99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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Copyright Rene Rivera 2011-2015
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/predef/detail/test_def.h>
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const char * str_token(const char ** str, const char * space)
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{
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unsigned span;
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char * token;
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for (; **str != 0; *str += 1)
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{
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if (0 == strchr(space, **str))
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{
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break;
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}
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}
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span = strcspn(*str, space);
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token = (char *)malloc(span+1);
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strncpy(token, *str, span);
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token[span] = 0;
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for (*str += span; **str != 0; *str += 1)
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{
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if (0 == strchr(space, **str))
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{
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break;
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}
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}
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return token;
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}
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const char * whitespace = " ";
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const char * dot = ".";
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int main(int argc, const char ** argv)
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{
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unsigned x = 0;
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int argi = 1;
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create_predef_entries();
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#if 0
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qsort(generated_predef_info,generated_predef_info_count,
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sizeof(predef_info),predef_info_compare);
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for (x = 0; x < generated_predef_info_count; ++x)
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{
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printf("%s: %d\n", generated_predef_info[x].name, generated_predef_info[x].value);
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}
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#endif
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int result = -1;
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for (argi = 1; argi < argc; ++argi)
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{
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const char * exp = argv[argi];
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const char * exp_name = str_token(&exp, whitespace);
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const char * exp_op = str_token(&exp, whitespace);
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const char * exp_val = str_token(&exp, whitespace);
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unsigned exp_version = 0;
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if (*exp_val != 0)
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{
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exp = exp_val;
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const char * exp_val_a = str_token(&exp, dot);
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const char * exp_val_b = str_token(&exp, dot);
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const char * exp_val_c = str_token(&exp, dot);
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exp_version = BOOST_VERSION_NUMBER(atoi(exp_val_a), atoi(exp_val_b),atoi(exp_val_c));
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}
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for (x = 0; x < generated_predef_info_count; ++x)
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{
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if (*exp_op == 0 &&
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generated_predef_info[x].value > 0 &&
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strcmp(exp_name, generated_predef_info[x].name) == 0)
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{
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/* Expression of the form "BOOST_x_yy" is true. */
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result = 0;
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break;
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}
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else if (*exp_op == 0 &&
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generated_predef_info[x].value == 0 &&
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strcmp(exp_name, generated_predef_info[x].name) == 0)
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{
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/* Expression of the form "BOOST_x_yy" is false. */
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return argi;
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}
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else if (*exp_op != 0 && *exp_val != 0 &&
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strcmp(exp_name, generated_predef_info[x].name) == 0)
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{
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/* Expression of the form "BOOST_x_yy op val". */
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result = 0;
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if (0 == strcmp(">",exp_op) && !(generated_predef_info[x].value > exp_version)) return argi;
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if (0 == strcmp("<",exp_op) && !(generated_predef_info[x].value < exp_version)) return argi;
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if (0 == strcmp(">=",exp_op) && !(generated_predef_info[x].value >= exp_version)) return argi;
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if (0 == strcmp("<=",exp_op) && !(generated_predef_info[x].value <= exp_version)) return argi;
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if (0 == strcmp("==",exp_op) && !(generated_predef_info[x].value == exp_version)) return argi;
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if (0 == strcmp("!=",exp_op) && !(generated_predef_info[x].value != exp_version)) return argi;
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}
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}
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}
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return result;
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}
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