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|
/*
* Copyright (C) 1996-2000 Michael R. Elkins <me@cs.hmc.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*/
#include "mutt.h"
#include "mutt_menu.h"
#include "mutt_curses.h"
#include "keymap.h"
#include "history.h"
#include <termios.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
/* macro to print control chars in reverse-video */
#define ADDCH(x) addch (IsPrint (x) ? x : (ColorDefs[MT_COLOR_MARKERS] | (x + '@')))
/* redraw flags for mutt_enter_string() */
enum
{
M_REDRAW_INIT = 1, /* recalculate lengths */
M_REDRAW_LINE, /* redraw entire line */
M_REDRAW_EOL, /* redraw from current position to eol */
M_REDRAW_PREV_EOL, /* redraw from curpos-1 to eol */
M_REDRAW_COMPLETION /* recalculate lengths after autocompletion */
};
/* Returns:
* 1 need to redraw the screen and call me again
* 0 if input was given
* -1 if abort.
*
*/
int _mutt_enter_string (unsigned char *buf, size_t buflen, int y, int x,
int flags, int multiple, char ***files, int *numfiles)
{
event_t event;
int curpos = 0; /* the location of the cursor */
int lastchar = 0; /* offset of the last char in the string */
int begin = 0; /* first character displayed on the line */
int ch; /* last typed character */
int width = COLS - x - 1; /* width of field */
int redraw = M_REDRAW_INIT; /* when/what to redraw */
int pass = (flags == M_PASS);
int first = 1;
int j;
char tempbuf[_POSIX_PATH_MAX] = "";
history_class_t hclass;
int tabs = 0; /* number of *consecutive* TABs */
char savebuf[HUGE_STRING] = ""; /* part after autocompletion point */
static int save_len = -1; /* length of savebuf */
static int last_begin = -1; /* saved value of begin */
if (last_begin >= 0)
{
/* Coming back after return (1); */
begin = last_begin;
redraw = M_REDRAW_COMPLETION;
last_begin = -1;
}
if (flags & (M_FILE | M_EFILE))
hclass = HC_FILE;
else if (flags & M_CMD)
hclass = HC_CMD;
else if (flags & M_ALIAS)
hclass = HC_ALIAS;
else if (flags & M_COMMAND)
hclass = HC_COMMAND;
else if (flags & M_PATTERN)
hclass = HC_PATTERN;
else
hclass = HC_OTHER;
FOREVER
{
if (redraw)
{
if (redraw == M_REDRAW_INIT)
{
/* full redraw */
lastchar = curpos = mutt_strlen ((char *) buf);
begin = lastchar - width;
}
else if (redraw == M_REDRAW_COMPLETION)
{
/* full redraw, move to the point of autocompletion */
lastchar = mutt_strlen ((char *) buf);
curpos = lastchar - save_len;
if (curpos >= begin + width - 1 || curpos <= begin)
begin = curpos - width / 2;
}
if (begin < 0)
begin = 0;
switch (redraw)
{
case M_REDRAW_PREV_EOL:
j = curpos - 1;
break;
case M_REDRAW_EOL:
j = curpos;
break;
default:
j = begin;
}
move (y, x + j - begin);
{
int n = (lastchar < begin + width) ? lastchar : begin + width;
n = (n > j) ? n - j : 0;
addnstr ((char *)&buf[j], n);
}
clrtoeol ();
if (redraw != M_REDRAW_INIT)
move (y, x + curpos - begin);
redraw = 0;
}
mutt_refresh ();
/* first look to see if a keypress is an editor operation. km_dokey()
* returns 0 if there is no entry in the keymap, so restore the last
* keypress and continue normally.
*/
if ((ch = km_dokey (MENU_EDITOR)) == -1)
{
buf[curpos] = 0;
return (-1);
}
if (ch != OP_NULL)
{
first = 0; /* make sure not to clear the buffer */
if (ch != OP_EDITOR_COMPLETE)
tabs = 0;
switch (ch)
{
case OP_EDITOR_HISTORY_UP:
if (!pass)
{
strfcpy ((char *) buf, mutt_history_prev (hclass), buflen);
redraw = M_REDRAW_INIT;
}
break;
case OP_EDITOR_HISTORY_DOWN:
if (!pass)
{
strfcpy ((char *) buf, mutt_history_next (hclass), buflen);
redraw = M_REDRAW_INIT;
}
break;
case OP_EDITOR_BACKSPACE:
if (curpos == 0)
{
BEEP ();
break;
}
for (j = curpos ; j < lastchar ; j++)
buf[j - 1] = buf[j];
curpos--;
lastchar--;
if (!pass)
{
if (curpos > begin)
{
if (lastchar == curpos)
{
move (y, x + curpos - begin);
delch ();
}
else
redraw = M_REDRAW_EOL;
}
else
{
begin -= width / 2;
redraw = M_REDRAW_LINE;
}
}
break;
case OP_EDITOR_BOL:
/* reposition the cursor at the begininning of the line */
curpos = 0;
if (!pass)
{
if (begin)
{
/* the first char is not displayed, so readjust */
begin = 0;
redraw = M_REDRAW_LINE;
}
else
move (y, x);
}
break;
case OP_EDITOR_EOL:
curpos = lastchar;
if (!pass)
{
if (lastchar < begin + width)
move (y, x + lastchar - begin);
else
{
begin = lastchar - width / 2;
redraw = M_REDRAW_LINE;
}
}
break;
case OP_EDITOR_KILL_LINE:
lastchar = curpos = 0;
if (!pass)
{
begin = 0;
redraw = M_REDRAW_LINE;
}
break;
case OP_EDITOR_KILL_EOL:
lastchar = curpos;
if (!pass
|