Add two functions that allow to replace and remove strings contained in
the strvec. This will be used by a subsequent commit that refactors
git-mv(1).
While at it, add a bunch of unit tests that cover both old and new
functionality.
Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
Makefile | 1 +
strvec.c | 20 ++++
strvec.h | 13 ++
t/unit-tests/t-strvec.c | 259 ++++++++++++++++++++++++++++++++++++++++
t/unit-tests/test-lib.c | 13 ++
t/unit-tests/test-lib.h | 13 ++
6 files changed, 319 insertions(+)
create mode 100644 t/unit-tests/t-strvec.c
diff --git a/Makefile b/Makefile
index cf504963c2..d4000fb1d6 100644
--- a/Makefile
+++ b/Makefile
@@ -1336,6 +1336,7 @@ THIRD_PARTY_SOURCES += sha1dc/%
UNIT_TEST_PROGRAMS += t-mem-pool
UNIT_TEST_PROGRAMS += t-strbuf
+UNIT_TEST_PROGRAMS += t-strvec
UNIT_TEST_PROGRAMS += t-ctype
UNIT_TEST_PROGRAMS += t-prio-queue
UNIT_TEST_PROGS = $(patsubst %,$(UNIT_TEST_BIN)/%$X,$(UNIT_TEST_PROGRAMS))
diff --git a/strvec.c b/strvec.c
index 178f4f3748..d4073ec9fa 100644
--- a/strvec.c
+++ b/strvec.c
@@ -56,6 +56,26 @@ void strvec_pushv(struct strvec *array, const char **items)
strvec_push(array, *items);
}
+const char *strvec_replace(struct strvec *array, size_t idx, const char *replacement)
+{
+ char *to_free;
+ if (idx >= array->nr)
+ BUG("index outside of array boundary");
+ to_free = (char *) array->v[idx];
+ array->v[idx] = xstrdup(replacement);
+ free(to_free);
+ return array->v[idx];
+}
+
+void strvec_remove(struct strvec *array, size_t idx)
+{
+ if (idx >= array->nr)
+ BUG("index outside of array boundary");
+ free((char *)array->v[idx]);
+ memmove(array->v + idx, array->v + idx + 1, (array->nr - idx) * sizeof(char *));
+ array->nr--;
+}
+
void strvec_pop(struct strvec *array)
{
if (!array->nr)
diff --git a/strvec.h b/strvec.h
index 4715d3e51f..6c7e8b7d50 100644
--- a/strvec.h
+++ b/strvec.h
@@ -64,6 +64,19 @@ void strvec_pushl(struct strvec *, ...);
/* Push a null-terminated array of strings onto the end of the array. */
void strvec_pushv(struct strvec *, const char **);
+/**
+ * Replace the value at the given index with a new value. The index must be
+ * valid. Returns a pointer to the inserted value.
+ */
+const char *strvec_replace(struct strvec *array, size_t idx, const char *replacement);
+
+/*
+ * Remove the value at the given index. The remainder of the array will be
+ * moved to fill the resulting gap. The provided index must point into the
+ * array.
+ */
+void strvec_remove(struct strvec *array, size_t idx);
+
/**
* Remove the final element from the array. If there are no
* elements in the array, do nothing.
diff --git a/t/unit-tests/t-strvec.c b/t/unit-tests/t-strvec.c
new file mode 100644
index 0000000000..c07ad62c7d
--- /dev/null
+++ b/t/unit-tests/t-strvec.c
@@ -0,0 +1,259 @@
+#include "test-lib.h"
+#include "strbuf.h"
+#include "strvec.h"
+
+#define check_strvec(vec, ...) \
+ check_strvec_loc(TEST_LOCATION(), vec, __VA_ARGS__)
+static void check_strvec_loc(const char *loc, struct strvec *vec, ...)
+{
+ va_list ap;
+ size_t nr = 0;
+
+ va_start(ap, vec);
+ while (1) {
+ const char *str = va_arg(ap, const char *);
+ if (!str)
+ break;
+
+ if (!check_uint(vec->nr, >, nr) ||
+ !check_uint(vec->alloc, >, nr) ||
+ !check_str(vec->v[nr], str)) {
+ struct strbuf msg = STRBUF_INIT;
+ strbuf_addf(&msg, "strvec index %"PRIuMAX, (uintmax_t) nr);
+ test_assert(loc, msg.buf, 0);
+ strbuf_release(&msg);
+ return;
+ }
+
+ nr++;
+ }
+
+ check_uint(vec->nr, ==, nr);
+ check_uint(vec->alloc, >=, nr);
+ check_pointer_eq(vec->v[nr], NULL);
+}
+
+static void t_static_init(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ check_pointer_eq(vec.v, empty_strvec);
+ check_uint(vec.nr, ==, 0);
+ check_uint(vec.alloc, ==, 0);
+}
+
+static void t_dynamic_init(void)
+{
+ struct strvec vec;
+ strvec_init(&vec);
+ check_pointer_eq(vec.v, empty_strvec);
+ check_uint(vec.nr, ==, 0);
+ check_uint(vec.alloc, ==, 0);
+}
+
+static void t_clear(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_push(&vec, "foo");
+ strvec_clear(&vec);
+ check_pointer_eq(vec.v, empty_strvec);
+ check_uint(vec.nr, ==, 0);
+ check_uint(vec.alloc, ==, 0);
+}
+
+static void t_push(void)
+{
+ struct strvec vec = STRVEC_INIT;
+
+ strvec_push(&vec, "foo");
+ check_strvec(&vec, "foo", NULL);
+
+ strvec_push(&vec, "bar");
+ check_strvec(&vec, "foo", "bar", NULL);
+
+ strvec_clear(&vec);
+}
+
+static void t_pushf(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushf(&vec, "foo: %d", 1);
+ check_strvec(&vec, "foo: 1", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_pushl(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ check_strvec(&vec, "foo", "bar", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_pushv(void)
+{
+ const char *strings[] = {
+ "foo", "bar", "baz", NULL,
+ };
+ struct strvec vec = STRVEC_INIT;
+
+ strvec_pushv(&vec, strings);
+ check_strvec(&vec, "foo", "bar", "baz", NULL);
+
+ strvec_clear(&vec);
+}
+
+static void t_replace_at_head(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_replace(&vec, 0, "replaced");
+ check_strvec(&vec, "replaced", "bar", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_replace_at_tail(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_replace(&vec, 2, "replaced");
+ check_strvec(&vec, "foo", "bar", "replaced", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_replace_in_between(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_replace(&vec, 1, "replaced");
+ check_strvec(&vec, "foo", "replaced", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_remove_at_head(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_remove(&vec, 0);
+ check_strvec(&vec, "bar", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_remove_at_tail(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_remove(&vec, 2);
+ check_strvec(&vec, "foo", "bar", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_remove_in_between(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_remove(&vec, 1);
+ check_strvec(&vec, "foo", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_pop_empty_array(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pop(&vec);
+ check_strvec(&vec, NULL);
+ strvec_clear(&vec);
+}
+
+static void t_pop_non_empty_array(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_pushl(&vec, "foo", "bar", "baz", NULL);
+ strvec_pop(&vec);
+ check_strvec(&vec, "foo", "bar", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_split_empty_string(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_split(&vec, "");
+ check_strvec(&vec, NULL);
+ strvec_clear(&vec);
+}
+
+static void t_split_single_item(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_split(&vec, "foo");
+ check_strvec(&vec, "foo", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_split_multiple_items(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_split(&vec, "foo bar baz");
+ check_strvec(&vec, "foo", "bar", "baz", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_split_whitespace_only(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_split(&vec, " \t\n");
+ check_strvec(&vec, NULL);
+ strvec_clear(&vec);
+}
+
+static void t_split_multiple_consecutive_whitespaces(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ strvec_split(&vec, "foo\n\t bar");
+ check_strvec(&vec, "foo", "bar", NULL);
+ strvec_clear(&vec);
+}
+
+static void t_detach(void)
+{
+ struct strvec vec = STRVEC_INIT;
+ const char **detached;
+
+ strvec_push(&vec, "foo");
+
+ detached = strvec_detach(&vec);
+ check_str(detached[0], "foo");
+ check_pointer_eq(detached[1], NULL);
+
+ check_pointer_eq(vec.v, empty_strvec);
+ check_uint(vec.nr, ==, 0);
+ check_uint(vec.alloc, ==, 0);
+
+ free((char *) detached[0]);
+ free(detached);
+}
+
+int cmd_main(int argc, const char **argv)
+{
+ TEST(t_static_init(), "static initialization");
+ TEST(t_dynamic_init(), "dynamic initialization");
+ TEST(t_clear(), "clear");
+ TEST(t_push(), "push");
+ TEST(t_pushf(), "pushf");
+ TEST(t_pushl(), "pushl");
+ TEST(t_pushv(), "pushv");
+ TEST(t_replace_at_head(), "replace at head");
+ TEST(t_replace_in_between(), "replace in between");
+ TEST(t_replace_at_tail(), "replace at tail");
+ TEST(t_remove_at_head(), "remove at head");
+ TEST(t_remove_in_between(), "remove in between");
+ TEST(t_remove_at_tail(), "remove at tail");
+ TEST(t_pop_empty_array(), "pop with empty array");
+ TEST(t_pop_non_empty_array(), "pop with non-empty array");
+ TEST(t_split_empty_string(), "split empty string");
+ TEST(t_split_single_item(), "split single item");
+ TEST(t_split_multiple_items(), "split multiple items");
+ TEST(t_split_whitespace_only(), "split whitespace only");
+ TEST(t_split_multiple_consecutive_whitespaces(), "split multiple consecutive whitespaces");
+ TEST(t_detach(), "detach");
+ return test_done();
+}
diff --git a/t/unit-tests/test-lib.c b/t/unit-tests/test-lib.c
index 66d6980ffb..3c513ce59a 100644
--- a/t/unit-tests/test-lib.c
+++ b/t/unit-tests/test-lib.c
@@ -318,6 +318,19 @@ int check_bool_loc(const char *loc, const char *check, int ok)
union test__tmp test__tmp[2];
+int check_pointer_eq_loc(const char *loc, const char *check, int ok,
+ const void *a, const void *b)
+{
+ int ret = test_assert(loc, check, ok);
+
+ if (!ret) {
+ test_msg(" left: %p", a);
+ test_msg(" right: %p", b);
+ }
+
+ return ret;
+}
+
int check_int_loc(const char *loc, const char *check, int ok,
intmax_t a, intmax_t b)
{
diff --git a/t/unit-tests/test-lib.h b/t/unit-tests/test-lib.h
index a8f07ae0b7..2de6d715d5 100644
--- a/t/unit-tests/test-lib.h
+++ b/t/unit-tests/test-lib.h
@@ -75,6 +75,18 @@ int test_assert(const char *location, const char *check, int ok);
check_bool_loc(TEST_LOCATION(), #x, x)
int check_bool_loc(const char *loc, const char *check, int ok);
+/*
+ * Compare two integers. Prints a message with the two values if the
+ * comparison fails. NB this is not thread safe.
+ */
+#define check_pointer_eq(a, b) \
+ (test__tmp[0].p = (a), test__tmp[1].p = (b), \
+ check_pointer_eq_loc(TEST_LOCATION(), #a" == "#b, \
+ test__tmp[0].p == test__tmp[1].p, \
+ test__tmp[0].p, test__tmp[1].p))
+int check_pointer_eq_loc(const char *loc, const char *check, int ok,
+ const void *a, const void *b);
+
/*
* Compare two integers. Prints a message with the two values if the
* comparison fails. NB this is not thread safe.
@@ -136,6 +148,7 @@ union test__tmp {
intmax_t i;
uintmax_t u;
char c;
+ const void *p;
};
extern union test__tmp test__tmp[2];
--
2.45.1.216.g4365c6fcf9.dirty
Attachment:
signature.asc
Description: PGP signature
