Fixed #2 createEmptyFile

Author: sea5kg

README.md

@@ -195,6 +195,16 @@ if (WSJCppCore::removeFile("./file.txt")) {
 }
 ```
 
+### createEmptyFile
+
+Creating empty file. Will return true if file not exists and do created
+
+```
+if (WSJCppCore::createEmptyFile("./file.txt")) {
+    std::cout << "Empty file created" << std::endl;
+}
+```
+
 ### trim
 
 ```

src/wsjcpp_core.cpp

@@ -364,6 +364,21 @@ bool WSJCppCore::removeFile(const std::string &sFilename) {
 
 // ---------------------------------------------------------------------
 
+bool WSJCppCore::createEmptyFile(const std::string &sFilename) {
+    if (WSJCppCore::fileExists(sFilename)) {
+        return false;
+    }
+    std::ofstream f(sFilename, std::ios::out | std::ios::binary);
+    if (!f) {
+        std::cout << "FAILED could not create file to wtite " << sFilename << std::endl;
+        return false;
+    }
+    f.close();
+    return true;
+}
+
+// ---------------------------------------------------------------------
+
 std::string& WSJCppCore::ltrim(std::string& str, const std::string& chars) {
     str.erase(0, str.find_first_not_of(chars));
     return str;

src/wsjcpp_core.h

@@ -40,6 +40,7 @@ class WSJCppCore {
         static bool readTextFile(const std::string &sFilename, std::string &sOutputContent);
         static bool writeFile(const std::string &sFilename, const char *pBuffer, const int nBufferSize);
         static bool removeFile(const std::string &sFilename);
+        static bool createEmptyFile(const std::string &sFilename);
 
         static std::string& ltrim(std::string& str, const std::string& chars = "\t\n\v\f\r ");
         static std::string& rtrim(std::string& str, const std::string& chars = "\t\n\v\f\r ");
@@ -59,6 +60,8 @@ class WSJCppCore {
 
         static std::string encodeUriComponent(const std::string& sValue);
         static std::string decodeUriComponent(const std::string& sValue);
+
+        
 };
 
 

unit-tests.wsjcpp/.gitignore

@@ -2,6 +2,7 @@ tmp/*
 logs/*
 unit-tests
 .wsjcpp/*
+data/empty.txt
 
 # Vim temp files
 *.swp

unit-tests.wsjcpp/CMakeLists.txt

@@ -53,6 +53,8 @@ list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_uint2_hex_string
 list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_uint2_hex_string.cpp")
 list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_split.h")
 list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_split.cpp")
+list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_create_empty_file.h")
+list (APPEND WSJCPP_SOURCES "../unit-tests.wsjcpp/src/unit_test_create_empty_file.cpp")
 
 include(${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.user-custom.txt)
 

unit-tests.wsjcpp/data/testreadfile.txt

@@ -0,0 +1,32 @@
+#include "unit_test_create_empty_file.h"
+#include <vector>
+#include <wsjcpp_core.h>
+
+REGISTRY_UNIT_TEST(UnitTestCreateEmptyFile)
+
+UnitTestCreateEmptyFile::UnitTestCreateEmptyFile()
+    : WSJCppUnitTestBase("UnitTestCreateEmptyFile") {
+}
+
+// ---------------------------------------------------------------------
+
+void UnitTestCreateEmptyFile::init() {
+    // nothing
+}
+
+// ---------------------------------------------------------------------
+
+bool UnitTestCreateEmptyFile::run() {
+    bool bTestSuccess = true;
+    compareB(bTestSuccess, "./data/", WSJCppCore::dirExists("./data/"), true);
+    std::string sFilename = "./data/empty.txt";
+    if (WSJCppCore::fileExists(sFilename)) {
+        WSJCppCore::removeFile(sFilename);
+    }
+    compareB(bTestSuccess, "fileExists 1: " + sFilename, WSJCppCore::fileExists(sFilename), false);
+    compareB(bTestSuccess, "createEmptyFile 1: " + sFilename, WSJCppCore::createEmptyFile(sFilename), true);
+    compareB(bTestSuccess, "createEmptyFile 2: " + sFilename, WSJCppCore::createEmptyFile(sFilename), false);
+    compareB(bTestSuccess, "fileExists 2: " + sFilename, WSJCppCore::fileExists(sFilename), true);
+    return bTestSuccess;
+}
+

unit-tests.wsjcpp/src/unit_test_create_empty_file.cpp

@@ -0,0 +1,15 @@
+#ifndef UNIT_TEST_CREATE_EMPTY_FILE_H
+#define UNIT_TEST_CREATE_EMPTY_FILE_H
+
+#include <wsjcpp_unit_tests.h>
+
+// Description: TODO
+class UnitTestCreateEmptyFile : public WSJCppUnitTestBase {
+    public:
+        UnitTestCreateEmptyFile();
+        virtual void init();
+        virtual bool run();
+};
+
+#endif // UNIT_TEST_CREATE_EMPTY_FILE_H
+

unit-tests.wsjcpp/src/unit_test_create_empty_file.h

@@ -60,3 +60,5 @@ unit-tests:
       description: "Test convert unsigned int to hex string"
     - name: "Split"
       description: "Test split function"
+    - name: "CreateEmptyFile"
+      description: "Test create empty file"