From 8b479ca229665d26a2f192289388c12a5f749a24 Mon Sep 17 00:00:00 2001
From: liquidaty <info@liquidaty.com>
Date: Fri, 7 Jul 2023 15:06:19 +0200
Subject: Add --strip-comments option

---
 Makefile.am       |  3 ++-
 src/jv.h          |  1 +
 src/jv_parse.c    |  7 +------
 src/main.c        |  5 +++++
 tests/commenttest | 15 +++++++++++++++
 5 files changed, 24 insertions(+), 7 deletions(-)
 create mode 100755 tests/commenttest

diff --git a/Makefile.am b/Makefile.am
index f9594a56..4d081128 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -141,7 +141,7 @@ endif
 
 ### Tests (make check)
 
-TESTS = tests/mantest tests/jqtest tests/shtest tests/utf8test tests/base64test
+TESTS = tests/mantest tests/jqtest tests/shtest tests/utf8test tests/base64test tests/commenttest
 if !WIN32
 TESTS += tests/optionaltest
 endif
@@ -233,6 +233,7 @@ EXTRA_DIST = $(DOC_FILES) $(man_MANS) $(TESTS) $(TEST_LOG_COMPILER)     \
         tests/setup tests/torture/input0.json                           \
         tests/optional.test tests/man.test tests/manonig.test           \
         tests/jq.test tests/onig.test tests/base64.test                 \
+        tests/commenttest                                               \
         tests/utf8-truncate.jq tests/jq-f-test.sh                       \
         tests/no-main-program.jq tests/yes-main-program.jq
 
diff --git a/src/jv.h b/src/jv.h
index 083509ec..cf9b8401 100644
--- a/src/jv.h
+++ b/src/jv.h
@@ -234,6 +234,7 @@ enum {
   JV_PARSE_SEQ              = 1,
   JV_PARSE_STREAMING        = 2,
   JV_PARSE_STREAM_ERRORS    = 4,
+  JV_PARSE_STRIP_COMMENTS   = 8
 };
 
 jv jv_parse(const char* string);
diff --git a/src/jv_parse.c b/src/jv_parse.c
index 64eb8ad8..2f88181f 100644
--- a/src/jv_parse.c
+++ b/src/jv_parse.c
@@ -652,7 +652,6 @@ static pfunc scan_line_comment(struct jv_parser* p, char ch, jv* out) {
   return OK;
 }
 
-
 static pfunc scan_c_comment_close(struct jv_parser* p, char ch, jv* out) {
   if(ch == '/') {
     p->scan = scan_json;
@@ -703,11 +702,7 @@ static pfunc scan_json(struct jv_parser* p, char ch, jv* out) {
   presult answer = 0;
   p->last_ch_was_ws = 0;
   if (p->st == JV_PARSER_NORMAL) {
-    if(ch == '#') {
-      p->scan = scan_line_comment;
-      return OK;
-    }
-    if(ch == '/') {
+    if(ch == '/' && (p->flags & JV_PARSE_STRIP_COMMENTS)) {
       p->scan = scan_slash_comment;
       return OK;
     }
diff --git a/src/main.c b/src/main.c
index 83233080..73338741 100644
--- a/src/main.c
+++ b/src/main.c
@@ -94,6 +94,7 @@ static void usage(int code, int keep_it_short) {
       "      --stream-errors       implies --stream and report parse error as\n"
       "                            an array;\n"
       "      --seq                 parse input/output as application/json-seq;\n"
+      "      --strip-comments      accept and strip comments from input;\n"
       "  -f, --from-file file      load filter from the file;\n"
       "  -L directory              search modules from the directory;\n"
       "      --arg name value      set $name to the string value;\n"
@@ -471,6 +472,10 @@ int main(int argc, char* argv[]) {
         parser_flags |= JV_PARSE_STREAMING;
         continue;
       }
+      if (isoption(argv[i], 0, "strip-comments", &short_opts)) {
+        parser_flags |= JV_PARSE_STRIP_COMMENTS;
+        continue;
+      }
       if (isoption(argv[i], 0, "stream-errors", &short_opts)) {
         parser_flags |= JV_PARSE_STREAMING | JV_PARSE_STREAM_ERRORS;
         continue;
diff --git a/tests/commenttest b/tests/commenttest
new file mode 100755
index 00000000..388f85ad
--- /dev/null
+++ b/tests/commenttest
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+. "${0%/*}/setup" "$@"
+
+if [ "$(echo '{"hi":"there"/*comment*/}' | $VALGRIND $Q $JQ --strip-comments '.hi')" != '"there"' ]; then
+	echo "C-style comment test failed"
+	exit 1
+fi
+
+if [ "$(printf '{"hi"://comment\n"there"}' | $VALGRIND $Q $JQ --strip-comments '.hi')" != '"there"' ]; then
+	echo "C++-style comment test failed"
+	exit 1
+fi
+
+exit 0
-- 
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