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/* libjodycode version checks
*
* Code to embed the libjodycode version info and check against the currently
* linked libjodycode to check for and report incompatibilities
*
* Copyright (C) 2023 by Jody Bruchon <jody@jodybruchon.com>
* Licensed under The MIT License */
#include <stdio.h>
#include <stdlib.h>
#include <libjodycode.h>
#include "libjodycode_check.h"
#include "libjodycode_check_defs.h"
#ifdef JC_TEST
#define JC_TEST_ONLY(a) a
#else
#define JC_TEST_ONLY(a)
#endif
const char *jc_build_version = LIBJODYCODE_VER;
const int jc_build_api_version = LIBJODYCODE_API_VERSION;
const int jc_build_api_featurelevel = LIBJODYCODE_API_FEATURE_LEVEL;
const int jc_build_min_featurelevel = MY_FEATURELEVEL_REQ;
/* API sub-version info array, terminated with 255
* The user-defined part has moved to libjodycode_check_defs.h
* Do not edit this file, edit that one instead! */
/* Build the array data using user definitions */
#if MY_CACHEINFO_REQ == 255
#undef MY_CACHEINFO_REQ
#define MY_CACHEINFO_REQ LIBJODYCODE_CACHEINFO_VER
#endif
#if MY_JODY_HASH_REQ == 255
#undef MY_JODY_HASH_REQ
#define MY_JODY_HASH_REQ LIBJODYCODE_JODY_HASH_VER
#endif
#if MY_OOM_REQ == 255
#undef MY_OOM_REQ
#define MY_OOM_REQ LIBJODYCODE_OOM_VER
#endif
#if MY_PATHS_REQ == 255
#undef MY_PATHS_REQ
#define MY_PATHS_REQ LIBJODYCODE_PATHS_VER
#endif
#if MY_SIZE_SUFFIX_REQ == 255
#undef MY_SIZE_SUFFIX_REQ
#define MY_SIZE_SUFFIX_REQ LIBJODYCODE_SIZE_SUFFIX_VER
#endif
#if MY_SORT_REQ == 255
#undef MY_SORT_REQ
#define MY_SORT_REQ LIBJODYCODE_SORT_VER
#endif
#if MY_STRING_REQ == 255
#undef MY_STRING_REQ
#define MY_STRING_REQ LIBJODYCODE_STRING_VER
#endif
#if MY_STRTOEPOCH_REQ == 255
#undef MY_STRTOEPOCH_REQ
#define MY_STRTOEPOCH_REQ LIBJODYCODE_STRTOEPOCH_VER
#endif
#if MY_WIN_STAT_REQ == 255
#undef MY_WIN_STAT_REQ
#define MY_WIN_STAT_REQ LIBJODYCODE_WIN_STAT_VER
#endif
#if MY_WIN_UNICODE_REQ == 255
#undef MY_WIN_UNICODE_REQ
#define MY_WIN_UNICODE_REQ LIBJODYCODE_WIN_UNICODE_VER
#endif
#if MY_ERROR_REQ == 255
#undef MY_ERROR_REQ
#define MY_ERROR_REQ LIBJODYCODE_ERROR_VER
#endif
#if MY_ALARM_REQ == 255
#undef MY_ALARM_REQ
#define MY_ALARM_REQ LIBJODYCODE_ALARM_VER
#endif
const unsigned char jc_build_api_versiontable[] = {
MY_CACHEINFO_REQ,
MY_JODY_HASH_REQ,
MY_OOM_REQ,
MY_PATHS_REQ,
MY_SIZE_SUFFIX_REQ,
MY_SORT_REQ,
MY_STRING_REQ,
MY_STRTOEPOCH_REQ,
MY_WIN_STAT_REQ,
MY_WIN_UNICODE_REQ,
MY_ERROR_REQ,
MY_ALARM_REQ,
255
};
const char *jc_versiontable_section[] = {
"cacheinfo",
"jody_hash",
"oom",
"paths",
"size_suffix",
"sort",
"string",
"strtoepoch",
"win_stat",
"win_unicode",
"error",
"alarm",
NULL
};
int libjodycode_version_check(int verbose, int bail)
{
const unsigned char * const restrict build = jc_build_api_versiontable;
const unsigned char * const restrict lib = jc_api_versiontable;
int i = 0;
JC_TEST_ONLY(if (verbose > 1) fprintf(stderr, "libjodycode version check test code\n\n");)
/* Force a version dump if requested */
while (build[i] != 255) {
JC_TEST_ONLY(if (verbose > 1) fprintf(stderr, "API %d: %s: builtin ver %u, lib ver %u\n", i, jc_versiontable_section[i], build[i], lib[i]);)
if (build[i] != 0 && (lib[i] == 0 || build[i] != lib[i])) goto incompatible_versiontable;
i++;
}
JC_TEST_ONLY(if (verbose > 1) goto incompatible_versiontable;)
return 0;
incompatible_versiontable:
if (verbose) {
fprintf(stderr, "\n==============================================================================\n");
fprintf(stderr, "internal error: libjodycode on this system is an incompatible version\n\n");
fprintf(stderr, "Currently using libjodycode v%s, API %d, feature level %d\n",
jc_version, jc_api_version, jc_api_featurelevel);
fprintf(stderr, " Built against libjodycode v%s, API %d, feature level %d\n\n",
jc_build_version, jc_build_api_version, jc_build_api_featurelevel);
if (jc_build_min_featurelevel > jc_build_api_featurelevel)
fprintf(stderr, "libjodycode feature level %d is required but linked library is level %d\n",
jc_build_min_featurelevel, jc_build_api_featurelevel);
if (lib[i] == 0) fprintf(stderr, "API sections are missing in libjodycode; it's probably too old.\n");
else fprintf(stderr, "The first incompatible API section found is '%s' (want v%d, got v%d).\n",
jc_versiontable_section[i], build[i], lib[i]);
fprintf(stderr, "==============================================================================\n\n");
fprintf(stderr, "\nUpdate libjodycode on your system and try again. If you continue to get this\n");
fprintf(stderr, "error, contact the package or distribution maintainer. If all else fails, send\n");
fprintf(stderr, "an email to jody@jodybruchon.com for help (but only as a last resort, please.)\n\n");
}
if (bail) exit(EXIT_FAILURE);
return 1;
}
#ifdef JC_TEST
int main(void)
{
libjodycode_version_check(2, 0);
return 0;
}
#endif
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