Add OPTION_NEGBIT and OPT_NEGBIT, mirroring OPTION_BIT and OPT_BIT.
OPT_NEGBIT can be used together with OPT_BIT to define two options
that cancel each other out.
Note: this patch removes the reminder from the test script because
it adds a test for --no-or4 and there already was one for --or4.
Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
---
Documentation/technical/api-parse-options.txt | 4 +++
parse-options.c | 8 ++++++
parse-options.h | 2 +
t/t0040-parse-options.sh | 31 +++++++++++++++++++++++-
test-parse-options.c | 1 +
5 files changed, 44 insertions(+), 2 deletions(-)
diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt
index e66ca9f..794194b 100644
--- a/Documentation/technical/api-parse-options.txt
+++ b/Documentation/technical/api-parse-options.txt
@@ -137,6 +137,10 @@ There are some macros to easily define options:
Introduce a boolean option.
If used, `int_var` is bitwise-ored with `mask`.
+`OPT_NEGBIT(short, long, &int_var, description, mask)`::
+ Introduce a boolean option.
+ If used, `int_var` is bitwise-anded with the inverted `mask`.
+
`OPT_SET_INT(short, long, &int_var, description, integer)`::
Introduce a boolean option.
If used, set `int_var` to `integer`.
diff --git a/parse-options.c b/parse-options.c
index cf71bcf..a8c05e3 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -50,6 +50,7 @@ static int get_value(struct parse_opt_ctx_t *p,
/* FALLTHROUGH */
case OPTION_BOOLEAN:
case OPTION_BIT:
+ case OPTION_NEGBIT:
case OPTION_SET_INT:
case OPTION_SET_PTR:
return opterror(opt, "takes no value", flags);
@@ -66,6 +67,13 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value |= opt->defval;
return 0;
+ case OPTION_NEGBIT:
+ if (unset)
+ *(int *)opt->value |= opt->defval;
+ else
+ *(int *)opt->value &= ~opt->defval;
+ return 0;
+
case OPTION_BOOLEAN:
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
diff --git a/parse-options.h b/parse-options.h
index b54eec1..f1e2452 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -8,6 +8,7 @@ enum parse_opt_type {
OPTION_GROUP,
/* options with no arguments */
OPTION_BIT,
+ OPTION_NEGBIT,
OPTION_BOOLEAN, /* _INCR would have been a better name */
OPTION_SET_INT,
OPTION_SET_PTR,
@@ -93,6 +94,7 @@ struct option {
#define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, (h) }
#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
#define OPT_BIT(s, l, v, h, b) { OPTION_BIT, (s), (l), (v), NULL, (h), 0, NULL, (b) }
+#define OPT_NEGBIT(s, l, v, h, b) { OPTION_NEGBIT, (s), (l), (v), NULL, (h), 0, NULL, (b) }
#define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
#define OPT_SET_INT(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, (h), 0, NULL, (i) }
#define OPT_SET_PTR(s, l, v, h, p) { OPTION_SET_PTR, (s), (l), (v), NULL, (h), 0, NULL, (p) }
diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
index e38241c..9054ed6 100755
--- a/t/t0040-parse-options.sh
+++ b/t/t0040-parse-options.sh
@@ -12,6 +12,7 @@ usage: test-parse-options <options>
-b, --boolean get a boolean
-4, --or4 bitwise-or boolean with ...0100
+ --neg-or4 same as --no-or4
-i, --integer <n> get a integer
-j <n> get a integer, too
@@ -245,7 +246,33 @@ test_expect_success 'OPT_BIT() and OPT_SET_INT() work' '
test_cmp expect output
'
-# --or4
-# --no-or4
+test_expect_success 'OPT_NEGBIT() and OPT_SET_INT() work' '
+ test-parse-options --set23 -bbbbb --neg-or4 > output 2> output.err &&
+ test ! -s output.err &&
+ test_cmp expect output
+'
+
+cat > expect <<EOF
+boolean: 6
+integer: 0
+timestamp: 0
+string: (not set)
+abbrev: 7
+verbose: 0
+quiet: no
+dry run: no
+EOF
+
+test_expect_success 'OPT_BIT() works' '
+ test-parse-options -bb --or4 > output 2> output.err &&
+ test ! -s output.err &&
+ test_cmp expect output
+'
+
+test_expect_success 'OPT_NEGBIT() works' '
+ test-parse-options -bb --no-neg-or4 > output 2> output.err &&
+ test ! -s output.err &&
+ test_cmp expect output
+'
test_done
diff --git a/test-parse-options.c b/test-parse-options.c
index 61d2c39..eddc026 100644
--- a/test-parse-options.c
+++ b/test-parse-options.c
@@ -29,6 +29,7 @@ int main(int argc, const char **argv)
OPT_BOOLEAN('b', "boolean", &boolean, "get a boolean"),
OPT_BIT('4', "or4", &boolean,
"bitwise-or boolean with ...0100", 4),
+ OPT_NEGBIT(0, "neg-or4", &boolean, "same as --no-or4", 4),
OPT_GROUP(""),
OPT_INTEGER('i', "integer", &integer, "get a integer"),
OPT_INTEGER('j', NULL, &integer, "get a integer, too"),
--
1.6.3
--
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