364 |
|
|
if (isatty(0) == 0 || isatty(1) == 0)
|
| 365 |
|
|
gl_error("\n*** Error: getline(): not interactive, use stdio.\n");
|
| 366 |
|
|
gl_char_init();
|
| 367 |
|
|
gl_init_done = 1;
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
static void
|
| 371 |
|
|
gl_cleanup()
|
| 372 |
|
|
/* undo effects of gl_init, as necessary */
|
| 373 |
|
|
{
|
| 374 |
|
|
if (gl_init_done > 0)
|
| 375 |
|
|
gl_char_cleanup();
|
| 376 |
|
|
gl_init_done = 0;
|
| 377 |
|
|
}
|
| 378 |
|
|
|
| 379 |
|
|
void
|
| 380 |
|
|
gl_setwidth(w)
|
| 381 |
|
|
int w;
|
| 382 |
|
|
{
|
| 383 |
|
|
if (w > 20) {
|
| 384 |
|
|
gl_termw = w;
|
| 385 |
|
|
gl_scroll = w / 3;
|
| 386 |
|
|
} else {
|
| 387 |
|
|
gl_error("\n*** Error: minimum screen width is 21\n");
|
| 388 |
|
|
}
|
| 389 |
|
|
}
|
| 390 |
|
|
|
| 391 |
|
|
char *
|
| 392 |
|
|
gl_getline(prompt)
|
| 393 |
|
|
char *prompt;
|
| 394 |
|
|
{
|
| 395 |
|
|
int c, loc, tmp;
|
| 396 |
|
|
|
| 397 |
|
|
#ifdef __unix__
|
| 398 |
|
|
int sig;
|
| 399 |
|
|
#endif
|
| 400 |
|
|
|
| 401 |
|
|
gl_init();
|
| 402 |
|
|
gl_prompt = (prompt)? prompt : "";
|
| 403 |
|
|
gl_buf[0] = 0;
|
| 404 |
|
|
if (gl_in_hook)
|
| 405 |
|
|
gl_in_hook(gl_buf);
|
| 406 |
|
|
gl_fixup(gl_prompt, -2, BUF_SIZE);
|
| 407 |
|
|
while ((c = gl_getc()) >= 0) {
|
| 408 |
|
|
gl_extent = 0; /* reset to full extent */
|
| 409 |
|
|
if (isprint(c)) {
|
| 410 |
|
|
if (gl_search_mode)
|
| 411 |
|
|
search_addchar(c);
|
| 412 |
|
|
else
|
| 413 |
|
|
gl_addchar(c);
|
| 414 |
|
|
} else {
|
| 415 |
|
|
if (gl_search_mode) {
|
| 416 |
|
|
if (c == '\033' || c == '\016' || c == '\020') {
|
| 417 |
|
|
search_term();
|
| 418 |
|
|
c = 0; /* ignore the character */
|
| 419 |
|
|
} else if (c == '\010' || c == '\177') {
|
| 420 |
|
|
search_addchar(-1); /* unwind search string */
|
| 421 |
|
|
c = 0;
|
| 422 |
|
|
} else if (c != '\022' && c != '\023') {
|
| 423 |
|
|
search_term(); /* terminate and handle char */
|
| 424 |
|
|
}
|
| 425 |
|
|
}
|
| 426 |
|
|
switch (c) {
|
| 427 |
|
|
case '\n': case '\r': /* newline */
|
| 428 |
|
|
gl_newline();
|
| 429 |
|
|
gl_cleanup();
|
| 430 |
|
|
return gl_buf;
|
| 431 |
|
|
/*NOTREACHED*/
|
| 432 |
|
|
break;
|
| 433 |
|
|
case '\001': gl_fixup(gl_prompt, -1, 0); /* ^A */
|
| 434 |
|
|
break;
|
| 435 |
|
|
case '\002': gl_fixup(gl_prompt, -1, gl_pos-1); /* ^B */
|
| 436 |
|
|
break;
|
| 437 |
|
|
case '\004': /* ^D */
|
| 438 |
|
|
if (gl_cnt == 0) {
|
| 439 |
|
|
gl_buf[0] = 0;
|
| 440 |
|
|
gl_cleanup();
|
| 441 |
|
|
gl_putc('\n');
|
| 442 |
|
|
return gl_buf;
|
| 443 |
|
|
} else {
|
| 444 |
|
|
gl_del(0);
|
| 445 |
|
|
}
|
| 446 |
|
|
break;
|
| 447 |
|
|
case '\005': gl_fixup(gl_prompt, -1, gl_cnt); /* ^E */
|
| 448 |
|
|
break;
|
| 449 |
|
|
case '\006': gl_fixup(gl_prompt, -1, gl_pos+1); /* ^F */
|
| 450 |
|
|
break;
|
| 451 |
|
|
case '\010': case '\177': gl_del(-1); /* ^H and DEL */
|
| 452 |
|
|
break;
|
| 453 |
|
|
case '\t': /* TAB */
|
| 454 |
|
|
if (gl_tab_hook) {
|
| 455 |
|
|
tmp = gl_pos;
|
| 456 |
|
|
loc = gl_tab_hook(gl_buf, gl_strlen(gl_prompt), &tmp);
|
| 457 |
|
|
if (loc >= 0 || tmp != gl_pos)
|
| 458 |
|
|
gl_fixup(gl_prompt, loc, tmp);
|
| 459 |
|
|
}
|
| 460 |
|
|
break;
|
| 461 |
|
|
case '\013': gl_kill(gl_pos); /* ^K */
|
| 462 |
|
|
break;
|
| 463 |
|
|
case '\014': gl_redraw(); /* ^L */
|
| 464 |
|
|
break;
|
| 465 |
|
|
case '\016': /* ^N */
|
| 466 |
|
|
strcpy(gl_buf, hist_next());
|
| 467 |
|
|
if (gl_in_hook)
|
| 468 |
|
|
gl_in_hook(gl_buf);
|
| 469 |
|
|
gl_fixup(gl_prompt, 0, BUF_SIZE);
|
| 470 |
|
|
break;
|
| 471 |
|
|
case '\017': gl_overwrite = !gl_overwrite; /* ^O */
|
| 472 |
|
|
break;
|
| 473 |
|
|
case '\020': /* ^P */
|
| 474 |
|
|
strcpy(gl_buf, hist_prev());
|
| 475 |
|
|
if (gl_in_hook)
|
| 476 |
|
|
gl_in_hook(gl_buf);
|
| 477 |
|
|
gl_fixup(gl_prompt, 0, BUF_SIZE);
|
| 478 |
|
|
break;
|
| 479 |
|
|
case '\022': search_back(1); /* ^R */
|
| 480 |
|
|
break;
|
| 481 |
|
|
case '\023': search_forw(1); /* ^S */
|
| 482 |
|
|
break;
|
| 483 |
|
|
case '\024': gl_transpose(); /* ^T */
|
| 484 |
|
|
break;
|
| 485 |
|
|
case '\025': gl_kill(0); /* ^U */
|
| 486 |
|
|
break;
|
| 487 |
|
|
case '\031': gl_yank(); /* ^Y */
|
| 488 |
|
|
break;
|
| 489 |
|
|
case '\033': /* ansi arrow keys */
|
| 490 |
|
|
c = gl_getc();
|
| 491 |
|
|
if (c == '[') {
|
| 492 |
|
|
switch(c = gl_getc()) {
|
| 493 |
|
|
case 'A': /* up */
|
| 494 |
|
|
strcpy(gl_buf, hist_prev());
|
| 495 |
|
|
if (gl_in_hook)
|
| 496 |
|
|
gl_in_hook(gl_buf);
|
| 497 |
|
|
gl_fixup(gl_prompt, 0, BUF_SIZE);
|
| 498 |
|
|
break;
|
| 499 |
|
|
case 'B': /* down */
|
| 500 |
|
|
strcpy(gl_buf, hist_next());
|
| 501 |
|
|
if (gl_in_hook)
|
| 502 |
|
|
gl_in_hook(gl_buf);
|
| 503 |
|
|
gl_fixup(gl_prompt, 0, BUF_SIZE);
|
| 504 |
|
|
break;
|
| 505 |
|
|
case 'C': gl_fixup(gl_prompt, -1, gl_pos+1); /* right */
|
| 506 |
|
|
break;
|
| 507 |
|
|
case 'D': gl_fixup(gl_prompt, -1, gl_pos-1); /* left */
|
| 508 |
|
|
break;
|
| 509 |
|
|
default: gl_putc('\007'); /* who knows */
|
| 510 |
|
|
break;
|
| 511 |
|
|
}
|
| 512 |
|
|
} else if (c == 'f' || c == 'F') {
|
| 513 |
|
|
gl_word(1);
|
| 514 |
|
|
} else if (c == 'b' || c == 'B') {
|
| 515 |
|
|
gl_word(-1);
|
| 516 |
|
|
} else
|
| 517 |
|
|
gl_putc('\007');
|
| 518 |
|
|
break;
|
| 519 |
|
|
default: /* check for a terminal signal */
|
| 520 |
|
|
#ifdef __unix__
|
| 521 |
|
|
if (c > 0) { /* ignore 0 (reset above) */
|
| 522 |
|
|
sig = 0;
|
| 523 |
|
|
#ifdef SIGINT
|
| 524 |
|
|
if (c == gl_intrc)
|
| 525 |
|
|
sig = SIGINT;
|
| 526 |
|
|
#endif
|
| 527 |
|
|
#ifdef SIGQUIT
|
| 528 |
|
|
if (c == gl_quitc)
|
| 529 |
|
|
sig = SIGQUIT;
|
| 530 |
|
|
#endif
|
| 531 |
|
|
#ifdef SIGTSTP
|
| 532 |
|
|
if (c == gl_suspc || c == gl_dsuspc)
|
| 533 |
|
|
sig = SIGTSTP;
|
| 534 |
|
|
#endif
|
| 535 |
|
|
if (sig != 0) {
|
| 536 |
|
|
gl_cleanup();
|
| 537 |
|
|
kill(0, sig);
|
| 538 |
|
|
gl_init();
|
| 539 |
|
|
gl_redraw();
|
| 540 |
|
|
c = 0;
|
| 541 |
|
|
}
|
| 542 |
|
|
}
|
| 543 |
|
|
#endif /* __unix__ */
|
| 544 |
|
|
if (c > 0)
|
| 545 |
|
|
gl_putc('\007');
|
| 546 |
|
|
break;
|
| 547 |
|
|
}
|
| 548 |
|
|
}
|
| 549 |
|
|
}
|
| 550 |
|
|
gl_cleanup();
|
| 551 |
|
|
gl_buf[0] = 0;
|
| 552 |
|
|
return gl_buf;
|
| 553 |
|
|
}
|
| 554 |
|
|
|
| 555 |
|
|
static void
|
| 556 |
|
|
gl_addchar(c)
|
| 557 |
|
|
int c;
|
| 558 |
|
|
/* adds the character c to the input buffer at current location */
|
| 559 |
|
|
{
|
| 560 |
|
|
int i;
|
| 561 |
|
|
|
| 562 |
|
|
if (gl_cnt >= BUF_SIZE - 1)
|
| 563 |
|
|
gl_error("\n*** Error: getline(): input buffer overflow\n");
|
| 564 |
|
|
if (gl_overwrite == 0 || gl_pos == gl_cnt) {
|
| 565 |
|
|
for (i=gl_cnt; i >= gl_pos; i--)
|
| 566 |
|
|
gl_buf[i+1] = gl_buf[i];
|
| 567 |
|
|
gl_buf[gl_pos] = c;
|
| 568 |
|
|
gl_fixup(gl_prompt, gl_pos, gl_pos+1);
|
| 569 |
|
|
} else {
|
| 570 |
|
|
gl_buf[gl_pos] = c;
|
| 571 |
|
|
gl_extent = 1;
|
| 572 |
|
|
gl_fixup(gl_prompt, gl_pos, gl_pos+1);
|
| 573 |
|
|
}
|
| 574 |
|
|
}
|
| 575 |
|
|
|
| 576 |
|
|
static void
|
| 577 |
|
|
gl_yank()
|
| 578 |
|
|
/* adds the kill buffer to the input buffer at current location */
|
| 579 |
|
|
{
|
| 580 |
|
|
int i, len;
|
| 581 |
|
|
|
| 582 |
|
|
len = strlen(gl_killbuf);
|
| 583 |
|
|
if (len > 0) {
|
| 584 |
|
|
if (gl_overwrite == 0) {
|
| 585 |
|
|
if (gl_cnt + len >= BUF_SIZE - 1)
|
| 586 |
|
|
gl_error("\n*** Error: getline(): input buffer overflow\n");
|
| 587 |
|
|
for (i=gl_cnt; i >= gl_pos; i--)
|
| 588 |
|
|
gl_buf[i+len] = gl_buf[i];
|
| 589 |
|
|
for (i=0; i < len; i++)
|
| 590 |
|
|
gl_buf[gl_pos+i] = gl_killbuf[i];
|
| 591 |
|
|
gl_fixup(gl_prompt, gl_pos, gl_pos+len);
|
| 592 |
|
|
} else {
|
| 593 |
|
|
if (gl_pos + len > gl_cnt) {
|
| 594 |
|
|
if (gl_pos + len >= BUF_SIZE - 1)
|
| 595 |
|
|
gl_error("\n*** Error: getline(): input buffer overflow\n");
|
| 596 |
|
|
gl_buf[gl_pos + len] = 0;
|
| 597 |
|
|
}
|
| 598 |
|
|
for (i=0; i < len; i++)
|
| 599 |
|
|
gl_buf[gl_pos+i] = gl_killbuf[i];
|
| 600 |
|
|
gl_extent = len;
|
| 601 |
|
|
gl_fixup(gl_prompt, gl_pos, gl_pos+len);
|
| 602 |
|
|
}
|
| 603 |
|
|
} else
|
| 604 |
|
|
gl_putc('\007');
|
| 605 |
|
|
}
|
| 606 |
|
|
|
| 607 |
|
|
static void
|
| 608 |
|
|
gl_transpose()
|
| 609 |
|
|
/* switch character under cursor and to left of cursor */
|
| 610 |
|
|
{
|
| 611 |
|
|
int c;
|
| 612 |
|
|
|
| 613 |
|
|
if (gl_pos > 0 && gl_cnt > gl_pos) {
|
| 614 |
|
|
c = gl_buf[gl_pos-1];
|
| 615 |
|
|
gl_buf[gl_pos-1] = gl_buf[gl_pos];
|
| 616 |
|
|
gl_buf[gl_pos] = c;
|
| 617 |
|
|
gl_extent = 2;
|
| 618 |
|
|
gl_fixup(gl_prompt, gl_pos-1, gl_pos);
|
| 619 |
|
|
} else
|
| 620 |
|
|
gl_putc('\007');
|
| 621 |
|
|
}
|
| 622 |
|
|
|
| 623 |
|
|
static void
|
| 624 |
|
|
gl_newline()
|
| 625 |
|
|
/*
|
| 626 |
|
|
* Cleans up entire line before returning to caller. A \n is appended.
|
| 627 |
|
|
* If line longer than screen, we redraw starting at beginning
|
| 628 |
|
|
*/
|
| 629 |
|
|
{
|
| 630 |
|
|
int change = gl_cnt;
|
| 631 |
|
|
int len = gl_cnt;
|
| 632 |
|
|
int loc = gl_width - 5; /* shifts line back to start position */
|
| 633 |
|
|
|
| 634 |
|
|
if (gl_cnt >= BUF_SIZE - 1)
|
| 635 |
|
|
gl_error("\n*** Error: getline(): input buffer overflow\n");
|
| 636 |
|
|
if (gl_out_hook) {
|
| 637 |
|
|
change = gl_out_hook(gl_buf);
|
| 638 |
|
|
len = strlen(gl_buf);
|
| 639 |
|
|
}
|
| 640 |
|
|
if (loc > len)
|
| 641 |
|
|
loc = len;
|
| 642 |
|
|
gl_fixup(gl_prompt, change, loc); /* must do this before appending \n */
|
| 643 |
|
|
gl_buf[len] = '\n';
|
| 644 |
|
|
gl_buf[len+1] = '\0';
|
| 645 |
|
|
gl_putc('\n');
|
| 646 |
|
|
}
|
| 647 |
|
|
|
| 648 |
|
|
static void
|
| 649 |
|
|
gl_del(loc)
|
| 650 |
|
|
int loc;
|
| 651 |
|
|
/*
|
| 652 |
|
|
* Delete a character. The loc variable can be:
|
| 653 |
|
|
* -1 : delete character to left of cursor
|
| 654 |
|
|
* 0 : delete character under cursor
|
| 655 |
|
|
*/
|
| 656 |
|
|
{
|
| 657 |
|
|
int i;
|
| 658 |
|
|
|
| 659 |
|
|
if ((loc == -1 && gl_pos > 0) || (loc == 0 && gl_pos < gl_cnt)) {
|
| 660 |
|
|
for (i=gl_pos+loc; i < gl_cnt; i++)
|
| 661 |
|
|
gl_buf[i] = gl_buf[i+1];
|
| 662 |
|
|
gl_fixup(gl_prompt, gl_pos+loc, gl_pos+loc);
|
| 663 |
|
|
} else
|
| 664 |
|
|
gl_putc('\007');
|
| 665 |
|
|
}
|
| 666 |
|
|
|
| 667 |
|
|
static void
|
| 668 |
|
|
gl_kill(pos)
|
| 669 |
|
|
int pos;
|
| 670 |
|
|
/* delete from pos to the end of line */
|
| 671 |
|
|
{
|
| 672 |
|
|
if (pos < gl_cnt) {
|
| 673 |
|
|
strcpy(gl_killbuf, gl_buf + pos);
|
| 674 |
|
|
gl_buf[pos] = '\0';
|
| 675 |
|
|
gl_fixup(gl_prompt, pos, pos);
|
| 676 |
|
|
} else
|
| 677 |
|
|
gl_putc('\007');
|
| 678 |
|
|
}
|
| 679 |
|
|
|
| 680 |
|
|
static void
|
| 681 |
|
|
gl_word(direction)
|
| 682 |
|
|
int direction;
|
| 683 |
|
|
/* move forward or backword one word */
|
| 684 |
|
|
{
|
| 685 |
|
|
int pos = gl_pos;
|
| 686 |
|
|
|
| 687 |
|
|
if (direction > 0) { /* forward */
|
| 688 |
|
|
while (!isspace(gl_buf[pos]) && pos < gl_cnt)
|
| 689 |
|
|
pos++;
|
| 690 |
|
|
while (isspace(gl_buf[pos]) && pos < gl_cnt)
|
| 691 |
|
|
pos++;
|
| 692 |
|
|
} else { /* backword */
|
| 693 |
|
|
if (pos > 0)
|
| 694 |
|
|
pos--;
|
| 695 |
|
|
while (isspace(gl_buf[pos]) && pos > 0)
|
| 696 |
|
|
pos--;
|
| 697 |
|
|
while (!isspace(gl_buf[pos]) && pos > 0)
|
| 698 |
|
|
pos--;
|
| 699 |
|
|
if (pos < gl_cnt && isspace(gl_buf[pos])) /* move onto word */
|
| 700 |
|
|
pos++;
|
| 701 |
|
|
}
|
| 702 |
|
|
gl_fixup(gl_prompt, -1, pos);
|
| 703 |
|
|
}
|
| 704 |
|
|
|
| 705 |
|
|
static void
|
| 706 |
|
|
gl_redraw()
|
| 707 |
|
|
/* emit a newline, reset and redraw prompt and current input line */
|
| 708 |
|
|
{
|
| 709 |
|
|
if (gl_init_done > 0) {
|
| 710 |
|
|
gl_putc('\n');
|
| 711 |
|
|
gl_fixup(gl_prompt, -2, gl_pos);
|
| 712 |
|
|
}
|
| 713 |
|
|
}
|
| 714 |
|
|
|
| 715 |
|
|
static void
|
| 716 |
|
|
gl_fixup(prompt, change, cursor)
|
| 717 |
|
|
char *prompt;
|
| 718 |
|
|
int change, cursor;
|
| 719 |
|
|
/*
|
| 720 |
|
|
* This function is used both for redrawing when input changes or for
|
| 721 |
|
|
* moving within the input line. The parameters are:
|
| 722 |
|
|
* prompt: compared to last_prompt[] for changes;
|
| 723 |
|
|
* change : the index of the start of changes in the input buffer,
|
| 724 |
|
|
* with -1 indicating no changes, -2 indicating we're on
|
| 725 |
|
|
* a new line, redraw everything.
|
| 726 |
|
|
* cursor : the desired location of the cursor after the call.
|
| 727 |
|
|
* A value of BUF_SIZE can be used to indicate the cursor should
|
| 728 |
|
|
* move just past the end of the input line.
|
| 729 |
|
|
*/
|
| 730 |
|
|
{
|
| 731 |
|
|
static int gl_shift; /* index of first on screen character */
|
| 732 |
|
|
static int off_right; /* true if more text right of screen */
|
| 733 |
|
|
static int off_left; /* true if more text left of screen */
|
| 734 |
|
|
static char last_prompt[80] = "";
|
| 735 |
|
|
int left = 0, right = -1; /* bounds for redraw */
|
| 736 |
|
|
int pad; /* how much to erase at end of line */
|
| 737 |
|
|
int backup; /* how far to backup before fixing */
|
| 738 |
|
|
int new_shift; /* value of shift based on cursor */
|
| 739 |
|
|
int extra; /* adjusts when shift (scroll) happens */
|
| 740 |
|
|
int i;
|
| 741 |
|
|
int new_right = -1; /* alternate right bound, using gl_extent */
|
| 742 |
|
|
int l1, l2;
|
| 743 |
|
|
|
| 744 |
|
|
if (change == -2) { /* reset */
|
| 745 |
|
|
gl_pos = gl_cnt = gl_shift = off_right = off_left = 0;
|
| 746 |
|
|
gl_putc('\r');
|
| 747 |
|
|
gl_puts(prompt);
|
| 748 |
|
|
strcpy(last_prompt, prompt);
|
| 749 |
|
|
change = 0;
|
| 750 |
|
|
gl_width = gl_termw - gl_strlen(prompt);
|
| 751 |
|
|
} else if (strcmp(prompt, last_prompt) != 0) {
|
| 752 |
|
|
l1 = gl_strlen(last_prompt);
|
| 753 |
|
|
l2 = gl_strlen(prompt);
|
| 754 |
|
|
gl_cnt = gl_cnt + l1 - l2;
|
| 755 |
|
|
strcpy(last_prompt, prompt);
|
| 756 |
|
|
gl_putc('\r');
|
| 757 |
|
|
gl_puts(prompt);
|
| 758 |
|
|
gl_pos = gl_shift;
|
| 759 |
|
|
gl_width = gl_termw - l2;
|
| 760 |
|
|
change = 0;
|
| 761 |
|
|
}
|
| 762 |
|
|
pad = (off_right)? gl_width - 1 : gl_cnt - gl_shift; /* old length */
|
| 763 |
|
|
backup = gl_pos - gl_shift;
|
| 764 |
|
|
if (change >= 0) {
|
| 765 |
|
|
gl_cnt = strlen(gl_buf);
|
| 766 |
|
|
if (change > gl_cnt)
|
| 767 |
|
|
change = gl_cnt;
|
| 768 |
|
|
}
|
| 769 |
|
|
if (cursor > gl_cnt) {
|
| 770 |
|
|
if (cursor != BUF_SIZE) /* BUF_SIZE means end of line */
|
| 771 |
|
|
gl_putc('\007');
|
| 772 |
|
|
cursor = gl_cnt;
|
| 773 |
|
|
}
|
| 774 |
|
|
if (cursor < 0) {
|
| 775 |
|
|
gl_putc('\007');
|
| 776 |
|
|
cursor = 0;
|
| 777 |
|
|
}
|
| 778 |
|
|
if (off_right || (off_left && cursor < gl_shift + gl_width - gl_scroll / 2))
|
| 779 |
|
|
extra = 2; /* shift the scrolling boundary */
|
| 780 |
|
|
else
|
| 781 |
|
|
extra = 0;
|
| 782 |
|
|
new_shift = cursor + extra + gl_scroll - gl_width;
|
| 783 |
|
|
if (new_shift > 0) {
|
| 784 |
|
|
new_shift /= gl_scroll;
|
| 785 |
|
|
new_shift *= gl_scroll;
|
| 786 |
|
|
} else
|
| 787 |
|
|
new_shift = 0;
|
| 788 |
|
|
if (new_shift != gl_shift) { /* scroll occurs */
|
| 789 |
|
|
gl_shift = new_shift;
|
| 790 |
|
|
off_left = (gl_shift)? 1 : 0;
|
| 791 |
|
|
off_right = (gl_cnt > gl_shift + gl_width - 1)? 1 : 0;
|
| 792 |
|
|
left = gl_shift;
|
| 793 |
|
|
new_right = right = (off_right)? gl_shift + gl_width - 2 : gl_cnt;
|
| 794 |
|
|
} else if (change >= 0) { /* no scroll, but text changed */
|
| 795 |
|
|
if (change < gl_shift + off_left) {
|
| 796 |
|
|
left = gl_shift;
|
| 797 |
|
|
} else {
|
| 798 |
|
|
left = change;
|
| 799 |
|
|
backup = gl_pos - change;
|
| 800 |
|
|
}
|
| 801 |
|
|
off_right = (gl_cnt > gl_shift + gl_width - 1)? 1 : 0;
|
| 802 |
|
|
right = (off_right)? gl_shift + gl_width - 2 : gl_cnt;
|
| 803 |
|
|
new_right = (gl_extent && (right > left + gl_extent))?
|
| 804 |
|
|
left + gl_extent : right;
|
| 805 |
|
|
}
|
| 806 |
|
|
pad -= (off_right)? gl_width - 1 : gl_cnt - gl_shift;
|
| 807 |
|
|
pad = (pad < 0)? 0 : pad;
|
| 808 |
|
|
if (left <= right) { /* clean up screen */
|
| 809 |
|
|
for (i=0; i < backup; i++)
|
| 810 |
|
|
gl_putc('\b');
|
| 811 |
|
|
if (left == gl_shift && off_left) {
|
| 812 |
|
|
gl_putc('$');
|
| 813 |
|
|
left++;
|
| 814 |
|
|
}
|
| 815 |
|
|
for (i=left; i < new_right; i++)
|
| 816 |
|
|
gl_putc(gl_buf[i]);
|
| 817 |
|
|
gl_pos = new_right;
|
| 818 |
|
|
if (off_right && new_right == right) {
|
| 819 |
|
|
gl_putc('$');
|
| 820 |
|
|
gl_pos++;
|
| 821 |
|
|
} else {
|
| 822 |
|
|
for (i=0; i < pad; i++) /* erase remains of prev line */
|
| 823 |
|
|
gl_putc(' ');
|
| 824 |
|
|
gl_pos += pad;
|
| 825 |
|
|
}
|
| 826 |
|
|
}
|
| 827 |
|
|
i = gl_pos - cursor; /* move to final cursor location */
|
| 828 |
|
|
if (i > 0) {
|
| 829 |
|
|
while (i--)
|
| 830 |
|
|
gl_putc('\b');
|
| 831 |
|
|
} else {
|
| 832 |
|
|
for (i=gl_pos; i < cursor; i++)
|
| 833 |
|
|
gl_putc(gl_buf[i]);
|
| 834 |
|
|
}
|
| 835 |
|
|
gl_pos = cursor;
|
| 836 |
|
|
}
|
| 837 |
|
|
|
| 838 |
|
|
static int
|
| 839 |
|
|
gl_tab(buf, offset, loc)
|
| 840 |
|
|
char *buf;
|
| 841 |
|
|
int offset;
|
| 842 |
|
|
int *loc;
|
| 843 |
|
|
/* default tab handler, acts like tabstops every 8 cols */
|
| 844 |
|
|
{
|
| 845 |
|
|
int i, count, len;
|
| 846 |
|
|
|
| 847 |
|
|
len = strlen(buf);
|
| 848 |
|
|
count = 8 - (offset + *loc) % 8;
|
| 849 |
|
|
for (i=len; i >= *loc; i--)
|
| 850 |
|
|
buf[i+count] = buf[i];
|
| 851 |
|
|
for (i=0; i < count; i++)
|
| 852 |
|
|
buf[*loc+i] = ' ';
|
| 853 |
|
|
i = *loc;
|
| 854 |
|
|
*loc = i + count;
|
| 855 |
|
|
return i;
|
| 856 |
|
|
}
|
| 857 |
|
|
|
| 858 |
|
|
/******************* strlen stuff **************************************/
|
| 859 |
|
|
|
| 860 |
|
|
void gl_strwidth(func)
|
| 861 |
|
|
size_t (*func)();
|
| 862 |
|
|
{
|
| 863 |
|
|
if (func != 0) {
|
| 864 |
|
|
gl_strlen = func;
|
| 865 |
|
|
}
|
| 866 |
|
|
}
|
| 867 |
|
|
|
| 868 |
|
|
/******************* History stuff **************************************/
|
| 869 |
|
|
|
| 870 |
|
|
#ifndef HIST_SIZE
|
| 871 |
|
|
#define HIST_SIZE 100
|
| 872 |
|
|
#endif
|
| 873 |
|
|
|
| 874 |
|
|
static int hist_pos = 0, hist_last = 0;
|
| 875 |
|
|
static char *hist_buf[HIST_SIZE];
|
| 876 |
|
|
|
| 877 |
|
|
static void
|
| 878 |
|
|
hist_init()
|
| 879 |
|
|
{
|
| 880 |
|
|
int i;
|
| 881 |
|
|
|
| 882 |
|
|
hist_buf[0] = "";
|
| 883 |
|
|
for (i=1; i < HIST_SIZE; i++)
|
| 884 |
|
|
hist_buf[i] = (char *)0;
|
| 885 |
|
|
}
|
| 886 |
|
|
|
| 887 |
|
|
void
|
| 888 |
|
|
gl_histadd(buf)
|
| 889 |
|
|
char *buf;
|
| 890 |
|
|
{
|
| 891 |
|
|
static char *prev = 0;
|
| 892 |
|
|
char *p = buf;
|
| 893 |
|
|
int len;
|
| 894 |
|
|
|
| 895 |
|
|
/* in case we call gl_histadd() before we call gl_getline() */
|
| 896 |
|
|
if (gl_init_done < 0) { /* -1 only on startup */
|
| 897 |
|
|
hist_init();
|
| 898 |
|
|
gl_init_done = 0;
|
| 899 |
|
|
}
|
| 900 |
|
|
while (*p == ' ' || *p == '\t' || *p == '\n')
|
| 901 |
|
|
p++;
|
| 902 |
|
|
if (*p) {
|
| 903 |
|
|
len = strlen(buf);
|
| 904 |
|
|
if (strchr(p, '\n')) /* previously line already has NL stripped */
|
| 905 |
|
|
len--;
|
| 906 |
|
|
if (prev == 0 || strlen(prev) != len ||
|
| 907 |
|
|
strncmp(prev, buf, len) != 0) {
|
| 908 |
|
|
hist_buf[hist_last] = hist_save(buf);
|
| 909 |
|
|
prev = hist_buf[hist_last];
|
| 910 |
|
|
hist_last = (hist_last + 1) % HIST_SIZE;
|
| 911 |
|
|
if (hist_buf[hist_last] && *hist_buf[hist_last]) {
|
| 912 |
|
|
free(hist_buf[hist_last]);
|
| 913 |
|
|
}
|
| 914 |
|
|
hist_buf[hist_last] = "";
|
| 915 |
|
|
}
|
| 916 |
|
|
}
|
| 917 |
|
|
hist_pos = hist_last;
|
| 918 |
|
|
}
|
| 919 |
|
|
|
| 920 |
|
|
static char *
|
| 921 |
|
|
hist_prev()
|
| 922 |
|
|
/* loads previous hist entry into input buffer, sticks on first */
|
| 923 |
|
|
{
|
| 924 |
|
|
char *p = 0;
|
| 925 |
|
|
int next = (hist_pos - 1 + HIST_SIZE) % HIST_SIZE;
|
| 926 |
|
|
|
| 927 |
|
|
if (hist_buf[hist_pos] != 0 && next != hist_last) {
|
| 928 |
|
|
hist_pos = next;
|
| 929 |
|
|
p = hist_buf[hist_pos];
|
| 930 |
|
|
}
|
| 931 |
|
|
if (p == 0) {
|
| 932 |
|
|
p = "";
|
| 933 |
|
|
gl_putc('\007');
|
| 934 |
|
|
}
|
| 935 |
|
|
return p;
|
| 936 |
|
|
}
|
| 937 |
|
|
|
| 938 |
|
|
static char *
|
| 939 |
|
|
hist_next()
|
| 940 |
|
|
/* loads next hist entry into input buffer, clears on last */
|
| 941 |
|
|
{
|
| 942 |
|
|
char *p = 0;
|
| 943 |
|
|
|
| 944 |
|
|
if (hist_pos != hist_last) {
|
| 945 |
|
|
hist_pos = (hist_pos+1) % HIST_SIZE;
|
| 946 |
|
|
p = hist_buf[hist_pos];
|
| 947 |
|
|
}
|
| 948 |
|
|
if (p == 0) {
|
| 949 |
|
|
p = "";
|
| 950 |
|
|
gl_putc('\007');
|
| 951 |
|
|
}
|
| 952 |
|
|
return p;
|
| 953 |
|
|
}
|
| 954 |
|
|
|
| 955 |
|
|
static char *
|
| 956 |
|
|
hist_save(p)
|
| 957 |
|
|
char *p;
|
| 958 |
|
|
/* makes a copy of the string */
|
| 959 |
|
|
{
|
| 960 |
|
|
char *s = 0;
|
| 961 |
|
|
int len = strlen(p);
|
| 962 |
|
|
char *nl = strchr(p, '\n');
|
| 963 |
|
|
|
| 964 |
|
|
if (nl) {
|
| 965 |
|
|
if ((s = malloc(len)) != 0) {
|
| 966 |
|
|
strncpy(s, p, len-1);
|
| 967 |
|
|
s[len-1] = 0;
|
| 968 |
|
|
}
|
| 969 |
|
|
} else {
|
| 970 |
|
|
if ((s = malloc(len+1)) != 0) {
|
| 971 |
|
|
strcpy(s, p);
|
| 972 |
|
|
}
|
| 973 |
|
|
}
|
| 974 |
|
|
if (s == 0)
|
| 975 |
|
|
gl_error("\n*** Error: hist_save() failed on malloc\n");
|
| 976 |
|
|
return s;
|
| 977 |
|
|
}
|
| 978 |
|
|
|
| 979 |
|
|
/******************* Search stuff **************************************/
|
| 980 |
|
|
|
| 981 |
|
|
static char search_prompt[101]; /* prompt includes search string */
|
| 982 |
|
|
static char search_string[100];
|
| 983 |
|
|
static int search_pos = 0; /* current location in search_string */
|
| 984 |
|
|
static int search_forw_flg = 0; /* search direction flag */
|
| 985 |
|
|
static int search_last = 0; /* last match found */
|
| 986 |
|
|
|
| 987 |
|
|
static void
|
| 988 |
|
|
search_update(c)
|
| 989 |
|
|
int c;
|
| 990 |
|
|
{
|
| 991 |
|
|
if (c == 0) {
|
| 992 |
|
|
search_pos = 0;
|
| 993 |
|
|
search_string[0] = 0;
|
| 994 |
|
|
search_prompt[0] = '?';
|
| 995 |
|
|
search_prompt[1] = ' ';
|
| 996 |
|
|
search_prompt[2] = 0;
|
| 997 |
|
|
} else if (c > 0) {
|
| 998 |
|
|
search_string[search_pos] = c;
|
| 999 |
|
|
search_string[search_pos+1] = 0;
|
| 1000 |
|
|
search_prompt[search_pos] = c;
|
| 1001 |
|
|
search_prompt[search_pos+1] = '?';
|
| 1002 |
|
|
search_prompt[search_pos+2] = ' ';
|
| 1003 |
|
|
search_prompt[search_pos+3] = 0;
|
| 1004 |
|
|
search_pos++;
|
| 1005 |
|
|
} else {
|
| 1006 |
|
|
if (search_pos > 0) {
|
| 1007 |
|
|
search_pos--;
|
| 1008 |
|
|
search_string[search_pos] = 0;
|
| 1009 |
|
|
search_prompt[search_pos] = '?';
|
| 1010 |
|
|
search_prompt[search_pos+1] = ' ';
|
| 1011 |
|
|
search_prompt[search_pos+2] = 0;
|
| 1012 |
|
|
} else {
|
| 1013 |
|
|
gl_putc('\007');
|
| 1014 |
|
|
hist_pos = hist_last;
|
| 1015 |
|
|
}
|
| 1016 |
|
|
}
|
| 1017 |
|
|
}
|
| 1018 |
|
|
|
| 1019 |
|
|
static void
|
| 1020 |
|
|
search_addchar(c)
|
| 1021 |
|
|
int c;
|
| 1022 |
|
|
{
|
| 1023 |
|
|
char *loc;
|
| 1024 |
|
|
|
| 1025 |
|
|
search_update(c);
|
| 1026 |
|
|
if (c < 0) {
|
| 1027 |
|
|
if (search_pos > 0) {
|
| 1028 |
|
|
hist_pos = search_last;
|
| 1029 |
|
|
} else {
|
| 1030 |
|
|
gl_buf[0] = 0;
|
| 1031 |
|
|
hist_pos = hist_last;
|
| 1032 |
|
|
}
|
| 1033 |
|
|
strcpy(gl_buf, hist_buf[hist_pos]);
|
| 1034 |
|
|
}
|
| 1035 |
|
|
if ((loc = strstr(gl_buf, search_string)) != 0) {
|
| 1036 |
|
|
gl_fixup(search_prompt, 0, loc - gl_buf);
|
| 1037 |
|
|
} else if (search_pos > 0) {
|
| 1038 |
|
|
if (search_forw_flg) {
|
| 1039 |
|
|
search_forw(0);
|
| 1040 |
|
|
} else {
|
| 1041 |
|
|
search_back(0);
|
| 1042 |
|
|
}
|
| 1043 |
|
|
} else {
|
| 1044 |
|
|
gl_fixup(search_prompt, 0, 0);
|
| 1045 |
|
|
}
|
| 1046 |
|
|
}
|
| 1047 |
|
|
|
| 1048 |
|
|
static void
|
| 1049 |
|
|
search_term()
|
| 1050 |
|
|
{
|
| 1051 |
|
|
gl_search_mode = 0;
|
| 1052 |
|
|
if (gl_buf[0] == 0) /* not found, reset hist list */
|
| 1053 |
|
|
hist_pos = hist_last;
|
| 1054 |
|
|
if (gl_in_hook)
|
| 1055 |
|
|
gl_in_hook(gl_buf);
|
| 1056 |
|
|
gl_fixup(gl_prompt, 0, gl_pos);
|
| 1057 |
|
|
}
|
| 1058 |
|
|
|
| 1059 |
|
|
static void
|
| 1060 |
|
|
search_back(new_search)
|
| 1061 |
|
|
int new_search;
|
| 1062 |
|
|
{
|
| 1063 |
|
|
int found = 0;
|
| 1064 |
|
|
char *p, *loc;
|
| 1065 |
|
|
|
| 1066 |
|
|
search_forw_flg = 0;
|
| 1067 |
|
|
if (gl_search_mode == 0) {
|
| 1068 |
|
|
search_last = hist_pos = hist_last;
|
| 1069 |
|
|
search_update(0);
|
| 1070 |
|
|
gl_search_mode = 1;
|
| 1071 |
|
|
gl_buf[0] = 0;
|
| 1072 |
|
|
gl_fixup(search_prompt, 0, 0);
|
| 1073 |
|
|
} else if (search_pos > 0) {
|
| 1074 |
|
|
while (!found) {
|
| 1075 |
|
|
p = hist_prev();
|
| 1076 |
|
|
if (*p == 0) { /* not found, done looking */
|
| 1077 |
|
|
gl_buf[0] = 0;
|
| 1078 |
|
|
gl_fixup(search_prompt, 0, 0);
|
| 1079 |
|
|
found = 1;
|
| 1080 |
|
|
} else if ((loc = strstr(p, search_string)) != 0) {
|
| 1081 |
|
|
strcpy(gl_buf, p);
|
| 1082 |
|
|
gl_fixup(search_prompt, 0, loc - p);
|
| 1083 |
|
|
if (new_search)
|
| 1084 |
|
|
search_last = hist_pos;
|
| 1085 |
|
|
found = 1;
|
| 1086 |
|
|
}
|
| 1087 |
|
|
}
|
| 1088 |
|
|
} else {
|
| 1089 |
|
|
gl_putc('\007');
|
| 1090 |
|
|
}
|
| 1091 |
|
|
}
|
| 1092 |
|
|
|
| 1093 |
|
|
static void
|
| 1094 |
|
|
search_forw(new_search)
|
| 1095 |
|
|
int new_search;
|
| 1096 |
|
|
{
|
| 1097 |
|
|
int found = 0;
|
| 1098 |
|
|
char *p, *loc;
|
| 1099 |
|
|
|
| 1100 |
|
|
search_forw_flg = 1;
|
| 1101 |
|
|
if (gl_search_mode == 0) {
|
| 1102 |
|
|
search_last = hist_pos = hist_last;
|
| 1103 |
|
|
search_update(0);
|
| 1104 |
|
|
gl_search_mode = 1;
|
| 1105 |
|
|
gl_buf[0] = 0;
|
| 1106 |
|
|
gl_fixup(search_prompt, 0, 0);
|
| 1107 |
|
|
} else if (search_pos > 0) {
|
| 1108 |
|
|
while (!found) {
|
| 1109 |
|
|
p = hist_next();
|
| 1110 |
|
|
if (*p == 0) { /* not found, done looking */
|
| 1111 |
|
|
gl_buf[0] = 0;
|
| 1112 |
|
|
gl_fixup(search_prompt, 0, 0);
|
| 1113 |
|
|
found = 1;
|
| 1114 |
|
|
} else if ((loc = strstr(p, search_string)) != 0) {
|
| 1115 |
|
|
strcpy(gl_buf, p);
|
| 1116 |
|
|
gl_fixup(search_prompt, 0, loc - p);
|
| 1117 |
|
|
if (new_search)
|
| 1118 |
|
|
search_last = hist_pos;
|
| 1119 |
|
|
found = 1;
|
| 1120 |
|
|
}
|
| 1121 |
|
|
}
|
| 1122 |
|
|
} else {
|
| 1123 |
|
|
gl_putc('\007');
|
| 1124 |
|
|
}
|
| 1125 |
|
|
}
|
