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Comparing rxvt-unicode/src/command.C (file contents):
Revision 1.9 by pcg, Thu Nov 27 10:12:10 2003 UTC vs.
Revision 1.16 by pcg, Wed Dec 17 09:00:35 2003 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: command.c 2 * File: command.c
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * $Id: command.C,v 1.9 2003/11/27 10:12:10 pcg Exp $ 4 * $Id: command.C,v 1.16 2003/12/17 09:00:35 pcg Exp $
5 * 5 *
6 * All portions of code are copyright by their respective author/s. 6 * All portions of code are copyright by their respective author/s.
7 * Copyright (c) 1992 John Bovey, University of Kent at Canterbury <jdb@ukc.ac.uk> 7 * Copyright (c) 1992 John Bovey, University of Kent at Canterbury <jdb@ukc.ac.uk>
8 * - original version 8 * - original version
9 * Copyright (c) 1994 Robert Nation <nation@rocket.sanders.lockheed.com> 9 * Copyright (c) 1994 Robert Nation <nation@rocket.sanders.lockheed.com>
… …
61 unsigned int newlen; 61 unsigned int newlen;
62 KeySym keysym; 62 KeySym keysym;
63#ifdef DEBUG_CMD 63#ifdef DEBUG_CMD
64 static int debug_key = 1; /* accessible by a debugger only */ 64 static int debug_key = 1; /* accessible by a debugger only */
65#endif 65#endif
66#ifdef USE_XIM
67 int valid_keysym; 66 int valid_keysym;
68#endif
69 unsigned char *kbuf = R->kbuf; 67 unsigned char *kbuf = R->kbuf;
70 68
71/* 69/*
72 * use Num_Lock to toggle Keypad on/off. If Num_Lock is off, allow an 70 * use Num_Lock to toggle Keypad on/off. If Num_Lock is off, allow an
73 * escape sequence to toggle the Keypad. 71 * escape sequence to toggle the Keypad.
… …
75 * Always permit `shift' to override the current setting 73 * Always permit `shift' to override the current setting
76 */ 74 */
77 shft = (ev->state & ShiftMask); 75 shft = (ev->state & ShiftMask);
78 ctrl = (ev->state & ControlMask); 76 ctrl = (ev->state & ControlMask);
79 meta = (ev->state & R->ModMetaMask); 77 meta = (ev->state & R->ModMetaMask);
78
80 if (R->numlock_state || (ev->state & R->ModNumLockMask)) { 79 if (R->numlock_state || (ev->state & R->ModNumLockMask))
80 {
81 R->numlock_state = (ev->state & R->ModNumLockMask); 81 R->numlock_state = (ev->state & R->ModNumLockMask);
82 PrivMode((!R->numlock_state), PrivMode_aplKP); 82 PrivMode((!R->numlock_state), PrivMode_aplKP);
83 } 83 }
84
85 kbuf[0] = 0;
86
84#ifdef USE_XIM 87#ifdef USE_XIM
85 if (R->Input_Context != NULL) { 88 if (R->Input_Context)
89 {
86 Status status_return; 90 Status status_return;
87 91
88 kbuf[0] = '\0';
89#ifdef X_HAVE_UTF8_STRING 92#ifdef X_HAVE_UTF8_STRING
90 len = Xutf8LookupString(R->Input_Context, ev, (char *)kbuf, 93 len = Xutf8LookupString(R->Input_Context, ev, (char *)kbuf,
91 KBUFSZ, &keysym, &status_return); 94 KBUFSZ, &keysym, &status_return);
92#else 95#else
93 len = XmbLookupString(R->Input_Context, ev, (char *)kbuf, 96 len = XmbLookupString(R->Input_Context, ev, (char *)kbuf,
94 KBUFSZ, &keysym, &status_return); 97 KBUFSZ, &keysym, &status_return);
95#endif 98#endif
96 valid_keysym = ((status_return == XLookupKeySym) 99 valid_keysym = ((status_return == XLookupKeySym)
97 || (status_return == XLookupBoth)); 100 || (status_return == XLookupBoth));
101 }
98 } else { 102 else
103#endif
104 {
99 len = XLookupString(ev, (char *)kbuf, KBUFSZ, &keysym, 105 len = XLookupString(ev, (char *)kbuf, KBUFSZ, &keysym, &R->compose);
100 &R->compose);
101 valid_keysym = 1; 106 valid_keysym = !len;
102 } 107 }
103#else /* USE_XIM */
104 len = XLookupString(ev, (char *)kbuf, KBUFSZ, &keysym,
105 &R->compose);
106/*
107 * map unmapped Latin[2-4]/Katakana/Arabic/Cyrillic/Greek entries -> Latin1
108 * good for installations with correct fonts, but without XLOCALE
109 */
110 if (!len) {
111 if ((keysym >= 0x0100) && (keysym < 0x0800)) {
112 kbuf[0] = (keysym & 0xFF);
113 kbuf[1] = '\0';
114 len = 1;
115 } else
116 kbuf[0] = '\0';
117 }
118#endif /* USE_XIM */
119 108
120#ifdef USE_XIM
121 if (valid_keysym) 109 if (valid_keysym)
122#endif
123 { 110 {
124/* for some backwards compatibility */ 111/* for some backwards compatibility */
125#if defined(HOTKEY_CTRL) || defined(HOTKEY_META) 112#if defined(HOTKEY_CTRL) || defined(HOTKEY_META)
126# ifdef HOTKEY_CTRL 113# ifdef HOTKEY_CTRL
127 if (ctrl) { 114 if (ctrl)
128# else 115# else
129 if (meta) { 116 if (meta)
130# endif 117# endif
118 {
131 if (keysym == R->ks_bigfont) { 119 if (keysym == R->ks_bigfont)
120 {
132 rxvt_change_font(aR_ 0, FONT_UP); 121 rxvt_change_font(aR_ 0, FONT_UP);
133 return; 122 return;
123 }
134 } else if (keysym == R->ks_smallfont) { 124 else if (keysym == R->ks_smallfont)
125 {
135 rxvt_change_font(aR_ 0, FONT_DN); 126 rxvt_change_font(aR_ 0, FONT_DN);
136 return; 127 return;
137 } 128 }
138 } 129 }
139#endif 130#endif
140 131
141 if (R->TermWin.saveLines) { 132 if (R->TermWin.saveLines) {
142#ifdef UNSHIFTED_SCROLLKEYS 133#ifdef UNSHIFTED_SCROLLKEYS
143 if (!ctrl && !meta) { 134 if (!ctrl && !meta) {
… …
237 /* escape prefix */ 228 /* escape prefix */
238 if (meta) 229 if (meta)
239# ifdef META8_OPTION 230# ifdef META8_OPTION
240 if (R->meta_char == C0_ESC) 231 if (R->meta_char == C0_ESC)
241# endif 232# endif
242 rxvt_tt_write(aR_ &ch, 1); 233 R->tt_write (&ch, 1);
243 rxvt_tt_write(aR_ kbuf0, l); 234 R->tt_write (kbuf0, l);
244 return; 235 return;
245 } else 236 } else
246#endif 237#endif
247 { 238 {
248 newlen = 1; 239 newlen = 1;
… …
572 if (R->greek_mode) 563 if (R->greek_mode)
573 len = greek_xlat(kbuf, len); 564 len = greek_xlat(kbuf, len);
574#endif 565#endif
575 /* nil */ ; 566 /* nil */ ;
576 } 567 }
577 } 568 }
578 569
579 if (len <= 0) 570 if (len <= 0)
580 return; /* not mapped */ 571 return; /* not mapped */
581 572
582 if (R->Options & Opt_scrollTtyKeypress) 573 if (R->Options & Opt_scrollTtyKeypress)
… …
605 && (R->meta_char == C0_ESC) 596 && (R->meta_char == C0_ESC)
606#endif 597#endif
607 ) { 598 ) {
608 const unsigned char ch = C0_ESC; 599 const unsigned char ch = C0_ESC;
609 600
610 rxvt_tt_write(aR_ &ch, 1); 601 R->tt_write(&ch, 1);
611 } 602 }
612#ifdef DEBUG_CMD 603#ifdef DEBUG_CMD
613 if (debug_key) { /* Display keyboard buffer contents */ 604 if (debug_key) { /* Display keyboard buffer contents */
614 char *p; 605 char *p;
615 int i; 606 int i;
… …
618 for (i = 0, p = kbuf; i < len; i++, p++) 609 for (i = 0, p = kbuf; i < len; i++, p++)
619 fprintf(stderr, (*p >= ' ' && *p < '\177' ? "%c" : "\\%03o"), *p); 610 fprintf(stderr, (*p >= ' ' && *p < '\177' ? "%c" : "\\%03o"), *p);
620 fprintf(stderr, "'\n"); 611 fprintf(stderr, "'\n");
621 } 612 }
622#endif /* DEBUG_CMD */ 613#endif /* DEBUG_CMD */
623 rxvt_tt_write(aR_ kbuf, (unsigned int)len); 614 R->tt_write(kbuf, (unsigned int)len);
624} 615}
625/*}}} */ 616/*}}} */
626 617
627#if (MENUBAR_MAX) 618#if (MENUBAR_MAX)
628/*{{{ rxvt_cmd_write(), rxvt_cmd_getc() */ 619/*{{{ rxvt_cmd_write(), rxvt_cmd_getc() */
… …
654 R->cmdbuf_ptr = cmdbuf_ptr; 645 R->cmdbuf_ptr = cmdbuf_ptr;
655 R->cmdbuf_endp = cmdbuf_endp; 646 R->cmdbuf_endp = cmdbuf_endp;
656 return 0; 647 return 0;
657} 648}
658#endif /* MENUBAR_MAX */ 649#endif /* MENUBAR_MAX */
650
651void
652rxvt_term::flush ()
653{
654#ifdef TRANSPARENT
655 if (want_full_refresh)
656 {
657 want_full_refresh = 0;
658 rxvt_scr_clear (this);
659 rxvt_scr_touch (this, False);
660 want_refresh = 1;
661 }
662#endif
663
664 if (want_refresh)
665 {
666 rxvt_scr_refresh (this, refresh_type);
667 rxvt_scrollbar_show (this, 1);
668#ifdef USE_XIM
669 rxvt_IMSendSpot (this);
670#endif
671 }
672
673 XFlush (Xdisplay);
674#if 0
675 if (XPending (Xdisplay)) process_x_events ();
676 if (XPending (Xdisplay)) process_x_events ();
677#endif
678}
679
680void
681rxvt_term::check_cb (check_watcher &w)
682{
683 SET_R (this);
684
685 flush ();
686}
659 687
660void 688void
661rxvt_term::process_x_events () 689rxvt_term::process_x_events ()
662{ 690{
663 do 691 do
… …
709 SET_R (this); 737 SET_R (this);
710 738
711 w.at += BLINK_INTERVAL; 739 w.at += BLINK_INTERVAL;
712 hidden_cursor = !hidden_cursor; 740 hidden_cursor = !hidden_cursor;
713 want_refresh = 1; 741 want_refresh = 1;
714 flush ();
715} 742}
716 743
717void 744void
718rxvt_term::x_cb (io_watcher &w, short revents) 745rxvt_term::x_cb (io_watcher &w, short revents)
719{ 746{
720 SET_R (this); 747 SET_R (this);
721 748
722 process_x_events (); 749 process_x_events ();
750}
723 751
724 flush (); 752bool
753rxvt_term::pty_fill ()
754{
755 ssize_t n = cmdbuf_endp - cmdbuf_ptr;
756
757 memmove (cmdbuf_base, cmdbuf_ptr, n);
758 cmdbuf_ptr = cmdbuf_base;
759 cmdbuf_endp = cmdbuf_ptr + n;
760
761 n = read (cmd_fd, cmdbuf_endp, BUFSIZ - n);
762
763 if (n > 0)
764 {
765 cmdbuf_endp += n;
766 return true;
767 }
768 else if (n < 0 && errno != EAGAIN)
769 destroy ();
770
771 return false;
772}
773
774void
775rxvt_term::pty_cb (io_watcher &w, short revents)
776{
777 SET_R (this);
778
779 if (revents & EVENT_WRITE)
780 tt_write (0, 0);
781 else if (revents & EVENT_READ)
782 {
783 bool flag = true;
784
785 // loop, but don't allow a single term to monopolize us
786 // the number of loops is fully arbitrary, and thus wrong
787 while (flag && pty_fill ())
788 {
789 if (!seen_input)
790 {
791 seen_input = 1;
792 /* once we know the shell is running, send the screen size. Again! */
793 tt_winch ();
794 }
795
796 uint32_t ch = NOCHAR;
797
798 for (;;)
799 {
800 if (ch == NOCHAR)
801 ch = next_char ();
802
803 if (ch == NOCHAR) // TODO: improve
804 break;
805
806 if (ch >= ' ' || ch == '\t' || ch == '\n' || ch == '\r')
807 {
808 /* Read a text string from the input buffer */
809 uint32_t buf[BUFSIZ];
810 bool refreshnow = false;
811 int nlines = 0;
812 uint32_t *str = buf;
813
814 *str++ = ch;
815
816 for (;;)
817 {
818 ch = next_char ();
819
820 if (ch == NOCHAR || (ch < ' ' && ch != '\t' && ch != '\n' && ch != '\r'))
821 break;
822 else
823 {
824 *str++ = ch;
825
826 if (ch == '\n')
827 {
828 nlines++;
829 refresh_count++;
830
831 if (!(Options & Opt_jumpScroll)
832 || (refresh_count >= (refresh_limit * (TermWin.nrow - 1))))
833 {
834 refreshnow = true;
835 flag = false;
836 ch = NOCHAR;
837 break;
838 }
839 }
840
841 if (str >= buf + BUFSIZ)
842 {
843 ch = NOCHAR;
844 break;
845 }
846 }
847 }
848
849 rxvt_scr_add_lines (this, buf, nlines, str - buf);
850
851 /*
852 * If there have been a lot of new lines, then update the screen
853 * What the heck I'll cheat and only refresh less than every page-full.
854 * the number of pages between refreshes is refresh_limit, which
855 * is incremented here because we must be doing flat-out scrolling.
856 *
857 * refreshing should be correct for small scrolls, because of the
858 * time-out
859 */
860 if (refreshnow)
861 {
862 if ((Options & Opt_jumpScroll) && refresh_limit < REFRESH_PERIOD)
863 refresh_limit++;
864
865 rxvt_scr_refresh (this, refresh_type);
866 }
867
868 }
869 else
870 {
871 switch (ch)
872 {
873 default:
874 rxvt_process_nonprinting (this, ch);
875 break;
876 case C0_ESC: /* escape char */
877 rxvt_process_escape_seq (this);
878 break;
879 /*case 0x9b: */ /* CSI */
880 /* rxvt_process_csi_seq (this); */
881 }
882
883 ch = NOCHAR;
884 }
885 }
886 }
887 }
725} 888}
726 889
727// read the next character, currently handles UTF-8 890// read the next character, currently handles UTF-8
728// will probably handle all sorts of other stuff in the future 891// will probably handle all sorts of other stuff in the future
729uint32_t 892uint32_t
… …
777 } 940 }
778 941
779 return NOCHAR; 942 return NOCHAR;
780} 943}
781 944
782bool
783rxvt_term::pty_fill ()
784{
785 ssize_t n = cmdbuf_endp - cmdbuf_ptr;
786
787 memmove (cmdbuf_base, cmdbuf_ptr, n);
788 cmdbuf_ptr = cmdbuf_base;
789 cmdbuf_endp = cmdbuf_ptr + n;
790
791 n = read (cmd_fd, cmdbuf_endp, BUFSIZ - n);
792
793 if (n > 0)
794 {
795 cmdbuf_endp += n;
796 return true;
797 }
798 else if (n < 0 && errno == EAGAIN)
799 return false;
800
801 destroy ();
802}
803
804void
805rxvt_term::pty_cb (io_watcher &w, short revents)
806{
807 SET_R (this);
808
809 // loop, but don't allow a single term to monopolize us
810 // the number of loops is fully arbitrary, and thus wrong
811 for (int i = 7; i-- && pty_fill (); )
812 {
813 //TODO:
814 /* once we know the shell is running, send the screen size. Again! */
815 //ch = rxvt_cmd_getc(aR); /* wait for something */
816 //rxvt_tt_winsize(cmd_fd, TermWin.ncol, TermWin.nrow, cmd_pid);
817
818 uint32_t ch = NOCHAR;
819
820 for (;;)
821 {
822 if (ch == NOCHAR)
823 ch = next_char ();
824
825 if (ch == NOCHAR) // TODO: improve
826 break;
827
828 if (ch >= ' ' || ch == '\t' || ch == '\n' || ch == '\r')
829 {
830 /* Read a text string from the input buffer */
831 uint32_t buf[BUFSIZ];
832 bool refreshnow = false;
833 int nlines = 0;
834 uint32_t *str = buf;
835
836 *str++ = ch;
837
838 for (;;)
839 {
840 ch = next_char ();
841
842 if (ch == NOCHAR || (ch < ' ' && ch != '\t' && ch != '\n' && ch != '\r'))
843 break;
844 else
845 {
846 *str++ = ch;
847
848 if (ch == '\n')
849 {
850 nlines++;
851 refresh_count++;
852
853 if (!(Options & Opt_jumpScroll)
854 || (refresh_count >= (refresh_limit * (TermWin.nrow - 1))))
855 {
856 refreshnow = true;
857 ch = NOCHAR;
858 break;
859 }
860 }
861
862 if (str >= buf + BUFSIZ)
863 {
864 ch = NOCHAR;
865 break;
866 }
867 }
868 }
869
870 rxvt_scr_add_lines (this, buf, nlines, str - buf);
871
872 /*
873 * If there have been a lot of new lines, then update the screen
874 * What the heck I'll cheat and only refresh less than every page-full.
875 * the number of pages between refreshes is refresh_limit, which
876 * is incremented here because we must be doing flat-out scrolling.
877 *
878 * refreshing should be correct for small scrolls, because of the
879 * time-out
880 */
881 if (refreshnow)
882 {
883 if ((Options & Opt_jumpScroll) && refresh_limit < REFRESH_PERIOD)
884 refresh_limit++;
885
886 rxvt_scr_refresh (this, refresh_type);
887 }
888
889 }
890 else
891 {
892 switch (ch)
893 {
894 default:
895 rxvt_process_nonprinting (this, ch);
896 break;
897 case C0_ESC: /* escape char */
898 rxvt_process_escape_seq (this);
899 break;
900 /*case 0x9b: */ /* CSI */
901 /* rxvt_process_csi_seq (this); */
902 }
903
904 ch = NOCHAR;
905 }
906 }
907 }
908
909 flush ();
910}
911
912void
913rxvt_term::flush ()
914{
915#ifdef TRANSPARENT
916 if (want_full_refresh)
917 {
918 want_full_refresh = 0;
919 rxvt_scr_clear (this);
920 rxvt_scr_touch (this, False);
921 want_refresh = 1;
922 }
923#endif
924
925 if (want_refresh)
926 {
927 rxvt_scr_refresh (this, refresh_type);
928 rxvt_scrollbar_show (this, 1);
929#ifdef USE_XIM
930 rxvt_IMSendSpot (this);
931#endif
932 }
933
934 if (XPending (Xdisplay)) process_x_events ();
935 XFlush (Xdisplay);
936 if (XPending (Xdisplay)) process_x_events ();
937}
938
939/* rxvt_cmd_getc() - Return next input character */ 945/* rxvt_cmd_getc() - Return next input character */
940/* 946/*
941 * Return the next input character after first passing any keyboard input 947 * Return the next input character after first passing any keyboard input
942 * to the command. 948 * to the command.
943 */ 949 */
… …
970 976
971 for (;;) { 977 for (;;) {
972 /* loop until we can return something */ 978 /* loop until we can return something */
973 979
974 if (R->v_bufstr < R->v_bufptr) /* output any pending chars */ 980 if (R->v_bufstr < R->v_bufptr) /* output any pending chars */
975 rxvt_tt_write(aR_ NULL, 0); 981 R->tt_write(NULL, 0);
976 982
977#if defined(MOUSE_WHEEL) && defined(MOUSE_SLIP_WHEELING) 983#if defined(MOUSE_WHEEL) && defined(MOUSE_SLIP_WHEELING)
978 if (R->mouse_slip_wheel_speed) { 984 if (R->mouse_slip_wheel_speed) {
979 quick_timeout = 1; 985 quick_timeout = 1;
980 if (!R->mouse_slip_wheel_delay-- 986 if (!R->mouse_slip_wheel_delay--
… …
1113 fprintf(stderr, "]: <%d>, %d/%d\n", 1119 fprintf(stderr, "]: <%d>, %d/%d\n",
1114 button_number, 1120 button_number,
1115 x + 1, 1121 x + 1,
1116 y + 1); 1122 y + 1);
1117#else 1123#else
1118 rxvt_tt_printf(aR_ "\033[M%c%c%c", 1124 R->tt_printf("\033[M%c%c%c",
1119 (32 + button_number + key_state), 1125 (32 + button_number + key_state),
1120 (32 + x + 1), 1126 (32 + x + 1),
1121 (32 + y + 1)); 1127 (32 + y + 1));
1122#endif 1128#endif
1123} 1129}
… …
1140{ 1146{
1141 int i, want_timeout; 1147 int i, want_timeout;
1142 Window unused_root, unused_child; 1148 Window unused_root, unused_child;
1143 int unused_root_x, unused_root_y; 1149 int unused_root_x, unused_root_y;
1144 unsigned int unused_mask; 1150 unsigned int unused_mask;
1145 struct timeval tp;
1146 1151
1147#ifdef DEBUG_X 1152#ifdef DEBUG_X
1148 const char *const eventnames[] = 1153 const char *const eventnames[] =
1149 { /* mason - this matches my system */ 1154 { /* mason - this matches my system */
1150 "", 1155 "",
… …
1181 "SelectionNotify", 1186 "SelectionNotify",
1182 "ColormapNotify", 1187 "ColormapNotify",
1183 "ClientMessage", 1188 "ClientMessage",
1184 "MappingNotify" 1189 "MappingNotify"
1185 }; 1190 };
1191#endif
1192
1193#ifdef DEBUG_X
1194 struct timeval tp;
1186 struct tm *ltt; 1195 struct tm *ltt;
1187#endif
1188
1189 /*
1190 * check if we need to get the time for any timeouts
1191 */
1192
1193 for (i = NUM_TIMEOUTS; i--; )
1194 if (R->timeout[i].tv_sec) {
1195 want_timeout = 1;
1196 break;
1197 }
1198
1199#ifndef DEBUG_X
1200 if (want_timeout)
1201#endif
1202 (void)gettimeofday(&tp, NULL); 1196 (void)gettimeofday(&tp, NULL);
1203
1204#ifdef DEBUG_X
1205 ltt = localtime(&(tp.tv_sec)); 1197 ltt = localtime(&(tp.tv_sec));
1206 D_X((stderr, "Event: %-16s %-7s %08lx (%4d-%02d-%02d %02d:%02d:%02d.%.6ld) %s %lu", eventnames[ev->type], (ev->xany.window == R->TermWin.parent[0] ? "parent" : (ev->xany.window == R->TermWin.vt ? "vt" : (ev->xany.window == R->scrollBar.win ? "scroll" : (ev->xany.window == R->menuBar.win ? "menubar" : "UNKNOWN")))), (ev->xany.window == R->TermWin.parent[0] ? R->TermWin.parent[0] : (ev->xany.window == R->TermWin.vt ? R->TermWin.vt : (ev->xany.window == R->scrollBar.win ? R->scrollBar.win : (ev->xany.window == R->menuBar.win ? R->menuBar.win : 0)))), ltt->tm_year + 1900, ltt->tm_mon + 1, ltt->tm_mday, ltt->tm_hour, ltt->tm_min, ltt->tm_sec, tp.tv_usec, ev->xany.send_event ? "S" : " ", ev->xany.serial)); 1198 D_X((stderr, "Event: %-16s %-7s %08lx (%4d-%02d-%02d %02d:%02d:%02d.%.6ld) %s %lu", eventnames[ev->type], (ev->xany.window == R->TermWin.parent[0] ? "parent" : (ev->xany.window == R->TermWin.vt ? "vt" : (ev->xany.window == R->scrollBar.win ? "scroll" : (ev->xany.window == R->menuBar.win ? "menubar" : "UNKNOWN")))), (ev->xany.window == R->TermWin.parent[0] ? R->TermWin.parent[0] : (ev->xany.window == R->TermWin.vt ? R->TermWin.vt : (ev->xany.window == R->scrollBar.win ? R->scrollBar.win : (ev->xany.window == R->menuBar.win ? R->menuBar.win : 0)))), ltt->tm_year + 1900, ltt->tm_mon + 1, ltt->tm_mday, ltt->tm_hour, ltt->tm_min, ltt->tm_sec, tp.tv_usec, ev->xany.send_event ? "S" : " ", ev->xany.serial));
1207#endif 1199#endif
1208
1209 /* X event timeouts */
1210 if (want_timeout)
1211 for (i = NUM_TIMEOUTS; i--; ) {
1212 if (R->timeout[i].tv_sec == 0)
1213 continue;
1214 if ((tp.tv_sec < R->timeout[i].tv_sec)
1215 || (tp.tv_sec == R->timeout[i].tv_sec
1216 && tp.tv_usec < R->timeout[i].tv_usec))
1217 continue;
1218 R->timeout[i].tv_sec = 0;
1219 switch(i) {
1220 case TIMEOUT_INCR:
1221 rxvt_print_error("data loss: timeout on INCR selection paste");
1222 R->selection_wait = Sel_none;
1223 break;
1224 default:
1225 break;
1226 }
1227 }
1228 1200
1229 switch (ev->type) { 1201 switch (ev->type) {
1230 case KeyPress: 1202 case KeyPress:
1231 rxvt_lookup_key(aR_ (XKeyEvent *)ev); 1203 rxvt_lookup_key(aR_ (XKeyEvent *)ev);
1232 break; 1204 break;
… …
1665 */ 1637 */
1666 if ((R->scrollBar.style == R_SB_NEXT 1638 if ((R->scrollBar.style == R_SB_NEXT
1667 && scrollbarnext_upButton(ev->y)) 1639 && scrollbarnext_upButton(ev->y))
1668 || (R->scrollBar.style == R_SB_RXVT 1640 || (R->scrollBar.style == R_SB_RXVT
1669 && scrollbarrxvt_upButton(ev->y))) 1641 && scrollbarrxvt_upButton(ev->y)))
1670 rxvt_tt_printf(aR_ "\033[A"); 1642 R->tt_printf("\033[A");
1671 else if ((R->scrollBar.style == R_SB_NEXT 1643 else if ((R->scrollBar.style == R_SB_NEXT
1672 && scrollbarnext_dnButton(ev->y)) 1644 && scrollbarnext_dnButton(ev->y))
1673 || (R->scrollBar.style == R_SB_RXVT 1645 || (R->scrollBar.style == R_SB_RXVT
1674 && scrollbarrxvt_dnButton(ev->y))) 1646 && scrollbarrxvt_dnButton(ev->y)))
1675 rxvt_tt_printf(aR_ "\033[B"); 1647 R->tt_printf("\033[B");
1676 else 1648 else
1677 switch (ev->button) { 1649 switch (ev->button) {
1678 case Button2: 1650 case Button2:
1679 rxvt_tt_printf(aR_ "\014"); 1651 R->tt_printf("\014");
1680 break; 1652 break;
1681 case Button1: 1653 case Button1:
1682 rxvt_tt_printf(aR_ "\033[6~"); 1654 R->tt_printf("\033[6~");
1683 break; 1655 break;
1684 case Button3: 1656 case Button3:
1685 rxvt_tt_printf(aR_ "\033[5~"); 1657 R->tt_printf("\033[5~");
1686 break; 1658 break;
1687 } 1659 }
1688 } 1660 }
1689 else 1661 else
1690#endif /* NO_SCROLLBAR_REPORT */ 1662#endif /* NO_SCROLLBAR_REPORT */
… …
2091 return stream; 2063 return stream;
2092} 2064}
2093 2065
2094/* EXTPROTO */ 2066/* EXTPROTO */
2095int 2067int
2096rxvt_pclose_printer(FILE *stream) 2068rxvt_pclose_printer (FILE *stream)
2097{ 2069{
2098 fflush(stream); 2070 fflush (stream);
2099/* pclose() reported not to work on SunOS 4.1.3 */ 2071/* pclose() reported not to work on SunOS 4.1.3 */
2100# if defined (__sun__) /* TODO: RESOLVE THIS */ 2072# if defined (__sun__) /* TODO: RESOLVE THIS */
2101/* pclose works provided SIGCHLD handler uses waitpid */ 2073/* pclose works provided SIGCHLD handler uses waitpid */
2102 return pclose(stream); /* return fclose (stream); */ 2074 return pclose (stream); /* return fclose (stream); */
2103# else 2075# else
2104 return pclose(stream); 2076 return pclose (stream);
2105# endif 2077# endif
2106} 2078}
2107 2079
2108/* 2080/*
2109 * simulate attached vt100 printer 2081 * simulate attached vt100 printer
… …
2172rxvt_process_nonprinting(pR_ unsigned char ch) 2144rxvt_process_nonprinting(pR_ unsigned char ch)
2173{ 2145{
2174 switch (ch) { 2146 switch (ch) {
2175 case C0_ENQ: /* terminal Status */ 2147 case C0_ENQ: /* terminal Status */
2176 if (R->rs[Rs_answerbackstring]) 2148 if (R->rs[Rs_answerbackstring])
2177 rxvt_tt_write(aR_ 2149 R->tt_write(
2178 (const unsigned char *)R->rs[Rs_answerbackstring], 2150 (const unsigned char *)R->rs[Rs_answerbackstring],
2179 (unsigned int)STRLEN(R->rs[Rs_answerbackstring])); 2151 (unsigned int)STRLEN(R->rs[Rs_answerbackstring]));
2180 else 2152 else
2181 rxvt_tt_write(aR_ (unsigned char *)VT100_ANS, 2153 R->tt_write((unsigned char *)VT100_ANS,
2182 (unsigned int)STRLEN(VT100_ANS)); 2154 (unsigned int)STRLEN(VT100_ANS));
2183 break; 2155 break;
2184 case C0_BEL: /* bell */ 2156 case C0_BEL: /* bell */
2185 rxvt_scr_bell(aR); 2157 rxvt_scr_bell(aR);
2186 break; 2158 break;
… …
2249 row = rxvt_cmd_getc(aR) - ' '; 2221 row = rxvt_cmd_getc(aR) - ' ';
2250 col = rxvt_cmd_getc(aR) - ' '; 2222 col = rxvt_cmd_getc(aR) - ' ';
2251 rxvt_scr_gotorc(aR_ row, col, 0); 2223 rxvt_scr_gotorc(aR_ row, col, 0);
2252 break; 2224 break;
2253 case 'Z': /* identify the terminal type */ 2225 case 'Z': /* identify the terminal type */
2254 rxvt_tt_printf(aR_ "\033/Z"); /* I am a VT100 emulating a VT52 */ 2226 R->tt_printf("\033/Z"); /* I am a VT100 emulating a VT52 */
2255 break; 2227 break;
2256 case '<': /* turn off VT52 mode */ 2228 case '<': /* turn off VT52 mode */
2257 PrivMode(0, PrivMode_vt52); 2229 PrivMode(0, PrivMode_vt52);
2258 break; 2230 break;
2259 case 'F': /* use special graphics character set */ 2231 case 'F': /* use special graphics character set */
… …
2366 rxvt_process_dcs_seq(aR); 2338 rxvt_process_dcs_seq(aR);
2367 break; 2339 break;
2368 2340
2369 /* 8.3.110: SINGLE CHARACTER INTRODUCER */ 2341 /* 8.3.110: SINGLE CHARACTER INTRODUCER */
2370 case C1_SCI: /* ESC Z */ 2342 case C1_SCI: /* ESC Z */
2371 rxvt_tt_write(aR_ (const unsigned char *)ESCZ_ANSWER, 2343 R->tt_write((const unsigned char *)ESCZ_ANSWER,
2372 (unsigned int)(sizeof(ESCZ_ANSWER) - 1)); 2344 (unsigned int)(sizeof(ESCZ_ANSWER) - 1));
2373 break; /* steal obsolete ESC [ c */ 2345 break; /* steal obsolete ESC [ c */
2374 2346
2375 /* 8.3.16: CONTROL SEQUENCE INTRODUCER */ 2347 /* 8.3.16: CONTROL SEQUENCE INTRODUCER */
2376 case C1_CSI: /* ESC [ */ 2348 case C1_CSI: /* ESC [ */
… …
2497 */ 2469 */
2498 if (priv) { 2470 if (priv) {
2499 switch (priv) { 2471 switch (priv) {
2500 case '>': 2472 case '>':
2501 if (ch == CSI_DA) /* secondary device attributes */ 2473 if (ch == CSI_DA) /* secondary device attributes */
2502 rxvt_tt_printf(aR_ "\033[>%d;%-.8s;0c", 'R', VSTRING); 2474 R->tt_printf("\033[>%d;%-.8s;0c", 'R', VSTRING);
2503 break; 2475 break;
2504 case '?': 2476 case '?':
2505 if (ch == 'h' || ch == 'l' || ch == 'r' || ch == 's' || ch == 't') 2477 if (ch == 'h' || ch == 'l' || ch == 'r' || ch == 's' || ch == 't')
2506 rxvt_process_terminal_mode(aR_ ch, priv, nargs, arg); 2478 rxvt_process_terminal_mode(aR_ ch, priv, nargs, arg);
2507 break; 2479 break;
… …
2610 2582
2611 case CSI_SD: /* 8.3.114: (1) SCROLL DOWN */ 2583 case CSI_SD: /* 8.3.114: (1) SCROLL DOWN */
2612 arg[0] = -arg[0]; 2584 arg[0] = -arg[0];
2613 /* FALLTHROUGH */ 2585 /* FALLTHROUGH */
2614 case CSI_SU: /* 8.3.148: (1) SCROLL UP */ 2586 case CSI_SU: /* 8.3.148: (1) SCROLL UP */
2615 rxvt_scroll_text(aR_ R->screen.tscroll, R->screen.bscroll, arg[0], 0); 2587 R->scr_scroll_text (R->screen.tscroll, R->screen.bscroll, arg[0], 0);
2616 break; 2588 break;
2617 2589
2618 case CSI_DA: /* 8.3.24: (0) DEVICE ATTRIBUTES */ 2590 case CSI_DA: /* 8.3.24: (0) DEVICE ATTRIBUTES */
2619 rxvt_tt_write(aR_ (const unsigned char *)VT100_ANS, 2591 R->tt_write((const unsigned char *)VT100_ANS,
2620 (unsigned int)(sizeof(VT100_ANS) - 1)); 2592 (unsigned int)(sizeof(VT100_ANS) - 1));
2621 break; 2593 break;
2622 2594
2623 case CSI_SGR: /* 8.3.118: (0) SELECT GRAPHIC RENDITION */ 2595 case CSI_SGR: /* 8.3.118: (0) SELECT GRAPHIC RENDITION */
2624 rxvt_process_sgr_mode(aR_ nargs, arg); 2596 rxvt_process_sgr_mode(aR_ nargs, arg);
2625 break; 2597 break;
2626 2598
2627 case CSI_DSR: /* 8.3.36: (0) DEVICE STATUS REPORT */ 2599 case CSI_DSR: /* 8.3.36: (0) DEVICE STATUS REPORT */
2628 switch (arg[0]) { 2600 switch (arg[0]) {
2629 case 5: /* DSR requested */ 2601 case 5: /* DSR requested */
2630 rxvt_tt_printf(aR_ "\033[0n"); 2602 R->tt_printf("\033[0n");
2631 break; 2603 break;
2632 case 6: /* CPR requested */ 2604 case 6: /* CPR requested */
2633 rxvt_scr_report_position(aR); 2605 rxvt_scr_report_position(aR);
2634 break; 2606 break;
2635#if defined (ENABLE_DISPLAY_ANSWER) 2607#if defined (ENABLE_DISPLAY_ANSWER)
2636 case 7: /* unofficial extension */ 2608 case 7: /* unofficial extension */
2637 rxvt_tt_printf(aR_ "%-.250s\n", R->rs[Rs_display_name]); 2609 R->tt_printf("%-.250s\n", R->rs[Rs_display_name]);
2638 break; 2610 break;
2639#endif 2611#endif
2640 case 8: /* unofficial extension */ 2612 case 8: /* unofficial extension */
2641 rxvt_xterm_seq(aR_ XTerm_title, APL_NAME "-" VERSION, CHAR_ST); 2613 rxvt_xterm_seq(aR_ XTerm_title, APL_NAME "-" VERSION, CHAR_ST);
2642 break; 2614 break;
… …
2711 break; 2683 break;
2712#endif 2684#endif
2713 2685
2714 case CSI_78: /* DECREQTPARM */ 2686 case CSI_78: /* DECREQTPARM */
2715 if (arg[0] == 0 || arg[0] == 1) 2687 if (arg[0] == 0 || arg[0] == 1)
2716 rxvt_tt_printf(aR_ "\033[%d;1;1;112;112;1;0x", arg[0] + 2); 2688 R->tt_printf("\033[%d;1;1;112;112;1;0x", arg[0] + 2);
2717 /* FALLTHROUGH */ 2689 /* FALLTHROUGH */
2718 2690
2719 default: 2691 default:
2720 break; 2692 break;
2721 } 2693 }
… …
2775 /* 2747 /*
2776 * reports - some output format copied from XTerm 2748 * reports - some output format copied from XTerm
2777 */ 2749 */
2778 case 11: /* report window state */ 2750 case 11: /* report window state */
2779 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr); 2751 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr);
2780 rxvt_tt_printf(aR_ "\033[%dt", wattr.map_state == IsViewable ? 1 : 2); 2752 R->tt_printf("\033[%dt", wattr.map_state == IsViewable ? 1 : 2);
2781 break; 2753 break;
2782 case 13: /* report window position */ 2754 case 13: /* report window position */
2783 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr); 2755 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr);
2784 XTranslateCoordinates(R->Xdisplay, R->TermWin.parent[0], wattr.root, 2756 XTranslateCoordinates(R->Xdisplay, R->TermWin.parent[0], wattr.root,
2785 -wattr.border_width, -wattr.border_width, 2757 -wattr.border_width, -wattr.border_width,
2786 &x, &y, &wdummy); 2758 &x, &y, &wdummy);
2787 rxvt_tt_printf(aR_ "\033[3;%d;%dt", x, y); 2759 R->tt_printf("\033[3;%d;%dt", x, y);
2788 break; 2760 break;
2789 case 14: /* report window size (pixels) */ 2761 case 14: /* report window size (pixels) */
2790 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr); 2762 XGetWindowAttributes(R->Xdisplay, R->TermWin.parent[0], &wattr);
2791 rxvt_tt_printf(aR_ "\033[4;%d;%dt", wattr.height, wattr.width); 2763 R->tt_printf("\033[4;%d;%dt", wattr.height, wattr.width);
2792 break; 2764 break;
2793 case 18: /* report window size (chars) */ 2765 case 18: /* report window size (chars) */
2794 rxvt_tt_printf(aR_ "\033[8;%d;%dt", R->TermWin.nrow, R->TermWin.ncol); 2766 R->tt_printf("\033[8;%d;%dt", R->TermWin.nrow, R->TermWin.ncol);
2795 break; 2767 break;
2796#if 0 /* XXX: currently disabled due to security concerns */ 2768#if 0 /* XXX: currently disabled due to security concerns */
2797 case 20: /* report icon label */ 2769 case 20: /* report icon label */
2798 XGetIconName(R->Xdisplay, R->TermWin.parent[0], &s); 2770 XGetIconName(R->Xdisplay, R->TermWin.parent[0], &s);
2799 rxvt_tt_printf(aR_ "\033]L%-.200s\234", s ? s : ""); /* 8bit ST */ 2771 R->tt_printf("\033]L%-.200s\234", s ? s : ""); /* 8bit ST */
2800 break; 2772 break;
2801 case 21: /* report window title */ 2773 case 21: /* report window title */
2802 XFetchName(R->Xdisplay, R->TermWin.parent[0], &s); 2774 XFetchName(R->Xdisplay, R->TermWin.parent[0], &s);
2803 rxvt_tt_printf(aR_ "\033]l%-.200s\234", s ? s : ""); /* 8bit ST */ 2775 R->tt_printf("\033]l%-.200s\234", s ? s : ""); /* 8bit ST */
2804 break; 2776 break;
2805#endif 2777#endif
2806 } 2778 }
2807} 2779}
2808#endif 2780#endif
… …
3351{ 3323{
3352 unsigned char ch, cmd = rxvt_cmd_getc(aR); 3324 unsigned char ch, cmd = rxvt_cmd_getc(aR);
3353 3325
3354#ifndef RXVT_GRAPHICS 3326#ifndef RXVT_GRAPHICS
3355 if (cmd == 'Q') { /* query graphics */ 3327 if (cmd == 'Q') { /* query graphics */
3356 rxvt_tt_printf(aR_ "\033G0\n"); /* no graphics */ 3328 R->tt_printf("\033G0\n"); /* no graphics */
3357 return; 3329 return;
3358 } 3330 }
3359/* swallow other graphics sequences until terminating ':' */ 3331/* swallow other graphics sequences until terminating ':' */
3360 do 3332 do
3361 ch = rxvt_cmd_getc(aR); 3333 ch = rxvt_cmd_getc(aR);
… …
3364 unsigned int nargs; 3336 unsigned int nargs;
3365 int args[NGRX_PTS]; 3337 int args[NGRX_PTS];
3366 unsigned char *text = NULL; 3338 unsigned char *text = NULL;
3367 3339
3368 if (cmd == 'Q') { /* query graphics */ 3340 if (cmd == 'Q') { /* query graphics */
3369 rxvt_tt_printf(aR_ "\033G1\n"); /* yes, graphics (color) */ 3341 R->tt_printf("\033G1\n"); /* yes, graphics (color) */
3370 return; 3342 return;
3371 } 3343 }
3372 for (nargs = 0; nargs < (sizeof(args) / sizeof(args[0])) - 1;) { 3344 for (nargs = 0; nargs < (sizeof(args) / sizeof(args[0])) - 1;) {
3373 int neg; 3345 int neg;
3374 3346
… …
3408 3380
3409/* 3381/*
3410 * Send printf() formatted output to the command. 3382 * Send printf() formatted output to the command.
3411 * Only use for small amounts of data. 3383 * Only use for small amounts of data.
3412 */ 3384 */
3413/* EXTPROTO */
3414void 3385void
3415rxvt_tt_printf(pR_ const char *fmt,...) 3386rxvt_term::tt_printf (const char *fmt,...)
3416{ 3387{
3417 va_list arg_ptr; 3388 va_list arg_ptr;
3418 unsigned char buf[256]; 3389 unsigned char buf[256];
3419 3390
3420 va_start(arg_ptr, fmt); 3391 va_start (arg_ptr, fmt);
3421 vsprintf((char *)buf, fmt, arg_ptr); 3392 vsnprintf ((char *)buf, 256, fmt, arg_ptr);
3422 va_end(arg_ptr); 3393 va_end (arg_ptr);
3423 rxvt_tt_write(aR_ buf, (unsigned int)STRLEN(buf)); 3394 tt_write (buf, STRLEN (buf));
3424} 3395}
3425 3396
3426/* ---------------------------------------------------------------------- */ 3397/* ---------------------------------------------------------------------- */
3427/* Addresses pasting large amounts of data and rxvt hang
3428 * code pinched from xterm (v_write()) and applied originally to
3429 * rxvt-2.18 - Hops
3430 * Write data to the pty as typed by the user, pasted with the mouse, 3398/* Write data to the pty as typed by the user, pasted with the mouse,
3431 * or generated by us in response to a query ESC sequence. 3399 * or generated by us in response to a query ESC sequence.
3432 */ 3400 */
3433/* EXTPROTO */
3434void 3401void
3435rxvt_tt_write(pR_ const unsigned char *d, unsigned int len) 3402rxvt_term::tt_write (const unsigned char *data, unsigned int len)
3436{ 3403{
3437#define MAX_PTY_WRITE 256 /* POSIX minimum MAX_INPUT */ 3404 enum { MAX_PTY_WRITE = 255 }; // minimum MAX_INPUT
3438 int riten;
3439 unsigned int p;
3440 unsigned char *v_buffer, /* start of physical buffer */
3441 *v_bufstr, /* start of current buffer pending */
3442 *v_bufptr, /* end of current buffer pending */
3443 *v_bufend; /* end of physical buffer */
3444 3405
3445 if (R->v_bufstr == NULL && len > 0) { 3406 if (len)
3446 p = (len / MAX_PTY_WRITE + 1) * MAX_PTY_WRITE;
3447 v_buffer = v_bufstr = v_bufptr = (unsigned char *)rxvt_malloc(p);
3448 v_bufend = v_buffer + p;
3449 } else {
3450 v_buffer = R->v_buffer;
3451 v_bufstr = R->v_bufstr;
3452 v_bufptr = R->v_bufptr;
3453 v_bufend = R->v_bufend;
3454 } 3407 {
3408 if (v_buflen == 0)
3409 {
3410 int written = write (cmd_fd, data, min (MAX_PTY_WRITE, len));
3411 if (written == len)
3412 return;
3455 3413
3456 /* 3414 data += written;
3457 * Append to the block we already have. Always doing this simplifies the 3415 len -= written;
3458 * code, and isn't too bad, either. If this is a short block, it isn't 3416 }
3459 * too expensive, and if this is a long block, we won't be able to write 3417
3460 * it all anyway. 3418
3461 */ 3419 v_buffer = (unsigned char *)realloc (v_buffer, v_buflen + len);
3462 if (len > 0) { 3420
3463 if (v_bufend < v_bufptr + len) { /* run out of room */ 3421 memcpy (v_buffer + v_buflen, data, len);
3464 if (v_bufstr != v_buffer) { 3422 v_buflen += len;
3465 /* there is unused space, move everything down */
3466 MEMMOVE(v_buffer, v_bufstr,
3467 (unsigned int)(v_bufptr - v_bufstr));
3468 v_bufptr -= v_bufstr - v_buffer;
3469 v_bufstr = v_buffer;
3470 } 3423 }
3471 if (v_bufend < v_bufptr + len) {
3472 /* still won't fit: get more space */
3473 /* use most basic realloc because an error is not fatal. */
3474 unsigned int size = v_bufptr - v_buffer;
3475 unsigned int reallocto;
3476 3424
3477 reallocto = ((size + len) / MAX_PTY_WRITE + 1) * MAX_PTY_WRITE; 3425 for (;;)
3478 v_buffer = (unsigned char *)realloc(v_buffer, reallocto); 3426 {
3479 /* save across realloc */ 3427 int written = write (cmd_fd, v_buffer, min (MAX_PTY_WRITE, v_buflen));
3480 if (v_buffer) { 3428
3481 v_bufstr = v_buffer; 3429 if (written > 0)
3482 v_bufptr = v_buffer + size; 3430 {
3483 v_bufend = v_buffer + reallocto; 3431 v_buflen -= written;
3484 } else { /* no memory: ignore entire write request */ 3432
3485 rxvt_print_error("data loss: cannot allocate buffer space"); 3433 if (v_buflen == 0)
3486 v_buffer = v_bufstr; /* restore clobbered pointer */ 3434 {
3487 } 3435 free (v_buffer);
3436 v_buffer = 0;
3437 v_buflen = 0;
3438
3439 pty_ev.set (EVENT_READ);
3440 return;
3441 }
3442
3443 memmove (v_buffer, v_buffer + written, v_buflen);
3444 }
3445 else if (written != -1 || (errno != EAGAIN && errno != EINTR))
3446 // original code just ignores this...
3447 destroy ();
3448 else
3449 {
3450 pty_ev.set (EVENT_READ | EVENT_WRITE);
3451 return;
3452 }
3488 } 3453 }
3489 }
3490 if (v_bufend >= v_bufptr + len) { /* new stuff will fit */
3491 MEMCPY(v_bufptr, d, len);
3492 v_bufptr += len;
3493 }
3494 }
3495
3496 /*
3497 * Write out as much of the buffer as we can.
3498 * Be careful not to overflow the pty's input silo.
3499 * We are conservative here and only write a small amount at a time.
3500 *
3501 * If we can't push all the data into the pty yet, we expect write
3502 * to return a non-negative number less than the length requested
3503 * (if some data written) or -1 and set errno to EAGAIN,
3504 * EWOULDBLOCK, or EINTR (if no data written).
3505 *
3506 * (Not all systems do this, sigh, so the code is actually
3507 * a little more forgiving.)
3508 */
3509 if ((p = v_bufptr - v_bufstr) > 0) {
3510 riten = write(R->cmd_fd, v_bufstr, min(p, MAX_PTY_WRITE));
3511 if (riten < 0)
3512 riten = 0;
3513 v_bufstr += riten;
3514 if (v_bufstr >= v_bufptr) /* we wrote it all */
3515 v_bufstr = v_bufptr = v_buffer;
3516 }
3517 /*
3518 * If we have lots of unused memory allocated, return it
3519 */
3520 if (v_bufend - v_bufptr > MAX_PTY_WRITE * 8) { /* arbitrary hysteresis */
3521 /* save pointers across realloc */
3522 unsigned int start = v_bufstr - v_buffer;
3523 unsigned int size = v_bufptr - v_buffer;
3524 unsigned int reallocto;
3525
3526 reallocto = (size / MAX_PTY_WRITE + 1) * MAX_PTY_WRITE;
3527 v_buffer = (unsigned char *)realloc(v_buffer, reallocto);
3528 if (v_buffer) {
3529 v_bufstr = v_buffer + start;
3530 v_bufptr = v_buffer + size;
3531 v_bufend = v_buffer + reallocto;
3532 } else {
3533 /* should we print a warning if couldn't return memory? */
3534 v_buffer = v_bufstr - start; /* restore clobbered pointer */
3535 }
3536 }
3537 R->v_buffer = v_buffer;
3538 R->v_bufstr = v_bufstr;
3539 R->v_bufptr = v_bufptr;
3540 R->v_bufend = v_bufend;
3541} 3454}
3455
3542/*----------------------- end-of-file (C source) -----------------------*/ 3456/*----------------------- end-of-file (C source) -----------------------*/
3543 3457

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