gb_stdio.h

00001 // Copyright (c) Microsoft. All rights reserved.
00002 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
00003 
00004 #ifndef GB_STDIO_H
00005 #define GB_STDIO_H
00006 
00007 /*this file, if included instead of <stdio.h> has the following functionality:
00008 1) if GB_STDIO_INTERCEPT is defined then
00009     a) some of the stdio.h symbols shall be redefined, for example: fopen => gb_fopen
00010     b) all "code" using the fopen will actually (because of the preprocessor) call to gb_fopen
00011     c) gb_fopen shall blindly call into fopen, thus realizing a passthrough
00012     
00013     reason is: unittesting. fopen is comes with the C Run Time and cannot be mocked (that is, in the global namespace cannot exist a function called fopen
00014 
00015 2) if GB_STDIO_INTERCEPT is not defined then
00016     a) it shall include <stdio.h> => no passthrough, just direct linking.
00017 */
00018 
00019 #ifndef GB_STDIO_INTERCEPT
00020 #include <stdio.h>
00021 #else
00022 
00023 /*source level intercepting of function calls*/
00024 #define fopen           fopen_never_called_never_implemented_always_forgotten
00025 #define fclose          fclose_never_called_never_implemented_always_forgotten
00026 #define fseek           fseek_never_called_never_implemented_always_forgotten
00027 #define ftell           ftell_never_called_never_implemented_always_forgotten
00028 #define fprintf         fprintf_never_called_never_implemented_always_forgotten
00029 
00030 #include "azure_c_shared_utility/umock_c_prod.h"
00031 
00032 
00033 #ifdef __cplusplus
00034 #include <cstdio.h>
00035 extern "C"
00036 {
00037 #else
00038 #include <stdio.h>
00039 #endif
00040 
00041 #undef fopen
00042 #define fopen gb_fopen
00043 MOCKABLE_FUNCTION(, FILE*, gb_fopen, const char*, filename, const char*, mode);
00044 
00045 
00046 #undef fclose
00047 #define fclose gb_fclose
00048 MOCKABLE_FUNCTION(, int, fclose, FILE *, stream);
00049 
00050 #undef fseek
00051 #define fseek gb_fseek
00052 MOCKABLE_FUNCTION(, int, fseek, FILE *,stream, long int, offset, int, whence);
00053 
00054 #undef ftell
00055 #define ftell gb_ftell
00056 MOCKABLE_FUNCTION(, long int, ftell, FILE *, stream);
00057 
00058 #undef fprintf
00059 #define fprintf gb_fprintf
00060 extern int fprintf(FILE * stream, const char * format, ...);
00061 
00062 
00063 #ifdef __cplusplus
00064 }
00065 #endif
00066 
00067 #endif /*GB_STDIO_INTERCEPT*/
00068 
00069 #endif /* GB_STDIO_H */