do not treat directories like regular files in existence checks

Author: firewave

main.cpp

@@ -121,6 +121,10 @@ int main(int argc, char **argv)
             std::cout << "error: could not open file '" << filename << "'" << std::endl;
             std::exit(1);
         }
+        if (!simplecpp::isFile(filename)) {
+            std::cout << "error: could not open file '" << filename << "' - not a regular file" << std::endl;
+            std::exit(1);
+        }
         rawtokens = new simplecpp::TokenList(f, files,filename,&outputList);
     } else {
         rawtokens = new simplecpp::TokenList(filename,files,&outputList);

simplecpp.cpp

@@ -2981,9 +2981,11 @@ static std::string openHeaderDirect(std::ifstream &f, const std::string &path)
     if (nonExistingFilesCache.contains(path))
         return "";  // file is known not to exist, skip expensive file open call
 #endif
-    f.open(path.c_str());
-    if (f.is_open())
-        return path;
+    if (simplecpp::isFile(path)) {
+        f.open(path.c_str());
+        if (f.is_open())
+            return path;
+    }
 #ifdef SIMPLECPP_WINDOWS
     nonExistingFilesCache.add(path);
 #endif
@@ -3104,6 +3106,9 @@ bool simplecpp::FileDataCache::getFileId(const std::string &path, FileID &id)
     if (stat(path.c_str(), &statbuf) != 0)
         return false;
 
+    if ((statbuf.st_mode & S_IFMT) != S_IFREG)
+        return false;
+
     id.dev = statbuf.st_dev;
     id.ino = statbuf.st_ino;
 

test.cpp

@@ -2052,6 +2052,44 @@ static void missingHeader4()
     ASSERT_EQUALS("file0,1,syntax_error,No header in #include\n", toString(outputList));
 }
 
+#ifndef _WIN32
+static void missingHeader5()
+{
+    // this is a directory
+    const char code[] = "#include \"/\"\n";
+    simplecpp::OutputList outputList;
+    ASSERT_EQUALS("", preprocess(code, &outputList));
+    ASSERT_EQUALS("file0,1,missing_header,Header not found: \"/\"\n", toString(outputList));
+}
+
+static void missingHeader6()
+{
+    // this is a directory
+    const char code[] = "#include \"/usr\"\n";
+    simplecpp::OutputList outputList;
+    ASSERT_EQUALS("", preprocess(code, &outputList));
+    ASSERT_EQUALS("file0,1,missing_header,Header not found: \"/usr\"\n", toString(outputList));
+}
+
+static void missingHeader7()
+{
+    // this is a directory
+    const char code[] = "#include </>\n";
+    simplecpp::OutputList outputList;
+    ASSERT_EQUALS("", preprocess(code, &outputList));
+    ASSERT_EQUALS("file0,1,missing_header,Header not found: </>\n", toString(outputList));
+}
+
+static void missingHeader8()
+{
+    // this is a directory
+    const char code[] = "#include </usr>\n";
+    simplecpp::OutputList outputList;
+    ASSERT_EQUALS("", preprocess(code, &outputList));
+    ASSERT_EQUALS("file0,1,missing_header,Header not found: </usr>\n", toString(outputList));
+}
+#endif
+
 static void nestedInclude()
 {
     const char code[] = "#include \"test.h\"\n";
@@ -3312,6 +3350,12 @@ int main(int argc, char **argv)
     TEST_CASE(missingHeader2);
     TEST_CASE(missingHeader3);
     TEST_CASE(missingHeader4);
+#ifndef _WIN32
+    TEST_CASE(missingHeader5);
+    TEST_CASE(missingHeader6);
+    TEST_CASE(missingHeader7);
+    TEST_CASE(missingHeader8);
+#endif
     TEST_CASE(nestedInclude);
     TEST_CASE(systemInclude);