From: Remi Tricot-Le Breton <rlebreton@haproxy.com>
Date: Wed, 23 Dec 2020 17:13:48 +0000 (+0100)
Subject: MINOR: http: Add helper functions to trim spaces and tabs
X-Git-Tag: v2.4-dev5~47
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=56e46cb393a5d39081e8e26fbb765cf7592736be;p=thirdparty%2Fhaproxy.git

MINOR: http: Add helper functions to trim spaces and tabs

Add two helper functions that trim leading or trailing spaces and
horizontal tabs from an ist string.
---

diff --git a/include/haproxy/http.h b/include/haproxy/http.h
index fb47abdd45..582a666471 100644
--- a/include/haproxy/http.h
+++ b/include/haproxy/http.h
@@ -59,6 +59,9 @@ int http_parse_status_val(const struct ist value, struct ist *status, struct ist
 
 int http_compare_etags(struct ist etag1, struct ist etag2);
 
+struct ist http_trim_leading_spht(struct ist value);
+struct ist http_trim_trailing_spht(struct ist value);
+
 /*
  * Given a path string and its length, find the position of beginning of the
  * query string. Returns NULL if no query string is found in the path.
diff --git a/src/http.c b/src/http.c
index 22a5a14181..d331699568 100644
--- a/src/http.c
+++ b/src/http.c
@@ -1074,3 +1074,34 @@ int http_compare_etags(struct ist etag1, struct ist etag2)
 
 	return isteq(etag1, etag2);
 }
+
+
+/*
+ * Trim leading space or horizontal tab characters from <value> string.
+ * Returns the trimmed string.
+ */
+struct ist http_trim_leading_spht(struct ist value)
+{
+	struct ist ret = value;
+
+	while (ret.len && HTTP_IS_SPHT(ret.ptr[0])) {
+		++ret.ptr;
+		--ret.len;
+	}
+
+	return ret;
+}
+
+/*
+ * Trim trailing space or horizontal tab characters from <value> string.
+ * Returns the trimmed string.
+ */
+struct ist http_trim_trailing_spht(struct ist value)
+{
+	struct ist ret = value;
+
+	while (ret.len && HTTP_IS_SPHT(ret.ptr[-1]))
+		--ret.len;
+
+	return ret;
+}