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Annotation of 43BSDTahoe/new/X/xterm/tabs.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *     $Source: /u1/X/xterm/RCS/tabs.c,v $
        !             3:  *     $Header: tabs.c,v 10.100 86/12/01 14:45:38 jg Rel $
        !             4:  */
        !             5: 
        !             6: #ifndef lint
        !             7: static char *rcsid_tabs_c = "$Header: tabs.c,v 10.100 86/12/01 14:45:38 jg Rel $";
        !             8: #endif lint
        !             9: 
        !            10: #include <X/mit-copyright.h>
        !            11: 
        !            12: /* Copyright    Massachusetts Institute of Technology    1984  */
        !            13: 
        !            14: /* tabs.c */
        !            15: 
        !            16: #ifndef lint
        !            17: /* @(#)tabs.c       X10/6.6B 12/26/86 */
        !            18: #endif lint
        !            19: 
        !            20: #include <X/Xlib.h>
        !            21: #include "scrollbar.h"
        !            22: #include "ptyx.h"
        !            23: /*
        !            24:  * This file presumes 32bits/word.  This is somewhat of a crock, and should
        !            25:  * be fixed sometime.
        !            26:  */
        !            27: 
        !            28: /*
        !            29:  * places tabstops at only every 8 columns
        !            30:  */
        !            31: TabReset(tabs)
        !            32: Tabs   tabs;
        !            33: {
        !            34:        register int i;
        !            35: 
        !            36:        for (i=0; i<TAB_ARRAY_SIZE; ++i)
        !            37:                tabs[i] = 0;
        !            38: 
        !            39:        for (i=0; i<MAX_TABS; i+=8)
        !            40:                TabSet(tabs, i);
        !            41: }      
        !            42: 
        !            43: 
        !            44: /*
        !            45:  * places a tabstop at col
        !            46:  */
        !            47: TabSet(tabs, col)
        !            48: Tabs   tabs;
        !            49: {
        !            50:        tabs[col >> 5] |= (1 << (col & 31));
        !            51: }
        !            52: 
        !            53: /*
        !            54:  * clears a tabstop at col
        !            55:  */
        !            56: TabClear(tabs, col)
        !            57: Tabs   tabs;
        !            58: {
        !            59:        tabs[col >> 5] &= ~(1 << (col & 31));
        !            60: }
        !            61: 
        !            62: /*
        !            63:  * returns the column of the next tabstop
        !            64:  * (or MAX_TABS - 1 if there are no more).
        !            65:  * A tabstop at col is ignored.
        !            66:  */
        !            67: TabNext (tabs, col)
        !            68: Tabs   tabs;
        !            69: {
        !            70:        extern Terminal term;
        !            71:        register Screen *screen = &term.screen;
        !            72: 
        !            73:        if(screen->curses && screen->do_wrap && (term.flags & WRAPAROUND)) {
        !            74:                Index(screen, 1);
        !            75:                col = screen->cur_col = screen->do_wrap = 0;
        !            76:        }
        !            77:        for (++col; col<MAX_TABS; ++col)
        !            78:                if (tabs[col >> 5] & (1 << (col & 31)))
        !            79:                        return (col);
        !            80: 
        !            81:        return (MAX_TABS - 1);
        !            82: }
        !            83: 
        !            84: /*
        !            85:  * clears all tabs
        !            86:  */
        !            87: TabZonk (tabs)
        !            88: Tabs   tabs;
        !            89: {
        !            90:        register int i;
        !            91: 
        !            92:        for (i=0; i<TAB_ARRAY_SIZE; ++i)
        !            93:                tabs[i] = 0;
        !            94: }

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