#include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef VMS #include #endif #if defined(VMS) && defined(__GNUC__) #include #undef LINES #undef COLS #define LINES lines #define COLS cols extern int _NOSHARE(LINES); extern int _NOSHARE(COLS); #endif /* VMS && __GNUC__ */ #ifdef USE_COLOR_STYLE #include #include #endif #if defined(COLOR_CURSES) int lynx_has_color = FALSE; #endif #if defined(USE_COLOR_STYLE) && !USE_COLOR_TABLE #define COLOR_BKGD ((s_normal != NOSTYLE) ? hashStyles[s_normal].color : A_NORMAL) #else #define COLOR_BKGD ((COLOR_PAIRS >= 9) ? COLOR_PAIR(9) : A_NORMAL) #endif /* * These are routines to start and stop curses and to cleanup * the screen at the end. */ PRIVATE int dumbterm PARAMS((char *terminal)); BOOLEAN LYCursesON = FALSE; #if USE_COLOR_TABLE || defined(USE_SLANG) PRIVATE int Current_Attr; PRIVATE int Masked_Attr; #endif #define OMIT_SCN_KEEPING 0 /* whether to omit keeping of Style_className in HTML.c when lss support is on. 1 to increase performance. The value must correspond to the value of macro OMIT_SCN_KEEPING defined in HTML.c*/ #ifdef USE_SLANG PUBLIC unsigned int Lynx_Color_Flags = 0; PUBLIC BOOLEAN FullRefresh = FALSE; PUBLIC int curscr = 0; #ifdef SLANG_MBCS_HACK /* * Will be set by size_change. - KW */ PUBLIC int PHYSICAL_SLtt_Screen_Cols = 10; #endif /* SLANG_MBCS_HACK */ PUBLIC void LY_SLrefresh NOARGS { if (FullRefresh) { SLsmg_suspend_smg(); SLsmg_resume_smg(); FullRefresh = FALSE; } else { SLsmg_refresh(); } return; } /* the following renamed from LY_SLclear since it is more like erase() described in curses man pages than like clear(); but for USE_SLANG clear() is still a macro calling this, and will do the same thing as erase(). - kw */ PUBLIC void LY_SLerase NOARGS { SLsmg_gotorc (0, 0); SLsmg_erase_eos (); } #ifdef VMS PUBLIC void VTHome NOARGS { printf("\033[;H"); return; } #endif /* VMS */ PUBLIC void LYaddAttr ARGS1( int, a) { Current_Attr |= a; SLsmg_set_color(Current_Attr & ~Masked_Attr); } PUBLIC void LYsubAttr ARGS1( int, a) { Current_Attr &= ~a; SLsmg_set_color(Current_Attr & ~Masked_Attr); } PRIVATE void lynx_setup_attrs NOARGS { static int monoattr[] = { 0, SLTT_BOLD_MASK, SLTT_REV_MASK, SLTT_REV_MASK | SLTT_BOLD_MASK, SLTT_ULINE_MASK, SLTT_ULINE_MASK | SLTT_BOLD_MASK, SLTT_ULINE_MASK | SLTT_REV_MASK, SLTT_ULINE_MASK | SLTT_BOLD_MASK | SLTT_REV_MASK }; int n; for (n = 1; n <= 7; n++) SLtt_set_mono(n, NULL, (monoattr[n] & ~Masked_Attr)); } PUBLIC void lynx_setup_colors NOARGS { CTRACE((tfp, "lynx_setup_colors\n")); SLtt_set_color(0, NULL, DEFAULT_FG, DEFAULT_BG); SLtt_set_color(1, NULL, "blue", DEFAULT_BG); /* bold */ SLtt_set_color(2, NULL, "yellow", "blue"); /* reverse */ SLtt_set_color(4, NULL, "magenta", DEFAULT_BG); /* underline */ /* * The other objects are '|'ed together to get rest. */ SLtt_set_color(3, NULL, "green", DEFAULT_BG); /* bold-reverse */ SLtt_set_color(5, NULL, "blue", DEFAULT_BG); /* bold-underline */ SLtt_set_color(6, NULL, "red", DEFAULT_BG); /* reverse-underline */ SLtt_set_color(7, NULL, "magenta", "cyan"); /* reverse-underline-bold */ /* * Now set monochrome attributes. */ lynx_setup_attrs(); } PRIVATE void sl_suspend ARGS1( int, sig) { #ifdef SIGSTOP #ifndef VMS int r, c; lynx_enable_mouse (0); if (sig == SIGTSTP) SLsmg_suspend_smg(); SLang_reset_tty(); kill(getpid(),SIGSTOP); #if SLANG_VERSION > 9929 SLang_init_tty(-1, 0, 1); #else SLang_init_tty(3, 0, 1); #endif /* SLANG_VERSION > 9929 */ signal(SIGTSTP, sl_suspend); #if defined(UNIX) && !defined(__CYGWIN__) SLtty_set_suspend_state(1); #endif if (sig == SIGTSTP) SLsmg_resume_smg(); /* * Get new window size in case it changed. */ r = SLtt_Screen_Rows; c = SLtt_Screen_Cols; size_change(0); if ((r != SLtt_Screen_Rows) || (c != SLtt_Screen_Cols)) { recent_sizechange = TRUE; } lynx_enable_mouse (1); #endif /* !VMS */ #endif /* SIGSTOP */ return; } #else /* Not slang: */ #ifdef VMS /* ** This function boxes windows with graphic characters for ** VMS curses. Pass it the window, it's height, and it's ** width. - FM */ PUBLIC void VMSbox ARGS3( WINDOW *, win, int, height, int, width) { int i; wmove(win, 0, 0); waddstr(win, "\033)0\016l"); for (i = 1; i < width; i++) waddch(win, 'q'); waddch(win, 'k'); for (i = 1; i < height-1; i++) { wmove(win, i, 0); waddch(win, 'x'); wmove(win, i, width-1); waddch(win, 'x'); } wmove(win, i, 0); waddch(win, 'm'); for (i = 1; i < width; i++) waddch(win, 'q'); waddstr(win, "j\017"); } #else /* ** This function boxes windows for non-VMS (n)curses. ** Pass it the window. - FM */ PUBLIC void LYbox ARGS2( WINDOW *, win, BOOLEAN, formfield GCC_UNUSED) { /* * If the terminal is in UTF-8 mode, it probably cannot understand * box drawing characters as (n)curses handles them. (This may also * be true for other display character sets, but isn't currently * checked.) In that case, substitute ASCII characters for BOXVERT * and BOXHORI if they were defined to 0 for automatic use of box * drawing characters. They'll stay as they are otherwise. - KW & FM */ int boxvert, boxhori; UCSetBoxChars(current_char_set, &boxvert, &boxhori, BOXVERT, BOXHORI); #ifdef CSS if (formfield) wcurses_css(win, "frame", ABS_ON); #endif /* * If we don't have explicitly specified characters for either * vertical or horizontal lines, the characters that box() would * use for the corners probably also won't work well. So we * specify our own ASCII characters for the corners and call * wborder() instead of box(). - kw */ #ifdef HAVE_WBORDER if (!boxvert || !boxhori) box(win, boxvert, boxhori); else if (boxvert == '*' || boxhori == '*') wborder(win, boxvert, boxvert, boxhori, boxhori, '*', '*', '*', '*'); else wborder(win, boxvert, boxvert, boxhori, boxhori, '/', '\\', '\\', '/'); #else box(win, boxvert, boxhori); #endif #ifdef CSS if (formfield) wcurses_css(win, "frame", ABS_OFF); #endif } #endif /* VMS */ #endif /* USE_SLANG */ #if defined(USE_COLOR_STYLE) /* Ok, explanation of the USE_COLOR_STYLE styles. The basic styles (ie non * HTML) are set the same as the SLANG version for ease of programming. The * other styles are simply the HTML enum from HTMLDTD.h + 16. */ PUBLIC HTCharStyle displayStyles[DSTYLE_ELEMENTS]; /* * set a style's attributes - RP */ PUBLIC void setStyle ARGS4(int,style,int,color,int,cattr,int,mono) { displayStyles[style].color=color; displayStyles[style].cattr=cattr; displayStyles[style].mono=mono; } PUBLIC void setHashStyle ARGS5(int,style,int,color,int,cattr,int,mono,char*,element) { bucket* ds=&hashStyles[style]; CTRACE((tfp, "CSS(SET): <%s> hash=%d, ca=%d, ma=%d\n", element, style, color, mono)); ds->color=color; ds->cattr=cattr; ds->mono=mono; ds->code=style; FREE(ds->name); ds->name=malloc(sizeof(char)*(strlen(element)+2)); if(!ds->name) outofmem(__FILE__, "setHashStyle"); strcpy(ds->name, element); } /* * set the curses attributes to be color or mono - RP */ PRIVATE int LYAttrset ARGS3(WINDOW*,win,int,color,int,mono) { CTRACE((tfp, "CSS:LYAttrset (%#x, %#x)\n", color, mono)); if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON && color > -1) { wattrset(win,color); return color; } if (mono > -1) { wattrset(win,mono); return mono; } wattrset(win,A_NORMAL); return A_NORMAL; } PUBLIC void curses_w_style ARGS3( WINDOW*, win, int, style, int, dir) { #if OMIT_SCN_KEEPING # define SPECIAL_STYLE /*(CSHASHSIZE+1) */ 88888 /* if TRACEs are not compiled in, this macro is redundant - we neend't valid 'ds' to stack off. */ #endif int YP,XP; #if !OMIT_SCN_KEEPING bucket* ds= (style == NOSTYLE ? &nostyle_bucket : &hashStyles[style]); #else bucket* ds= (style == NOSTYLE ? &nostyle_bucket : (style== SPECIAL_STYLE ? &special_bucket :&hashStyles[style]) ); #endif if (!ds->name) { CTRACE((tfp, "CSS.CS:Style %d not configured\n",style)); #if !OMIT_SCN_KEEPING return; #endif } CTRACE((tfp, "CSS.CS:<%s%s> (%d)\n",(dir?"":"/"),ds->name,ds->code)); getyx (win, YP, XP); if (style == s_normal && dir) { wattrset(win,A_NORMAL); if (win==stdscr) cached_styles[YP][XP]=s_normal; return; } switch (dir) { /* ABS_OFF is the same as STACK_OFF for the moment */ case STACK_OFF: if (last_colorattr_ptr) { int last_attr = last_styles[--last_colorattr_ptr]; LYAttrset(win,last_attr,last_attr); } else LYAttrset(win,A_NORMAL,-1); return; case STACK_ON: /* remember the current attributes */ if (last_colorattr_ptr > 127) { CTRACE((tfp,"........... %s (0x%x) %s\r\n", "attribute cache FULL, dropping last", last_styles[last_colorattr_ptr], "in LynxChangeStyle(curses_w_style)")); last_colorattr_ptr--; } last_styles[last_colorattr_ptr++] = getattrs(stdscr); /* don't cache style changes for active links */ #if OMIT_SCN_KEEPING /* since we don't compute the hcode to stack off in HTML.c, we * don't know whether this style is configured. So, we * shouldn't simply return on stacking on on unconfigured * styles, we should push curr attrs on stack. -HV */ if (!ds->name) return; #endif if (style != s_alink) { CTRACE((tfp, "CACHED: <%s> @(%d,%d)\n", ds->name, YP, XP)); if (win==stdscr) cached_styles[YP][XP]=style; } LYAttrset(win, ds->color, ds->mono); return; case ABS_ON: /* change without remembering the previous style */ /* don't cache style changes for active links */ if (style != s_alink) { CTRACE((tfp, "CACHED: <%s> @(%d,%d)\n", ds->name, YP, XP)); if (win==stdscr) cached_styles[YP][XP]=style; } LYAttrset(win, ds->color, ds->mono); return; } } /* * wrapper function to set on-screen styles - RP */ PUBLIC void wcurses_css ARGS3(WINDOW *,win,char*,name,int,dir) { int try_again=1; while (try_again) { int tmpHash=hash_code(name); CTRACE((tfp, "CSSTRIM:trying to set [%s] style - ", name)); if (tmpHash==NOSTYLE) { char *class=strrchr(name, '.'); CTRACE((tfp, "undefined, trimming at %p\n", class)); if (class) *class='\0'; else try_again=0; } else { CTRACE((tfp, "ok (%d)\n", hash_code(name))); curses_w_style(win, hash_code(name), dir); try_again=0; } } } PUBLIC void curses_css ARGS2(char *,name,int,dir) { wcurses_css(stdscr, name, dir); } PUBLIC void curses_style ARGS2( int, style, int, dir) { curses_w_style(stdscr, style, dir); } #ifdef NOT_USED void attribute ARGS2(int,style,int,dir) { curses_style(style, dir, 0); } #endif #endif /* USE_COLOR_STYLE */ PRIVATE int lynx_called_initscr; #if HAVE_USE_DEFAULT_COLORS && USE_DEFAULT_COLORS /* * If we find a "default" color while reading the config-file, set default * colors on the screen. */ PUBLIC int lynx_default_colors NOARGS { int code = 0; if (lynx_called_initscr) { code = -1; if (use_default_colors() == OK) { default_fg = DEFAULT_COLOR; default_bg = DEFAULT_COLOR; code = 1; } } return code; } #endif /* HAVE_USE_DEFAULT_COLORS && USE_DEFAULT_COLORS */ #if USE_COLOR_TABLE && defined(COLOR_CURSES) /* * This block of code is designed to produce the same color effects using SVr4 * curses as the slang library's implementation in this module. That maps the * SGR codes into a 0-7 index into the color table, with special treatment for * backgrounds. There's a bit of convoluted (but necessary) code handling the * special case of initialization before 'initscr()' is called. * 1997/1/19 - T.E.Dickey */ PRIVATE struct { int fg, bg; chtype attr; } lynx_color_cfg[] = { /*0*/ { DEFAULT_FG, DEFAULT_BG, A_NORMAL}, /* A_NORMAL */ /*1*/ { COLOR_BLUE, DEFAULT_BG, A_NORMAL}, /* A_BOLD */ /*2*/ { COLOR_YELLOW, COLOR_BLUE, A_BOLD}, /* A_REVERSE */ /*3*/ { COLOR_GREEN, DEFAULT_BG, A_NORMAL}, /* A_REVERSE | A_BOLD */ /*4*/ { COLOR_MAGENTA, DEFAULT_BG, A_NORMAL}, /* A_UNDERLINE */ /*5*/ { COLOR_BLUE, DEFAULT_BG, A_NORMAL}, /* A_UNDERLINE | A_BOLD */ /*6*/ { COLOR_RED, DEFAULT_BG, A_NORMAL}, /* A_UNDERLINE | A_REVERSE */ /*7*/ { COLOR_MAGENTA, COLOR_CYAN, A_NORMAL} /* A_UNDERLINE | A_BOLD | A_REVERSE */ }; /* * Hold the codes for color-pairs here until 'initscr()' is called. */ PRIVATE struct { int fg; int bg; } lynx_color_pairs[25]; /* * Map the SGR attributes (0-7) into ANSI colors, modified with the actual BOLD * attribute we'll get 16 colors. */ PRIVATE void LYsetWAttr ARGS1(WINDOW *, win) { if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) { int code = 0; int attr = A_NORMAL; int offs = 1; static int NoColorVideo = -1; #if defined(UNIX) && !defined(PDCURSES) if (NoColorVideo < 0) { NoColorVideo = tigetnum("ncv"); } if (NoColorVideo < 0) NoColorVideo = 0; #endif /* UNIX */ if (Current_Attr & A_BOLD) code |= 1; if (Current_Attr & A_REVERSE) code |= 2; if (Current_Attr & A_UNDERLINE) code |= 4; attr = lynx_color_cfg[code].attr; if (code+offs < COLOR_PAIRS) { attr |= COLOR_PAIR(code+offs); } wattrset(win, attr & ~Masked_Attr); } else { wattrset(win, Current_Attr & ~Masked_Attr); } } PRIVATE void lynx_map_color ARGS1(int, n) { int m; CTRACE((tfp, "lynx_map_color(%d)\n", n)); lynx_color_pairs[n+1].fg = lynx_color_cfg[n].fg; lynx_color_pairs[n+1].bg = lynx_color_cfg[n].bg; lynx_color_pairs[n+9].fg = lynx_color_cfg[n].fg; lynx_color_pairs[n+9].bg = lynx_color_cfg[0].bg; lynx_color_pairs[n+17].fg = lynx_color_cfg[n].bg; lynx_color_pairs[n+17].bg = lynx_color_cfg[n].bg; if (lynx_called_initscr) { for (m = 0; m <= 16; m += 8) { int pair = n + m + 1; if (pair < COLOR_PAIRS) init_pair((short)pair, (short)lynx_color_pairs[pair].fg, (short)lynx_color_pairs[pair].bg); } if (n == 0 && LYShowColor >= SHOW_COLOR_ON) bkgd(COLOR_BKGD | ' '); } } PUBLIC int lynx_chg_color ARGS3( int, color, int, fg, int, bg ) { if (fg == ERR_COLOR || bg == ERR_COLOR) return -1; if (color >= 0 && color < 8) { lynx_color_cfg[color].fg = (fg > 7) ? (fg & 7) : fg; lynx_color_cfg[color].bg = (bg > 7) ? (bg & 7) : bg; lynx_color_cfg[color].attr = ((fg > 7) && (fg & 8)) ? A_BOLD : A_NORMAL; lynx_map_color(color); } else { return -1; } return 0; } PUBLIC void lynx_set_color ARGS1(int, a) { if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) { attrset(lynx_color_cfg[a].attr | (((a+1) < COLOR_PAIRS) ? COLOR_PAIR(a+1) : A_NORMAL)); } } PUBLIC void lynx_standout ARGS1(int, flag) { if (flag) LYaddAttr(A_REVERSE); else LYsubAttr(A_REVERSE); } PRIVATE void lynx_init_colors NOARGS { if (lynx_has_color) { size_t n, m; CTRACE((tfp, "lynx_init_colors\n")); lynx_color_cfg[0].fg = default_fg; lynx_color_cfg[0].bg = default_bg; for (n = 0; n < TABLESIZE(lynx_color_cfg); n++) { for (m = 0; m <= 16; m += 8) { int pair = n + m + 1; if (pair < COLOR_PAIRS) init_pair((short)pair, (short)lynx_color_pairs[pair].fg, (short)lynx_color_pairs[pair].bg); } if (n == 0 && LYShowColor >= SHOW_COLOR_ON) bkgd(COLOR_BKGD | ' '); } } else if (LYShowColor != SHOW_COLOR_NEVER) { LYShowColor = SHOW_COLOR_OFF; } } PUBLIC void lynx_setup_colors NOARGS { int n; CTRACE((tfp, "lynx_setup_colors\n")); for (n = 0; n < 8; n++) lynx_map_color(n); } #endif /* USE_COLOR_TABLE */ PUBLIC void LYnoVideo ARGS1( int, a) { CTRACE((tfp, "LYnoVideo(%d)\n", a)); #ifdef USE_SLANG if (a & 1) Masked_Attr |= SLTT_BOLD_MASK; if (a & 2) Masked_Attr |= SLTT_REV_MASK; if (a & 4) Masked_Attr |= SLTT_ULINE_MASK; lynx_setup_attrs(); #else #if USE_COLOR_TABLE if (a & 1) Masked_Attr |= A_BOLD; if (a & 2) Masked_Attr |= A_REVERSE; if (a & 4) Masked_Attr |= A_UNDERLINE; #endif #endif } PUBLIC void start_curses NOARGS { #ifdef USE_SLANG static int slinit; if (LYCursesON) { CTRACE((tfp, "start_curses: Hmm, already ON.\n")); return; } if (slinit == 0) { #if !defined(USE_KEYMAPS) SLtt_get_terminfo(); #endif #if (defined(__DJGPP__) && !defined(DJGPP_KEYHANDLER)) || defined(__CYGWIN__) SLkp_init (); #endif /* __DJGPP__ && !DJGPP_KEYHANDLER */ #if defined(UNIX) && !defined(__CYGWIN__) #if SLANG_VERSION >= 9935 SLang_TT_Read_FD = fileno(stdin); #endif /* SLANG_VERSION >= 9935 */ #endif /* UNIX && !__CYGWIN__ */ #if !defined(USE_KEYMAPS) && defined(ENHANCED_LINEEDIT) && defined(ESCDELAY) /* way to get ESC that's not part of a recognized sequence through */ ESCDELAY = 2000; #endif /* * Check whether a saved show_color:off override is in effect. - kw */ if (LYrcShowColor == SHOW_COLOR_NEVER) { SLtt_Use_Ansi_Colors = 0; } /* * Check whether we're forcing color on. - FM */ if ((LYShowColor > 1) && (Lynx_Color_Flags & SL_LYNX_USE_COLOR)) SLtt_Use_Ansi_Colors = 1; /* * Check whether a -nocolor override is in effect. - kw */ if (Lynx_Color_Flags & SL_LYNX_OVERRIDE_COLOR) SLtt_Use_Ansi_Colors = 0; /* * Make sure our flags are in register. - FM */ if (SLtt_Use_Ansi_Colors == 1) { if (LYShowColor != SHOW_COLOR_ALWAYS) { LYShowColor = SHOW_COLOR_ON; } } else { if (LYShowColor != SHOW_COLOR_NEVER) { LYShowColor = SHOW_COLOR_OFF; } } size_change(0); #if (defined(VMS) || defined(UNIX)) && !defined(__CYGWIN__) SLtt_add_color_attribute(4, SLTT_ULINE_MASK); SLtt_add_color_attribute(5, SLTT_ULINE_MASK); /* * If set, the blink escape sequence will turn on high * intensity background (rxvt and maybe Linux console). */ if (LYShowColor && (Lynx_Color_Flags & SL_LYNX_USE_BLINK)) { SLtt_Blink_Mode = 1; } else { SLtt_Blink_Mode = 0; } #endif /* (VMS || UNIX) && !__CYGWIN__ */ } #ifdef __DJGPP__ #ifdef WATT32 _eth_init(); #else else sock_init(); #endif /* WATT32 */ #endif /* __DJGPP__ */ slinit = 1; Current_Attr = 0; #ifndef VMS #if SLANG_VERSION > 9929 SLang_init_tty(-1, 0, 1); #else SLang_init_tty(3, 0, 1); #endif /* SLANG_VERSION > 9929 */ #endif /* !VMS */ SLsmg_init_smg(); SLsmg_Display_Eight_Bit = LYlowest_eightbit[current_char_set]; if (SLsmg_Display_Eight_Bit > 191) SLsmg_Display_Eight_Bit = 191; /* may print ctrl chars otherwise - kw */ scrollok(0,0); SLsmg_Backspace_Moves = 1; #ifndef VMS #if defined(UNIX) && !defined(__CYGWIN__) SLtty_set_suspend_state(1); #endif /* UNIX && !__CYGWIN__ */ #ifdef SIGTSTP if (!no_suspend) signal(SIGTSTP, sl_suspend); #endif /* SIGTSTP */ signal(SIGINT, cleanup_sig); #endif /* !VMS */ lynx_enable_mouse (1); #else /* Using curses: */ #ifdef VMS /* * If we are VMS then do initscr() everytime start_curses() * is called! */ initscr(); /* start curses */ #else /* Unix: */ static BOOLEAN first_time = TRUE; if (first_time) { /* * If we're not VMS then only do initscr() one time, * and one time only! */ if (initscr() == NULL) { /* start curses */ fprintf(tfp, "%s\n", gettext("Terminal initialisation failed - unknown terminal type?")); exit_immediately (-1); } lynx_called_initscr = TRUE; #if defined(SIGWINCH) && defined(NCURSES_VERSION) size_change(0); recent_sizechange = FALSE; /* prevent mainloop drawing 1st doc twice */ #endif /* SIGWINCH */ #if defined(USE_KEYMAPS) && defined(NCURSES_VERSION) if (-1 == lynx_initialize_keymaps ()) { endwin(); exit (-1); } #endif /* * This is a workaround for a bug in SVr4 curses, observed on Solaris * 2.4: if your terminal's alternate-character set contains codes in * the range 128-255, they'll be sign-extended in the acs_map[] table, * which in turn causes their values to be emitted as 255 (0xff). * "Fix" this by forcing the table to 8-bit codes (it has to be * anyway). */ #if defined(ALT_CHAR_SET) && !defined(NCURSES_VERSION) { int n; for (n = 0; n < 128; n++) if (ALT_CHAR_SET[n] & 0x80) { ALT_CHAR_SET[n] &= 0xff; ALT_CHAR_SET[n] |= A_ALTCHARSET; } } #endif #if defined(USE_COLOR_STYLE) || defined(USE_COLOR_TABLE) if (has_colors()) { lynx_has_color = TRUE; start_color(); #if USE_DEFAULT_COLORS #if HAVE_USE_DEFAULT_COLORS /* ncurses 4.1 */ #if HAVE_ASSUME_DEFAULT_COLORS /* ncurses 5.1 */ #if !defined(USE_COLOR_STYLE) /* * If no "default" color was specified in the cfg file, adjust the * color mapping table so we'll not use the codes that would work * if we had called use_default_colors(). */ if (default_fg < 0 || default_bg < 0) { if (assume_default_colors(default_fg, default_bg) != OK) { default_fg = COLOR_WHITE; default_bg = COLOR_BLACK; } } if (default_fg >= 0 || default_bg >= 0) { unsigned n; for (n = 0; n < TABLESIZE(lynx_color_cfg); n++) { if (default_fg >= 0 && lynx_color_cfg[n].fg < 0) lynx_color_cfg[n].fg = default_fg; if (default_bg >= 0 && lynx_color_cfg[n].bg < 0) lynx_color_cfg[n].bg = default_bg; CTRACE((tfp, "color_cfg[%d] = %d/%d\n", n, lynx_color_cfg[n].fg, lynx_color_cfg[n].bg)); } lynx_setup_colors(); } #endif #else lynx_default_colors(); #endif /* HAVE_ASSUME_DEFAULT_COLORS */ #endif /* HAVE_USE_DEFAULT_COLORS */ #endif /* USE_DEFAULT_COLORS */ } #endif /* USE_COLOR_STYLE || USE_COLOR_TABLE */ #ifdef USE_COLOR_STYLE parse_userstyles(); #endif first_time = FALSE; #if USE_COLOR_TABLE lynx_init_colors(); #endif /* USE_COLOR_TABLE */ } #ifdef __DJGPP__ #ifdef WATT32 _eth_init(); #else else sock_init(); #endif /* WATT32 */ #endif /* __DJGPP__ */ #endif /* not VMS */ /* nonl(); */ /* seems to slow things down */ #ifdef VMS crmode(); raw(); #else #if HAVE_CBREAK cbreak(); #else crmode(); #endif /* HAVE_CBREAK */ signal(SIGINT, cleanup_sig); #endif /* VMS */ noecho(); #if HAVE_KEYPAD keypad(stdscr,TRUE); #endif /* HAVE_KEYPAD */ lynx_enable_mouse (1); fflush(stdin); fflush(stdout); fflush(stderr); #endif /* USE_SLANG */ #if defined(WIN_EX) clear(); #endif LYCursesON = TRUE; CTRACE((tfp, "start_curses: done.\n")); } /* end of start_curses() */ PUBLIC void lynx_enable_mouse ARGS1(int,state) { #if defined(WIN_EX) /* modify lynx_enable_mouse() for pdcurses configuration so that mouse support is disabled unless -use_mouse is specified. This is ifdef'd with __BORLANDC__ for the time being (WB). */ HANDLE hConIn = INVALID_HANDLE_VALUE; hConIn = GetStdHandle(STD_INPUT_HANDLE); if (LYUseMouse == 0) { SetConsoleMode(hConIn, ENABLE_WINDOW_INPUT); FlushConsoleInputBuffer(hConIn); return; } #endif if (LYUseMouse == 0) return; #ifdef USE_SLANG_MOUSE SLtt_set_mouse_mode (state, 0); SLtt_flush_output (); #else #ifdef NCURSES_MOUSE_VERSION #if defined(WIN_EX) && defined(PDCURSES) if (state) { SetConsoleMode(hConIn, ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT); FlushConsoleInputBuffer(hConIn); } #else if (state) { /* Compensate for small value of maxclick in ncurses. */ static int was = 0; if (!was) { int old = mouseinterval(-1); was++; if (old < 200) /* Default 166 */ mouseinterval(300); } /* Inform ncurses which mouse events we're interested in. * We shouldn't need to include BUTTONn_PRESSED and BUTTONn_RELEASED * events, since ncurses should translate them to click events. - kw * However, if we do not include them, then ncurses effectively * ignores mouseinterval(), thus translates *any* sequence of * press/release to a click, which leads to inconveniences. * We special-case these events in LYStrings.c. */ mousemask(BUTTON_CTRL | BUTTON_ALT | BUTTON1_PRESSED | BUTTON1_RELEASED | BUTTON1_CLICKED | BUTTON1_DOUBLE_CLICKED | BUTTON1_TRIPLE_CLICKED | BUTTON2_PRESSED | BUTTON2_RELEASED | BUTTON2_CLICKED | BUTTON3_PRESSED | BUTTON3_RELEASED | BUTTON3_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON3_TRIPLE_CLICKED, NULL); } else mousemask(0, NULL); #endif /* WIN_EX and PDCURSES */ #endif /* NCURSES_MOUSE_VERSION */ #if defined(DJGPP) && !defined(USE_SLANG) if (state) mouse_set(BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED); #endif #endif /* NOT USE_SLANG_MOUSE */ } PUBLIC void stop_curses NOARGS { if (LYCursesON) echo(); #ifdef __DJGPP__ #ifdef WATT32 _eth_release(); #else sock_exit(); #endif /* WATT32 */ #endif /* __DJGPP__ */ #if defined(DOSPATH) && !(defined(USE_SLANG) || _WIN_CC) clrscr(); #else /* * Fixed for better dumb terminal support. * 05-28-94 Lynx 2-3-1 Garrett Arch Blythe */ if(LYCursesON == TRUE) { lynx_enable_mouse (0); #ifndef WIN_EX /* @@@ */ endwin(); /* stop curses */ #endif } #ifdef SH_EX { int i; for (i=0; i <= 3; i++) { fprintf(stdout, "\r\n"); } } #endif fflush(stdout); #endif /* DJGPP */ fflush(stderr); LYCursesON = FALSE; CTRACE((tfp, "stop_curses: done.\n")); #if defined(SIGTSTP) && defined(USE_SLANG) #ifndef VMS if (!no_suspend) signal(SIGTSTP, SIG_DFL); #endif /* !VMS */ #endif /* SIGTSTP && USE_SLANG */ #ifndef VMS signal(SIGINT, SIG_DFL); #endif /* !VMS */ } #ifdef VMS /* * Check terminal type, start curses & setup terminal. */ PUBLIC BOOLEAN setup ARGS1( char *, terminal) { int c; int status; char *dummy = 0, *cp, term[81]; #ifdef USE_SLANG extern void longname(); #endif /* USE_SLANG */ /* * If the display was not set by a command line option then * see if it is available from the environment. */ if ((cp = LYgetXDisplay()) != 0) { StrAllocCopy(x_display, cp); } else { FREE(x_display); } /* * Get terminal type, and convert to lower case. */ term[0] = '\0'; longname(dummy, term); if (term[0] == '\0' && (form_get_data || form_post_data)) { /* * Some yoyo used these under conditions which require * -dump, so force that mode here. - FM */ dump_output_immediately = TRUE; LYcols = 80; if (keypad_mode == NUMBERS_AS_ARROWS) keypad_mode = LINKS_ARE_NUMBERED; status = mainloop(); (void) signal (SIGHUP, SIG_DFL); (void) signal (SIGTERM, SIG_DFL); #ifdef SIGTSTP if (no_suspend) (void) signal(SIGTSTP,SIG_DFL); #endif /* SIGTSTP */ exit(status); } LYLowerCase(term); printf("%s%s\n", gettext("Terminal ="), term); sleep(InfoSecs); if ((strlen(term) < 5) || strncmp(term, "vt", 2) || !isdigit(term[2])) { printf("%s\n", gettext("You must use a vt100, 200, etc. terminal with this program.")); printf(CONFIRM_PROCEED, "n/y"); c = getchar(); if (c != 'y' && c != 'Y') { printf("\n"); return(FALSE); } strcpy(term,"vt100"); } ttopen(); start_curses(); LYlines = LINES; LYcols = COLS; if (LYlines <= 0) LYlines = 24; if (LYcols <= 0) LYcols = 80; return(TRUE); } #else /* Not VMS: */ /* * Check terminal type, start curses & setup terminal. */ PUBLIC BOOLEAN setup ARGS1( char *, terminal) { char *term_putenv = NULL; char *buffer = NULL; char *cp; #if defined(HAVE_SIZECHANGE) && !defined(USE_SLANG) && defined(NOTDEFINED) /* * Hack to deal with a problem in sysV curses, that screen can't be * resized to greater than the size used by initscr, which can only * be called once. So set environment variables LINES and COLUMNS * to some suitably large size to force initscr to allocate enough * space. Later we get the real window size for setting LYlines * and LYcols. - AJL & FM * * Has problems, so we don't use this hack, but the code is here * if someone wants to play with it some more. - FM */ char *lines_putenv = NULL; char *cols_putenv = NULL; if (getenv("LINES") == NULL && getenv("COLUMNS") == NULL) { StrAllocCopy(lines_putenv, "LINES=120"); (void) putenv(lines_putenv); StrAllocCopy(cols_putenv, "COLUMNS=240"); (void) putenv(cols_putenv); } #endif /* HAVE_SIZECHANGE && !USE_SLANG && NOTDEFINED */ /* * If the display was not set by a command line option then * see if it is available from the environment . */ if ((cp = LYgetXDisplay()) != NULL) { StrAllocCopy(x_display, cp); } else { FREE(x_display); } if (terminal != NULL) { HTSprintf0(&term_putenv, "TERM=%.106s", terminal); (void) putenv(term_putenv); } /* * Query the terminal type. */ if (dumbterm(getenv("TERM"))) { char *s; printf("\n\n %s\n\n", gettext("Your Terminal type is unknown!")); printf(" %s [vt100] ", gettext("Enter a terminal type:")); if (LYSafeGets(&buffer, stdin) != 0) if ((s = strchr(buffer, '\n')) != NULL) *s = '\0'; if (buffer == 0 || *buffer == 0) StrAllocCopy(buffer,"vt100"); HTSprintf0(&term_putenv,"TERM=%.106s", buffer); FREE(buffer); (void) putenv(term_putenv); printf("\n%s %s\n", gettext("TERMINAL TYPE IS SET TO"), getenv("TERM")); sleep(MESSAGESECS); } start_curses(); #if HAVE_TTYTYPE /* * Get terminal type (strip 'dec-' from vms style types). */ if (strncmp((CONST char*)ttytype, "dec-vt", 6) == 0) { (void) setterm(ttytype + 4); } /* * Account for lossage on the 'sun' terminal type (80x24) Sun text * console driver. It only supports reverse video, but all SGR * sequences produce that same reverse video, and the terminfo * entry lists different SGRs for 'bold' and 'rev'. As a result, * the current link is indistinguishable from all other links. * The workaround here is to disable the 'rev' capability. */ if ((strncmp(ttytype, "sun", 3) == 0)) { LYnoVideo(2); } #endif /* HAVE_TTYTYPE */ #if defined(HAVE_SIZECHANGE) && !defined(USE_SLANG) && defined(NOTDEFINED) if (lines_putenv != NULL) { /* * Use SIGWINCH handler to set the true window size. - AJL && FM * * Has problems, so we don't use this hack, but the code is here * if someone wants to play with it some more. - FM */ size_change(0); lines_putenv[6] = '\0'; (void) putenv(lines_putenv); cols_putenv[8] = '\0'; (void) putenv(cols_putenv); FREE(lines_putenv); FREE(cols_putenv); } else { LYlines = LINES; LYcols = COLS; } #else LYlines = LINES; LYcols = COLS; #endif /* HAVE_SIZECHANGE && !USE_SLANG && USE_NOTDEFINED */ #if defined(PDCURSES_EXP) && defined(WIN_EX) && defined(CJK_EX) /* 1999/08/26 (Thu) 17:53:38 */ { extern int current_codepage; /* PDCurses lib. */ if (current_codepage == 932) LYcols = COLS - 1; } #endif if (LYlines <= 0) LYlines = 24; if (LYcols <= 0) LYcols = 80; return(1); } PRIVATE int dumbterm ARGS1( char *, terminal) { int dumb = FALSE; /* * Began checking for terminal == NULL in case that TERM environment * variable is not set. Thanks to Dick Wesseling (ftu@fi.ruu.nl). */ if (terminal == NULL || !strcasecomp(terminal, "network") || !strcasecomp(terminal, "unknown") || !strcasecomp(terminal, "dialup") || !strcasecomp(terminal, "dumb") || !strcasecomp(terminal, "switch") || !strcasecomp(terminal, "ethernet") ) dumb = TRUE; return(dumb); } #ifdef FANCY_CURSES #ifndef USE_COLOR_STYLE #if USE_COLOR_TABLE PUBLIC void LYaddWAttr ARGS2( WINDOW *, win, int, a) { Current_Attr |= a; LYsetWAttr(win); } PUBLIC void LYaddAttr ARGS1( int, a) { LYaddWAttr(stdscr, a); } PUBLIC void LYsubWAttr ARGS2( WINDOW *, win, int, a) { Current_Attr &= ~a; LYsetWAttr(win); } PUBLIC void LYsubAttr ARGS1( int, a) { LYsubWAttr(stdscr, a); } #endif /* USE_COLOR_TABLE */ #endif /* !USE_COLOR_STYLE */ #endif /* FANCY_CURSES */ #endif /* VMS */ PUBLIC void LYstartTargetEmphasis NOARGS { #ifdef USE_COLOR_STYLE if (s_whereis != NOSTYLE) { curses_style(s_whereis, STACK_ON); return; } #endif #if defined(FANCY_CURSES) || defined(USE_SLANG) start_bold(); start_reverse(); #endif /* FANCY_CURSES || USE_SLANG */ start_underline(); } PUBLIC void LYstopTargetEmphasis NOARGS { #ifdef USE_COLOR_STYLE if (s_whereis != NOSTYLE) { curses_style(s_whereis, STACK_OFF); return; } #endif stop_underline(); #if defined(FANCY_CURSES) || defined(USE_SLANG) stop_reverse(); stop_bold(); #endif /* FANCY_CURSES || USE_SLANG */ } /* * Accommodate the different flavors of touchline */ PUBLIC void LYtouchline ARGS1( int, row) { #if defined(HAVE_WREDRAWLN) wredrawln(stdscr, row, 1); #else #if defined(VMS) && !defined(_BSD44_CURSES) /* touchline() is not available on VMS before version 7.0, and then * only on Alpha, since prior ports of curses were broken. */ touchwin(stdscr); #else #if defined(FANCY_CURSES) touchline(stdscr, row, 1); #else #if defined(USE_SLANG) SLsmg_touch_lines(row, 1); #endif #endif #endif #endif } /* * There's no guarantee that a library won't temporarily write on its input. * Be safe and copy it when we have const-data. */ PUBLIC void LYwaddnstr ARGS3( WINDOW *, w, CONST char *, s, size_t, len) { if (len != 0) { char temp[MAX_LINE]; memcpy(temp, s, len); temp[len] = 0; waddstr(w, temp); } } #ifdef VMS /* * Cut-down termio -- * Do character-oriented stream input for Jeff. * Code ripped off from Micro-Emacs 3.7 by Daniel Lawrence. * * Ever-so-slightly modified by Kathryn Huxtable. 29-Jan-1991. * Cut down for Lou. 8 Sep 1992. * Cut down farther for Lou. 19 Apr 1993. * We don't set PASSALL or PASTHRU since we don't * want to block CTRL/C, CTRL/Y, CTRL/S or CTRL/Q. * Simply setting NOECHO and doing timed reads * is sufficient. * Further mods by Fote. 29-June-1993 * ttopen() and ttclose() are now terminal initialization * and restoration procedures, called once at startup * and at exit, respectively, of the LYNX image. * ttclose() should be called before an exit from LYNX * no matter how the exit is invoked. * setup(terminal) does the ttopen(). * cleanup() calls cleanup_files() and ttclose(). * ttgetc() now handles NOECHO and NOFLITR (instead of * setting the terminal itself to NOECHO in ttopen()). * VMSsignal() added for handling both Ctrl-C *and* Ctrl-Y * interrupts, and disabling system response to Ctrl-T. * Further mods by Fote. 15-Dec-1993 * Added edit handler in ttopen() which will invoke * VMSexit() and behave intelligently on ACCVIO's. * Further mods by Fote. 29-Dec-1993 * Simplified ttgetc(). * Further mods by Fote. 16-Jan-1994 * Added code in ttopen() which will invoke VMSVersion() * to get the version of VMS as VersionVMS for use by * by new or modified interrupt or spawning routines. * Further mods by Fote. 27-Jan-1994 * Added back a typeahead() which supports 'z' or 'Z' as * an "Zap transfer" command via HTCheckForInterrupt() * in LYUtils.c. */ #include #include #include #include #include #include #include #include #include #include #include #ifdef signal #undef signal #endif /* signal */ #include #ifdef system #undef system #endif /* system */ #include #include #define EFN 0 /* Event flag */ static unsigned char buffer[20]; /* Input buffer */ static int in_pos, in_len; /* For escape sequences */ static int oldmode[3]; /* Old TTY mode bits */ static int newmode[3]; /* New TTY mode bits */ static short iochan; /* TTY I/O channel */ static $DESCRIPTOR(term_nam_dsc,"TT"); /* Descriptor for iochan */ static unsigned long mask = LIB$M_CLI_CTRLY|LIB$M_CLI_CTRLT; /* ^Y and ^T */ static unsigned long old_msk; /* Saved control mask */ static short trap_flag = FALSE; /* TRUE if AST is set */ BOOLEAN DidCleanup = FALSE; /* Exit handler flag */ static char VersionVMS[20]; /* Version of VMS */ PUBLIC int VMSVersion ARGS2( char *, VerString, int, VerLen) { unsigned long status, itm_cod = SYI$_VERSION; int i, verlen = 0; struct dsc$descriptor version; char *m; version.dsc$a_pointer = VerString; version.dsc$w_length = VerLen - 1; version.dsc$b_dtype = DSC$K_DTYPE_B; version.dsc$b_class = DSC$K_CLASS_S; status = lib$getsyi(&itm_cod, 0, &version, &verlen, 0, 0); if (!(status&1) || verlen == 0) return 0; /* * Cut out trailing spaces */ for (m = VerString+verlen, i = verlen-1; i > 0 && VerString[i] == ' '; --i) *(--m) = '\0'; return strlen(VerString)+1; /* Transmit ending 0 too */ } PUBLIC void VMSexit NOARGS { /* * If we get here and DidCleanup is not set, it was via an * ACCVIO, or outofmemory forced exit, so make *sure* we * attempt a cleanup and reset the terminal. */ if (!DidCleanup) { if (LYOutOfMemory == FALSE) { fprintf(stderr, gettext("\nA Fatal error has occurred in %s Ver. %s\n"), LYNX_NAME, LYNX_VERSION); fprintf(stderr, gettext("\nPlease notify your system administrator to confirm a bug, and if\n\ confirmed, to notify the lynx-dev list. Bug reports should have concise\n\ descriptions of the command and/or URL which causes the problem, the\n\ operating system name with version number, the TCPIP implementation, the\n\ TRACEBACK if it can be captured, and any other relevant information.\n")); if (LYTraceLogFP == NULL) { fprintf(stderr,RETURN_TO_CLEANUP); (void) getchar(); } } else if (LYCursesON) { HTAlert(MEMORY_EXHAUSTED_ABORT); } cleanup(); } if (LYOutOfMemory == TRUE) { printf("\r\n%s\r\n\r\n", MEMORY_EXHAUSTED_ABORT); fflush(stdout); fflush(stderr); } } /* * TTOPEN -- * This function is called once to set up the terminal * device streams. It translates TT until it finds * the terminal, then assigns a channel to it, sets it * to EDIT, and sets up the Ctrl-C and Ctrl-Y interrupt * handling. */ PUBLIC int ttopen NOARGS { extern void cleanup_sig(); int iosb[2]; int status; static unsigned long condition; static struct _exit_block { unsigned long forward; unsigned long address; unsigned long zero; unsigned long condition; } exit_handler_block; status = sys$assign( &term_nam_dsc, &iochan, 0, 0 ); if( status != SS$_NORMAL ) exit( status ); status = sys$qiow( EFN, iochan, IO$_SENSEMODE, &iosb, 0, 0, &oldmode, sizeof(oldmode), 0, 0, 0, 0 ); if( status != SS$_NORMAL ) exit( status ); status = iosb[0] & 0xFFFF; if( status != SS$_NORMAL ) exit( status ); newmode[0] = oldmode[0]; newmode[1] = oldmode[1]; newmode[2] = oldmode[2] | TT2$M_EDIT; status = sys$qiow( EFN, iochan, IO$_SETMODE, &iosb, 0, 0, &newmode, sizeof(newmode), 0, 0, 0, 0 ); if( status != SS$_NORMAL ) exit( status ); status = iosb[0] & 0xFFFF; if( status != SS$_NORMAL ) exit( status ); /* * Declare the exit handler block. */ exit_handler_block.forward = 0; exit_handler_block.address = (unsigned long) &VMSexit; exit_handler_block.zero = 0; exit_handler_block.condition = (unsigned long) &condition; status = sys$dclexh(&exit_handler_block); if (status != SS$_NORMAL) exit( status ); /* * Set the AST. */ lib$disable_ctrl(&mask, &old_msk); trap_flag = TRUE; status = sys$qiow ( EFN, iochan, IO$_SETMODE|IO$M_CTRLCAST|IO$M_CTRLYAST, &iosb, 0, 0, &cleanup_sig, SIGINT, 0, 0, 0, 0 ); if ( status != SS$_NORMAL ) { lib$enable_ctrl(&old_msk); exit ( status ); } /* * Get the version of VMS. */ if (VMSVersion(VersionVMS, 20) < 3) /* * Load zeros on error. */ strcpy(VersionVMS, "V0.0-0"); return(0); } /* ttopen */ /* * TTCLOSE -- * This function gets called just before we go back home * to the command interpreter. It puts the terminal back * in a reasonable state. */ PUBLIC int ttclose NOARGS { int status; int iosb[1]; status = sys$qiow( EFN, iochan, IO$_SETMODE, &iosb, 0, 0, &oldmode, sizeof(oldmode), 0, 0, 0, 0 ); if( status != SS$_NORMAL || (iosb[0] & 0xFFFF) != SS$_NORMAL ) exit( status ); if (trap_flag) { status = sys$dassgn (iochan); status = lib$enable_ctrl(&old_msk); trap_flag = FALSE; } return(0); } /* ttclose */ /* * TTGETC -- * Read a character from the terminal, with NOECHO and NOFILTR. */ PUBLIC int ttgetc NOARGS { int status; unsigned short iosb[4]; if (in_pos < in_len) return(buffer[in_pos++]); status = sys$qiow(EFN, iochan, IO$_READVBLK|IO$M_NOECHO|IO$M_NOFILTR, &iosb, 0, 0, &buffer, 1, 0, 0, 0, 0); if ((status&1) == 1) status = iosb[0]; if (status == SS$_PARTESCAPE) { /* * Escape sequence in progress. Fake a successful read. */ status = 1; } if ((status&1) != 1 && status != SS$_DATAOVERUN) exit(status); in_pos = 1; in_len = iosb[1] + iosb[3]; return(buffer[0]); } /* * TYPEAHEAD -- Fote Macrides 27-Jan-1994 * Check whether a keystroke has been entered, and return * it, or -1 if none was entered. */ PUBLIC int typeahead NOARGS { int status; unsigned short iosb[4]; if (dump_output_immediately) return -1; if (in_pos < in_len) return(buffer[in_pos++]); again: status = sys$qiow (EFN, iochan, IO$_READVBLK|IO$M_TIMED|IO$M_NOECHO|IO$M_NOFILTR, &iosb, 0, 0, &buffer, 1, 0, 0, 0, 0); if ((status&1) == 1) status = iosb[0]; if (status == SS$_PARTESCAPE) { /* * Escape sequence in progress, finish reading it. */ goto again; } in_pos = 1; in_len = iosb[1] + iosb[3]; if (status == SS$_TIMEOUT || status == SS$_DATAOVERUN) return(-1); return (buffer[0]); } /* * VMSSIGNAL -- Fote Macrides 29-Jun-1993 * Sets up AST for both Ctrl-C and Ctrl-Y, with system response * to Ctrl-T disabled. If called with a sig other than SIGINT, * it will use the C library's system(sig, func). * The equivalent of VMSsignal(SIGINT, cleanup_sig) is done on * intialization by ttopen(), so don't do it again. * VMSsignal(SIGINT, SIG_DFL) is treated as a call to ttclose(). * Call VMSsignal(SIGINT, SIG_IGN) before system() calls to * enable Ctrl-C and Ctrl-Y in the subprocess, and then call * VMSsignal(SIG_INT, cleanup_sig) on return from the subprocess. * For func's which set flags and do not invoke an exit from * LYNX, the func should reassert itself. * The VMS signal() calls do not fully emulate the Unix calls, * and VMSsignal() is just a "helper", also not a full emulation. */ PUBLIC void VMSsignal (sig,func) int sig; void (*func)(); { int status; short iosb[4]; static int SIG_IGN_flag; /* * Pass all signals other than SIGINT to signal(). * Also pass SIGINT to signal() if we're dumping. */ if (sig != SIGINT || dump_output_immediately) { signal(sig, func); return; } /* * If func is SIG_DFL, treat it as ttclose(). */ if (func == SIG_DFL) { ttclose(); return; } /* * Clear any previous AST. */ if (trap_flag) { status = sys$dassgn (iochan); status = lib$enable_ctrl(&old_msk); trap_flag = FALSE; } /* * If func is SIG_IGN, leave the TT channel closed and the * system response to interrupts enabled for system() calls. */ if (func == SIG_IGN) return; /* * If we get to here, we have a LYNX func, so set the AST. */ lib$disable_ctrl(&mask, &old_msk); trap_flag = TRUE; status = sys$assign (&term_nam_dsc, &iochan, 0, 0 ); status = sys$qiow ( EFN, iochan, IO$_SETMODE|IO$M_CTRLCAST|IO$M_CTRLYAST, &iosb, 0, 0, func, SIGINT, 0, 0, 0, 0 ); } /* VMSsignal */ /* * DCLspawn_exception, spawn_DCLprocess, DCLsystem -- F.Macrides 16-Jan-1994 * Exception-handler routines for regulating interrupts and enabling * Control-T during spawns. Includes TRUSTED flag for versions of VMS * which require it in captive accounts. This code should be used * instead of the VAXC or DECC system(), by including LYUtils.h in * modules which have system() calls. It helps ensure that we return * to Lynx instead of breaking out to DCL if a user issues interrupts * or generates an ACCVIO during spawns. */ #ifdef __DECC PRIVATE unsigned int DCLspawn_exception ARGS2( void *, sigarr, void *, mecharr) #else PRIVATE int DCLspawn_exception ARGS2( void *, sigarr, void *, mecharr) #endif /* __DECC */ { int status; status = lib$sig_to_ret(sigarr, mecharr); return(SS$_UNWIND); } PRIVATE int spawn_DCLprocess ARGS1( char *, command) { int status; unsigned long Status = 0; /* * Keep DECC from complaining. */ struct dsc$descriptor_s command_desc; command_desc.dsc$w_length = strlen(command); command_desc.dsc$b_class = DSC$K_CLASS_S; command_desc.dsc$b_dtype = DSC$K_DTYPE_T; command_desc.dsc$a_pointer = command; VAXC$ESTABLISH(DCLspawn_exception); #ifdef __ALPHA /** OpenVMS/AXP lacked the TRUSTED flag before v6.1 **/ if (VersionVMS[1] > '6' || (VersionVMS[1] == '6' && VersionVMS[2] == '.' && VersionVMS[3] >= '1')) #else if (VersionVMS[1] >= '6') #endif /* __ALPHA */ { /* * Include TRUSTED flag. */ unsigned long trusted = CLI$M_TRUSTED; status = lib$spawn(&command_desc,0,0,&trusted, 0,0,&Status); /* * If it was invalid, try again without the flag. */ if (status == LIB$_INVARG) status = lib$spawn(&command_desc,0,0,0, 0,0,&Status ); } else status = lib$spawn(&command_desc,0,0,0, 0,0,&Status); /* * Return -1 on error. */ if ((status&1) != 1 || (Status&1) != 1) return(-1); /* * Return 0 on success. */ return(0); } PUBLIC int DCLsystem ARGS1( char *, command) { int status; extern void controlc(); VMSsignal(SIGINT, SIG_IGN); status = spawn_DCLprocess(command); VMSsignal(SIGINT, cleanup_sig); /* * Returns 0 on success, -1 any error. */ return(status); } #endif /* VMS */ PUBLIC void lynx_force_repaint NOARGS { #if defined(COLOR_CURSES) chtype a; if (LYShowColor >= SHOW_COLOR_ON) a = COLOR_BKGD; else a = A_NORMAL; bkgdset(a | ' '); #if !defined(USE_COLOR_STYLE) && defined(NCURSES_VERSION) #if NCURSES_VERSION_MAJOR < 4 || (NCURSES_VERSION_MAJOR == 4 && NCURSES_VERSION_MINOR == 0) bkgd(a | ' '); #endif #endif attrset(a); #endif /* COLOR_CURSES */ clearok(curscr, TRUE); } PUBLIC void lynx_start_title_color NOARGS { #ifdef SH_EX start_reverse(); #endif } PUBLIC void lynx_stop_title_color NOARGS { #ifdef SH_EX stop_reverse(); #endif } PUBLIC void lynx_start_link_color ARGS2( int, flag, int, pending) { if (flag) { /* makes some terminals work wrong because * they can't handle two attributes at the * same time */ /* start_bold(); */ start_reverse(); #if defined(USE_SLANG) #ifndef __DJGPP__ if (SLtt_Use_Ansi_Colors) #endif /* !__DJGPP__ */ start_underline (); #endif /* USE_SLANG */ #if defined(FANCY_CURSES) && defined(COLOR_CURSES) if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) start_underline (); #endif /* USE_SLANG */ } else { start_bold(); /* * Make sure when flag is OFF that "unhighlighted" links * will be underlined if appropriate. - LE & FM */ if (pending) start_underline(); } } PUBLIC void lynx_stop_link_color ARGS2( int, flag, int, pending GCC_UNUSED) { #ifdef USE_COLOR_STYLE LynxChangeStyle(flag == ON ? s_alink : s_a, ABS_OFF, 0); #else if (flag) { stop_reverse(); #if defined(USE_SLANG) #ifndef __DJGPP__ if (SLtt_Use_Ansi_Colors) #endif /* !__DJGPP__ */ stop_underline (); #endif /* USE_SLANG */ #if defined(FANCY_CURSES) && defined(COLOR_CURSES) if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) stop_underline (); #endif /* FANCY_CURSES && COLOR_CURSES */ } else { stop_bold(); /* * If underlining was turned on above, turn it off. - LE & FM */ if (pending) stop_underline(); } #endif } PUBLIC void lynx_stop_target_color NOARGS { stop_underline(); stop_reverse(); stop_bold(); } PUBLIC void lynx_start_target_color NOARGS { start_bold(); start_reverse(); start_underline(); } PUBLIC void lynx_start_status_color NOARGS { #if USE_COLOR_TABLE && defined(COLOR_CURSES) if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) lynx_set_color (2); else #endif start_reverse (); } PUBLIC void lynx_stop_status_color NOARGS { #if USE_COLOR_TABLE && defined(COLOR_CURSES) if (lynx_has_color && LYShowColor >= SHOW_COLOR_ON) lynx_set_color (0); else #endif stop_reverse (); } PUBLIC void lynx_start_h1_color NOARGS { if (bold_H1 || bold_headers) start_bold(); } PUBLIC void lynx_stop_h1_color NOARGS { if (bold_H1 || bold_headers) stop_bold(); } PUBLIC void lynx_start_prompt_color NOARGS { start_reverse (); } PUBLIC void lynx_stop_prompt_color NOARGS { stop_reverse (); } PUBLIC void lynx_start_radio_color NOARGS { start_bold (); } PUBLIC void lynx_stop_radio_color NOARGS { stop_bold (); } PUBLIC void lynx_stop_all_colors NOARGS { stop_underline (); stop_reverse (); stop_bold (); }