src/util/enriched_string.cpp

   1 /*
   2 Copyright (C) 2013 xyz, Ilya Zhuravlev <whatever@xyz.is>
   3 Copyright (C) 2016 Nore, Nathanaël Courant <nore@mesecons.net>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "enriched_string.h"
  21 #include "util/string.h"
  22 #include "log.h"
  23 using namespace irr::video;
  24
  25 EnrichedString::EnrichedString()
  26 {
  27         clear();
  28 }
  29
  30 EnrichedString::EnrichedString(const std::wstring &string,
  31                 const std::vector<SColor> &colors):
  32         m_string(string),
  33         m_colors(colors),
  34         m_has_background(false)
  35 {}
  36
  37 EnrichedString::EnrichedString(const std::wstring &s, const SColor &color)
  38 {
  39         clear();
  40         addAtEnd(s, color);
  41 }
  42
  43 EnrichedString::EnrichedString(const wchar_t *str, const SColor &color)
  44 {
  45         clear();
  46         addAtEnd(std::wstring(str), color);
  47 }
  48
  49 void EnrichedString::operator=(const wchar_t *str)
  50 {
  51         clear();
  52         addAtEnd(std::wstring(str), SColor(255, 255, 255, 255));
  53 }
  54
  55 void EnrichedString::addAtEnd(const std::wstring &s, const SColor &initial_color)
  56 {
  57         SColor color(initial_color);
  58         size_t i = 0;
  59         while (i < s.length()) {
  60                 if (s[i] != L'\x1b') {
  61                         m_string += s[i];
  62                         m_colors.push_back(color);
  63                         ++i;
  64                         continue;
  65                 }
  66                 ++i;
  67                 size_t start_index = i;
  68                 size_t length;
  69                 if (i == s.length()) {
  70                         break;
  71                 }
  72                 if (s[i] == L'(') {
  73                         ++i;
  74                         ++start_index;
  75                         while (i < s.length() && s[i] != L')') {
  76                                 if (s[i] == L'\\') {
  77                                         ++i;
  78                                 }
  79                                 ++i;
  80                         }
  81                         length = i - start_index;
  82                         ++i;
  83                 } else {
  84                         ++i;
  85                         length = 1;
  86                 }
  87                 std::wstring escape_sequence(s, start_index, length);
  88                 std::vector<std::wstring> parts = split(escape_sequence, L'@');
  89                 if (parts[0] == L"c") {
  90                         if (parts.size() < 2) {
  91                                 continue;
  92                         }
  93                         parseColorString(wide_to_utf8(parts[1]), color, true);
  94                 } else if (parts[0] == L"b") {
  95                         if (parts.size() < 2) {
  96                                 continue;
  97                         }
  98                         parseColorString(wide_to_utf8(parts[1]), m_background, true);
  99                         m_has_background = true;
 100                 }
 101                 continue;
 102         }
 103 }
 104
 105 void EnrichedString::addChar(const EnrichedString &source, size_t i)
 106 {
 107         m_string += source.m_string[i];
 108         m_colors.push_back(source.m_colors[i]);
 109 }
 110
 111 void EnrichedString::addCharNoColor(wchar_t c)
 112 {
 113         m_string += c;
 114         if (m_colors.empty()) {
 115                 m_colors.push_back(SColor(255, 255, 255, 255));
 116         } else {
 117                 m_colors.push_back(m_colors[m_colors.size() - 1]);
 118         }
 119 }
 120
 121 EnrichedString EnrichedString::operator+(const EnrichedString &other) const
 122 {
 123         std::vector<SColor> result;
 124         result.insert(result.end(), m_colors.begin(), m_colors.end());
 125         result.insert(result.end(), other.m_colors.begin(), other.m_colors.end());
 126         return EnrichedString(m_string + other.m_string, result);
 127 }
 128
 129 void EnrichedString::operator+=(const EnrichedString &other)
 130 {
 131         m_string += other.m_string;
 132         m_colors.insert(m_colors.end(), other.m_colors.begin(), other.m_colors.end());
 133 }
 134
 135 EnrichedString EnrichedString::substr(size_t pos, size_t len) const
 136 {
 137         if (pos == m_string.length()) {
 138                 return EnrichedString();
 139         }
 140         if (len == std::string::npos || pos + len > m_string.length()) {
 141                 return EnrichedString(
 142                            m_string.substr(pos, std::string::npos),
 143                            std::vector<SColor>(m_colors.begin() + pos, m_colors.end())
 144                        );
 145         } else {
 146                 return EnrichedString(
 147                            m_string.substr(pos, len),
 148                            std::vector<SColor>(m_colors.begin() + pos, m_colors.begin() + pos + len)
 149                        );
 150         }
 151 }
 152
 153 const wchar_t *EnrichedString::c_str() const
 154 {
 155         return m_string.c_str();
 156 }
 157
 158 const std::vector<SColor> &EnrichedString::getColors() const
 159 {
 160         return m_colors;
 161 }
 162
 163 const std::wstring &EnrichedString::getString() const
 164 {
 165         return m_string;
 166 }