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godot/core/ustring.cpp

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/*************************************************************************/
/* ustring.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "ustring.h"
#include "core/color.h"
#include "core/math/math_funcs.h"
#include "core/os/memory.h"
#include "core/print_string.h"
#include "core/translation.h"
#include "core/ucaps.h"
#include "core/variant.h"
#include "thirdparty/misc/md5.h"
#include "thirdparty/misc/sha256.h"
#include <wchar.h>
#ifndef NO_USE_STDLIB
#include <stdio.h>
#include <stdlib.h>
#endif
#if defined(MINGW_ENABLED) || defined(_MSC_VER)
#define snprintf _snprintf_s
#endif
#define MAX_DIGITS 6
#define UPPERCASE(m_c) (((m_c) >= 'a' && (m_c) <= 'z') ? ((m_c) - ('a' - 'A')) : (m_c))
#define LOWERCASE(m_c) (((m_c) >= 'A' && (m_c) <= 'Z') ? ((m_c) + ('a' - 'A')) : (m_c))
#define IS_DIGIT(m_d) ((m_d) >= '0' && (m_d) <= '9')
#define IS_HEX_DIGIT(m_d) (((m_d) >= '0' && (m_d) <= '9') || ((m_d) >= 'a' && (m_d) <= 'f') || ((m_d) >= 'A' && (m_d) <= 'F'))
const char CharString::_null = 0;
const CharType String::_null = 0;
bool is_symbol(CharType c) {
return c != '_' && ((c >= '!' && c <= '/') || (c >= ':' && c <= '@') || (c >= '[' && c <= '`') || (c >= '{' && c <= '~') || c == '\t' || c == ' ');
}
bool select_word(const String &p_s, int p_col, int &r_beg, int &r_end) {
const String &s = p_s;
int beg = CLAMP(p_col, 0, s.length());
int end = beg;
if (s[beg] > 32 || beg == s.length()) {
bool symbol = beg < s.length() && is_symbol(s[beg]);
while (beg > 0 && s[beg - 1] > 32 && (symbol == is_symbol(s[beg - 1]))) {
beg--;
}
while (end < s.length() && s[end + 1] > 32 && (symbol == is_symbol(s[end + 1]))) {
end++;
}
if (end < s.length())
end += 1;
r_beg = beg;
r_end = end;
return true;
} else {
return false;
}
}
/** STRING **/
bool CharString::operator<(const CharString &p_right) const {
if (length() == 0) {
return p_right.length() != 0;
}
return is_str_less(get_data(), p_right.get_data());
}
CharString &CharString::operator+=(char p_char) {
resize(size() ? size() + 1 : 2);
set(length(), 0);
set(length() - 1, p_char);
return *this;
}
const char *CharString::get_data() const {
if (size())
return &operator[](0);
else
return "";
}
void String::copy_from(const char *p_cstr) {
if (!p_cstr) {
resize(0);
return;
}
int len = 0;
const char *ptr = p_cstr;
while (*(ptr++) != 0)
len++;
if (len == 0) {
resize(0);
return;
}
resize(len + 1); // include 0
CharType *dst = this->ptrw();
for (int i = 0; i < len + 1; i++) {
dst[i] = p_cstr[i];
}
}
void String::copy_from(const CharType *p_cstr, const int p_clip_to) {
if (!p_cstr) {
resize(0);
return;
}
int len = 0;
const CharType *ptr = p_cstr;
while ((p_clip_to < 0 || len < p_clip_to) && *(ptr++) != 0)
len++;
if (len == 0) {
resize(0);
return;
}
copy_from_unchecked(p_cstr, len);
}
// assumes the following have already been validated:
// p_char != NULL
// p_length > 0
// p_length <= p_char strlen
void String::copy_from_unchecked(const CharType *p_char, const int p_length) {
resize(p_length + 1);
set(p_length, 0);
CharType *dst = ptrw();
for (int i = 0; i < p_length; i++) {
dst[i] = p_char[i];
}
}
void String::copy_from(const CharType &p_char) {
resize(2);
set(0, p_char);
set(1, 0);
}
bool String::operator==(const String &p_str) const {
if (length() != p_str.length())
return false;
if (empty())
return true;
int l = length();
const CharType *src = c_str();
const CharType *dst = p_str.c_str();
/* Compare char by char */
for (int i = 0; i < l; i++) {
if (src[i] != dst[i])
return false;
}
return true;
}
bool String::operator!=(const String &p_str) const {
return !(*this == p_str);
}
String String::operator+(const String &p_str) const {
String res = *this;
res += p_str;
return res;
}
/*
String String::operator+(CharType p_chr) const {
String res=*this;
res+=p_chr;
return res;
}
*/
String &String::operator+=(const String &p_str) {
if (empty()) {
*this = p_str;
return *this;
}
if (p_str.empty())
return *this;
int from = length();
resize(length() + p_str.size());
const CharType *src = p_str.c_str();
CharType *dst = ptrw();
set(length(), 0);
for (int i = 0; i < p_str.length(); i++)
dst[from + i] = src[i];
return *this;
}
String &String::operator+=(const CharType *p_str) {
*this += String(p_str);
return *this;
}
String &String::operator+=(CharType p_char) {
resize(size() ? size() + 1 : 2);
set(length(), 0);
set(length() - 1, p_char);
return *this;
}
String &String::operator+=(const char *p_str) {
if (!p_str || p_str[0] == 0)
return *this;
int src_len = 0;
const char *ptr = p_str;
while (*(ptr++) != 0)
src_len++;
int from = length();
resize(from + src_len + 1);
CharType *dst = ptrw();
set(length(), 0);
for (int i = 0; i < src_len; i++)
dst[from + i] = p_str[i];
return *this;
}
void String::operator=(const char *p_str) {
copy_from(p_str);
}
void String::operator=(const CharType *p_str) {
copy_from(p_str);
}
bool String::operator==(const StrRange &p_str_range) const {
int len = p_str_range.len;
if (length() != len)
return false;
if (empty())
return true;
const CharType *c_str = p_str_range.c_str;
const CharType *dst = &operator[](0);
/* Compare char by char */
for (int i = 0; i < len; i++) {
if (c_str[i] != dst[i])
return false;
}
return true;
}
bool String::operator==(const char *p_str) const {
int len = 0;
const char *aux = p_str;
while (*(aux++) != 0)
len++;
if (length() != len)
return false;
if (empty())
return true;
int l = length();
const CharType *dst = c_str();
/* Compare char by char */
for (int i = 0; i < l; i++) {
if (p_str[i] != dst[i])
return false;
}
return true;
}
bool String::operator==(const CharType *p_str) const {
int len = 0;
const CharType *aux = p_str;
while (*(aux++) != 0)
len++;
if (length() != len)
return false;
if (empty())
return true;
int l = length();
const CharType *dst = c_str();
/* Compare char by char */
for (int i = 0; i < l; i++) {
if (p_str[i] != dst[i])
return false;
}
return true;
}
bool String::operator!=(const char *p_str) const {
return (!(*this == p_str));
}
bool String::operator!=(const CharType *p_str) const {
return (!(*this == p_str));
}
bool String::operator<(const CharType *p_str) const {
if (empty() && p_str[0] == 0)
return false;
if (empty())
return true;
return is_str_less(c_str(), p_str);
}
bool String::operator<=(const String &p_str) const {
return (*this < p_str) || (*this == p_str);
}
bool String::operator<(const char *p_str) const {
if (empty() && p_str[0] == 0)
return false;
if (empty())
return true;
return is_str_less(c_str(), p_str);
}
bool String::operator<(const String &p_str) const {
return operator<(p_str.c_str());
}
signed char String::nocasecmp_to(const String &p_str) const {
if (empty() && p_str.empty())
return 0;
if (empty())
return -1;
if (p_str.empty())
return 1;
const CharType *that_str = p_str.c_str();
const CharType *this_str = c_str();
while (true) {
if (*that_str == 0 && *this_str == 0)
return 0; //we're equal
else if (*this_str == 0)
return -1; //if this is empty, and the other one is not, then we're less.. I think?
else if (*that_str == 0)
return 1; //otherwise the other one is smaller..
else if (_find_upper(*this_str) < _find_upper(*that_str)) //more than
return -1;
else if (_find_upper(*this_str) > _find_upper(*that_str)) //less than
return 1;
this_str++;
that_str++;
}
return 0; //should never reach anyway
}
signed char String::casecmp_to(const String &p_str) const {
if (empty() && p_str.empty())
return 0;
if (empty())
return -1;
if (p_str.empty())
return 1;
const CharType *that_str = p_str.c_str();
const CharType *this_str = c_str();
while (true) {
if (*that_str == 0 && *this_str == 0)
return 0; //we're equal
else if (*this_str == 0)
return -1; //if this is empty, and the other one is not, then we're less.. I think?
else if (*that_str == 0)
return 1; //otherwise the other one is smaller..
else if (*this_str < *that_str) //more than
return -1;
else if (*this_str > *that_str) //less than
return 1;
this_str++;
that_str++;
}
return 0; //should never reach anyway
}
signed char String::naturalnocasecmp_to(const String &p_str) const {
const CharType *this_str = c_str();
const CharType *that_str = p_str.c_str();
if (this_str && that_str) {
while (*this_str == '.' || *that_str == '.') {
if (*this_str++ != '.')
return 1;
if (*that_str++ != '.')
return -1;
if (!*that_str)
return 1;
if (!*this_str)
return -1;
}
while (*this_str) {
if (!*that_str)
return 1;
else if (IS_DIGIT(*this_str)) {
int64_t this_int, that_int;
if (!IS_DIGIT(*that_str))
return -1;
/* Compare the numbers */
this_int = to_int(this_str);
that_int = to_int(that_str);
if (this_int < that_int)
return -1;
else if (this_int > that_int)
return 1;
/* Skip */
while (IS_DIGIT(*this_str))
this_str++;
while (IS_DIGIT(*that_str))
that_str++;
} else if (IS_DIGIT(*that_str))
return 1;
else {
if (_find_upper(*this_str) < _find_upper(*that_str)) //more than
return -1;
else if (_find_upper(*this_str) > _find_upper(*that_str)) //less than
return 1;
this_str++;
that_str++;
}
}
if (*that_str)
return -1;
}
return 0;
}
void String::erase(int p_pos, int p_chars) {
*this = left(p_pos) + substr(p_pos + p_chars, length() - ((p_pos + p_chars)));
}
String String::capitalize() const {
String aux = this->camelcase_to_underscore(true).replace("_", " ").strip_edges();
String cap;
for (int i = 0; i < aux.get_slice_count(" "); i++) {
String slice = aux.get_slicec(' ', i);
if (slice.length() > 0) {
slice[0] = _find_upper(slice[0]);
if (i > 0)
cap += " ";
cap += slice;
}
}
return cap;
}
String String::camelcase_to_underscore(bool lowercase) const {
const CharType *cstr = c_str();
String new_string;
const char A = 'A', Z = 'Z';
const char a = 'a', z = 'z';
int start_index = 0;
for (int i = 1; i < this->size(); i++) {
bool is_upper = cstr[i] >= A && cstr[i] <= Z;
bool is_number = cstr[i] >= '0' && cstr[i] <= '9';
bool are_next_2_lower = false;
bool is_next_lower = false;
bool is_next_number = false;
bool was_precedent_upper = cstr[i - 1] >= A && cstr[i - 1] <= Z;
bool was_precedent_number = cstr[i - 1] >= '0' && cstr[i - 1] <= '9';
if (i + 2 < this->size()) {
are_next_2_lower = cstr[i + 1] >= a && cstr[i + 1] <= z && cstr[i + 2] >= a && cstr[i + 2] <= z;
}
if (i + 1 < this->size()) {
is_next_lower = cstr[i + 1] >= a && cstr[i + 1] <= z;
is_next_number = cstr[i + 1] >= '0' && cstr[i + 1] <= '9';
}
const bool cond_a = is_upper && !was_precedent_upper && !was_precedent_number;
const bool cond_b = was_precedent_upper && is_upper && are_next_2_lower;
const bool cond_c = is_number && !was_precedent_number;
const bool can_break_number_letter = is_number && !was_precedent_number && is_next_lower;
const bool can_break_letter_number = !is_number && was_precedent_number && (is_next_lower || is_next_number);
bool should_split = cond_a || cond_b || cond_c || can_break_number_letter || can_break_letter_number;
if (should_split) {
new_string += this->substr(start_index, i - start_index) + "_";
start_index = i;
}
}
new_string += this->substr(start_index, this->size() - start_index);
return lowercase ? new_string.to_lower() : new_string;
}
int String::get_slice_count(String p_splitter) const {
if (empty())
return 0;
if (p_splitter.empty())
return 0;
int pos = 0;
int slices = 1;
while ((pos = find(p_splitter, pos)) >= 0) {
slices++;
pos += p_splitter.length();
}
return slices;
}
String String::get_slice(String p_splitter, int p_slice) const {
if (empty() || p_splitter.empty())
return "";
int pos = 0;
int prev_pos = 0;
//int slices=1;
if (p_slice < 0)
return "";
if (find(p_splitter) == -1)
return *this;
int i = 0;
while (true) {
pos = find(p_splitter, pos);
if (pos == -1)
pos = length(); //reached end
int from = prev_pos;
//int to=pos;
if (p_slice == i) {
return substr(from, pos - from);
}
if (pos == length()) //reached end and no find
break;
pos += p_splitter.length();
prev_pos = pos;
i++;
}
return ""; //no find!
}
String String::get_slicec(CharType p_splitter, int p_slice) const {
if (empty())
return String();
if (p_slice < 0)
return String();
const CharType *c = this->ptr();
int i = 0;
int prev = 0;
int count = 0;
while (true) {
if (c[i] == 0 || c[i] == p_splitter) {
if (p_slice == count) {
return substr(prev, i - prev);
} else if (c[i] == 0) {
return String();
} else {
count++;
prev = i + 1;
}
}
i++;
}
return String(); //no find!
}
Vector<String> String::split_spaces() const {
Vector<String> ret;
int from = 0;
int i = 0;
int len = length();
if (len == 0)
return ret;
bool inside = false;
while (true) {
bool empty = operator[](i) < 33;
if (i == 0)
inside = !empty;
if (!empty && !inside) {
inside = true;
from = i;
}
if (empty && inside) {
ret.push_back(substr(from, i - from));
inside = false;
}
if (i == len)
break;
i++;
}
return ret;
}
Vector<String> String::split(const String &p_splitter, bool p_allow_empty, int p_maxsplit) const {
Vector<String> ret;
int from = 0;
int len = length();
while (true) {
int end = find(p_splitter, from);
if (end < 0)
end = len;
if (p_allow_empty || (end > from)) {
if (p_maxsplit <= 0)
ret.push_back(substr(from, end - from));
else if (p_maxsplit > 0) {
// Put rest of the string and leave cycle.
if (p_maxsplit == ret.size()) {
ret.push_back(substr(from, len));
break;
}
// Otherwise, push items until positive limit is reached.
ret.push_back(substr(from, end - from));
}
}
if (end == len)
break;
from = end + p_splitter.length();
}
return ret;
}
Vector<String> String::rsplit(const String &p_splitter, bool p_allow_empty, int p_maxsplit) const {
Vector<String> ret;
const int len = length();
int remaining_len = len;
while (true) {
if (remaining_len < p_splitter.length() || (p_maxsplit > 0 && p_maxsplit == ret.size())) {
// no room for another splitter or hit max splits, push what's left and we're done
if (p_allow_empty || remaining_len > 0) {
ret.push_back(substr(0, remaining_len));
}
break;
}
int left_edge = rfind(p_splitter, remaining_len - p_splitter.length());
if (left_edge < 0) {
// no more splitters, we're done
ret.push_back(substr(0, remaining_len));
break;
}
int substr_start = left_edge + p_splitter.length();
if (p_allow_empty || substr_start < remaining_len) {
ret.push_back(substr(substr_start, remaining_len - substr_start));
}
remaining_len = left_edge;
}
ret.invert();
return ret;
}
Vector<float> String::split_floats(const String &p_splitter, bool p_allow_empty) const {
Vector<float> ret;
int from = 0;
int len = length();
while (true) {
int end = find(p_splitter, from);
if (end < 0)
end = len;
if (p_allow_empty || (end > from))
ret.push_back(String::to_double(&c_str()[from]));
if (end == len)
break;
from = end + p_splitter.length();
}
return ret;
}
Vector<float> String::split_floats_mk(const Vector<String> &p_splitters, bool p_allow_empty) const {
Vector<float> ret;
int from = 0;
int len = length();
while (true) {
int idx;
int end = findmk(p_splitters, from, &idx);
int spl_len = 1;
if (end < 0) {
end = len;
} else {
spl_len = p_splitters[idx].length();
}
if (p_allow_empty || (end > from)) {
ret.push_back(String::to_double(&c_str()[from]));
}
if (end == len)
break;
from = end + spl_len;
}
return ret;
}
Vector<int> String::split_ints(const String &p_splitter, bool p_allow_empty) const {
Vector<int> ret;
int from = 0;
int len = length();
while (true) {
int end = find(p_splitter, from);
if (end < 0)
end = len;
if (p_allow_empty || (end > from))
ret.push_back(String::to_int(&c_str()[from], end - from));
if (end == len)
break;
from = end + p_splitter.length();
}
return ret;
}
Vector<int> String::split_ints_mk(const Vector<String> &p_splitters, bool p_allow_empty) const {
Vector<int> ret;
int from = 0;
int len = length();
while (true) {
int idx;
int end = findmk(p_splitters, from, &idx);
int spl_len = 1;
if (end < 0) {
end = len;
} else {
spl_len = p_splitters[idx].length();
}
if (p_allow_empty || (end > from))
ret.push_back(String::to_int(&c_str()[from], end - from));
if (end == len)
break;
from = end + spl_len;
}
return ret;
}
String String::join(Vector<String> parts) {
String ret;
for (int i = 0; i < parts.size(); ++i) {
if (i > 0) {
ret += *this;
}
ret += parts[i];
}
return ret;
}
CharType String::char_uppercase(CharType p_char) {
return _find_upper(p_char);
}
CharType String::char_lowercase(CharType p_char) {
return _find_lower(p_char);
}
String String::to_upper() const {
String upper = *this;
for (int i = 0; i < upper.size(); i++) {
const CharType s = upper[i];
const CharType t = _find_upper(s);
if (s != t) // avoid copy on write
upper[i] = t;
}
return upper;
}
String String::to_lower() const {
String lower = *this;
for (int i = 0; i < lower.size(); i++) {
const CharType s = lower[i];
const CharType t = _find_lower(s);
if (s != t) // avoid copy on write
lower[i] = t;
}
return lower;
}
const CharType *String::c_str() const {
static const CharType zero = 0;
return size() ? &operator[](0) : &zero;
}
String String::md5(const uint8_t *p_md5) {
return String::hex_encode_buffer(p_md5, 16);
}
String String::hex_encode_buffer(const uint8_t *p_buffer, int p_len) {
static const char hex[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
String ret;
char v[2] = { 0, 0 };
for (int i = 0; i < p_len; i++) {
v[0] = hex[p_buffer[i] >> 4];
ret += v;
v[0] = hex[p_buffer[i] & 0xF];
ret += v;
}
return ret;
}
String String::chr(CharType p_char) {
CharType c[2] = { p_char, 0 };
return String(c);
}
String String::num(double p_num, int p_decimals) {
#ifndef NO_USE_STDLIB
if (p_decimals > 16)
p_decimals = 16;
char fmt[7];
fmt[0] = '%';
fmt[1] = '.';
if (p_decimals < 0) {
fmt[1] = 'l';
fmt[2] = 'f';
fmt[3] = 0;
} else if (p_decimals < 10) {
fmt[2] = '0' + p_decimals;
fmt[3] = 'l';
fmt[4] = 'f';
fmt[5] = 0;
} else {
fmt[2] = '0' + (p_decimals / 10);
fmt[3] = '0' + (p_decimals % 10);
fmt[4] = 'l';
fmt[5] = 'f';
fmt[6] = 0;
}
char buf[256];
#if defined(__GNUC__) || defined(_MSC_VER)
snprintf(buf, 256, fmt, p_num);
#else
sprintf(buf, fmt, p_num);
#endif
buf[255] = 0;
//destroy trailing zeroes
{
bool period = false;
int z = 0;
while (buf[z]) {
if (buf[z] == '.')
period = true;
z++;
}
if (period) {
z--;
while (z > 0) {
if (buf[z] == '0') {
buf[z] = 0;
} else if (buf[z] == '.') {
buf[z] = 0;
break;
} else {
break;
}
z--;
}
}
}
return buf;
#else
String s;
String sd;
/* integer part */
bool neg = p_num < 0;
p_num = ABS(p_num);
int intn = (int)p_num;
/* decimal part */
if (p_decimals > 0 || (p_decimals == -1 && (int)p_num != p_num)) {
double dec = p_num - (float)((int)p_num);
int digit = 0;
if (p_decimals > MAX_DIGITS)
p_decimals = MAX_DIGITS;
int dec_int = 0;
int dec_max = 0;
while (true) {
dec *= 10.0;
dec_int = dec_int * 10 + (int)dec % 10;
dec_max = dec_max * 10 + 9;
digit++;
if (p_decimals == -1) {
if (digit == MAX_DIGITS) //no point in going to infinite
break;
if ((dec - (float)((int)dec)) < 1e-6)
break;
}
if (digit == p_decimals)
break;
}
dec *= 10;
int last = (int)dec % 10;
if (last > 5) {
if (dec_int == dec_max) {
dec_int = 0;
intn++;
} else {
dec_int++;
}
}
String decimal;
for (int i = 0; i < digit; i++) {
char num[2] = { 0, 0 };
num[0] = '0' + dec_int % 10;
decimal = num + decimal;
dec_int /= 10;
}
sd = '.' + decimal;
}
if (intn == 0)
s = "0";
else {
while (intn) {
CharType num = '0' + (intn % 10);
intn /= 10;
s = num + s;
}
}
s = s + sd;
if (neg)
s = "-" + s;
return s;
#endif
}
String String::num_int64(int64_t p_num, int base, bool capitalize_hex) {
bool sign = p_num < 0;
int64_t n = p_num;
int chars = 0;
do {
n /= base;
chars++;
} while (n);
if (sign)
chars++;
String s;
s.resize(chars + 1);
CharType *c = s.ptrw();
c[chars] = 0;
n = p_num;
do {
int mod = ABS(n % base);
if (mod >= 10) {
char a = (capitalize_hex ? 'A' : 'a');
c[--chars] = a + (mod - 10);
} else {
c[--chars] = '0' + mod;
}
n /= base;
} while (n);
if (sign)
c[0] = '-';
return s;
}
String String::num_uint64(uint64_t p_num, int base, bool capitalize_hex) {
uint64_t n = p_num;
int chars = 0;
do {
n /= base;
chars++;
} while (n);
String s;
s.resize(chars + 1);
CharType *c = s.ptrw();
c[chars] = 0;
n = p_num;
do {
int mod = n % base;
if (mod >= 10) {
char a = (capitalize_hex ? 'A' : 'a');
c[--chars] = a + (mod - 10);
} else {
c[--chars] = '0' + mod;
}
n /= base;
} while (n);
return s;
}
String String::num_real(double p_num) {
String s;
String sd;
/* integer part */
bool neg = p_num < 0;
p_num = ABS(p_num);
int intn = (int)p_num;
/* decimal part */
if ((int)p_num != p_num) {
double dec = p_num - (float)((int)p_num);
int digit = 0;
int decimals = MAX_DIGITS;
int dec_int = 0;
int dec_max = 0;
while (true) {
dec *= 10.0;
dec_int = dec_int * 10 + (int)dec % 10;
dec_max = dec_max * 10 + 9;
digit++;
if ((dec - (float)((int)dec)) < 1e-6)
break;
if (digit == decimals)
break;
}
dec *= 10;
int last = (int)dec % 10;
if (last > 5) {
if (dec_int == dec_max) {
dec_int = 0;
intn++;
} else {
dec_int++;
}
}
String decimal;
for (int i = 0; i < digit; i++) {
char num[2] = { 0, 0 };
num[0] = '0' + dec_int % 10;
decimal = num + decimal;
dec_int /= 10;
}
sd = '.' + decimal;
} else {
sd = ".0";
}
if (intn == 0)
s = "0";
else {
while (intn) {
CharType num = '0' + (intn % 10);
intn /= 10;
s = num + s;
}
}
s = s + sd;
if (neg)
s = "-" + s;
return s;
}
String String::num_scientific(double p_num) {
#ifndef NO_USE_STDLIB
char buf[256];
#if defined(__GNUC__) || defined(_MSC_VER)
snprintf(buf, 256, "%lg", p_num);
#else
sprintf(buf, "%.16lg", p_num);
#endif
buf[255] = 0;
return buf;
#else
return String::num(p_num);
#endif
}
CharString String::ascii(bool p_allow_extended) const {
if (!length())
return CharString();
CharString cs;
cs.resize(size());
for (int i = 0; i < size(); i++)
cs[i] = operator[](i);
return cs;
}
String String::utf8(const char *p_utf8, int p_len) {
String ret;
ret.parse_utf8(p_utf8, p_len);
return ret;
};
bool String::parse_utf8(const char *p_utf8, int p_len) {
#define _UNICERROR(m_err) print_line("Unicode error: " + String(m_err));
String aux;
int cstr_size = 0;
int str_size = 0;
/* HANDLE BOM (Byte Order Mark) */
if (p_len < 0 || p_len >= 3) {
bool has_bom = uint8_t(p_utf8[0]) == 0xEF && uint8_t(p_utf8[1]) == 0xBB && uint8_t(p_utf8[2]) == 0xBF;
if (has_bom) {
//just skip it
if (p_len >= 0)
p_len -= 3;
p_utf8 += 3;
}
}
{
const char *ptrtmp = p_utf8;
const char *ptrtmp_limit = &p_utf8[p_len];
int skip = 0;
while (ptrtmp != ptrtmp_limit && *ptrtmp) {
if (skip == 0) {
uint8_t c = *ptrtmp;
/* Determine the number of characters in sequence */
if ((c & 0x80) == 0)
skip = 0;
else if ((c & 0xE0) == 0xC0)
skip = 1;
else if ((c & 0xF0) == 0xE0)
skip = 2;
else if ((c & 0xF8) == 0xF0)
skip = 3;
else if ((c & 0xFC) == 0xF8)
skip = 4;
else if ((c & 0xFE) == 0xFC)
skip = 5;
else {
_UNICERROR("invalid skip");
return true; //invalid utf8
}
if (skip == 1 && (c & 0x1E) == 0) {
//printf("overlong rejected\n");
_UNICERROR("overlong rejected");
return true; //reject overlong
}
str_size++;
} else {
--skip;
}
cstr_size++;
ptrtmp++;
}
if (skip) {
_UNICERROR("no space left");
return true; //not enough spac
}
}
if (str_size == 0) {
clear();
return false;
}
resize(str_size + 1);
CharType *dst = ptrw();
dst[str_size] = 0;
while (cstr_size) {
int len = 0;
/* Determine the number of characters in sequence */
if ((*p_utf8 & 0x80) == 0)
len = 1;
else if ((*p_utf8 & 0xE0) == 0xC0)
len = 2;
else if ((*p_utf8 & 0xF0) == 0xE0)
len = 3;
else if ((*p_utf8 & 0xF8) == 0xF0)
len = 4;
else if ((*p_utf8 & 0xFC) == 0xF8)
len = 5;
else if ((*p_utf8 & 0xFE) == 0xFC)
len = 6;
else {
_UNICERROR("invalid len");
return true; //invalid UTF8
}
if (len > cstr_size) {
_UNICERROR("no space left");
return true; //not enough space
}
if (len == 2 && (*p_utf8 & 0x1E) == 0) {
//printf("overlong rejected\n");
_UNICERROR("no space left");
return true; //reject overlong
}
/* Convert the first character */
uint32_t unichar = 0;
if (len == 1)
unichar = *p_utf8;
else {
unichar = (0xFF >> (len + 1)) & *p_utf8;
for (int i = 1; i < len; i++) {
if ((p_utf8[i] & 0xC0) != 0x80) {
_UNICERROR("invalid utf8");
return true; //invalid utf8
}
if (unichar == 0 && i == 2 && ((p_utf8[i] & 0x7F) >> (7 - len)) == 0) {
_UNICERROR("invalid utf8 overlong");
return true; //no overlong
}
unichar = (unichar << 6) | (p_utf8[i] & 0x3F);
}
}
//printf("char %i, len %i\n",unichar,len);
if (sizeof(wchar_t) == 2 && unichar > 0xFFFF) {
unichar = ' '; //too long for windows
}
*(dst++) = unichar;
cstr_size -= len;
p_utf8 += len;
}
return false;
}
CharString String::utf8() const {
int l = length();
if (!l)
return CharString();
const CharType *d = &operator[](0);
int fl = 0;
for (int i = 0; i < l; i++) {
uint32_t c = d[i];
if (c <= 0x7f) // 7 bits.
fl += 1;
else if (c <= 0x7ff) { // 11 bits
fl += 2;
} else if (c <= 0xffff) { // 16 bits
fl += 3;
} else if (c <= 0x001fffff) { // 21 bits
fl += 4;
} else if (c <= 0x03ffffff) { // 26 bits
fl += 5;
} else if (c <= 0x7fffffff) { // 31 bits
fl += 6;
}
}
CharString utf8s;
if (fl == 0) {
return utf8s;
}
utf8s.resize(fl + 1);
uint8_t *cdst = (uint8_t *)utf8s.get_data();
#define APPEND_CHAR(m_c) *(cdst++) = m_c
for (int i = 0; i < l; i++) {
uint32_t c = d[i];
if (c <= 0x7f) // 7 bits.
APPEND_CHAR(c);
else if (c <= 0x7ff) { // 11 bits
APPEND_CHAR(uint32_t(0xc0 | ((c >> 6) & 0x1f))); // Top 5 bits.
APPEND_CHAR(uint32_t(0x80 | (c & 0x3f))); // Bottom 6 bits.
} else if (c <= 0xffff) { // 16 bits
APPEND_CHAR(uint32_t(0xe0 | ((c >> 12) & 0x0f))); // Top 4 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 6) & 0x3f))); // Middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | (c & 0x3f))); // Bottom 6 bits.
} else if (c <= 0x001fffff) { // 21 bits
APPEND_CHAR(uint32_t(0xf0 | ((c >> 18) & 0x07))); // Top 3 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 12) & 0x3f))); // Upper middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 6) & 0x3f))); // Lower middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | (c & 0x3f))); // Bottom 6 bits.
} else if (c <= 0x03ffffff) { // 26 bits
APPEND_CHAR(uint32_t(0xf8 | ((c >> 24) & 0x03))); // Top 2 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 18) & 0x3f))); // Upper middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 12) & 0x3f))); // middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 6) & 0x3f))); // Lower middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | (c & 0x3f))); // Bottom 6 bits.
} else if (c <= 0x7fffffff) { // 31 bits
APPEND_CHAR(uint32_t(0xfc | ((c >> 30) & 0x01))); // Top 1 bit.
APPEND_CHAR(uint32_t(0x80 | ((c >> 24) & 0x3f))); // Upper upper middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 18) & 0x3f))); // Lower upper middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 12) & 0x3f))); // Upper lower middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | ((c >> 6) & 0x3f))); // Lower lower middle 6 bits.
APPEND_CHAR(uint32_t(0x80 | (c & 0x3f))); // Bottom 6 bits.
}
}
#undef APPEND_CHAR
*cdst = 0; //trailing zero
return utf8s;
}
/*
String::String(CharType p_char) {
shared=NULL;
copy_from(p_char);
}
*/
String::String(const char *p_str) {
copy_from(p_str);
}
String::String(const CharType *p_str, int p_clip_to_len) {
copy_from(p_str, p_clip_to_len);
}
String::String(const StrRange &p_range) {
if (!p_range.c_str)
return;
copy_from(p_range.c_str, p_range.len);
}
int String::hex_to_int(bool p_with_prefix) const {
if (p_with_prefix && length() < 3)
return 0;
const CharType *s = ptr();
int sign = s[0] == '-' ? -1 : 1;
if (sign < 0) {
s++;
}
if (p_with_prefix) {
if (s[0] != '0' || s[1] != 'x')
return 0;
s += 2;
}
int hex = 0;
while (*s) {
CharType c = LOWERCASE(*s);
int n;
if (c >= '0' && c <= '9') {
n = c - '0';
} else if (c >= 'a' && c <= 'f') {
n = (c - 'a') + 10;
} else {
return 0;
}
hex *= 16;
hex += n;
s++;
}
return hex * sign;
}
int64_t String::hex_to_int64(bool p_with_prefix) const {
if (p_with_prefix && length() < 3)
return 0;
const CharType *s = ptr();
int64_t sign = s[0] == '-' ? -1 : 1;
if (sign < 0) {
s++;
}
if (p_with_prefix) {
if (s[0] != '0' || s[1] != 'x')
return 0;
s += 2;
}
int64_t hex = 0;
while (*s) {
CharType c = LOWERCASE(*s);
int64_t n;
if (c >= '0' && c <= '9') {
n = c - '0';
} else if (c >= 'a' && c <= 'f') {
n = (c - 'a') + 10;
} else {
return 0;
}
hex *= 16;
hex += n;
s++;
}
return hex * sign;
}
int String::to_int() const {
if (length() == 0)
return 0;
int to = (find(".") >= 0) ? find(".") : length();
int integer = 0;
int sign = 1;
for (int i = 0; i < to; i++) {
CharType c = operator[](i);
if (c >= '0' && c <= '9') {
integer *= 10;
integer += c - '0';
} else if (integer == 0 && c == '-') {
sign = -sign;
}
}
return integer * sign;
}
int64_t String::to_int64() const {
if (length() == 0)
return 0;
int to = (find(".") >= 0) ? find(".") : length();
int64_t integer = 0;
int64_t sign = 1;
for (int i = 0; i < to; i++) {
CharType c = operator[](i);
if (c >= '0' && c <= '9') {
integer *= 10;
integer += c - '0';
} else if (integer == 0 && c == '-') {
sign = -sign;
}
}
return integer * sign;
}
int String::to_int(const char *p_str, int p_len) {
int to = 0;
if (p_len >= 0)
to = p_len;
else {
while (p_str[to] != 0 && p_str[to] != '.')
to++;
}
int integer = 0;
int sign = 1;
for (int i = 0; i < to; i++) {
char c = p_str[i];
if (c >= '0' && c <= '9') {
integer *= 10;
integer += c - '0';
} else if (c == '-' && integer == 0) {
sign = -sign;
} else if (c != ' ')
break;
}
return integer * sign;
}
bool String::is_numeric() const {
if (length() == 0) {
return false;
};
int s = 0;
if (operator[](0) == '-') ++s;
bool dot = false;
for (int i = s; i < length(); i++) {
CharType c = operator[](i);
if (c == '.') {
if (dot) {
return false;
};
dot = true;
}
if (c < '0' || c > '9') {
return false;
};
};
return true; // TODO: Use the parser below for this instead
};
template <class C>
static double built_in_strtod(const C *string, /* A decimal ASCII floating-point number,
* optionally preceded by white space. Must
* have form "-I.FE-X", where I is the integer
* part of the mantissa, F is the fractional
* part of the mantissa, and X is the
* exponent. Either of the signs may be "+",
* "-", or omitted. Either I or F may be
* omitted, or both. The decimal point isn't
* necessary unless F is present. The "E" may
* actually be an "e". E and X may both be
* omitted (but not just one). */
C **endPtr = NULL) /* If non-NULL, store terminating Cacter's
* address here. */
{
static const int maxExponent = 511; /* Largest possible base 10 exponent. Any
* exponent larger than this will already
* produce underflow or overflow, so there's
* no need to worry about additional digits.
*/
static const double powersOf10[] = { /* Table giving binary powers of 10. Entry */
10., /* is 10^2^i. Used to convert decimal */
100., /* exponents into floating-point numbers. */
1.0e4,
1.0e8,
1.0e16,
1.0e32,
1.0e64,
1.0e128,
1.0e256
};
int sign, expSign = false;
double fraction, dblExp;
const double *d;
const C *p;
int c;
int exp = 0; /* Exponent read from "EX" field. */
int fracExp = 0; /* Exponent that derives from the fractional
* part. Under normal circumstances, it is
* the negative of the number of digits in F.
* However, if I is very long, the last digits
* of I get dropped (otherwise a long I with a
* large negative exponent could cause an
* unnecessary overflow on I alone). In this
* case, fracExp is incremented one for each
* dropped digit. */
int mantSize; /* Number of digits in mantissa. */
int decPt; /* Number of mantissa digits BEFORE decimal
* point. */
const C *pExp; /* Temporarily holds location of exponent in
* string. */
/*
* Strip off leading blanks and check for a sign.
*/
p = string;
while (*p == ' ' || *p == '\t' || *p == '\n') {
p += 1;
}
if (*p == '-') {
sign = true;
p += 1;
} else {
if (*p == '+') {
p += 1;
}
sign = false;
}
/*
* Count the number of digits in the mantissa (including the decimal
* point), and also locate the decimal point.
*/
decPt = -1;
for (mantSize = 0;; mantSize += 1) {
c = *p;
if (!IS_DIGIT(c)) {
if ((c != '.') || (decPt >= 0)) {
break;
}
decPt = mantSize;
}
p += 1;
}
/*
* Now suck up the digits in the mantissa. Use two integers to collect 9
* digits each (this is faster than using floating-point). If the mantissa
* has more than 18 digits, ignore the extras, since they can't affect the
* value anyway.
*/
pExp = p;
p -= mantSize;
if (decPt < 0) {
decPt = mantSize;
} else {
mantSize -= 1; /* One of the digits was the point. */
}
if (mantSize > 18) {
fracExp = decPt - 18;
mantSize = 18;
} else {
fracExp = decPt - mantSize;
}
if (mantSize == 0) {
fraction = 0.0;
p = string;
goto done;
} else {
int frac1, frac2;
frac1 = 0;
for (; mantSize > 9; mantSize -= 1) {
c = *p;
p += 1;
if (c == '.') {
c = *p;
p += 1;
}
frac1 = 10 * frac1 + (c - '0');
}
frac2 = 0;
for (; mantSize > 0; mantSize -= 1) {
c = *p;
p += 1;
if (c == '.') {
c = *p;
p += 1;
}
frac2 = 10 * frac2 + (c - '0');
}
fraction = (1.0e9 * frac1) + frac2;
}
/*
* Skim off the exponent.
*/
p = pExp;
if ((*p == 'E') || (*p == 'e')) {
p += 1;
if (*p == '-') {
expSign = true;
p += 1;
} else {
if (*p == '+') {
p += 1;
}
expSign = false;
}
if (!IS_DIGIT(CharType(*p))) {
p = pExp;
goto done;
}
while (IS_DIGIT(CharType(*p))) {
exp = exp * 10 + (*p - '0');
p += 1;
}
}
if (expSign) {
exp = fracExp - exp;
} else {
exp = fracExp + exp;
}
/*
* Generate a floating-point number that represents the exponent. Do this
* by processing the exponent one bit at a time to combine many powers of
* 2 of 10. Then combine the exponent with the fraction.
*/
if (exp < 0) {
expSign = true;
exp = -exp;
} else {
expSign = false;
}
if (exp > maxExponent) {
exp = maxExponent;
WARN_PRINT("Exponent too high");
}
dblExp = 1.0;
for (d = powersOf10; exp != 0; exp >>= 1, ++d) {
if (exp & 01) {
dblExp *= *d;
}
}
if (expSign) {
fraction /= dblExp;
} else {
fraction *= dblExp;
}
done:
if (endPtr != NULL) {
*endPtr = (C *)p;
}
if (sign) {
return -fraction;
}
return fraction;
}
#define READING_SIGN 0
#define READING_INT 1
#define READING_DEC 2
#define READING_EXP 3
#define READING_DONE 4
double String::to_double(const char *p_str) {
#ifndef NO_USE_STDLIB
return built_in_strtod<char>(p_str);
//return atof(p_str); DOES NOT WORK ON ANDROID(??)
#else
return built_in_strtod<char>(p_str);
#endif
}
float String::to_float() const {
return to_double();
}
double String::to_double(const CharType *p_str, const CharType **r_end) {
return built_in_strtod<CharType>(p_str, (CharType **)r_end);
}
int64_t String::to_int(const CharType *p_str, int p_len) {
if (p_len == 0 || !p_str[0])
return 0;
///@todo make more exact so saving and loading does not lose precision
int64_t integer = 0;
int64_t sign = 1;
int reading = READING_SIGN;
const CharType *str = p_str;
const CharType *limit = &p_str[p_len];
while (*str && reading != READING_DONE && str != limit) {
CharType c = *(str++);
switch (reading) {
case READING_SIGN: {
if (c >= '0' && c <= '9') {
reading = READING_INT;
// let it fallthrough
} else if (c == '-') {
sign = -1;
reading = READING_INT;
break;
} else if (c == '+') {
sign = 1;
reading = READING_INT;
break;
} else {
break;
}
}
case READING_INT: {
if (c >= '0' && c <= '9') {
integer *= 10;
integer += c - '0';
} else {
reading = READING_DONE;
}
} break;
}
}
return sign * integer;
}
double String::to_double() const {
if (empty())
return 0;
#ifndef NO_USE_STDLIB
return built_in_strtod<CharType>(c_str());
//return wcstod(c_str(),NULL); DOES NOT WORK ON ANDROID :(
#else
return built_in_strtod<CharType>(c_str());
#endif
}
bool operator==(const char *p_chr, const String &p_str) {
return p_str == p_chr;
}
String operator+(const char *p_chr, const String &p_str) {
String tmp = p_chr;
tmp += p_str;
return tmp;
}
String operator+(CharType p_chr, const String &p_str) {
return (String::chr(p_chr) + p_str);
}
uint32_t String::hash(const char *p_cstr) {
uint32_t hashv = 5381;
uint32_t c;
while ((c = *p_cstr++))
hashv = ((hashv << 5) + hashv) + c; /* hash * 33 + c */
return hashv;
}
uint32_t String::hash(const char *p_cstr, int p_len) {
uint32_t hashv = 5381;
for (int i = 0; i < p_len; i++)
hashv = ((hashv << 5) + hashv) + p_cstr[i]; /* hash * 33 + c */
return hashv;
}
uint32_t String::hash(const CharType *p_cstr, int p_len) {
uint32_t hashv = 5381;
for (int i = 0; i < p_len; i++)
hashv = ((hashv << 5) + hashv) + p_cstr[i]; /* hash * 33 + c */
return hashv;
}
uint32_t String::hash(const CharType *p_cstr) {
uint32_t hashv = 5381;
uint32_t c;
while ((c = *p_cstr++))
hashv = ((hashv << 5) + hashv) + c; /* hash * 33 + c */
return hashv;
}
uint32_t String::hash() const {
/* simple djb2 hashing */
const CharType *chr = c_str();
uint32_t hashv = 5381;
uint32_t c;
while ((c = *chr++))
hashv = ((hashv << 5) + hashv) + c; /* hash * 33 + c */
return hashv;
}
uint64_t String::hash64() const {
/* simple djb2 hashing */
const CharType *chr = c_str();
uint64_t hashv = 5381;
uint64_t c;
while ((c = *chr++))
hashv = ((hashv << 5) + hashv) + c; /* hash * 33 + c */
return hashv;
}
String String::md5_text() const {
CharString cs = utf8();
MD5_CTX ctx;
MD5Init(&ctx);
MD5Update(&ctx, (unsigned char *)cs.ptr(), cs.length());
MD5Final(&ctx);
return String::md5(ctx.digest);
}
String String::sha256_text() const {
CharString cs = utf8();
unsigned char hash[32];
sha256_context ctx;
sha256_init(&ctx);
sha256_hash(&ctx, (unsigned char *)cs.ptr(), cs.length());
sha256_done(&ctx, hash);
return String::hex_encode_buffer(hash, 32);
}
Vector<uint8_t> String::md5_buffer() const {
CharString cs = utf8();
MD5_CTX ctx;
MD5Init(&ctx);
MD5Update(&ctx, (unsigned char *)cs.ptr(), cs.length());
MD5Final(&ctx);
Vector<uint8_t> ret;
ret.resize(16);
for (int i = 0; i < 16; i++) {
ret.write[i] = ctx.digest[i];
};
return ret;
};
Vector<uint8_t> String::sha256_buffer() const {
CharString cs = utf8();
unsigned char hash[32];
sha256_context ctx;
sha256_init(&ctx);
sha256_hash(&ctx, (unsigned char *)cs.ptr(), cs.length());
sha256_done(&ctx, hash);
Vector<uint8_t> ret;
ret.resize(32);
for (int i = 0; i < 32; i++) {
ret.write[i] = hash[i];
}
return ret;
}
String String::insert(int p_at_pos, const String &p_string) const {
if (p_at_pos < 0)
return *this;
if (p_at_pos > length())
p_at_pos = length();
String pre;
if (p_at_pos > 0)
pre = substr(0, p_at_pos);
String post;
if (p_at_pos < length())
post = substr(p_at_pos, length() - p_at_pos);
return pre + p_string + post;
}
String String::substr(int p_from, int p_chars) const {
if (empty() || p_from < 0 || p_from >= length() || p_chars <= 0)
return "";
if ((p_from + p_chars) > length()) {
p_chars = length() - p_from;
}
if (p_from == 0 && p_chars >= length()) {
return String(*this);
}
String s = String();
s.copy_from_unchecked(&c_str()[p_from], p_chars);
return s;
}
int String::find_last(const String &p_str) const {
int pos = -1;
int findfrom = 0;
int findres = -1;
while ((findres = find(p_str, findfrom)) != -1) {
pos = findres;
findfrom = pos + 1;
}
return pos;
}
int String::find(const String &p_str, int p_from) const {
if (p_from < 0)
return -1;
const int src_len = p_str.length();
const int len = length();
if (src_len == 0 || len == 0)
return -1; // won't find anything!
const CharType *src = c_str();
const CharType *str = p_str.c_str();
for (int i = p_from; i <= (len - src_len); i++) {
bool found = true;
for (int j = 0; j < src_len; j++) {
int read_pos = i + j;
if (read_pos >= len) {
ERR_PRINT("read_pos>=len");
return -1;
};
if (src[read_pos] != str[j]) {
found = false;
break;
}
}
if (found)
return i;
}
return -1;
}
int String::find(const char *p_str, int p_from) const {
if (p_from < 0)
return -1;
const int len = length();
if (len == 0)
return -1; // won't find anything!
const CharType *src = c_str();
int src_len = 0;
while (p_str[src_len] != '\0')
src_len++;
if (src_len == 1) {
const char needle = p_str[0];
for (int i = p_from; i < len; i++) {
if (src[i] == needle) {
return i;
}
}
} else {
for (int i = p_from; i <= (len - src_len); i++) {
bool found = true;
for (int j = 0; j < src_len; j++) {
int read_pos = i + j;
if (read_pos >= len) {
ERR_PRINT("read_pos>=len");
return -1;
};
if (src[read_pos] != p_str[j]) {
found = false;
break;
}
}
if (found)
return i;
}
}
return -1;
}
int String::find_char(CharType p_char, int p_from) const {
return _cowdata.find(p_char, p_from);
}
int String::findmk(const Vector<String> &p_keys, int p_from, int *r_key) const {
if (p_from < 0)
return -1;
if (p_keys.size() == 0)
return -1;
//int src_len=p_str.length();
const String *keys = &p_keys[0];
int key_count = p_keys.size();
int len = length();
if (len == 0)
return -1; // won't find anything!
const CharType *src = c_str();
for (int i = p_from; i < len; i++) {
bool found = true;
for (int k = 0; k < key_count; k++) {
found = true;
if (r_key)
*r_key = k;
const CharType *cmp = keys[k].c_str();
int l = keys[k].length();
for (int j = 0; j < l; j++) {
int read_pos = i + j;
if (read_pos >= len) {
found = false;
break;
};
if (src[read_pos] != cmp[j]) {
found = false;
break;
}
}
if (found)
break;
}
if (found)
return i;
}
return -1;
}
int String::findn(const String &p_str, int p_from) const {
if (p_from < 0)
return -1;
int src_len = p_str.length();
if (src_len == 0 || length() == 0)
return -1; // won't find anything!
const CharType *srcd = c_str();
for (int i = p_from; i <= (length() - src_len); i++) {
bool found = true;
for (int j = 0; j < src_len; j++) {
int read_pos = i + j;
if (read_pos >= length()) {
ERR_PRINT("read_pos>=length()");
return -1;
};
CharType src = _find_lower(srcd[read_pos]);
CharType dst = _find_lower(p_str[j]);
if (src != dst) {
found = false;
break;
}
}
if (found)
return i;
}
return -1;
}
int String::rfind(const String &p_str, int p_from) const {
// establish a limit
int limit = length() - p_str.length();
if (limit < 0)
return -1;
// establish a starting point
if (p_from < 0)
p_from = limit;
else if (p_from > limit)
p_from = limit;
int src_len = p_str.length();
int len = length();
if (src_len == 0 || len == 0)
return -1; // won't find anything!
const CharType *src = c_str();
for (int i = p_from; i >= 0; i--) {
bool found = true;
for (int j = 0; j < src_len; j++) {
int read_pos = i + j;
if (read_pos >= len) {
ERR_PRINT("read_pos>=len");
return -1;
};
if (src[read_pos] != p_str[j]) {
found = false;
break;
}
}
if (found)
return i;
}
return -1;
}
int String::rfindn(const String &p_str, int p_from) const {
// establish a limit
int limit = length() - p_str.length();
if (limit < 0)
return -1;
// establish a starting point
if (p_from < 0)
p_from = limit;
else if (p_from > limit)
p_from = limit;
int src_len = p_str.length();
int len = length();
if (src_len == 0 || len == 0)
return -1; // won't find anything!
const CharType *src = c_str();
for (int i = p_from; i >= 0; i--) {
bool found = true;
for (int j = 0; j < src_len; j++) {
int read_pos = i + j;
if (read_pos >= len) {
ERR_PRINT("read_pos>=len");
return -1;
};
CharType srcc = _find_lower(src[read_pos]);
CharType dstc = _find_lower(p_str[j]);
if (srcc != dstc) {
found = false;
break;
}
}
if (found)
return i;
}
return -1;
}
bool String::ends_with(const String &p_string) const {
int pos = find_last(p_string);
if (pos == -1)
return false;
return pos + p_string.length() == length();
}
bool String::begins_with(const String &p_string) const {
if (p_string.length() > length())
return false;
int l = p_string.length();
if (l == 0)
return true;
const CharType *src = &p_string[0];
const CharType *str = &operator[](0);
int i = 0;
for (; i < l; i++) {
if (src[i] != str[i])
return false;
}
// only if i == l the p_string matches the beginning
return i == l;
}
bool String::begins_with(const char *p_string) const {
int l = length();
if (l == 0 || !p_string)
return false;
const CharType *str = &operator[](0);
int i = 0;
while (*p_string && i < l) {
if (*p_string != str[i])
return false;
i++;
p_string++;
}
return *p_string == 0;
}
bool String::is_enclosed_in(const String &p_string) const {
return begins_with(p_string) && ends_with(p_string);
}
bool String::is_subsequence_of(const String &p_string) const {
return _base_is_subsequence_of(p_string, false);
}
bool String::is_subsequence_ofi(const String &p_string) const {
return _base_is_subsequence_of(p_string, true);
}
bool String::is_quoted() const {
return is_enclosed_in("\"") || is_enclosed_in("'");
}
bool String::_base_is_subsequence_of(const String &p_string, bool case_insensitive) const {
int len = length();
if (len == 0) {
// Technically an empty string is subsequence of any string
return true;
}
if (len > p_string.length()) {
return false;
}
const CharType *src = &operator[](0);
const CharType *tgt = &p_string[0];
for (; *src && *tgt; tgt++) {
bool match = false;
if (case_insensitive) {
CharType srcc = _find_lower(*src);
CharType tgtc = _find_lower(*tgt);
match = srcc == tgtc;
} else {
match = *src == *tgt;
}
if (match) {
src++;
if (!*src) {
return true;
}
}
}
return false;
}
Vector<String> String::bigrams() const {
int n_pairs = length() - 1;
Vector<String> b;
if (n_pairs <= 0) {
return b;
}
b.resize(n_pairs);
for (int i = 0; i < n_pairs; i++) {
b.write[i] = substr(i, 2);
}
return b;
}
// Similarity according to Sorensen-Dice coefficient
float String::similarity(const String &p_string) const {
if (operator==(p_string)) {
// Equal strings are totally similar
return 1.0f;
}
if (length() < 2 || p_string.length() < 2) {
// No way to calculate similarity without a single bigram
return 0.0f;
}
Vector<String> src_bigrams = bigrams();
Vector<String> tgt_bigrams = p_string.bigrams();
int src_size = src_bigrams.size();
int tgt_size = tgt_bigrams.size();
float sum = src_size + tgt_size;
float inter = 0;
for (int i = 0; i < src_size; i++) {
for (int j = 0; j < tgt_size; j++) {
if (src_bigrams[i] == tgt_bigrams[j]) {
inter++;
break;
}
}
}
return (2.0f * inter) / sum;
}
static bool _wildcard_match(const CharType *p_pattern, const CharType *p_string, bool p_case_sensitive) {
switch (*p_pattern) {
case '\0':
return !*p_string;
case '*':
return _wildcard_match(p_pattern + 1, p_string, p_case_sensitive) || (*p_string && _wildcard_match(p_pattern, p_string + 1, p_case_sensitive));
case '?':
return *p_string && (*p_string != '.') && _wildcard_match(p_pattern + 1, p_string + 1, p_case_sensitive);
default:
return (p_case_sensitive ? (*p_string == *p_pattern) : (_find_upper(*p_string) == _find_upper(*p_pattern))) && _wildcard_match(p_pattern + 1, p_string + 1, p_case_sensitive);
}
}
bool String::match(const String &p_wildcard) const {
if (!p_wildcard.length() || !length())
return false;
return _wildcard_match(p_wildcard.c_str(), c_str(), true);
}
bool String::matchn(const String &p_wildcard) const {
if (!p_wildcard.length() || !length())
return false;
return _wildcard_match(p_wildcard.c_str(), c_str(), false);
}
String String::format(const Variant &values, String placeholder) const {
String new_string = String(this->ptr());
if (values.get_type() == Variant::ARRAY) {
Array values_arr = values;
for (int i = 0; i < values_arr.size(); i++) {
String i_as_str = String::num_int64(i);
if (values_arr[i].get_type() == Variant::ARRAY) { //Array in Array structure [["name","RobotGuy"],[0,"godot"],["strength",9000.91]]
Array value_arr = values_arr[i];
if (value_arr.size() == 2) {
Variant v_key = value_arr[0];
String key = v_key;
if (key.left(1) == "\"" && key.right(key.length() - 1) == "\"") {
key = key.substr(1, key.length() - 2);
}
Variant v_val = value_arr[1];
String val = v_val;
if (val.left(1) == "\"" && val.right(val.length() - 1) == "\"") {
val = val.substr(1, val.length() - 2);
}
new_string = new_string.replace(placeholder.replace("_", key), val);
} else {
ERR_PRINT(String("STRING.format Inner Array size != 2 ").ascii().get_data());
}
} else { //Array structure ["RobotGuy","Logis","rookie"]
Variant v_val = values_arr[i];
String val = v_val;
if (val.left(1) == "\"" && val.right(val.length() - 1) == "\"") {
val = val.substr(1, val.length() - 2);
}
if (placeholder.find("_") > -1) {
new_string = new_string.replace(placeholder.replace("_", i_as_str), val);
} else {
new_string = new_string.replace_first(placeholder, val);
}
}
}
} else if (values.get_type() == Variant::DICTIONARY) {
Dictionary d = values;
List<Variant> keys;
d.get_key_list(&keys);
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
String key = E->get();
String val = d[E->get()];
if (key.left(1) == "\"" && key.right(key.length() - 1) == "\"") {
key = key.substr(1, key.length() - 2);
}
if (val.left(1) == "\"" && val.right(val.length() - 1) == "\"") {
val = val.substr(1, val.length() - 2);
}
new_string = new_string.replace(placeholder.replace("_", key), val);
}
} else {
ERR_PRINT(String("Invalid type: use Array or Dictionary.").ascii().get_data());
}
return new_string;
}
String String::replace(const String &p_key, const String &p_with) const {
String new_string;
int search_from = 0;
int result = 0;
while ((result = find(p_key, search_from)) >= 0) {
new_string += substr(search_from, result - search_from);
new_string += p_with;
search_from = result + p_key.length();
}
if (search_from == 0) {
return *this;
}
new_string += substr(search_from, length() - search_from);
return new_string;
}
String String::replace(const char *p_key, const char *p_with) const {
String new_string;
int search_from = 0;
int result = 0;
while ((result = find(p_key, search_from)) >= 0) {
new_string += substr(search_from, result - search_from);
new_string += p_with;
int k = 0;
while (p_key[k] != '\0')
k++;
search_from = result + k;
}
if (search_from == 0) {
return *this;
}
new_string += substr(search_from, length() - search_from);
return new_string;
}
String String::replace_first(const String &p_key, const String &p_with) const {
String new_string;
int search_from = 0;
int result = 0;
while ((result = find(p_key, search_from)) >= 0) {
new_string += substr(search_from, result - search_from);
new_string += p_with;
search_from = result + p_key.length();
break;
}
if (search_from == 0) {
return *this;
}
new_string += substr(search_from, length() - search_from);
return new_string;
}
String String::replacen(const String &p_key, const String &p_with) const {
String new_string;
int search_from = 0;
int result = 0;
while ((result = findn(p_key, search_from)) >= 0) {
new_string += substr(search_from, result - search_from);
new_string += p_with;
search_from = result + p_key.length();
}
if (search_from == 0) {
return *this;
}
new_string += substr(search_from, length() - search_from);
return new_string;
}
String String::left(int p_pos) const {
if (p_pos <= 0)
return "";
if (p_pos >= length())
return *this;
return substr(0, p_pos);
}
String String::right(int p_pos) const {
if (p_pos >= length())
return "";
if (p_pos <= 0)
return *this;
return substr(p_pos, (length() - p_pos));
}
CharType String::ord_at(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx, length(), 0);
return operator[](p_idx);
}
String String::dedent() const {
String new_string;
String indent;
bool has_indent = false;
bool has_text = false;
int line_start = 0;
int indent_stop = -1;
for (int i = 0; i < length(); i++) {
CharType c = operator[](i);
if (c == '\n') {
if (has_text)
new_string += substr(indent_stop, i - indent_stop);
new_string += "\n";
has_text = false;
line_start = i + 1;
indent_stop = -1;
} else if (!has_text) {
if (c > 32) {
has_text = true;
if (!has_indent) {
has_indent = true;
indent = substr(line_start, i - line_start);
indent_stop = i;
}
}
if (has_indent && indent_stop < 0) {
int j = i - line_start;
if (j >= indent.length() || c != indent[j])
indent_stop = i;
}
}
}
if (has_text)
new_string += substr(indent_stop, length() - indent_stop);
return new_string;
}
String String::strip_edges(bool left, bool right) const {
int len = length();
int beg = 0, end = len;
if (left) {
for (int i = 0; i < len; i++) {
if (operator[](i) <= 32)
beg++;
else
break;
}
}
if (right) {
for (int i = (int)(len - 1); i >= 0; i--) {
if (operator[](i) <= 32)
end--;
else
break;
}
}
if (beg == 0 && end == len)
return *this;
return substr(beg, end - beg);
}
String String::strip_escapes() const {
int len = length();
int beg = 0, end = len;
for (int i = 0; i < length(); i++) {
if (operator[](i) <= 31)
beg++;
else
break;
}
for (int i = (int)(length() - 1); i >= 0; i--) {
if (operator[](i) <= 31)
end--;
else
break;
}
if (beg == 0 && end == len)
return *this;
return substr(beg, end - beg);
}
String String::lstrip(const String &p_chars) const {
int len = length();
int beg;
for (beg = 0; beg < len; beg++) {
if (p_chars.find_char(get(beg)) == -1)
break;
}
if (beg == 0)
return *this;
return substr(beg, len - beg);
}
String String::rstrip(const String &p_chars) const {
int len = length();
int end;
for (end = len - 1; end >= 0; end--) {
if (p_chars.find_char(get(end)) == -1)
break;
}
if (end == len - 1)
return *this;
return substr(0, end + 1);
}
String String::simplify_path() const {
String s = *this;
String drive;
if (s.begins_with("local://")) {
drive = "local://";
s = s.substr(8, s.length());
} else if (s.begins_with("res://")) {
drive = "res://";
s = s.substr(6, s.length());
} else if (s.begins_with("user://")) {
drive = "user://";
s = s.substr(7, s.length());
} else if (s.begins_with("/") || s.begins_with("\\")) {
drive = s.substr(0, 1);
s = s.substr(1, s.length() - 1);
} else {
int p = s.find(":/");
if (p == -1)
p = s.find(":\\");
if (p != -1 && p < s.find("/")) {
drive = s.substr(0, p + 2);
s = s.substr(p + 2, s.length());
}
}
s = s.replace("\\", "/");
while (true) { // in case of using 2 or more slash
String compare = s.replace("//", "/");
if (s == compare)
break;
else
s = compare;
}
Vector<String> dirs = s.split("/", false);
for (int i = 0; i < dirs.size(); i++) {
String d = dirs[i];
if (d == ".") {
dirs.remove(i);
i--;
} else if (d == "..") {
if (i == 0) {
dirs.remove(i);
i--;
} else {
dirs.remove(i);
dirs.remove(i - 1);
i -= 2;
}
}
}
s = "";
for (int i = 0; i < dirs.size(); i++) {
if (i > 0)
s += "/";
s += dirs[i];
}
return drive + s;
}
static int _humanize_digits(int p_num) {
if (p_num < 10)
return 2;
else if (p_num < 100)
return 2;
else if (p_num < 1024)
return 1;
else
return 0;
}
String String::humanize_size(size_t p_size) {
uint64_t _div = 1;
static const char *prefix[] = { " Bytes", " KB", " MB", " GB", "TB", " PB", "HB", "" };
int prefix_idx = 0;
while (p_size > (_div * 1024) && prefix[prefix_idx][0]) {
_div *= 1024;
prefix_idx++;
}
int digits = prefix_idx > 0 ? _humanize_digits(p_size / _div) : 0;
double divisor = prefix_idx > 0 ? _div : 1;
return String::num(p_size / divisor, digits) + prefix[prefix_idx];
}
bool String::is_abs_path() const {
if (length() > 1)
return (operator[](0) == '/' || operator[](0) == '\\' || find(":/") != -1 || find(":\\") != -1);
else if ((length()) == 1)
return (operator[](0) == '/' || operator[](0) == '\\');
else
return false;
}
bool String::is_valid_identifier() const {
int len = length();
if (len == 0)
return false;
const wchar_t *str = &operator[](0);
for (int i = 0; i < len; i++) {
if (i == 0) {
if (str[0] >= '0' && str[0] <= '9')
return false; // no start with number plz
}
bool valid_char = (str[i] >= '0' && str[i] <= '9') || (str[i] >= 'a' && str[i] <= 'z') || (str[i] >= 'A' && str[i] <= 'Z') || str[i] == '_';
if (!valid_char)
return false;
}
return true;
}
//kind of poor should be rewritten properly
String String::word_wrap(int p_chars_per_line) const {
int from = 0;
int last_space = 0;
String ret;
for (int i = 0; i < length(); i++) {
if (i - from >= p_chars_per_line) {
if (last_space == -1) {
ret += substr(from, i - from + 1) + "\n";
} else {
ret += substr(from, last_space - from) + "\n";
i = last_space; //rewind
}
from = i + 1;
last_space = -1;
} else if (operator[](i) == ' ' || operator[](i) == '\t') {
last_space = i;
} else if (operator[](i) == '\n') {
ret += substr(from, i - from) + "\n";
from = i + 1;
last_space = -1;
}
}
if (from < length()) {
ret += substr(from, length());
}
return ret;
}
String String::http_escape() const {
const CharString temp = utf8();
String res;
for (int i = 0; i < temp.length(); ++i) {
char ord = temp[i];
if (ord == '.' || ord == '-' || ord == '_' || ord == '~' ||
(ord >= 'a' && ord <= 'z') ||
(ord >= 'A' && ord <= 'Z') ||
(ord >= '0' && ord <= '9')) {
res += ord;
} else {
char h_Val[3];
#if defined(__GNUC__) || defined(_MSC_VER)
snprintf(h_Val, 3, "%hhX", ord);
#else
sprintf(h_Val, "%hhX", ord);
#endif
res += "%";
res += h_Val;
}
}
return res;
}
String String::http_unescape() const {
String res;
for (int i = 0; i < length(); ++i) {
if (ord_at(i) == '%' && i + 2 < length()) {
CharType ord1 = ord_at(i + 1);
if ((ord1 >= '0' && ord1 <= '9') || (ord1 >= 'A' && ord1 <= 'Z')) {
CharType ord2 = ord_at(i + 2);
if ((ord2 >= '0' && ord2 <= '9') || (ord2 >= 'A' && ord2 <= 'Z')) {
char bytes[2] = { (char)ord1, (char)ord2 };
res += (char)strtol(bytes, NULL, 16);
i += 2;
}
} else {
res += ord_at(i);
}
} else {
res += ord_at(i);
}
}
return String::utf8(res.ascii());
}
String String::c_unescape() const {
String escaped = *this;
escaped = escaped.replace("\\a", "\a");
escaped = escaped.replace("\\b", "\b");
escaped = escaped.replace("\\f", "\f");
escaped = escaped.replace("\\n", "\n");
escaped = escaped.replace("\\r", "\r");
escaped = escaped.replace("\\t", "\t");
escaped = escaped.replace("\\v", "\v");
escaped = escaped.replace("\\'", "\'");
escaped = escaped.replace("\\\"", "\"");
escaped = escaped.replace("\\?", "\?");
escaped = escaped.replace("\\\\", "\\");
return escaped;
}
String String::c_escape() const {
String escaped = *this;
escaped = escaped.replace("\\", "\\\\");
escaped = escaped.replace("\a", "\\a");
escaped = escaped.replace("\b", "\\b");
escaped = escaped.replace("\f", "\\f");
escaped = escaped.replace("\n", "\\n");
escaped = escaped.replace("\r", "\\r");
escaped = escaped.replace("\t", "\\t");
escaped = escaped.replace("\v", "\\v");
escaped = escaped.replace("\'", "\\'");
escaped = escaped.replace("\?", "\\?");
escaped = escaped.replace("\"", "\\\"");
return escaped;
}
String String::c_escape_multiline() const {
String escaped = *this;
escaped = escaped.replace("\\", "\\\\");
escaped = escaped.replace("\"", "\\\"");
return escaped;
}
String String::json_escape() const {
String escaped = *this;
escaped = escaped.replace("\\", "\\\\");
escaped = escaped.replace("\b", "\\b");
escaped = escaped.replace("\f", "\\f");
escaped = escaped.replace("\n", "\\n");
escaped = escaped.replace("\r", "\\r");
escaped = escaped.replace("\t", "\\t");
escaped = escaped.replace("\v", "\\v");
escaped = escaped.replace("\"", "\\\"");
return escaped;
}
String String::xml_escape(bool p_escape_quotes) const {
String str = *this;
str = str.replace("&", "&amp;");
str = str.replace("<", "&lt;");
str = str.replace(">", "&gt;");
if (p_escape_quotes) {
str = str.replace("'", "&apos;");
str = str.replace("\"", "&quot;");
}
/*
for (int i=1;i<32;i++) {
char chr[2]={i,0};
str=str.replace(chr,"&#"+String::num(i)+";");
}*/
return str;
}
static _FORCE_INLINE_ int _xml_unescape(const CharType *p_src, int p_src_len, CharType *p_dst) {
int len = 0;
while (p_src_len) {
if (*p_src == '&') {
int eat = 0;
if (p_src_len >= 4 && p_src[1] == '#') {
CharType c = 0;
for (int i = 2; i < p_src_len; i++) {
eat = i + 1;
CharType ct = p_src[i];
if (ct == ';') {
break;
} else if (ct >= '0' && ct <= '9') {
ct = ct - '0';
} else if (ct >= 'a' && ct <= 'f') {
ct = (ct - 'a') + 10;
} else if (ct >= 'A' && ct <= 'F') {
ct = (ct - 'A') + 10;
} else {
continue;
}
c <<= 4;
c |= ct;
}
if (p_dst)
*p_dst = c;
} else if (p_src_len >= 4 && p_src[1] == 'g' && p_src[2] == 't' && p_src[3] == ';') {
if (p_dst)
*p_dst = '>';
eat = 4;
} else if (p_src_len >= 4 && p_src[1] == 'l' && p_src[2] == 't' && p_src[3] == ';') {
if (p_dst)
*p_dst = '<';
eat = 4;
} else if (p_src_len >= 5 && p_src[1] == 'a' && p_src[2] == 'm' && p_src[3] == 'p' && p_src[4] == ';') {
if (p_dst)
*p_dst = '&';
eat = 5;
} else if (p_src_len >= 6 && p_src[1] == 'q' && p_src[2] == 'u' && p_src[3] == 'o' && p_src[4] == 't' && p_src[5] == ';') {
if (p_dst)
*p_dst = '"';
eat = 6;
} else if (p_src_len >= 6 && p_src[1] == 'a' && p_src[2] == 'p' && p_src[3] == 'o' && p_src[4] == 's' && p_src[5] == ';') {
if (p_dst)
*p_dst = '\'';
eat = 6;
} else {
if (p_dst)
*p_dst = *p_src;
eat = 1;
}
if (p_dst)
p_dst++;
len++;
p_src += eat;
p_src_len -= eat;
} else {
if (p_dst) {
*p_dst = *p_src;
p_dst++;
}
len++;
p_src++;
p_src_len--;
}
}
return len;
}
String String::xml_unescape() const {
String str;
int l = length();
int len = _xml_unescape(c_str(), l, NULL);
if (len == 0)
return String();
str.resize(len + 1);
_xml_unescape(c_str(), l, str.ptrw());
str[len] = 0;
return str;
}
String String::pad_decimals(int p_digits) const {
String s = *this;
int c = s.find(".");
if (c == -1) {
if (p_digits <= 0) {
return s;
}
s += ".";
c = s.length() - 1;
} else {
if (p_digits <= 0) {
return s.substr(0, c);
}
}
if (s.length() - (c + 1) > p_digits) {
s = s.substr(0, c + p_digits + 1);
} else {
while (s.length() - (c + 1) < p_digits) {
s += "0";
}
}
return s;
}
String String::pad_zeros(int p_digits) const {
String s = *this;
int end = s.find(".");
if (end == -1) {
end = s.length();
}
if (end == 0)
return s;
int begin = 0;
while (begin < end && (s[begin] < '0' || s[begin] > '9')) {
begin++;
}
if (begin >= end)
return s;
while (end - begin < p_digits) {
s = s.insert(begin, "0");
end++;
}
return s;
}
String String::trim_prefix(const String &p_prefix) const {
String s = *this;
if (s.begins_with(p_prefix)) {
return s.substr(p_prefix.length(), s.length() - p_prefix.length());
}
return s;
}
String String::trim_suffix(const String &p_suffix) const {
String s = *this;
if (s.ends_with(p_suffix)) {
return s.substr(0, s.length() - p_suffix.length());
}
return s;
}
bool String::is_valid_integer() const {
int len = length();
if (len == 0)
return false;
int from = 0;
if (len != 1 && (operator[](0) == '+' || operator[](0) == '-'))
from++;
for (int i = from; i < len; i++) {
if (operator[](i) < '0' || operator[](i) > '9')
return false; // no start with number plz
}
return true;
}
bool String::is_valid_hex_number(bool p_with_prefix) const {
int len = length();
if (len == 0)
return false;
int from = 0;
if (len != 1 && (operator[](0) == '+' || operator[](0) == '-'))
from++;
if (p_with_prefix) {
if (len < 3)
return false;
if (operator[](from) != '0' || operator[](from + 1) != 'x') {
return false;
}
from += 2;
}
for (int i = from; i < len; i++) {
CharType c = operator[](i);
if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))
continue;
return false;
}
return true;
};
bool String::is_valid_float() const {
int len = length();
if (len == 0)
return false;
int from = 0;
if (operator[](0) == '+' || operator[](0) == '-') {
from++;
}
bool exponent_found = false;
bool period_found = false;
bool sign_found = false;
bool exponent_values_found = false;
bool numbers_found = false;
for (int i = from; i < len; i++) {
if (operator[](i) >= '0' && operator[](i) <= '9') {
if (exponent_found)
exponent_values_found = true;
else
numbers_found = true;
} else if (numbers_found && !exponent_found && operator[](i) == 'e') {
exponent_found = true;
} else if (!period_found && !exponent_found && operator[](i) == '.') {
period_found = true;
} else if ((operator[](i) == '-' || operator[](i) == '+') && exponent_found && !exponent_values_found && !sign_found) {
sign_found = true;
} else
return false; // no start with number plz
}
return numbers_found;
}
String String::path_to_file(const String &p_path) const {
String src = this->replace("\\", "/").get_base_dir();
String dst = p_path.replace("\\", "/").get_base_dir();
String rel = src.path_to(dst);
if (rel == dst) // failed
return p_path;
else
return rel + p_path.get_file();
}
String String::path_to(const String &p_path) const {
String src = this->replace("\\", "/");
String dst = p_path.replace("\\", "/");
if (!src.ends_with("/"))
src += "/";
if (!dst.ends_with("/"))
dst += "/";
String base;
if (src.begins_with("res://") && dst.begins_with("res://")) {
base = "res:/";
src = src.replace("res://", "/");
dst = dst.replace("res://", "/");
} else if (src.begins_with("user://") && dst.begins_with("user://")) {
base = "user:/";
src = src.replace("user://", "/");
dst = dst.replace("user://", "/");
} else if (src.begins_with("/") && dst.begins_with("/")) {
//nothing
} else {
//dos style
String src_begin = src.get_slicec('/', 0);
String dst_begin = dst.get_slicec('/', 0);
if (src_begin != dst_begin)
return p_path; //impossible to do this
base = src_begin;
src = src.substr(src_begin.length(), src.length());
dst = dst.substr(dst_begin.length(), dst.length());
}
//remove leading and trailing slash and split
Vector<String> src_dirs = src.substr(1, src.length() - 2).split("/");
Vector<String> dst_dirs = dst.substr(1, dst.length() - 2).split("/");
//find common parent
int common_parent = 0;
while (true) {
if (src_dirs.size() == common_parent)
break;
if (dst_dirs.size() == common_parent)
break;
if (src_dirs[common_parent] != dst_dirs[common_parent])
break;
common_parent++;
}
common_parent--;
String dir;
for (int i = src_dirs.size() - 1; i > common_parent; i--) {
dir += "../";
}
for (int i = common_parent + 1; i < dst_dirs.size(); i++) {
dir += dst_dirs[i] + "/";
}
if (dir.length() == 0)
dir = "./";
return dir;
}
bool String::is_valid_html_color() const {
return Color::html_is_valid(*this);
}
bool String::is_valid_ip_address() const {
if (find(":") >= 0) {
Vector<String> ip = split(":");
for (int i = 0; i < ip.size(); i++) {
String n = ip[i];
if (n.empty())
continue;
if (n.is_valid_hex_number(false)) {
int nint = n.hex_to_int(false);
if (nint < 0 || nint > 0xffff)
return false;
continue;
};
if (!n.is_valid_ip_address())
return false;
};
} else {
Vector<String> ip = split(".");
if (ip.size() != 4)
return false;
for (int i = 0; i < ip.size(); i++) {
String n = ip[i];
if (!n.is_valid_integer())
return false;
int val = n.to_int();
if (val < 0 || val > 255)
return false;
}
};
return true;
}
bool String::is_resource_file() const {
return begins_with("res://") && find("::") == -1;
}
bool String::is_rel_path() const {
return !is_abs_path();
}
String String::get_base_dir() const {
int basepos = find("://");
String rs;
String base;
if (basepos != -1) {
int end = basepos + 3;
rs = substr(end, length());
base = substr(0, end);
} else {
if (begins_with("/")) {
rs = substr(1, length());
base = "/";
} else {
rs = *this;
}
}
int sep = MAX(rs.find_last("/"), rs.find_last("\\"));
if (sep == -1)
return base;
return base + rs.substr(0, sep);
}
String String::get_file() const {
int sep = MAX(find_last("/"), find_last("\\"));
if (sep == -1)
return *this;
return substr(sep + 1, length());
}
String String::get_extension() const {
int pos = find_last(".");
if (pos < 0 || pos < MAX(find_last("/"), find_last("\\")))
return "";
return substr(pos + 1, length());
}
String String::plus_file(const String &p_file) const {
if (empty())
return p_file;
if (operator[](length() - 1) == '/' || (p_file.size() > 0 && p_file.operator[](0) == '/'))
return *this + p_file;
return *this + "/" + p_file;
}
String String::percent_encode() const {
CharString cs = utf8();
String encoded;
for (int i = 0; i < cs.length(); i++) {
uint8_t c = cs[i];
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '-' || c == '_' || c == '~' || c == '.') {
char p[2] = { (char)c, 0 };
encoded += p;
} else {
char p[4] = { '%', 0, 0, 0 };
static const char hex[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
p[1] = hex[c >> 4];
p[2] = hex[c & 0xF];
encoded += p;
}
}
return encoded;
}
String String::percent_decode() const {
CharString pe;
CharString cs = utf8();
for (int i = 0; i < cs.length(); i++) {
uint8_t c = cs[i];
if (c == '%' && i < length() - 2) {
uint8_t a = LOWERCASE(cs[i + 1]);
uint8_t b = LOWERCASE(cs[i + 2]);
c = 0;
if (a >= '0' && a <= '9')
c = (a - '0') << 4;
else if (a >= 'a' && a <= 'f')
c = (a - 'a' + 10) << 4;
else
continue;
uint8_t d = 0;
if (b >= '0' && b <= '9')
d = (b - '0');
else if (b >= 'a' && b <= 'f')
d = (b - 'a' + 10);
else
continue;
c += d;
i += 2;
}
pe += c;
}
return String::utf8(pe.ptr());
}
String String::get_basename() const {
int pos = find_last(".");
if (pos < 0 || pos < MAX(find_last("/"), find_last("\\")))
return *this;
return substr(0, pos);
}
String itos(int64_t p_val) {
return String::num_int64(p_val);
}
String rtos(double p_val) {
return String::num(p_val);
}
String rtoss(double p_val) {
return String::num_scientific(p_val);
}
// Right-pad with a character.
String String::rpad(int min_length, const String &character) const {
String s = *this;
int padding = min_length - s.length();
if (padding > 0) {
for (int i = 0; i < padding; i++)
s = s + character;
}
return s;
}
// Left-pad with a character.
String String::lpad(int min_length, const String &character) const {
String s = *this;
int padding = min_length - s.length();
if (padding > 0) {
for (int i = 0; i < padding; i++)
s = character + s;
}
return s;
}
// sprintf is implemented in GDScript via:
// "fish %s pie" % "frog"
// "fish %s %d pie" % ["frog", 12]
// In case of an error, the string returned is the error description and "error" is true.
String String::sprintf(const Array &values, bool *error) const {
String formatted;
CharType *self = (CharType *)c_str();
bool in_format = false;
int value_index = 0;
int min_chars = 0;
int min_decimals = 0;
bool in_decimals = false;
bool pad_with_zeroes = false;
bool left_justified = false;
bool show_sign = false;
*error = true;
for (; *self; self++) {
const CharType c = *self;
if (in_format) { // We have % - lets see what else we get.
switch (c) {
case '%': { // Replace %% with %
formatted += chr(c);
in_format = false;
break;
}
case 'd': // Integer (signed)
case 'o': // Octal
case 'x': // Hexadecimal (lowercase)
case 'X': { // Hexadecimal (uppercase)
if (value_index >= values.size()) {
return "not enough arguments for format string";
}
if (!values[value_index].is_num()) {
return "a number is required";
}
int64_t value = values[value_index];
int base = 16;
bool capitalize = false;
switch (c) {
case 'd': base = 10; break;
case 'o': base = 8; break;
case 'x': break;
case 'X':
base = 16;
capitalize = true;
break;
}
// Get basic number.
String str = String::num_int64(ABS(value), base, capitalize);
int number_len = str.length();
// Padding.
String pad_char = pad_with_zeroes ? String("0") : String(" ");
if (left_justified) {
str = str.rpad(min_chars, pad_char);
} else {
str = str.lpad(min_chars, pad_char);
}
// Sign.
if (show_sign && value >= 0) {
str = str.insert(pad_with_zeroes ? 0 : str.length() - number_len, "+");
} else if (value < 0) {
str = str.insert(pad_with_zeroes ? 0 : str.length() - number_len, "-");
}
formatted += str;
++value_index;
in_format = false;
break;
}
case 'f': { // Float
if (value_index >= values.size()) {
return "not enough arguments for format string";
}
if (!values[value_index].is_num()) {
return "a number is required";
}
double value = values[value_index];
String str = String::num(value, min_decimals);
// Pad decimals out.
str = str.pad_decimals(min_decimals);
// Show sign
if (show_sign && str.left(1) != "-") {
str = str.insert(0, "+");
}
// Padding
if (left_justified) {
str = str.rpad(min_chars);
} else {
str = str.lpad(min_chars);
}
formatted += str;
++value_index;
in_format = false;
break;
}
case 's': { // String
if (value_index >= values.size()) {
return "not enough arguments for format string";
}
String str = values[value_index];
// Padding.
if (left_justified) {
str = str.rpad(min_chars);
} else {
str = str.lpad(min_chars);
}
formatted += str;
++value_index;
in_format = false;
break;
}
case 'c': {
if (value_index >= values.size()) {
return "not enough arguments for format string";
}
// Convert to character.
String str;
if (values[value_index].is_num()) {
int value = values[value_index];
if (value < 0) {
return "unsigned byte integer is lower than maximum";
} else if (value > 255) {
return "unsigned byte integer is greater than maximum";
}
str = chr(values[value_index]);
} else if (values[value_index].get_type() == Variant::STRING) {
str = values[value_index];
if (str.length() != 1) {
return "%c requires number or single-character string";
}
} else {
return "%c requires number or single-character string";
}
// Padding.
if (left_justified) {
str = str.rpad(min_chars);
} else {
str = str.lpad(min_chars);
}
formatted += str;
++value_index;
in_format = false;
break;
}
case '-': { // Left justify
left_justified = true;
break;
}
case '+': { // Show + if positive.
show_sign = true;
break;
}
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': {
int n = c - '0';
if (in_decimals) {
min_decimals *= 10;
min_decimals += n;
} else {
if (c == '0' && min_chars == 0) {
pad_with_zeroes = true;
} else {
min_chars *= 10;
min_chars += n;
}
}
break;
}
case '.': { // Float separator.
if (in_decimals) {
return "too many decimal points in format";
}
in_decimals = true;
min_decimals = 0; // We want to add the value manually.
break;
}
case '*': { // Dynamic width, based on value.
if (value_index >= values.size()) {
return "not enough arguments for format string";
}
if (!values[value_index].is_num()) {
return "* wants number";
}
int size = values[value_index];
if (in_decimals) {
min_decimals = size;
} else {
min_chars = size;
}
++value_index;
break;
}
default: {
return "unsupported format character";
}
}
} else { // Not in format string.
switch (c) {
case '%':
in_format = true;
// Back to defaults:
min_chars = 0;
min_decimals = 6;
pad_with_zeroes = false;
left_justified = false;
show_sign = false;
in_decimals = false;
break;
default:
formatted += chr(c);
}
}
}
if (in_format) {
return "incomplete format";
}
if (value_index != values.size()) {
return "not all arguments converted during string formatting";
}
*error = false;
return formatted;
}
String String::quote(String quotechar) const {
return quotechar + *this + quotechar;
}
String String::unquote() const {
if (!is_quoted()) {
return *this;
}
return substr(1, length() - 2);
}
#ifdef TOOLS_ENABLED
String TTR(const String &p_text) {
if (TranslationServer::get_singleton()) {
return TranslationServer::get_singleton()->tool_translate(p_text);
}
return p_text;
}
#endif
String RTR(const String &p_text) {
if (TranslationServer::get_singleton()) {
String rtr = TranslationServer::get_singleton()->tool_translate(p_text);
if (rtr == String() || rtr == p_text) {
return TranslationServer::get_singleton()->translate(p_text);
} else {
return rtr;
}
}
return p_text;
}
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