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deb-goldedplus/golded3/geedit.cpp
Alexander S. Aganichev f03086f6a7 Wrapping fixes, logo painted to yellow by default
2001-03-20 05:21:46 +00:00

2695 lines
66 KiB
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// ------------------------------------------------------------------
// GoldED+
// Copyright (C) 1990-1999 Odinn Sorensen
// Copyright (C) 1999-2000 Alexander S. Aganichev
// ------------------------------------------------------------------
// 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 02111-1307 USA
// ------------------------------------------------------------------
// $Id$
// ------------------------------------------------------------------
// The Internal Editor (IE), part 1.
// ------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "geedit.h"
#endif
// ------------------------------------------------------------------
#include <golded.h>
#include <geedit.h>
// ------------------------------------------------------------------
// Globals
Line* Edit__killbuf = NULL;
Line* Edit__pastebuf = NULL;
Path Edit__exportfilename = {""};
UndoItem** UndoItem::last_item;
// ------------------------------------------------------------------
#ifndef NDEBUG
void IEclass::debugtest(char* __test, int __a, int __b, char* __file, int __line, int __values) {
#if defined(GFTRK_ENABLE)
int _tmp = __gftrk_on;
__gftrk_on = false;
#endif
savefile(MODE_UPDATE);
#if defined(GFTRK_ENABLE)
__gftrk_on = _tmp;
#endif
if(__values)
w_infof(" Range check: (%s) <%i,%i> [%s,%u] ", __test, __a, __b, __file, __line);
else
w_infof(" Range check: (%s) [%s,%u] ", __test, __file, __line);
update_statusline(LNG->EscOrContinue);
SayBibi();
while(kbxhit())
kbxget();
gkey _key = kbxget();
w_info(NULL);
if(_key == Key_Esc) {
LOG.errtest(__file, __line);
LOG.printf("! An internal editor range check failed.");
if(__values)
LOG.printf(": Details: (%s) <%i,%i>.", __test, __a, __b);
else
LOG.printf(": Details: (%s).", __test);
LOG.printf(": Details: r%u,c%u,mr%u,mc%u,i%u,dm%u,qm%u,eqm%u.",
row, col, maxrow, maxcol, insert,
CFG->dispmargin, CFG->quotemargin, EDIT->QuoteMargin()
);
LOG.printf("+ Advice: Report to the Author.");
TestErrorExit();
}
}
#endif
// ------------------------------------------------------------------
// Make sure line type is correct
void IEclass::setlinetype(Line* __line) {
_test_halt(__line == NULL);
__line->type &= ~GLINE_ALL;
__line->type |= is_quote(__line->txt.c_str()) ? GLINE_QUOT : (__line->txt[0] == CTRL_A) ? GLINE_HIDD : 0;
}
// ------------------------------------------------------------------
// Insert character in string at position
// ------------------------------------------------------------------
// Zero-based
int IEclass::dispchar(vchar __ch, int attr) {
if(__ch == NUL) // possible if line empty
__ch = ' ';
if(__ch != '\n') {
if(__ch == ' ')
__ch = EDIT->CharSpace();
}
else {
__ch = EDIT->CharPara();
}
int atr;
vchar chr;
editwin.getc(crow, ccol, &atr, &chr);
editwin.printc(crow, ccol, attr == -1 ? atr : attr, __ch);
return atr;
}
// ------------------------------------------------------------------
void IEclass::cursoroff() {
vcurhide();
}
// ------------------------------------------------------------------
void IEclass::cursoron() {
vcurshow();
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::scrollup(int __scol, int __srow, int __ecol, int __erow, int __lines) {
editwin.scroll_box_up(__srow, __scol, __erow, __ecol, __lines);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::scrolldown(int __scol, int __srow, int __ecol, int __erow, int __lines) {
editwin.scroll_box_down(__srow, __scol, __erow, __ecol, __lines);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::prints(int wrow, int wcol, int atr, const char* str) {
editwin.prints(wrow, wcol, atr, str);
}
// ------------------------------------------------------------------
Line* IEclass::findfirstline() {
GFTRK("Editfindfirstline");
if(not currline)
return NULL;
// Rewind to the first line
Line* _firstline = currline;
while(_firstline->prev)
_firstline = _firstline->prev;
GFTRK(NULL);
return _firstline;
}
// ------------------------------------------------------------------
// Find out what number the current line is and put it in "thisrow"
void IEclass::getthisrow(Line* __currline) {
GFTRK("Editgetthisrow");
Line* _templine = findfirstline();
thisrow = 0;
while((_templine != __currline) and _templine->next) {
_templine = _templine->next;
thisrow++;
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::gotorowcol(uint __col, uint __row) {
GFTRK("Editgotorowcol");
_test_haltab(__col > maxcol, __col, maxcol);
_test_haltab(__row > maxrow, __row, maxrow);
editwin.move_cursor(__row, __col);
ccol = __col;
crow = __row;
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::dispstring(const char* __string, uint __row, int attr, Line* line) {
GFTRK("Editdispstring");
_test_halt(__string == NULL);
_test_haltab(__row > maxrow, __row, maxrow);
// Get string length
uint _length = strlen(__string);
// String longer than window width?
_test_haltab(_length > (maxcol+1), _length, (maxcol+1));
_length = MinV(_length, (maxcol+1));
// Buffer for translation to visual representation
char _buf[EDIT_BUFLEN];
// Space-pad and nul-terminate the buffer
memset(_buf, ' ', maxcol+1);
_buf[maxcol+1] = NUL;
// Copy/translate string into buffer
if(attr == -1) {
char* _bufptr = _buf;
uint _position = 0;
const char* __str = __string;
while(_position < _length) {
switch(*__str) {
case ' ': *_bufptr = EDIT->CharSpace(); break;
case '\n': *_bufptr = EDIT->CharPara(); break;
default: *_bufptr = *__str;
}
_position++;
_bufptr++;
__str++;
}
}
else {
if(_length)
memcpy(_buf, __string, _length);
}
// mark selected block
if(line and (blockcol != -1)) {
int selected = 0;
for(Line *ln = findfirstline(); ln and ln != line; ln = ln->next) {
if(ln == currline)
selected ^= 1;
if(ln->type & GLINE_BLOK)
selected ^= 1;
}
if((line->type & GLINE_BLOK) and (line == currline)) {
int begblock = ((col < blockcol) ? col : blockcol) - mincol;
int endblock = ((col > blockcol) ? col : blockcol) - mincol;
char savechar = _buf[begblock];
_buf[begblock] = NUL;
StyleCodeHighlight(_buf, __row, mincol, false, attr);
_buf[begblock] = savechar;
savechar = _buf[endblock];
_buf[endblock] = NUL;
StyleCodeHighlight(_buf+begblock, __row, mincol+begblock, false, C_READA);
_buf[endblock] = savechar;
StyleCodeHighlight(_buf+endblock, __row, mincol+endblock, false, attr);
}
else if((line->type & GLINE_BLOK) or (line == currline)) {
int blockmark = ((line->type & GLINE_BLOK) ? blockcol : col) - mincol;
char savechar = _buf[blockmark];
_buf[blockmark] = NUL;
StyleCodeHighlight(_buf, __row, mincol, false, selected ? C_READA : attr);
_buf[blockmark] = savechar;
StyleCodeHighlight(_buf+blockmark, __row, mincol+blockmark, false, selected ? attr : C_READA);
}
else
StyleCodeHighlight(_buf, __row, mincol, false, selected ? C_READA : attr);
}
else
StyleCodeHighlight(_buf, __row, mincol, false, attr);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::setcolor(Line* __line) {
// Set window attribute
if(__line->type & GLINE_HIDD)
editwin.text_color(C_READKH);
else if(__line->type & GLINE_KLUD)
editwin.text_color(C_READK);
else if(__line->type & GLINE_TAGL)
editwin.text_color(C_READG);
else if(__line->type & GLINE_TEAR)
editwin.text_color(C_READT);
else if(__line->type & GLINE_ORIG)
editwin.text_color(C_READO);
else if(__line->type & GLINE_QUOT)
editwin.text_color(quotecolor(__line->txt.c_str()));
else if(__line->type & GLINE_SIGN)
editwin.text_color(C_READS);
else
editwin.text_color(C_READW);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::displine(Line* __line, uint __row) {
GFTRK("Editdispline");
_test_halt(__line == NULL);
_test_haltab(__row > maxrow, __row, maxrow);
// Display line
setcolor(__line);
dispstring(__line->txt.c_str(), __row, -1, __line);
GFTRK(NULL);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::clreol(int __col, int __row) {
GFTRK("Editclreol");
if(__col == -1)
__col = ccol;
if(__row == -1)
__row = crow;
if((uint)__col <= maxcol)
editwin.fill(__row, __col, __row, maxcol, ' ', C_READW);
GFTRK(NULL);
}
// ------------------------------------------------------------------
// Zero-based
void IEclass::refresh(Line* __currline, uint __row) {
GFTRK("Editrefresh");
_test_halt(__currline == NULL);
cursoroff();
// Display as many lines as we can
while(__currline and (__row <= maxrow)) {
displine(__currline, __row++);
__currline = __currline->next;
}
// If we ran out of lines, blank the rest
if(__row <= maxrow) {
vchar vbuf[256];
for(int c = 0; c < maxcol+1; c++)
vbuf[c] = _box_table(W_BREAD, 1);
vbuf[maxcol+1] = NUL;
wprintvs(__row++, mincol, C_READB|ACSET, vbuf);
while(__row <= maxrow)
dispstring("", __row++);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
Line* IEclass::insertlinebelow(Line* __currline, const char* __text, long __batch_mode) {
GFTRK("Editinsertlinebelow");
Line* _nextline = new Line(__text ? __text : "");
throw_xnew(_nextline);
if(__currline) {
_nextline->prev = __currline;
_nextline->next = __currline->next;
if(_nextline->next)
_nextline->next->prev = _nextline;
__currline->next = _nextline;
}
Undo->PushItem(EDIT_UNDO_NEW_LINE|batch_mode|__batch_mode, _nextline);
GFTRK(NULL);
return _nextline;
}
// ------------------------------------------------------------------
// Zero-based
int IEclass::downoneline(uint __row) {
GFTRK("Editdownoneline");
_test_haltab(__row > maxrow, __row, maxrow);
thisrow++;
if(__row == maxrow)
scrollup(mincol, minrow, maxcol, maxrow);
else
__row++;
gotorowcol(mincol, __row);
GFTRK(NULL);
return __row;
}
// ------------------------------------------------------------------
void IEclass::GoEOL() {
GFTRK("EditGoEOL");
// Move cursor to the last char on the line
col = currline->txt.length();
if(currline->txt[col-1] == '\n')
--col;
// String must not be longer than the window width
_test_haltab(col > maxcol, col, maxcol);
if(blockcol != -1)
displine(currline, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoUp() {
GFTRK("EditGoUp");
_test_haltab(row < minrow, row, minrow);
if(currline->prev) {
currline = currline->prev;
thisrow--;
if(row == minrow) {
scrolldown(mincol, row, maxcol, maxrow);
if(blockcol != -1)
displine(currline->next, row+1);
displine(currline, row);
}
else {
row--;
if(blockcol != -1) {
displine(currline->next, row+1);
displine(currline, row);
}
}
if((col+1) > currline->txt.length())
GoEOL();
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoDown() {
GFTRK("EditGoDown");
_test_haltab(row > maxrow, row, maxrow);
if(currline->next) {
currline = currline->next;
thisrow++;
if(row == maxrow) {
scrollup(mincol, minrow, maxcol, maxrow);
if(blockcol != -1)
displine(currline->prev, row-1);
displine(currline,row);
}
else {
row++;
if(blockcol != -1) {
displine(currline->prev, row-1);
displine(currline, row);
}
}
if((col+1) > currline->txt.length())
GoEOL();
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoLeft() {
GFTRK("EditGoLeft");
_test_haltab(col < mincol, col, mincol);
if(col == mincol) {
if(currline->prev) {
GoUp();
GoEOL();
if(currline->txt[col] != '\n')
col--;
}
}
else
col--;
if(blockcol != -1)
displine(currline, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoRight() {
GFTRK("EditGoRight");
_test_haltab(col > maxcol, col, maxcol);
if((col == maxcol) or (col >= currline->txt.length()) or (currline->txt[col] == '\n')) {
if(currline->next != NULL) {
GoDown();
col = mincol;
}
}
else
col++;
if(blockcol != -1)
displine(currline, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
Line* IEclass::wrapit(Line** __currline, uint* __curr_col, uint* __curr_row, bool __display) {
_test_halt(__currline == NULL);
_test_halt(*__currline == NULL);
uint _quotelen;
char _quotebuf[100];
uint _curscol = *__curr_col;
uint _cursrow = *__curr_row;
uint _thisrow = *__curr_row;
Line* _thisline = *__currline;
Line* _lastadded = _thisline;
bool _wrapped_above = false;
// Start wrapping from the current line onwards
while(_thisline) {
// Length of this line
uint _thislen = _thisline->txt.length();
uint _wrapmargin = (_thisline->type & GLINE_QUOT) ? marginquotes : margintext;
// Does this line need wrapping?
if(_thislen >= _wrapmargin) {
// Reset quote string length
_quotelen = 0;
// Is this line quoted?
if(_thisline->type & GLINE_QUOT) {
// Get quote string and length
GetQuotestr(_thisline->txt.c_str(), _quotebuf, &_quotelen);
}
// wrapmargin = 40
// 1111111111222222222233333333334444444444
// 01234567890123456789012345678901234567890123456789
// --------------------------------------------------
// v- wrapptr
// Case 1: this is another test with a bit of text to wrap.
// Case 2: this is a test with a line that need wrapping.
// Case 3: thisxisxaxtestxwithxaxlinexthatxneedxwrapping.
// Case 4: >thisxisxaxtestxwithxaxlinexthatxneedxwrapping.
// Point to the last char inside the margin
int _wrappos = _wrapmargin - 1;
// Locate the word to be wrapped
// Did we find a space?
if(_thisline->txt[_wrappos] == ' ') {
// Case 1: A space was found as the last char inside the margin
//
// Now we must locate the first word outside the margin.
// NOTE: Leading spaces to this word will be nulled out!
// Begin at the first char outside the margin
if((_wrappos + 1) <= maxcol)
_wrappos++;
}
else {
// Case 2: A non-space was found as the last char inside the margin
//
// Now we must locate the beginning of the word we found.
// Keep copy of original pointer
int _atmargin = _wrappos;
// Search backwards until a space or the beginning of the line is found
while(_wrappos > 0 and (_thisline->txt[_wrappos-1] != ' '))
_wrappos--;
// Check if we hit leading spaces
int _spacepos = _wrappos;
while(_spacepos > 0) {
_spacepos--;
if(_thisline->txt[_spacepos] != ' ')
break;
}
// Did we search all the way back to the beginning of the line?
if(_wrappos == 0 or _wrappos == _quotelen or _thisline->txt[_spacepos] == ' ') {
// Case 3: There are no spaces within the margin or we hit leading spaces
// We have to break it up at the margin
_wrappos = _atmargin;
}
}
// The wrapptr now points to the location to be wrapped or NUL
// Get length of the wrapped part
uint _wraplen = _thisline->txt.length() - _wrappos;
// Is the line hard-terminated?
if(_thisline->txt.find('\n', _wrappos) != _thisline->txt.npos) {
// The line is hard-terminated.
//
// The wrapped part must be placed on a new line below.
Line* _wrapline = _lastadded = insertlinebelow(_thisline, NULL, BATCH_MODE);
// Copy the quote string, if any, to the new line first
if(_quotelen)
_wrapline->txt = _quotebuf;
else
_wrapline->txt = "";
// Copy/append the wrapped part to the new line
_wrapline->txt += _thisline->txt.substr(_wrappos);
// Saves pointer to a line where from the wrapped part was copied, its begining
// and length. While in Undo, appends the copied part to previous line and deletes
// it on current, moving the rest over deleted.
Undo->PushItem(EDIT_UNDO_WRAP_TEXT|BATCH_MODE, _thisline, _quotelen, _wraplen);
_wrapline->type = _thisline->type;
// Make sure the type of the line is correct
setlinetype(_wrapline);
if(__display) {
// Is there at least one line below this one?
if(_thisrow < maxrow) {
// Scroll the lines below to make room for the new line
scrolldown(mincol, _thisrow+1, maxcol, maxrow);
// Display the new line
if(_wrapline->txt.length() <= (maxcol+1))
displine(_wrapline, _thisrow+1);
}
}
}
else {
// The line is not hard-terminated
//
// The wrapped part must be inserted into the next line
// Indicate that one or more lines were wrapped in this way
_wrapped_above = true;
// Pointer to the next line
Line* _nextline = _thisline->next;
// Flag to indicate if a new line was added below
bool _line_added_below = false;
// Is there no next line or is the next line quoted?
if((_nextline == NULL) or (_nextline->type & GLINE_QUOT)) {
// The wrapped part must be placed on a new line below
_lastadded = _nextline = insertlinebelow(_thisline, "", BATCH_MODE);
_line_added_below = true;
}
// Was this line quoted?
if(_quotelen) {
// Copy the quote string
_nextline->txt.insert(0, _quotebuf, _quotelen);
}
_nextline->txt.insert(_quotelen, _thisline->txt.substr(_wrappos));
Undo->PushItem(EDIT_UNDO_WRAP_TEXT|BATCH_MODE, _thisline, 0, _quotelen+_wraplen);
// Make sure the type of the line is correct
setlinetype(_nextline);
if(__display) {
// Is there at least one line below this one?
if(_line_added_below and (_thisrow < maxrow)) {
// Scroll the lines below to make room for the new line
scrolldown(mincol, _thisrow+1, maxcol, maxrow);
}
// Display the new/wrapped line
if((_thisrow+1) <= maxrow and _nextline->txt.length() <= (maxcol+1))
displine(_nextline, _thisrow+1);
}
}
// Was this line truncated at space?
bool truncated_at_space = isspace(_thisline->txt[_wrappos]);
// Truncate at the wrapping location
_thisline->txt.erase(_wrappos);
// Was this line quoted?
if(_quotelen) {
// Trim spaces off the end of the line
int _trimpos = _wrappos - 1;
if(isspace(_thisline->txt[_trimpos])) {
while(_trimpos > 0 and isspace(_thisline->txt[_trimpos-1]))
_trimpos--;
if(_quotelen and (_trimpos < _quotelen))
_trimpos++;
Undo->PushItem(EDIT_UNDO_OVR_CHAR|BATCH_MODE, _thisline, _trimpos);
_thisline->txt.erase(_trimpos);
}
Undo->PushItem((truncated_at_space?EDIT_UNDO_OVR_CHAR:EDIT_UNDO_INS_CHAR)|BATCH_MODE, _thisline, _trimpos+1);
// Append a new linefeed
_thisline->txt += "\n";
}
// Make sure the line type still is correct
setlinetype(_thisline);
if(__display) {
// Display this line after wrapping
if(_thisrow <= maxrow)
displine(_thisline, _thisrow);
}
_thislen = _thisline->txt.length();
// If we are on the cursor line, check if the cursor char was wrapped
if((_thisrow == _cursrow) and (_thislen <= _curscol)) {
_curscol = _quotelen + ((_curscol > _wrappos) ? _curscol-_wrappos : 0);
_cursrow++;
UndoItem* i = Undo->last_item;
do { i = i->prev; } while(i->action & BATCH_MODE);
if(i->col.num >= i->line->txt.length()) {
i->action |= PREV_LINE;
i->col.sav = i->col.num;
i->col.num = _curscol;
}
}
}
// If this line is hard-terminated, we have finished wrapping
// Unless the next line has grown too large
if(_thisline->txt.find('\n') != _thisline->txt.npos) {
if(_thisline->next == NULL)
break;
_wrapmargin = (_thisline->next->type & GLINE_QUOT) ? marginquotes : margintext;
if(_thisline->next->txt.length() <= _wrapmargin)
break;
}
// Go to the next line
_thisline = _thisline->next;
_thisrow++;
}
if(__display) {
// Display the current line after wrapping
if(*__curr_row <= maxrow)
displine(*__currline, *__curr_row);
// Was the line or lines above wrapped?
if(_wrapped_above) {
// Display the last line in the paragraph
if((_thisrow <= maxrow) and _thisline)
displine(_thisline, _thisrow);
}
}
// Move to the next line if the cursor was wrapped
if(_cursrow != *__curr_row) {
int i = *__curr_row;
while ((i++ != _cursrow) and (__currline != NULL))
*__currline = (*__currline)->next;
if(_cursrow > maxrow) {
_cursrow = maxrow;
if(__display) {
scrollup(mincol, minrow, maxcol, maxrow);
displine(*__currline, *__curr_row);
}
}
}
// Update cursor position
*__curr_row = _cursrow;
*__curr_col = _curscol;
GFTRK(NULL);
return _lastadded;
}
// ------------------------------------------------------------------
Line* IEclass::wrapdel(Line** __currline, uint* __curr_col, uint* __curr_row, bool __display) {
GFTRK("Editwrapdel");
Line *tmp = wrapit(__currline, __curr_col, __curr_row, __display);
GFTRK(NULL);
return tmp;
}
// ------------------------------------------------------------------
Line* IEclass::wrapins(Line** __currline, uint* __curr_col, uint* __curr_row, bool __display) {
GFTRK("Editwrapins");
Line *tmp = wrapit(__currline, __curr_col, __curr_row, __display);
GFTRK(NULL);
return tmp;
}
// ------------------------------------------------------------------
void IEclass::insertchar(char __ch) {
GFTRK("Editinsertchar");
uint _currline_len = currline->txt.length();
#ifndef NDEBUG
_test_haltab(col > _currline_len, col, _currline_len);
#endif
// Insert or overwrite the char, replacing the block if any
if((selecting ? (BlockCut(true), batch_mode = BATCH_MODE) : false) or
(col >= _currline_len) or (currline->txt[col] == '\n') or insert) {
if(not isspace(__ch) and (col == mincol)) {
// if previous line was wrapped on non-space character
if(currline->prev and not currline->prev->txt.empty() and
(currline->prev->txt.find('\n') == currline->prev->txt.npos) and
not isspace(currline->prev->txt[currline->prev->txt.length()-1])) {
GoUp();
GoEOL();
}
}
Undo->PushItem(EDIT_UNDO_INS_CHAR|batch_mode);
currline->txt.insert(col, 1, __ch);
} else {
Undo->PushItem(EDIT_UNDO_OVR_CHAR|batch_mode);
currline->txt[col] = __ch;
}
batch_mode = BATCH_MODE;
// Make sure the line type still is correct
setlinetype(currline);
// Move cursor
col++;
wrapins(&currline, &col, &row);
// Adjust cursor position and display if necessary
if(col > maxcol) {
if(currline->next) {
currline = currline->next;
col = mincol;
row++;
if(row > maxrow) {
row = maxrow;
scrollup(mincol, minrow, maxcol, maxrow);
displine(currline, row);
}
}
else {
col = maxcol;
}
}
gotorowcol(col, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::DelChar() {
GFTRK("EditDelChar");
Line* _thisline = currline;
Line* _nextline = currline->next;
uint _thislen = _thisline->txt.length();
// Cannot delete at or beyond the nul-terminator
if(col < _thislen) {
Undo->PushItem(EDIT_UNDO_DEL_CHAR|batch_mode);
_thisline->txt.erase(col, 1);
batch_mode = BATCH_MODE;
}
// Did we delete the last char on the line or
// was the cursor at or beyond the nul-terminator?
// And is there a next line at all?
if(((col+1) >= _thislen) and _nextline) {
// Join the next line to this line
// Is the next line quoted?
// And is the cursor column non-zero?
uint _quotelen = 0;
if((_nextline->type & GLINE_QUOT) and col) {
// Get quote string length
char _dummybuf[100];
GetQuotestr(_nextline->txt.c_str(), _dummybuf, &_quotelen);
}
// Copy the next line's text to this line without quote string
const char *_nexttext = _nextline->txt.c_str()+_quotelen;
_thisline->txt += _nexttext + (col ? strspn(_nexttext, " ") : 0);
Undo->PushItem(EDIT_UNDO_CUT_TEXT|batch_mode, _thisline, col);
// Relink this line
_thisline->next = _nextline->next;
if(_thisline->next)
_thisline->next->prev = _thisline;
Undo->PushItem(EDIT_UNDO_DEL_LINE|BATCH_MODE, _nextline);
}
else if((_thislen > 1) and (_thisline->txt.c_str()[_thislen-2] != '\n') and _nextline and not (_nextline->type & GLINE_QUOT)) {
_thisline->txt += _nextline->txt.c_str();
Undo->PushItem(EDIT_UNDO_CUT_TEXT|batch_mode, _thisline, _thislen-1);
// Relink this line
_thisline->next = _nextline->next;
if(_thisline->next)
_thisline->next->prev = _thisline;
Undo->PushItem(EDIT_UNDO_DEL_LINE|BATCH_MODE, _nextline);
}
batch_mode = BATCH_MODE;
// Make sure the line type still is correct
setlinetype(_thisline);
// Rewrap this line
wrapdel(&currline, &col, &row);
refresh(currline, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::DelLeft() {
GFTRK("EditDelLeft");
// Cannot backspace from the first column on the first line in the msg
if(currline->prev == NULL)
if(col == mincol) {
GFTRK(NULL);
return;
}
// Go left(/up) and delete the character there
GoLeft();
DelChar();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoWordLeft() {
GFTRK("EditGoWordLeft");
if(col == 0) {
if(currline->prev) {
GoUp();
GoEOL();
}
}
else {
col--;
if(not isxalnum(currline->txt[col])) {
while(not isxalnum(currline->txt[col]) and (col > 0))
col--;
while(isxalnum(currline->txt[col]) and (col > 0))
col--;
}
else {
while(isxalnum(currline->txt[col]) and (col > 0))
col--;
}
if(col != 0)
col++;
if(blockcol != -1)
displine(currline, row);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::GoWordRight() {
GFTRK("EditGoWordRight");
if((col >= currline->txt.length()) or (currline->txt[col] == '\n')) {
if(currline->next) {
GoDown();
col = 0;
}
}
else {
size_t len = currline->txt.length();
if(not isxalnum(currline->txt[col])) {
while(not isxalnum(currline->txt[col]) and ((col+1) <= len))
col++;
}
else {
while(isxalnum(currline->txt[col]) and ((col+1) <= len))
col++;
while(not isxalnum(currline->txt[col]) and ((col+1) <= len))
col++;
}
if(currline->txt[col-1] == '\n')
col--;
if(len == col) {
if(currline->next) {
GoDown();
col = 0;
}
else
col--;
}
if(blockcol != -1)
displine(currline, row);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::Newline() {
GFTRK("EditNewline");
// Pointer to the split position
int _splitpos = col;
// Buffer for the second part of the split line
char* _splitbuf = (char*)throw_malloc(EDIT_BUFLEN);
*_splitbuf = NUL;
// If the split line was quoted, get the quotestring
// But do not get it if the cursor points to a linefeed or is
uint _quotelen = 0;
if(is_quote(currline->txt.c_str())) {
GetQuotestr(currline->txt.c_str(), _splitbuf, &_quotelen);
THROW_CHECKPTR(_splitbuf);
}
// Eliminate the quotestring if
// - the cursor points to a linefeed or
// - the cursor is located inside the quotestring
if(_quotelen and ((currline->txt.length() == col) or (currline->txt[_splitpos] == '\n') or (col < _quotelen)))
*_splitbuf = _quotelen = 0;
// Append the second part to the split buffer
strcat(_splitbuf, currline->txt.substr(_splitpos).c_str());
THROW_CHECKPTR(_splitbuf);
Undo->PushItem(EDIT_UNDO_INS_TEXT|batch_mode, currline, col, 1);
batch_mode = BATCH_MODE;
// Copy linefeed+nul to the split position
currline->txt.erase(_splitpos);
currline->txt += "\n";
// Re-type and display the split line
setlinetype(currline);
displine(currline, row);
// Insert a new line below, set the line text to the split-off part
currline = insertlinebelow(currline, _splitbuf);
// --v--
// This line would be wrapped
// This line would be
// wrapped
Undo->PushItem(EDIT_UNDO_WRAP_TEXT|BATCH_MODE, currline->prev, _quotelen, strlen(_splitbuf) - _quotelen);
setlinetype(currline);
throw_free(_splitbuf);
// Move down the cursor
col = 0;
row = downoneline(row);
// Scroll the remaining lines if necessary
if(row < maxrow)
scrolldown(mincol, row, maxcol, maxrow);
// Rewrap the split-off line
wrapdel(&currline, &col, &row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::CopyAboveChar() {
GFTRK("EditCopyAboveChar");
char _ch = ' ';
if(currline->prev) {
uint _len = currline->prev->txt.length();
if(_len and _len > col)
_ch = currline->prev->txt[col];
if(_ch == '\n')
_ch = ' ';
}
insertchar(_ch);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::DupLine() {
GFTRK("EditDupLine");
Undo->PushItem(EDIT_UNDO_VOID);
Line* _nextline = insertlinebelow(currline, currline->txt.c_str(), BATCH_MODE);
_nextline->type = currline->type & ~GLINE_BLOK;
_nextline->color = currline->color;
_nextline->kludge = currline->kludge;
refresh(currline, row);
GoDown();
GFTRK(NULL);
}
// ------------------------------------------------------------------
// PageUp behavior:
//
// ... The top line becomes the bottom line.
// ... Always remain at cursor row, except if we can't page up.
// ... If we can't page up, move the cursor row to the top line.
void IEclass::GoPgUp() {
GFTRK("EditGoPgUp");
// Not at the first line in msg?
if(currline->prev) {
// Count lines
int _count = row;
// Move to the top line currently displayed
Line* _topline = currline;
while(_count and _topline->prev) {
_topline = _topline->prev;
_count--;
}
// The count must be zero at this point!
_test_haltab(_count, _count, _count);
// At we already fully at the top?
if(_topline->prev == NULL) {
// Yes, so move the cursor row to the top line
row = minrow;
currline = _topline;
if(blockcol != -1)
refresh(currline, row);
}
else {
// We are not at the top, so continue with paging
// Move a full page of lines, if possible
_count = maxrow;
while(_count and _topline->prev) {
_topline = _topline->prev;
_count--;
}
// Set the current line
_count = row;
currline = _topline;
while(_count--)
currline = currline->next;
// Refresh display
refresh(_topline, minrow);
}
}
else {
GoTopMsg();
}
if(col+1 > currline->txt.length())
GoEOL();
GFTRK(NULL);
}
// ------------------------------------------------------------------
// PageDown behavior:
//
// ... The bottom line becomes the top line.
// ... Always remain at cursor row, except if at the last line.
// ... If at the last line, move cursor to the last window line and
// display the lines above.
// ... If there are too few lines to display after the page down, the
// rest are displayed blank.
void IEclass::GoPgDn() {
GFTRK("EditGoPgDn");
// Not at the last line in the msg?
if(currline->next) {
// Go down to the last displayed line in the window
uint _newrow = row, _oldrow = row;
Line *oldcurrline = currline;
while((_newrow < maxrow) and currline->next) {
currline = currline->next;
_newrow++;
}
// If there are more lines after the last line, start displaying from the top
if(currline->next) {
Line *_topline = currline;
// Set current line
_newrow = 0;
while((_newrow < row) and currline->next) {
currline = currline->next;
_newrow++;
}
// Move cursor row if necessary
if(_newrow < row)
row = _newrow;
refresh(_topline, minrow);
}
else {
row = _newrow;
refresh(oldcurrline, _oldrow);
}
}
else {
GoBotMsg();
}
if(col+1 > currline->txt.length())
GoEOL();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::Tab() {
GFTRK("EditTab");
int tabsz = CFG->disptabsize ? CFG->disptabsize : 1;
// Move to the next tab position
do {
if(insert)
insertchar(' ');
else if(currline->txt[col] != '\n')
GoRight();
else
break;
} while(col % tabsz);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ReTab() {
GFTRK("EditTabReverse")
int tabsz = CFG->disptabsize ? CFG->disptabsize : 1;
// Move to the next tab position
do {
if(not col)
break;
if(insert)
DelLeft();
else
GoLeft();
} while(col % tabsz);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::DeleteEOL() {
GFTRK("EditDeleteEOL");
bool _has_linefeed = (currline->txt.find('\n') != currline->txt.npos) ? true : false;
Undo->PushItem(EDIT_UNDO_DEL_TEXT, currline);
currline->txt.erase(col);
if(_has_linefeed)
currline->txt += "\n";
clreol();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::deleteline(bool zapquotesbelow) {
GFTRK("Editdeleteline");
bool done = false;
do {
// Break if need to zap quotes, but the current line is not quote and is not empty
if(zapquotesbelow and not ((currline->type & GLINE_QUOT) or strblank(currline->txt.c_str())))
break;
// Pointer to the deleted line
Line* _deletedline = currline;
// If last line to be deleted delete to EOL and exit
if(currline->next == NULL) {
if(currline->txt.empty())
break;
insertlinebelow(currline, "", batch_mode);
batch_mode = BATCH_MODE;
done = true;
}
// Pointers to the previous and next lines
Line* _prevline = currline->prev;
Line* _nextline = currline->next;
Undo->PushItem(EDIT_UNDO_PUSH_LINE|batch_mode);
// Set the new current line to the next line (which may be NULL!)
currline = _nextline;
if(currline == NULL) {
currline = _prevline;
currline->next = NULL;
_prevline = _prevline ? _prevline->prev : NULL;
}
// Link the new current line to the previous line
currline->prev = _prevline;
// Link the previous line to this line
if(_prevline)
_prevline->next = currline;
if(_deletedline->type & GLINE_BLOK) {
blockcol = -1;
_deletedline->type &= ~GLINE_BLOK;
}
// Link the deleted line to the killbuffer
if(Edit__killbuf) {
Edit__killbuf->next = _deletedline;
_deletedline->prev = Edit__killbuf;
Edit__killbuf = _deletedline;
}
else {
Edit__killbuf = _deletedline;
Edit__killbuf->prev = NULL;
}
Edit__killbuf->next = NULL;
// Move the cursor to EOL if necessary
if(col+1 > currline->txt.length())
GoEOL();
if(not zapquotesbelow)
break;
batch_mode = BATCH_MODE;
} while(not done);
// Refresh display from cursor row
refresh(currline, row);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::UnDelete(bool before) {
GFTRK("EditUnDelete");
// If there are deleted lines
if(Edit__killbuf) {
Line* _prevline = Edit__killbuf->prev;
bool down = false;
if(before) {
Edit__killbuf->prev = currline ? currline->prev : NULL;
Edit__killbuf->next = currline;
}
else {
Edit__killbuf->prev = currline;
Edit__killbuf->next = currline ? currline->next : NULL;
if(row == maxrow)
down = true;
else if((row < maxrow) and currline)
row++;
}
if(Edit__killbuf->prev)
Edit__killbuf->prev->next = Edit__killbuf;
if(Edit__killbuf->next)
Edit__killbuf->next->prev = Edit__killbuf;
currline = Edit__killbuf;
Edit__killbuf = _prevline;
if(Edit__killbuf)
Edit__killbuf->next = NULL;
Undo->PushItem(EDIT_UNDO_POP_LINE);
// Move the cursor to EOL if necessary
if(col+1 > currline->txt.length())
GoEOL();
if(down)
GoDown();
else
refresh(currline, row);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ZapQuoteBelow() {
GFTRK("ZapQuoteBelow");
if(currline->prev)
Undo->PushItem(EDIT_UNDO_VOID|PREV_LINE|batch_mode, currline->prev);
else
Undo->PushItem(EDIT_UNDO_VOID|batch_mode, currline);
batch_mode = BATCH_MODE;
deleteline(true);
if(row) {
GoUp();
GoEOL();
Newline();
}
else {
UndoItem* i = Undo->last_item;
do { i = i->prev; } while(i->action & BATCH_MODE);
i->line = currline;
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
Line* IEclass::findtopline() {
GFTRK("Editfindtopline");
uint _toprow = row;
Line* _topline = currline;
while(_topline->prev and (_toprow > minrow)) {
_topline = _topline->prev;
_toprow--;
}
GFTRK(NULL);
return _topline;
}
// ------------------------------------------------------------------
void IEclass::savefile(int __status) {
Subj statbak;
GFTRK("Editsavefile");
// Turn off cursor and put up a wait window
int wascursoron = not vcurhidden();
cursoroff();
strcpy(statbak, information);
update_statusline(LNG->Wait+1);
// Open the save file
const char* editorfile = AddPath(CFG->goldpath, EDIT->File());
remove(editorfile);
FILE* _fp = fsopen(editorfile, "wb", CFG->sharemode);
if(_fp) {
// Find the first line
Line* _saveline = findfirstline();
// First save the "unfinished" identifier
if(__status == MODE_UPDATE) {
fputs(unfinished, _fp);
fputs("\r\n", _fp);
}
// Save as whole paragraphs
while(_saveline) {
// Copy the line to a buffer
char _buf[EDIT_BUFLEN];
strcpy(_buf, _saveline->txt.c_str());
// If a LF was found, replace it with a CR/LF combo
char* _lfptr = strchr(_buf, '\n');
if(_lfptr)
strcpy(_lfptr, "\r\n");
// Save the line
fputs(_buf, _fp);
// Continue with the next line
_saveline = _saveline->next;
}
// Close save file and remove wait window
fclose(_fp);
}
update_statusline(statbak);
if(wascursoron)
cursoron();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::SaveFile() {
GFTRK("EditSaveFile");
savefile(MODE_UPDATE);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::SaveMsg() {
GFTRK("EditSaveMsg");
done = MODE_SAVE;
GFTRK(NULL);
}
// ------------------------------------------------------------------
int IEclass::isempty(Line* __line) {
if(__line == NULL)
__line = currline;
return (__line->txt.empty() or __line->txt[0] == '\n');
}
// ------------------------------------------------------------------
int IEclass::reflowok(char* __qstr) {
// Stop reflow if there is no next line
if(currline->next == NULL)
return false;
// Stop reflow if the next line is empty
if(isempty(currline->next))
return false;
// Stop reflow if the next line is a control line
if(currline->next->type & (GLINE_KLUDGE|GLINE_TEAR|GLINE_ORIG|GLINE_TAGL))
return false;
// Stop reflow if the quotestring on the next line is not the same
uint _qlen2;
char _qstr2[100];
GetQuotestr(currline->next->txt.c_str(), _qstr2, &_qlen2);
if(not strieql(__qstr, _qstr2))
return false;
return true;
}
// ------------------------------------------------------------------
void IEclass::Reflow() {
GFTRK("EditReflow");
// Skip empty lines
while(isempty()) {
if(currline->next)
GoDown();
else {
GFTRK(NULL);
return;
}
}
// Get the first quotestring
uint _qlen1;
char _qstr1[100];
GetQuotestr(currline->txt.c_str(), _qstr1, &_qlen1);
const char* _qlenptr = currline->txt.c_str() + _qlen1;
// Strip leading spaces from the first line
const char* ptr = _qlenptr;
while(*ptr and isspace(*ptr) and (*ptr != '\n')) ptr++;
if(ptr != _qlenptr) {
Undo->PushItem(EDIT_UNDO_DEL_TEXT, currline, _qlen1, ptr-_qlenptr);
currline->txt.erase(_qlen1, ptr-_qlenptr);
}
// Perform the reflow
while(reflowok(_qstr1)) {
// Work on the current line until it is done
Line* _thisline = currline;
while(_thisline == currline) {
// Stop reflow?
if(not reflowok(_qstr1))
break;
// Go to the EOL, insert a space and delete the LF
GoEOL();
if(col+1 < maxcol) {
insertchar(' ');
DelChar();
}
else {
GoDown();
col = mincol;
}
}
}
// Go to the next line
displine(currline,row);
GoDown();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ExitMsg() {
GFTRK("EditExitMsg");
done = MODE_QUIT;
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::DelLine() {
GFTRK("EditDelLine");
cursoroff();
deleteline();
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ToUpper() {
GFTRK("EditToUpper");
if(col < currline->txt.length()) {
Undo->PushItem(EDIT_UNDO_OVR_CHAR);
currline->txt[col] = toupper(currline->txt[col]);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ToLower() {
GFTRK("EditToLower");
if(col >= currline->txt.length()) {
Undo->PushItem(EDIT_UNDO_OVR_CHAR);
currline->txt[col] = tolower(currline->txt[col]);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::ToggleCase() {
GFTRK("EditToggleCase");
if(col >= currline->txt.length()) {
Undo->PushItem(EDIT_UNDO_OVR_CHAR);
if(toupper(currline->txt[col]) == currline->txt[col])
currline->txt[col] = tolower(currline->txt[col]);
else
currline->txt[col] = toupper(currline->txt[col]);
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::LookupCursor() {
GFTRK("EditLookupCursor");
LookupNode(msgptr, currline->txt.c_str()+col, LOOK_NAME);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::LookupDest() {
GFTRK("EditLookupDest");
LookupNode(msgptr, "", LOOK_DEST);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::LookupOrig() {
GFTRK("EditLookupOrig");
LookupNode(msgptr, "", LOOK_ORIG);
GFTRK(NULL);
}
// ------------------------------------------------------------------
void IEclass::Soundkill() {
HandleGEvent(EVTT_STOPVOICE);
}
// ------------------------------------------------------------------
void IEclass::statusline() {
if(chartyped) {
if(EDIT->Completion.First()) {
do {
const char* trig = EDIT->Completion.Trigger();
uint tlen = strlen(trig);
if(col >= tlen) {
if(strneql(trig, currline->txt.c_str()+col-tlen, tlen)) {
int saved_insert = insert;
insert = true;
batch_mode = BATCH_MODE;
uint n;
for(n=0; n<tlen; n++)
DelLeft();
const char* cptr = EDIT->Completion.Text();
uint clen = strlen(cptr);
for(n=0; n<clen; n++)
insertchar(*cptr++);
HandleGEvent(EVTT_EDITCOMPLETION);
insert = saved_insert;
break;
}
}
} while(EDIT->Completion.Next());
}
}
char _buf[EDIT_BUFLEN];
*_buf = NUL;
if(EDIT->Comment.First()) {
do {
const char* trig = EDIT->Comment.Trigger();
uint tlen = strlen(trig);
if(col >= tlen) {
if(strnieql(trig, currline->txt.c_str()+col-tlen, tlen)) {
strcpy(_buf, EDIT->Comment.Text());
break;
}
}
} while(EDIT->Comment.Next());
}
update_statuslinef(LNG->EditStatus, 1+thisrow, 1+col, _buf);
if(*_buf and CFG->switches.get(beepcomment)) {
HandleGEvent(EVTT_EDITCOMMENT);
}
}
// ------------------------------------------------------------------
int IEclass::handlekey(gkey __key) {
int rc = true;
switch(__key) {
case KK_EditBlockRight: __key = KK_EditGoRight; break;
case KK_EditBlockLeft: __key = KK_EditGoLeft; break;
case KK_EditBlockUp: __key = KK_EditGoUp; break;
case KK_EditBlockDown: __key = KK_EditGoDown; break;
case KK_EditBlockHome: __key = KK_EditGoBegLine; break;
case KK_EditBlockEnd: __key = KK_EditGoEOL; break;
case KK_EditBlockPgDn: __key = KK_EditGoPgDn; break;
case KK_EditBlockPgUp: __key = KK_EditGoPgUp; break;
case KK_EditCopy:
case KK_EditCut:
case KK_EditDelete: goto noselecting;
case KK_EditDelChar:
case KK_EditDelLeft:
case KK_EditPaste:
if(selecting) {
BlockCut(true);
batch_mode = BATCH_MODE;
if(__key != KK_EditPaste)
__key = KK_EditUndefine;
}
goto noselecting;
break;
default:
rc = PlayMacro(__key, KT_E);
if(rc == true)
return rc;
rc = true;
if(selecting) {
Line *_line;
selecting = NO;
blockcol = -1;
for(_line = findfirstline(); _line; _line = _line->next)
_line->type &= ~GLINE_BLOK;
// refresh screen
int r = row;
for(_line = currline; _line and r; _line = _line->prev)
r--;
refresh(_line, minrow);
}
goto noselecting;
}
if(not selecting) {
Line *_line;
for(_line = findfirstline(); _line; _line = _line->next)
_line->type &= ~GLINE_BLOK;
currline->type |= GLINE_BLOK;
selecting = YES;
blockcol = col;
// refresh screen
int r = row;
for(_line = currline; _line and r; _line = _line->prev)
r--;
refresh(_line, minrow);
}
noselecting:
switch(__key) {
case KK_EditAbort: Abort(); break;
case KK_EditAskExit: AskExit(); break;
case KK_EditClearDeleteBuf: ClearDeleteBuf(); break;
case KK_EditClearPasteBuf: ClearPasteBuf(); break;
case KK_EditCopyAboveChar: CopyAboveChar(); break;
case KK_EditDelChar: DelChar(); break;
case KK_EditDeleteEOL: DeleteEOL(); break;
case KK_EditDelLeft: DelLeft(); break;
case KK_EditDelLine: DelLine(); break;
case KK_EditDelLtWord: DelLtWord(); break;
case KK_EditDelRtWord: DelRtWord(); break;
case KK_EditDosShell: DosShell(); break;
case KK_EditDupLine: DupLine(); break;
case KK_EditExitMsg: ExitMsg(); break;
case KK_EditExportText: ExportText(); break;
case KK_EditGoBegLine: GoBegLine(); break;
case KK_EditGoBotLine: GoBotLine(); break;
case KK_EditGoBotMsg: GoBotMsg(); break;
case KK_EditGoDown: GoDown(); break;
case KK_EditGoEOL: GoEOL(); break;
case KK_EditGoLeft: GoLeft(); break;
case KK_EditGoPgDn: GoPgDn(); break;
case KK_EditGoPgUp: GoPgUp(); break;
case KK_EditGoRight: GoRight(); break;
case KK_EditGoTopLine: GoTopLine(); break;
case KK_EditGoTopMsg: GoTopMsg(); break;
case KK_EditGoUp: GoUp(); break;
case KK_EditGoWordLeft: GoWordLeft(); break;
case KK_EditGoWordRight: GoWordRight(); break;
case KK_EditHeader: Header(); break;
case KK_EditImportQuotebuf: ImportQuotebuf(); break;
case KK_EditImportText: ImportText(); break;
case KK_EditLoadFile: LoadFile(); break;
case KK_EditLookupCursor: LookupCursor(); break;
case KK_EditLookupDest: LookupDest(); break;
case KK_EditLookupOrig: LookupOrig(); break;
case KK_EditNewline: Newline(); break;
case KK_EditQuitNow: QuitNow(); break;
case KK_EditReflow: Reflow(); break;
case KK_EditSaveFile: SaveFile(); break;
case KK_EditSaveMsg: SaveMsg(); break;
case KK_EditSoundkill: Soundkill(); break;
case KK_EditSpellCheck: SpellCheck(); break;
case KK_EditTab: Tab(); break;
case KK_EditTabReverse: ReTab(); break;
case KK_EditToggleCase: ToggleCase(); break;
case KK_EditToggleInsert: ToggleInsert(); break;
case KK_EditToLower: ToLower(); break;
case KK_EditToUpper: ToUpper(); break;
case KK_EditUndefine: break;
case KK_EditUnDelete: UnDelete(); break;
case KK_EditUndo: Undo->PlayItem(); break;
case KK_EditZapQuoteBelow: ZapQuoteBelow(); break;
// Block functions
case KK_EditAnchor: BlockAnchor(); break;
case KK_EditCopy: BlockCopy(); break;
case KK_EditCut: BlockCut(); break;
case KK_EditDelete: BlockCut(true); break;
case KK_EditPaste: BlockPaste(); break;
default:
rc = false;
break;
}
if(__key != KK_EditUndo)
undo_ready = NO;
return rc;
}
// ------------------------------------------------------------------
int IEclass::Start(int __mode, uint* __position, GMsg* __msg) {
GFTRK("EditStart");
thisrow = 0;
quitnow = NO;
col = mincol;
row = minrow;
msgptr = __msg;
msgmode = __mode;
currline = __msg->lin;
if(AA->isinternet() and (CFG->soupexportmargin <= CFG->dispmargin))
margintext = CFG->soupexportmargin;
else
margintext = CFG->dispmargin;
marginquotes = EDIT->QuoteMargin();
if(marginquotes > margintext)
marginquotes = margintext;
if(currline == NULL) {
currline = new Line("\n");
throw_xnew(currline);
}
// Check if there is an unfinished backup message
FILE* _fp = fsopen(AddPath(CFG->goldpath, EDIT->File()), "rt", CFG->sharemode);
if(_fp) {
char _buf[EDIT_BUFLEN];
fgets(_buf, sizeof(_buf), _fp);
fclose(_fp);
if(striinc(unfinished, _buf)) {
w_info(LNG->UnfinishedMsg);
update_statusline(LNG->LoadUnfinished);
HandleGEvent(EVTT_ATTENTION);
gkey _ch = getxch();
w_info(NULL);
if(_ch != Key_Esc) {
LoadFile();
*__position = 0;
remove(AddPath(CFG->goldpath, EDIT->File()));
}
}
}
if(*__position) {
for(uint _posrow=0; _posrow < *__position; _posrow++) {
if(currline->next) {
currline = currline->next;
row++;
}
}
thisrow = row;
}
done = NO;
// If the starting line is outside the first screenful
if(*__position >= (maxrow+1)) {
refresh(currline->prev, minrow);
row = 1;
}
else {
refresh(findfirstline(), minrow);
}
gotorowcol(mincol, minrow);
dispins();
time_t _lasttime = time(NULL);
while(not done) {
statusline();
gotorowcol(col, row);
batch_mode = 0;
int backattr = 0;
if(blockcol == -1) {
backattr = dispchar(currline->txt.c_str()[col], C_READC);
gotorowcol(col, row);
}
cursoron();
if(insert)
vcursmall();
else
vcurlarge();
gkey _ch;
do {
_ch = getxchtick();
if(EDIT->AutoSave()) {
time_t _thistime = time(NULL);
if(_thistime >= (_lasttime+EDIT->AutoSave())) {
_lasttime = _thistime;
SaveFile();
}
}
if(_ch == Key_Tick)
CheckTick(KK_EditQuitNow);
} while(_ch == Key_Tick);
pcol = col; getthisrow(currline); prow = thisrow;
int ismacro = false;
gkey _kk = SearchKey(_ch, EditKey, EditKeys);
if(_kk) {
_ch = _kk;
}
else {
ismacro = IsMacro(_ch, KT_E);
}
if(blockcol == -1)
dispchar(currline->txt.c_str()[col], backattr);
chartyped = false;
if((_ch < KK_Commands) and (_ch & 0xFF) and not ismacro) {
chartyped = true;
_ch &= 0xFF;
insertchar((char)_ch);
undo_ready = YES;
}
else if(handlekey(_ch)) {
getthisrow(currline);
}
}
cursoroff();
msgptr->lin = findfirstline();
savefile(quitnow ? MODE_UPDATE : MODE_SAVE);
// Prune killbuffer
if(Edit__killbuf) {
Line *__line = Edit__killbuf;
int _count = EDIT->UnDelete();
while(__line and _count--)
__line = __line->prev;
if(__line)
if(__line->next)
__line->next->prev = NULL;
while(__line) {
if(Undo->FixPushLine(__line)) {
if(__line->prev) {
__line = __line->prev;
__line->next = NULL;
}
else {
__line = NULL;
}
}
else {
if(__line->prev) {
__line = __line->prev;
throw_xdelete(__line->next);
}
else
throw_xdelete(__line);
}
}
}
*__position = 1 + thisrow;
GFTRK(NULL);
return done;
}
// ------------------------------------------------------------------
UndoStack::UndoStack(IEclass* this_editor) :
editor(this_editor),
row(editor->row),
col(editor->col),
pcol(editor->pcol),
prow(editor->prow),
minrow(editor->minrow),
maxrow(editor->maxrow),
thisrow(editor->thisrow),
currline(editor->currline),
undo_ready(editor->undo_ready) {
UndoItem::last_item = &last_item;
last_item = NULL;
undo_enabled = YES;
}
// ------------------------------------------------------------------
UndoStack::~UndoStack() {
while(last_item) {
switch(last_item->action & EDIT_UNDO_ACTION) {
case EDIT_UNDO_DEL_TEXT:
case EDIT_UNDO_INS_TEXT:
case EDIT_UNDO_WRAP_TEXT:
throw_delete(last_item->data.text_ptr);
break;
case EDIT_UNDO_DEL_LINE:
throw_xdelete(last_item->data.line_ptr);
}
delete last_item;
}
}
// ------------------------------------------------------------------
bool UndoStack::FixPushLine(Line* __line) {
UndoItem* item = last_item;
while(item) {
if(((item->action & EDIT_UNDO_ACTION) == EDIT_UNDO_PUSH_LINE) and (item->data.line_ptr == __line)) {
item->action &= ~EDIT_UNDO_ACTION;
item->action |= EDIT_UNDO_ORPHAN_LINE;
return true;
}
item = item->prev;
}
return false;
}
// ------------------------------------------------------------------
void UndoStack::PushItem(uint action, Line* __line, uint __col, uint __len) {
GFTRK("PushItem");
if(undo_enabled) {
throw_new(last_item = new UndoItem);
last_item->col.num = (__col != NO_VALUE) ? __col : col;
last_item->col.sav = 0;
last_item->action = action;
last_item->pcol = pcol;
last_item->prow = prow;
switch(action & EDIT_UNDO_ACTION) {
case EDIT_UNDO_VOID:
case EDIT_UNDO_INS_CHAR:
last_item->line = __line ? __line : currline;
break;
case EDIT_UNDO_DEL_CHAR:
case EDIT_UNDO_OVR_CHAR:
last_item->line = __line ? __line : currline;
last_item->data.char_int = last_item->line->txt[last_item->col.num];
break;
case EDIT_UNDO_DEL_TEXT:
last_item->line = __line;
__col = last_item->col.num;
if(__len == NO_VALUE)
__len = __line->txt.length() - __col + 1;
throw_new(last_item->data.text_ptr = new(__len) text_item(__col, __len));
memcpy(last_item->data.text_ptr->text, __line->txt.c_str() + __col, __len);
break;
case EDIT_UNDO_CUT_TEXT:
last_item->line = __line;
break;
case EDIT_UNDO_INS_TEXT:
case EDIT_UNDO_WRAP_TEXT:
last_item->line = __line;
if(__len == NO_VALUE)
__len = __line->txt.length() - __col + 1;
throw_new(last_item->data.text_ptr = new text_item(__col, __len));
break;
case EDIT_UNDO_NEW_LINE:
last_item->line = last_item->data.line_ptr = __line;
break;
case EDIT_UNDO_DEL_LINE:
last_item->line = __line->prev ? __line->prev : __line->next;
last_item->data.line_ptr = __line;
break;
case EDIT_UNDO_PUSH_LINE:
if(currline->next)
last_item->line = currline->next;
else {
last_item->action |= LAST_LINE;
last_item->line = currline->prev;
}
last_item->data.line_ptr = currline;
break;
case EDIT_UNDO_POP_LINE:
last_item->line = currline;
}
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
void UndoStack::PlayItem() {
GFTRK("PlayItem");
if(last_item) {
UndoItem* item;
// Don't save any new items while in Undo function
undo_enabled = NO;
// Find first of the batch items
for(item = last_item; item->action & BATCH_MODE; item = item->prev);
uint curr_row_num = thisrow;
uint curr_col_num = col;
currline = (item->action & PREV_LINE) ? item->line->next : item->line;
editor->getthisrow(currline);
col = item->col.num;
if(curr_row_num != thisrow) {
// Let user to see the position before performing Undo, unless it's a
// neighbour line and the same column.
undo_ready = ((abs(int(curr_row_num - thisrow)) < 2) and ((curr_col_num == col) or (col+1 > currline->txt.length())));
// Move cursor up or down depending on where the undo line is,
// then refresh window if the line is invisible.
do {
if(curr_row_num > thisrow) {
if(row > minrow)
curr_row_num--, row--;
else {
editor->refresh(currline, row);
break;
}
}
else {
if(row < maxrow)
curr_row_num++, row++;
else {
Line* l = currline;
for(uint r = row; r; l = l->prev, r--) {}
editor->refresh(l, minrow);
break;
}
}
} while(curr_row_num != thisrow);
}
else
undo_ready = ((abs(int(curr_col_num - col)) < 2) or (col+1 > currline->txt.length()));
uint _pcol = item->pcol;
uint _prow = item->prow;
if(undo_ready) {
bool in_batch;
// Keep undoing until item with no BATCH_MODE flag is reached.
do {
uint undo_type = last_item->action & EDIT_UNDO_TYPE;
uint undo_action = last_item->action & EDIT_UNDO_ACTION;
in_batch = last_item->action & BATCH_MODE;
currline = last_item->line;
if(last_item->action & PREV_LINE) {
col = last_item->col.num = last_item->col.sav;
if(row > minrow)
row--;
}
switch(undo_type) {
case EDIT_UNDO_CHAR:
switch(undo_action) {
case EDIT_UNDO_INS_CHAR:
currline->txt.erase(last_item->col.num,1);
break;
case EDIT_UNDO_DEL_CHAR:
currline->txt.insert(last_item->col.num, 1, last_item->data.char_int);
break;
case EDIT_UNDO_OVR_CHAR:
currline->txt[last_item->col.num] = last_item->data.char_int;
break;
}
editor->setlinetype(currline);
break;
case EDIT_UNDO_TEXT: {
text_item* text_data = last_item->data.text_ptr;
string *txt = &currline->txt;
switch(undo_action) {
case EDIT_UNDO_DEL_TEXT:
txt->insert(text_data->col, text_data->text, text_data->len);
throw_delete(text_data);
break;
case EDIT_UNDO_CUT_TEXT:
txt->erase(last_item->col.num);
break;
case EDIT_UNDO_WRAP_TEXT:
txt->append(currline->next->txt.c_str()+text_data->col, text_data->len);
txt = &currline->next->txt;
// fall through...
case EDIT_UNDO_INS_TEXT:
txt->erase(text_data->col, text_data->len);
throw_delete(text_data);
break;
}
editor->setlinetype(currline);
break;
}
case EDIT_UNDO_LINE: {
Line* thisline = last_item->data.line_ptr;
switch(undo_action) {
case EDIT_UNDO_NEW_LINE:
if(thisline->next)
thisline->next->prev = thisline->prev;
if(thisline->prev) {
thisline->prev->next = thisline->next;
currline = thisline->prev;
}
else
currline = thisline->next;
throw_xdelete(thisline);
break;
case EDIT_UNDO_ORPHAN_LINE:
if(last_item->action & LAST_LINE) {
thisline->prev = currline;
thisline->next = currline ? currline->next : NULL;
if((row < maxrow) and currline)
row++;
}
else {
thisline->prev = currline ? currline->prev : NULL;
thisline->next = currline;
}
// fall through...
case EDIT_UNDO_DEL_LINE:
if(thisline->prev)
thisline->prev->next = thisline;
if(thisline->next)
thisline->next->prev = thisline;
currline = thisline;
break;
case EDIT_UNDO_PUSH_LINE:
editor->UnDelete((last_item->action & LAST_LINE) ? false : true);
break;
case EDIT_UNDO_POP_LINE:
editor->DelLine();
break;
}
}
}
_pcol = last_item->pcol;
_prow = last_item->prow;
delete last_item;
} while(last_item and in_batch);
undo_enabled = YES;
editor->getthisrow(currline);
uint temprow = row;
Line *templine = currline;
Line *topline = editor->findfirstline();
int delta = _prow-thisrow;
if(not in_range(row+delta, minrow, maxrow)) {
// we need to fit thisrow into the screen boundaries
if(delta > 0) {
for (row -= delta; row < minrow; row++) {
if(templine) // cause refresh() issue an error since templine should never be NULL
templine = templine->next;
}
temprow = maxrow;
}
else {
for (row -= delta; row > maxrow; row--) {
if(templine) // cause refresh() issue an error since templine should never be NULL
templine = templine->prev;
}
temprow = minrow;
}
// move pointer to the top of screen so we refresh scrolled area
while (row != minrow) {
if(templine) // cause refresh() issue an error since templine should never be NULL
templine = templine->prev;
--row;
}
}
else {
if(delta < 0) {
templine = topline;
for(thisrow=0; thisrow < _prow; thisrow++)
if(templine) // cause refresh() issue an error if thisrow != _prow
templine = templine->next;
}
temprow = row+delta;
}
// refresh screen
editor->refresh(templine, row);
// set cursor position
thisrow = _prow;
col = _pcol;
row = temprow;
// set currline according to thisrow
currline = topline;
for(thisrow=0; thisrow < _prow; thisrow++)
if(currline)
currline = currline->next;
}
// Move the cursor to EOL if necessary
else if(col+1 > currline->txt.length())
editor->GoEOL();
undo_ready = YES;
}
GFTRK(NULL);
}
// ------------------------------------------------------------------
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