pdfviewer: fix warnings on mac

experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp

 #include "SkNativeParsedPDF.h"
 #include "SkPdfNativeTokenizer.h"
 #include "SkPdfBasics.h"
 #include "SkPdfParser.h"
 #include "SkPdfObject.h"
 
 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
 #include "SkPdfFileTrailerDictionary_autogen.h"
 #include "SkPdfCatalogDictionary_autogen.h"
 #include "SkPdfPageObjectDictionary_autogen.h"
 #include "SkPdfPageTreeNodeDictionary_autogen.h"
 #include "SkPdfMapper_autogen.h"
 
 
 
-long getFileSize(const char* filename)
+static long getFileSize(const char* filename)
 {
     struct stat stat_buf;
     int rc = stat(filename, &stat_buf);
-    return rc == 0 ? stat_buf.st_size : -1;
+    return rc == 0 ? (long)stat_buf.st_size : -1;
 }
 
-unsigned char* lineHome(unsigned char* start, unsigned char* current) {
+static unsigned char* lineHome(unsigned char* start, unsigned char* current) {
     while (current > start && !isPdfEOL(*(current - 1))) {
         current--;
     }
     return current;
 }
 
-unsigned char* previousLineHome(unsigned char* start, unsigned char* current) {
+static unsigned char* previousLineHome(unsigned char* start, unsigned char* current) {
     if (current > start && isPdfEOL(*(current - 1))) {
         current--;
     }
 
     // allows CR+LF, LF+CR but not two CR+CR or LF+LF
     if (current > start && isPdfEOL(*(current - 1)) && *current != *(current - 1)) {
         current--;
     }
 
     while (current > start && !isPdfEOL(*(current - 1))) {
         current--;
     }
 
     return current;
 }
 
-unsigned char* ignoreLine(unsigned char* current, unsigned char* end) {
+static unsigned char* ignoreLine(unsigned char* current, unsigned char* end) {
     while (current < end && !isPdfEOL(*current)) {
         current++;
     }
     current++;
     if (current < end && isPdfEOL(*current) && *current != *(current - 1)) {
         current++;
     }
     return current;
 }
 
@@ skipping 53 matching lines @@
 
     SkPdfObject token;
     while (current < trailerEnd) {
         token.reset();
         unsigned char* previous = current;
         current = nextObject(current, trailerEnd, &token, NULL);
         if (!token.isInteger()) {
             return previous;
         }
 
-        int startId = token.intValue();
+        int startId = (int)token.intValue();
         token.reset();
         current = nextObject(current, trailerEnd, &token, NULL);
 
         if (!token.isInteger()) {
             // TODO(edisonn): report/warning
             return current;
         }
 
-        int entries = token.intValue();
+        int entries = (int)token.intValue();
 
         for (int i = 0; i < entries; i++) {
             token.reset();
             current = nextObject(current, trailerEnd, &token, NULL);
             if (!token.isInteger()) {
                 // TODO(edisonn): report/warning
                 return current;
             }
-            int offset = token.intValue();
+            int offset = (int)token.intValue();
 
             token.reset();
             current = nextObject(current, trailerEnd, &token, NULL);
             if (!token.isInteger()) {
                 // TODO(edisonn): report/warning
                 return current;
             }
-            int generation = token.intValue();
+            int generation = (int)token.intValue();
 
             token.reset();
             current = nextObject(current, trailerEnd, &token, NULL);
             if (!token.isKeyword() || token.len() != 1 || (*token.c_str() != 'f' && *token.c_str() != 'n')) {
                 // TODO(edisonn): report/warning
                 return current;
             }
 
             addCrossSectionInfo(startId + i, generation, offset, *token.c_str() == 'f');
         }
@@ skipping 12 matching lines @@
     if (storeCatalog) {
         const SkPdfObject* ref = trailer->Root(NULL);
         if (ref == NULL || !ref->isReference()) {
             // TODO(edisonn): oops, we have to fix the corrup pdf file
             return -1;
         }
         fRootCatalogRef = ref;
     }
 
     if (trailer->has_Prev()) {
-        return trailer->Prev(NULL);
+        return (long)trailer->Prev(NULL);
     }
 
     return -1;
 }
 
 void SkNativeParsedPDF::addCrossSectionInfo(int id, int generation, int offset, bool isFreed) {
     // TODO(edisonn): security here
     while (fObjects.count() < id + 1) {
         reset(fObjects.append());
     }
@@ skipping 265 matching lines @@
             } else {
                 fObjects[id].fResolvedReference = resolveReference(fObjects[id].fObj);
             }
         }
 
         return fObjects[id].fResolvedReference;
     }
     // TODO(edisonn): fix the mess with const, probably we need to remove it pretty much everywhere
     return (SkPdfObject*)ref;
 }