Category : C Source Code
Archive   : C_WNDW.ZIP
Filename : HASHTEST.C

/* (c) Marietta Systems, Inc. 1987
* All rights reserved
*
* Test program for hashed files functions
*/
#include "mtest.h"
void main(){
long rec_nbr;
int fh2, z, x, k;
byte input[30], key[17];
clr_scrn("Filewrit access test");
KEYMATCH[0] = KEYMATCH[1] = 0;
KEYMATCH[4] = 0XB000;
disp_err("",1); /* activate AMEND, INSERT, DELETE keys */
/*
* Create hashed file
*/
if (disp_qry(" Create the hashed file"))
fh2 = hashmake("testfile.hsh", 10, 64, 200L, 5, 16);
else fh2 = fileopen("testfile.hsh", hashed, update);
if (fh2 <= 0) goodbye (106); /* open error */
while (!disp_qry(" Ready to random read/write"));
/*
* Read the hashed file
*/
display ("File opened - records can be read", 1, 40, low);
display ("Next record key", 4, 1, high);
rec_nbr = 1L; FN[fh2].record[64] = 0; key[0] = 0;
for (;;){
set_crsr(4, 17);
if (0 > accept(key, left, alt_reverse, 16, 0)) goodbye(101);
if (INCHAR == QUIT) break;
if (INCHAR == INSERT) x = 1; else x = 0;
rec_nbr = hashread(fh2, key, x);
if (rec_nbr < 1L) {disp_err("Press F5 key to insert new record", 1);
continue;}
switch (INCHAR){
case DELETE: display(&FN[fh2].record[22], 7, 4, alt_low);
if (disp_qry("Do you want to delete the record"))
{FN[fh2].record[0] = DELETED;
filewrit(fh2, &rec_nbr);
FN[fh2].r_count -= 1L;
disp_err("Record deleted", 1013);}
break;
case INSERT: memset(&FN[fh2].record[1], 32, FN[fh2].rec_len - 1);
memcpy(&FN[fh2].record[5], key, 16);
disp_err("Record Insert mode", 1);
case AMEND: set_crsr(7,4);
accept(&FN[fh2].record[22], as_typed, alt_reverse, 40, 0);
if (INCHAR == QUIT) {INCHAR = ENTER; break;}
if (FN[fh2].record[0] != IN_USE) {FN[fh2].record[0] = IN_USE;
FN[fh2].r_count += 1L;}
filewrit(fh2, &rec_nbr);
break;
default: display(&FN[fh2].record[22], 7, 4, alt_low);

break;
} /* end switch */
} /* end for */
if (fileclos(fh2) < 1) goodbye(109);
/*
* Scan through hashed file to analyse usage
*/
while(!disp_qry(" Ready to analyse hashed file"));
clr_wndw();
k = x = z = 0;
if (fileclos(fh2) < 0) goodbye (110);
if ((fh2 = fileopen("testfile.hsh", hashed, readonly)) <= 0) goodbye(111);
while(fileread(fh2, nextrec, &rec_nbr) > 0){
if (FN[fh2].record[0] == EMPTY) {k++; continue;}
if (FN[fh2].record[0] == DELETED) {z++; continue;}
if (FN[fh2].record[0] != IN_USE)
{disp_err("corrupted record",1); goodbye(2);}
display(&FN[fh2].record[5],++x,1,alt_low);
if (!(x & 0XF)) idleloop(36);
}
mk_wndw(10, 25, 16, 55, "Analysis of file");
sprintf(input, " %3u records in use ", x); display(input, 1, 4, reverse);
sprintf(input, " %3u records deleted ", z); display(input, 2, 4, reverse);
sprintf(input, " %3u records empty ", k); display(input, 3, 4, reverse);
sprintf(input, " %3lu r_count value ", FN[fh2].r_count);
display(input, 5, 4, alt_reverse);
disp_msg(" Press any key to end", 1); read_kb();
goodbye(0);
}