From f19f813537c7aea1c20749c914e756b54a9c3cf5 Mon Sep 17 00:00:00 2001 From: Igor Pavlov <87184205+ip7z@users.noreply.github.com> Date: Mon, 27 Dec 2021 00:00:00 +0000 Subject: '21.07' --- CPP/Common/Lang.cpp | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 CPP/Common/Lang.cpp (limited to 'CPP/Common/Lang.cpp') diff --git a/CPP/Common/Lang.cpp b/CPP/Common/Lang.cpp new file mode 100644 index 0000000..35d3752 --- /dev/null +++ b/CPP/Common/Lang.cpp @@ -0,0 +1,163 @@ +// Common/Lang.cpp + +#include "StdAfx.h" + +#include "Lang.h" +#include "StringToInt.h" +#include "UTFConvert.h" + +#include "../Windows/FileIO.h" + +void CLang::Clear() throw() +{ + _ids.Clear(); + _offsets.Clear(); + delete []_text; + _text = 0; +} + +static const char * const kLangSignature = ";!@Lang2@!UTF-8!"; + +bool CLang::OpenFromString(const AString &s2) +{ + UString s; + if (!ConvertUTF8ToUnicode(s2, s)) + return false; + unsigned i = 0; + if (s.IsEmpty()) + return false; + if (s[0] == 0xFEFF) + i++; + + for (const char *p = kLangSignature;; i++) + { + Byte c = (Byte)(*p++); + if (c == 0) + break; + if (s[i] != c) + return false; + } + + _text = new wchar_t[s.Len() - i + 1]; + wchar_t *text = _text; + + Int32 id = -100; + UInt32 pos = 0; + + while (i < s.Len()) + { + unsigned start = pos; + do + { + wchar_t c = s[i++]; + if (c == '\n') + break; + if (c == '\\') + { + if (i == s.Len()) + return false; + c = s[i++]; + switch (c) + { + case '\n': return false; + case 'n': c = '\n'; break; + case 't': c = '\t'; break; + case '\\': c = '\\'; break; + default: text[pos++] = L'\\'; break; + } + } + text[pos++] = c; + } + while (i < s.Len()); + + { + unsigned j = start; + for (; j < pos; j++) + if (text[j] != ' ') + break; + if (j == pos) + { + id++; + continue; + } + } + if (text[start] == ';') + { + pos = start; + id++; + continue; + } + + text[pos++] = 0; + const wchar_t *end; + UInt32 id32 = ConvertStringToUInt32(text + start, &end); + if (*end == 0) + { + if (id32 > ((UInt32)1 << 30) || (Int32)id32 < id) + return false; + id = (Int32)id32; + pos = start; + continue; + } + + if (id < 0) + return false; + _ids.Add((UInt32)id++); + _offsets.Add(start); + } + + return true; +} + +bool CLang::Open(CFSTR fileName, const char *id) +{ + Clear(); + NWindows::NFile::NIO::CInFile file; + if (!file.Open(fileName)) + return false; + UInt64 length; + if (!file.GetLength(length)) + return false; + if (length > (1 << 20)) + return false; + + AString s; + const unsigned len = (unsigned)length; + char *p = s.GetBuf(len); + size_t processed; + if (!file.ReadFull(p, len, processed)) + return false; + file.Close(); + if (len != processed) + return false; + + char *p2 = p; + for (unsigned i = 0; i < len; i++) + { + char c = p[i]; + if (c == 0) + break; + if (c != 0x0D) + *p2++ = c; + } + *p2 = 0; + s.ReleaseBuf_SetLen((unsigned)(p2 - p)); + + if (OpenFromString(s)) + { + const wchar_t *name = Get(0); + if (name && StringsAreEqual_Ascii(name, id)) + return true; + } + + Clear(); + return false; +} + +const wchar_t *CLang::Get(UInt32 id) const throw() +{ + int index = _ids.FindInSorted(id); + if (index < 0) + return NULL; + return _text + (size_t)_offsets[(unsigned)index]; +} -- cgit v1.2.3-55-g6feb