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// vim:sw=2:ai
/*
* Copyright (C) 2010 DeNA Co.,Ltd.. All rights reserved.
* See COPYRIGHT.txt for details.
*/
#include <errno.h>
#include <stdio.h>
#include "string_util.hpp"
namespace dena {
string_wref
get_token(char *& wp, char *wp_end, char delim)
{
char *const wp_begin = wp;
char *const p = memchr_char(wp_begin, delim, wp_end - wp_begin);
if (p == 0) {
wp = wp_end;
return string_wref(wp_begin, wp_end - wp_begin);
}
wp = p + 1;
return string_wref(wp_begin, p - wp_begin);
}
template <typename T> T
atoi_tmpl_nocheck(const char *start, const char *finish)
{
T v = 0;
for (; start != finish; ++start) {
const char c = *start;
if (c < '0' || c > '9') {
break;
}
v *= 10;
v += static_cast<T>(c - '0');
}
return v;
}
template <typename T> T
atoi_signed_tmpl_nocheck(const char *start, const char *finish)
{
T v = 0;
bool negative = false;
if (start != finish) {
if (start[0] == '-') {
++start;
negative = true;
} else if (start[0] == '+') {
++start;
}
}
for (; start != finish; ++start) {
const char c = *start;
if (c < '0' || c > '9') {
break;
}
v *= 10;
if (negative) {
v -= static_cast<T>(c - '0');
} else {
v += static_cast<T>(c - '0');
}
}
return v;
}
uint32_t
atoi_uint32_nocheck(const char *start, const char *finish)
{
return atoi_tmpl_nocheck<uint32_t>(start, finish);
}
long long
atoll_nocheck(const char *start, const char *finish)
{
return atoi_signed_tmpl_nocheck<long long>(start, finish);
}
void
append_uint32(string_buffer& buf, uint32_t v)
{
char *const wp = buf.make_space(64);
const int len = snprintf(wp, 64, "%lu", static_cast<unsigned long>(v));
if (len > 0) {
buf.space_wrote(len);
}
}
std::string
to_stdstring(uint32_t v)
{
char buf[64];
snprintf(buf, sizeof(buf), "%lu", static_cast<unsigned long>(v));
return std::string(buf);
}
int
errno_string(const char *s, int en, std::string& err_r)
{
char buf[64];
snprintf(buf, sizeof(buf), "%s: %d", s, en);
err_r = std::string(buf);
return en;
}
template <typename T> size_t
split_tmpl_arr(char delim, const T& buf, T *parts, size_t parts_len)
{
typedef typename T::value_type value_type;
size_t i = 0;
value_type *start = buf.begin();
value_type *const finish = buf.end();
for (i = 0; i < parts_len; ++i) {
value_type *const p = memchr_char(start, delim, finish - start);
if (p == 0) {
parts[i] = T(start, finish - start);
++i;
break;
}
parts[i] = T(start, p - start);
start = p + 1;
}
const size_t r = i;
for (; i < parts_len; ++i) {
parts[i] = T();
}
return r;
}
size_t
split(char delim, const string_ref& buf, string_ref *parts,
size_t parts_len)
{
return split_tmpl_arr(delim, buf, parts, parts_len);
}
size_t
split(char delim, const string_wref& buf, string_wref *parts,
size_t parts_len)
{
return split_tmpl_arr(delim, buf, parts, parts_len);
}
template <typename T, typename V> size_t
split_tmpl_vec(char delim, const T& buf, V& parts)
{
typedef typename T::value_type value_type;
size_t i = 0;
value_type *start = buf.begin();
value_type *const finish = buf.end();
while (true) {
value_type *const p = memchr_char(start, delim, finish - start);
if (p == 0) {
parts.push_back(T(start, finish - start));
break;
}
parts.push_back(T(start, p - start));
start = p + 1;
}
const size_t r = i;
return r;
}
size_t
split(char delim, const string_ref& buf, std::vector<string_ref>& parts_r)
{
return split_tmpl_vec(delim, buf, parts_r);
}
size_t
split(char delim, const string_wref& buf, std::vector<string_wref>& parts_r)
{
return split_tmpl_vec(delim, buf, parts_r);
}
};
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