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Add --version as a pcre2test option, and add a comment to config.

This commit is contained in:
Philip.Hazel 2014-06-23 17:07:24 +00:00
parent 2a1dc104ed
commit 200ca3f1b4
2 changed files with 41 additions and 16 deletions
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23
src/pcre2_config.c
View File

@ -143,16 +143,31 @@ FIXME: This needs re-design.
#endif
break;
/* The hackery in setting "v" below is to cope with the case when
PCRE2_PRERELEASE is set to an empty string (which it is for real releases).
If the second alternative is used in this case, it does not leave a space
before the date. On the other hand, if all four macros are put into a single
XSTRING when PCRE2_PRERELEASE is not empty, an unwanted space is inserted.
There are problems using an "obvious" approach like this:
XSTRING(PCRE2_MAJOR) "." XSTRING(PCRE_MINOR)
XSTRING(PCRE2_PRERELEASE) " " XSTRING(PCRE_DATE)
because, when PCRE2_PRERELEASE is empty, this leads to an attempted expansion
of STRING(). The C standard states: "If (before argument substitution) any
argument consists of no preprocessing tokens, the behavior is undefined." It
turns out the gcc treats this case as a single empty string - which is what
we really want - but Visual C grumbles about the lack of an argument for the
macro. Unfortunately, both are within their rights. As there seems to be no
way to test for a macro's value being empty at compile time, we have to
resort to a runtime test. */
case PCRE2_CONFIG_VERSION:
{
PCRE2_UCHAR *t = (PCRE2_UCHAR *)where;
/*
const char *v = (XSTRING(Z PCRE2_PRERELEASE)[1] == 0)?
XSTRING(PCRE2_MAJOR.PCRE2_MINOR PCRE2_DATE) :
XSTRING(PCRE2_MAJOR.PCRE2_MINOR) XSTRING(PCRE2_PRERELEASE PCRE2_DATE);
*/
const char *v = XSTRING(PCRE2_MAJOR.PCRE2_MINOR)
XSTRING(PCRE2_PRERELEASE PCRE2_DATE);
if (strlen(v) >= BYTES2CU(length) - 1) return PCRE2_ERROR_BADLENGTH;
while (*v != 0) *t++ = *v++;
*t = 0;

14
src/pcre2test.c
View File

@ -4678,8 +4678,8 @@ printf(" -32 use the 32-bit library\n");
#endif
printf(" -b set default pattern control 'fullbincode'\n");
printf(" -C show PCRE2 compile-time options and exit\n");
printf(" -C arg show a specific compile-time option and exit\n");
printf(" with its value if numeric (else 0). The arg can be:\n");
printf(" -C arg show a specific compile-time option and exit with its\n");
printf(" value if numeric (else 0). The arg can be:\n");
printf(" bsr \\R type [ANYCRLF, ANY]\n");
printf(" ebcdic compiled for EBCDIC character code [0,1]\n");
printf(" ebcdic-nl NL code if compiled for EBCDIC\n");
@ -4701,6 +4701,7 @@ printf(" -t [<n>] time compilation and execution, repeating <n> times\n");
printf(" -tm [<n>] time execution (matching) only, repeating <n> times\n");
printf(" -T same as -t, but show total times at the end\n");
printf(" -TM same as -tm, but show total time at the end\n");
printf(" -version show PCRE2 version and exit\n");
}
@ -5015,6 +5016,15 @@ while (argc > 1 && argv[op][0] == '-')
goto EXIT;
}
/* Show version */
else if (strcmp(arg, "-version") == 0 ||
strcmp(arg, "--version") == 0)
{
print_version(stdout);
goto EXIT;
}
/* The following options save their data for processing once we know what
the running mode is. */