mirror of
https://github.com/servalproject/serval-dna.git
synced 2024-12-21 06:03:12 +00:00
336 lines
8.4 KiB
C
336 lines
8.4 KiB
C
/*
|
|
Serval numerical string primitives
|
|
Copyright (C) 2012-2015 Serval Project Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#define __SERVAL_DNA__NUMERIC_STR_INLINE
|
|
#include "numeric_str.h"
|
|
#include "str.h"
|
|
#include "strbuf.h"
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
|
|
int str_to_uint16(const char *str, unsigned base, uint16_t *result, const char **afterp)
|
|
{
|
|
return strn_to_uint16(str, 0, base, result, afterp);
|
|
}
|
|
|
|
int strn_to_uint16(const char *str, size_t strlen, unsigned base, uint16_t *result, const char **afterp)
|
|
{
|
|
assert(base > 0);
|
|
assert(base <= 16);
|
|
uint16_t value = 0;
|
|
uint16_t newvalue = 0;
|
|
const char *const end = str + strlen;
|
|
const char *s;
|
|
for (s = str; strlen ? s < end : *s; ++s) {
|
|
int digit = hexvalue(*s);
|
|
if (digit < 0 || (unsigned)digit >= base)
|
|
break;
|
|
newvalue = value * base + digit;
|
|
if (newvalue / base != value) // overflow
|
|
break;
|
|
value = newvalue;
|
|
}
|
|
if (afterp)
|
|
*afterp = s;
|
|
if (s == str || value != newvalue || (!afterp && (strlen ? s != end : *s)))
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
int str_to_int32(const char *str, unsigned base, int32_t *result, const char **afterp)
|
|
{
|
|
if (isspace(*str))
|
|
return 0;
|
|
const char *end = str;
|
|
errno = 0;
|
|
long value = strtol(str, (char**)&end, base);
|
|
if (afterp)
|
|
*afterp = end;
|
|
if (errno == ERANGE || end == str || value > INT32_MAX || value < INT32_MIN || isdigit(*end) || (!afterp && *end))
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
int str_to_uint32(const char *str, unsigned base, uint32_t *result, const char **afterp)
|
|
{
|
|
return strn_to_uint32(str, 0, base, result, afterp);
|
|
}
|
|
|
|
int strn_to_uint32(const char *str, size_t strlen, unsigned base, uint32_t *result, const char **afterp)
|
|
{
|
|
assert(base > 0);
|
|
assert(base <= 16);
|
|
uint32_t value = 0;
|
|
uint32_t newvalue = 0;
|
|
const char *const end = str + strlen;
|
|
const char *s;
|
|
for (s = str; strlen ? s < end : *s; ++s) {
|
|
int digit = hexvalue(*s);
|
|
if (digit < 0 || (unsigned)digit >= base)
|
|
break;
|
|
newvalue = value * base + digit;
|
|
if (newvalue < value) // overflow
|
|
break;
|
|
value = newvalue;
|
|
}
|
|
if (afterp)
|
|
*afterp = s;
|
|
if (s == str || value > UINT32_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
int str_is_uint64_decimal(const char *str)
|
|
{
|
|
return str_to_uint64(str, 10, NULL, NULL);
|
|
}
|
|
|
|
int str_to_int64(const char *str, unsigned base, int64_t *result, const char **afterp)
|
|
{
|
|
if (isspace(*str))
|
|
return 0;
|
|
const char *end = str;
|
|
errno = 0;
|
|
long long value = strtoll(str, (char**)&end, base);
|
|
if (afterp)
|
|
*afterp = end;
|
|
if (errno == ERANGE || end == str || isdigit(*end) || (!afterp && *end))
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
int str_to_uint64(const char *str, unsigned base, uint64_t *result, const char **afterp)
|
|
{
|
|
return strn_to_uint64(str, 0, base, result, afterp);
|
|
}
|
|
|
|
int strn_to_uint64(const char *str, size_t strlen, unsigned base, uint64_t *result, const char **afterp)
|
|
{
|
|
assert(base > 0);
|
|
assert(base <= 16);
|
|
uint64_t value = 0;
|
|
uint64_t newvalue = 0;
|
|
const char *const end = str + strlen;
|
|
const char *s;
|
|
for (s = str; strlen ? s < end : *s; ++s) {
|
|
int digit = hexvalue(*s);
|
|
if (digit < 0 || (unsigned)digit >= base)
|
|
break;
|
|
newvalue = value * base + digit;
|
|
if (newvalue < value) // overflow
|
|
break;
|
|
value = newvalue;
|
|
}
|
|
if (afterp)
|
|
*afterp = s;
|
|
if (s == str || value > UINT64_MAX || value != newvalue || (!afterp && (strlen ? s != end : *s)))
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
static struct scale_factor {
|
|
char symbol;
|
|
uint64_t factor;
|
|
}
|
|
scale_factors[] = {
|
|
{ 'P', 1024LL * 1024LL * 1024LL * 1024LL * 1024LL },
|
|
{ 'p', 1000LL * 1000LL * 1000LL * 1000LL * 1000LL },
|
|
{ 'T', 1024LL * 1024LL * 1024LL * 1024LL },
|
|
{ 't', 1000LL * 1000LL * 1000LL * 1000LL },
|
|
{ 'G', 1024LL * 1024LL * 1024LL },
|
|
{ 'g', 1000LL * 1000LL * 1000LL },
|
|
{ 'M', 1024LL * 1024LL },
|
|
{ 'm', 1000LL * 1000LL },
|
|
{ 'K', 1024LL },
|
|
{ 'k', 1000LL }
|
|
};
|
|
|
|
uint64_t scale_factor(const char *str, const char **afterp)
|
|
{
|
|
uint64_t factor = 1;
|
|
int i;
|
|
for (i = 0; i != NELS(scale_factors); ++i)
|
|
if (scale_factors[i].symbol == str[0]) {
|
|
++str;
|
|
factor = scale_factors[i].factor;
|
|
break;
|
|
}
|
|
if (afterp)
|
|
*afterp = str;
|
|
else if (*str)
|
|
factor = 0;
|
|
return factor;
|
|
}
|
|
|
|
int str_to_int64_scaled(const char *str, unsigned base, int64_t *result, const char **afterp)
|
|
{
|
|
int64_t value;
|
|
const char *end = str;
|
|
if (!str_to_int64(str, base, &value, &end)) {
|
|
if (afterp)
|
|
*afterp = end;
|
|
return 0;
|
|
}
|
|
value *= scale_factor(end, &end);
|
|
if (afterp)
|
|
*afterp = end;
|
|
else if (*end)
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
int str_to_uint32_scaled(const char *str, unsigned base, uint32_t *result, const char **afterp)
|
|
{
|
|
uint32_t value;
|
|
const char *end = str;
|
|
if (!str_to_uint32(str, base, &value, &end)) {
|
|
if (afterp)
|
|
*afterp = end;
|
|
return 0;
|
|
}
|
|
value *= scale_factor(end, &end);
|
|
if (afterp)
|
|
*afterp = end;
|
|
else if (*end)
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
strbuf strbuf_append_uint32_scaled(strbuf sb, uint32_t value)
|
|
{
|
|
char symbol = '\0';
|
|
int i;
|
|
for (i = 0; i != NELS(scale_factors); ++i)
|
|
if (value % scale_factors[i].factor == 0) {
|
|
value /= scale_factors[i].factor;
|
|
symbol = scale_factors[i].symbol;
|
|
break;
|
|
}
|
|
strbuf_sprintf(sb, "%lu", (unsigned long) value);
|
|
if (symbol)
|
|
strbuf_putc(sb, symbol);
|
|
return sb;
|
|
}
|
|
|
|
int str_to_uint64_scaled(const char *str, unsigned base, uint64_t *result, const char **afterp)
|
|
{
|
|
uint64_t value;
|
|
const char *end = str;
|
|
if (!str_to_uint64(str, base, &value, &end)) {
|
|
if (afterp)
|
|
*afterp = end;
|
|
return 0;
|
|
}
|
|
value *= scale_factor(end, &end);
|
|
if (afterp)
|
|
*afterp = end;
|
|
else if (*end)
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
strbuf strbuf_append_uint64_scaled(strbuf sb, uint64_t value)
|
|
{
|
|
char symbol = '\0';
|
|
int i;
|
|
for (i = 0; i != NELS(scale_factors); ++i)
|
|
if (value % scale_factors[i].factor == 0) {
|
|
value /= scale_factors[i].factor;
|
|
symbol = scale_factors[i].symbol;
|
|
break;
|
|
}
|
|
strbuf_sprintf(sb, "%llu", (unsigned long long) value);
|
|
if (symbol)
|
|
strbuf_putc(sb, symbol);
|
|
return sb;
|
|
}
|
|
|
|
int str_to_uint64_interval_ms(const char *str, int64_t *result, const char **afterp)
|
|
{
|
|
const unsigned precision = 1000;
|
|
if (isspace(*str))
|
|
return 0;
|
|
const char *end = str;
|
|
unsigned long long value = strtoull(str, (char**)&end, 10) * precision;
|
|
if (end == str) {
|
|
if (afterp)
|
|
*afterp = end;
|
|
return 0;
|
|
}
|
|
if (end[0] == '.' && isdigit(end[1])) {
|
|
++end;
|
|
unsigned factor;
|
|
for (factor = precision / 10; isdigit(*end) && factor; factor /= 10)
|
|
value += (*end++ - '0') * factor;
|
|
}
|
|
if (afterp)
|
|
*afterp = end;
|
|
else if (*end)
|
|
return 0;
|
|
if (result)
|
|
*result = value;
|
|
return 1;
|
|
}
|
|
|
|
strbuf strbuf_append_double_scaled_binary(strbuf sb, double value)
|
|
{
|
|
const char *suffix = " KMGTP";
|
|
while (value >= 1024 && suffix[1]){
|
|
value = value / 1024;
|
|
suffix++;
|
|
}
|
|
int precision = value < 10 ? 2 : value < 100 ? 1 : 0;
|
|
strbuf_sprintf(sb, "%.*f", precision, value);
|
|
if (*suffix && *suffix != ' ') {
|
|
strbuf_putc(sb, *suffix);
|
|
}
|
|
return sb;
|
|
}
|
|
|
|
strbuf strbuf_append_double_scaled_si(strbuf sb, double value)
|
|
{
|
|
const char *suffix = " kmgtp";
|
|
while (value >= 1000 && suffix[1]){
|
|
value = value / 1000;
|
|
suffix++;
|
|
}
|
|
int precision = value < 10 ? 2 : value < 100 ? 1 : 0;
|
|
strbuf_sprintf(sb, "%.*f", precision, value);
|
|
if (*suffix && *suffix != ' ') {
|
|
strbuf_putc(sb, *suffix);
|
|
}
|
|
return sb;
|
|
}
|