Use FXSYS_IntToTwoHexChars() in more places.

Change-Id: I84cd8e91a296119ecf80b7a092b886f291bebb45
Reviewed-on: https://pdfium-review.googlesource.com/4953
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

2 files changed, 6 insertions, 4 deletions

diff --git a/core/fpdfapi/parser/fpdf_parser_decode.cpp b/core/fpdfapi/parser/fpdf_parser_decode.cpp
index c521c20665..64831e91e5 100644
--- a/core/fpdfapi/parser/fpdf_parser_decode.cpp
+++ b/core/fpdfapi/parser/fpdf_parser_decode.cpp
@@ -517,8 +517,10 @@ CFX_ByteString PDF_EncodeString(const CFX_ByteString& src, bool bHex) {
   if (bHex) {
     result.AppendChar('<');
     for (int i = 0; i < srclen; i++) {
-      result.AppendChar("0123456789ABCDEF"[src[i] / 16]);
-      result.AppendChar("0123456789ABCDEF"[src[i] % 16]);
+      char buf[2];
+      FXSYS_IntToTwoHexChars(src[i], buf);
+      result.AppendChar(buf[0]);
+      result.AppendChar(buf[1]);
     }
     result.AppendChar('>');
     return result.MakeString();
diff --git a/core/fpdfapi/parser/fpdf_parser_utility.cpp b/core/fpdfapi/parser/fpdf_parser_utility.cpp
index 1edf577c5b..af109e35aa 100644
--- a/core/fpdfapi/parser/fpdf_parser_utility.cpp
+++ b/core/fpdfapi/parser/fpdf_parser_utility.cpp
@@ -139,8 +139,8 @@ CFX_ByteString PDF_NameEncode(const CFX_ByteString& orig) {
     if (ch >= 0x80 || PDFCharIsWhitespace(ch) || ch == '#' ||
         PDFCharIsDelimiter(ch)) {
       dest_buf[dest_len++] = '#';
-      dest_buf[dest_len++] = "0123456789ABCDEF"[ch / 16];
-      dest_buf[dest_len++] = "0123456789ABCDEF"[ch % 16];
+      FXSYS_IntToTwoHexChars(ch, dest_buf + dest_len);
+      dest_len += 2;
     } else {
       dest_buf[dest_len++] = ch;
     }