/*
-Minetest-c55
-Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
+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
*/
#include "string.h"
+#include "pointer.h"
+#include "numeric.h"
+#include "log.h"
-#include "../sha1.h"
-#include "../base64.h"
+#include "hex.h"
+#include "../porting.h"
-// Get an sha-1 hash of the player's name combined with
-// the password entered. That's what the server uses as
-// their password. (Exception : if the password field is
-// blank, we send a blank password - this is for backwards
-// compatibility with password-less players).
-std::string translatePassword(std::string playername, std::wstring password)
+#include <algorithm>
+#include <sstream>
+#include <iomanip>
+#include <map>
+
+#ifndef _WIN32
+ #include <iconv.h>
+#else
+ #define _WIN32_WINNT 0x0501
+ #include <windows.h>
+#endif
+
+#if defined(_ICONV_H_) && (defined(__FreeBSD__) || defined(__NetBSD__) || \
+ defined(__OpenBSD__) || defined(__DragonFly__))
+ #define BSD_ICONV_USED
+#endif
+
+static bool parseHexColorString(const std::string &value, video::SColor &color);
+static bool parseNamedColorString(const std::string &value, video::SColor &color);
+
+#ifndef _WIN32
+
+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);
+
+#ifdef BSD_ICONV_USED
+ const char *inbuf_ptr = inbuf;
+#else
+ char *inbuf_ptr = inbuf;
+#endif
+
+ char *outbuf_ptr = outbuf;
+
+ size_t *inbuf_left_ptr = &inbuf_size;
+ size_t *outbuf_left_ptr = &outbuf_size;
+
+ size_t old_size = inbuf_size;
+ while (inbuf_size > 0) {
+ iconv(cd, &inbuf_ptr, inbuf_left_ptr, &outbuf_ptr, outbuf_left_ptr);
+ if (inbuf_size == old_size) {
+ iconv_close(cd);
+ return false;
+ }
+ old_size = inbuf_size;
+ }
+
+ iconv_close(cd);
+ return true;
+}
+
+std::wstring utf8_to_wide(const std::string &input)
+{
+ size_t inbuf_size = input.length() + 1;
+ // maximum possible size, every character is sizeof(wchar_t) bytes
+ size_t outbuf_size = (input.length() + 1) * sizeof(wchar_t);
+
+ char *inbuf = new char[inbuf_size];
+ memcpy(inbuf, input.c_str(), inbuf_size);
+ char *outbuf = new char[outbuf_size];
+ memset(outbuf, 0, outbuf_size);
+
+ if (!convert("WCHAR_T", "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;
+ delete[] outbuf;
+ return L"<invalid UTF-8 string>";
+ }
+ std::wstring out((wchar_t *)outbuf);
+
+ delete[] inbuf;
+ delete[] outbuf;
+
+ return out;
+}
+
+#ifdef __ANDROID__
+// TODO: this is an ugly fix for wide_to_utf8 somehow not working on android
+std::string wide_to_utf8(const std::wstring &input)
+{
+ return wide_to_narrow(input);
+}
+#else
+std::string wide_to_utf8(const std::wstring &input)
+{
+ size_t inbuf_size = (input.length() + 1) * sizeof(wchar_t);
+ // maximum possible size: utf-8 encodes codepoints using 1 up to 6 bytes
+ size_t outbuf_size = (input.length() + 1) * 6;
+
+ char *inbuf = new char[inbuf_size];
+ memcpy(inbuf, input.c_str(), inbuf_size);
+ char *outbuf = new char[outbuf_size];
+ memset(outbuf, 0, outbuf_size);
+
+ if (!convert("UTF-8", "WCHAR_T", outbuf, outbuf_size, inbuf, inbuf_size)) {
+ infostream << "Couldn't convert wstring 0x" << hex_encode(inbuf, inbuf_size)
+ << " into UTF-8 string" << std::endl;
+ delete[] inbuf;
+ delete[] outbuf;
+ return "<invalid wstring>";
+ }
+ std::string out(outbuf);
+
+ delete[] inbuf;
+ delete[] outbuf;
+
+ return out;
+}
+
+#endif
+#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
+
+wchar_t *utf8_to_wide_c(const char *str)
+{
+ std::wstring ret = utf8_to_wide(std::string(str)).c_str();
+ size_t len = ret.length();
+ wchar_t *ret_c = new wchar_t[len + 1];
+ memset(ret_c, 0, (len + 1) * sizeof(wchar_t));
+ memcpy(ret_c, ret.c_str(), len * sizeof(wchar_t));
+ return ret_c;
+}
+
+// You must free the returned string!
+// The returned string is allocated using new
+wchar_t *narrow_to_wide_c(const char *str)
{
- if(password.length() == 0)
- return "";
+ wchar_t *nstr = NULL;
+#if defined(_WIN32)
+ int nResult = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) str, -1, 0, 0);
+ if (nResult == 0) {
+ errorstream<<"gettext: MultiByteToWideChar returned null"<<std::endl;
+ } else {
+ nstr = new wchar_t[nResult];
+ MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) str, -1, (WCHAR *) nstr, nResult);
+ }
+#else
+ size_t len = strlen(str);
+ nstr = new wchar_t[len + 1];
+
+ std::wstring intermediate = narrow_to_wide(str);
+ memset(nstr, 0, (len + 1) * sizeof(wchar_t));
+ memcpy(nstr, intermediate.c_str(), len * sizeof(wchar_t));
+#endif
+
+ return nstr;
+}
+
+
+#ifdef __ANDROID__
+
+const wchar_t* wide_chars =
+ L" !\"#$%&'()*+,-./0123456789:;<=>?@"
+ L"ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
+ L"abcdefghijklmnopqrstuvwxyz{|}~";
+
+int wctomb(char *s, wchar_t wc)
+{
+ for (unsigned int j = 0; j < (sizeof(wide_chars)/sizeof(wchar_t));j++) {
+ if (wc == wide_chars[j]) {
+ *s = (char) (j+32);
+ return 1;
+ }
+ else if (wc == L'\n') {
+ *s = '\n';
+ return 1;
+ }
+ }
+ return -1;
+}
+
+int mbtowc(wchar_t *pwc, const char *s, size_t n)
+{
+ std::wstring intermediate = narrow_to_wide(s);
+
+ if (intermediate.length() > 0) {
+ *pwc = intermediate[0];
+ return 1;
+ }
+ else {
+ return -1;
+ }
+}
+
+std::wstring narrow_to_wide(const std::string &mbs) {
+ size_t wcl = mbs.size();
+
+ std::wstring retval = L"";
+
+ for (unsigned int i = 0; i < wcl; i++) {
+ if (((unsigned char) mbs[i] >31) &&
+ ((unsigned char) mbs[i] < 127)) {
- std::string slt = playername + wide_to_narrow(password);
- SHA1 sha1;
- sha1.addBytes(slt.c_str(), slt.length());
- unsigned char *digest = sha1.getDigest();
- std::string pwd = base64_encode(digest, 20);
- free(digest);
- return pwd;
+ retval += wide_chars[(unsigned char) mbs[i] -32];
+ }
+ //handle newline
+ else if (mbs[i] == '\n') {
+ retval += L'\n';
+ }
+ }
+
+ return retval;
+}
+
+#else // not Android
+
+std::wstring narrow_to_wide(const std::string &mbs)
+{
+ size_t wcl = mbs.size();
+ Buffer<wchar_t> wcs(wcl + 1);
+ size_t len = mbstowcs(*wcs, mbs.c_str(), wcl);
+ if (len == (size_t)(-1))
+ return L"<invalid multibyte string>";
+ wcs[len] = 0;
+ return *wcs;
+}
+
+#endif
+
+#ifdef __ANDROID__
+
+std::string wide_to_narrow(const std::wstring &wcs) {
+ size_t mbl = wcs.size()*4;
+
+ std::string retval = "";
+ for (unsigned int i = 0; i < wcs.size(); i++) {
+ wchar_t char1 = (wchar_t) wcs[i];
+
+ if (char1 == L'\n') {
+ retval += '\n';
+ continue;
+ }
+
+ for (unsigned int j = 0; j < wcslen(wide_chars);j++) {
+ wchar_t char2 = (wchar_t) wide_chars[j];
+
+ if (char1 == char2) {
+ char toadd = (j+32);
+ retval += toadd;
+ break;
+ }
+ }
+ }
+
+ return retval;
}
-size_t curl_write_data(char *ptr, size_t size, size_t nmemb, void *userdata) {
- std::ostringstream *stream = (std::ostringstream*)userdata;
- size_t count = size * nmemb;
- stream->write(ptr, count);
- return count;
+#else // not Android
+
+std::string wide_to_narrow(const std::wstring &wcs)
+{
+ size_t mbl = wcs.size() * 4;
+ SharedBuffer<char> mbs(mbl+1);
+ size_t len = wcstombs(*mbs, wcs.c_str(), mbl);
+ if (len == (size_t)(-1))
+ return "Character conversion failed!";
+ else
+ mbs[len] = 0;
+ return *mbs;
}
-char *mystrtok_r(char *s, const char *sep, char **lasts) {
+#endif
+
+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 (u32 i = 0; i < str.size(); i++) {
+ unsigned char c = str[i];
+ 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 = NULL;
+
+ while ((flagstr = strtok_r(s, ",", &strpos))) {
+ s = NULL;
+
+ 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;
- int delim_reached;
if (!s)
s = *lasts;
if (!*s)
return NULL;
- delim_reached = 0;
t = s;
while (*t) {
if (strchr(sep, *t)) {
- *t = '\0';
- delim_reached = 1;
- } else if (delim_reached) {
- *lasts = t;
- return s;
+ *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;
+}
+
+bool parseColorString(const std::string &value, video::SColor &color, bool quiet)
+{
+ bool success;
+
+ if (value[0] == '#')
+ success = parseHexColorString(value, color);
+ else
+ success = parseNamedColorString(value, color);
+
+ if (!success && !quiet)
+ errorstream << "Invalid color: \"" << value << "\"" << std::endl;
+
+ return success;
+}
+
+static bool parseHexColorString(const std::string &value, video::SColor &color)
+{
+ unsigned char components[] = { 0x00, 0x00, 0x00, 0xff }; // R,G,B,A
+
+ if (value[0] != '#')
+ return false;
+
+ 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;
+
+ bool success = true;
+
+ for (size_t pos = 1, cc = 0; pos < len; pos++, cc++) {
+ assert(cc < sizeof components / sizeof components[0]);
+ if (short_form) {
+ unsigned char d;
+ if (!hex_digit_decode(value[pos], d)) {
+ success = false;
+ break;
+ }
+ components[cc] = (d & 0xf) << 4 | (d & 0xf);
+ } else {
+ unsigned char d1, d2;
+ if (!hex_digit_decode(value[pos], d1) ||
+ !hex_digit_decode(value[pos+1], d2)) {
+ success = false;
+ break;
+ }
+ components[cc] = (d1 & 0xf) << 4 | (d2 & 0xf);
+ pos++; // skip the second digit -- it's already used
+ }
+ }
+
+ if (success) {
+ color.setRed(components[0]);
+ color.setGreen(components[1]);
+ color.setBlue(components[2]);
+ color.setAlpha(components[3]);
+ }
+
+ return success;
+}
+
+struct ColorContainer {
+ ColorContainer();
+ std::map<const std::string, u32> colors;
+};
+
+ColorContainer::ColorContainer()
+{
+ colors["aliceblue"] = 0xf0f8ff;
+ colors["antiquewhite"] = 0xfaebd7;
+ colors["aqua"] = 0x00ffff;
+ colors["aquamarine"] = 0x7fffd4;
+ colors["azure"] = 0xf0ffff;
+ colors["beige"] = 0xf5f5dc;
+ colors["bisque"] = 0xffe4c4;
+ colors["black"] = 00000000;
+ colors["blanchedalmond"] = 0xffebcd;
+ colors["blue"] = 0x0000ff;
+ colors["blueviolet"] = 0x8a2be2;
+ colors["brown"] = 0xa52a2a;
+ colors["burlywood"] = 0xdeb887;
+ colors["cadetblue"] = 0x5f9ea0;
+ colors["chartreuse"] = 0x7fff00;
+ colors["chocolate"] = 0xd2691e;
+ colors["coral"] = 0xff7f50;
+ colors["cornflowerblue"] = 0x6495ed;
+ colors["cornsilk"] = 0xfff8dc;
+ colors["crimson"] = 0xdc143c;
+ colors["cyan"] = 0x00ffff;
+ colors["darkblue"] = 0x00008b;
+ colors["darkcyan"] = 0x008b8b;
+ colors["darkgoldenrod"] = 0xb8860b;
+ colors["darkgray"] = 0xa9a9a9;
+ colors["darkgreen"] = 0x006400;
+ colors["darkgrey"] = 0xa9a9a9;
+ colors["darkkhaki"] = 0xbdb76b;
+ colors["darkmagenta"] = 0x8b008b;
+ colors["darkolivegreen"] = 0x556b2f;
+ colors["darkorange"] = 0xff8c00;
+ colors["darkorchid"] = 0x9932cc;
+ colors["darkred"] = 0x8b0000;
+ colors["darksalmon"] = 0xe9967a;
+ colors["darkseagreen"] = 0x8fbc8f;
+ colors["darkslateblue"] = 0x483d8b;
+ colors["darkslategray"] = 0x2f4f4f;
+ colors["darkslategrey"] = 0x2f4f4f;
+ colors["darkturquoise"] = 0x00ced1;
+ colors["darkviolet"] = 0x9400d3;
+ colors["deeppink"] = 0xff1493;
+ colors["deepskyblue"] = 0x00bfff;
+ colors["dimgray"] = 0x696969;
+ colors["dimgrey"] = 0x696969;
+ colors["dodgerblue"] = 0x1e90ff;
+ colors["firebrick"] = 0xb22222;
+ colors["floralwhite"] = 0xfffaf0;
+ colors["forestgreen"] = 0x228b22;
+ colors["fuchsia"] = 0xff00ff;
+ colors["gainsboro"] = 0xdcdcdc;
+ colors["ghostwhite"] = 0xf8f8ff;
+ colors["gold"] = 0xffd700;
+ colors["goldenrod"] = 0xdaa520;
+ colors["gray"] = 0x808080;
+ colors["green"] = 0x008000;
+ colors["greenyellow"] = 0xadff2f;
+ colors["grey"] = 0x808080;
+ colors["honeydew"] = 0xf0fff0;
+ colors["hotpink"] = 0xff69b4;
+ colors["indianred"] = 0xcd5c5c;
+ colors["indigo"] = 0x4b0082;
+ colors["ivory"] = 0xfffff0;
+ colors["khaki"] = 0xf0e68c;
+ colors["lavender"] = 0xe6e6fa;
+ colors["lavenderblush"] = 0xfff0f5;
+ colors["lawngreen"] = 0x7cfc00;
+ colors["lemonchiffon"] = 0xfffacd;
+ colors["lightblue"] = 0xadd8e6;
+ colors["lightcoral"] = 0xf08080;
+ colors["lightcyan"] = 0xe0ffff;
+ colors["lightgoldenrodyellow"] = 0xfafad2;
+ colors["lightgray"] = 0xd3d3d3;
+ colors["lightgreen"] = 0x90ee90;
+ colors["lightgrey"] = 0xd3d3d3;
+ colors["lightpink"] = 0xffb6c1;
+ colors["lightsalmon"] = 0xffa07a;
+ colors["lightseagreen"] = 0x20b2aa;
+ colors["lightskyblue"] = 0x87cefa;
+ colors["lightslategray"] = 0x778899;
+ colors["lightslategrey"] = 0x778899;
+ colors["lightsteelblue"] = 0xb0c4de;
+ colors["lightyellow"] = 0xffffe0;
+ colors["lime"] = 0x00ff00;
+ colors["limegreen"] = 0x32cd32;
+ colors["linen"] = 0xfaf0e6;
+ colors["magenta"] = 0xff00ff;
+ colors["maroon"] = 0x800000;
+ colors["mediumaquamarine"] = 0x66cdaa;
+ colors["mediumblue"] = 0x0000cd;
+ colors["mediumorchid"] = 0xba55d3;
+ colors["mediumpurple"] = 0x9370db;
+ colors["mediumseagreen"] = 0x3cb371;
+ colors["mediumslateblue"] = 0x7b68ee;
+ colors["mediumspringgreen"] = 0x00fa9a;
+ colors["mediumturquoise"] = 0x48d1cc;
+ colors["mediumvioletred"] = 0xc71585;
+ colors["midnightblue"] = 0x191970;
+ colors["mintcream"] = 0xf5fffa;
+ colors["mistyrose"] = 0xffe4e1;
+ colors["moccasin"] = 0xffe4b5;
+ colors["navajowhite"] = 0xffdead;
+ colors["navy"] = 0x000080;
+ colors["oldlace"] = 0xfdf5e6;
+ colors["olive"] = 0x808000;
+ colors["olivedrab"] = 0x6b8e23;
+ colors["orange"] = 0xffa500;
+ colors["orangered"] = 0xff4500;
+ colors["orchid"] = 0xda70d6;
+ colors["palegoldenrod"] = 0xeee8aa;
+ colors["palegreen"] = 0x98fb98;
+ colors["paleturquoise"] = 0xafeeee;
+ colors["palevioletred"] = 0xdb7093;
+ colors["papayawhip"] = 0xffefd5;
+ colors["peachpuff"] = 0xffdab9;
+ colors["peru"] = 0xcd853f;
+ colors["pink"] = 0xffc0cb;
+ colors["plum"] = 0xdda0dd;
+ colors["powderblue"] = 0xb0e0e6;
+ colors["purple"] = 0x800080;
+ colors["red"] = 0xff0000;
+ colors["rosybrown"] = 0xbc8f8f;
+ colors["royalblue"] = 0x4169e1;
+ colors["saddlebrown"] = 0x8b4513;
+ colors["salmon"] = 0xfa8072;
+ colors["sandybrown"] = 0xf4a460;
+ colors["seagreen"] = 0x2e8b57;
+ colors["seashell"] = 0xfff5ee;
+ colors["sienna"] = 0xa0522d;
+ colors["silver"] = 0xc0c0c0;
+ colors["skyblue"] = 0x87ceeb;
+ colors["slateblue"] = 0x6a5acd;
+ colors["slategray"] = 0x708090;
+ colors["slategrey"] = 0x708090;
+ colors["snow"] = 0xfffafa;
+ colors["springgreen"] = 0x00ff7f;
+ colors["steelblue"] = 0x4682b4;
+ colors["tan"] = 0xd2b48c;
+ colors["teal"] = 0x008080;
+ colors["thistle"] = 0xd8bfd8;
+ colors["tomato"] = 0xff6347;
+ colors["turquoise"] = 0x40e0d0;
+ colors["violet"] = 0xee82ee;
+ colors["wheat"] = 0xf5deb3;
+ colors["white"] = 0xffffff;
+ colors["whitesmoke"] = 0xf5f5f5;
+ colors["yellow"] = 0xffff00;
+ colors["yellowgreen"] = 0x9acd32;
+
+}
+
+static const ColorContainer named_colors;
+
+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(value);
+
+ std::map<const std::string, unsigned>::const_iterator it;
+ it = named_colors.colors.find(color_name);
+ if (it == named_colors.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
+ *
+ * For named colors the supplied alpha string (representing a hex value)
+ * must be exactly two digits. For example: colorname#08
+ */
+ if (!alpha_string.empty()) {
+ if (alpha_string.length() != 2)
+ return false;
+
+ unsigned char d1, d2;
+ if (!hex_digit_decode(alpha_string.at(0), d1)
+ || !hex_digit_decode(alpha_string.at(1), d2))
+ return false;
+ color_temp |= ((d1 & 0xf) << 4 | (d2 & 0xf)) << 24;
+ } else {
+ color_temp |= 0xff << 24; // Fully opaque
+ }
+
+ color = video::SColor(color_temp);
+
+ return true;
+}
+
+void str_replace(std::string &str, char from, char to)
+{
+ std::replace(str.begin(), str.end(), from, to);
+}
projects / oweals / minetest.git / blobdiff