path: root/src/nvim/ex_cmds2.c

// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com

/// @file ex_cmds2.c
///
/// Some more functions for command line commands

#include <assert.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>

#include "nvim/arglist.h"
#include "nvim/ascii.h"
#include "nvim/autocmd.h"
#include "nvim/globals.h"
#include "nvim/vim.h"
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
#include "nvim/buffer.h"
#include "nvim/change.h"
#include "nvim/charset.h"
#include "nvim/eval.h"
#include "nvim/eval/vars.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_cmds2.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/ex_getln.h"
#include "nvim/fileio.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/move.h"
#include "nvim/normal.h"
#include "nvim/ops.h"
#include "nvim/option.h"
#include "nvim/os/fs_defs.h"
#include "nvim/os/shell.h"
#include "nvim/os_unix.h"
#include "nvim/path.h"
#include "nvim/quickfix.h"
#include "nvim/runtime.h"
#include "nvim/strings.h"
#include "nvim/undo.h"
#include "nvim/window.h"

#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ex_cmds2.c.generated.h"
#endif

void ex_ruby(exarg_T *eap)
{
  script_host_execute("ruby", eap);
}

void ex_rubyfile(exarg_T *eap)
{
  script_host_execute_file("ruby", eap);
}

void ex_rubydo(exarg_T *eap)
{
  script_host_do_range("ruby", eap);
}

void ex_python3(exarg_T *eap)
{
  script_host_execute("python3", eap);
}

void ex_py3file(exarg_T *eap)
{
  script_host_execute_file("python3", eap);
}

void ex_pydo3(exarg_T *eap)
{
  script_host_do_range("python3", eap);
}

void ex_perl(exarg_T *eap)
{
  script_host_execute("perl", eap);
}

void ex_perlfile(exarg_T *eap)
{
  script_host_execute_file("perl", eap);
}

void ex_perldo(exarg_T *eap)
{
  script_host_do_range("perl", eap);
}

/// 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
      // never autowrite a "nofile" or "nowrite" buffer
      || bt_dontwrite(buf)
      || (!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)
{
  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.
bool 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 ((p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) && p_write) {
      int count = 0;

      if (flags & CCGD_ALLBUF) {
        FOR_ALL_BUFFERS(buf2) {
          if (bufIsChanged(buf2) && (buf2->b_ffname != NULL)) {
            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);
    }
    if (flags & CCGD_EXCMD) {
      no_write_message();
    } else {
      no_write_message_nobang(curbuf);
    }
    return true;
  }
  return false;
}

/// Ask the user what to do when abandoning a changed buffer.
/// Must check 'write' option first!
///
/// @param buf
/// @param checkall may abandon all changed buffers
void dialog_changed(buf_T *buf, bool checkall)
{
  char buff[DIALOG_MSG_SIZE];
  int ret;
  // Init ea pseudo-structure, this is needed for the check_overwrite()
  // function.
  exarg_T ea = {
    .append = false,
    .forceit = false,
  };

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