nethack-gwaa-kiwi/nethack
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allow DEBUGFILES to be overridden via getenv()

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If getenv("DEBUGFILES") yields a value then it takes precedence over
sysconf.DEBUGFILES or sys.c's #define DEBUGFILES.  (It probably should
only be controlled via environment since it is not a system-wide
attribute, but I haven't taken out the SYSCF handling for it.)
This commit is contained in:
PatR
2015-03-16 15:28:01 -07:00
parent 4914e256bf
commit 562fa952ce
3 changed files with 29 additions and 4 deletions
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21
src/files.c
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@@ -1,4 +1,4 @@
/* NetHack 3.5 files.c $NHDT-Date: 1426465435 2015/03/16 00:23:55 $ $NHDT-Branch: debug $:$NHDT-Revision: 1.133 $ */
/* NetHack 3.5 files.c $NHDT-Date: 1426544796 2015/03/16 22:26:36 $ $NHDT-Branch: master $:$NHDT-Revision: 1.134 $ */
/* NetHack 3.5 files.c $Date: 2012/03/10 02:49:08 $ $Revision: 1.124 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
@@ -2157,7 +2157,11 @@ int src;
sysopt.shellers = dupstr(bufp);
} else if (src == SET_IN_SYS && match_varname(buf, "DEBUGFILES", 5)) {
if (sysopt.debugfiles) free(sysopt.debugfiles);
sysopt.debugfiles = dupstr(bufp);
/* if showdebug() has already been called (perhaps we've added
some debugpline() calls to option processing) and has found
a value for getenv("DEBUGFILES"), don't override that */
if (sysopt.env_dbgfl == 0)
sysopt.debugfiles = dupstr(bufp);
} else if (src == SET_IN_SYS && match_varname(buf, "SUPPORT", 7)) {
if (sysopt.support) free(sysopt.support);
sysopt.support = dupstr(bufp);
@@ -3207,6 +3211,19 @@ const char *filename;
if (!filename || !*filename) return FALSE; /* sanity precaution */
if (sysopt.env_dbgfl == 0) {
/* check once for DEBUGFILES in the environment;
if found, it supersedes the sysconf value
[note: getenv() rather than nh_getenv() since a long value
is valid and doesn't pose any sort of overflow risk here] */
if ((p = getenv("DEBUGFILES")) != 0) {
if (sysopt.debugfiles) free(sysopt.debugfiles);
sysopt.debugfiles = dupstr(p);
sysopt.env_dbgfl = 1;
} else
sysopt.env_dbgfl = -1;
}
debugfiles = sysopt.debugfiles;
/* usual case: sysopt.debugfiles will be empty */
if (!debugfiles || !*debugfiles) return FALSE;