path: root/src/ex_cmds2.c

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * ex_cmds2.c: some more functions for command line commands
 */

#include "vim.h"
#include "version.h"

/*
 * If 'autowrite' option set, try to write the file.
 * Careful: autocommands may make "buf" invalid!
 *
 * return FAIL for failure, OK otherwise
 */
    int
autowrite(buf_T *buf, int forceit)
{
    int		r;
    bufref_T	bufref;

    if (!(p_aw || p_awa) || !p_write
#ifdef FEAT_QUICKFIX
	    // never autowrite a "nofile" or "nowrite" buffer
	    || bt_dontwrite(buf)
#endif
	    || (!forceit && buf->b_p_ro) || buf->b_ffname == NULL)
	return FAIL;
    set_bufref(&bufref, buf);
    r = buf_write_all(buf, forceit);

    // Writing may succeed but the buffer still changed, e.g., when there is a
    // conversion error.  We do want to return FAIL then.
    if (bufref_valid(&bufref) && bufIsChanged(buf))
	r = FAIL;
    return r;
}

/*
 * Flush all buffers, except the ones that are readonly or are never written.
 */
    void
autowrite_all(void)
{
    buf_T	*buf;

    if (!(p_aw || p_awa) || !p_write)
	return;
    FOR_ALL_BUFFERS(buf)
	if (bufIsChanged(buf) && !buf->b_p_ro && !bt_dontwrite(buf))
	{
	    bufref_T	bufref;

	    set_bufref(&bufref, buf);

	    (void)buf_write_all(buf, FALSE);

	    // an autocommand may have deleted the buffer
	    if (!bufref_valid(&bufref))
		buf = firstbuf;
	}
}

/*
 * Return TRUE if buffer was changed and cannot be abandoned.
 * For flags use the CCGD_ values.
 */
    int
check_changed(buf_T *buf, int flags)
{
    int		forceit = (flags & CCGD_FORCEIT);
    bufref_T	bufref;

    set_bufref(&bufref, buf);

    if (       !forceit
	    && bufIsChanged(buf)
	    && ((flags & CCGD_MULTWIN) || buf->b_nwindows <= 1)
	    && (!(flags & CCGD_AW) || autowrite(buf, forceit) == FAIL))
    {
#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
	if ((p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) && p_write)
	{
	    buf_T	*buf2;
	    int		count = 0;

	    if (flags & CCGD_ALLBUF)
		FOR_ALL_BUFFERS(buf2)
		    if (bufIsChanged(buf2)
				     && (buf2->b_ffname != NULL
# ifdef FEAT_BROWSE
					 || (cmdmod.cmod_flags & CMOD_BROWSE)
# endif
					))
			++count;
	    if (!bufref_valid(&bufref))
		// Autocommand deleted buffer, oops!  It's not changed now.
		return FALSE;

	    dialog_changed(buf, count > 1);

	    if (!bufref_valid(&bufref))
		// Autocommand deleted buffer, oops!  It's not changed now.
		return FALSE;
	    return bufIsChanged(buf);
	}
#endif
	if (flags & CCGD_EXCMD)
	    no_write_message();
	else
	    no_write_message_nobang(curbuf);
	return TRUE;
    }
    return FALSE;
}

#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)

#if defined(FEAT_BROWSE) || defined(PROTO)
/*
 * When wanting to write a file without a file name, ask the user for a name.
 */
    void
browse_save_fname(buf_T *buf)
{
    if (buf->b_fname == NULL)
    {
	char_u *fname;

	fname = do_browse(BROWSE_SAVE, (char_u *)_("Save As"),
						 NULL, NULL, NULL, NULL, buf);
	if (fname != NULL)
	{
	    if (setfname(buf, fname, NULL, TRUE) == OK)
		buf->b_flags |= BF_NOTEDITED;
	    vim_free(fname);
	}
    }
}
#endif

/*
 * Ask the user what to do when abandoning a changed buffer.
 * Must check 'write' option first!
 */
    void
dialog_changed(
    buf_T	*buf,
    int		checkall)	// may abandon all changed buffers
{
    char_u	buff[DIALOG_MSG_SIZE];
    int		ret;
    buf_T	*buf2;
    exarg_T     ea;

    dialog_msg(buff, _("Save changes to \"%s\"?"), buf->b_fname);
    if (checkall)
	ret = vim_dialog_yesnoallcancel(VIM_QUESTION, NULL, buff, 1);
    else
	ret = vim_dialog_yesnocancel(VIM_QUESTION, NULL, buff, 1);

    // Init ea pseudo-structure, this is needed for the check_overwrite()
    // function.
    CLEAR_FIELD(ea);

    if (ret == VIM_YES)
    {
#ifdef FEAT_BROWSE
	// May get file name, when there is none
	browse_save_fname</