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Annotation of 43BSD/ucb/tn3270/options.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *     Copyright 1984, 1985 by the Regents of the University of
        !             3:  *     California and by Gregory Glenn Minshall.
        !             4:  *
        !             5:  *     Permission to use, copy, modify, and distribute these
        !             6:  *     programs and their documentation for any purpose and
        !             7:  *     without fee is hereby granted, provided that this
        !             8:  *     copyright and permission appear on all copies and
        !             9:  *     supporting documentation, the name of the Regents of
        !            10:  *     the University of California not be used in advertising
        !            11:  *     or publicity pertaining to distribution of the programs
        !            12:  *     without specific prior permission, and notice be given in
        !            13:  *     supporting documentation that copying and distribution is
        !            14:  *     by permission of the Regents of the University of California
        !            15:  *     and by Gregory Glenn Minshall.  Neither the Regents of the
        !            16:  *     University of California nor Gregory Glenn Minshall make
        !            17:  *     representations about the suitability of this software
        !            18:  *     for any purpose.  It is provided "as is" without
        !            19:  *     express or implied warranty.
        !            20:  */
        !            21: 
        !            22: /* this file contains the definitions, initialization, and processing of
        !            23:        commands to handle the various local options (APL ON, etc.)
        !            24:  */
        !            25: 
        !            26: #include "options.h"
        !            27: 
        !            28: OptInit()
        !            29: {
        !            30:     register int i;
        !            31: 
        !            32:     OptAPLmode = 0;
        !            33:     OptNullProcessing = 1;             /* improved null processing */
        !            34:     OptZonesMode = 0;          /* zones mode off */
        !            35:     OptEnterNL = 0;            /* regular enter/new line keys */
        !            36:     OptColFieldTab = 0;                /* regular column/field tab keys */
        !            37:     OptPacing = 1;                     /* do pacing */
        !            38:     OptAlphaInNumeric = 0;             /* allow alpha in numeric fields */
        !            39:     for (i = 0; i < sizeof OptColTabs; i++) {
        !            40:        OptColTabs[i] = ((i%8) == 0);   /* every 8 columns */
        !            41:     }
        !            42:     OptHome = 0;
        !            43:     OptLeftMargin = 0;
        !            44:     OptWordWrap = 0;
        !            45: }
        !            46: 
        !            47: OptOrder(pointer, count, control)
        !            48: char *pointer;
        !            49: int count;
        !            50: int control;
        !            51: {
        !            52:     int i, j, character, origCount;
        !            53: 
        !            54:     origCount = count;
        !            55: 
        !            56:     if (count == 0) {
        !            57:        return(0);
        !            58:     }
        !            59:     character = *pointer&0xff;
        !            60:     pointer++;
        !            61:     count--;
        !            62:     switch (character) {
        !            63:     case 0xa0:
        !            64:        OptAPLmode = 1;
        !            65:        break;
        !            66:     case 0x61:
        !            67:        OptAPLmode = 0;
        !            68:        break;
        !            69:     case 0x95:
        !            70:        OptNullProcessing = 0;
        !            71:        break;
        !            72:     case 0xd5:
        !            73:        OptNullProcessing = 1;
        !            74:        break;
        !            75:     case 0xa9:
        !            76:        OptZonesMode = 1;
        !            77:        break;
        !            78:     case 0xe9:
        !            79:        OptZonesMode = 0;
        !            80:        break;
        !            81:     case 0x85:
        !            82:        OptEnterNL = 1;
        !            83:        break;
        !            84:     case 0xc5:
        !            85:        OptEnterNL = 0;
        !            86:        break;
        !            87:     case 0x83:
        !            88:        OptColFieldTab = 1;
        !            89:        break;
        !            90:     case 0xc3:
        !            91:        OptColFieldTab = 0;
        !            92:        break;
        !            93:     case 0x97:
        !            94:        OptPacing = 0;
        !            95:        break;
        !            96:     case 0xd7:
        !            97:        OptPacing = 1;
        !            98:        break;
        !            99:     case 0xa5:
        !           100:        OptAlphaInNumeric = 1;
        !           101:        break;
        !           102:     case 0xe5:
        !           103:        OptAlphaInNumeric = 0;
        !           104:        break;
        !           105:     case 0xe3:
        !           106:        if (!control && count < 30) {
        !           107:            return(0);          /* want more! */
        !           108:        }
        !           109:        for (i = 0; i < sizeof OptColTabs; i++) {
        !           110:            OptColTabs[i] = 0;
        !           111:        }
        !           112:        if (!count) {
        !           113:            break;
        !           114:        }
        !           115:        j = (*pointer&0xff)-0x40;
        !           116:        count--;
        !           117:        pointer++;
        !           118:        if (j < 0 || j >= 24) {
        !           119:            break;
        !           120:        }
        !           121:        OptHome = j;
        !           122:        if (!count) {
        !           123:            break;
        !           124:        }
        !           125:        j = (*pointer&0xff)-0x40;
        !           126:        count--;
        !           127:        pointer++;
        !           128:        if (j < 0 || j >= 80) {
        !           129:            break;
        !           130:        }
        !           131:        OptLeftMargin = j;
        !           132:        if (!count) {
        !           133:            break;
        !           134:        }
        !           135:        i = count;
        !           136:        if (i > 28) {
        !           137:            i = 28;
        !           138:        }
        !           139:        while (i) {
        !           140:            j = (*pointer&0xff)-0x40;
        !           141:            if (j < 0 || j >= sizeof OptColTabs) {
        !           142:                break;
        !           143:            }
        !           144:            OptColTabs[j] = 1;
        !           145:            i --;
        !           146:            pointer++;
        !           147:            count--;
        !           148:        }
        !           149:        break;
        !           150:     case 0xa6:
        !           151:        OptWordWrap = 1;
        !           152:        break;
        !           153:     case 0xe6:
        !           154:        OptWordWrap = 0;
        !           155:        break;
        !           156:     default:
        !           157:        break;
        !           158:     }
        !           159:     return(origCount - count);
        !           160: }

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