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#include "util.h"
#include "aoc.h"
#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
void
die(const char *fmtstr, ...)
{
va_list ap;
va_start(ap, fmtstr);
fprintf(stderr, "\n");
vfprintf(stderr, fmtstr, ap);
fprintf(stderr, "\n");
va_end(ap);
abort();
}
bool
readtok(char *buf, size_t buflen, char sep, const char **pos, const char *end)
{
const char *c;
size_t len;
if (*pos >= end)
return false;
len = 0;
for (c = *pos; c != end && *c != sep; c++) {
if (len == buflen) die("util: readline: no space");
buf[len++] = *c;
}
if (len == buflen)
die("util: readline: no space");
buf[len++] = '\0';
*pos = c + 1;
return true;
}
int64_t
parsei64(const char *str)
{
int64_t val;
char *end;
val = strtoll(str, &end, 0);
if (end && *end && !isspace(*end))
die("util: parsei64: invalid %s", str);
return val;
}
char *
aprintf(const char *fmtstr, ...)
{
va_list ap, cpy;
ssize_t nb;
char *str;
va_copy(cpy, ap);
va_start(cpy, fmtstr);
nb = vsnprintf(NULL, 0, fmtstr, cpy);
if (nb < 0) die("util: aprintf: invalid fmtstr: %s", fmtstr);
va_end(cpy);
str = malloc((size_t) nb + 1);
if (!str) die("util: aprintf: malloc %lu", nb + 1);
va_start(ap, fmtstr);
nb = vsnprintf(str, (size_t) nb + 1, fmtstr, ap);
va_end(ap);
return str;
}
char *
strdup(const char *str)
{
char *alloc;
alloc = malloc(strlen(str) + 1);
strcpy(alloc, str);
return alloc;
}
char *
apprintf(char *str, const char *fmtstr, ...)
{
va_list ap, cpy;
ssize_t nb;
size_t len;
len = str ? strlen(str) : 0;
va_copy(cpy, ap);
va_start(cpy, fmtstr);
nb = vsnprintf(NULL, 0, fmtstr, cpy);
if (nb < 0) die("util: aprintf: invalid fmtstr: %s", fmtstr);
va_end(cpy);
str = realloc(str, len + (size_t) nb + 1);
if (!str) die("util: aprintf: realloc %lu", nb + 1);
va_start(ap, fmtstr);
nb = vsnprintf(str + len, (size_t) nb + 1, fmtstr, ap);
va_end(ap);
return str;
}
void *
memdup(const void *data, size_t size)
{
void *new;
new = malloc(size);
if (!new) die("util: memdup: malloc %lu", size);
memcpy(new, data, size);
return new;
}
void
readall(FILE *file, void **data, size_t *size)
{
ssize_t pos;
fseek(file, 0, SEEK_END);
pos = ftell(file);
if (pos < 0) die("util: readall: ftell");
*size = (size_t) pos;
fseek(file, 0, SEEK_SET);
*data = malloc(*size);
if (!*data) die("util: readall: malloc %lu", *size);
if (fread(*data, 1, *size, file) != *size)
die("util: readall: incomplete");
}
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