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Panuozzo77

Sep 21st, 2022

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#include "hierarchy.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define MAXL1 20
#define MAXL2 50
struct hier
{
char *name;
char **songs;
int num;
};
int charChecker(char *p)
{
if(p==NULL)
{
printf("errore di allocazione caratteri");
exit(9);
}
return 0;
}
hierarchy newAuthor(char *nm)
{
hierarchy new=malloc(sizeof(hierarchy));
new->name=malloc(strlen(nm)+1);
new->songs=malloc(sizeof(char*));
strcpy(new->name, nm);
new->num=0;
}
void addSong(hierarchy p, char *nm)
{
p->songs=realloc(p->songs, sizeof(char*)*(numEl(p)+1));
if(!p->songs) exit(9);
p->songs[numEl(p)]=malloc(strlen(nm)+1);
strcpy(p->songs[numEl(p)], nm);
p->num++;
}
char *authorName(hierarchy p)
{
return p->name;
}
char **songNames(hierarchy p)
{
return p->songs;
}
int numEl(hierarchy p)
{
return p->num;
}
void printHierarchy(hierarchy p)
{
for(int i=0; i<numEl(p); i++)
printf("%s\t %s\n", authorName(p), songNames(p)[i]);
}
void printAllHierarchy(hierarchy *p, int n)
{
for(int i=0; i<n; i++)
printHierarchy(p[i]);
}
//funzione di servizio
int searchAuthor(hierarchy* res, char *author, int numAuthors)
{
for(int i=0; i<numAuthors ; i++)
if(strcmp(authorName(res[i]), author)==0)
return 1; //trovato
return 0; //non trovato
}
//funzione di servizio
int findAuthorNum(hierarchy *res, char *author, int numAuthors)
{
int i=0;
for(; i<numAuthors ; i++)
if(strcmp(authorName(res[i]), author)==0)
return i;
}
void newAuthor2(hierarchy *p, int i, char *name)
{
p[i]=malloc(sizeof(hierarchy));
if(!p[i]) exit (9);
p[i]->name=malloc(strlen(name)+1);
charChecker(p[i]->name);
strcpy(p[i]->name, name);
p[i]->num=0;
}
hierarchy *extract(FILE *p)
{
int numAuthors=0, MAX=5;
char *author, *song;
hierarchy *result=malloc(sizeof(hierarchy)*MAX);
while(!feof(p))
{
if(numAuthors>=MAX)
{
MAX+=1;
result=realloc(result, sizeof(hierarchy)*MAX);
}
author=malloc(sizeof(char)*MAXL1);
song=malloc(sizeof(char)*MAXL2);
charChecker(author);
charChecker(song);
fscanf(p, "%s\t %s", author, song);
author=realloc(author, strlen(author)+1);
song=realloc(song, strlen(song)+1);
charChecker(author);
charChecker(song);
if(!searchAuthor(result, author, numAuthors)) //se l'autore non viene trovato
{
newAuthor2(result, numAuthors, author); //aggiungo l'autore
addSong(result[numAuthors], song); //aggiungo la canzone
numAuthors++;
}
//l'autore è già presente
else
addSong(result[findAuthorNum(result, author, numAuthors)], song); //trovo la corrispondenza nell'array
free(author);
free(song);
}
}

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