From d601aa71887b45b4fbd1c1c86f5cfe2971100216 Mon Sep 17 00:00:00 2001
From: John Mark Bell <jmb@netsurf-browser.org>
Date: Fri, 30 Jul 2004 21:53:52 +0000
Subject: [project @ 2004-07-30 21:53:52 by jmb] Implement some CSS3 attribute
 selectors

svn path=/import/netsurf/; revision=1167
---
 css/css.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)

(limited to 'css/css.c')

diff --git a/css/css.c b/css/css.c
index 9287096f3..6ff243b18 100644
--- a/css/css.c
+++ b/css/css.c
@@ -870,6 +870,69 @@ bool css_match_detail(const struct css_selector *detail,
 				match = true;
 			break;
 
+		case CSS_SELECTOR_ATTRIB_PRE:
+			/* matches if the attribute begins with a certain
+			 * value (CSS3) */
+			word = strndup(detail->data, detail->data_length);
+			if (!word) {
+				/** \todo report to user */
+				return false;
+			}
+			s = (char *)xmlGetProp(element,
+					(const xmlChar *) word);
+			free(word);
+			if (s && strncasecmp(detail->data2, s,
+					detail->data2_length) == 0)
+				match = true;
+			break;
+
+		case CSS_SELECTOR_ATTRIB_SUF:
+			/* matches if the attribute ends with a certain
+			 * value (CSS3) */
+			word = strndup(detail->data, detail->data_length);
+			if (!word) {
+				/** \todo report to user */
+				return false;
+			}
+			s = (char *)xmlGetProp(element,
+					(const xmlChar *) word);
+			free(word);
+			if (!s)
+				break;
+			word = s + (strlen(s) - detail->data2_length);
+			if (s && strncasecmp(detail->data2, word,
+					detail->data2_length) == 0)
+				match = true;
+			break;
+
+		case CSS_SELECTOR_ATTRIB_SUB:
+			/* matches if the attribute contains a certain
+			 * value (CSS3) */
+			word = strndup(detail->data, detail->data_length);
+			if (!word) {
+				/** \todo report to user */
+				return false;
+			}
+			s = (char *)xmlGetProp(element,
+					(const xmlChar *) word);
+			free(word);
+			if (!s)
+				break;
+			/* case insensitive strstr follows */
+			/* space -> last possible start position */
+			/* word -> start of string to search */
+			space = s + (strlen(s) - detail->data2_length);
+			word = s;
+			while (word <= space) {
+				if (strncasecmp(detail->data2, word,
+						detail->data2_length) == 0) {
+					match = true;
+					break;
+				}
+				word++;
+			}
+			break;
+
 		case CSS_SELECTOR_PSEUDO:
 			break;
 
@@ -1336,6 +1399,21 @@ void css_dump_selector(const struct css_selector *r)
 						m->data_length, m->data,
 						m->data2_length, m->data2);
 				break;
+			case CSS_SELECTOR_ATTRIB_PRE:
+				fprintf(stderr, "[%.*s^=%.*s]",
+						m->data_length, m->data,
+						m->data2_length, m->data2);
+				break;
+			case CSS_SELECTOR_ATTRIB_SUF:
+				fprintf(stderr, "[%.*s$=%.*s]",
+						m->data_length, m->data,
+						m->data2_length, m->data2);
+				break;
+			case CSS_SELECTOR_ATTRIB_SUB:
+				fprintf(stderr, "[%.*s*=%.*s]",
+						m->data_length, m->data,
+						m->data2_length, m->data2);
+				break;
 			case CSS_SELECTOR_PSEUDO:
 				fprintf(stderr, ":%.*s",
 						m->data_length, m->data);
-- 
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