Add a config_lines_partition() function to help with LINELIST_V.

This function works a little bit like strsep(), to get a chunk of
configuration lines with a given header.  We can use this to make
hidden service config easier to parse.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/test/test_util.c b/src/test/test_util.c
index fecd279096..234ae06745 100644
--- a/src/test/test_util.c
+++ b/src/test/test_util.c
@@ -1850,6 +1850,56 @@ test_util_config_line_crlf(void *arg)
   tor_free(k); tor_free(v);
 }
 
+static void
+test_util_config_line_partition(void *arg)
+{
+  (void)arg;
+  config_line_t *lines = NULL, *orig, *rest = NULL;
+
+  config_line_append(&lines, "Header", "X");
+  config_line_append(&lines, "Item", "Y");
+  config_line_append(&lines, "Thing", "Z");
+
+  config_line_append(&lines, "HEADER", "X2");
+
+  config_line_append(&lines, "header", "X3");
+  config_line_append(&lines, "Item3", "Foob");
+
+  /* set up h2 and h3 to point to the places where we hope the headers will
+     be. */
+  config_line_t *h2 = lines->next->next->next;
+  config_line_t *h3 = h2->next;
+  tt_str_op(h2->key, OP_EQ, "HEADER");
+  tt_str_op(h3->key, OP_EQ, "header");
+
+  orig = lines;
+  rest = config_lines_partition(lines, "Header");
+  tt_ptr_op(lines, OP_EQ, orig);
+  tt_ptr_op(rest, OP_EQ, h2);
+  tt_str_op(lines->next->key, OP_EQ, "Item");
+  tt_str_op(lines->next->next->key, OP_EQ, "Thing");
+  tt_ptr_op(lines->next->next->next, OP_EQ, NULL);
+  config_free_lines(lines);
+
+  orig = lines = rest;
+  rest = config_lines_partition(lines, "Header");
+  tt_ptr_op(lines, OP_EQ, orig);
+  tt_ptr_op(rest, OP_EQ, h3);
+  tt_ptr_op(lines->next, OP_EQ, NULL);
+  config_free_lines(lines);
+
+  orig = lines = rest;
+  rest = config_lines_partition(lines, "Header");
+  tt_ptr_op(lines, OP_EQ, orig);
+  tt_ptr_op(rest, OP_EQ, NULL);
+  tt_str_op(lines->next->key, OP_EQ, "Item3");
+  tt_ptr_op(lines->next->next, OP_EQ, NULL);
+
+ done:
+  config_free_lines(lines);
+  config_free_lines(rest);
+}
+
 #ifndef DISABLE_PWDB_TESTS
 static void
 test_util_expand_filename(void *arg)
@@ -6379,6 +6429,7 @@ struct testcase_t util_tests[] = {
   UTIL_LEGACY(config_line_comment_character),
   UTIL_LEGACY(config_line_escaped_content),
   UTIL_LEGACY(config_line_crlf),
+  UTIL_TEST(config_line_partition, 0),
   UTIL_TEST_PWDB(expand_filename, 0),
   UTIL_LEGACY(escape_string_socks),
   UTIL_LEGACY(string_is_key_value),