diff options
Diffstat (limited to 'payloads/libpayload/curses/PDCurses-3.4/pdcurses/initscr.c')
| -rw-r--r-- | payloads/libpayload/curses/PDCurses-3.4/pdcurses/initscr.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/payloads/libpayload/curses/PDCurses-3.4/pdcurses/initscr.c b/payloads/libpayload/curses/PDCurses-3.4/pdcurses/initscr.c new file mode 100644 index 0000000000..d80fa0cf4e --- /dev/null +++ b/payloads/libpayload/curses/PDCurses-3.4/pdcurses/initscr.c @@ -0,0 +1,339 @@ +/* Public Domain Curses */ + +#include <curspriv.h> + +RCSID("$Id: initscr.c,v 1.114 2008/07/13 16:08:18 wmcbrine Exp $") + +/*man-start************************************************************** + + Name: initscr + + Synopsis: + WINDOW *initscr(void); + WINDOW *Xinitscr(int argc, char *argv[]); + int endwin(void); + bool isendwin(void); + SCREEN *newterm(const char *type, FILE *outfd, FILE *infd); + SCREEN *set_term(SCREEN *new); + void delscreen(SCREEN *sp); + + int resize_term(int nlines, int ncols); + bool is_termresized(void); + const char *curses_version(void); + + Description: + initscr() should be the first curses routine called. It will + initialize all curses data structures, and arrange that the + first call to refresh() will clear the screen. In case of + error, initscr() will write a message to standard error and end + the program. + + endwin() should be called before exiting or escaping from curses + mode temporarily. It will restore tty modes, move the cursor to + the lower left corner of the screen and reset the terminal into + the proper non-visual mode. To resume curses after a temporary + escape, call refresh() or doupdate(). + + isendwin() returns TRUE if endwin() has been called without a + subsequent refresh, unless SP is NULL. + + In some implementations of curses, newterm() allows the use of + multiple terminals. Here, it's just an alternative interface for + initscr(). It always returns SP, or NULL. + + delscreen() frees the memory allocated by newterm() or + initscr(), since it's not freed by endwin(). This function is + usually not needed. In PDCurses, the parameter must be the + value of SP, and delscreen() sets SP to NULL. + + set_term() does nothing meaningful in PDCurses, but is included + for compatibility with other curses implementations. + + resize_term() is effectively two functions: When called with + nonzero values for nlines and ncols, it attempts to resize the + screen to the given size. When called with (0, 0), it merely + adjusts the internal structures to match the current size after + the screen is resized by the user. On the currently supported + platforms, this functionality is mutually exclusive: X11 allows + user resizing, while DOS, OS/2 and Win32 allow programmatic + resizing. If you want to support user resizing, you should check + for getch() returning KEY_RESIZE, and/or call is_termresized() + at appropriate times; if either condition occurs, call + resize_term(0, 0). Then, with either user or programmatic + resizing, you'll have to resize any windows you've created, as + appropriate; resize_term() only handles stdscr and curscr. + + is_termresized() returns TRUE if the curses screen has been + resized by the user, and a call to resize_term() is needed. + Checking for KEY_RESIZE is generally preferable, unless you're + not handling the keyboard. + + curses_version() returns a string describing the version of + PDCurses. + + Return Value: + All functions return NULL on error, except endwin(), which + returns ERR on error. + + Portability X/Open BSD SYS V + initscr Y Y Y + endwin Y Y Y + isendwin Y - 3.0 + newterm Y - Y + set_term Y - Y + delscreen Y - 4.0 + resize_term - - - + is_termresized - - - + curses_version - - - + +**man-end****************************************************************/ + +#include <stdlib.h> + +char ttytype[128]; + +const char *_curses_notice = "PDCurses 3.4 - Public Domain 2008"; + +SCREEN *SP = (SCREEN*)NULL; /* curses variables */ +WINDOW *curscr = (WINDOW *)NULL; /* the current screen image */ +WINDOW *stdscr = (WINDOW *)NULL; /* the default screen window */ +WINDOW *pdc_lastscr = (WINDOW *)NULL; /* the last screen image */ + +int LINES = 0; /* current terminal height */ +int COLS = 0; /* current terminal width */ +int TABSIZE = 8; + +MOUSE_STATUS Mouse_status, pdc_mouse_status; + +extern RIPPEDOFFLINE linesripped[5]; +extern char linesrippedoff; + +WINDOW *Xinitscr(int argc, char *argv[]) +{ + int i; + + PDC_LOG(("Xinitscr() - called\n")); + + if (SP && SP->alive) + return NULL; + + if (PDC_scr_open(argc, argv) == ERR) + { + fprintf(stderr, "initscr(): Unable to create SP\n"); + exit(8); + } + + SP->autocr = TRUE; /* cr -> lf by default */ + SP->raw_out = FALSE; /* tty I/O modes */ + SP->raw_inp = FALSE; /* tty I/O modes */ + SP->cbreak = TRUE; + SP->save_key_modifiers = FALSE; + SP->return_key_modifiers = FALSE; + SP->echo = TRUE; + SP->visibility = 1; + SP->resized = FALSE; + SP->_trap_mbe = 0L; + SP->_map_mbe_to_key = 0L; + SP->linesrippedoff = 0; + SP->linesrippedoffontop = 0; + SP->delaytenths = 0; + SP->line_color = -1; + + SP->orig_cursor = PDC_get_cursor_mode(); + + LINES = SP->lines; + COLS = SP->cols; + + if (LINES < 2 || COLS < 2) + { + fprintf(stderr, "initscr(): LINES=%d COLS=%d: too small.\n", + LINES, COLS); + exit(4); + } + + if ((curscr = newwin(LINES, COLS, 0, 0)) == (WINDOW *)NULL) + { + fprintf(stderr, "initscr(): Unable to create curscr.\n"); + exit(2); + } + + if ((pdc_lastscr = newwin(LINES, COLS, 0, 0)) == (WINDOW *)NULL) + { + fprintf(stderr, "initscr(): Unable to create pdc_lastscr.\n"); + exit(2); + } + + wattrset(pdc_lastscr, (chtype)(-1)); + werase(pdc_lastscr); + + PDC_slk_initialize(); + LINES -= SP->slklines; + + /* We have to sort out ripped off lines here, and reduce the height + of stdscr by the number of lines ripped off */ + + for (i = 0; i < linesrippedoff; i++) + { + if (linesripped[i].line < 0) + (*linesripped[i].init)(newwin(1, COLS, LINES - 1, 0), COLS); + else + (*linesripped[i].init)(newwin(1, COLS, + SP->linesrippedoffontop++, 0), COLS); + + SP->linesrippedoff++; + LINES--; + } + + linesrippedoff = 0; + + if (!(stdscr = newwin(LINES, COLS, SP->linesrippedoffontop, 0))) + { + fprintf(stderr, "initscr(): Unable to create stdscr.\n"); + exit(1); + } + + wclrtobot(stdscr); + + /* If preserving the existing screen, don't allow a screen clear */ + + if (SP->_preserve) + { + untouchwin(curscr); + untouchwin(stdscr); + stdscr->_clear = FALSE; + curscr->_clear = FALSE; + } + else + curscr->_clear = TRUE; + + PDC_init_atrtab(); /* set up default colors */ + + MOUSE_X_POS = MOUSE_Y_POS = -1; + BUTTON_STATUS(1) = BUTTON_RELEASED; + BUTTON_STATUS(2) = BUTTON_RELEASED; + BUTTON_STATUS(3) = BUTTON_RELEASED; + Mouse_status.changes = 0; + + SP->alive = TRUE; + + def_shell_mode(); + + sprintf(ttytype, "pdcurses|PDCurses for %s", PDC_sysname()); + + return stdscr; +} + +WINDOW *initscr(void) +{ + PDC_LOG(("initscr() - called\n")); + + return Xinitscr(0, NULL); +} + +int endwin(void) +{ + PDC_LOG(("endwin() - called\n")); + + /* Allow temporary exit from curses using endwin() */ + + def_prog_mode(); + PDC_scr_close(); + + SP->alive = FALSE; + + return OK; +} + +bool isendwin(void) +{ + PDC_LOG(("isendwin() - called\n")); + + return SP ? !(SP->alive) : FALSE; +} + +SCREEN *newterm(const char *type, FILE *outfd, FILE *infd) +{ + PDC_LOG(("newterm() - called\n")); + + return Xinitscr(0, NULL) ? SP : NULL; +} + +SCREEN *set_term(SCREEN *new) +{ + PDC_LOG(("set_term() - called\n")); + + /* We only support one screen */ + + return (new == SP) ? SP : NULL; +} + +void delscreen(SCREEN *sp) +{ + PDC_LOG(("delscreen() - called\n")); + + if (sp != SP) + return; + + PDC_slk_free(); /* free the soft label keys, if needed */ + + delwin(stdscr); + delwin(curscr); + delwin(pdc_lastscr); + stdscr = (WINDOW *)NULL; + curscr = (WINDOW *)NULL; + pdc_lastscr = (WINDOW *)NULL; + + SP->alive = FALSE; + + PDC_scr_free(); /* free SP and pdc_atrtab */ + + SP = (SCREEN *)NULL; +} + +int resize_term(int nlines, int ncols) +{ + PDC_LOG(("resize_term() - called: nlines %d\n", nlines)); + + if (!stdscr || PDC_resize_screen(nlines, ncols) == ERR) + return ERR; + + SP->lines = PDC_get_rows(); + LINES = SP->lines - SP->linesrippedoff - SP->slklines; + SP->cols = COLS = PDC_get_columns(); + + if (wresize(curscr, SP->lines, SP->cols) == ERR || + wresize(stdscr, LINES, COLS) == ERR || + wresize(pdc_lastscr, SP->lines, SP->cols) == ERR) + return ERR; + + werase(pdc_lastscr); + curscr->_clear = TRUE; + + if (SP->slk_winptr) + { + if (wresize(SP->slk_winptr, SP->slklines, COLS) == ERR) + return ERR; + + wmove(SP->slk_winptr, 0, 0); + wclrtobot(SP->slk_winptr); + PDC_slk_initialize(); + slk_noutrefresh(); + } + + touchwin(stdscr); + wnoutrefresh(stdscr); + + return OK; +} + +bool is_termresized(void) +{ + PDC_LOG(("is_termresized() - called\n")); + + return SP->resized; +} + +const char *curses_version(void) +{ + return _curses_notice; +} |