Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume38/input-edit/patch01

Text File | 1993-06-20 | 15KB | 497 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Chris Thewalt)
Subject: v38i004: input-edit - C input functions for line editing with history, Patch01
Message-ID: <[e-mail]>
X-Md4-Signature: bcdadcdf5c245e8f44979013c69b038f
Sender: [e-mail] (Kent Landfield)
Organization: Sterling Software
Date: Thu, 17 Jun 1993 18:20:49 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Chris Thewalt)
Posting-number: Volume 38, Issue 4
Archive-name: input-edit/patch01
Environment: unix, vms, dos, posix
Patch-To: input-edit: Volume 37, Issue 50

Changes since v37i050:
  * Added support for AIX, XENIX, TurboC, gcc (EMX) under OS/2
  * Added ^U (kill line) functionality
  * Added ESC-B/ESC-F backward/forward one word functionality
  * Made it possible to preload history with gl_histadd() before calling
    getline()

What is input-edit?

  Many interactive programs read input line by line, but would like to
  provide line editing and history functionality to the end-user that
  runs the program.

  The input-edit package provides that functionality.  As far as the
  programmer is concerned, the program only asks for the next line
  of input. However, until the user presses the RETURN key they can
  use emacs-style line editing commands and can traverse the history of
  lines previously typed.

  Other packages, such as GNU's readline, have greater capability but are
  also substantially larger.  Input-edit is small, since it uses neither
  stdio nor any termcap features, and is also quite portable.  It only
  uses \b to backspace and \007 to ring the bell on errors.  Since it
  cannot edit multiple lines it scrolls long lines left and right on
  the same line.

  Input edit uses classic (not ANSI) C, and should run on any Unix
  system (BSD, SYSV or POSIX), PC's under DOS with MSC or TurboC,
  PC's under OS/2 with gcc (EMX), or Vax/VMS.  Porting the package to
  new systems basicaly requires code to read a character when it is
  typed without echoing it, everything else should be OK.
---------------
#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# Contents:  v37i50.fix
# Wrapped by kent@sparky on Thu Jun 17 13:18:39 1993
PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:/usr/lbin ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive 1 (of 1)."'
if test -f 'v37i50.fix' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'v37i50.fix'\"
else
  echo shar: Extracting \"'v37i50.fix'\" \(11427 characters\)
  sed "s/^X//" >'v37i50.fix' <<'END_OF_FILE'
Xin the directory containing the input-edit v37i050 source code type:
X   patch -p < v37i50.fix
X
X*** CHANGES.orig    Sat May 15 11:49:16 1993
X--- CHANGES    Sun May 16 19:41:15 1993
X***************
X*** 1,3 ****
X--- 1,10 ----
X+ Changes from last release (v37i050 in comp.sources.misc)
X+ * Added support for AIX, XENIX, TurboC, gcc (EMX) under OS/2
X+ * Added ^U (kill line) functionality
X+ * Added ESC-B/ESC-F backward/forward one word functionality
X+ * Made it possible to preload history with gl_histadd() before calling
X+   getline()
X+
X  Changes from last release (v28i056 in comp.sources.misc)
X
X  * type-ahead saved in BSD mode (was OK in SYSV and POSIX)
X*** README.orig    Sat May 15 11:49:16 1993
X--- README    Tue May 18 09:30:00 1993
X***************
X*** 17,26 ****
X  edit multiple lines it scrolls long lines left and right on the same line.
X
X  Input edit uses classic (not ANSI) C, and should run on any Unix
X! system (BSD, SYSV or POSIX), PC's with the MSC compiler, or
X! Vax/VMS (untested by me).  Porting the package to new systems basicaly
X! requires code to read a character when it is typed without echoing it,
X! everything else should be OK.
X
X  I have run the package on:
X
X--- 17,26 ----
X  edit multiple lines it scrolls long lines left and right on the same line.
X
X  Input edit uses classic (not ANSI) C, and should run on any Unix
X! system (BSD, SYSV or POSIX), PC's under DOS with MSC or TurboC,  PC's under
X! OS/2 with gcc (EMX), or Vax/VMS.  Porting the package to new systems
X! basicaly requires code to read a character when it is typed without
X! echoing it, everything else should be OK.
X
X  I have run the package on:
X
X***************
X*** 27,33 ****
X      DECstation 5000, Ultrix 4.3 with cc 2.1 and gcc 2.3.3
X      Sun Sparc 2, SunOS 4.1.1, with cc
X      SGI Iris, IRIX System V.3, with cc
X!     PC, DRDOS 5.0, with MSC 6.0
X
X  The description below is broken into two parts, the end-user (editing)
X  interface and the programmer interface.  Send bug reports, fixes and
X--- 27,33 ----
X      DECstation 5000, Ultrix 4.3 with cc 2.1 and gcc 2.3.3
X      Sun Sparc 2, SunOS 4.1.1, with cc
X      SGI Iris, IRIX System V.3, with cc
X!     PC using DOS with MSC
X
X  The description below is broken into two parts, the end-user (editing)
X  interface and the programmer interface.  Send bug reports, fixes and
X***************
X*** 36,41 ****
X--- 36,46 ----
X  Chris Thewalt ([e-mail])
X  5/3/93
X
X+ Thanks to the following people who have provided enhancements and fixes:
X+   Ron Ueberschaer, Christoph Keller, Scott Schwartz, Steven List,
X+   DaviD W. Sanderson, Goran Bostrom, Michael Gleason, Glenn Kasten,
X+   Edin Hodzic, Eric J Bivona, Kai Uwe Rommel
X+
X  PS: I don't have, and don't want to add, a vi mode, sorry.
X
X  ************************** End-User Interface ***************************
X***************
X*** 48,53 ****
X--- 53,60 ----
X
X  ^A/^E    : Move cursor to beginning/end of the line.
X  ^F/^B   : Move cursor forward/backward one character.
X+ ESC-F    : Move cursor forward one word.
X+ ESC-B   : Move cursor backward one word.
X  ^D    : Delete the character under the cursor.
X  ^H, DEL : Delete the character to the left of the cursor.
X  ^K    : Kill from the cursor to the end of line.
X***************
X*** 69,74 ****
X--- 76,82 ----
X        any other editing character accepts the current match and
X        loads it into the buffer, terminating the search.
X  ^T    : Toggle the characters under and to the left of the cursor.
X+ ^U      : Deletes the entire line
X  ^Y    : Yank previously killed text back at current location.  Note that
X        this will overwrite or insert, depending on the current mode.
X  TAB    : By default adds spaces to buffer to get to next TAB stop
X*** getline.3.orig    Sat May 15 11:49:16 1993
X--- getline.3    Sat May 15 12:09:07 1993
X***************
X*** 251,262 ****
X  Move cursor to beginning of line.
X  .Tp "^B"
X  Move cursor left (back) 1 column.
X  .Tp "^D"
X  Delete the character under the cursor.
X  .Tp "^E"
X  Move cursor to end of line.
X  .Tp "^F"
X! Move point right (forward) 1 column.
X  .Tp "^H"
X  Delete the character left of the cursor.@
X  .Tp "^I"
X--- 251,266 ----
X  Move cursor to beginning of line.
X  .Tp "^B"
X  Move cursor left (back) 1 column.
X+ .Tp ESC-B
X+ Move cursor back one word.
X  .Tp "^D"
X  Delete the character under the cursor.
X  .Tp "^E"
X  Move cursor to end of line.
X  .Tp "^F"
X! Move cursor right (forward) 1 column.
X! .Tp ESC-F
X! Move cursor forward one word.
X  .Tp "^H"
X  Delete the character left of the cursor.@
X  .Tp "^I"
X***************
X*** 321,330 ****
X  but in the opposite direction through the history list.
X  .Tp "^T"
X  Transpose current and previous character.
X  .Tp "^Y"
X! Yank previously killed
X! .RB (\| ^K \|)
X! text back at current location.
X  .Tp BACKSPACE
X  Delete the character left of the cursor.
X  .Tp DEL
X--- 325,335 ----
X  but in the opposite direction through the history list.
X  .Tp "^T"
X  Transpose current and previous character.
X+ .Tp "^U"
X+ Kill the entire line (see
X+ .BR "^Y" \|).
X  .Tp "^Y"
X! Yank previously killed text back at current location.
X  .Tp BACKSPACE
X  Delete the character left of the cursor.
X  .Tp DEL
X*** getline.c.orig    Fri May 14 14:37:47 1993
X--- getline.c    Sun May 16 09:42:19 1993
X***************
X*** 1,6 ****
X  #ifndef lint
X  static char     rcsid[] =
X! "$Id: getline.c,v 3.7 1993/05/03 20:57:50 thewalt Exp thewalt $";
X  static char    *copyright = "Copyright (C) 1991, 1992, 1993, Chris Thewalt";
X  #endif
X
X--- 1,6 ----
X  #ifndef lint
X  static char     rcsid[] =
X! "$Id: getline.c,v 3.8 1993/05/16 16:41:51 thewalt Exp thewalt $";
X  static char    *copyright = "Copyright (C) 1991, 1992, 1993, Chris Thewalt";
X  #endif
X
X***************
X*** 13,18 ****
X--- 13,23 ----
X   * copyright notice and this permission notice appear in supporting
X   * documentation.  This software is provided "as is" without express or
X   * implied warranty.
X+  *
X+  * Thanks to the following people who have provided enhancements and fixes:
X+  *   Ron Ueberschaer, Christoph Keller, Scott Schwartz, Steven List,
X+  *   DaviD W. Sanderson, Goran Bostrom, Michael Gleason, Glenn Kasten,
X+  *   Edin Hodzic, Eric J Bivona, Kai Uwe Rommel
X   */
X
X  #include       "getline.h"
X***************
X*** 80,85 ****
X--- 85,91 ----
X  static void     gl_redraw();        /* issue \n and redraw all */
X  static void     gl_transpose();        /* transpose two chars */
X  static void     gl_yank();        /* yank killed text */
X+ static void     gl_word();        /* move a word */
X
X  static void     hist_init();    /* initializes hist pointers */
X  static char    *hist_next();    /* return ptr to next item */
X***************
X*** 96,101 ****
X--- 102,111 ----
X  extern int      write();
X  extern void     exit();
X
X+ #ifdef _IBMR2
X+ #define unix
X+ #endif
X+
X  #ifdef MSDOS
X  #include <bios.h>
X  #endif
X***************
X*** 109,114 ****
X--- 119,127 ----
X  struct termios  new_termios, old_termios;
X  #else /* not POSIX */
X  #include <sys/ioctl.h>
X+ #ifdef M_XENIX    /* does not really use bsd terminal interface */
X+ #undef TIOCSETN
X+ #endif /* M_XENIX */
X  #ifdef TIOCSETN        /* use BSD interface */
X  #include <sgtty.h>
X  struct sgttyb   new_tty, old_tty;
X***************
X*** 216,221 ****
X--- 229,253 ----
X  #endif
X  }
X
X+ #if MSDOS || __EMX__
X+ int pc_keymap(c)
X+ int c;
X+ {
X+     switch (c) {
X+     case 72: c = 16;   /* up -> ^P */
X+         break;
X+     case 80: c = 14;   /* down -> ^N */
X+         break;
X+     case 75: c = 2;    /* left -> ^B */
X+         break;
X+     case 77: c = 6;    /* right -> ^F */
X+         break;
X+     default: c = 0;    /* make it garbage */
X+     }
X+     return c;
X+ }
X+ #endif /* MSDOS || __EMCX__ */
X+
X  static int
X  gl_getc()
X  /* get a character without echoing it to screen */
X***************
X*** 229,247 ****
X  #ifdef MSDOS
X      c = _bios_keybrd(_NKEYBRD_READ);
X      if ((c & 0377) == 224) {
X!     switch (c = (c >> 8) & 0377) {
X!       case 72: c = 16;   /* up -> ^P */
X!         break;
X!           case 80: c = 14;   /* down -> ^N */
X!         break;
X!       case 75: c = 2;    /* left -> ^B */
X!         break;
X!           case 77: c = 6;    /* right -> ^F */
X!         break;
X!       default: c = 0;    /* make it garbage */
X!     }
X      } else {
X!     c = c & 0377;
X      }
X  #endif
X  #ifdef vms
X--- 261,283 ----
X  #ifdef MSDOS
X      c = _bios_keybrd(_NKEYBRD_READ);
X      if ((c & 0377) == 224) {
X!     c = pc_keymap((c >> 8) & 0377);
X!     } else {
X!     c &= 0377;
X!     }
X! #endif
X! #ifdef __TURBOC__
X!     while(!bioskey(1))
X!     ;
X!     c = bioskey(0) & 0xff;
X! #endif
X! #ifdef __EMX__
X! #define getch() _read_kbd(0, 1, 0)
X!     c = getch();
X!     if (c == 224 || c == 0) {
X!         c = pc_keymap(getch());
X      } else {
X!         c &= 0377;
X      }
X  #endif
X  #ifdef vms
X***************
X*** 393,399 ****
X                      gl_fixup(gl_prompt, loc, tmp);
X                  }
X          break;
X!           case '\013': gl_kill();                /* ^K */
X          break;
X            case '\014': gl_redraw();                /* ^L */
X          break;
X--- 429,435 ----
X                      gl_fixup(gl_prompt, loc, tmp);
X                  }
X          break;
X!           case '\013': gl_kill(gl_pos);            /* ^K */
X          break;
X            case '\014': gl_redraw();                /* ^L */
X          break;
X***************
X*** 417,422 ****
X--- 453,460 ----
X          break;
X            case '\024': gl_transpose();            /* ^T */
X          break;
X+               case '\025': gl_kill(0);                /* ^U */
X+         break;
X            case '\031': gl_yank();                /* ^Y */
X          break;
X            case '\033':                /* ansi arrow keys */
X***************
X*** 442,447 ****
X--- 480,489 ----
X                default: gl_putc('\007');         /* who knows */
X                  break;
X              }
X+         } else if (c == 'f' || c == 'F') {
X+             gl_word(1);
X+         } else if (c == 'b' || c == 'B') {
X+             gl_word(-1);
X          } else
X              gl_putc('\007');
X          break;
X***************
X*** 594,611 ****
X  }
X
X  static void
X! gl_kill()
X! /* delete from current position to the end of line */
X! {
X!     if (gl_pos < gl_cnt) {
X!     strcpy(gl_killbuf, gl_buf + gl_pos);
X!     gl_buf[gl_pos] = '\0';
X!     gl_fixup(gl_prompt, gl_pos, gl_pos);
X      } else
X      gl_putc('\007');
X  }
X
X  static void
X  gl_redraw()
X  /* emit a newline, reset and redraw prompt and current input line */
X  {
X--- 636,679 ----
X  }
X
X  static void
X! gl_kill(pos)
X! int pos;
X! /* delete from pos to the end of line */
X! {
X!     if (pos < gl_cnt) {
X!     strcpy(gl_killbuf, gl_buf + pos);
X!     gl_buf[pos] = '\0';
X!     gl_fixup(gl_prompt, pos, pos);
X      } else
X      gl_putc('\007');
X  }
X
X  static void
X+ gl_word(direction)
X+ int direction;
X+ /* move forward or backword one word */
X+ {
X+     int pos = gl_pos;
X+
X+     if (direction > 0) {        /* forward */
X+         while (!isspace(gl_buf[pos]) && pos < gl_cnt)
X+         pos++;
X+     while (isspace(gl_buf[pos]) && pos < gl_cnt)
X+         pos++;
X+     } else {                /* backword */
X+     if (pos > 0)
X+         pos--;
X+     while (isspace(gl_buf[pos]) && pos > 0)
X+         pos--;
X+         while (!isspace(gl_buf[pos]) && pos > 0)
X+         pos--;
X+     if (pos < gl_cnt && isspace(gl_buf[pos]))   /* move onto word */
X+         pos++;
X+     }
X+     gl_fixup(gl_prompt, -1, pos);
X+ }
X+
X+ static void
X  gl_redraw()
X  /* emit a newline, reset and redraw prompt and current input line */
X  {
X***************
X*** 795,800 ****
X--- 863,873 ----
X      char *p = buf;
X      int len;
X
X+     /* in case we call gl_histadd() before we call getline() */
X+     if (gl_init_done < 0) {        /* -1 only on startup */
X+         hist_init();
X+         gl_init_done = 0;
X+     }
X      while (*p == ' ' || *p == '\t' || *p == '\n')
X      p++;
X      if (*p) {
END_OF_FILE
  if test 11427 -ne `wc -c <'v37i50.fix'`; then
    echo shar: \"'v37i50.fix'\" unpacked with wrong size!
  fi
  # end of 'v37i50.fix'
fi
echo shar: End of archive 1 \(of 1\).
cp /dev/null ark1isdone
MISSING=""
for I in 1 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have the archive.
    rm -f ark[1-9]isdone
else
    echo You still must unpack the following archives:
    echo "        " ${MISSING}
fi
exit 0
exit 0 # Just in case...