Revert "Revert "Revert "Cleanup some numeric code."""

This reverts commit e0e922db5fb77df9a5a9cc802096f484ed21da1c.

Broke Windows build.

FAILED: ninja -t msvc -e environment.x86 -- "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64_x86\cl.exe" /nologo /showIncludes /FC @obj\core\src\fxcrt\fxcrt.fx_basic_gcc.obj.rsp /c ..\..\core\src\fxcrt\fx_basic_gcc.cpp /Foobj\core\src\fxcrt\fxcrt.fx_basic_gcc.obj /Fdobj\fxcrt.cc.pdb
e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_gcc.cpp(28) : error C2220: warning treated as error - no 'object' file generated
        e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_gcc.cpp(75) : see reference to function template instantiation 'T FXSYS_StrToInt<int32_t,const FX_WCHAR*>(STR_T)' being compiled
        with
        [
            T=int32_t
,            STR_T=const FX_WCHAR *
        ]
e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_gcc.cpp(28) : warning C4244: 'argument' : conversion from 'const FX_WCHAR' to 'char', possible loss of data
FAILED: ninja -t msvc -e environment.x86 -- "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64_x86\cl.exe" /nologo /showIncludes /FC @obj\core\src\fpdftext\fpdftext.fpdf_text.obj.rsp /c ..\..\core\src\fpdftext\fpdf_text.cpp /Foobj\core\src\fpdftext\fpdftext.fpdf_text.obj /Fdobj\fpdftext.cc.pdb
e:\b\build\slave\windows\build\pdfium\core\src\fpdftext\fpdf_text.cpp(439) : error C2039: 'isdigit' : is not a member of 'std'
FAILED: ninja -t msvc -e environment.x86 -- "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64_x86\cl.exe" /nologo /showIncludes /FC @obj\core\src\fxcrt\fxcrt.fx_basic_wstring.obj.rsp /c ..\..\core\src\fxcrt\fx_basic_wstring.cpp /Foobj\core\src\fxcrt\fxcrt.fx_basic_wstring.obj /Fdobj\fxcrt.cc.pdb
e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_wstring.cpp(973) : error C2220: warning treated as error - no 'object' file generated
e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_wstring.cpp(973) : warning C4244: 'argument' : conversion from 'const FX_WCHAR' to 'char', possible loss of data
e:\b\build\slave\windows\build\pdfium\core\src\fxcrt\fx_basic_wstring.cpp(981) : warning C4244: 'argument' : conversion from 'const FX_WCHAR' to 'char', possible loss of data
FAILED: ninja -t msvc -e environment.x86 -- "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64_x86\cl.exe" /nologo /showIncludes /FC @obj\core\src\fpdftext\fpdftext.fpdf_text_int.obj.rsp /c ..\..\core\src\fpdftext\fpdf_text_int.cpp /Foobj\core\src\fpdftext\fpdftext.fpdf_text_int.obj /Fdobj\fpdftext.cc.pdb
e:\b\build\slave\windows\build\pdfium\core\src\fpdftext\fpdf_text_int.cpp(2436) : error C2039: 'isdigit' : is not a member of 'std'
e:\b\build\slave\windows\build\pdfium\core\src\fpdftext\fpdf_text_int.cpp(2440) : error C2039: 'isdigit' : is not a member of 'std'
ninja: build stopped: subcommand failed.

TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1431683008 .

2 files changed, 5 insertions, 7 deletions

diff --git a/fpdfsdk/src/javascript/PublicMethods.cpp b/fpdfsdk/src/javascript/PublicMethods.cpp
index 7ede42db13..e898214cd8 100644
--- a/fpdfsdk/src/javascript/PublicMethods.cpp
+++ b/fpdfsdk/src/javascript/PublicMethods.cpp
@@ -6,7 +6,6 @@
 
 #include "PublicMethods.h"
 
-#include "../../../core/include/fxcrt/fx_ext.h"
 #include "../../include/fsdk_mgr.h"  // For CPDFDoc_Environment.
 #include "../../include/javascript/IJavaScript.h"
 #include "Field.h"
@@ -117,7 +116,7 @@ FX_BOOL CJS_PublicMethods::IsDigit(wchar_t ch) {
 }
 
 FX_BOOL CJS_PublicMethods::IsDigit(char ch) {
-  return std::isdigit(ch);
+  return (ch >= '0' && ch <= '9');
 }
 
 FX_BOOL CJS_PublicMethods::IsAlphabetic(wchar_t ch) {
@@ -397,7 +396,7 @@ int CJS_PublicMethods::ParseStringInteger(const CFX_WideString& string,
 
     FX_WCHAR c = string.GetAt(i);
     if (IsDigit((wchar_t)c)) {
-      nRet = nRet * 10 + FXSYS_toDecimalDigit(c);
+      nRet = nRet * 10 + (c - '0');
       nSkip = i - nStart + 1;
       if (nSkip >= nMaxStep)
         break;
diff --git a/fpdfsdk/src/javascript/util.cpp b/fpdfsdk/src/javascript/util.cpp
index fc94a0e393..14e15c1b6f 100644
--- a/fpdfsdk/src/javascript/util.cpp
+++ b/fpdfsdk/src/javascript/util.cpp
@@ -6,7 +6,6 @@
 
 #include "util.h"
 
-#include "../../../core/include/fxcrt/fx_ext.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "JS_Context.h"
 #include "JS_Define.h"
@@ -426,7 +425,7 @@ void util::printx(const std::string& cFormat,
         break;
       case 'X': {
         while (itSource < iSize) {
-          if (std::isdigit(cSource[itSource]) ||
+          if ((cSource[itSource] >= '0' && cSource[itSource] <= '9') ||
               (cSource[itSource] >= 'a' && cSource[itSource] <= 'z') ||
               (cSource[itSource] >= 'A' && cSource[itSource] <= 'Z')) {
             cPurpose += cSource[itSource];
@@ -451,7 +450,7 @@ void util::printx(const std::string& cFormat,
       } break;
       case '9': {
         while (itSource < iSize) {
-          if (std::isdigit(cSource[itSource])) {
+          if (cSource[itSource] >= '0' && cSource[itSource] <= '9') {
             cPurpose += cSource[itSource];
             itSource++;
             break;
@@ -532,7 +531,7 @@ int64_t FX_atoi64(const char* nptr) {
   total = 0;
 
   while (isdigit(c)) {
-    total = 10 * total + FXSYS_toDecimalDigit(c); /* accumulate digit */
+    total = 10 * total + (c - '0');  /* accumulate digit */
     c = (int)(unsigned char)*nptr++; /* get next char */
   }