Clean up CFX_TxtBreak

Removed some unused assignments and now unused variables.

Also rewrote a for loop so that its secondary condition is now in the
control block. The static analyzer was claiming it was possible for a
division by 0, though following the control path it was claiming, I am
pretty sure it should have exited early. This reorganizing of the code
makes it a bit more readable and eliminates the div by 0 warning from
the static analyzer.

Issues found with Clang Static Analyzer.

Change-Id: I91f1b42374734665b06724e9fafa6490e06bd3da
Reviewed-on: https://pdfium-review.googlesource.com/33910
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

1 files changed, 2 insertions, 9 deletions

diff --git a/xfa/fgas/layout/cfx_txtbreak.cpp b/xfa/fgas/layout/cfx_txtbreak.cpp
index 76a36c90da..7633c4c91e 100644
--- a/xfa/fgas/layout/cfx_txtbreak.cpp
+++ b/xfa/fgas/layout/cfx_txtbreak.cpp
@@ -456,7 +456,7 @@ void CFX_TxtBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
       else
         ttp.m_iStartPos = iStart;
 
-      for (int32_t j = 0; j < ttp.m_iChars; j++) {
+      for (int32_t j = 0; j < ttp.m_iChars && iGapChars > 0; j++, iGapChars--) {
         CFX_Char* pTC = ttp.GetChar(j);
         if (pTC->m_nBreakType != FX_LBT_DIRECT_BRK || pTC->m_iCharWidth < 0)
           continue;
@@ -465,9 +465,6 @@ void CFX_TxtBreak::EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
         pTC->m_iCharWidth += k;
         ttp.m_iWidth += k;
         iOffset -= k;
-        iGapChars--;
-        if (iGapChars < 1)
-          break;
       }
       iStart += ttp.m_iWidth;
     }
@@ -804,7 +801,6 @@ int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
     if (chartype < FX_CHARTYPE_ArabicAlef)
       bLam = false;
 
-    dwProps = FX_GetUnicodeProperties(wForm);
     bool bEmptyChar =
         (chartype >= FX_CHARTYPE_Tab && chartype <= FX_CHARTYPE_Control);
     if (wForm == 0xFEFF)
@@ -928,7 +924,6 @@ std::vector<CFX_RectF> CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
   int32_t iLength = pTxtRun->iLength;
   CFX_RectF rect(*pTxtRun->pRect);
   float fFontSize = pTxtRun->fFontSize;
-  int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
   float fScale = fFontSize / 1000.0f;
   RetainPtr<CFGAS_GEFont> pFont = pTxtRun->pFont;
   if (!pFont)
@@ -964,10 +959,8 @@ std::vector<CFX_RectF> CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
           wch == L'\n')) {
       bRet = false;
     }
-    if (bRet) {
-      iCharSize = iFontSize * 500;
+    if (bRet)
       fCharSize = fFontSize / 2.0f;
-    }
     rect.left = fStart;
     if (bRTLPiece) {
       rect.left -= fCharSize;