Remove FX_STRSIZE casts, use safe conversions

BUG=pdfium:153
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1124043003

4 files changed, 30 insertions, 30 deletions

diff --git a/core/src/fxcrt/fx_basic_bstring.cpp b/core/src/fxcrt/fx_basic_bstring.cpp
index f18ae0825c..31621490d7 100644
--- a/core/src/fxcrt/fx_basic_bstring.cpp
+++ b/core/src/fxcrt/fx_basic_bstring.cpp
@@ -103,7 +103,7 @@ CFX_ByteString::~CFX_ByteString()
 CFX_ByteString::CFX_ByteString(FX_LPCSTR lpsz, FX_STRSIZE nLen)
 {
     if (nLen < 0) {
-        nLen = lpsz ? (FX_STRSIZE)FXSYS_strlen(lpsz) : 0;
+        nLen = lpsz ? FXSYS_strlen(lpsz) : 0;
     }
     if (nLen) {
         m_pData = FX_AllocString(nLen);
@@ -174,7 +174,7 @@ const CFX_ByteString& CFX_ByteString::operator=(FX_LPCSTR lpsz)
     if (lpsz == NULL || lpsz[0] == 0) {
         Empty();
     } else {
-        AssignCopy((FX_STRSIZE)FXSYS_strlen(lpsz), lpsz);
+        AssignCopy(FXSYS_strlen(lpsz), lpsz);
     }
     return *this;
 }
@@ -226,7 +226,7 @@ void CFX_ByteString::Load(FX_LPCBYTE buf, FX_STRSIZE len)
 const CFX_ByteString& CFX_ByteString::operator+=(FX_LPCSTR lpsz)
 {
     if (lpsz) {
-        ConcatInPlace((FX_STRSIZE)FXSYS_strlen(lpsz), lpsz);
+        ConcatInPlace(FXSYS_strlen(lpsz), lpsz);
     }
     return *this;
 }
@@ -360,7 +360,7 @@ void CFX_ByteString::ReleaseBuffer(FX_STRSIZE nNewLength)
     }
     CopyBeforeWrite();
     if (nNewLength == -1) {
-        nNewLength = (FX_STRSIZE)FXSYS_strlen((FX_LPCSTR)m_pData->m_String);
+        nNewLength = FXSYS_strlen((FX_LPCSTR)m_pData->m_String);
     }
     if (nNewLength == 0) {
         Empty();
@@ -523,7 +523,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
     int nMaxLen = 0;
     for (FX_LPCSTR lpsz = lpszFormat; *lpsz != 0; lpsz ++) {
         if (*lpsz != '%' || *(lpsz = lpsz + 1) == '%') {
-            nMaxLen += (FX_STRSIZE)FXSYS_strlen(lpsz);
+            nMaxLen += FXSYS_strlen(lpsz);
             continue;
         }
         int nItemLen = 0;
@@ -609,7 +609,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pstrNextArg);
+                        nItemLen = FXSYS_strlen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -621,7 +621,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_wcslen(pstrNextArg);
+                        nItemLen = FXSYS_wcslen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -634,7 +634,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pstrNextArg);
+                        nItemLen = FXSYS_strlen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -647,7 +647,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_wcslen(pstrNextArg);
+                        nItemLen = FXSYS_wcslen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -700,7 +700,7 @@ void CFX_ByteString::FormatV(FX_LPCSTR lpszFormat, va_list argList)
                         double f = va_arg(argList, double);
                         memset(pszTemp, 0, sizeof(pszTemp));
                         FXSYS_snprintf(pszTemp, sizeof(pszTemp) - 1, "%*.*f", nWidth, nPrecision + 6, f);
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pszTemp);
+                        nItemLen = FXSYS_strlen(pszTemp);
                     }
                     break;
                 case 'p':
@@ -969,7 +969,7 @@ CFX_WideString CFX_ByteString::UTF8Decode() const
 CFX_ByteString CFX_ByteString::FromUnicode(FX_LPCWSTR str, FX_STRSIZE len)
 {
     if (len < 0) {
-        len = (FX_STRSIZE)FXSYS_wcslen(str);
+        len = FXSYS_wcslen(str);
     }
     CFX_ByteString bstr;
     bstr.ConvertFrom(CFX_WideString(str, len));
@@ -1135,7 +1135,7 @@ FX_STRSIZE FX_ftoa(FX_FLOAT d, FX_LPSTR buf)
     }
     int i = scaled / scale;
     FXSYS_itoa(i, buf2, 10);
-    FX_STRSIZE len = (FX_STRSIZE)FXSYS_strlen(buf2);
+    FX_STRSIZE len = FXSYS_strlen(buf2);
     FXSYS_memcpy32(buf + buf_size, buf2, len);
     buf_size += len;
     int fraction = scaled % scale;
diff --git a/core/src/fxcrt/fx_basic_buffer.cpp b/core/src/fxcrt/fx_basic_buffer.cpp
index eb5246acec..7903740e47 100644
--- a/core/src/fxcrt/fx_basic_buffer.cpp
+++ b/core/src/fxcrt/fx_basic_buffer.cpp
@@ -150,14 +150,14 @@ CFX_ByteTextBuf& CFX_ByteTextBuf::operator << (int i)
 {
     char buf[32];
     FXSYS_itoa(i, buf, 10);
-    AppendBlock(buf, (FX_STRSIZE)FXSYS_strlen(buf));
+    AppendBlock(buf, FXSYS_strlen(buf));
     return *this;
 }
 CFX_ByteTextBuf& CFX_ByteTextBuf::operator << (FX_DWORD i)
 {
     char buf[32];
     FXSYS_itoa(i, buf, 10);
-    AppendBlock(buf, (FX_STRSIZE)FXSYS_strlen(buf));
+    AppendBlock(buf, FXSYS_strlen(buf));
     return *this;
 }
 CFX_ByteTextBuf& CFX_ByteTextBuf::operator << (double f)
@@ -199,7 +199,7 @@ CFX_WideTextBuf& CFX_WideTextBuf::operator << (int i)
 {
     char buf[32];
     FXSYS_itoa(i, buf, 10);
-    FX_STRSIZE len = (FX_STRSIZE)FXSYS_strlen(buf);
+    FX_STRSIZE len = FXSYS_strlen(buf);
     if (m_AllocSize < m_DataSize + (FX_STRSIZE)(len * sizeof(FX_WCHAR))) {
         ExpandBuf(len * sizeof(FX_WCHAR));
     }
@@ -228,7 +228,7 @@ CFX_WideTextBuf& CFX_WideTextBuf::operator << (double f)
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator << (FX_LPCWSTR lpsz)
 {
-    AppendBlock(lpsz, (FX_STRSIZE)FXSYS_wcslen(lpsz)*sizeof(FX_WCHAR));
+    AppendBlock(lpsz, FXSYS_wcslen(lpsz)*sizeof(FX_WCHAR));
     return *this;
 }
 CFX_WideTextBuf& CFX_WideTextBuf::operator << (const CFX_WideTextBuf& buf)
@@ -294,7 +294,7 @@ CFX_ArchiveSaver& CFX_ArchiveSaver::operator << (FX_BSTR bstr)
 }
 CFX_ArchiveSaver& CFX_ArchiveSaver::operator << (FX_LPCWSTR wstr)
 {
-    FX_STRSIZE len = (FX_STRSIZE)FXSYS_wcslen(wstr);
+    FX_STRSIZE len = FXSYS_wcslen(wstr);
     if (m_pStream) {
         m_pStream->WriteBlock(&len, sizeof(int));
         m_pStream->WriteBlock(wstr, len);
diff --git a/core/src/fxcrt/fx_basic_utf.cpp b/core/src/fxcrt/fx_basic_utf.cpp
index 02c7d98a1b..f52b83efda 100644
--- a/core/src/fxcrt/fx_basic_utf.cpp
+++ b/core/src/fxcrt/fx_basic_utf.cpp
@@ -80,7 +80,7 @@ CFX_ByteString FX_UTF8Encode(FX_LPCWSTR pwsStr, FX_STRSIZE len)
 {
     FXSYS_assert(pwsStr != NULL);
     if (len < 0) {
-        len = (FX_STRSIZE)FXSYS_wcslen(pwsStr);
+        len = FXSYS_wcslen(pwsStr);
     }
     CFX_UTF8Encoder encoder;
     while (len -- > 0) {
diff --git a/core/src/fxcrt/fx_basic_wstring.cpp b/core/src/fxcrt/fx_basic_wstring.cpp
index 3465b4a926..ce3166b196 100644
--- a/core/src/fxcrt/fx_basic_wstring.cpp
+++ b/core/src/fxcrt/fx_basic_wstring.cpp
@@ -79,7 +79,7 @@ CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc)
 }
 CFX_WideString::CFX_WideString(FX_LPCWSTR lpsz, FX_STRSIZE nLen) {
     if (nLen < 0) {
-        nLen = lpsz ? (FX_STRSIZE)FXSYS_wcslen(lpsz) : 0;
+        nLen = lpsz ? FXSYS_wcslen(lpsz) : 0;
     }
     if (nLen) {
         m_pData = FX_AllocStringW(nLen);
@@ -128,7 +128,7 @@ void CFX_WideString::ReleaseBuffer(FX_STRSIZE nNewLength)
     }
     CopyBeforeWrite();
     if (nNewLength == -1) {
-        nNewLength = m_pData ? (FX_STRSIZE)FXSYS_wcslen(m_pData->m_String) : 0;
+        nNewLength = m_pData ? FXSYS_wcslen(m_pData->m_String) : 0;
     }
     if (nNewLength == 0) {
         Empty();
@@ -143,7 +143,7 @@ const CFX_WideString& CFX_WideString::operator=(FX_LPCWSTR lpsz)
     if (lpsz == NULL || lpsz[0] == 0) {
         Empty();
     } else {
-        AssignCopy((FX_STRSIZE)FXSYS_wcslen(lpsz), lpsz);
+        AssignCopy(FXSYS_wcslen(lpsz), lpsz);
     }
     return *this;
 }
@@ -183,7 +183,7 @@ const CFX_WideString& CFX_WideString::operator+=(FX_WCHAR ch)
 const CFX_WideString& CFX_WideString::operator+=(FX_LPCWSTR lpsz)
 {
     if (lpsz) {
-        ConcatInPlace((FX_STRSIZE)FXSYS_wcslen(lpsz), lpsz);
+        ConcatInPlace(FXSYS_wcslen(lpsz), lpsz);
     }
     return *this;
 }
@@ -658,11 +658,11 @@ FX_STRSIZE CFX_WideString::Replace(FX_LPCWSTR lpszOld, FX_LPCWSTR lpszNew)
     if (lpszOld == NULL) {
         return 0;
     }
-    FX_STRSIZE nSourceLen = (FX_STRSIZE)FXSYS_wcslen(lpszOld);
+    FX_STRSIZE nSourceLen = FXSYS_wcslen(lpszOld);
     if (nSourceLen == 0) {
         return 0;
     }
-    FX_STRSIZE nReplacementLen = lpszNew ? (FX_STRSIZE)FXSYS_wcslen(lpszNew) : 0;
+    FX_STRSIZE nReplacementLen = lpszNew ? FXSYS_wcslen(lpszNew) : 0;
     FX_STRSIZE nCount = 0;
     FX_LPWSTR lpszStart = m_pData->m_String;
     FX_LPWSTR lpszEnd = m_pData->m_String + m_pData->m_nDataLength;
@@ -791,7 +791,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
     int nMaxLen = 0;
     for (FX_LPCWSTR lpsz = lpszFormat; *lpsz != 0; lpsz ++) {
         if (*lpsz != '%' || *(lpsz = lpsz + 1) == '%') {
-            nMaxLen += (FX_STRSIZE)FXSYS_wcslen(lpsz);
+            nMaxLen += FXSYS_wcslen(lpsz);
             continue;
         }
         int nItemLen = 0;
@@ -877,7 +877,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_wcslen(pstrNextArg);
+                        nItemLen = FXSYS_wcslen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -889,7 +889,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pstrNextArg);
+                        nItemLen = FXSYS_strlen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -902,7 +902,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pstrNextArg);
+                        nItemLen = FXSYS_strlen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -915,7 +915,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
                     if (pstrNextArg == NULL) {
                         nItemLen = 6;
                     } else {
-                        nItemLen = (FX_STRSIZE)FXSYS_wcslen(pstrNextArg);
+                        nItemLen = FXSYS_wcslen(pstrNextArg);
                         if (nItemLen < 1) {
                             nItemLen = 1;
                         }
@@ -968,7 +968,7 @@ void CFX_WideString::FormatV(FX_LPCWSTR lpszFormat, va_list argList)
                         char pszTemp[256];
                         f = va_arg(argList, double);
                         FXSYS_snprintf(pszTemp, sizeof(pszTemp), "%*.*f", nWidth, nPrecision + 6, f );
-                        nItemLen = (FX_STRSIZE)FXSYS_strlen(pszTemp);
+                        nItemLen = FXSYS_strlen(pszTemp);
                     }
                     break;
                 case 'p':