Add util to return the command as a string

We had print_command for logging to a file

3 files changed, 27 insertions, 0 deletions

diff --git a/src/ccache.h b/src/ccache.h
index 973d42dd..ace546f5 100644
--- a/src/ccache.h
+++ b/src/ccache.h
@@ -243,6 +243,7 @@ void wipe_all(struct conf *conf);
 int execute(char **argv, int fd_out, int fd_err, pid_t *pid);
 char *find_executable(const char *name, const char *exclude_name);
 void print_command(FILE *fp, char **argv);
+char *string_command(char **argv);
 
 // ----------------------------------------------------------------------------
 // lockfile.c
diff --git a/src/execute.c b/src/execute.c
index 8c4849a9..4589a477 100644
--- a/src/execute.c
+++ b/src/execute.c
@@ -348,3 +348,21 @@ print_command(FILE *fp, char **argv)
 	}
 	fprintf(fp, "\n");
 }
+
+char *
+string_command(char **argv)
+{
+	size_t len = 0;
+	for (int i = 0; argv[i]; i++) {
+		len += (i == 0) ? 0 : 1;
+		len += strlen(argv[i]);
+	}
+	len += 1;
+	char *buf = x_calloc(1, len + 1);
+	for (int i = 0; argv[i]; i++) {
+		strcat(buf, (i == 0) ? "" : " ");
+		strcat(buf, argv[i]);
+	}
+	strcat(buf, "\n");
+	return buf;
+}
diff --git a/unittest/test_util.c b/unittest/test_util.c
index 38b44191..4fed42cc 100644
--- a/unittest/test_util.c
+++ b/unittest/test_util.c
@@ -199,4 +199,12 @@ TEST(parse_size_with_suffix)
 	}
 }
 
+TEST(string_command)
+{
+	char *argv[] = {"foo", "bar", NULL};
+
+	CHECK_STR_EQ_FREE2("foo bar\n", string_command(argv));
+
+}
+
 TEST_SUITE_END