Source Code 1994 March/Source_Code_CD-ROM_Walnut_Creek_March_1994.iso/compsrcs/misc/volume33/mbase/part05

Text File | 1992-11-23 | 55.3 KB | 1,965 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Richard Parvin Jernigan)
Subject:  v33i123:  mbase - MetalBase 5.0, Portable database engine, Part05/08
Message-ID: <[e-mail]>
X-Md4-Signature: 7c0f340c8c6f6f5ba8ed9c2f701e46da
Date: Mon, 23 Nov 1992 23:25:24 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Richard Parvin Jernigan)
Posting-number: Volume 33, Issue 123
Archive-name: mbase/part05
Environment: AMIGA, MS-DOS, HP-UX, XENIX, UNIX, ULTRIX, SGI, SU, Curses
Supersedes: mbase: Volume 28, Issue 40-44

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# Contents:  dox/build.dox sample/makefile src/create.c src/entry.c
#   src/form_wr.c src/util2.c
# Wrapped by kent@sparky on Mon Nov 23 16:33:14 1992
PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:/usr/lbin ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive 5 (of 8)."'
if test -f 'dox/build.dox' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'dox/build.dox'\"
else
  echo shar: Extracting \"'dox/build.dox'\" \(10995 characters\)
  sed "s/^X//" >'dox/build.dox' <<'END_OF_FILE'
XBuild Documentation                                               MetalBase 5.0
X-------------------------------------------------------------------------------
X
X                                  Function
X
XRelations are built from schema files, which decribe the relation in a more
Xhuman-friendly syntax.  Schema for MetalBase 4.0 and up relations take the
Xfollowing form (Words in brackets are optional syntax, words enclosed in <>
Xare sample entries):
X
X        [relation] <equipment>
X
X        field <customer>         [type] <string> [length/*] <5> ;
X        field <num_purchased>    [type] <ushort> ;
X        field <part_number>      [type] <char>   [length/*] <4> ;
X        field <shop_address>     [type] <char>   [length/*] <11> ;
X        field <price_code>       [type] <money> ;
X        field <transaction>      [type] <serial> [<start 100>] ;
X
X        index customer [on] customer                 [<with duplicates>] ;
X        index part     [on] part_number,price_code   [with duplicates] ;
X        index ix_price [on] price_code               [<with duplicates>] ;
X
X        [<typedef <equ> >] ;
X
X        end
X
XAh, but note:  4.1 and up expect to find SEMICOLONS after every line save
X"Relation..." and "End"!  It's okay if they're not there, but better get
Xin the habit, 'cause report and form will choke heavily without their
Xsemicolons.
X
XBuild is the program which reads these schema and creates MetalBase-format
Xrelations from them; in addition, build released with mbase 4.0 and up can
Xcreate C-style header files for interface with metalbase routines; these look
Xsomewhat like this:
X
X   #ifndef EQUIPMENT_H
X   #define EQUIPMENT_H
X
X   /*
X    * This file was created by MetalBase version 5.0 to reflect the structure
X    * of the relation "equipment".
X    *
X    * MetalBase 5.0 released October 1992 by virtual![e-mail]
X    *
X    */
X
X   typedef struct
X    { char    customer[5];          /* field customer type string length 5   */
X      ushort  num_purch;            /* field num_purch type ushort           */
X      char    part_numb[4];         /* field part_numb type string length 4  */
X      char    shop_addr[11];        /* field shop_addr type string length 11 */
X      double  price_code;           /* field price_code type money           */
X      long    trans;                /* field trans type serial start 100     */
X      } equipment_str;
X
X   #ifndef MODULE
X      equipment_str equipment_rec;
X   #else
X      extern equipment_str equipment_rec;
X   #endif
X
X   #endif
X
XThe headers created by build include actual data (the reference to
X      equipment_str equipment_rec
Xabove), that should be local to only one module of a multiple .c-program
Xexecutable; all the others should have the headers' variables declared as
Xexternal.  So the headers use #ifdefs and check for the definition of MODULE--
Xif it's there, variables are declared external, if not, they're declared local.
XThat way, variables always go in this one piece of .c code.
X
X
X                             Command-Line Options
X
XBuild's command line is rather simple:
X      build [-q] [-h] schemaname
X   Where
X      -q indicates no output should be sent; all questions are assumed to
X         be answered by their defaults.
X      -h indiciates the header file should be created.  When used with -q,
X         this overrides the "No" default answer for build's question; when
X         used without, the header will be created without the user being
X         asked interactively.
X
XThe schemaname may optionally be terminated in .s; if it is missing, it is
Xadded by build.  MetalBase requires that schema be terminated in .s, and
Xrelations in .rel.
X
X
X                                   Format
X
XThe build utility released with versions 3.1 and higher supports comments at
Xthe end of the "field" and "index" lines, and that's it--that's totally
Xpathetic.  5.0 accepts comments anywhere, like a makefile--anything after a
X# is ignored.  Likewise are form and report.  Empty lines are ignored.
X
X        # Comments
X
X        [relation] <equipment>   # Another comment.
X
X        field <custo...
X
X    The first line of a schema simply tells the computer what to call the new
Xrelation.  The word 'relation' is optional, as is all text enclosed in
Xbrackets in the description way up above.
X    The second section of a schema describes the fields of which every record
Xin the relation will be composed.  The word immediately following 'field' is
Xsimply a name for the field.  Fields may be any of twelve types:
X
X       string/char/character    short             unsigned short
X       long                     unsigned long     float
X       double                   money             time
X       date                     serial            phone
X
X   MetalBase 4.0 and up surpass 3.2 in that they understand the following
X   fields that 3.2 just didn't know about:
X      phone  - This corresponds to the typedef mb_phone, which is actually
X               20 characters.  Fields stored in this type of field are parsed
X               before writing into the database, and sorted correctly
X               regardless of missing or extra pieces of data (extensions,
X               area codes, etc).
X      money  - Fields of this type are actually doubles which are automatically
X               rounded by MetalBase before adding them to a relation.  There
X               is no typedef to support this--use double.
X      time   - MetalBase uses a long to contain a 24-hour clock (including
X               precision to microseconds, though the built-in date-n-time
X               routines only go to seconds), and sorts and stores these
X               appropriately.  There is a typedef (mb_time) for these fields.
X      date   - MetalBase uses a long to contain a date, with range from the
X               year -4096 to 4096, and precision down to the day.  Routines
X               are also included to obtain the current date and time, and
X               to manipulate these formats.  There is a typedef (mb_date) for
X               these fields... use mb_date and mb_time fields as if they were
X               longs, for purposes of returning and passing values.
X      serial - Something that has really been missing from MetalBase.  Each
X               relation now has a counter, and every time a new record is
X               added, the counter goes up--it never goes back down.  If the
X               relation has a serial field, it is automatically filled in by
X               the system--set to this counter's value at the time of addition.
X               In this way, each record can be stamped with a serial code for
X               reference--guaranteed to be unique, record to record (and
X               appropriately, any index containing a serial field as part of
X               itself is automatically marked 'no duplicates allowed').  Serial
X               numbers start at zero unless the parameter "start xxx" is
X               specified in the schema.  Serials are represented as longs;
X               there is no typedef.
X
X   The next point of interest is the number after 'length' or '*' in a
Xcharacter field... this number indicates the number of characters in that
Xfield.  MetalBase will allow any positive integer here your computer can
Xhandle, and if any length, or the sum of all lengths, is indeed large, _build_
Xwill prompt you to add certain lines to the beginning of your code to warn the
Xsystem of excessive-length records.
X
X    After all fields have been declared, indicies are placed on fields and
Xcombinations of fields.  MetalBase requires that you have at least one index
Xin any relation (this is only logical--a database without indicies is nothing
Xmore than a text file).  After the word 'index' in each line, the index must
Xbe given a name (whether or not it is used it up to the programmer), followed
Xby names of fields to be indexed, separated by commas (note that this is VERY
XDIFFERENT from previous versions of MetalBase.  Because version 4.0 and up read
Xrecords directly into structures, the vertical bar ("|") is no longer used at
Xall).  If more than one field name appears, MetalBase will declare that index
Xcomposite.
X
X    Occasionally certain data should not be repeated... for instance, a
Xperson obviously cannot visit a physician's office twice at the same time.  In
Xthis case, were a relation defined as consisting of the fields "name" and
X"visit_time", an index would be declared on "name,time" WITHOUT including the
Xwords 'with duplicates', as seen above.  If such a relation were built,
XMetalBase would not allow the space-time continuum to be stretched, as
Xdescribed previously.  Including the words 'with duplicates' after the
Xdefinition of an index removes this error-catching system, for that index
Xalone.  Use of the duplicate-catching system is entirely a case-to-case
Xdecision... there is little difference in the amount of time used between
Ximplementing and not implementing it.
X
X    If the schema described previously exists as "/usr/joe/equip.s", the
Xcommand BUILD, a utility included for use with MetalBase, will create a
Xrelation called "equipment.rel" under the directory "/usr/joe".  A sample
Xoutput of BUILD is as follows:
X
X        % build /usr/joe/equip.s
X        Building relation equipment under current directory
X
X        Fields___________________________________________________
X        customer [char *5]            num_purchased [ushort]
X        part_number [char *4]         shop_address [char *11]
X        price_code [money]            transaction [serial @100]
X
X        Indicies_________________________________________________
X        customer.....customer................Duplicates allowed
X        part.........part_number,price_code..Duplicates not allowed
X        ix_price.....price_code..............Duplicates allowed
X
X        Continue with the creation of the relation [Y/n] ? <y>
X        Create header file for this relation       [y/N] ? <y>
X
X        Header file created.
X        Relation created--zero entries.
X
X        % ls -C /usr/joe
X        equip.s         equipment.rel       equipment.h
X        %
X
X    Once a relation has been built, it contains no entries, and is ready for
Xuse.  BUILD's sole use is the creation of relations... other utilities
X(discussed later) must be used for maintenance of relations (if needed).
X
X    A recent addition to build's operation is its ability to create header
Xfiles for your programs.  When interacting with MetalBase routines, you must
Xpass pointers to structures where data can be placed--build now creates these
Xstructures for you, removing chances for error along with mindless tedium.
XNote that, as in the above example, the line 'typedef equ' has caused the
Xstructure to be named as:
X
X         typedef struct { ... } equ;
X         equ  equ_rec;
X
XIf this line (typedef equ) were not present in the schema, the structure
Xwould have been named with:
X
X         typedef struct { ... } equipment_str;
X         equipment_str  equipment_rec;
X
XThat is, the relation name appended with "_str".
X
END_OF_FILE
  if test 10995 -ne `wc -c <'dox/build.dox'`; then
    echo shar: \"'dox/build.dox'\" unpacked with wrong size!
  fi
  # end of 'dox/build.dox'
fi
if test -f 'sample/makefile' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'sample/makefile'\"
else
  echo shar: Extracting \"'sample/makefile'\" \(725 characters\)
  sed "s/^X//" >'sample/makefile' <<'END_OF_FILE'
X#
X#  METALBASE 5.0
X#
X#  Released October 1st, 1992 by Huan-Ti [ virtual![e-mail] ]
X#                                        [ [e-mail] ]
X#
X#  Makefile for demonstration program  -- *nix expected
X#
X#
X#  If mbase.h and stdinc.h aren't in /usr/include or /usr/local/include,
X#  put them there or add -Idirectory to CFLAGS=.
X
Xall : sample bench
X
X
Xbench : bench.o
X    cc -f -o bench bench.o -lmb
X
Xbench.o : bench.c bench.h
X    cc -c $(CFLAGS) bench.c
X
Xbench.h : bench.s
X    ./build -qh bench.s
X
X
Xsample : sample.o
X    cc -f -o sample sample.o -lmb -lcurses -lterm
X
Xsample.o : sample.c sample.h sample_fm.h
X    cc -c $(CFLAGS) sample.c
X
Xsample.h : sample.s
X    ./build -qh sample.s
X
Xsample_fm.h : sample.frm
X    ./form sample
X
END_OF_FILE
  if test 725 -ne `wc -c <'sample/makefile'`; then
    echo shar: \"'sample/makefile'\" unpacked with wrong size!
  fi
  # end of 'sample/makefile'
fi
if test -f 'src/create.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'src/create.c'\"
else
  echo shar: Extracting \"'src/create.c'\" \(8713 characters\)
  sed "s/^X//" >'src/create.c' <<'END_OF_FILE'
X/*
X * METALBASE 5.0
X *
X * Released October 1st, 1992 by Huan-Ti [ [e-mail] ]
X *                                       [ [e-mail] ]
X */
X
X#define CREATE_C
X#include "mbase.h"
X#include "internal.h"
X
X/*
X ******************************************************************************
X *
X */
X
Xrelation *
Xmb_new ()
X{
X   relation *rel;
X
X   if ((rel = New (relation)) == RNULL)
X      relerr (MB_NO_MEMORY, RNULL);
X
X   rel->num_i  = 0;
X   rel->num_f  = 0;
X   rel->serial = 0L;
X
X   relerr (MB_OKAY, rel);
X}
X
Xmb_err
Xmb_addindex (rel, name, dups, desc)
Xrelation    *rel;
Xchar             *name,      *desc;
Xint                     dups;
X{
X   char  *pch, *line, temp[128], t2[5];
X   int    i;
X
X   if (_identify (rel) != -1 || dups < 0 || dups > 1 ||
X       ! name || ! *name || ! desc || *desc < '0' || *desc > '9')
X      {
X      baderr (MB_BAD_INDEX);
X      }
X
X   rel->itype[rel->num_i] = dups;  /* 1 == dups, 0 == nodups */
X
X   strcpy (rel->iname[rel->num_i], name);
X   strcpy (rel->idxs[rel->num_i], "000");
X
X   strcpy (temp, desc);
X   line  = temp;
X
X   for (i = 0; i < MAX_IDX-1; i++)
X      {
X      if ((pch = strchr (line, ',')) == NULL)
X         break;
X      *pch = 0;
X
X      sprintf (t2, "%03d", atoi (line));
X      strcat (rel->idxs[rel->num_i], t2);
X
X      line = pch+1;
X      }
X
X   sprintf (t2, "%03d", atoi (line));
X   strcat (rel->idxs[rel->num_i], t2);
X
X   sprintf (t2, "%03d", i+1);
X   strncpy (rel->idxs[rel->num_i], t2, 3);
X
X   rel->num_i ++;
X
X   baderr (MB_OKAY);
X}
X
Xmb_err
Xmb_addfield (rel, name, type, arg)
Xrelation    *rel;
Xchar             *name;
Xftype                   type;
Xlong                          arg;
X{
X   strcpy (rel->name[rel->num_f], name);
X
X   if (type == T_SERIAL)
X      {
X      rel->serial = arg;  /* serial is temporary storage for NextSerial */
X      }
X
X   switch (rel->type[rel->num_f] = type)
X      {
X      case T_CHAR:    rel->siz [rel->num_f] = (int)arg;  break;
X      case T_SHORT:   rel->siz [rel->num_f] =  2;        break;
X      case T_USHORT:  rel->siz [rel->num_f] =  2;        break;
X      case T_LONG:    rel->siz [rel->num_f] =  4;        break;
X      case T_ULONG:   rel->siz [rel->num_f] =  4;        break;
X      case T_FLOAT:   rel->siz [rel->num_f] =  4;        break;
X      case T_DOUBLE:  rel->siz [rel->num_f] =  8;        break;
X      case T_MONEY:   rel->siz [rel->num_f] =  8;        break;
X      case T_TIME:    rel->siz [rel->num_f] =  4;        break;
X      case T_DATE:    rel->siz [rel->num_f] =  4;        break;
X      case T_SERIAL:  rel->siz [rel->num_f] =  4;        break;
X      }
X
X   rel->num_f ++;
X
X   baderr (MB_OKAY);
X}
X
X
X/*
X ******************************************************************************
X *
X */
X
Xmb_err
Xmb_create (rel, name, mem)
Xrelation  *rel;
Xchar           *name;
Xint                   mem;
X{
X   char   temp[35];
X   int    i, R, n, j;
X   short  tshort;
X   long   tlong;
X
X   (void)mem;    /* Reference for compiler's sake; unused in MetalBase 5.0 */
X
X   if (! rel || _identify (rel) != -1)
X      baderr (MB_BAD_REL);
X
X   if (! rel->num_i)   baderr (MB_NO_INDICES);
X   if (! rel->num_f)   baderr (MB_NO_FIELDS);
X
X
X/*
X * See if we can create the file (if it already exists, delete it).
X *
X */
X
X   if (access (name, 0) != -1)
X      unlink (name);
X   if ((R = creatx (name)) == -1)
X      baderr (MB_NO_WRITE);
X   modex (name, 0666);   /* Make the file   -rw-rw-rw-  */
X   close (R);
X
X   if ((R = openx (name, OPENMODE)) == -1)
X      {
X      unlink (name);  /* We made it, but can't open it, so delete it. */
X      baderr (MB_NO_WRITE);
X      }
X
X
X/*
X * Great; we've created the file.  Now fill it out...
X *
X */
X
X   temp[0] = 50;  writx (R, temp, 1);  /* MetalBase 5.0 Signature */
X   temp[0] =  0;  writx (R, temp, 1);  /* Zero users              */
X
X   for (tshort = 0, i = 0; i < 2; i++)
X      write (R, &tshort, 2);           /* Temporary and exclusive locks */
X
X   for (tlong = 0L, i = 0; i < 3; i++)
X      writx (R, &tlong, 4);            /* Pointers to fields,indices,recs */
X
X   writx (R, &tlong, 4);               /* Number of records */
X   writx (R, &rel->serial, 4);         /* Next serial value */
X
X   tshort = (short)rel->num_f;  writx (R, &tshort, 2);  /* Number of fields  */
X   tshort = (short)rel->num_i;  writx (R, &tshort, 2);  /* Number of indices */
X
X   for (i = 0; i < rel->num_i; i++)
X      writx (R, &tlong, 4);       /* Pointers to top of each index tree */
X
X/*
X * That was ugly.  We're now ready to write the fields' descriptions...
X *
X */
X
X   tlong = lseek (R, 0L, 1);               /* Current position?             */
X   lseek (R, POS_FIELDPTR(verCURRENT), 0); /* Pointer to fields' positions  */
X   writx (R, &tlong, 4);
X   lseek (R, tlong, 0);           /* Move back to where we were    */
X
X/*
X * A: var*F.....Fields' descriptions:
X *                 byte    0 : Type (0-10, as listed above)
X *                 bytes 1-2 : Size (short/ used only for char fields)
X *                 bytes 3-? : Name (max len = 20, terminated by '|')
X *
X */
X
X   for (i = 0; i < rel->num_f; i++)
X      {
X      temp[0] = (char)rel->type[i];   writx (R,  temp,   1);
X      tshort  = (short)rel->siz[i];   writx (R, &tshort, 2);
X
X      writx (R, rel->name[i], strlen(rel->name[i]));
X      writx (R, "|", 1);
X      }
X
X/*
X * That was uglier.  We're now ready to write the indices' descriptions...
X *
X */
X
X   tlong = lseek (R, 0L, 1);   /* Current position?             */
X   lseek (R, POS_INDEXPTR, 0); /* Pointer to indices' positions */
X   writx (R, &tlong, 4);
X   lseek (R, tlong, 0);        /* Move back to where we were    */
X
X/*
X * B: var*I.....Indices' descriptions:
X *                 byte    0 : Type (0-1, 0==nodups, 1==dups)
X *                 bytes   1 : Number of fields in this index
X *                 bytes 2-? : Name (max len = 20, terminated by ':')
X *                       --- : Each field's sequential # (as short, 0-based)
X *      1.......Separator ('\n')
X *
X */
X
X   for (i = 0; i < rel->num_i; i++)
X      {
X      strzcpy (temp, rel->idxs[i], 3);
X      n = atoi (temp);
X
X      temp[0] = (char)rel->itype[i];  /* 0==nodups, 1==dups                */
X      temp[1] = (char)n;              /* N==number of fields in this index */
X
X      writx (R, temp, 2);
X
X      writx (R, rel->iname[i], strlen (rel->iname[i]));
X      writx (R, ":", 1);
X
X      for (j = 0; j < n; j++)
X         {
X         strzcpy (temp, &rel->idxs[i][3 + j*3], 3);
X         tshort = (short)atoi (temp);
X         writx (R, &tshort, 2);
X         }
X      }
X
X/*
X * Next, there's the stuff that's new to 5.0-- rel->hack points to the position
X * of all the new stuff.  Included are:
X *    6 bytes (3 * sizeof(short))  - Hacklock positions
X *   60 bytes (30 * sizeof(short)) - Thirty-position service queue
X *   30 bytes (30 * sizeof(char))  - Queue strobes
X *   32 bytes (8 * sizeof(long))   - Reserved for later use
X *
X */
X
X   rel->hack = lseek (R, 0L, 1);  /* Remember current position */
X   tshort = 0;
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X   writx (R, &tshort, 2); writx (R, &tshort, 2); writx (R, &tshort, 2);
X
X   for (i = 0; i < 30; i++)
X      temp[i] = 0;
X
X   writx (R, temp, 30);
X
X   tlong = 0L;
X   writx (R, &tlong, 4); writx (R, &tlong, 4);  /* RESERVED SPACE */
X   writx (R, &tlong, 4); writx (R, &tlong, 4);  /* RESERVED SPACE */
X   writx (R, &tlong, 4); writx (R, &tlong, 4);  /* RESERVED SPACE */
X   writx (R, &tlong, 4); writx (R, &tlong, 4);  /* RESERVED SPACE */
X
X   writx (R, SNGCR, NUMCR);
X
X   tlong = lseek (R, 0L, 1);   /* Current position?             */
X   lseek (R, POS_RECZERO, 0);  /* Pointer to record #0          */
X   writx (R, &tlong, 4);
X
X   rel->recz = tlong;
X
X   close (R);
X
X   baderr (MB_OKAY);
X}
X
Xint
Xmb_getname (rel, name, fIndex)
Xrelation   *rel;
Xchar            *name;
Xint                    fIndex;
X{
X   int   i;
X
X   if (fIndex)
X      {
X      for (i = 0; i < rel->num_i; i++)
X         if (! strcmp (rel->iname[i], name))
X            return i;
X      }
X   else
X      {
X      for (i = 0; i < rel->num_f; i++)
X         if (! strcmp (rel->name[i], name))
X            return i;
X      }
X
X   return -1;
X}
X
END_OF_FILE
  if test 8713 -ne `wc -c <'src/create.c'`; then
    echo shar: \"'src/create.c'\" unpacked with wrong size!
  fi
  # end of 'src/create.c'
fi
if test -f 'src/entry.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'src/entry.c'\"
else
  echo shar: Extracting \"'src/entry.c'\" \(9469 characters\)
  sed "s/^X//" >'src/entry.c' <<'END_OF_FILE'
X/*
X * METALBASE 5.0
X *
X * Released October 1st, 1992 by Huan-Ti [ [e-mail] ]
X *                                       [ [e-mail] ]
X *
X * Special thanks go to Adrian Corston ([e-mail]) for his
X * suggestions and code.  While this code is of my penning, the idea and
X * style of implementation for this are direct ports from his own
X * excellent work.
X *
X */
X
X#define ENTRY_C
X#include "mbase.h"
X
X/*
X * Prototypes
X *
X */
X
XWINDOW     *win;
X
X#ifdef LONGARGS
X   int   _std_val  (de_form *);
X   void  _getnext  (de_form *);
X   int   _validopt (de_form *, field *, char);
X#else
X   int   _std_val();
X   void  _getnext();
X   int   _validopt();
X#endif
X
X /***************************************************************************/
X
X/*
X * form->key will be:
X *  -1 == Abort transaction--they hit CTRL-C or CTRL-Q or some such.
X *   1 == Accept transaction--they hit CTRL-A or some such.
X *  Otherwise, it's the key they hit to get out of the field; look at
X *     input.c to see what it returns.
X *
X */
X
Xint
X_std_val (form)
Xde_form  *form;
X{
X   if (form->key == -1 || form->key == 1)  return form->key;
X   return 0;
X}
X
Xvoid
X_getnext (form)
Xde_form  *form;
X{
X   int  mv;
X
X   if (form->key == -1 || form->key == 1)  return;
X
X   form->nextfield = form->curfield;
X
X   switch (form->key)
X    { case '-': case 'k':            mv = -1;  break;
X      case  0 : case '+': case 'j':  mv =  1;  break;
X      default :                      mv =  0;  break;
X    }
X   if (mv == 0)
X      if (form->fields[form->curfield].inout&FM_IN)  return;
X      else
X         mv = 1;
X
X   for (;;)
X    { form->nextfield += mv;
X
X      if (form->nextfield <  0)
X         form->nextfield=form->numfields-1;
X      if (form->nextfield >= form->numfields)
X         form->nextfield=0;
X
X      if (form->fields[form->nextfield].inout & FM_IN)
X         break;
X    }
X}
X
X/*
X * validopt() is used to check a given Choice field, to make sure its data
X * is valid.  It also looks for any Link fields which reference it, and
X * sets/refreshes those.
X *
X */
X
Xint
X_validopt (form, fld, old)
Xde_form   *form;
Xfield           *fld;
Xchar                  old;
X{
X   int   i, j;
X   char  now;
X
X   now = *(char *)(fld->buffer);
X
X   if (now == 0)
X      {
X      i = 10;
X      }
X   else
X      {
X      for (i = 1; i < 10 && fld->opt_arr[i][0] != 0; i++)
X         {
X         if (strchr (fld->opt_arr[i], now) != NULL)
X            break;
X         }
X      if (i == 10 || fld->opt_arr[i][0] == 0)
X         {
X         *((char *)(fld->buffer))   = old;
X         *((char *)(fld->buffer)+1) = 0;
X         if (old != 0)  return 0;
X         i = 10;
X         }
X      }
X
X   for (j = 0; j < form->numfields; j++)
X      if (form->fields[j].option == 2 &&
X          ! strcmp (form->fields[j].opt_arr[0], fld->name))
X      {
X      if (i == 10)
X         *(char *)(form->fields[j].buffer) = 0;
X      else
X         strcpy (form->fields[j].buffer, form->fields[j].opt_arr[i]);
X      fm_refresh (form, &(form->fields[j]));
X      }
X
X   return 1;
X}
X
X /***************************************************************************/
X
Xint
Xfm_fldnum (form, str)
Xde_form   *form;
Xchar            *str;
X{
X   char         *ptr;
X   register int  i;
X
X   if (!form || !str || !*str)  return -1;
X
X   for (i = 0; i < form->numfields; i++)
X      if (! strcmp (form->fields[i].name, str))  return i;
X
X   for (i = 0; i < form->numfields; i++)
X      if ((ptr = strchr (form->fields[i].name, '.')) != NULL)
X         if (! strcmp (ptr+1, str))  return i;
X
X   return -1;
X}
X
X/*
X * formtorel() is great.  It takes any data in a data-entry form and moves
X * it into the appropriate places in a relation's structure... it goes by
X * name, and only those fields in both are copied.  Wonderful toy.  Pass
X * it pointers to the form and relation, and the structure record for the
X * relation.  reltoform() works the same way but backwards, moving data from
X * a relation's record into a form, BUT MAKE SURE YOU CHECK THE ARGUMENTS
X * FIRST.  They're backwards.  On purpose.
X *
X */
X
Xvoid
Xformtorel (form, rel, ptr)
Xde_form   *form;
Xrelation        *rel;
Xdataptr               ptr;
X{
X   char          temp[80], *a, *b;
X   dataptr       frm;
X   register int  i;
X   int           n;
X
X   if (! form || ! rel || ! ptr)  return;
X
X   for (n = 0; n < rel->num_f; n++)
X      {
X      sprintf (temp, "%s.%s", rel->relname, rel->name[n]);
X      if ((frm = fm_data (form, temp)) != NULL)
X         {
X         a=(char *)ptr +rel->start[n];
X         b=(char *)frm;
X         for (i = 0; i < rel->siz[n]; i++, a++, b++)
X            *a = *b;
X         }
X      }
X}
X
Xvoid
Xreltoform (rel, form, ptr)
Xrelation  *rel;
Xde_form        *form;
Xdataptr               ptr;
X{
X   char          temp[80];
X   dataptr       frm;
X   register int  i;
X   int           n;
X
X   if (! form || ! rel || ! ptr)  return;
X
X   for (n = 0; n < rel->num_f; n++)
X    { sprintf (temp, "%s.%s", rel->relname, rel->name[n]);
X      if ((frm = fm_data (form, temp)) != NULL)
X         for (i = 0; i < rel->siz[n]; i++)
X            ((char *)frm)[i] = ((char *)ptr)[i +rel->start[n]];
X    }
X}
X
X/*
X * Refresh a field.  Basically redisplays whatever's in it, and doesn't
X * move your current field number.
X *
X */
X
Xvoid
Xfm_refresh (form, fld)
Xde_form    *form;
Xfield            *fld;
X{
X   if (! fld)  return;
X   move (form->y +fld->y, form->x +fld->x);
X   display (fld->buffer, fld->type, fld->len);
X   if (fld->option == 1)  (void)_validopt (form, fld, 0);
X}
X
X/*
X * Refresh the whole forsaken form.
X *
X */
X
Xvoid
Xfm_refrall (form)
Xde_form    *form;
X{
X   register int  i;
X   field        *fld;
X
X   if (! form)  return;
X
X   for (i = 0; i < form->numfields; i++)
X    { fld = &(form->fields[i]);
X      move (form->y +fld->y, form->x +fld->x);
X      display(form->fields[i].buffer,form->fields[i].type,form->fields[i].len);
X      if (form->fields[i].option == 1)
X         (void)_validopt (form, &form->fields[i], 0);
X    }
X}
X
X/*
X * zero all data in the form.  Yayy.....
X *
X */
X
Xvoid
Xfm_zero (form)
Xde_form *form;
X{
X   register int  i;
X   dataptr       ptr;
X
X   for (i = 0; i < form->numfields; i++)
X      {
X      ptr = form->fields[i].buffer;
X      switch (form->fields[i].type)
X         {
X         case T_SHORT:   *(short  *)ptr = (short) 0;  break;
X         case T_USHORT:  *(ushort *)ptr = (ushort)0;  break;
X         case T_TIME:
X         case T_DATE:
X         case T_SERIAL:
X         case T_LONG:    *(long   *)ptr = (long)  0;  break;
X         case T_ULONG:   *(ulong  *)ptr = (ulong) 0;  break;
X         case T_FLOAT:   *(float  *)ptr = (float) 0;  break;
X         case T_DOUBLE:
X         case T_MONEY:   *(double *)ptr = (double)0;  break;
X         default:        *(char   *)ptr = 0;          break;
X         }
X      }
X}
X
X/*
X * Give fm_data a form pointer, and a name (like "sample.custnum"), and it
X * will return a pointer to the buffer used to contain sample.custnum's number
X * for data-entry.  Useful, eh?
X *
X */
X
Xdataptr
Xfm_data (form, str)
Xde_form *form;
Xchar          *str;
X{
X   int  i;
X   if (! form || ! str)  return NULL;
X   if ((i = fm_fldnum (form, str)) < 0)  return NULL;
X   return form->fields[i].buffer;
X}
X
X/*
X * Set a mode... those basically just determine which fields you can get into
X * and which you can't.  Logically, it helps to remember what you're doing
X * on the data-entry form in the first place too.
X *
X */
X
Xvoid
Xfm_mode (form, n)
Xde_form *form;
Xint            n;
X{
X   register int  i;
X   if (!form || n < 0 || n > form->nummodes)  return;
X   form->curmode = n;
X   for (i = 0; i < form->numfields; i++)
X      if (form->curmode == 0)
X         form->fields[i].inout = FM_INOUT;
X      else
X         form->fields[i].inout = form->fields[i].mode[form->curmode-1];
X}
X
X/*
X * do_form()'s flow:
X *   display the data-entry form
X *   call fm_mode() to set the current mode
X *   call fm_refrall()
X *   set valid_fn if it's not set already
X *   .-> call input() on the appropriate field  <---------------.
X *   |   if in a choice field, verify its validity --(invalid)--'
X *   |   call _getnext() to set the next field
X *   |   call (*valid_fn)() to validate the transaction:
X *   `---- if returns 0
X *
X */
X
X   /* do_form()  returns 0 if failed, -1 if aborted, and 1 if accepted. */
X
Xint
Xdo_form (form)
Xde_form *form;
X{
X   register int  i;
X   int           wedidit = 0;
X   char          buffer;
X   field        *fld;
X
X   if (!form)  return 0;
X
X   if (! win)
X    { wedidit = 1;  init_curses();
X      savetty(); raw(); noecho(); nl();
X    }
X   clear(); refresh();
X
X   for (i = 0; i < form->numlines; i++)
X      mvaddstr (i+form->y, form->x, form->_scrn[i]);
X   refresh();
X
X   fm_mode    (form, form->curmode);
X   fm_refrall (form);
X
X   if (form->valid_fn == (int (*)())0)  form->valid_fn = _std_val;
X
X   for (;;)
X      {
X      fld = &(form->fields[form->curfield]);
X      move (form->y +fld->y, form->x +fld->x);
X      if (fld->option == 1)  buffer = *(char *)(fld->buffer);
X
X      do   form->key = input (fld->buffer, fld->type, fld->len);
X      while (fld->option == 1 && !_validopt (form, fld, buffer));
X
X      _getnext (form);
X      if ((i = (*form->valid_fn)(form)) != 0)  break;
X      form->key = '.';
X
X      form->curfield = form->nextfield;
X      _getnext (form);
X      form->curfield = form->nextfield;
X      }
X
X/*
X * The second _getnext() function is used to ensure the user hasn't placed
X * us on a bad field--one which we normally couldn't get to.
X *
X */
X
X   if (wedidit)
X      {
X      clear(); refresh(); resetty(); endwin();
X      win = (WINDOW *)0;
X      }
X   return i;
X}
X
END_OF_FILE
  if test 9469 -ne `wc -c <'src/entry.c'`; then
    echo shar: \"'src/entry.c'\" unpacked with wrong size!
  fi
  # end of 'src/entry.c'
fi
if test -f 'src/form_wr.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'src/form_wr.c'\"
else
  echo shar: Extracting \"'src/form_wr.c'\" \(9304 characters\)
  sed "s/^X//" >'src/form_wr.c' <<'END_OF_FILE'
X/*
X * METALBASE 5.0
X *
X * Released October 1st, 1992 by Huan-Ti [ [e-mail] ]
X *                                       [ [e-mail] ]
X *
X * Special thanks go to Adrian Corston ([e-mail]) for his
X * suggestions and code.  While this code is of my penning, the idea and
X * style of implementation for this are direct ports from his own
X * excellent work.
X *
X */
X
X#include "mbase.h"
X
X#ifndef MAXnREL
X#define MAXnREL 20    /* Max # of relations in any given DE form */
X#endif
X#ifndef MAXnFLD
X#define MAXnFLD 40    /* Max # of fields in any given DE form    */
X#endif
X
X/*
X * Definitions
X *
X */
X
X#define LPARQ "("
X#define LBRCQ "{"   /* These are pulled out   */
X#define LBKT  '['   /* so that vi's ()/[]/{}  */
X#define LBRC  '{'   /* matchin works properly */
X#define RBRC  '}'   /* in moving through the  */
X#define RBKT  ']'   /* code.                  */
X#define RBRCQ "}"
X#define RPARQ ")"
X
X#define fieldopt(x) (*(options[x]))
X#define fieldmode(x) (*(modes[x]))
X#define wrdata(x)   write (H, x, strlen(x));
X#define wrline(x) { wrdata(x); wrdata(SNGCR); }
X
X/*
X * Prototypes
X *
X */
X
X#ifdef LONGARGS
X   extern void  id_field     (char *, char *);
X          void  writeit      (void);
X          void  wr_header    (void);
X          void  wr_buffer    (void);
X          void  wr_mode      (void);
X          void  wr_option    (void);
X          void  wr_field     (void);
X          void  wr_screen    (void);
X          void  wr_form      (void);
X          void  strqucpy     (char *, char *);
X#else
X   extern void  id_field();
X          void  writeit();
X          void  wr_header();
X          void  wr_header();
X          void  wr_buffer();
X          void  wr_mode();
X          void  wr_option();
X          void  wr_field();
X          void  wr_screen();
X          void  wr_form();
X          void  strqucpy();
X#endif
X
Xtypedef char optlist[10][40];
Xtypedef int  modelist[20];
X
X/*
X * Global Variables
X *
X */
X
Xint  H;
X
Xextern char      formname[30];
Xextern char      displ[25][140];
Xextern int       num_l, pos_y, pos_x, num_f, num_m;
X
Xextern field     fld[MAXnFLD];
Xextern int       lens[MAXnFLD];
Xextern optlist  *options[MAXnFLD];
Xextern modelist *modes[MAXnFLD];
X
Xvoid
Xwriteit ()
X{
X   int   i;
X   char  temp[128], *ptr;
X
X   if ((ptr = strrchr (formname, '.')) != NULL)  *ptr = 0;
X
X   sprintf (temp, "%-1.5s_fm.h", formname);
X
X   if ((H = openx (temp, O_RDWR)) != -1)
X    { close  (H);
X      unlink (temp);
X    }
X   if ((H = creatx (temp)) == -1)
X    { fprintf (stderr, "cannot create %s -- aborted%s", temp, SNGCR);
X      mb_exit (10);
X    }
X   modex (temp, 0666);   /* Make the file   -rw-rw-rw-  */
X
X   wr_header ();
X   wr_buffer ();
X   wr_mode   ();
X   wr_option ();
X   wr_field  ();
X   wr_screen ();
X   wr_form   ();
X
X   close (H);
X
X   for (i = 0; i < MAXnFLD; i++)
X    {
X      if (options[i] != (optlist *)0)
X       { free (options[i]);
X         options[i] = (optlist *)0;
X       }
X      if (modes[i] != (modelist *)0)
X       { free (modes[i]);
X         modes[i] = (modelist *)0;
X       }
X    }
X
X   printf ("%-1.5s_fm.h written successfully\n", formname);
X}
X
Xvoid
Xwr_header ()
X{
X   char  temp[128];
X   int   i;
X
X   for (i = 0; formname[i] != 0; i++)
X      temp[i] = toupper (formname[i]);
X   temp[i] = 0;
X   strcat (temp, "_FM_H");
X
X   wrdata ("#");  wrdata ("ifndef ");  wrline (temp);
X   wrdata ("#");  wrdata ("define ");  wrline (temp);  wrdata (SNGCR);
X
X   wrdata ("/");  wrline ("*");
X   wrline (" * This file was created by MetalBase version 5.0 from the data-entry");
X   wrdata (" * template \"");  wrdata (formname);  wrdata (".frm");  wrline ("\"");
X   wrline (" *");
X   wrline (" * MetalBase 5.0 released October 1st by [e-mail]");
X   wrline (" *");
X   wrdata (" *");  wrline ("/");
X   wrdata (SNGCR);
X
X   wrdata ("#");  wrline ("ifdef MODULE");
X   wrdata ("   extern de_form ");  wrdata (formname);  wrline ("_fm;");
X   wrdata ("#");  wrline ("else");
X}
X
Xvoid
Xwr_buffer ()
X{
X   char  temp[128];
X   int   i;
X
X   for (i = 0; i < num_f; i++)
X      {
X      wrdata ("   ");
X      switch (fld[i].type)
X         {
X         case T_SHORT:   wrdata ("short    ");  break;
X         case T_USHORT:  wrdata ("ushort   ");  break;
X         case T_LONG:    wrdata ("long     ");  break;
X         case T_ULONG:   wrdata ("ulong    ");  break;
X         case T_FLOAT:   wrdata ("float    ");  break;
X         case T_DOUBLE:  wrdata ("double   ");  break;
X         case T_MONEY:   wrdata ("double   ");  break;
X         case T_TIME:    wrdata ("mb_time  ");  break;
X         case T_DATE:    wrdata ("mb_date  ");  break;
X         case T_SERIAL:  wrdata ("long     ");  break;
X         case T_PHONE:   wrdata ("mb_phone ");  break;
X         default:        wrdata ("char     ");  break;
X         }
X
X      if (fld[i].type == T_CHAR)
X         sprintf (temp, "%s_f%d[%2d] = ", formname, i, lens[i]);
X      else
X         sprintf (temp, "%s_f%d     = ",  formname, i);
X      wrdata (temp);
X
X      switch (fld[i].type)
X         {
X         case T_SHORT:   wrdata ("(short)0");     break;
X         case T_USHORT:  wrdata ("(ushort)0");    break;
X         case T_LONG:    wrdata ("0L");           break;
X         case T_ULONG:   wrdata ("(ulong)0L");    break;
X         case T_FLOAT:   wrdata ("(float)0.0");   break;
X         case T_DOUBLE:  wrdata ("(double)0.0");  break;
X         case T_MONEY:   wrdata ("(double)0.0");  break;
X         case T_TIME:    wrdata ("(mb_time)0");   break;
X         case T_DATE:    wrdata ("(mb_date)0");   break;
X         case T_SERIAL:  wrdata ("0L");           break;
X         default:        wrdata ("\"\"");         break;
X         }
X      wrline (";");
X      }
X   wrdata (SNGCR);
X}
X
Xvoid
Xwr_mode ()
X{
X   char  temp[128];
X   int   i, j;
X
X   for (i = 0; i < num_f; i++)
X    {
X      sprintf (temp, "   int %s_m%d[%d] = ", formname, i, num_m);
X      wrdata  (temp);
X      wrdata  (LBRCQ);
X      wrdata  (" ");
X
X      for (j = 0; j < num_m; j++)
X       {
X         if (fieldmode(i)[j] == FM_INOUT)  strcpy (temp, "FM_INOUT");
X         if (fieldmode(i)[j] == FM_IN)     strcpy (temp, "FM_IN");
X         if (fieldmode(i)[j] == FM_OUT)    strcpy (temp, "FM_OUT");
X         if (j < num_m-1)  strcat (temp, ",");
X         strcat (temp, "     ");  temp[10] = 0;
X         wrdata (temp);
X       }
X      wrdata  (" ");
X      wrdata  (RBRCQ);
X      wrline  (";");
X    }
X
X   wrdata (SNGCR);
X}
X
Xvoid
Xwr_option ()
X{
X   char  temp[128];
X   int   i, j;
X
X   for (i = 0; i < num_f; i++)
X      if (options[i] != (optlist *)0)
X       {
X         for (j = 1; j < 10; j++)
X            if (fieldopt(i)[j][0] == 0)  break;
X         sprintf (temp, "   char *%s_o%d[%d] = ", formname, i, j+1);
X         wrdata (temp);
X         wrdata (LBRCQ);
X         for (j = 0; j < 10; j++)
X            if (j != 0 && fieldopt(i)[j][0] == 0)  break;
X            else
X             {
X               if (j != 0)  wrdata (",");
X               wrdata (" \"");
X               wrdata (fieldopt(i)[j]);
X               wrdata ("\"");
X             }
X         wrdata (", \"\" ");
X         wrdata (RBRCQ);
X         wrline (";");
X       }
X   wrdata (SNGCR);
X}
X
Xvoid
Xwr_field ()
X{
X   char  temp[128];
X   int   i;
X
X   sprintf (temp, "   field %s_f[%d] =", formname, num_f);
X   wrline  (temp);
X
X   for (i = 0; i < num_f; i++)
X    {
X      if (i == 0)
X       { wrdata ("    ");  wrdata (LBRCQ);  wrdata (" "); }
X      else
X       { wrline (",");  wrdata ("      "); }
X
X      wrdata (LBRCQ);  wrdata (" ");
X
X      sprintf (temp, "%2d, %2d, %2d,", fld[i].y, fld[i].x, fld[i].len);
X      wrdata  (temp);
X      sprintf (temp, " %2d, 0, %d,", fld[i].type, fld[i].option);
X      wrdata  (temp);
X      sprintf (temp, " %s_m%d,", formname, i);
X      wrdata  (temp);
X      wrdata ( (fld[i].type==T_CHAR || fld[i].type==T_PHONE) ? "  " : " &" );
X      sprintf (temp, "%s_f%d, \"%s\",", formname, i, fld[i].name);
X      wrdata  (temp);
X      if (options[i] == (optlist *)0)  strcpy (temp, " NULL ");
X      else
X         sprintf (temp, " %s_o%d ", formname, i);
X      wrdata  (temp);
X      wrdata  (RBRCQ);
X    }
X   wrdata (" ");  wrdata (RBRCQ);  wrline (";");
X
X   wrdata (SNGCR);
X}
X
Xvoid
Xwr_screen ()
X{
X   char  temp[128];
X   int   i;
X
X   sprintf (temp, "   char *%s_s[%d] =", formname, num_l);
X   wrline (temp);
X
X   for (i = 0; i < num_l; i++)
X    {
X      if (i == 0)
X       { wrdata ("    ");   wrdata (LBRCQ);   wrdata (" ");
X       }
X      else
X       { wrline (",");   wrdata ("      ");
X       }
X
X      wrdata ("\"");
X      strqucpy (temp, displ[i]);
X      wrdata (temp);
X      wrdata ("\"");
X    }
X   wrdata ("  ");
X   wrdata (RBRCQ);
X   wrline (";");
X   wrdata (SNGCR);
X}
X
Xvoid
Xstrqucpy (oa, ob)
Xchar     *oa,*ob;
X{
X   register char *a, *b;
X   for (a=oa, b=ob; *b; a++,b++)
X      {
X      if (*b == '\"')
X         {
X         *a = '\\';
X         a++;
X         }
X      *a = *b;
X      }
X   *a = 0;
X}
X
Xvoid
Xwr_form ()
X{
X   char  temp[128];
X
X   wrdata ("   de_form "); wrdata (formname); wrline ("_fm =");
X   wrdata ("    ");  wrdata (LBRCQ);
X
X   sprintf (temp, " 1, 0, 0, 0, %d, %d, (int_fn)0, %d,", num_f, num_m, num_l);
X   wrdata  (temp);
X   sprintf (temp, " %d, %d, %s_f, %s_s ", pos_y, pos_x, formname, formname);
X   wrdata  (temp);
X   wrdata  (RBRCQ);
X   wrline  (";");
X
X   wrdata (SNGCR);
X   wrdata ("#");  wrline ("endif");  wrdata (SNGCR);
X   wrdata ("#");  wrline ("endif");  wrdata (SNGCR);
X}
X
END_OF_FILE
  if test 9304 -ne `wc -c <'src/form_wr.c'`; then
    echo shar: \"'src/form_wr.c'\" unpacked with wrong size!
  fi
  # end of 'src/form_wr.c'
fi
if test -f 'src/util2.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'src/util2.c'\"
else
  echo shar: Extracting \"'src/util2.c'\" \(11746 characters\)
  sed "s/^X//" >'src/util2.c' <<'END_OF_FILE'
X/*
X * METALBASE 5.0
X *
X * Released October 1st, 1992 by Huan-Ti [ [e-mail] ]
X *                                       [ [e-mail] ]
X */
X
X#define UTIL_C
X#include "mbase.h"
X#include "internal.h"
X
Xextern int       _started;
Xextern relation *_list[MAX_REL];
X
X/****************************************************************************/
X
Xmb_err
X_balance (rel, rcd, idx, bal)  /* CACHED */
Xrelation *rel;
Xlong           rcd;
Xint                 idx, bal;
X{
X   long   rep, rp;
X   cache *ptr;
X
X   if (! (rep = _find_seq (rel, 0L, rcd, idx, NUM_BAL(bal))) )
X      baderr (MB_CORRUPT);
X
X   ptr = _read_cache (rel, rep, idx);
X   rp = ptr->parent;
X
X   _dislink (rel, rep, idx, rcd);
X   _replace (rel, rcd, rep, idx);
X   _drop    (rel, rcd, idx, rep);
X
X   if (rp != rcd)  _check (rel, rp, rep, idx);  /* Stop at _rep_ */
X
X   ptr = _read_cache (rel, rcd, idx);
X   rp = ptr->parent;
X
X   _check (rel, rp, rep, idx);
X
X   baderr (MB_OKAY);
X}
X
Xvoid
X_dislink (rel, pos, idx, end)  /* CACHED */
Xrelation *rel;
Xlong           pos,      end;
Xint                 idx;
X{
X   char   temp[5];
X   long   ch, par, tmp;
X   int    dir = 0, tdir;
X   cache *ptr;
X
X   ptr = _read_cache (rel, pos, idx); /* There will be one child, at most */
X   ch = ptr->left;
X   if (ch)
X      dir = -1;
X   else
X      {
X      ch = ptr->right;     /* We already read in this record! */
X      dir = (ch ? 1 : 0);
X      }
X
X   par = ptr->parent;
X   temp[0] = (char)((int)ptr->parbal & PARDIR);
X   tdir = temp[0]?1:-1;
X
X   ptr = _read_cache (rel, par, idx);
X   ptr->changed = 1;
X   if (par == 0L)
X      {
X      _changeqcache (ptr, num, ch);
X      }
X   else
X      {
X      if (temp[0]) _changeqcache (ptr, right, ch);
X      else         _changeqcache (ptr, left,  ch);
X      }
X
X   if (ch)
X      {
X      ptr = _read_cache (rel, ch, idx);
X      _change_cache (ptr, parent, par);
X      temp[0] = ptr->parbal;
X      temp[0] = (char)((int)(temp[0] & BAL) | (tdir == 1 ? PARDIR : 0));
X
X      _change_cache (ptr, parbal, temp[0]);
X      }
X
X   for (tmp=par, dir=tdir; tmp != 0L; )   /* Update balances: */
X      {
X      ptr = _read_cache (rel, tmp, idx);
X      temp[0] = ptr->parbal;
X      temp[0] = (char)((int)(temp[0] & PARDIR) | ((temp[0] & BAL) - dir));
X
X      _change_cache (ptr, parbal, temp[0]);
X
X      dir = (temp[0] & PARDIR) ? 1 : -1;
X      if (tmp == end)  break;
X
X      tmp = ptr->parent;
X      }
X}
X
Xvoid
X_replace (rel, old, new, idx)  /* CACHED */
Xrelation *rel;
Xlong           old, new;
Xint                      idx;
X{
X   char   pba;
X   long   lef, rig, par;
X   cache *ptr;
X
X   ptr = _read_cache (rel, old, idx);
X      lef = ptr->left;
X      rig = ptr->right;
X      par = ptr->parent;
X      pba = ptr->parbal;
X   ptr = _read_cache (rel, new, idx);
X      _change_cache (ptr, left,   lef);
X      _changeqcache (ptr, right,  rig);
X      _changeqcache (ptr, parent, par);
X      _changeqcache (ptr, parbal, pba);
X
X   if (par == 0L)   /* Parent */
X      {
X      ptr = _read_cache (rel, 0L, idx);
X      _change_cache (ptr, num, new);
X      }
X   else
X      {
X      ptr = _read_cache (rel, par, idx);
X      if (pba & PARDIR)  _changeqcache (ptr, right, new);
X      else               _changeqcache (ptr, left,  new);
X      ptr->changed = 1;
X      }
X
X   if (lef != 0L)  /* Left child */
X      {
X      ptr = _read_cache (rel, lef, idx);
X      _change_cache (ptr, parent, new);
X      }
X
X   if (rig != 0L)  /* Right child */
X      {
X      ptr = _read_cache (rel, rig, idx);
X      _change_cache (ptr, parent, new);
X      }
X
X   _zero (rel, old, idx);  /* Remove old record's pointers */
X}
X
Xvoid
X_zero    (rel, pos, idx)  /* CACHED */
Xrelation *rel;
Xlong           pos;
Xint                 idx;
X{
X   cache *ptr;
X   ptr = _read_cache (rel, pos, idx);
X   _change_cache (ptr, parbal, BAL_EV);
X   _changeqcache (ptr, left,   0L);
X   _changeqcache (ptr, right,  0L);
X   _changeqcache (ptr, parent, 0L);
X}
X
Xlong
X_find_ends (rel, idx, dir)  /* CACHED */
Xrelation   *rel;
Xint              idx, dir;
X{
X   long    pos, tmp;
X   cache  *ptr;
X
X   _strobe (rel, 0);  /* Don't let anyone think we're dead */
X
X   ptr = _read_cache (rel, 0L, idx);
X   pos = ptr->num;
X
X   if (pos == 0L)  return 0L;
X
X   for (tmp = pos; ; pos = tmp)
X      {
X      ptr = _read_cache (rel, tmp, idx);
X      tmp = _cache_field (ptr, dir);
X
X      if (tmp == 0L)  return pos;
X      }
X}
X
Xlong
X_search  (rel, pos, idx, act, comp)  /* CACHED */
Xrelation *rel;
Xlong           pos;
Xint                 idx;
Xmb_action                act;
Xdataptr                       comp;
X{
X   long     x;
X   int      r,  dir;
X   dataptr  rec;
X   cache   *ptr;
X
X   if (pos == 0L)  return 0;
X
X   _strobe (rel, 0);  /* Don't let anyone think we're dead */
X
X   ptr = _read_cache (rel, pos, idx);
X
X   dir = r = _compare (rel, comp, rec=_rec(rel,pos), idx);
X   free (rec);
X
X   if (dir == 0)
X    { if (act == GTHN || act == LTEQ)                 dir =  1;
X      if (act == GTEQ || act == LTHN || act == EQUL)  dir = -1;
X    }
X
X   if ((x = _search (rel, (dir==1)?ptr->right:ptr->left, idx,act,comp)) != 0L)
X      return x;
X
X   if  (act != GTHN && act != LTHN  && r    ==  0)  return pos;
X   if ((act == GTEQ || act == GTHN) && dir  == -1)  return pos;
X   if ((act == LTEQ || act == LTHN) && dir  ==  1)  return pos;
X
X   return 0L;
X}
X
Xlong
X_find_seq (rel, top, rcd, idx, dir)  /* CACHED */
Xrelation  *rel;
Xlong            top, rcd;
Xint                       idx, dir;
X{
X   char   temp[5];
X   long   pos, tmp;
X   cache *ptr;
X
X   _strobe (rel, 0);  /* Don't let anyone think we're dead */
X
X   ptr = _read_cache (rel, rcd, idx);
X   pos = _cache_field (ptr, dir);
X
X   if (pos == 0L)
X      {
X      if (rcd == top)  return 0L;      /* hit top=no sequential available */
X      for (pos = rcd; ; pos = tmp)
X         {
X         ptr = _read_cache (rel, pos, idx);
X         tmp = ptr->parent;
X
X         if (tmp == top)  return 0L;    /* hit top=no sequential available */
X
X         temp[0] = ptr->parbal;
X         if (dir == ((temp[0] & PARDIR) ? -1 : 1))  return tmp;
X         }
X      }
X
X   for (dir = 0-dir; ; pos = tmp)
X      {
X      ptr = _read_cache (rel, pos, idx);
X      tmp = _cache_field (ptr, dir);
X      if (tmp == 0L)  return pos;
X      }
X}
X
Xlong
X_delete  (rel, bad)  /* CACHED */
Xrelation *rel;
Xlong           bad;
X{
X   static   int  lastmove = -1;
X   register int  i;
X   long          bp, rep, rp;
X   char          buf[5];
X   int           bal;
X   cache        *ptr;
X
X   _free_cache ();
X
X   for (i = 0; i < rel->num_i; i++)
X      {
X      ptr = _read_cache (rel, bad, i);
X      bp     = ptr->parent;
X      buf[0] = ptr->parbal;
X
X      bal= buf[0] & BAL;
X
X      if (bal != BAL_EV)
X         rep = _find_seq (rel, bad, bad, i, NUM_BAL(bal));
X      else
X         if (! (rep = _find_seq (rel, bad, bad, i, togg (lastmove))))
X            rep = _find_seq (rel, bad, bad, i, togg (lastmove));
X
X      if (! rep)
X         {
X         _dislink (rel, bad, i, 0L);
X         }
X      else
X         {
X         ptr = _read_cache (rel, rep, i);
X         rp = ptr->parent;
X
X         _dislink (rel, rep, i, 0L);
X         _replace (rel, bad, rep, i);
X         if (rp != bad)
X            if (_check (rel, rp, bp, i))
X               {
X               _flush_cache (rel, i);
X               longerr (mb_errno, -1L);
X               }
X         }
X
X      if (_check (rel, bp, 0L, i))
X         {
X         _flush_cache (rel, i);
X         longerr (mb_errno, -1L);
X         }
X
X      _flush_cache (rel, i);
X      }
X}
X
Xint
X_compare (rel, ptra, ptrb, idx)  /* -1 == ptra < ptrb */
Xrelation *rel;
Xdataptr        ptra, ptrb;
Xint                        idx;
X{
X   register int  i;
X   int           mx, n, p;
X   char          temp[5];
X
X   strzcpy (temp, rel->idxs[idx], 3);  mx = atoi (temp);
X
X   for (i = 0; i < mx; i++)
X      {
X      strzcpy (temp, &rel->idxs[idx][3*i +3], 3);  p = atoi (temp);
X      if ((n = _comp_fld (rel, ptra, ptrb, p)) != 0)  return n;
X      }
X
X   return 0;
X}
X
Xvoid
X_dumprec (rel, rec)  /* rec must not be encrypted */
Xrelation *rel;
Xdataptr        rec;
X{
X   char          buf[128], temp[80], *p;
X   register int  i;
X
X   buf[0] = 0;
X   for (i=0; i<rel->num_f; i++)
X      {
X      p=(char *)rec +rel->start[i];
X      switch (rel->type[i])
X         {
X         case T_CHAR:    strzcpy (temp, p, rel->siz[i]);               break;
X         case T_SHORT:   sprintf (temp,    "%d",  (int)*(short  *)p);  break;
X         case T_USHORT:  sprintf (temp,    "%u",  (int)*(ushort *)p);  break;
X         case T_LONG:    sprintf (temp,   "%ld", *(long   *)p);        break;
X         case T_ULONG:   sprintf (temp,   "%lu", *(ulong  *)p);        break;
X         case T_FLOAT:   sprintf (temp,    "%f", *(float  *)p);        break;
X         case T_DOUBLE:  sprintf (temp,   "%lf", *(double *)p);        break;
X         case T_MONEY:   sprintf (temp,"%-.2lf", *(double *)p);        break;
X         case T_TIME:    sprintf (temp,   "%ld", *(long   *)p);        break;
X         case T_DATE:    sprintf (temp,   "%ld", *(long   *)p);        break;
X         case T_SERIAL:  sprintf (temp,   "%ld", *(long   *)p);        break;
X         case T_PHONE:   strzcpy (temp, p, 20);                        break;
X         }
X      if (strlen (buf) + strlen (temp) > 126)  break;
X      strcat (buf, temp);
X      strcat (buf, "|");
X      }
X
X   printf ("%s\n", buf);
X}
X
Xint
X_comp_fld (rel, ptra, ptrb, fld)
Xrelation  *rel;
Xdataptr         ptra, ptrb;
Xint                         fld;
X{
X   char  *a, *b;
X   int    n;
X
X   n = rel->siz[fld];
X
X   _cryptf ((dataptr)(a = (char *)ptra +rel->start[fld]), n, rel->mask);
X   _cryptf ((dataptr)(b = (char *)ptrb +rel->start[fld]), n, rel->mask);
X
X   switch (rel->type[fld])
X      {
X      case T_SHORT:   n = _comp_short  ((short  *)a, (short  *)b);     break;
X      case T_USHORT:  n = _comp_ushort ((ushort *)a, (ushort *)b);     break;
X      case T_LONG:    n = _comp_long   ((long   *)a, (long   *)b);     break;
X      case T_ULONG:   n = _comp_ulong  ((ulong  *)a, (ulong  *)b);     break;
X      case T_FLOAT:   n = _comp_float  ((float  *)a, (float  *)b);     break;
X      case T_DOUBLE:  n = _comp_double ((double *)a, (double *)b);     break;
X      case T_MONEY:   n = _comp_double ((double *)a, (double *)b);     break;
X      case T_TIME:    n = _comp_long   ((long   *)a, (long   *)b);     break;
X      case T_DATE:    n = _comp_long   ((long   *)a, (long   *)b);     break;
X      case T_SERIAL:  n = _comp_long   ((long   *)a, (long   *)b);     break;
X      case T_PHONE:   n = _comp_string (a, b, n);  break;
X      default:        n = _comp_string (a, b, n);  break;
X      }
X
X   _cryptf ((dataptr)a, rel->siz[fld], rel->mask);
X   _cryptf ((dataptr)b, rel->siz[fld], rel->mask);
X
X   return n;
X}
X
Xint
X_comp_short (a, b)
Xshort       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_ushort (a, b)
Xushort       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_long (a, b)
Xlong       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_ulong (a, b)
Xulong       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_float (a, b)
Xfloat       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_double (a, b)
Xdouble       *a,*b;
X{
X   return ((*a < *b) ? -1 : (*a > *b) ? 1 : 0);
X}
X
Xint
X_comp_string (a, b, n)
Xchar         *a,*b;
Xint                 n;
X{
X   int  i;
X   i = strncmp (a,b,n);            /* THIS WON'T RETURN -1,0,1!! It returns  */
X   return (i < 0) ? -1 : (i > 0);  /* different amounts on different systems */
X}
X
Xdataptr
X_rec     (rel, rcd)
Xrelation *rel;
Xlong           rcd;
X{
X   dataptr a;
X   a = (dataptr)malloc (1+ rel->rec_len);
X   return _memrec (rel, rcd, a);
X}
X
Xdataptr
X_memrec  (rel, rcd, a)
Xrelation *rel;
Xlong           rcd;
Xdataptr             a;
X{
X   GO_RECID   (rel, rcd);
X   readx      (rel->relcode, a, rel->rec_len);
X   return a;
X}
X
END_OF_FILE
  if test 11746 -ne `wc -c <'src/util2.c'`; then
    echo shar: \"'src/util2.c'\" unpacked with wrong size!
  fi
  # end of 'src/util2.c'
fi
echo shar: End of archive 5 \(of 8\).
cp /dev/null ark5isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 8 archives.
    rm -f ark[1-9]isdone
else
    echo You still must unpack the following archives:
    echo "        " ${MISSING}
fi
exit 0
exit 0 # Just in case...