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https://github.com/MidnightCommander/mc
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371d2dc545
* gtkedit/edit.c (edit_load_file): Off-by-one error disabled editing.
2361 lines
62 KiB
C
2361 lines
62 KiB
C
/* editor low level data handling and cursor fundamentals.
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Copyright (C) 1996, 1997 the Free Software Foundation
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Authors: 1996, 1997 Paul Sheer
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define _EDIT_C THIS_IS
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#include <config.h>
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#if defined(NEEDS_IO_H)
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# include <io.h>
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#endif
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#include <fcntl.h>
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#ifdef NEEDS_CR_LF_TRANSLATION
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# define CR_LF_TRANSLATION
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#endif
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#include "edit.h"
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#ifdef SCO_FLAVOR
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# include <sys/timeb.h>
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#endif /* SCO_FLAVOR */
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#include <time.h> /* for ctime() */
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/*
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*
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* here's a quick sketch of the layout: (don't run this through indent.)
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*
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* (b1 is buffers1 and b2 is buffers2)
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*
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* |
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* \0\0\0\0\0m e _ f i l e . \nf i n . \n|T h i s _ i s _ s o\0\0\0\0\0\0\0\0\0
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* ______________________________________|______________________________________
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* |
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* ... | b2[2] | b2[1] | b2[0] | b1[0] | b1[1] | b1[2] | ...
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* |-> |-> |-> |-> |-> |-> |
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* |
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* _<------------------------->|<----------------->_
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* WEdit->curs2 | WEdit->curs1
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* ^ | ^
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* | ^|^ |
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* cursor ||| cursor
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* |||
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* file end|||file beginning
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* |
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* |
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*
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* _
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* This_is_some_file
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* fin.
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*
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*
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*/
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/*
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returns a byte from any location in the file.
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Returns '\n' if out of bounds.
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*/
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#ifndef NO_INLINE_GETBYTE
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int edit_get_byte (WEdit * edit, long byte_index)
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{
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unsigned long p;
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if (byte_index >= (edit->curs1 + edit->curs2) || byte_index < 0)
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return '\n';
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if (byte_index >= edit->curs1) {
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p = edit->curs1 + edit->curs2 - byte_index - 1;
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return edit->buffers2[p >> S_EDIT_BUF_SIZE][EDIT_BUF_SIZE - (p & M_EDIT_BUF_SIZE) - 1];
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} else {
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return edit->buffers1[byte_index >> S_EDIT_BUF_SIZE][byte_index & M_EDIT_BUF_SIZE];
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}
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}
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#endif
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char *edit_get_buffer_as_text (WEdit * e)
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{
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int l, i;
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char *t;
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l = e->curs1 + e->curs2;
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t = CMalloc (l + 1);
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for (i = 0; i < l; i++)
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t[i] = edit_get_byte (e, i);
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t[l] = 0;
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return t;
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}
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/* Initialisation routines */
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/* returns 1 on error */
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/* loads file OR text into buffers. Only one must be none-NULL. */
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/* cursor set to start of file */
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int init_dynamic_edit_buffers (WEdit * edit, const char *filename, const char *text)
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{
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#if defined CR_LF_TRANSLATION
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/* Variables needed for safe handling of Translation from Microsoft CR/LF EOL to
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Unix Style LF EOL - Franco */
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long bytes_wanted,bytes_read,bytes_missing;
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char *p;
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#endif
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long buf;
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int j, file = -1, buf2;
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for (j = 0; j <= MAXBUFF; j++) {
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edit->buffers1[j] = NULL;
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edit->buffers2[j] = NULL;
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}
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if (filename)
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if ((file = open ((char *) filename, O_RDONLY | MY_O_TEXT)) == -1) {
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/* The file-name is printed after the ':' */
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edit_error_dialog (_(" Error "), get_sys_error (catstrs (_(" Failed trying to open file for reading: "), filename, " ", 0)));
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return 1;
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}
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edit->curs2 = edit->last_byte;
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buf2 = edit->curs2 >> S_EDIT_BUF_SIZE;
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edit->buffers2[buf2] = CMalloc (EDIT_BUF_SIZE);
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/*
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_read returns the number of bytes read,
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which may be less than count if there are fewer than count bytes left in the file
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or if the file was opened in text mode,
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in which case each carriage return<72>linefeed (CR-LF) pair is replaced
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with a single linefeed character. Only the single linefeed character is counted
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in the return value. The replacement does not affect the file pointer.
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_eof returns 1 if the current position is end of file, or 0 if it is not.
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A return value of -1 indicates an error; in this case, errno is set to EBADF,
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which indicates an invalid file handle.
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*/
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if (filename){
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#if defined CR_LF_TRANSLATION
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bytes_wanted=edit->curs2 & M_EDIT_BUF_SIZE;
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p = (char *) edit->buffers2[buf2] + EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE);
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bytes_read = read (file, p , edit->curs2 & M_EDIT_BUF_SIZE);
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bytes_missing = bytes_wanted - bytes_read ;
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while(bytes_missing ){
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p += bytes_read;
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bytes_read = read(file,p,bytes_missing);
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if(bytes_read <= 0) break;
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bytes_missing -= bytes_read ;
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}
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#else
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read (file, (char *) edit->buffers2[buf2] + EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE), edit->curs2 & M_EDIT_BUF_SIZE);
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#endif
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}
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else {
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memcpy (edit->buffers2[buf2] + EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE), text, edit->curs2 & M_EDIT_BUF_SIZE);
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text += edit->curs2 & M_EDIT_BUF_SIZE;
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}
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for (buf = buf2 - 1; buf >= 0; buf--) {
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edit->buffers2[buf] = CMalloc (EDIT_BUF_SIZE);
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if (filename){
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#if defined CR_LF_TRANSLATION
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bytes_wanted = EDIT_BUF_SIZE;
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p = (char *) edit->buffers2[buf];
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bytes_read = read (file, p, EDIT_BUF_SIZE);
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bytes_missing = bytes_wanted - bytes_read ;
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while(bytes_missing ){
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p += bytes_read;
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bytes_read = read(file,p,bytes_missing);
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if(bytes_read <= 0) break;
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bytes_missing -= bytes_read ;
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}
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#else
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read (file, (char *) edit->buffers2[buf], EDIT_BUF_SIZE);
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#endif
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}
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else {
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memcpy (edit->buffers2[buf], text, EDIT_BUF_SIZE);
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text += EDIT_BUF_SIZE;
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}
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}
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edit->curs1 = 0;
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if (file != -1)
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close (file);
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return 0;
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}
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/* returns 1 on error */
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int edit_load_file (WEdit * edit, const char *filename, const char *text, unsigned long text_size)
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{
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struct stat s;
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int file;
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/* VARS for Lastbyte calculation in TEXT mode FRANCO */
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#if defined CR_LF_TRANSLATION
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char tmp_buf[1024];
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long real_size,bytes_read;
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#endif
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if (text) {
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edit->last_byte = text_size;
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filename = NULL;
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} else {
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#if defined(MIDNIGHT) || defined(GTK)
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if ((file = open ((char *) filename, O_RDONLY | MY_O_TEXT )) < 0)
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{
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close(creat((char *) filename, 0666));
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if ((file = open ((char *) filename, O_RDONLY | MY_O_TEXT )) < 0) {
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edit_error_dialog (_(" Error "), get_sys_error (catstrs (" Fail trying to open the file, ", filename, ", for reading ", 0)));
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return 1;
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}
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edit->delete_file = 1;
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}
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#else
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if ((file = open ((char *) filename, O_RDONLY)) < 0) {
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edit_error_dialog (_(" Error "), get_sys_error (catstrs (_(" Failed trying to open file for reading: "), filename, " ", 0)));
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return 1;
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}
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#endif
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if (stat ((char *) filename, &s) < 0) {
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close (file);
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/* The file-name is printed after the ':' */
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edit_error_dialog (_(" Error "), get_sys_error (catstrs (_(" Cannot get size/permissions info on file: "), filename, " ", 0)));
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return 1;
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}
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if (S_ISDIR (s.st_mode) || S_ISSOCK (s.st_mode)
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|| S_ISFIFO (s.st_mode)) {
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close (file);
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/* The file-name is printed after the ':' */
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edit_error_dialog (_(" Error "), catstrs (_(" Not an ordinary file: "), filename, " ", 0));
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return 1;
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}
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if (s.st_size >= SIZE_LIMIT) {
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close (file);
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/* The file-name is printed after the ':' */
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edit_error_dialog (_(" Error "), catstrs (_(" File is too large: "), \
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filename, _(" \n Increase edit.h:MAXBUF and recompile the editor. "), 0));
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return 1;
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}
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/* Lastbyte calculation in TEXT mode FRANCO */
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#if defined CR_LF_TRANSLATION
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if(file && (!text)){
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real_size=0;
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tmp_buf[sizeof (tmp_buf)-1]=0;
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while((bytes_read = read(file,tmp_buf,1024)) > 0){
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real_size += bytes_read;
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}
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s.st_size = real_size;
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}
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#endif
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close (file);
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edit->last_byte = s.st_size;
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edit->stat = s;
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}
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return init_dynamic_edit_buffers (edit, filename, text);
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}
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#ifdef MIDNIGHT
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#define space_width 1
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#else
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int space_width;
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extern int option_long_whitespace;
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extern unsigned char per_char[256];
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void edit_set_space_width (int s)
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{
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space_width = s;
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}
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#endif
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/* fills in the edit struct. returns 0 on fail. Pass edit as NULL for this */
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WEdit *edit_init (WEdit * edit, int lines, int columns, const char *filename, const char *text, const char *dir, unsigned long text_size)
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{
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char *f;
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int to_free = 0;
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#ifndef MIDNIGHT
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if (option_long_whitespace)
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edit_set_space_width (per_char[' '] * 2);
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else
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edit_set_space_width (per_char[' ']);
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#endif
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if (!edit) {
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edit = malloc (sizeof (WEdit));
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memset (edit, 0, sizeof (WEdit));
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to_free = 1;
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}
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if (!edit) {
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edit_error_dialog (_(" Error "), _(" Error allocating memory "));
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return 0;
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}
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memset (&(edit->from_here), 0, (unsigned long) &(edit->to_here) - (unsigned long) &(edit->from_here));
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#ifndef MIDNIGHT
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edit->max_column = columns * FONT_MEAN_WIDTH;
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#endif
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edit->num_widget_lines = lines;
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edit->num_widget_columns = columns;
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edit->stat.st_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
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edit->stat.st_uid = getuid ();
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edit->stat.st_gid = getgid ();
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edit->bracket = -1;
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if (!dir)
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dir = "";
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f = (char *) filename;
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if (filename)
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f = catstrs (dir, filename, 0);
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if (edit_load_file (edit, f, text, text_size)) {
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/* edit_load_file already gives an error message */
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if (to_free)
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free (edit);
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return 0;
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}
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edit->force |= REDRAW_PAGE;
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if (filename) {
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filename = catstrs (dir, filename, 0);
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edit_split_filename (edit, (char *) filename);
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} else {
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edit->filename = strdup ("");
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edit->dir = strdup(dir);
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}
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edit->stack_size = START_STACK_SIZE;
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edit->stack_size_mask = START_STACK_SIZE - 1;
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edit->undo_stack = malloc ((edit->stack_size + 10) * sizeof (long));
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if (!edit->undo_stack) {
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edit_error_dialog (_(" Error "), _(" Error allocating memory "));
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if (to_free)
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free (edit);
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return 0;
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}
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edit->total_lines = edit_count_lines (edit, 0, edit->last_byte);
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edit_load_syntax (edit, 0, 0);
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{
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int fg, bg;
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edit_get_syntax_color (edit, -1, &fg, &bg);
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}
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return edit;
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}
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/* clear the edit struct, freeing everything in it. returns 1 on success */
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int edit_clean (WEdit * edit)
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{
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if (edit) {
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int j = 0;
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edit_free_syntax_rules (edit);
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for (; j <= MAXBUFF; j++) {
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if (edit->buffers1[j] != NULL)
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free (edit->buffers1[j]);
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if (edit->buffers2[j] != NULL)
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free (edit->buffers2[j]);
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}
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if (edit->undo_stack)
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free (edit->undo_stack);
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if (edit->filename)
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free (edit->filename);
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if (edit->dir)
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free (edit->dir);
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/* we don't want to clear the widget */
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memset (&(edit->from_here), 0, (unsigned long) &(edit->to_here) - (unsigned long) &(edit->from_here));
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return 1;
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}
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return 0;
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}
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/* returns 1 on success */
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int edit_renew (WEdit * edit)
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{
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int lines = edit->num_widget_lines;
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int columns = edit->num_widget_columns;
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char *dir;
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if (edit->dir)
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dir = strdup (edit->dir);
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else
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dir = 0;
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edit_clean (edit);
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if (!edit_init (edit, lines, columns, 0, "", dir, 0))
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return 0;
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return 1;
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}
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/* returns 1 on success, if returns 0, the edit struct would have been free'd */
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int edit_reload (WEdit * edit, const char *filename, const char *text, const char *dir, unsigned long text_size)
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{
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int lines = edit->num_widget_lines;
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int columns = edit->num_widget_columns;
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edit_clean (edit);
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if (!edit_init (edit, lines, columns, filename, text, dir, text_size)) {
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return 0;
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}
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return 1;
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}
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/*
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Recording stack for undo:
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The following is an implementation of a compressed stack. Identical
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pushes are recorded by a negative prefix indicating the number of times the
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same char was pushed. This saves space for repeated curs-left or curs-right
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delete etc.
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eg:
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pushed: stored:
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a
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b a
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b -3
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b b
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c --> -4
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c c
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c d
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c
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d
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If the stack long int is 0-255 it represents a normal insert (from a backspace),
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256-512 is an insert ahead (from a delete), If it is betwen 600 and 700 it is one
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of the cursor functions #define'd in edit.h. 1000 through 700'000'000 is to
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set edit->mark1 position. 700'000'000 through 1400'000'000 is to set edit->mark2
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position.
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The only way the curser moves or the buffer is changed is through the routines:
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insert, backspace, insert_ahead, delete, and cursor_move.
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These record the reverse undo movements onto the stack each time they are
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called.
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Each key press results in a set of actions (insert; delete ...). So each time
|
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a key is pressed the current position of start_display is pushed as
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KEY_PRESS + start_display. Then for undoing, we pop until we get to a number
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over KEY_PRESS. We then assign this number less KEY_PRESS to start_display. So undo
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tracks scrolling and key actions exactly. (KEY_PRESS is about (2^31) * (2/3) = 1400'000'000)
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*/
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static int push_action_disabled = 0;
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void edit_push_action (WEdit * edit, long c,...)
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{
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unsigned long sp = edit->stack_pointer;
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unsigned long spm1;
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long *t;
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/* first enlarge the stack if necessary */
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if (sp > edit->stack_size - 10) { /* say */
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if (option_max_undo < 256)
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option_max_undo = 256;
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if (edit->stack_size < option_max_undo) {
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t = malloc ((edit->stack_size * 2 + 10) * sizeof (long));
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if (t) {
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memcpy (t, edit->undo_stack, sizeof (long) * edit->stack_size);
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free (edit->undo_stack);
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edit->undo_stack = t;
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edit->stack_size <<= 1;
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edit->stack_size_mask = edit->stack_size - 1;
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}
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}
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}
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spm1 = (edit->stack_pointer - 1) & edit->stack_size_mask;
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if (push_action_disabled)
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return;
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#ifdef FAST_MOVE_CURSOR
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if (c == CURS_LEFT_LOTS || c == CURS_RIGHT_LOTS) {
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va_list ap;
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edit->undo_stack[sp] = c == CURS_LEFT_LOTS ? CURS_LEFT : CURS_RIGHT;
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||
edit->stack_pointer = (edit->stack_pointer + 1) & edit->stack_size_mask;
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va_start (ap, c);
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c = -(va_arg (ap, int));
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va_end (ap);
|
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} else
|
||
#endif /* ! FAST_MOVE_CURSOR */
|
||
if (spm1 != edit->stack_bottom && ((sp - 2) & edit->stack_size_mask) != edit->stack_bottom) {
|
||
int d;
|
||
if (edit->undo_stack[spm1] < 0) {
|
||
d = edit->undo_stack[(sp - 2) & edit->stack_size_mask];
|
||
if (d == c) {
|
||
if (edit->undo_stack[spm1] > -1000000000) {
|
||
if (c < KEY_PRESS) /* --> no need to push multiple do-nothings */
|
||
edit->undo_stack[spm1]--;
|
||
return;
|
||
}
|
||
}
|
||
/* #define NO_STACK_CURSMOVE_ANIHILATION */
|
||
#ifndef NO_STACK_CURSMOVE_ANIHILATION
|
||
else if ((c == CURS_LEFT && d == CURS_RIGHT)
|
||
|| (c == CURS_RIGHT && d == CURS_LEFT)) { /* a left then a right anihilate each other */
|
||
if (edit->undo_stack[spm1] == -2)
|
||
edit->stack_pointer = spm1;
|
||
else
|
||
edit->undo_stack[spm1]++;
|
||
return;
|
||
}
|
||
#endif
|
||
} else {
|
||
d = edit->undo_stack[spm1];
|
||
if (d == c) {
|
||
if (c >= KEY_PRESS)
|
||
return; /* --> no need to push multiple do-nothings */
|
||
edit->undo_stack[sp] = -2;
|
||
goto check_bottom;
|
||
}
|
||
#ifndef NO_STACK_CURSMOVE_ANIHILATION
|
||
else if ((c == CURS_LEFT && d == CURS_RIGHT)
|
||
|| (c == CURS_RIGHT && d == CURS_LEFT)) { /* a left then a right anihilate each other */
|
||
edit->stack_pointer = spm1;
|
||
return;
|
||
}
|
||
#endif
|
||
}
|
||
}
|
||
edit->undo_stack[sp] = c;
|
||
check_bottom:
|
||
|
||
edit->stack_pointer = (edit->stack_pointer + 1) & edit->stack_size_mask;
|
||
|
||
/*if the sp wraps round and catches the stack_bottom then erase the first set of actions on the stack to make space - by moving stack_bottom forward one "key press" */
|
||
c = (edit->stack_pointer + 2) & edit->stack_size_mask;
|
||
if (c == edit->stack_bottom || ((c + 1) & edit->stack_size_mask) == edit->stack_bottom)
|
||
do {
|
||
edit->stack_bottom = (edit->stack_bottom + 1) & edit->stack_size_mask;
|
||
} while (edit->undo_stack[edit->stack_bottom] < KEY_PRESS && edit->stack_bottom != edit->stack_pointer);
|
||
|
||
/*If a single key produced enough pushes to wrap all the way round then we would notice that the [stack_bottom] does not contain KEY_PRESS. The stack is then initialised: */
|
||
if (edit->stack_pointer != edit->stack_bottom && edit->undo_stack[edit->stack_bottom] < KEY_PRESS)
|
||
edit->stack_bottom = edit->stack_pointer = 0;
|
||
}
|
||
|
||
/*
|
||
TODO: if the user undos until the stack bottom, and the stack has not wrapped,
|
||
then the file should be as it was when he loaded up. Then set edit->modified to 0.
|
||
*/
|
||
long pop_action (WEdit * edit)
|
||
{
|
||
long c;
|
||
unsigned long sp = edit->stack_pointer;
|
||
if (sp == edit->stack_bottom) {
|
||
return STACK_BOTTOM;
|
||
}
|
||
sp = (sp - 1) & edit->stack_size_mask;
|
||
if ((c = edit->undo_stack[sp]) >= 0) {
|
||
/* edit->undo_stack[sp] = '@'; */
|
||
edit->stack_pointer = (edit->stack_pointer - 1) & edit->stack_size_mask;
|
||
return c;
|
||
}
|
||
if (sp == edit->stack_bottom) {
|
||
return STACK_BOTTOM;
|
||
}
|
||
c = edit->undo_stack[(sp - 1) & edit->stack_size_mask];
|
||
if (edit->undo_stack[sp] == -2) {
|
||
/* edit->undo_stack[sp] = '@'; */
|
||
edit->stack_pointer = sp;
|
||
} else
|
||
edit->undo_stack[sp]++;
|
||
|
||
return c;
|
||
}
|
||
|
||
/* is called whenever a modification is made by one of the four routines below */
|
||
static inline void edit_modification (WEdit * edit)
|
||
{
|
||
edit->caches_valid = 0;
|
||
edit->modified = 1;
|
||
}
|
||
|
||
/*
|
||
Basic low level single character buffer alterations and movements at the cursor.
|
||
Returns char passed over, inserted or removed.
|
||
*/
|
||
|
||
void edit_insert (WEdit * edit, int c)
|
||
{
|
||
/* check if file has grown to large */
|
||
if (edit->last_byte >= SIZE_LIMIT)
|
||
return;
|
||
|
||
/* first we must update the position of the display window */
|
||
if (edit->curs1 < edit->start_display) {
|
||
edit->start_display++;
|
||
if (c == '\n')
|
||
edit->start_line++;
|
||
}
|
||
/* now we must update some info on the file and check if a redraw is required */
|
||
if (c == '\n') {
|
||
edit->curs_line++;
|
||
edit->total_lines++;
|
||
edit->force |= REDRAW_LINE_ABOVE | REDRAW_AFTER_CURSOR;
|
||
}
|
||
/* tell that we've modified the file */
|
||
edit_modification (edit);
|
||
|
||
/* save the reverse command onto the undo stack */
|
||
edit_push_action (edit, BACKSPACE);
|
||
|
||
/* update markers */
|
||
edit->mark1 += (edit->mark1 > edit->curs1);
|
||
edit->mark2 += (edit->mark2 > edit->curs1);
|
||
edit->last_get_rule += (edit->last_get_rule > edit->curs1);
|
||
|
||
/* add a new buffer if we've reached the end of the last one */
|
||
if (!(edit->curs1 & M_EDIT_BUF_SIZE))
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
|
||
/* perfprm the insertion */
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE][edit->curs1 & M_EDIT_BUF_SIZE] = (unsigned char) c;
|
||
|
||
/* update file length */
|
||
edit->last_byte++;
|
||
|
||
/* update cursor position */
|
||
edit->curs1++;
|
||
}
|
||
|
||
|
||
/* same as edit_insert and move left */
|
||
void edit_insert_ahead (WEdit * edit, int c)
|
||
{
|
||
if (edit->last_byte >= SIZE_LIMIT)
|
||
return;
|
||
if (edit->curs1 < edit->start_display) {
|
||
edit->start_display++;
|
||
if (c == '\n')
|
||
edit->start_line++;
|
||
}
|
||
if (c == '\n') {
|
||
edit->total_lines++;
|
||
edit->force |= REDRAW_AFTER_CURSOR;
|
||
}
|
||
edit_modification (edit);
|
||
edit_push_action (edit, DELETE);
|
||
|
||
edit->mark1 += (edit->mark1 >= edit->curs1);
|
||
edit->mark2 += (edit->mark2 >= edit->curs1);
|
||
edit->last_get_rule += (edit->last_get_rule >= edit->curs1);
|
||
|
||
if (!((edit->curs2 + 1) & M_EDIT_BUF_SIZE))
|
||
edit->buffers2[(edit->curs2 + 1) >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE][EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE) - 1] = c;
|
||
|
||
edit->last_byte++;
|
||
edit->curs2++;
|
||
}
|
||
|
||
|
||
int edit_delete (WEdit * edit)
|
||
{
|
||
int p;
|
||
if (!edit->curs2)
|
||
return 0;
|
||
|
||
edit->mark1 -= (edit->mark1 > edit->curs1);
|
||
edit->mark2 -= (edit->mark2 > edit->curs1);
|
||
edit->last_get_rule -= (edit->last_get_rule > edit->curs1);
|
||
|
||
p = edit->buffers2[(edit->curs2 - 1) >> S_EDIT_BUF_SIZE][EDIT_BUF_SIZE - ((edit->curs2 - 1) & M_EDIT_BUF_SIZE) - 1];
|
||
|
||
if (!(edit->curs2 & M_EDIT_BUF_SIZE)) {
|
||
free (edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE]);
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = NULL;
|
||
}
|
||
edit->last_byte--;
|
||
edit->curs2--;
|
||
|
||
if (p == '\n') {
|
||
edit->total_lines--;
|
||
edit->force |= REDRAW_AFTER_CURSOR;
|
||
}
|
||
edit_push_action (edit, p + 256);
|
||
if (edit->curs1 < edit->start_display) {
|
||
edit->start_display--;
|
||
if (p == '\n')
|
||
edit->start_line--;
|
||
}
|
||
edit_modification (edit);
|
||
|
||
return p;
|
||
}
|
||
|
||
|
||
int edit_backspace (WEdit * edit)
|
||
{
|
||
int p;
|
||
if (!edit->curs1)
|
||
return 0;
|
||
|
||
edit->mark1 -= (edit->mark1 >= edit->curs1);
|
||
edit->mark2 -= (edit->mark2 >= edit->curs1);
|
||
edit->last_get_rule -= (edit->last_get_rule >= edit->curs1);
|
||
|
||
p = *(edit->buffers1[(edit->curs1 - 1) >> S_EDIT_BUF_SIZE] + ((edit->curs1 - 1) & M_EDIT_BUF_SIZE));
|
||
if (!((edit->curs1 - 1) & M_EDIT_BUF_SIZE)) {
|
||
free (edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE]);
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = NULL;
|
||
}
|
||
edit->last_byte--;
|
||
edit->curs1--;
|
||
|
||
if (p == '\n') {
|
||
edit->curs_line--;
|
||
edit->total_lines--;
|
||
edit->force |= REDRAW_AFTER_CURSOR;
|
||
}
|
||
edit_push_action (edit, p);
|
||
|
||
if (edit->curs1 < edit->start_display) {
|
||
edit->start_display--;
|
||
if (p == '\n')
|
||
edit->start_line--;
|
||
}
|
||
edit_modification (edit);
|
||
|
||
return p;
|
||
}
|
||
|
||
#ifdef FAST_MOVE_CURSOR
|
||
|
||
#define memqcpy(edit,d,s,i) \
|
||
{ \
|
||
unsigned long next; \
|
||
char *dest = d; \
|
||
char *src = s; \
|
||
int n = i; \
|
||
while ((next = \
|
||
(unsigned long) memccpy (dest, src, '\n', n))) { \
|
||
edit->curs_line--; \
|
||
next -= (unsigned long) dest; \
|
||
n -= next; \
|
||
src += next; \
|
||
dest += next; \
|
||
} \
|
||
}
|
||
|
||
int edit_move_backward_lots (WEdit * edit, long increment)
|
||
{
|
||
int r, s, t;
|
||
char *p;
|
||
|
||
if (increment > edit->curs1)
|
||
increment = edit->curs1;
|
||
if (increment <= 0)
|
||
return -1;
|
||
edit_push_action (edit, CURS_RIGHT_LOTS, increment);
|
||
|
||
t = r = EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE);
|
||
if (r > increment)
|
||
r = increment;
|
||
s = edit->curs1 & M_EDIT_BUF_SIZE;
|
||
|
||
p = 0;
|
||
if (s > r) {
|
||
memqcpy (edit, edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] + t - r,
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] + s - r, r);
|
||
} else {
|
||
if (s) {
|
||
memqcpy (edit, edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] + t - s,
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE], s);
|
||
p = edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE];
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = 0;
|
||
}
|
||
memqcpy (edit, edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] + t - r,
|
||
edit->buffers1[(edit->curs1 >> S_EDIT_BUF_SIZE) - 1] + EDIT_BUF_SIZE - (r - s), r - s);
|
||
}
|
||
increment -= r;
|
||
edit->curs1 -= r;
|
||
edit->curs2 += r;
|
||
if (!(edit->curs2 & M_EDIT_BUF_SIZE)) {
|
||
if (p)
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = p;
|
||
else
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
} else {
|
||
if (p)
|
||
free (p);
|
||
}
|
||
|
||
s = edit->curs1 & M_EDIT_BUF_SIZE;
|
||
while (increment) {
|
||
p = 0;
|
||
r = EDIT_BUF_SIZE;
|
||
if (r > increment)
|
||
r = increment;
|
||
t = s;
|
||
if (r < t)
|
||
t = r;
|
||
memqcpy (edit,
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] + EDIT_BUF_SIZE - t,
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] + s - t,
|
||
t);
|
||
if (r >= s) {
|
||
if (t) {
|
||
p = edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE];
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = 0;
|
||
}
|
||
memqcpy (edit,
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] + EDIT_BUF_SIZE - r,
|
||
edit->buffers1[(edit->curs1 >> S_EDIT_BUF_SIZE) - 1] + EDIT_BUF_SIZE - (r - s),
|
||
r - s);
|
||
}
|
||
increment -= r;
|
||
edit->curs1 -= r;
|
||
edit->curs2 += r;
|
||
if (!(edit->curs2 & M_EDIT_BUF_SIZE)) {
|
||
if (p)
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = p;
|
||
else
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
} else {
|
||
if (p)
|
||
free (p);
|
||
}
|
||
}
|
||
return edit_get_byte (edit, edit->curs1);
|
||
}
|
||
|
||
#endif /* ! FAST_MOVE_CURSOR */
|
||
|
||
/* moves the curser right or left: increment positive or negative respectively */
|
||
int edit_cursor_move (WEdit * edit, long increment)
|
||
{
|
||
/* this is the same as a combination of two of the above routines, with only one push onto the undo stack */
|
||
int c;
|
||
|
||
#ifdef FAST_MOVE_CURSOR
|
||
if (increment < -256) {
|
||
edit->force |= REDRAW_PAGE;
|
||
return edit_move_backward_lots (edit, -increment);
|
||
}
|
||
#endif /* ! FAST_MOVE_CURSOR */
|
||
|
||
if (increment < 0) {
|
||
for (; increment < 0; increment++) {
|
||
if (!edit->curs1)
|
||
return -1;
|
||
|
||
edit_push_action (edit, CURS_RIGHT);
|
||
|
||
c = edit_get_byte (edit, edit->curs1 - 1);
|
||
if (!((edit->curs2 + 1) & M_EDIT_BUF_SIZE))
|
||
edit->buffers2[(edit->curs2 + 1) >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE][EDIT_BUF_SIZE - (edit->curs2 & M_EDIT_BUF_SIZE) - 1] = c;
|
||
edit->curs2++;
|
||
c = edit->buffers1[(edit->curs1 - 1) >> S_EDIT_BUF_SIZE][(edit->curs1 - 1) & M_EDIT_BUF_SIZE];
|
||
if (!((edit->curs1 - 1) & M_EDIT_BUF_SIZE)) {
|
||
free (edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE]);
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = NULL;
|
||
}
|
||
edit->curs1--;
|
||
if (c == '\n') {
|
||
edit->curs_line--;
|
||
edit->force |= REDRAW_LINE_BELOW;
|
||
}
|
||
}
|
||
|
||
return c;
|
||
} else if (increment > 0) {
|
||
for (; increment > 0; increment--) {
|
||
if (!edit->curs2)
|
||
return -2;
|
||
|
||
edit_push_action (edit, CURS_LEFT);
|
||
|
||
c = edit_get_byte (edit, edit->curs1);
|
||
if (!(edit->curs1 & M_EDIT_BUF_SIZE))
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE] = malloc (EDIT_BUF_SIZE);
|
||
edit->buffers1[edit->curs1 >> S_EDIT_BUF_SIZE][edit->curs1 & M_EDIT_BUF_SIZE] = c;
|
||
edit->curs1++;
|
||
c = edit->buffers2[(edit->curs2 - 1) >> S_EDIT_BUF_SIZE][EDIT_BUF_SIZE - ((edit->curs2 - 1) & M_EDIT_BUF_SIZE) - 1];
|
||
if (!(edit->curs2 & M_EDIT_BUF_SIZE)) {
|
||
free (edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE]);
|
||
edit->buffers2[edit->curs2 >> S_EDIT_BUF_SIZE] = 0;
|
||
}
|
||
edit->curs2--;
|
||
if (c == '\n') {
|
||
edit->curs_line++;
|
||
edit->force |= REDRAW_LINE_ABOVE;
|
||
}
|
||
}
|
||
return c;
|
||
} else
|
||
return -3;
|
||
}
|
||
|
||
/* These functions return positions relative to lines */
|
||
|
||
/* returns index of last char on line + 1 */
|
||
long edit_eol (WEdit * edit, long current)
|
||
{
|
||
if (current < edit->last_byte) {
|
||
for (;; current++)
|
||
if (edit_get_byte (edit, current) == '\n')
|
||
break;
|
||
} else
|
||
return edit->last_byte;
|
||
return current;
|
||
}
|
||
|
||
/* returns index of first char on line */
|
||
long edit_bol (WEdit * edit, long current)
|
||
{
|
||
if (current > 0) {
|
||
for (;; current--)
|
||
if (edit_get_byte (edit, current - 1) == '\n')
|
||
break;
|
||
} else
|
||
return 0;
|
||
return current;
|
||
}
|
||
|
||
|
||
int edit_count_lines (WEdit * edit, long current, int upto)
|
||
{
|
||
int lines = 0;
|
||
if (upto > edit->last_byte)
|
||
upto = edit->last_byte;
|
||
if (current < 0)
|
||
current = 0;
|
||
while (current < upto)
|
||
if (edit_get_byte (edit, current++) == '\n')
|
||
lines++;
|
||
return lines;
|
||
}
|
||
|
||
|
||
/* If lines is zero this returns the count of lines from current to upto. */
|
||
/* If upto is zero returns index of lines forward current. */
|
||
long edit_move_forward (WEdit * edit, long current, int lines, long upto)
|
||
{
|
||
if (upto) {
|
||
return edit_count_lines (edit, current, upto);
|
||
} else {
|
||
int next;
|
||
if (lines < 0)
|
||
lines = 0;
|
||
while (lines--) {
|
||
next = edit_eol (edit, current) + 1;
|
||
if (next > edit->last_byte)
|
||
break;
|
||
else
|
||
current = next;
|
||
}
|
||
return current;
|
||
}
|
||
}
|
||
|
||
|
||
/* Returns offset of 'lines' lines up from current */
|
||
long edit_move_backward (WEdit * edit, long current, int lines)
|
||
{
|
||
if (lines < 0)
|
||
lines = 0;
|
||
current = edit_bol (edit, current);
|
||
while((lines--) && current != 0)
|
||
current = edit_bol (edit, current - 1);
|
||
return current;
|
||
}
|
||
|
||
#ifdef MIDNIGHT
|
||
/* If cols is zero this returns the count of columns from current to upto. */
|
||
/* If upto is zero returns index of cols across from current. */
|
||
long edit_move_forward3 (WEdit * edit, long current, int cols, long upto)
|
||
{
|
||
long p, q;
|
||
int col = 0;
|
||
|
||
if (upto) {
|
||
q = upto;
|
||
cols = -10;
|
||
} else
|
||
q = edit->last_byte + 2;
|
||
|
||
for (col = 0, p = current; p < q; p++) {
|
||
int c;
|
||
if (cols != -10) {
|
||
if (col == cols)
|
||
return p;
|
||
if (col > cols)
|
||
return p - 1;
|
||
}
|
||
c = edit_get_byte (edit, p);
|
||
if (c == '\r')
|
||
continue;
|
||
else
|
||
if (c == '\t')
|
||
col += TAB_SIZE - col % TAB_SIZE;
|
||
else
|
||
col++;
|
||
/*if(edit->nroff ... */
|
||
if (c == '\n') {
|
||
if (upto)
|
||
return col;
|
||
else
|
||
return p;
|
||
}
|
||
}
|
||
return (float) col;
|
||
}
|
||
#endif
|
||
|
||
/* returns the current column position of the cursor */
|
||
int edit_get_col (WEdit * edit)
|
||
{
|
||
return edit_move_forward3 (edit, edit_bol (edit, edit->curs1), 0, edit->curs1);
|
||
}
|
||
|
||
|
||
/* Scrolling functions */
|
||
|
||
void edit_update_curs_row (WEdit * edit)
|
||
{
|
||
edit->curs_row = edit->curs_line - edit->start_line;
|
||
}
|
||
|
||
void edit_update_curs_col (WEdit * edit)
|
||
{
|
||
edit->curs_col = edit_move_forward3(edit, edit_bol(edit, edit->curs1), 0, edit->curs1);
|
||
}
|
||
|
||
/*moves the display start position up by i lines */
|
||
void edit_scroll_upward (WEdit * edit, unsigned long i)
|
||
{
|
||
int lines_above = edit->start_line;
|
||
if (i > lines_above)
|
||
i = lines_above;
|
||
if (i) {
|
||
edit->start_line -= i;
|
||
edit->start_display = edit_move_backward (edit, edit->start_display, i);
|
||
edit->force |= REDRAW_PAGE;
|
||
edit->force &= (0xfff - REDRAW_CHAR_ONLY);
|
||
}
|
||
edit_update_curs_row(edit);
|
||
}
|
||
|
||
|
||
/* returns 1 if could scroll, 0 otherwise */
|
||
void edit_scroll_downward (WEdit * edit, int i)
|
||
{
|
||
int lines_below;
|
||
lines_below = edit->total_lines - edit->start_line - (edit->num_widget_lines - 1);
|
||
if (lines_below > 0) {
|
||
if (i > lines_below)
|
||
i = lines_below;
|
||
edit->start_line += i;
|
||
edit->start_display = edit_move_forward (edit, edit->start_display, i, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
edit->force &= (0xfff - REDRAW_CHAR_ONLY);
|
||
}
|
||
edit_update_curs_row(edit);
|
||
}
|
||
|
||
void edit_scroll_right (WEdit * edit, int i)
|
||
{
|
||
edit->force |= REDRAW_PAGE;
|
||
edit->force &= (0xfff - REDRAW_CHAR_ONLY);
|
||
edit->start_col -= i;
|
||
}
|
||
|
||
void edit_scroll_left (WEdit * edit, int i)
|
||
{
|
||
if (edit->start_col) {
|
||
edit->start_col += i;
|
||
if (edit->start_col > 0)
|
||
edit->start_col = 0;
|
||
edit->force |= REDRAW_PAGE;
|
||
edit->force &= (0xfff - REDRAW_CHAR_ONLY);
|
||
}
|
||
}
|
||
|
||
/* high level cursor movement commands */
|
||
|
||
static int is_in_indent (WEdit *edit)
|
||
{
|
||
long p = edit_bol (edit, edit->curs1);
|
||
while (p < edit->curs1)
|
||
if (!strchr (" \t", edit_get_byte (edit, p++)))
|
||
return 0;
|
||
return 1;
|
||
}
|
||
|
||
static int left_of_four_spaces (WEdit *edit);
|
||
|
||
void edit_move_to_prev_col (WEdit * edit, long p)
|
||
{
|
||
edit_cursor_move (edit, edit_move_forward3 (edit, p, edit->prev_col, 0) - edit->curs1);
|
||
|
||
if (is_in_indent (edit) && option_fake_half_tabs) {
|
||
edit_update_curs_col (edit);
|
||
if (space_width)
|
||
if (edit->curs_col % (HALF_TAB_SIZE * space_width)) {
|
||
int q = edit->curs_col;
|
||
edit->curs_col -= (edit->curs_col % (HALF_TAB_SIZE * space_width));
|
||
p = edit_bol (edit, edit->curs1);
|
||
edit_cursor_move (edit, edit_move_forward3 (edit, p, edit->curs_col, 0) - edit->curs1);
|
||
if (!left_of_four_spaces (edit))
|
||
edit_cursor_move (edit, edit_move_forward3 (edit, p, q, 0) - edit->curs1);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* move i lines */
|
||
void edit_move_up (WEdit * edit, unsigned long i, int scroll)
|
||
{
|
||
long p, l = edit->curs_line;
|
||
|
||
if (i > l)
|
||
i = l;
|
||
if (i) {
|
||
if (i > 1)
|
||
edit->force |= REDRAW_PAGE;
|
||
if (scroll)
|
||
edit_scroll_upward (edit, i);
|
||
|
||
p = edit_bol (edit, edit->curs1);
|
||
edit_cursor_move (edit, (p = edit_move_backward (edit, p, i)) - edit->curs1);
|
||
edit_move_to_prev_col (edit, p);
|
||
|
||
edit->search_start = edit->curs1;
|
||
edit->found_len = 0;
|
||
}
|
||
}
|
||
|
||
int is_blank (WEdit * edit, long offset)
|
||
{
|
||
long s, f;
|
||
int c;
|
||
s = edit_bol (edit, offset);
|
||
f = edit_eol (edit, offset) - 1;
|
||
while (s <= f) {
|
||
c = edit_get_byte (edit, s++);
|
||
if ((c > ' ' && c <= '~') || c >= 160) /* non-printables on a line are considered "blank" */
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* returns the offset of line i */
|
||
long edit_find_line (WEdit * edit, int line)
|
||
{
|
||
int i, j = 0;
|
||
int m = 1000000000;
|
||
if (!edit->caches_valid) {
|
||
for (i = 0; i < N_LINE_CACHES; i++)
|
||
edit->line_numbers[i] = edit->line_offsets[i] = 0;
|
||
/* three offsets that we *know* are line 0 at 0 and these two: */
|
||
edit->line_numbers[1] = edit->curs_line;
|
||
edit->line_offsets[1] = edit_bol (edit, edit->curs1);
|
||
edit->line_numbers[2] = edit->total_lines;
|
||
edit->line_offsets[2] = edit_bol (edit, edit->last_byte);
|
||
edit->caches_valid = 1;
|
||
}
|
||
/* find the closest known point */
|
||
for (i = 0; i < N_LINE_CACHES; i++) {
|
||
int n;
|
||
n = abs (edit->line_numbers[i] - line);
|
||
if (n < m) {
|
||
m = n;
|
||
j = i;
|
||
}
|
||
}
|
||
if (m == 0)
|
||
return edit->line_offsets[j]; /* know the offset exactly */
|
||
if (m == 1)
|
||
i = j; /* one line different - caller might be looping, so stay in this cache */
|
||
else
|
||
i = 3 + (rand () % (N_LINE_CACHES - 3));
|
||
if (line > edit->line_numbers[j])
|
||
edit->line_offsets[i] = edit_move_forward (edit, edit->line_offsets[j], line - edit->line_numbers[j], 0);
|
||
else
|
||
edit->line_offsets[i] = edit_move_backward (edit, edit->line_offsets[j], edit->line_numbers[j] - line);
|
||
edit->line_numbers[i] = line;
|
||
return edit->line_offsets[i];
|
||
}
|
||
|
||
int line_is_blank (WEdit * edit, long line)
|
||
{
|
||
return is_blank (edit, edit_find_line (edit, line));
|
||
}
|
||
|
||
/* moves up until a blank line is reached, or until just
|
||
before a non-blank line is reached */
|
||
static void edit_move_up_paragraph (WEdit * edit, int scroll)
|
||
{
|
||
int i;
|
||
if (edit->curs_line <= 1) {
|
||
i = 0;
|
||
} else {
|
||
if (line_is_blank (edit, edit->curs_line)) {
|
||
if (line_is_blank (edit, edit->curs_line - 1)) {
|
||
for (i = edit->curs_line - 1; i; i--)
|
||
if (!line_is_blank (edit, i)) {
|
||
i++;
|
||
break;
|
||
}
|
||
} else {
|
||
for (i = edit->curs_line - 1; i; i--)
|
||
if (line_is_blank (edit, i))
|
||
break;
|
||
}
|
||
} else {
|
||
for (i = edit->curs_line - 1; i; i--)
|
||
if (line_is_blank (edit, i))
|
||
break;
|
||
}
|
||
}
|
||
edit_move_up (edit, edit->curs_line - i, scroll);
|
||
}
|
||
|
||
/* move i lines */
|
||
void edit_move_down (WEdit * edit, int i, int scroll)
|
||
{
|
||
long p, l = edit->total_lines - edit->curs_line;
|
||
|
||
if (i > l)
|
||
i = l;
|
||
if (i) {
|
||
if (i > 1)
|
||
edit->force |= REDRAW_PAGE;
|
||
if (scroll)
|
||
edit_scroll_downward (edit, i);
|
||
p = edit_bol (edit, edit->curs1);
|
||
edit_cursor_move (edit, (p = edit_move_forward (edit, p, i, 0)) - edit->curs1);
|
||
edit_move_to_prev_col (edit, p);
|
||
|
||
edit->search_start = edit->curs1;
|
||
edit->found_len = 0;
|
||
}
|
||
}
|
||
|
||
/* moves down until a blank line is reached, or until just
|
||
before a non-blank line is reached */
|
||
static void edit_move_down_paragraph (WEdit * edit, int scroll)
|
||
{
|
||
int i;
|
||
if (edit->curs_line >= edit->total_lines - 1) {
|
||
i = edit->total_lines;
|
||
} else {
|
||
if (line_is_blank (edit, edit->curs_line)) {
|
||
if (line_is_blank (edit, edit->curs_line + 1)) {
|
||
for (i = edit->curs_line + 1; i; i++)
|
||
if (!line_is_blank (edit, i) || i > edit->total_lines) {
|
||
i--;
|
||
break;
|
||
}
|
||
} else {
|
||
for (i = edit->curs_line + 1; i; i++)
|
||
if (line_is_blank (edit, i) || i >= edit->total_lines)
|
||
break;
|
||
}
|
||
} else {
|
||
for (i = edit->curs_line + 1; i; i++)
|
||
if (line_is_blank (edit, i) || i >= edit->total_lines)
|
||
break;
|
||
}
|
||
}
|
||
edit_move_down (edit, i - edit->curs_line, scroll);
|
||
}
|
||
|
||
static void edit_begin_page (WEdit *edit)
|
||
{
|
||
edit_update_curs_row (edit);
|
||
edit_move_up (edit, edit->curs_row, 0);
|
||
}
|
||
|
||
static void edit_end_page (WEdit *edit)
|
||
{
|
||
edit_update_curs_row (edit);
|
||
edit_move_down (edit, edit->num_widget_lines - edit->curs_row - 1, 0);
|
||
}
|
||
|
||
|
||
/* goto beginning of text */
|
||
static void edit_move_to_top (WEdit * edit)
|
||
{
|
||
if (edit->curs_line) {
|
||
edit_cursor_move (edit, -edit->curs1);
|
||
edit_move_to_prev_col (edit, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
edit->search_start = 0;
|
||
edit_update_curs_row(edit);
|
||
}
|
||
}
|
||
|
||
|
||
/* goto end of text */
|
||
static void edit_move_to_bottom (WEdit * edit)
|
||
{
|
||
if (edit->curs_line < edit->total_lines) {
|
||
edit_cursor_move (edit, edit->curs2);
|
||
edit->start_display = edit->last_byte;
|
||
edit->start_line = edit->total_lines;
|
||
edit_update_curs_row(edit);
|
||
edit_scroll_upward (edit, edit->num_widget_lines - 1);
|
||
edit->force |= REDRAW_PAGE;
|
||
}
|
||
}
|
||
|
||
/* goto beginning of line */
|
||
static void edit_cursor_to_bol (WEdit * edit)
|
||
{
|
||
edit_cursor_move (edit, edit_bol (edit, edit->curs1) - edit->curs1);
|
||
edit->search_start = edit->curs1;
|
||
edit->prev_col = edit_get_col (edit);
|
||
}
|
||
|
||
/* goto end of line */
|
||
static void edit_cursor_to_eol (WEdit * edit)
|
||
{
|
||
edit_cursor_move (edit, edit_eol (edit, edit->curs1) - edit->curs1);
|
||
edit->search_start = edit->curs1;
|
||
edit->prev_col = edit_get_col (edit);
|
||
}
|
||
|
||
/* move cursor to line 'line' */
|
||
void edit_move_to_line (WEdit * e, long line)
|
||
{
|
||
if(line < e->curs_line)
|
||
edit_move_up (e, e->curs_line - line, 0);
|
||
else
|
||
edit_move_down (e, line - e->curs_line, 0);
|
||
edit_scroll_screen_over_cursor (e);
|
||
}
|
||
|
||
/* scroll window so that first visible line is 'line' */
|
||
void edit_move_display (WEdit * e, long line)
|
||
{
|
||
if(line < e->start_line)
|
||
edit_scroll_upward (e, e->start_line - line);
|
||
else
|
||
edit_scroll_downward (e, line - e->start_line);
|
||
}
|
||
|
||
/* save markers onto undo stack */
|
||
void edit_push_markers (WEdit * edit)
|
||
{
|
||
edit_push_action (edit, MARK_1 + edit->mark1);
|
||
edit_push_action (edit, MARK_2 + edit->mark2);
|
||
}
|
||
|
||
void free_selections (void)
|
||
{
|
||
int i;
|
||
for (i = 0; i < NUM_SELECTION_HISTORY; i++)
|
||
if (selection_history[i].text) {
|
||
free (selection_history[i].text);
|
||
selection_history[i].text = 0;
|
||
selection_history[i].len = 0;
|
||
}
|
||
current_selection = 0;
|
||
}
|
||
|
||
/* return -1 on nothing to store or error, zero otherwise */
|
||
void edit_get_selection (WEdit * edit)
|
||
{
|
||
long start_mark, end_mark;
|
||
if (eval_marks (edit, &start_mark, &end_mark))
|
||
return;
|
||
if (selection_history[current_selection].len < 4096) /* large selections should not be held -- to save memory */
|
||
current_selection = (current_selection + 1) % NUM_SELECTION_HISTORY;
|
||
selection_history[current_selection].len = end_mark - start_mark;
|
||
if (selection_history[current_selection].text)
|
||
free (selection_history[current_selection].text);
|
||
selection_history[current_selection].text = malloc (selection_history[current_selection].len + 1);
|
||
if (!selection_history[current_selection].text) {
|
||
selection_history[current_selection].text = malloc (1);
|
||
*selection_history[current_selection].text = 0;
|
||
selection_history[current_selection].len = 0;
|
||
} else {
|
||
unsigned char *p = selection_history[current_selection].text;
|
||
for (; start_mark < end_mark; start_mark++)
|
||
*p++ = edit_get_byte (edit, start_mark);
|
||
*p = 0;
|
||
}
|
||
selection.text = selection_history[current_selection].text;
|
||
selection.len = selection_history[current_selection].len;
|
||
}
|
||
|
||
void edit_set_markers (WEdit * edit, long m1, long m2, int c1, int c2)
|
||
{
|
||
edit->mark1 = m1;
|
||
edit->mark2 = m2;
|
||
edit->column1 = c1;
|
||
edit->column2 = c2;
|
||
}
|
||
|
||
|
||
/* highlight marker toggle */
|
||
void edit_mark_cmd (WEdit * edit, int unmark)
|
||
{
|
||
edit_push_markers (edit);
|
||
if (unmark) {
|
||
edit_set_markers (edit, 0, 0, 0, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
} else {
|
||
if (edit->mark2 >= 0) {
|
||
edit_set_markers (edit, edit->curs1, -1, edit->curs_col, edit->curs_col);
|
||
edit->force |= REDRAW_PAGE;
|
||
} else
|
||
edit_set_markers (edit, edit->mark1, edit->curs1, edit->column1, edit->curs_col);
|
||
}
|
||
}
|
||
|
||
int my_type_of (int c)
|
||
{
|
||
if (c < ' ' && c > 0)
|
||
return 1;
|
||
if (strchr ("+_-.", c))
|
||
if (strchr (option_whole_chars_move, c))
|
||
return 3;
|
||
if (!strcasechr (option_whole_chars_move, c))
|
||
return 2;
|
||
if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c >= 160)
|
||
return 3;
|
||
return c;
|
||
}
|
||
|
||
void edit_left_word_move (WEdit * edit)
|
||
{
|
||
do {
|
||
edit_cursor_move (edit, -1);
|
||
if (!edit->curs1)
|
||
break;
|
||
} while (my_type_of (edit_get_byte (edit, edit->curs1))
|
||
==
|
||
my_type_of (edit_get_byte (edit, edit->curs1 - 1)));
|
||
}
|
||
|
||
static void edit_left_word_move_cmd (WEdit * edit)
|
||
{
|
||
edit_left_word_move (edit);
|
||
if (strchr (option_whole_chars_move, ' '))
|
||
if (strchr ("\t ", edit_get_byte (edit, edit->curs1)))
|
||
edit_left_word_move (edit);
|
||
edit->force |= REDRAW_PAGE;
|
||
}
|
||
|
||
void edit_right_word_move (WEdit * edit)
|
||
{
|
||
do {
|
||
edit_cursor_move (edit, 1);
|
||
if (edit->curs1 >= edit->last_byte)
|
||
break;
|
||
} while (my_type_of (edit_get_byte (edit, edit->curs1 - 1))
|
||
==
|
||
my_type_of (edit_get_byte (edit, edit->curs1)));
|
||
}
|
||
|
||
static void edit_right_word_move_cmd (WEdit * edit)
|
||
{
|
||
edit_right_word_move (edit);
|
||
if (strchr (option_whole_chars_move, ' '))
|
||
if (strchr ("\t ", edit_get_byte (edit, edit->curs1)))
|
||
edit_right_word_move (edit);
|
||
edit->force |= REDRAW_PAGE;
|
||
}
|
||
|
||
|
||
static void edit_right_delete_word (WEdit * edit)
|
||
{
|
||
int c;
|
||
do {
|
||
c = edit_delete (edit);
|
||
} while (my_type_of (c) == my_type_of (edit_get_byte (edit, edit->curs1)));
|
||
}
|
||
|
||
static void edit_left_delete_word (WEdit * edit)
|
||
{
|
||
int c;
|
||
do {
|
||
c = edit_backspace (edit);
|
||
} while (my_type_of (c) == my_type_of (edit_get_byte (edit, edit->curs1 - 1)));
|
||
}
|
||
|
||
extern int column_highlighting;
|
||
|
||
/*
|
||
the start column position is not recorded, and hence does not
|
||
undo as it happed. But who would notice.
|
||
*/
|
||
void edit_do_undo (WEdit * edit)
|
||
{
|
||
long ac;
|
||
long count = 0;
|
||
|
||
push_action_disabled = 1; /* don't record undo's onto undo stack! */
|
||
|
||
while ((ac = pop_action (edit)) < KEY_PRESS) {
|
||
switch ((int) ac) {
|
||
case STACK_BOTTOM:
|
||
goto done_undo;
|
||
case CURS_RIGHT:
|
||
edit_cursor_move (edit, 1);
|
||
break;
|
||
case CURS_LEFT:
|
||
edit_cursor_move (edit, -1);
|
||
break;
|
||
case BACKSPACE:
|
||
edit_backspace (edit);
|
||
break;
|
||
case DELETE:
|
||
edit_delete (edit);
|
||
break;
|
||
case COLUMN_ON:
|
||
column_highlighting = 1;
|
||
break;
|
||
case COLUMN_OFF:
|
||
column_highlighting = 0;
|
||
break;
|
||
}
|
||
if (ac >= 256 && ac < 512)
|
||
edit_insert_ahead (edit, ac - 256);
|
||
if (ac >= 0 && ac < 256)
|
||
edit_insert (edit, ac);
|
||
|
||
if (ac >= MARK_1 - 2 && ac < MARK_2 - 2) {
|
||
edit->mark1 = ac - MARK_1;
|
||
edit->column1 = edit_move_forward3 (edit, edit_bol (edit, edit->mark1), 0, edit->mark1);
|
||
} else if (ac >= MARK_2 - 2 && ac < KEY_PRESS) {
|
||
edit->mark2 = ac - MARK_2;
|
||
edit->column2 = edit_move_forward3 (edit, edit_bol (edit, edit->mark2), 0, edit->mark2);
|
||
}
|
||
if (count++)
|
||
edit->force |= REDRAW_PAGE; /* more than one pop usually means something big */
|
||
}
|
||
|
||
if (edit->start_display > ac - KEY_PRESS) {
|
||
edit->start_line -= edit_count_lines (edit, ac - KEY_PRESS, edit->start_display);
|
||
edit->force |= REDRAW_PAGE;
|
||
} else if (edit->start_display < ac - KEY_PRESS) {
|
||
edit->start_line += edit_count_lines (edit, edit->start_display, ac - KEY_PRESS);
|
||
edit->force |= REDRAW_PAGE;
|
||
}
|
||
edit->start_display = ac - KEY_PRESS; /* see push and pop above */
|
||
edit_update_curs_row (edit);
|
||
|
||
done_undo:;
|
||
push_action_disabled = 0;
|
||
}
|
||
|
||
static void edit_delete_to_line_end (WEdit * edit)
|
||
{
|
||
for (;;) {
|
||
if (edit_get_byte (edit, edit->curs1) == '\n')
|
||
break;
|
||
if (!edit->curs2)
|
||
break;
|
||
edit_delete (edit);
|
||
}
|
||
}
|
||
|
||
static void edit_delete_to_line_begin (WEdit * edit)
|
||
{
|
||
for (;;) {
|
||
if (edit_get_byte (edit, edit->curs1 - 1) == '\n')
|
||
break;
|
||
if (!edit->curs1)
|
||
break;
|
||
edit_backspace (edit);
|
||
}
|
||
}
|
||
|
||
void edit_delete_line (WEdit * edit)
|
||
{
|
||
int c;
|
||
do {
|
||
c = edit_delete (edit);
|
||
} while (c != '\n' && c);
|
||
do {
|
||
c = edit_backspace (edit);
|
||
} while (c != '\n' && c);
|
||
if (c)
|
||
edit_insert (edit, '\n');
|
||
}
|
||
|
||
static void insert_spaces_tab (WEdit * edit)
|
||
{
|
||
int i = option_tab_spacing;
|
||
while (i--)
|
||
edit_insert (edit, ' ');
|
||
}
|
||
|
||
static int is_aligned_on_a_tab (WEdit * edit)
|
||
{
|
||
edit_update_curs_col (edit);
|
||
if ((edit->curs_col % (TAB_SIZE * space_width)) && edit->curs_col % (TAB_SIZE * space_width) != (HALF_TAB_SIZE * space_width))
|
||
return 0; /* not alligned on a tab */
|
||
return 1;
|
||
}
|
||
|
||
static int right_of_four_spaces (WEdit *edit)
|
||
{
|
||
int i, ch = 0;
|
||
for (i = 1; i <= HALF_TAB_SIZE; i++)
|
||
ch |= edit_get_byte (edit, edit->curs1 - i);
|
||
if (ch == ' ')
|
||
return is_aligned_on_a_tab (edit);
|
||
return 0;
|
||
}
|
||
|
||
static int left_of_four_spaces (WEdit *edit)
|
||
{
|
||
int i, ch = 0;
|
||
for (i = 0; i < HALF_TAB_SIZE; i++)
|
||
ch |= edit_get_byte (edit, edit->curs1 + i);
|
||
if (ch == ' ')
|
||
return is_aligned_on_a_tab (edit);
|
||
return 0;
|
||
}
|
||
|
||
int edit_indent_width (WEdit * edit, long p)
|
||
{
|
||
long q = p;
|
||
while (strchr ("\t ", edit_get_byte (edit, q)) && q < edit->last_byte - 1) /* move to the end of the leading whitespace of the line */
|
||
q++;
|
||
return edit_move_forward3 (edit, p, 0, q); /* count the number of columns of indentation */
|
||
}
|
||
|
||
void edit_insert_indent (WEdit * edit, int indent)
|
||
{
|
||
#ifndef MIDNIGHT
|
||
indent /= space_width;
|
||
#endif
|
||
if (!option_fill_tabs_with_spaces) {
|
||
while (indent >= TAB_SIZE) {
|
||
edit_insert (edit, '\t');
|
||
indent -= TAB_SIZE;
|
||
}
|
||
}
|
||
while (indent--)
|
||
edit_insert (edit, ' ');
|
||
}
|
||
|
||
static void edit_auto_indent (WEdit * edit, int always)
|
||
{
|
||
long p;
|
||
int indent;
|
||
p = edit->curs1;
|
||
while (strchr ("\t\n\r ", edit_get_byte (edit, p - 1)) && p > 0) /* move back/up to a line with text */
|
||
p--;
|
||
indent = edit_indent_width (edit, edit_bol (edit, p));
|
||
if (edit->curs_col < indent)
|
||
indent = edit->curs_col;
|
||
edit_insert_indent (edit, indent);
|
||
}
|
||
|
||
static void edit_double_newline (WEdit * edit)
|
||
{
|
||
edit_insert (edit, '\n');
|
||
if (edit_get_byte (edit, edit->curs1) == '\n')
|
||
return;
|
||
if (edit_get_byte (edit, edit->curs1 - 2) == '\n')
|
||
return;
|
||
edit->force |= REDRAW_PAGE;
|
||
edit_insert (edit, '\n');
|
||
}
|
||
|
||
static void edit_tab_cmd (WEdit * edit)
|
||
{
|
||
int i;
|
||
|
||
if (option_fake_half_tabs) {
|
||
if (is_in_indent (edit)) {
|
||
/*insert a half tab (usually four spaces) unless there is a
|
||
half tab already behind, then delete it and insert a
|
||
full tab. */
|
||
if (right_of_four_spaces (edit)) {
|
||
for (i = 1; i <= HALF_TAB_SIZE; i++)
|
||
edit_backspace (edit);
|
||
if (option_fill_tabs_with_spaces) {
|
||
insert_spaces_tab (edit);
|
||
} else {
|
||
edit_insert (edit, '\t');
|
||
}
|
||
} else {
|
||
for (i = 1; i <= HALF_TAB_SIZE; i++)
|
||
edit_insert (edit, ' ');
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
if (option_fill_tabs_with_spaces) {
|
||
insert_spaces_tab (edit);
|
||
} else {
|
||
edit_insert (edit, '\t');
|
||
}
|
||
return;
|
||
}
|
||
|
||
void format_paragraph (WEdit * edit, int force);
|
||
|
||
static void check_and_wrap_line (WEdit * edit)
|
||
{
|
||
int curs, c;
|
||
if (!option_typewriter_wrap)
|
||
return;
|
||
edit_update_curs_col (edit);
|
||
#ifdef MIDNIGHT
|
||
if (edit->curs_col < option_word_wrap_line_length)
|
||
#else
|
||
if (edit->curs_col < option_word_wrap_line_length * FONT_MEAN_WIDTH)
|
||
#endif
|
||
return;
|
||
curs = edit->curs1;
|
||
for (;;) {
|
||
curs--;
|
||
c = edit_get_byte (edit, curs);
|
||
if (c == '\n' || curs <= 0) {
|
||
edit_insert (edit, '\n');
|
||
return;
|
||
}
|
||
if (c == ' ' || c == '\t') {
|
||
int current = edit->curs1;
|
||
edit_cursor_move (edit, curs - edit->curs1 + 1);
|
||
edit_insert (edit, '\n');
|
||
edit_cursor_move (edit, current - edit->curs1 + 1);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
void edit_execute_macro (WEdit * edit, struct macro macro[], int n);
|
||
|
||
/* either command or char_for_insertion must be passed as -1 */
|
||
int edit_execute_cmd (WEdit * edit, int command, int char_for_insertion);
|
||
|
||
#ifdef MIDNIGHT
|
||
int edit_translate_key (WEdit * edit, unsigned int x_keycode, long x_key, int x_state, int *cmd, int *ch)
|
||
{
|
||
int command = -1;
|
||
int char_for_insertion = -1;
|
||
|
||
#include "edit_key_translator.c"
|
||
|
||
*cmd = command;
|
||
*ch = char_for_insertion;
|
||
|
||
if((command == -1 || command == 0) && char_for_insertion == -1) /* unchanged, key has no function here */
|
||
return 0;
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
void edit_push_key_press (WEdit * edit)
|
||
{
|
||
edit_push_action (edit, KEY_PRESS + edit->start_display);
|
||
if (edit->mark2 == -1)
|
||
edit_push_action (edit, MARK_1 + edit->mark1);
|
||
}
|
||
|
||
/* this find the matching bracket in either direction, and sets edit->bracket */
|
||
void edit_find_bracket (WEdit * edit)
|
||
{
|
||
if (option_find_bracket) {
|
||
const char *b = "{}{[][()(", *p;
|
||
static int last_bracket = -1;
|
||
int i = 1, a, inc = -1, c, d, n = 0, j = 0;
|
||
long q;
|
||
|
||
edit->bracket = -1;
|
||
c = edit_get_byte (edit, edit->curs1);
|
||
p = strchr (b, c);
|
||
edit_update_curs_row (edit);
|
||
if (p) {
|
||
d = p[1];
|
||
if (strchr ("{[(", c))
|
||
inc = 1;
|
||
for (q = edit->curs1 + inc;; q += inc) {
|
||
if (q >= edit->last_byte || q < edit->start_display || j++ > 10000)
|
||
break;
|
||
a = edit_get_byte (edit, q);
|
||
if (inc > 0 && a == '\n')
|
||
n++;
|
||
if (n >= edit->num_widget_lines - edit->curs_row) /* out of screen */
|
||
break;
|
||
i += (a == c) - (a == d);
|
||
if (!i) {
|
||
edit->bracket = q;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (last_bracket != edit->bracket)
|
||
edit->force |= REDRAW_PAGE;
|
||
last_bracket = edit->bracket;
|
||
}
|
||
}
|
||
|
||
|
||
/* this executes a command as though the user initiated it through a key press. */
|
||
/* callback with WIDGET_KEY as a message calls this after translating the key
|
||
press */
|
||
/* this can be used to pass any command to the editor. Same as sendevent with
|
||
msg = WIDGET_COMMAND and par = command except the screen wouldn't update */
|
||
/* one of command or char_for_insertion must be passed as -1 */
|
||
/* commands are executed, and char_for_insertion is inserted at the cursor */
|
||
/* returns 0 if the command is a macro that was not found, 1 otherwise */
|
||
int edit_execute_key_command (WEdit * edit, int command, int char_for_insertion)
|
||
{
|
||
int r;
|
||
if (command == CK_Begin_Record_Macro) {
|
||
edit->macro_i = 0;
|
||
edit->force |= REDRAW_CHAR_ONLY | REDRAW_LINE;
|
||
return command;
|
||
}
|
||
if (command == CK_End_Record_Macro && edit->macro_i != -1) {
|
||
edit->force |= REDRAW_COMPLETELY;
|
||
edit_save_macro_cmd (edit, edit->macro, edit->macro_i);
|
||
edit->macro_i = -1;
|
||
return command;
|
||
}
|
||
if (edit->macro_i >= 0 && edit->macro_i < MAX_MACRO_LENGTH - 1) {
|
||
edit->macro[edit->macro_i].command = command;
|
||
edit->macro[edit->macro_i++].ch = char_for_insertion;
|
||
}
|
||
/* record the beginning of a set of editing actions initiated by a key press */
|
||
if (command != CK_Undo)
|
||
edit_push_key_press (edit);
|
||
|
||
r = edit_execute_cmd (edit, command, char_for_insertion);
|
||
#ifdef GTK
|
||
if (edit->stopped && edit->widget->destroy_me) {
|
||
(*edit->widget->destroy_me) (edit->widget->destroy_me_user_data);
|
||
return 0;
|
||
}
|
||
#endif
|
||
if (column_highlighting)
|
||
edit->force |= REDRAW_PAGE;
|
||
|
||
return r;
|
||
}
|
||
|
||
#ifdef MIDNIGHT
|
||
static const char *shell_cmd[] = SHELL_COMMANDS_i
|
||
#else
|
||
static void (*user_commamd) (WEdit *, int) = 0;
|
||
void edit_set_user_command (void (*func) (WEdit *, int))
|
||
{
|
||
user_commamd = func;
|
||
}
|
||
|
||
#endif
|
||
|
||
void edit_mail_dialog (WEdit * edit);
|
||
|
||
/*
|
||
This executes a command at a lower level than macro recording.
|
||
It also does not push a key_press onto the undo stack. This means
|
||
that if it is called many times, a single undo command will undo
|
||
all of them. It also does not check for the Undo command.
|
||
Returns 0 if the command is a macro that was not found, 1
|
||
otherwise.
|
||
*/
|
||
int edit_execute_cmd (WEdit * edit, int command, int char_for_insertion)
|
||
{
|
||
int result = 1;
|
||
edit->force |= REDRAW_LINE;
|
||
if (edit->found_len || column_highlighting)
|
||
/* the next key press will unhighlight the found string, so update whole page */
|
||
edit->force |= REDRAW_PAGE;
|
||
|
||
if (command / 100 == 6) { /* a highlight command like shift-arrow */
|
||
column_highlighting = 0;
|
||
if (!edit->highlight || (edit->mark2 != -1 && edit->mark1 != edit->mark2)) {
|
||
edit_mark_cmd (edit, 1); /* clear */
|
||
edit_mark_cmd (edit, 0); /* marking on */
|
||
}
|
||
edit->highlight = 1;
|
||
} else { /* any other command */
|
||
if (edit->highlight)
|
||
edit_mark_cmd (edit, 0); /* clear */
|
||
edit->highlight = 0;
|
||
}
|
||
|
||
/* first check for undo */
|
||
if (command == CK_Undo) {
|
||
edit_do_undo (edit);
|
||
edit->found_len = 0;
|
||
edit->prev_col = edit_get_col (edit);
|
||
edit->search_start = edit->curs1;
|
||
return 1;
|
||
}
|
||
/* An ordinary key press */
|
||
if (char_for_insertion >= 0) {
|
||
if (edit->overwrite) {
|
||
if (edit_get_byte (edit, edit->curs1) != '\n')
|
||
edit_delete (edit);
|
||
}
|
||
edit_insert (edit, char_for_insertion);
|
||
if (option_auto_para_formatting) {
|
||
format_paragraph (edit, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
} else
|
||
check_and_wrap_line (edit);
|
||
edit->found_len = 0;
|
||
edit->prev_col = edit_get_col (edit);
|
||
edit->search_start = edit->curs1;
|
||
edit_find_bracket (edit);
|
||
return 1;
|
||
}
|
||
switch (command) {
|
||
case CK_Begin_Page:
|
||
case CK_End_Page:
|
||
case CK_Begin_Page_Highlight:
|
||
case CK_End_Page_Highlight:
|
||
case CK_Word_Left:
|
||
case CK_Word_Right:
|
||
case CK_Up:
|
||
case CK_Down:
|
||
case CK_Word_Left_Highlight:
|
||
case CK_Word_Right_Highlight:
|
||
case CK_Up_Highlight:
|
||
case CK_Down_Highlight:
|
||
if (edit->mark2 == -1)
|
||
break; /*marking is following the cursor: may need to highlight a whole line */
|
||
case CK_Left:
|
||
case CK_Right:
|
||
case CK_Left_Highlight:
|
||
case CK_Right_Highlight:
|
||
edit->force |= REDRAW_CHAR_ONLY;
|
||
}
|
||
|
||
/* basic cursor key commands */
|
||
switch (command) {
|
||
case CK_BackSpace:
|
||
if (option_backspace_through_tabs && is_in_indent (edit)) {
|
||
while (edit_get_byte (edit, edit->curs1 - 1) != '\n'
|
||
&& edit->curs1 > 0)
|
||
edit_backspace (edit);
|
||
break;
|
||
} else {
|
||
if (option_fake_half_tabs) {
|
||
int i;
|
||
if (is_in_indent (edit) && right_of_four_spaces (edit)) {
|
||
for (i = 0; i < HALF_TAB_SIZE; i++)
|
||
edit_backspace (edit);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
edit_backspace (edit);
|
||
break;
|
||
case CK_Delete:
|
||
if (option_fake_half_tabs) {
|
||
int i;
|
||
if (is_in_indent (edit) && left_of_four_spaces (edit)) {
|
||
for (i = 1; i <= HALF_TAB_SIZE; i++)
|
||
edit_delete (edit);
|
||
break;
|
||
}
|
||
}
|
||
edit_delete (edit);
|
||
break;
|
||
case CK_Delete_Word_Left:
|
||
edit_left_delete_word (edit);
|
||
break;
|
||
case CK_Delete_Word_Right:
|
||
edit_right_delete_word (edit);
|
||
break;
|
||
case CK_Delete_Line:
|
||
edit_delete_line (edit);
|
||
break;
|
||
case CK_Delete_To_Line_End:
|
||
edit_delete_to_line_end (edit);
|
||
break;
|
||
case CK_Delete_To_Line_Begin:
|
||
edit_delete_to_line_begin (edit);
|
||
break;
|
||
case CK_Enter:
|
||
if (option_auto_para_formatting) {
|
||
edit_double_newline (edit);
|
||
if (option_return_does_auto_indent)
|
||
edit_auto_indent (edit, 0);
|
||
format_paragraph (edit, 0);
|
||
} else if (option_return_does_auto_indent) {
|
||
edit_insert (edit, '\n');
|
||
edit_auto_indent (edit, 0);
|
||
} else {
|
||
edit_insert (edit, '\n');
|
||
}
|
||
break;
|
||
case CK_Return:
|
||
edit_insert (edit, '\n');
|
||
break;
|
||
|
||
case CK_Page_Up:
|
||
case CK_Page_Up_Highlight:
|
||
edit_move_up (edit, edit->num_widget_lines - 1, 1);
|
||
break;
|
||
case CK_Page_Down:
|
||
case CK_Page_Down_Highlight:
|
||
edit_move_down (edit, edit->num_widget_lines - 1, 1);
|
||
break;
|
||
case CK_Left:
|
||
case CK_Left_Highlight:
|
||
if (option_fake_half_tabs) {
|
||
if (is_in_indent (edit) && right_of_four_spaces (edit)) {
|
||
edit_cursor_move (edit, -HALF_TAB_SIZE);
|
||
edit->force &= (0xFFF - REDRAW_CHAR_ONLY);
|
||
break;
|
||
}
|
||
}
|
||
edit_cursor_move (edit, -1);
|
||
break;
|
||
case CK_Right:
|
||
case CK_Right_Highlight:
|
||
if (option_fake_half_tabs) {
|
||
if (is_in_indent (edit) && left_of_four_spaces (edit)) {
|
||
edit_cursor_move (edit, HALF_TAB_SIZE);
|
||
edit->force &= (0xFFF - REDRAW_CHAR_ONLY);
|
||
break;
|
||
}
|
||
}
|
||
edit_cursor_move (edit, 1);
|
||
break;
|
||
case CK_Begin_Page:
|
||
case CK_Begin_Page_Highlight:
|
||
edit_begin_page (edit);
|
||
break;
|
||
case CK_End_Page:
|
||
case CK_End_Page_Highlight:
|
||
edit_end_page (edit);
|
||
break;
|
||
case CK_Word_Left:
|
||
case CK_Word_Left_Highlight:
|
||
edit_left_word_move_cmd (edit);
|
||
break;
|
||
case CK_Word_Right:
|
||
case CK_Word_Right_Highlight:
|
||
edit_right_word_move_cmd (edit);
|
||
break;
|
||
case CK_Up:
|
||
case CK_Up_Highlight:
|
||
edit_move_up (edit, 1, 0);
|
||
break;
|
||
case CK_Down:
|
||
case CK_Down_Highlight:
|
||
edit_move_down (edit, 1, 0);
|
||
break;
|
||
case CK_Paragraph_Up:
|
||
case CK_Paragraph_Up_Highlight:
|
||
edit_move_up_paragraph (edit, 0);
|
||
break;
|
||
case CK_Paragraph_Down:
|
||
case CK_Paragraph_Down_Highlight:
|
||
edit_move_down_paragraph (edit, 0);
|
||
break;
|
||
case CK_Scroll_Up:
|
||
case CK_Scroll_Up_Highlight:
|
||
edit_move_up (edit, 1, 1);
|
||
break;
|
||
case CK_Scroll_Down:
|
||
case CK_Scroll_Down_Highlight:
|
||
edit_move_down (edit, 1, 1);
|
||
break;
|
||
case CK_Home:
|
||
case CK_Home_Highlight:
|
||
edit_cursor_to_bol (edit);
|
||
break;
|
||
case CK_End:
|
||
case CK_End_Highlight:
|
||
edit_cursor_to_eol (edit);
|
||
break;
|
||
|
||
case CK_Tab:
|
||
edit_tab_cmd (edit);
|
||
if (option_auto_para_formatting) {
|
||
format_paragraph (edit, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
} else
|
||
check_and_wrap_line (edit);
|
||
break;
|
||
|
||
case CK_Toggle_Insert:
|
||
edit->overwrite = (edit->overwrite == 0);
|
||
#ifndef MIDNIGHT
|
||
#ifdef GTK
|
||
/* *** */
|
||
#else
|
||
CSetCursorColor (edit->overwrite ? color_palette (24) : color_palette (19));
|
||
#endif
|
||
#endif
|
||
break;
|
||
|
||
case CK_Mark:
|
||
if (edit->mark2 >= 0) {
|
||
if (column_highlighting)
|
||
edit_push_action (edit, COLUMN_ON);
|
||
column_highlighting = 0;
|
||
}
|
||
edit_mark_cmd (edit, 0);
|
||
break;
|
||
case CK_Column_Mark:
|
||
if (!column_highlighting)
|
||
edit_push_action (edit, COLUMN_OFF);
|
||
column_highlighting = 1;
|
||
edit_mark_cmd (edit, 0);
|
||
break;
|
||
case CK_Unmark:
|
||
if (column_highlighting)
|
||
edit_push_action (edit, COLUMN_ON);
|
||
column_highlighting = 0;
|
||
edit_mark_cmd (edit, 1);
|
||
break;
|
||
|
||
case CK_Beginning_Of_Text:
|
||
case CK_Beginning_Of_Text_Highlight:
|
||
edit_move_to_top (edit);
|
||
break;
|
||
case CK_End_Of_Text:
|
||
case CK_End_Of_Text_Highlight:
|
||
edit_move_to_bottom (edit);
|
||
break;
|
||
|
||
case CK_Copy:
|
||
edit_block_copy_cmd (edit);
|
||
break;
|
||
case CK_Remove:
|
||
edit_block_delete_cmd (edit);
|
||
break;
|
||
case CK_Move:
|
||
edit_block_move_cmd (edit);
|
||
break;
|
||
|
||
case CK_XStore:
|
||
edit_copy_to_X_buf_cmd (edit);
|
||
break;
|
||
case CK_XCut:
|
||
edit_cut_to_X_buf_cmd (edit);
|
||
break;
|
||
case CK_XPaste:
|
||
edit_paste_from_X_buf_cmd (edit);
|
||
break;
|
||
case CK_Selection_History:
|
||
edit_paste_from_history (edit);
|
||
break;
|
||
|
||
case CK_Save_As:
|
||
#ifndef MIDNIGHT
|
||
/* if (COptionsOf (edit->widget) & EDITOR_NO_FILE) */
|
||
if (edit->widget->options & EDITOR_NO_FILE)
|
||
break;
|
||
#endif
|
||
edit_save_as_cmd (edit);
|
||
break;
|
||
case CK_Save:
|
||
#ifndef MIDNIGHT
|
||
if (COptionsOf (edit->widget) & EDITOR_NO_FILE)
|
||
break;
|
||
#endif
|
||
edit_save_confirm_cmd (edit);
|
||
break;
|
||
case CK_Load:
|
||
#ifndef MIDNIGHT
|
||
if (COptionsOf (edit->widget) & EDITOR_NO_FILE)
|
||
break;
|
||
#endif
|
||
edit_load_cmd (edit);
|
||
break;
|
||
case CK_Save_Block:
|
||
edit_save_block_cmd (edit);
|
||
break;
|
||
case CK_Insert_File:
|
||
edit_insert_file_cmd (edit);
|
||
break;
|
||
|
||
case CK_Find:
|
||
edit_search_cmd (edit, 0);
|
||
break;
|
||
case CK_Find_Again:
|
||
edit_search_cmd (edit, 1);
|
||
break;
|
||
case CK_Replace:
|
||
edit_replace_cmd (edit, 0);
|
||
break;
|
||
case CK_Replace_Again:
|
||
edit_replace_cmd (edit, 1);
|
||
break;
|
||
|
||
case CK_Exit:
|
||
edit_quit_cmd (edit);
|
||
break;
|
||
case CK_New:
|
||
edit_new_cmd (edit);
|
||
break;
|
||
|
||
case CK_Help:
|
||
edit_help_cmd (edit);
|
||
break;
|
||
|
||
case CK_Refresh:
|
||
edit_refresh_cmd (edit);
|
||
break;
|
||
|
||
case CK_Date:{
|
||
time_t t;
|
||
time (&t);
|
||
edit_printf (edit, ctime (&t));
|
||
edit->force |= REDRAW_PAGE;
|
||
break;
|
||
}
|
||
case CK_Goto:
|
||
edit_goto_cmd (edit);
|
||
break;
|
||
case CK_Paragraph_Format:
|
||
format_paragraph (edit, 1);
|
||
edit->force |= REDRAW_PAGE;
|
||
break;
|
||
case CK_Delete_Macro:
|
||
edit_delete_macro_cmd (edit);
|
||
break;
|
||
#ifdef MIDNIGHT
|
||
case CK_Sort:
|
||
edit_sort_cmd (edit);
|
||
break;
|
||
case CK_Mail:
|
||
edit_mail_dialog (edit);
|
||
break;
|
||
#endif
|
||
|
||
/* These commands are not handled and must be handled by the user application */
|
||
#ifndef MIDNIGHT
|
||
case CK_Sort:
|
||
case CK_Mail:
|
||
#endif
|
||
case CK_Complete:
|
||
case CK_Cancel:
|
||
case CK_Save_Desktop:
|
||
case CK_New_Window:
|
||
case CK_Cycle:
|
||
case CK_Save_And_Quit:
|
||
case CK_Check_Save_And_Quit:
|
||
case CK_Run_Another:
|
||
result = 0;
|
||
break;
|
||
case CK_Menu:
|
||
#ifdef GTK
|
||
if (edit->widget->menubar)
|
||
gtk_menu_popup (GTK_MENU(
|
||
(GTK_MENU_ITEM (g_list_nth_data (GTK_MENU_BAR (edit->widget->menubar)->menu_shell.children, 0)))->submenu
|
||
), 0, 0, 0, 0, 1, 0);
|
||
result = 1;
|
||
#else
|
||
result = 0;
|
||
#endif
|
||
break;
|
||
}
|
||
|
||
#ifdef MIDNIGHT
|
||
/* CK_Pipe_Block */
|
||
if ((command / 1000) == 1) /* a shell command */
|
||
edit_block_process_cmd (edit, shell_cmd[command - 1000], 1);
|
||
#else
|
||
if ((command / 1000) == 1) /* a user defined command */
|
||
if (user_commamd)
|
||
(*user_commamd) (edit, command - 1000);
|
||
#endif
|
||
|
||
if (command > CK_Macro (0) && command <= CK_Last_Macro) { /* a macro command */
|
||
struct macro m[MAX_MACRO_LENGTH];
|
||
int nm;
|
||
if ((result = edit_load_macro_cmd (edit, m, &nm, command - 2000)))
|
||
edit_execute_macro (edit, m, nm);
|
||
}
|
||
/* keys which must set the col position, and the search vars */
|
||
switch (command) {
|
||
case CK_Find:
|
||
case CK_Find_Again:
|
||
case CK_Replace:
|
||
case CK_Replace_Again:
|
||
edit->prev_col = edit_get_col (edit);
|
||
return 1;
|
||
break;
|
||
case CK_Up:
|
||
case CK_Up_Highlight:
|
||
case CK_Down:
|
||
case CK_Down_Highlight:
|
||
case CK_Page_Up:
|
||
case CK_Page_Up_Highlight:
|
||
case CK_Page_Down:
|
||
case CK_Page_Down_Highlight:
|
||
case CK_Beginning_Of_Text:
|
||
case CK_Beginning_Of_Text_Highlight:
|
||
case CK_End_Of_Text:
|
||
case CK_End_Of_Text_Highlight:
|
||
case CK_Paragraph_Up:
|
||
case CK_Paragraph_Up_Highlight:
|
||
case CK_Paragraph_Down:
|
||
case CK_Paragraph_Down_Highlight:
|
||
case CK_Scroll_Up:
|
||
case CK_Scroll_Up_Highlight:
|
||
case CK_Scroll_Down:
|
||
case CK_Scroll_Down_Highlight:
|
||
edit->search_start = edit->curs1;
|
||
edit->found_len = 0;
|
||
edit_find_bracket (edit);
|
||
return 1;
|
||
break;
|
||
default:
|
||
edit->found_len = 0;
|
||
edit->prev_col = edit_get_col (edit);
|
||
edit->search_start = edit->curs1;
|
||
}
|
||
edit_find_bracket (edit);
|
||
|
||
if (option_auto_para_formatting) {
|
||
switch (command) {
|
||
case CK_BackSpace:
|
||
case CK_Delete:
|
||
case CK_Delete_Word_Left:
|
||
case CK_Delete_Word_Right:
|
||
case CK_Delete_To_Line_End:
|
||
case CK_Delete_To_Line_Begin:
|
||
format_paragraph (edit, 0);
|
||
edit->force |= REDRAW_PAGE;
|
||
}
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
/* either command or char_for_insertion must be passed as -1 */
|
||
/* returns 0 if command is a macro that was not found, 1 otherwise */
|
||
int edit_execute_command (WEdit * edit, int command, int char_for_insertion)
|
||
{
|
||
int r;
|
||
r = edit_execute_cmd (edit, command, char_for_insertion);
|
||
edit_update_screen (edit);
|
||
return r;
|
||
}
|
||
|
||
void edit_execute_macro (WEdit * edit, struct macro macro[], int n)
|
||
{
|
||
int i = 0;
|
||
edit->force |= REDRAW_PAGE;
|
||
for (; i < n; i++) {
|
||
edit_execute_cmd (edit, macro[i].command, macro[i].ch);
|
||
}
|
||
edit_update_screen (edit);
|
||
}
|
||
|