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Annotation of 43BSD/contrib/X/xterm/tabs.c, revision 1.1

1.1     ! root        1: #include <X/mit-copyright.h>
        !             2: 
        !             3: /* Copyright    Massachusetts Institute of Technology    1984  */
        !             4: 
        !             5: /* tabs.c */
        !             6: 
        !             7: #ifndef lint
        !             8: static char *rcsid_tabs_c = "$Header: tabs.c,v 10.7 86/02/01 16:07:10 tony Rel $";
        !             9: #endif lint
        !            10: 
        !            11: #include <X/Xlib.h>
        !            12: #include "ptyx.h"
        !            13: /*
        !            14:  * This file presumes 32bits/word.  This is somewhat of a crock, and should
        !            15:  * be fixed sometime.
        !            16:  */
        !            17: 
        !            18: /*
        !            19:  * places tabstops at only every 8 columns
        !            20:  */
        !            21: TabReset(tabs)
        !            22: Tabs   tabs;
        !            23: {
        !            24:        register int i;
        !            25: 
        !            26:        for (i=0; i<TAB_ARRAY_SIZE; ++i)
        !            27:                tabs[i] = 0;
        !            28: 
        !            29:        for (i=0; i<MAX_TABS; i+=8)
        !            30:                TabSet(tabs, i);
        !            31: }      
        !            32: 
        !            33: 
        !            34: /*
        !            35:  * places a tabstop at col
        !            36:  */
        !            37: TabSet(tabs, col)
        !            38: Tabs   tabs;
        !            39: {
        !            40:        tabs[col >> 5] |= (1 << (col & 31));
        !            41: }
        !            42: 
        !            43: /*
        !            44:  * clears a tabstop at col
        !            45:  */
        !            46: TabClear(tabs, col)
        !            47: Tabs   tabs;
        !            48: {
        !            49:        tabs[col >> 5] &= ~(1 << (col & 31));
        !            50: }
        !            51: 
        !            52: /*
        !            53:  * returns the column of the next tabstop
        !            54:  * (or MAX_TABS - 1 if there are no more).
        !            55:  * A tabstop at col is ignored.
        !            56:  */
        !            57: TabNext (tabs, col)
        !            58: Tabs   tabs;
        !            59: {
        !            60:        for (++col; col<MAX_TABS; ++col)
        !            61:                if (tabs[col >> 5] & (1 << (col & 31)))
        !            62:                        return (col);
        !            63: 
        !            64:        return (MAX_TABS - 1);
        !            65: }
        !            66: 
        !            67: /*
        !            68:  * clears all tabs
        !            69:  */
        !            70: TabZonk (tabs)
        !            71: Tabs   tabs;
        !            72: {
        !            73:        register int i;
        !            74: 
        !            75:        for (i=0; i<TAB_ARRAY_SIZE; ++i)
        !            76:                tabs[i] = 0;
        !            77: }

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