voidpf ZCALLBACK fopen_file_func OF()

in util/src/minizip/ioapi.c [48:101]

• 46 lines of code
• 6 McCabe index (conditional complexity)

voidpf ZCALLBACK fopen_file_func OF(
     (voidpf opaque,
      const char *filename,
      int mode));

uLong ZCALLBACK fread_file_func OF(
     (voidpf opaque,
      voidpf stream,
      void *buf,
      uLong size));

uLong ZCALLBACK fwrite_file_func OF(
     (voidpf opaque,
      voidpf stream,
      const void *buf,
      uLong size));

long ZCALLBACK ftell_file_func OF(
     (voidpf opaque,
      voidpf stream));

long ZCALLBACK fseek_file_func OF(
     (voidpf opaque,
      voidpf stream,
      uLong offset,
      int origin));

int ZCALLBACK fclose_file_func OF(
     (voidpf opaque,
      voidpf stream));

int ZCALLBACK ferror_file_func OF(
     (voidpf opaque,
      voidpf stream));

voidpf ZCALLBACK
fopen_file_func(
    voidpf opaque,
    const char *filename,
    int mode)
{
    FILE *file = NULL;
    const char *mode_fopen = NULL;
    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
        mode_fopen = "rb";
    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
        mode_fopen = "r+b";
    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
        mode_fopen = "wb";

    if ((filename) && (mode_fopen != NULL))
        file = fopen(filename, mode_fopen);
    return file;
}