WinIni

winini.c

#include <windows.h>
#include <shlwapi.h>

// (Unicode) Get the required length to store a string of section names.
DWORD GetSectionNamesLengthW(IN LPCWSTR lpFileName)
{
    DWORD bufferLength = 0;
    WCHAR *returnBuffer = NULL;

    if (!PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName))
        return 0;
    do
    {
        returnBuffer = realloc(returnBuffer, sizeof(WCHAR) * (bufferLength += 1));
        GetPrivateProfileSectionNamesW(returnBuffer, bufferLength, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnBuffer);
    return (bufferLength -= 2) != -1 ? bufferLength : 0;
}

// (ANSI) Get the required length to store a string of section names.
DWORD GetSectionNamesLengthA(IN LPCSTR lpFileName)
{
    DWORD bufferLength = 0;
    CHAR *returnBuffer = NULL;

    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName))
        return 0;
    do
    {
        returnBuffer = realloc(returnBuffer, (bufferLength += 1));
        GetPrivateProfileSectionNamesA(returnBuffer, bufferLength, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnBuffer);
    return (bufferLength -= 2) != -1 ? bufferLength : 0;
}

// (Unicode) Get the required length to store a string of key names of the specified section.
DWORD GetKeyNamesLengthW(IN LPCWSTR lpSectionName, IN LPCWSTR lpFileName)
{
    DWORD size = 0;
    WCHAR *returnedString = NULL;

    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName)
        return 0;
    do
    {
        returnedString = realloc(returnedString, sizeof(WCHAR) * (size += 1));
        GetPrivateProfileStringW(lpSectionName, NULL, NULL, returnedString, size, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnedString);
    return (size -= 2) != -1 ? size : 0;
}

// (ANSI) Get the required length to store a string of key names of the specified section.
DWORD GetKeyNamesLengthA(IN LPCSTR lpSectionName, IN LPCSTR lpFileName)
{
    DWORD size = 0;
    CHAR *returnedString = NULL;

    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName)
        return 0;
    do
    {
        returnedString = realloc(returnedString, (size += 1));
        GetPrivateProfileStringA(lpSectionName, NULL, NULL, returnedString, size, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnedString);
    return (size -= 2) != -1 ? size : 0;
}

// (Unicode) Get the required length to store a string of a value of the specified section and key.
DWORD GetKeyValueLengthW(IN LPCWSTR lpSectionName, IN LPCWSTR lpKeyName, IN LPCWSTR lpFileName)
{
    DWORD size = 0;
    WCHAR *returnedString = NULL;

    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName)
        return 0;
    do
    {
        returnedString = realloc(returnedString, sizeof(WCHAR) * (size += 1));
        GetPrivateProfileStringW(lpSectionName, lpKeyName, NULL, returnedString, size, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnedString);
    return (size -= 2) != -1 ? size : 0;
}

// (ANSI) Get the required length to store a string of a value of the specified section and key.
DWORD GetKeyValueLengthA(IN LPCSTR lpSectionName, IN LPCSTR lpKeyName, IN LPCSTR lpFileName)
{
    DWORD size = 0;
    CHAR *returnedString = NULL;

    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName)
        return 0;
    do
    {
        returnedString = realloc(returnedString, sizeof(WCHAR) * (size += 1));
        GetPrivateProfileStringA(lpSectionName, lpKeyName, NULL, returnedString, size, lpFileName);
    } while (GetLastError() == ERROR_MORE_DATA);
    free(returnedString);
    return (size -= 2) != -1 ? size : 0;
}

// (Unicode) Get a string of section names from the specified file.
BOOL GetSectionNamesW(IN OUT LPWSTR lpszReturnBuffer, IN DWORD nSize, IN LPCWSTR lpFileName)
{
    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName))
        return FALSE;
    return GetPrivateProfileSectionNamesW(lpszReturnBuffer, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (ANSI) Get a string of section names from the specified file.
BOOL GetSectionNamesA(IN OUT LPSTR lpszReturnBuffer, IN DWORD nSize, IN LPCSTR lpFileName)
{
    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName))
        return FALSE;
    return GetPrivateProfileSectionNamesA(lpszReturnBuffer, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (Unicode) Get a string of key names from the specified file & section name.
BOOL GetKeyNamesW(IN LPCWSTR lpSectionName, IN OUT LPWSTR lpReturnedString, IN DWORD nSize, IN LPCWSTR lpFileName)
{
    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName)
        return FALSE;
    return GetPrivateProfileStringW(lpSectionName, NULL, NULL, lpReturnedString, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (ANSI) Get a string of key names from the specified file & section name.
BOOL GetKeyNamesA(IN LPCSTR lpSectionName, IN OUT LPSTR lpReturnedString, IN DWORD nSize, IN LPCSTR lpFileName)
{
    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName)
        return FALSE;
    return GetPrivateProfileStringA(lpSectionName, NULL, NULL, lpReturnedString, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (Unicode) Get a string of the value from the specified file, section and key name.
BOOL GetKeyValueW(IN LPCWSTR lpSectionName, IN LPCWSTR lpKeyName, IN OUT LPWSTR lpReturnedString, DWORD nSize, IN LPCWSTR lpFileName)
{
    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName || !lpKeyName)
        return FALSE;
    return GetPrivateProfileStringW(lpSectionName, lpKeyName, NULL, lpReturnedString, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (ANSI) Get a string of the value from the specified file, section and key name.
BOOL GetKeyValueA(IN LPCSTR lpSectionName, IN LPCSTR lpKeyName, IN OUT LPSTR lpReturnedString, DWORD nSize, IN LPCSTR lpFileName)
{
    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName || !lpKeyName)
        return FALSE;
    return GetPrivateProfileStringA(lpSectionName, lpKeyName, NULL, lpReturnedString, nSize, lpFileName) == nSize ? TRUE : FALSE;
}

// (Unicode) Write the the following section name to the specified file.
BOOL WriteSectionNameW(IN LPCWSTR lpSectionName, IN LPCWSTR lpFileName)
{
    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName)
        return FALSE;
    return WritePrivateProfileSectionW(lpSectionName, L"", lpFileName);
}

// (ANSI) Write the following section name to the specified file.
BOOL WriteSectionNameA(IN LPCSTR lpSectionName, IN LPCSTR lpFileName)
{
    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName)
        return FALSE;
    return WritePrivateProfileSectionA(lpSectionName, "", lpFileName) == nSize ? TRUE : FALSE;
}

// (Unicode) Write the following key-value pair to the specified file and section.
BOOL WriteKeyValueW(IN LPCWSTR lpSectionName, IN LPCWSTR lpKeyName, IN LPCWSTR lpString, IN LPCWSTR lpFileName)
{
    if (PathIsRelativeW(lpFileName) || !PathFileExistsW(lpFileName) || !lpSectionName || !lpKeyName || !lpString)
        return FALSE;
    return WritePrivateProfileStringW(lpSectionName, lpKeyName, lpString, lpFileName) == nSize ? TRUE : FALSE;
}

// (ANSI) Write the following key-value pair to the specified file and section.
BOOL WriteKeyValueA(IN LPCSTR lpSectionName, IN LPCSTR lpKeyName, IN LPCSTR lpString, IN LPCSTR lpFileName)
{
    if (PathIsRelativeA(lpFileName) || !PathFileExistsA(lpFileName) || !lpSectionName || !lpKeyName || !lpString)
        return FALSE;
    return WritePrivateProfileStringA(lpSectionName, lpKeyName, lpString, lpFileName) == nSize ? TRUE : FALSE;
}