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test_ref.c
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test_ref.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "tst.h"
/** constants insert, delete, max word(s) & stack nodes */
enum { INS, DEL, WRDMAX = 256, STKMAX = 512, LMAX = 1024 };
#define REF INS
#define CPY DEL
/* timing helper function */
static double tvgetf(void)
{
struct timespec ts;
double sec;
clock_gettime(CLOCK_REALTIME, &ts);
sec = ts.tv_nsec;
sec /= 1e9;
sec += ts.tv_sec;
return sec;
}
/* simple trim '\n' from end of buffer filled by fgets */
static void rmcrlf(char *s)
{
size_t len = strlen(s);
if (len && s[len - 1] == '\n')
s[--len] = 0;
}
#define IN_FILE "cities20000.txt"
int main(int argc, char **argv)
{
char word[WRDMAX] = "";
char *sgl[LMAX] = {NULL};
tst_node *root = NULL, *res = NULL;
int rtn = 0, idx = 0, sidx = 0;
FILE *fp = fopen(IN_FILE, "r");
double t1, t2;
if (!fp) { /* prompt, open, validate file for reading */
fprintf(stderr, "error: file open failed '%s'.\n", argv[1]);
return 1;
}
t1 = tvgetf();
int cnt = 0;
char word2[20000][WRDMAX];
while ((rtn = fscanf(fp, "%s", word2[cnt])) != EOF) {
//char *p = word;
char *p = word2[cnt++];
/* FIXME: insert reference to each string */
if (!tst_ins_del(&root, &p, INS, REF)) {
fprintf(stderr, "error: memory exhausted, tst_insert.\n");
fclose(fp);
return 1;
}
idx++;
}
t2 = tvgetf();
fclose(fp);
/* use --bench argement */
if (argc > 2 && !strncmp(argv[1], "--bench", 7)) {
int count = 0;
fp = fopen("testdata.txt", "r");
FILE *fp2 = fopen("test_ref_output.txt", "w");
if (fp2 == NULL) {
fclose(fp);
fprintf(stderr, "error: file open failed '%s'.\n", argv[1]);
return 1;
}
while(fscanf(fp, "%s",word) != EOF) {
t1 = tvgetf();
tst_search_prefix(root, word, sgl, &sidx, LMAX);
t2 = tvgetf();
fprintf(fp2, "%d %.6f\n", ++count, t2 - t1);
printf("%d %.6f\n", count, t2 - t1);
}
fclose(fp);
fclose(fp2);
return 0;
}
/* run without argument */
printf("ternary_tree, loaded %d words in %.6f sec\n", idx, t2 - t1);
for (;;) {
char *p;
printf(
"\nCommands:\n"
" a add word to the tree\n"
" f find word in tree\n"
" s search words matching prefix\n"
" d delete word from the tree\n"
" q quit, freeing all data\n\n"
"choice: ");
fgets(word, sizeof word, stdin);
p = NULL;
switch (*word) {
case 'a':
printf("enter word to add: ");
if (!fgets(word, sizeof word, stdin)) {
fprintf(stderr, "error: insufficient input.\n");
break;
}
rmcrlf(word);
p = word;
t1 = tvgetf();
/* FIXME: insert reference to each string */
res = tst_ins_del(&root, &p, INS, CPY);
t2 = tvgetf();
if (res) {
idx++;
printf(" %s - inserted in %.6f sec. (%d words in tree)\n",
(char *) res, t2 - t1, idx);
} else
printf(" %s - already exists in list.\n", (char *) res);
break;
case 'f':
printf("find word in tree: ");
if (!fgets(word, sizeof word, stdin)) {
fprintf(stderr, "error: insufficient input.\n");
break;
}
rmcrlf(word);
t1 = tvgetf();
res = tst_search(root, word);
t2 = tvgetf();
if (res)
printf(" found %s in %.6f sec.\n", (char *) res, t2 - t1);
else
printf(" %s not found.\n", word);
break;
case 's':
printf("find words matching prefix (at least 1 char): ");
if (!fgets(word, sizeof word, stdin)) {
fprintf(stderr, "error: insufficient input.\n");
break;
}
rmcrlf(word);
t1 = tvgetf();
res = tst_search_prefix(root, word, sgl, &sidx, LMAX);
t2 = tvgetf();
if (res) {
printf(" %s - searched prefix in %.6f sec\n\n", word, t2 - t1);
for (int i = 0; i < sidx; i++)
printf("suggest[%d] : %s\n", i, sgl[i]);
} else
printf(" %s - not found\n", word);
break;
case 'd':
printf("enter word to del: ");
if (!fgets(word, sizeof word, stdin)) {
fprintf(stderr, "error: insufficient input.\n");
break;
}
rmcrlf(word);
p = word;
printf(" deleting %s\n", word);
t1 = tvgetf();
/* FIXME: remove reference to each string */
res = tst_ins_del(&root, &p, DEL, CPY);
t2 = tvgetf();
if (res)
printf(" delete failed.\n");
else {
printf(" deleted %s in %.6f sec\n", word, t2 - t1);
idx--;
}
break;
case 'q':
tst_free(root);
return 0;
break;
default:
fprintf(stderr, "error: invalid selection.\n");
break;
}
}
return 0;
}