jack-compiler/util.c

#include <string.h>
#include <stdlib.h>
#include "util.h"

char* heapstr(const char* str, int len) {
	int size = sizeof(char) * (len + 1);
	char* outstr = (char*)malloc(size);
	strcpy(outstr, str);
	return outstr;
}

char* ezheapstr(const char* str) {
	return heapstr(str, strlen(str));
}

void* copy(void* v, int size) {
	void* copy = malloc(size);
	memcpy(copy, v, size);
	return copy;
}

int countplaces(int n) {
	int places = 1;
	int divisor = 1;
	if(n < 0) {
		n = -n;
		places++;
	}
	while(n / divisor >= 10) {
		places++;
		divisor *= 10;
	}
	return places;
}

char* itoa(int i) {
	int size = sizeof(char)*(countplaces(i)+1);
	char* a = (char*)malloc(size);
	snprintf(a, size, "%i", i);
	return a;
}

STRINGLIST* initstrlist(const char** strs, int count) {
	STRINGLIST* strlist = (STRINGLIST*)malloc(sizeof(STRINGLIST));
	STRINGLIST* curr = strlist;
	for(int i = 0; i < count-1; i++) {
		curr->content = ezheapstr(strs[i]);
		curr->next = (STRINGLIST*)malloc(sizeof(STRINGLIST));
		curr = curr->next;
	}
	curr->content = ezheapstr(strs[count-1]);
	curr->next = NULL;
	return strlist;
}

void printstrlist(STRINGLIST* strlist, FILE* stream) {
	while(strlist != NULL) {
		fprintf(stream, "%s\n", strlist->content);
		strlist = strlist->next;
	}
}

void freestrlist(STRINGLIST* strlist) {
	STRINGLIST* next = strlist->next;
	free(strlist);
	if(next != NULL)
		freestrlist(next);
}

bool existsinarray(STRINGARRAY* arr, const char* item) {
	for(int i = 0; i < arr->size; i++)
		if(!strcmp(arr->items[i], item))
			return true;
	return false;
}