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minetest/src/util/string.cpp
Desour 67068cfaf4 Get rid of wgettext
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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#include "string.h"
#include "pointer.h"
#include "numeric.h"
#include "log.h"
#include "hex.h"
#include "porting.h"
#include "translation.h"
#include <algorithm>
#include <array>
#include <sstream>
#include <iomanip>
#include <unordered_map>
#ifndef _WIN32
#include <iconv.h>
#else
#define _WIN32_WINNT 0x0501
#include <windows.h>
#endif
#ifndef _WIN32
static bool convert(const char *to, const char *from, char *outbuf,
size_t *outbuf_size, char *inbuf, size_t inbuf_size)
{
iconv_t cd = iconv_open(to, from);
char *inbuf_ptr = inbuf;
char *outbuf_ptr = outbuf;
size_t *inbuf_left_ptr = &inbuf_size;
const size_t old_outbuf_size = *outbuf_size;
size_t old_size = inbuf_size;
while (inbuf_size > 0) {
iconv(cd, &inbuf_ptr, inbuf_left_ptr, &outbuf_ptr, outbuf_size);
if (inbuf_size == old_size) {
iconv_close(cd);
return false;
}
old_size = inbuf_size;
}
iconv_close(cd);
*outbuf_size = old_outbuf_size - *outbuf_size;
return true;
}
#ifdef __ANDROID__
// On Android iconv disagrees how big a wchar_t is for whatever reason
const char *DEFAULT_ENCODING = "UTF-32LE";
#elif defined(__NetBSD__) || defined(__OpenBSD__)
// NetBSD does not allow "WCHAR_T" as a charset input to iconv.
#include <sys/endian.h>
#if BYTE_ORDER == BIG_ENDIAN
const char *DEFAULT_ENCODING = "UTF-32BE";
#else
const char *DEFAULT_ENCODING = "UTF-32LE";
#endif
#else
const char *DEFAULT_ENCODING = "WCHAR_T";
#endif
std::wstring utf8_to_wide(const std::string &input)
{
const size_t inbuf_size = input.length();
// maximum possible size, every character is sizeof(wchar_t) bytes
size_t outbuf_size = input.length() * sizeof(wchar_t);
char *inbuf = new char[inbuf_size]; // intentionally NOT null-terminated
memcpy(inbuf, input.c_str(), inbuf_size);
std::wstring out;
out.resize(outbuf_size / sizeof(wchar_t));
#if defined(__ANDROID__) || defined(__NetBSD__) || defined(__OpenBSD__)
static_assert(sizeof(wchar_t) == 4, "Unexpected wide char size");
#endif
char *outbuf = reinterpret_cast<char*>(&out[0]);
if (!convert(DEFAULT_ENCODING, "UTF-8", outbuf, &outbuf_size, inbuf, inbuf_size)) {
infostream << "Couldn't convert UTF-8 string 0x" << hex_encode(input)
<< " into wstring" << std::endl;
delete[] inbuf;
return L"<invalid UTF-8 string>";
}
delete[] inbuf;
out.resize(outbuf_size / sizeof(wchar_t));
return out;
}
std::string wide_to_utf8(const std::wstring &input)
{
const size_t inbuf_size = input.length() * sizeof(wchar_t);
// maximum possible size: utf-8 encodes codepoints using 1 up to 4 bytes
size_t outbuf_size = input.length() * 4;
char *inbuf = new char[inbuf_size]; // intentionally NOT null-terminated
memcpy(inbuf, input.c_str(), inbuf_size);
std::string out;
out.resize(outbuf_size);
if (!convert("UTF-8", DEFAULT_ENCODING, &out[0], &outbuf_size, inbuf, inbuf_size)) {
infostream << "Couldn't convert wstring 0x" << hex_encode(inbuf, inbuf_size)
<< " into UTF-8 string" << std::endl;
delete[] inbuf;
return "<invalid wide string>";
}
delete[] inbuf;
out.resize(outbuf_size);
return out;
}
#else // _WIN32
std::wstring utf8_to_wide(const std::string &input)
{
size_t outbuf_size = input.size() + 1;
wchar_t *outbuf = new wchar_t[outbuf_size];
memset(outbuf, 0, outbuf_size * sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8, 0, input.c_str(), input.size(),
outbuf, outbuf_size);
std::wstring out(outbuf);
delete[] outbuf;
return out;
}
std::string wide_to_utf8(const std::wstring &input)
{
size_t outbuf_size = (input.size() + 1) * 6;
char *outbuf = new char[outbuf_size];
memset(outbuf, 0, outbuf_size);
WideCharToMultiByte(CP_UTF8, 0, input.c_str(), input.size(),
outbuf, outbuf_size, NULL, NULL);
std::string out(outbuf);
delete[] outbuf;
return out;
}
#endif // _WIN32
std::string urlencode(const std::string &str)
{
// Encodes non-unreserved URI characters by a percent sign
// followed by two hex digits. See RFC 3986, section 2.3.
static const char url_hex_chars[] = "0123456789ABCDEF";
std::ostringstream oss(std::ios::binary);
for (unsigned char c : str) {
if (isalnum(c) || c == '-' || c == '.' || c == '_' || c == '~') {
oss << c;
} else {
oss << "%"
<< url_hex_chars[(c & 0xf0) >> 4]
<< url_hex_chars[c & 0x0f];
}
}
return oss.str();
}
std::string urldecode(const std::string &str)
{
// Inverse of urlencode
std::ostringstream oss(std::ios::binary);
for (u32 i = 0; i < str.size(); i++) {
unsigned char highvalue, lowvalue;
if (str[i] == '%' &&
hex_digit_decode(str[i+1], highvalue) &&
hex_digit_decode(str[i+2], lowvalue)) {
oss << (char) ((highvalue << 4) | lowvalue);
i += 2;
} else {
oss << str[i];
}
}
return oss.str();
}
u32 readFlagString(std::string str, const FlagDesc *flagdesc, u32 *flagmask)
{
u32 result = 0;
u32 mask = 0;
char *s = &str[0];
char *flagstr;
char *strpos = nullptr;
while ((flagstr = strtok_r(s, ",", &strpos))) {
s = nullptr;
while (*flagstr == ' ' || *flagstr == '\t')
flagstr++;
bool flagset = true;
if (!strncasecmp(flagstr, "no", 2)) {
flagset = false;
flagstr += 2;
}
for (int i = 0; flagdesc[i].name; i++) {
if (!strcasecmp(flagstr, flagdesc[i].name)) {
mask |= flagdesc[i].flag;
if (flagset)
result |= flagdesc[i].flag;
break;
}
}
}
if (flagmask)
*flagmask = mask;
return result;
}
std::string writeFlagString(u32 flags, const FlagDesc *flagdesc, u32 flagmask)
{
std::string result;
for (int i = 0; flagdesc[i].name; i++) {
if (flagmask & flagdesc[i].flag) {
if (!(flags & flagdesc[i].flag))
result += "no";
result += flagdesc[i].name;
result += ", ";
}
}
size_t len = result.length();
if (len >= 2)
result.erase(len - 2, 2);
return result;
}
size_t mystrlcpy(char *dst, const char *src, size_t size)
{
size_t srclen = strlen(src) + 1;
size_t copylen = MYMIN(srclen, size);
if (copylen > 0) {
memcpy(dst, src, copylen);
dst[copylen - 1] = '\0';
}
return srclen;
}
char *mystrtok_r(char *s, const char *sep, char **lasts)
{
char *t;
if (!s)
s = *lasts;
while (*s && strchr(sep, *s))
s++;
if (!*s)
return nullptr;
t = s;
while (*t) {
if (strchr(sep, *t)) {
*t++ = '\0';
break;
}
t++;
}
*lasts = t;
return s;
}
u64 read_seed(const char *str)
{
char *endptr;
u64 num;
if (str[0] == '0' && str[1] == 'x')
num = strtoull(str, &endptr, 16);
else
num = strtoull(str, &endptr, 10);
if (*endptr)
num = murmur_hash_64_ua(str, (int)strlen(str), 0x1337);
return num;
}
static bool parseHexColorString(const std::string &value, video::SColor &color,
unsigned char default_alpha)
{
u8 components[] = {0x00, 0x00, 0x00, default_alpha}; // R,G,B,A
size_t len = value.size();
bool short_form;
if (len == 9 || len == 7) // #RRGGBBAA or #RRGGBB
short_form = false;
else if (len == 5 || len == 4) // #RGBA or #RGB
short_form = true;
else
return false;
for (size_t pos = 1, cc = 0; pos < len; pos++, cc++) {
if (short_form) {
u8 d;
if (!hex_digit_decode(value[pos], d))
return false;
components[cc] = (d & 0xf) << 4 | (d & 0xf);
} else {
u8 d1, d2;
if (!hex_digit_decode(value[pos], d1) ||
!hex_digit_decode(value[pos+1], d2))
return false;
components[cc] = (d1 & 0xf) << 4 | (d2 & 0xf);
pos++; // skip the second digit -- it's already used
}
}
color.setRed(components[0]);
color.setGreen(components[1]);
color.setBlue(components[2]);
color.setAlpha(components[3]);
return true;
}
const static std::unordered_map<std::string, u32> s_named_colors = {
{"aliceblue", 0xf0f8ff},
{"antiquewhite", 0xfaebd7},
{"aqua", 0x00ffff},
{"aquamarine", 0x7fffd4},
{"azure", 0xf0ffff},
{"beige", 0xf5f5dc},
{"bisque", 0xffe4c4},
{"black", 00000000},
{"blanchedalmond", 0xffebcd},
{"blue", 0x0000ff},
{"blueviolet", 0x8a2be2},
{"brown", 0xa52a2a},
{"burlywood", 0xdeb887},
{"cadetblue", 0x5f9ea0},
{"chartreuse", 0x7fff00},
{"chocolate", 0xd2691e},
{"coral", 0xff7f50},
{"cornflowerblue", 0x6495ed},
{"cornsilk", 0xfff8dc},
{"crimson", 0xdc143c},
{"cyan", 0x00ffff},
{"darkblue", 0x00008b},
{"darkcyan", 0x008b8b},
{"darkgoldenrod", 0xb8860b},
{"darkgray", 0xa9a9a9},
{"darkgreen", 0x006400},
{"darkgrey", 0xa9a9a9},
{"darkkhaki", 0xbdb76b},
{"darkmagenta", 0x8b008b},
{"darkolivegreen", 0x556b2f},
{"darkorange", 0xff8c00},
{"darkorchid", 0x9932cc},
{"darkred", 0x8b0000},
{"darksalmon", 0xe9967a},
{"darkseagreen", 0x8fbc8f},
{"darkslateblue", 0x483d8b},
{"darkslategray", 0x2f4f4f},
{"darkslategrey", 0x2f4f4f},
{"darkturquoise", 0x00ced1},
{"darkviolet", 0x9400d3},
{"deeppink", 0xff1493},
{"deepskyblue", 0x00bfff},
{"dimgray", 0x696969},
{"dimgrey", 0x696969},
{"dodgerblue", 0x1e90ff},
{"firebrick", 0xb22222},
{"floralwhite", 0xfffaf0},
{"forestgreen", 0x228b22},
{"fuchsia", 0xff00ff},
{"gainsboro", 0xdcdcdc},
{"ghostwhite", 0xf8f8ff},
{"gold", 0xffd700},
{"goldenrod", 0xdaa520},
{"gray", 0x808080},
{"green", 0x008000},
{"greenyellow", 0xadff2f},
{"grey", 0x808080},
{"honeydew", 0xf0fff0},
{"hotpink", 0xff69b4},
{"indianred", 0xcd5c5c},
{"indigo", 0x4b0082},
{"ivory", 0xfffff0},
{"khaki", 0xf0e68c},
{"lavender", 0xe6e6fa},
{"lavenderblush", 0xfff0f5},
{"lawngreen", 0x7cfc00},
{"lemonchiffon", 0xfffacd},
{"lightblue", 0xadd8e6},
{"lightcoral", 0xf08080},
{"lightcyan", 0xe0ffff},
{"lightgoldenrodyellow", 0xfafad2},
{"lightgray", 0xd3d3d3},
{"lightgreen", 0x90ee90},
{"lightgrey", 0xd3d3d3},
{"lightpink", 0xffb6c1},
{"lightsalmon", 0xffa07a},
{"lightseagreen", 0x20b2aa},
{"lightskyblue", 0x87cefa},
{"lightslategray", 0x778899},
{"lightslategrey", 0x778899},
{"lightsteelblue", 0xb0c4de},
{"lightyellow", 0xffffe0},
{"lime", 0x00ff00},
{"limegreen", 0x32cd32},
{"linen", 0xfaf0e6},
{"magenta", 0xff00ff},
{"maroon", 0x800000},
{"mediumaquamarine", 0x66cdaa},
{"mediumblue", 0x0000cd},
{"mediumorchid", 0xba55d3},
{"mediumpurple", 0x9370db},
{"mediumseagreen", 0x3cb371},
{"mediumslateblue", 0x7b68ee},
{"mediumspringgreen", 0x00fa9a},
{"mediumturquoise", 0x48d1cc},
{"mediumvioletred", 0xc71585},
{"midnightblue", 0x191970},
{"mintcream", 0xf5fffa},
{"mistyrose", 0xffe4e1},
{"moccasin", 0xffe4b5},
{"navajowhite", 0xffdead},
{"navy", 0x000080},
{"oldlace", 0xfdf5e6},
{"olive", 0x808000},
{"olivedrab", 0x6b8e23},
{"orange", 0xffa500},
{"orangered", 0xff4500},
{"orchid", 0xda70d6},
{"palegoldenrod", 0xeee8aa},
{"palegreen", 0x98fb98},
{"paleturquoise", 0xafeeee},
{"palevioletred", 0xdb7093},
{"papayawhip", 0xffefd5},
{"peachpuff", 0xffdab9},
{"peru", 0xcd853f},
{"pink", 0xffc0cb},
{"plum", 0xdda0dd},
{"powderblue", 0xb0e0e6},
{"purple", 0x800080},
{"rebeccapurple", 0x663399},
{"red", 0xff0000},
{"rosybrown", 0xbc8f8f},
{"royalblue", 0x4169e1},
{"saddlebrown", 0x8b4513},
{"salmon", 0xfa8072},
{"sandybrown", 0xf4a460},
{"seagreen", 0x2e8b57},
{"seashell", 0xfff5ee},
{"sienna", 0xa0522d},
{"silver", 0xc0c0c0},
{"skyblue", 0x87ceeb},
{"slateblue", 0x6a5acd},
{"slategray", 0x708090},
{"slategrey", 0x708090},
{"snow", 0xfffafa},
{"springgreen", 0x00ff7f},
{"steelblue", 0x4682b4},
{"tan", 0xd2b48c},
{"teal", 0x008080},
{"thistle", 0xd8bfd8},
{"tomato", 0xff6347},
{"turquoise", 0x40e0d0},
{"violet", 0xee82ee},
{"wheat", 0xf5deb3},
{"white", 0xffffff},
{"whitesmoke", 0xf5f5f5},
{"yellow", 0xffff00},
{"yellowgreen", 0x9acd32}
};
static bool parseNamedColorString(const std::string &value, video::SColor &color)
{
std::string color_name;
std::string alpha_string;
/* If the string has a # in it, assume this is the start of a specified
* alpha value (if it isn't the string is invalid and the error will be
* caught later on, either because the color name won't be found or the
* alpha value will fail conversion)
*/
size_t alpha_pos = value.find('#');
if (alpha_pos != std::string::npos) {
color_name = value.substr(0, alpha_pos);
alpha_string = value.substr(alpha_pos + 1);
} else {
color_name = value;
}
color_name = lowercase(color_name);
auto it = s_named_colors.find(color_name);
if (it == s_named_colors.end())
return false;
u32 color_temp = it->second;
/* An empty string for alpha is ok (none of the color table entries
* have an alpha value either). Color strings without an alpha specified
* are interpreted as fully opaque
*/
if (!alpha_string.empty()) {
if (alpha_string.size() == 1) {
u8 d;
if (!hex_digit_decode(alpha_string[0], d))
return false;
color_temp |= ((d & 0xf) << 4 | (d & 0xf)) << 24;
} else if (alpha_string.size() == 2) {
u8 d1, d2;
if (!hex_digit_decode(alpha_string[0], d1)
|| !hex_digit_decode(alpha_string[1], d2))
return false;
color_temp |= ((d1 & 0xf) << 4 | (d2 & 0xf)) << 24;
} else {
return false;
}
} else {
color_temp |= 0xff << 24; // Fully opaque
}
color = video::SColor(color_temp);
return true;
}
bool parseColorString(const std::string &value, video::SColor &color, bool quiet,
unsigned char default_alpha)
{
bool success;
if (value[0] == '#')
success = parseHexColorString(value, color, default_alpha);
else
success = parseNamedColorString(value, color);
if (!success && !quiet)
errorstream << "Invalid color: \"" << value << "\"" << std::endl;
return success;
}
void str_replace(std::string &str, char from, char to)
{
std::replace(str.begin(), str.end(), from, to);
}
/* Translated strings have the following format:
* \x1bT marks the beginning of a translated string
* \x1bE marks its end
*
* \x1bF marks the beginning of an argument, and \x1bE its end.
*
* Arguments are *not* translated, as they may contain escape codes.
* Thus, if you want a translated argument, it should be inside \x1bT/\x1bE tags as well.
*
* This representation is chosen so that clients ignoring escape codes will
* see untranslated strings.
*
* For instance, suppose we have a string such as "@1 Wool" with the argument "White"
* The string will be sent as "\x1bT\x1bF\x1bTWhite\x1bE\x1bE Wool\x1bE"
* To translate this string, we extract what is inside \x1bT/\x1bE tags.
* When we notice the \x1bF tag, we recursively extract what is there up to the \x1bE end tag,
* translating it as well.
* We get the argument "White", translated, and create a template string with "@1" instead of it.
* We finally get the template "@1 Wool" that was used in the beginning, which we translate
* before filling it again.
*/
void translate_all(const std::wstring &s, size_t &i,
Translations *translations, std::wstring &res);
void translate_string(const std::wstring &s, Translations *translations,
const std::wstring &textdomain, size_t &i, std::wstring &res)
{
std::wostringstream output;
std::vector<std::wstring> args;
int arg_number = 1;
while (i < s.length()) {
// Not an escape sequence: just add the character.
if (s[i] != '\x1b') {
output.put(s[i]);
// The character is a literal '@'; add it twice
// so that it is not mistaken for an argument.
if (s[i] == L'@')
output.put(L'@');
++i;
continue;
}
// We have an escape sequence: locate it and its data
// It is either a single character, or it begins with '('
// and extends up to the following ')', with '\' as an escape character.
++i;
size_t start_index = i;
size_t length;
if (i == s.length()) {
length = 0;
} else if (s[i] == L'(') {
++i;
++start_index;
while (i < s.length() && s[i] != L')') {
if (s[i] == L'\\')
++i;
++i;
}
length = i - start_index;
++i;
if (i > s.length())
i = s.length();
} else {
++i;
length = 1;
}
std::wstring escape_sequence(s, start_index, length);
// The escape sequence is now reconstructed.
std::vector<std::wstring> parts = split(escape_sequence, L'@');
if (parts[0] == L"E") {
// "End of translation" escape sequence. We are done locating the string to translate.
break;
} else if (parts[0] == L"F") {
// "Start of argument" escape sequence.
// Recursively translate the argument, and add it to the argument list.
// Add an "@n" instead of the argument to the template to translate.
if (arg_number >= 10) {
errorstream << "Ignoring too many arguments to translation" << std::endl;
std::wstring arg;
translate_all(s, i, translations, arg);
args.push_back(arg);
continue;
}
output.put(L'@');
output << arg_number;
++arg_number;
std::wstring arg;
translate_all(s, i, translations, arg);
args.push_back(arg);
} else {
// This is an escape sequence *inside* the template string to translate itself.
// This should not happen, show an error message.
errorstream << "Ignoring escape sequence '"
<< wide_to_utf8(escape_sequence) << "' in translation" << std::endl;
}
}
std::wstring toutput;
// Translate the template.
if (translations != nullptr)
toutput = translations->getTranslation(
textdomain, output.str());
else
toutput = output.str();
// Put back the arguments in the translated template.
std::wostringstream result;
size_t j = 0;
while (j < toutput.length()) {
// Normal character, add it to output and continue.
if (toutput[j] != L'@' || j == toutput.length() - 1) {
result.put(toutput[j]);
++j;
continue;
}
++j;
// Literal escape for '@'.
if (toutput[j] == L'@') {
result.put(L'@');
++j;
continue;
}
// Here we have an argument; get its index and add the translated argument to the output.
int arg_index = toutput[j] - L'1';
++j;
if (0 <= arg_index && (size_t)arg_index < args.size()) {
result << args[arg_index];
} else {
// This is not allowed: show an error message
errorstream << "Ignoring out-of-bounds argument escape sequence in translation" << std::endl;
}
}
res = result.str();
}
void translate_all(const std::wstring &s, size_t &i,
Translations *translations, std::wstring &res)
{
std::wostringstream output;
while (i < s.length()) {
// Not an escape sequence: just add the character.
if (s[i] != '\x1b') {
output.put(s[i]);
++i;
continue;
}
// We have an escape sequence: locate it and its data
// It is either a single character, or it begins with '('
// and extends up to the following ')', with '\' as an escape character.
size_t escape_start = i;
++i;
size_t start_index = i;
size_t length;
if (i == s.length()) {
length = 0;
} else if (s[i] == L'(') {
++i;
++start_index;
while (i < s.length() && s[i] != L')') {
if (s[i] == L'\\') {
++i;
}
++i;
}
length = i - start_index;
++i;
if (i > s.length())
i = s.length();
} else {
++i;
length = 1;
}
std::wstring escape_sequence(s, start_index, length);
// The escape sequence is now reconstructed.
std::vector<std::wstring> parts = split(escape_sequence, L'@');
if (parts[0] == L"E") {
// "End of argument" escape sequence. Exit.
break;
} else if (parts[0] == L"T") {
// Beginning of translated string.
std::wstring textdomain;
if (parts.size() > 1)
textdomain = parts[1];
std::wstring translated;
translate_string(s, translations, textdomain, i, translated);
output << translated;
} else {
// Another escape sequence, such as colors. Preserve it.
output << std::wstring(s, escape_start, i - escape_start);
}
}
res = output.str();
}
// Translate string server side
std::wstring translate_string(const std::wstring &s, Translations *translations)
{
size_t i = 0;
std::wstring res;
translate_all(s, i, translations, res);
return res;
}
// Translate string client side
std::wstring translate_string(const std::wstring &s)
{
#ifdef SERVER
return translate_string(s, nullptr);
#else
return translate_string(s, g_client_translations);
#endif
}
static const std::array<std::wstring, 30> disallowed_dir_names = {
// Problematic filenames from here:
// https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file#file-and-directory-names
// Plus undocumented values from here:
// https://googleprojectzero.blogspot.com/2016/02/the-definitive-guide-on-win32-to-nt.html
L"CON",
L"PRN",
L"AUX",
L"NUL",
L"COM1",
L"COM2",
L"COM3",
L"COM4",
L"COM5",
L"COM6",
L"COM7",
L"COM8",
L"COM9",
L"COM\u00B2",
L"COM\u00B3",
L"COM\u00B9",
L"LPT1",
L"LPT2",
L"LPT3",
L"LPT4",
L"LPT5",
L"LPT6",
L"LPT7",
L"LPT8",
L"LPT9",
L"LPT\u00B2",
L"LPT\u00B3",
L"LPT\u00B9",
L"CONIN$",
L"CONOUT$",
};
/**
* List of characters that are blacklisted from created directories
*/
static const std::wstring disallowed_path_chars = L"<>:\"/\\|?*.";
std::string sanitizeDirName(const std::string &str, const std::string &optional_prefix)
{
std::wstring safe_name = utf8_to_wide(str);
for (std::wstring disallowed_name : disallowed_dir_names) {
if (str_equal(safe_name, disallowed_name, true)) {
safe_name = utf8_to_wide(optional_prefix) + safe_name;
break;
}
}
// Replace leading and trailing spaces with underscores.
size_t start = safe_name.find_first_not_of(L' ');
size_t end = safe_name.find_last_not_of(L' ');
if (start == std::wstring::npos || end == std::wstring::npos)
start = end = safe_name.size();
for (size_t i = 0; i < start; i++)
safe_name[i] = L'_';
for (size_t i = end + 1; i < safe_name.size(); i++)
safe_name[i] = L'_';
// Replace other disallowed characters with underscores
for (size_t i = 0; i < safe_name.length(); i++) {
bool is_valid = true;
// Unlikely, but control characters should always be blacklisted
if (safe_name[i] < 32) {
is_valid = false;
} else if (safe_name[i] < 128) {
is_valid = disallowed_path_chars.find_first_of(safe_name[i])
== std::wstring::npos;
}
if (!is_valid)
safe_name[i] = L'_';
}
return wide_to_utf8(safe_name);
}
void safe_print_string(std::ostream &os, const std::string &str)
{
std::ostream::fmtflags flags = os.flags();
os << std::hex;
for (const char c : str) {
if (IS_ASCII_PRINTABLE_CHAR(c) || IS_UTF8_MULTB_START(c) ||
IS_UTF8_MULTB_INNER(c) || c == '\n' || c == '\t') {
os << c;
} else {
os << '<' << std::setw(2) << (int)c << '>';
}
}
os.setf(flags);
}
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