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#include "config.h"
#include <assert.h>
#include <errno.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "logerr.h"
#include "math.h"
#include "util.h"
#include "string.h"
struct String {
const size_t length;
const uint8_t *const bytes;
};
int
string_new_with(
const char *const string,
const size_t length,
const struct String **const out
) {
int rc = -1;
const struct String *ret = NULL;
const uint8_t *bytes = NULL;
ret = malloc(sizeof(*ret));
if (ret == NULL) {
logerr("malloc(): %s", strerror(errno));
goto out;
}
bytes = malloc(length + NULL_TERMINATOR);
if (bytes == NULL) {
logerr("malloc(): %s", strerror(errno));
goto out;
}
memcpy((void *)bytes, string, length);
memcpy((void *)(bytes + length), "", NULL_TERMINATOR);
memcpy((void *)ret, &(struct String) {
.length = length,
.bytes = bytes,
}, sizeof(*ret));
*out = ret;
rc = 0;
out:
if (rc) {
if (bytes != NULL) {
free((void *)bytes);
ret = NULL;
}
if (ret != NULL) {
free((void *)ret);
ret = NULL;
}
}
return rc;
}
int
string_new(const char *const string, const struct String **const out) {
return string_new_with(string, strlen(string), out);
}
void
string_free(const struct String **const s) {
free((void *)(*s)->bytes);
free((void *)(*s));
*s = NULL;
}
const char *
cstr(const struct String *s) {
return (const char *)s->bytes;
}
enum Comparison
string_equal(const struct String *const s1, const struct String *const s2) {
if (s1->length < s2->length) {
return Comparison_LT;
} else if (s1->length > s2->length) {
return Comparison_GT;
} else {
const int ret = strcmp((const char *)s1->bytes, (const char *)s2->bytes);
if (ret < 0) {
return Comparison_LT;
} else if (ret > 0) {
return Comparison_GT;
} else {
return Comparison_EQ;
}
}
}
int
string_append(
const struct String *const s1,
const struct String *const s2,
const struct String **const out
) {
int rc = -1;
const struct String *ret = NULL;
const uint8_t *bytes = NULL;
size_t length;
if (add_size(s1->length, s2->length, &length)) {
logerr("add_size()");
goto out;
}
ret = malloc(sizeof(*ret));
if (ret == NULL) {
logerr("malloc(): %s", strerror(errno));
goto out;
}
bytes = malloc(length + NULL_TERMINATOR);
if (bytes == NULL) {
logerr("malloc(): %s", strerror(errno));
goto out;
}
memcpy((void *)bytes, s1->bytes, s1->length);
memcpy((void *)(bytes + s1->length), s2->bytes, s2->length);
memcpy((void *)(bytes + length), "", NULL_TERMINATOR);
memcpy((void *)ret, &(struct String) {
.length = length,
.bytes = bytes,
}, sizeof(*ret));
*out = ret;
rc = 0;
out:
if (rc) {
if (bytes != NULL) {
free((void *)bytes);
bytes = NULL;
}
if (ret != NULL) {
free((void *)ret);
ret = NULL;
}
}
return rc;
}
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