MINOR: http: Add standalone functions to parse a start-line or a header
These 2 functions are pretty naive. They only split a start-line into its 3
substrings or a header line into its name and value. Spaces before and after
each part are skipped. No CRLF at the end are expected.
diff --git a/src/http.c b/src/http.c
index 30d349a..8e5f4c8 100644
--- a/src/http.c
+++ b/src/http.c
@@ -906,6 +906,72 @@
return 1;
}
+/* Parses a single header line (without the CRLF) and splits it into its name
+ * and its value. The parsing is pretty naive and just skip spaces.
+ */
+int http_parse_header(const struct ist hdr, struct ist *name, struct ist *value)
+{
+ char *p = hdr.ptr;
+ char *end = p + hdr.len;
+
+ name->len = value->len = 0;
+
+ /* Skip leading spaces */
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+
+ /* Set the header name */
+ name->ptr = p;
+ for (; p < end && HTTP_IS_TOKEN(*p); p++);
+ name->len = p - name->ptr;
+
+ /* Skip the ':' and spaces before and after it */
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+ if (p < end && *p == ':') p++;
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+
+ /* Set the header value */
+ value->ptr = p;
+ value->len = end - p;
+
+ return 1;
+}
+
+/* Parses a single start line (without the CRLF) and splits it into 3 parts. The
+ * parsing is pretty naive and just skip spaces.
+ */
+int http_parse_stline(const struct ist line, struct ist *p1, struct ist *p2, struct ist *p3)
+{
+ char *p = line.ptr;
+ char *end = p + line.len;
+
+ p1->len = p2->len = p3->len = 0;
+
+ /* Skip leading spaces */
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+
+ /* Set the first part */
+ p1->ptr = p;
+ for (; p < end && HTTP_IS_TOKEN(*p); p++);
+ p1->len = p - p1->ptr;
+
+ /* Skip spaces between p1 and p2 */
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+
+ /* Set the second part */
+ p2->ptr = p;
+ for (; p < end && !HTTP_IS_SPHT(*p); p++);
+ p2->len = p - p2->ptr;
+
+ /* Skip spaces between p2 and p3 */
+ for (; p < end && HTTP_IS_SPHT(*p); p++);
+
+ /* The remaing is the third value */
+ p3->ptr = p;
+ p3->len = end - p;
+
+ return 1;
+}
+
/* post-initializes the HTTP parts. Returns non-zero on error, with <err>
* pointing to the error message.