parseopt: make usage optional
Allow usagestr to be NULL and don't display any help screen in this case. This is useful to implement incremental parsers. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
René Scharfe committed
Mar 8, 2009 at 19:16 UTC
49b6180252000e37ec47ccb4156240ed625949ed
1 file changed
+3
parse-options.c
+3
@@ -364,6 +364,9 @@ int parse_options(int argc, const char **argv, const struct option *options,
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int usage_with_options_internal(const char * const *usagestr,
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const struct option *opts, int full)
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{
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+ if (!usagestr)
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+ return PARSE_OPT_HELP;
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+
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fprintf(stderr, "usage: %s\n", *usagestr++);
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while (*usagestr && **usagestr)
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fprintf(stderr, " or: %s\n", *usagestr++);