127 lines
4.9 KiB
C
127 lines
4.9 KiB
C
/*
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Copyright (c) 1990-2009 Info-ZIP. All rights reserved.
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See the accompanying file LICENSE, version 2009-Jan-02 or later
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(the contents of which are also included in unzip.h) for terms of use.
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If, for some reason, all these files are missing, the Info-ZIP license
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also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
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*/
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/*---------------------------------------------------------------------------
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unzipstb.c
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Simple stub function for UnZip DLL (or shared library, whatever); does
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exactly the same thing as normal UnZip, except for additional printf()s
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of various version numbers, solely as a demonstration of what can/should
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be checked when using the DLL. (If major version numbers ever differ,
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assume program is incompatible with DLL--especially if DLL version is
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older. This is not likely to be a problem with *this* simple program,
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but most user programs will be much more complex.)
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---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include "unzip.h"
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#if defined(MODERN) && !defined(NO_STDDEF_H)
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# include <stddef.h>
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#endif
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#include "unzvers.h"
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int main(int argc, char *argv[])
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{
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static ZCONST UzpVer *pVersion; /* no pervert jokes, please... */
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pVersion = UzpVersion();
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printf("UnZip stub: checking version numbers (DLL is dated %s)\n",
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pVersion->date);
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printf(" UnZip versions: expecting %u.%u%u, using %u.%u%u%s\n",
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UZ_MAJORVER, UZ_MINORVER, UZ_PATCHLEVEL, pVersion->unzip.major,
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pVersion->unzip.minor, pVersion->unzip.patchlevel, pVersion->betalevel);
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printf(" ZipInfo versions: expecting %u.%u%u, using %u.%u%u\n",
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ZI_MAJORVER, ZI_MINORVER, UZ_PATCHLEVEL, pVersion->zipinfo.major,
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pVersion->zipinfo.minor, pVersion->zipinfo.patchlevel);
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/*
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D2_M*VER and os2dll.* are obsolete, though retained for compatibility:
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printf(" OS2 DLL versions: expecting %u.%u%u, using %u.%u%u\n",
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D2_MAJORVER, D2_MINORVER, D2_PATCHLEVEL, pVersion->os2dll.major,
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pVersion->os2dll.minor, pVersion->os2dll.patchlevel);
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*/
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if (pVersion->flag & 2)
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printf(" using zlib version %s\n", pVersion->zlib_version);
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/* This example code only uses the dll calls UzpVersion() and
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* UzpMain(). The APIs for these two calls have maintained backward
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* compatibility since at least the UnZip release 5.3 !
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*/
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# define UZDLL_MINVERS_MAJOR 5
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# define UZDLL_MINVERS_MINOR 3
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# define UZDLL_MINVERS_PATCHLEVEL 0
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/* This UnZip DLL stub requires a DLL version of at least: */
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if ( (pVersion->unzip.major < UZDLL_MINVERS_MAJOR) ||
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((pVersion->unzip.major == UZDLL_MINVERS_MAJOR) &&
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((pVersion->unzip.minor < UZDLL_MINVERS_MINOR) ||
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((pVersion->unzip.minor == UZDLL_MINVERS_MINOR) &&
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(pVersion->unzip.patchlevel < UZDLL_MINVERS_PATCHLEVEL)
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)
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)
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) )
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{
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printf(" aborting because of too old UnZip DLL version!\n");
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return -1;
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}
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/* In case the offsetof() macro is not supported by some C compiler
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environment, it might be replaced by something like:
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((extent)(void *)&(((UzpVer *)0)->dllapimin))
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*/
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if (pVersion->structlen >=
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#if defined(MODERN) && !defined(NO_STDDEF_H)
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( offsetof(UzpVer, dllapimin)
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#else
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((unsigned)&(((UzpVer *)0)->dllapimin))
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#endif
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+ sizeof(_version_type) ))
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{
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#ifdef OS2DLL
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# define UZ_API_COMP_MAJOR UZ_OS2API_COMP_MAJOR
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# define UZ_API_COMP_MINOR UZ_OS2API_COMP_MINOR
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# define UZ_API_COMP_REVIS UZ_OS2API_COMP_REVIS
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#else /* !OS2DLL */
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#ifdef WINDLL
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# define UZ_API_COMP_MAJOR UZ_WINAPI_COMP_MAJOR
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# define UZ_API_COMP_MINOR UZ_WINAPI_COMP_MINOR
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# define UZ_API_COMP_REVIS UZ_WINAPI_COMP_REVIS
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#else /* !WINDLL */
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# define UZ_API_COMP_MAJOR UZ_GENAPI_COMP_MAJOR
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# define UZ_API_COMP_MINOR UZ_GENAPI_COMP_MINOR
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# define UZ_API_COMP_REVIS UZ_GENAPI_COMP_REVIS
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#endif /* ?WINDLL */
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#endif /* ?OS2DLL */
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printf(
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" UnZip API version: can handle <= %u.%u%u, DLL supplies %u.%u%u\n",
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UZ_API_COMP_MAJOR, UZ_API_COMP_MINOR, UZ_API_COMP_REVIS,
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pVersion->dllapimin.major, pVersion->dllapimin.minor,
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pVersion->dllapimin.patchlevel);
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if ( (pVersion->dllapimin.major > UZ_API_COMP_MAJOR) ||
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((pVersion->dllapimin.major == UZ_API_COMP_MAJOR) &&
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((pVersion->dllapimin.minor > UZ_API_COMP_MINOR) ||
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((pVersion->dllapimin.minor == UZ_API_COMP_MINOR) &&
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(pVersion->dllapimin.patchlevel > UZ_API_COMP_REVIS)
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)
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)
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) )
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{
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printf(" aborting because of unsupported dll api version!\n");
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return -1;
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}
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}
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printf("\n");
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/* call the actual UnZip routine (string-arguments version) */
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return UzpMain(argc, argv);
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}
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