93 lines
2 KiB
C
93 lines
2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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// Dictionnaries
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typedef struct _node {
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char final;
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struct _node *sons[26];
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} node;
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typedef struct _node *Tree;
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static Tree dictionary=NULL;
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#define true 1
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#define false 0
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Tree addword(Tree d, char *word) {
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// fprintf(stderr,"addword %s\n",word);
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int index = word[0] - 'A';
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int i;
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if (d == NULL) {
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d = (Tree)malloc(sizeof(node));
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d->final=false;
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for (i=0; i<26; i++) {
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d->sons[i]=NULL;
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}
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}
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if (word[0] != '\0') {
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d->sons[index]=addword(d->sons[index],word+1);
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} else {
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d->final = true;
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}
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return d;
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}
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void _show_tree(Tree t, int nb_tabs) {
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int i,j;
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if (t == NULL) {
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return;
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}
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for (j=0; j<nb_tabs; j++) { fprintf(stderr,"."); }
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if (t->final) { fprintf(stderr, "*\n"); }
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for (i=0;i<26;i++) {
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if (t->sons[i] != NULL) {
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fprintf(stderr,"%c\n",i+'A');
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_show_tree(t->sons[i],nb_tabs+1);
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}
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}
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}
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void show_tree(Tree t) {
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_show_tree(t,0);
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}
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char is_element(Tree d, char *word) {
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// fprintf(stderr,"is_element: %s\n", word);
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if (d==NULL) {
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// fprintf(stderr,"d is NULL\n");
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return false;
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}
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if (*word=='\0') {
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// fprintf(stderr,"End of word\n");
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return d->final;
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}
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return is_element(d->sons[word[0]-'A'], word+1);
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}
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#define MAX_WORD_SIZE 128
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void create_dico_from_file(char *filename) {
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FILE *fd=fopen(filename,"r");
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int len;
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char word[MAX_WORD_SIZE];
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char *w;
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if (fd == NULL) {
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fprintf(stderr,"Unable to open the file: '%s'", filename);
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exit(1);
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}
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while (fgets(word, MAX_WORD_SIZE, fd)) {
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for (w=word; (*w != '\n') && (*w != '\0'); w++)
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;
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*w='\0';
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dictionary=addword(dictionary,word);
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}
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close(fd);
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}
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int test(char *word) {
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printf("%s: %d\n", word, is_element(dictionary,word));
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}
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// int main(int argc, char **argv) {
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// create_dico_from_file("words-line.txt");
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// }
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