Move {Byte,Wide}String::Find() into StringTemplate<>

Change-Id: Ibd1697e8cb3109f759467f476604a266893948b9
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/116674
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Reviewed-by: Lei Zhang <thestig@chromium.org>

1 files changed, 0 insertions, 42 deletions

diff --git a/core/fxcrt/widestring.cpp b/core/fxcrt/widestring.cpp
index cdbf47d70..6f14a2607 100644
--- a/core/fxcrt/widestring.cpp
+++ b/core/fxcrt/widestring.cpp
@@ -647,48 +647,6 @@ WideString WideString::Last(size_t count) const {
   return Substr(GetLength() - count, count);
 }
 
-std::optional<size_t> WideString::Find(wchar_t ch, size_t start) const {
-  if (!m_pData)
-    return std::nullopt;
-
-  if (!IsValidIndex(start))
-    return std::nullopt;
-
-  const wchar_t* pStr = FXSYS_wmemchr(m_pData->m_String + start, ch,
-                                      m_pData->m_nDataLength - start);
-  return pStr ? std::optional<size_t>(
-                    static_cast<size_t>(pStr - m_pData->m_String))
-              : std::nullopt;
-}
-
-std::optional<size_t> WideString::Find(WideStringView subStr,
-                                       size_t start) const {
-  if (!m_pData) {
-    return std::nullopt;
-  }
-  if (!IsValidIndex(start)) {
-    return std::nullopt;
-  }
-  std::optional<size_t> result =
-      spanpos(m_pData->span().subspan(start), subStr.span());
-  if (!result.has_value()) {
-    return std::nullopt;
-  }
-  return start + result.value();
-}
-
-std::optional<size_t> WideString::ReverseFind(wchar_t ch) const {
-  if (!m_pData)
-    return std::nullopt;
-
-  size_t nLength = m_pData->m_nDataLength;
-  while (nLength--) {
-    if (m_pData->m_String[nLength] == ch)
-      return nLength;
-  }
-  return std::nullopt;
-}
-
 void WideString::MakeLower() {
   if (IsEmpty())
     return;