misc/libphysfs/lzma/CPP/Common/ListFileUtils.cpp
author nemo
Mon, 10 Apr 2017 12:06:43 -0400
changeset 12218 bb5522e88ab2
permissions -rw-r--r--
bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash

// Common/ListFileUtils.cpp

#include "StdAfx.h"

#include "../Windows/FileIO.h"

#include "ListFileUtils.h"
#include "StringConvert.h"
#include "UTFConvert.h"

static const char kQuoteChar     = '\"';
static void RemoveQuote(UString &s)
{
  if (s.Length() >= 2)
    if (s[0] == kQuoteChar && s[s.Length() - 1] == kQuoteChar)
      s = s.Mid(1, s.Length() - 2);
}

bool ReadNamesFromListFile(LPCWSTR fileName, UStringVector &resultStrings, UINT codePage)
{
  NWindows::NFile::NIO::CInFile file;
  if (!file.Open(fileName))
    return false;
  UInt64 length;
  if (!file.GetLength(length))
    return false;
  if (length > ((UInt32)1 << 31))
    return false;
  AString s;
  char *p = s.GetBuffer((int)length + 1);
  UInt32 processed;
  if (!file.Read(p, (UInt32)length, processed))
    return false;
  p[(UInt32)length] = 0;
  s.ReleaseBuffer();
  file.Close();

  UString u;
  #ifdef CP_UTF8
  if (codePage == CP_UTF8)
  {
    if (!ConvertUTF8ToUnicode(s, u))
      return false;
  }
  else
  #endif
    u = MultiByteToUnicodeString(s, codePage);
  if (!u.IsEmpty())
  {
    if (u[0] == 0xFEFF)
      u.Delete(0);
  }

  UString t;
  for(int i = 0; i < u.Length(); i++)
  {
    wchar_t c = u[i];
    if (c == L'\n' || c == 0xD)
    {
      t.Trim();
      RemoveQuote(t);
      if (!t.IsEmpty())
        resultStrings.Add(t);
      t.Empty();
    }
    else
      t += c;
  }
  t.Trim();
  RemoveQuote(t);
  if (!t.IsEmpty())
    resultStrings.Add(t);
  return true;
}