2 files changed, 9 insertions, 9 deletions
diff --git a/core/src/fpdftext/fpdf_text.cpp b/core/src/fpdftext/fpdf_text.cpp
index bef805189b..55ab483722 100644
--- a/core/src/fpdftext/fpdf_text.cpp
+++ b/core/src/fpdftext/fpdf_text.cpp
@@ -14,8 +14,6 @@
 #include "third_party/base/nonstd_unique_ptr.h"
 #include "txtproc.h"
 
-#include <cctype>
-
 CFX_ByteString CharFromUnicodeAlt(FX_WCHAR unicode,
                                   int destcp,
                                   const FX_CHAR* defchar) {
@@ -438,9 +436,10 @@ void NormalizeString(CFX_WideString& str) {
 static FX_BOOL IsNumber(CFX_WideString& str) {
   for (int i = 0; i < str.GetLength(); i++) {
     FX_WCHAR ch = str[i];
-    // TODO(dsinclair): --.+ +.-- should probably not be a number.
-    if (!std::iswdigit(ch) && ch != '-' && ch != '+' && ch != '.' && ch != ' ')
+    if ((ch < '0' || ch > '9') && ch != '-' && ch != '+' && ch != '.' &&
+        ch != ' ') {
       return FALSE;
+    }
   }
   return TRUE;
 }
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp
index 7a1000ef8c..dd6be313ba 100644
--- a/core/src/fpdftext/fpdf_text_int.cpp
+++ b/core/src/fpdftext/fpdf_text_int.cpp
@@ -4,7 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include <cctype>
+#include <ctype.h>
 #include <algorithm>
 
 #include "core/include/fpdfapi/fpdf_module.h"
@@ -2416,8 +2416,8 @@ void CPDF_TextPageFind::ExtractFindWhat(const CFX_WideString& findwhat) {
 FX_BOOL CPDF_TextPageFind::IsMatchWholeWord(const CFX_WideString& csPageText,
                                             int startPos,
                                             int endPos) {
-  FX_WCHAR char_left = 0;
-  FX_WCHAR char_right = 0;
+  int char_left = 0;
+  int char_right = 0;
   int char_count = endPos - startPos + 1;
   if (char_count < 1) {
     return FALSE;
@@ -2433,11 +2433,12 @@ FX_BOOL CPDF_TextPageFind::IsMatchWholeWord(const CFX_WideString& csPageText,
   }
   if ((char_left > 'A' && char_left < 'a') ||
       (char_left > 'a' && char_left < 'z') ||
-      (char_left > 0xfb00 && char_left < 0xfb06) || std::iswdigit(char_left) ||
+      (char_left > 0xfb00 && char_left < 0xfb06) ||
+      (char_left >= '0' && char_left <= '9') ||
       (char_right > 'A' && char_right < 'a') ||
       (char_right > 'a' && char_right < 'z') ||
       (char_right > 0xfb00 && char_right < 0xfb06) ||
-      std::iswdigit(char_right)) {
+      (char_right >= '0' && char_right <= '9')) {
     return FALSE;
   }
   if (!(('A' > char_left || char_left > 'Z') &&