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#include "str.h"
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
char *
str_fmt(const struct allocator *allocator, int *rc, const char *fmtstr, ...)
{
va_list ap, cpy;
char *str;
ssize_t n;
LIBSTR_ABORT_ON_ARGS(!allocator || !fmtstr);
va_copy(cpy, ap);
va_start(cpy, fmtstr);
n = vsnprintf(NULL, 0, fmtstr, cpy);
va_end(cpy);
if (n <= 0) {
if (rc) *rc = 1;
return NULL;
}
str = allocator->alloc(allocator, (size_t) (n + 1), rc);
LIBSTR_ABORT_ON_ALLOC(!str);
if (!str && rc) *rc = -*rc;
if (!str) return NULL;
va_start(ap, fmtstr);
vsnprintf(str, (size_t) (n + 1), fmtstr, ap);
va_end(ap);
return str;
}
char *
str_fmt_realloc(const struct allocator *allocator, int *rc,
void *alloc, const char *fmtstr, ...)
{
va_list ap, cpy;
char *str;
ssize_t n;
LIBSTR_ABORT_ON_ARGS(!allocator || !fmtstr);
va_copy(cpy, ap);
va_start(cpy, fmtstr);
n = vsnprintf(NULL, 0, fmtstr, cpy);
va_end(cpy);
if (n <= 0) {
if (rc) *rc = 1;
return NULL;
}
str = allocator->realloc(allocator, alloc, (size_t) (n + 1), rc);
LIBSTR_ABORT_ON_ALLOC(!str);
if (!str && rc) *rc = -*rc;
if (!str) return NULL;
va_start(ap, fmtstr);
vsnprintf(str, (size_t) (n + 1), fmtstr, ap);
va_end(ap);
return str;
}
char *
str_dup(const struct allocator *allocator, int *rc, const char *str)
{
return str_ndup(allocator, rc, str, strlen(str));
}
char *
str_dup_realloc(const struct allocator *allocator, int *rc,
void *alloc, const char *str)
{
return str_ndup_realloc(allocator, rc, alloc, str, strlen(str));
}
char *
str_ndup(const struct allocator *allocator, int *rc, const char *str, size_t n)
{
char *nstr;
LIBSTR_ABORT_ON_ARGS(!allocator || !str);
nstr = allocator->alloc(allocator, n + 1, rc);
LIBSTR_ABORT_ON_ALLOC(!nstr);
if (!nstr && rc) *rc = -*rc;
if (!nstr) return NULL;
strncpy(nstr, str, n + 1);
return nstr;
}
char *
str_ndup_realloc(const struct allocator *allocator, int *rc,
void *alloc, const char *str, size_t n)
{
char *nstr;
LIBSTR_ABORT_ON_ARGS(!allocator || !str);
nstr = allocator->realloc(allocator, alloc, n + 1, rc);
LIBSTR_ABORT_ON_ALLOC(!nstr);
if (!nstr && rc) *rc = -*rc;
if (!nstr) return NULL;
strncpy(nstr, str, n + 1);
return nstr;
}
char *
str_app(const struct allocator *allocator, int *rc, char *str, const char *app)
{
size_t slen, alen;
LIBSTR_ABORT_ON_ARGS(!allocator);
alen = strlen(app);
slen = str ? strlen(str) : 0;
str = allocator->realloc(allocator, str, slen + alen + 1, rc);
LIBSTR_ABORT_ON_ALLOC(!str);
if (!str && rc) *rc = -*rc;
if (!str) return NULL;
memcpy(str + slen, app, alen + 1);
return str;
}
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