diff options
Diffstat (limited to 'ncurses-5.2/ncurses/base/lib_screen.c')
| -rw-r--r-- | ncurses-5.2/ncurses/base/lib_screen.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/ncurses-5.2/ncurses/base/lib_screen.c b/ncurses-5.2/ncurses/base/lib_screen.c new file mode 100644 index 0000000..d346d63 --- /dev/null +++ b/ncurses-5.2/ncurses/base/lib_screen.c @@ -0,0 +1,198 @@ +/**************************************************************************** + * Copyright (c) 1998 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + + +#include <curses.priv.h> + +#include <sys/stat.h> +#include <time.h> +#include <term.h> /* exit_ca_mode, non_rev_rmcup */ + +MODULE_ID("$Id$") + +static time_t dumptime; + +WINDOW *getwin(FILE *filep) +{ + WINDOW tmp, *nwin; + int n; + + T((T_CALLED("getwin(%p)"), filep)); + + (void) fread(&tmp, sizeof(WINDOW), 1, filep); + if (ferror(filep)) + returnWin(0); + + if ((nwin = newwin(tmp._maxy+1, tmp._maxx+1, 0, 0)) == 0) + returnWin(0); + + /* + * We deliberately do not restore the _parx, _pary, or _parent + * fields, because the window hierarchy within which they + * made sense is probably gone. + */ + nwin->_curx = tmp._curx; + nwin->_cury = tmp._cury; + nwin->_maxy = tmp._maxy; + nwin->_maxx = tmp._maxx; + nwin->_begy = tmp._begy; + nwin->_begx = tmp._begx; + nwin->_yoffset = tmp._yoffset; + nwin->_flags = tmp._flags & ~(_SUBWIN|_ISPAD); + + nwin->_attrs = tmp._attrs; + nwin->_bkgd = tmp._bkgd; + + nwin->_clear = tmp._clear; + nwin->_scroll = tmp._scroll; + nwin->_leaveok = tmp._leaveok; + nwin->_use_keypad = tmp._use_keypad; + nwin->_delay = tmp._delay; + nwin->_immed = tmp._immed; + nwin->_sync = tmp._sync; + + nwin->_regtop = tmp._regtop; + nwin->_regbottom = tmp._regbottom; + + for (n = 0; n < nwin->_maxy + 1; n++) + { + (void) fread(nwin->_line[n].text, + sizeof(chtype), (size_t)(nwin->_maxx + 1), filep); + if (ferror(filep)) + { + delwin(nwin); + returnWin(0); + } + } + touchwin(nwin); + + returnWin(nwin); +} + +int putwin(WINDOW *win, FILE *filep) +{ + int code = ERR; + int n; + + T((T_CALLED("putwin(%p,%p)"), win, filep)); + + if (win) { + (void) fwrite(win, sizeof(WINDOW), 1, filep); + if (ferror(filep)) + returnCode(code); + + for (n = 0; n < win->_maxy + 1; n++) + { + (void) fwrite(win->_line[n].text, + sizeof(chtype), (size_t)(win->_maxx + 1), filep); + if (ferror(filep)) + returnCode(code); + } + code = OK; + } + returnCode(code); +} + +int scr_restore(const char *file) +{ + FILE *fp = 0; + + T((T_CALLED("scr_restore(%s)"), _nc_visbuf(file))); + + if (_nc_access(file, R_OK) < 0 + || (fp = fopen(file, "rb")) == 0) + returnCode(ERR); + else + { + delwin(newscr); + newscr = getwin(fp); + (void) fclose(fp); + returnCode(OK); + } +} + +int scr_dump(const char *file) +{ + FILE *fp = 0; + + T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file))); + + if (_nc_access(file, W_OK) < 0 + || (fp = fopen(file, "wb")) == 0) + returnCode(ERR); + else + { + (void) putwin(newscr, fp); + (void) fclose(fp); + dumptime = time((time_t *)0); + returnCode(OK); + } +} + +int scr_init(const char *file) +{ + FILE *fp = 0; + struct stat stb; + + T((T_CALLED("scr_init(%s)"), _nc_visbuf(file))); + + if (exit_ca_mode && non_rev_rmcup) + returnCode(ERR); + + if (_nc_access(file, R_OK) < 0 + || (fp = fopen(file, "rb")) == 0) + returnCode(ERR); + else if (fstat(STDOUT_FILENO, &stb) || stb.st_mtime > dumptime) + returnCode(ERR); + else + { + delwin(curscr); + curscr = getwin(fp); + (void) fclose(fp); + returnCode(OK); + } +} + +int scr_set(const char *file) +{ + T((T_CALLED("scr_set(%s)"), _nc_visbuf(file))); + + if (scr_init(file) == ERR) + returnCode(ERR); + else + { + delwin(newscr); + newscr = dupwin(curscr); + returnCode(OK); + } +} |