From f5a0093a881603269bb24aca976374ddc7725bec Mon Sep 17 00:00:00 2001
From: John Mark Bell <jmb@netsurf-browser.org>
Date: Mon, 5 Apr 2004 21:54:22 +0000
Subject: [project @ 2004-04-05 21:54:22 by jmb] Implement outstanding
 functionality

svn path=/import/netsurf/; revision=722
---
 riscos/save_complete.c | 164 ++++++++++++++++++++++++++++++++++---------------
 1 file changed, 113 insertions(+), 51 deletions(-)

(limited to 'riscos')

diff --git a/riscos/save_complete.c b/riscos/save_complete.c
index ac2df75a4..1bc47221f 100644
--- a/riscos/save_complete.c
+++ b/riscos/save_complete.c
@@ -29,11 +29,6 @@
 
 #ifdef WITH_SAVE_COMPLETE
 
-/** \todo URL rewriting for @import rules
- *        Objects used by embedded html pages
- *        GUI
- */
-
 regex_t save_complete_import_re;
 
 /** An entry in save_complete_list. */
@@ -42,18 +37,17 @@ struct save_complete_entry {
         int ptr;    /**< Pointer to object's location in memory */
         struct save_complete_entry *next; /**< Next entry in list */
 };
-/** List of urls seen and saved so far. */
-static struct save_complete_entry *save_complete_list;
-
 
-static void save_imported_sheets(struct content *c, const char *path);
-static char * rewrite_stylesheet_urls(const char *source, unsigned int size,
+static void save_complete_internal(struct content *c, const char *path,
+                bool index);
+static void save_imported_sheets(struct save_complete_entry **save_complete_list, struct content *c, const char *path);
+static char * rewrite_stylesheet_urls(struct save_complete_entry *save_complete_list, const char *source, unsigned int size,
 		int *osize, const char *base);
-static int rewrite_document_urls(xmlDoc *doc, const char *base);
-static int rewrite_urls(xmlNode *n, const char *base);
-static void rewrite_url(xmlNode *n, const char *attr, const char *base);
-static void save_complete_add_url(const char *url, int id);
-static int save_complete_find_url(const char *url);
+static int rewrite_document_urls(struct save_complete_entry *save_complete_list, xmlDoc *doc, const char *base);
+static int rewrite_urls(struct save_complete_entry *save_complete_list, xmlNode *n, const char *base);
+static void rewrite_url(struct save_complete_entry *save_complete_list, xmlNode *n, const char *attr, const char *base);
+static void save_complete_add_url(struct save_complete_entry **save_complete_list, const char *url, int id);
+static int save_complete_find_url(struct save_complete_entry *save_complete_list, const char *url);
 
 
 /**
@@ -64,18 +58,34 @@ static int save_complete_find_url(const char *url);
  */
 
 void save_complete(struct content *c, const char *path)
+{
+        save_complete_internal(c, path, true);
+}
+
+/**
+ * Save an HTML page with all dependencies, recursing through imported pages.
+ *
+ * \param  save_complete_list head of list of URLs
+ * \param  c     CONTENT_HTML to save
+ * \param  path  directory to save to (must exist)
+ */
+
+void save_complete_internal(struct content *c, const char *path, bool index)
 {
 	char spath[256];
 	unsigned int i;
 	htmlParserCtxtPtr toSave;
+	/** List of urls seen and saved so far. One per HTML document */
+        struct save_complete_entry *save_complete_list;
+
 
 	if (c->type != CONTENT_HTML)
 		return;
 
 	save_complete_list = 0;
 
-        /* save stylesheets, ignoring the base sheet and <style> elements */
-        for (i = 2; i != c->data.html.stylesheet_count; i++) {
+        /* save stylesheets, ignoring the base sheet */
+        for (i = 1; i != c->data.html.stylesheet_count; i++) {
 		struct content *css = c->data.html.stylesheet_content[i];
 		char *source;
 		int source_len;
@@ -83,13 +93,16 @@ void save_complete(struct content *c, const char *path)
                 if (!css)
                         continue;
 
-		save_complete_add_url(css->url, (int) css);
+		save_complete_add_url(&save_complete_list, css->url, (int) css);
+
+                save_imported_sheets(&save_complete_list, css, path);
 
-                save_imported_sheets(css, path);
+                if (i == 1) continue; /* don't save <style> elements */
 
 		snprintf(spath, sizeof spath, "%s.%x", path,
 				(unsigned int) css);
-		source = rewrite_stylesheet_urls(css->source_data,
+		source = rewrite_stylesheet_urls(save_complete_list,
+		                css->source_data,
 				css->source_size, &source_len, css->url);
 		if (source) {
 			xosfile_save_stamped(spath, 0xf79, source,
@@ -106,14 +119,19 @@ void save_complete(struct content *c, const char *path)
 		if (!obj || obj->type >= CONTENT_OTHER || !obj->source_data)
 			continue;
 
-		save_complete_add_url(obj->url, (int) obj);
+		save_complete_add_url(&save_complete_list, obj->url, (int) obj);
 
-		snprintf(spath, sizeof spath, "%s.%x", path,
-				(unsigned int) obj);
-		xosfile_save_stamped(spath,
-				ro_content_filetype(obj),
-				obj->source_data,
-				obj->source_data + obj->source_size);
+                if (obj->type == CONTENT_HTML) {
+                        save_complete_internal(obj, path, false);
+                }
+                else {
+		        snprintf(spath, sizeof spath, "%s.%x", path,
+			        (unsigned int) obj);
+		        xosfile_save_stamped(spath,
+			        	ro_content_filetype(obj),
+				        obj->source_data,
+				        obj->source_data + obj->source_size);
+		}
 	}
 
 	/* make a copy of the document tree */
@@ -121,7 +139,7 @@ void save_complete(struct content *c, const char *path)
 	htmlParseDocument(toSave);
 
 	/* rewrite all urls we know about */
-       	if (rewrite_document_urls(toSave->myDoc, c->data.html.base_url) == 0) {
+       	if (rewrite_document_urls(save_complete_list, toSave->myDoc, c->data.html.base_url) == 0) {
        	        xfree(spath);
        	        xmlFreeDoc(toSave->myDoc);
        	        htmlFreeParserCtxt(toSave);
@@ -129,7 +147,10 @@ void save_complete(struct content *c, const char *path)
        	}
 
 	/* save the html file out last of all */
-	snprintf(spath, sizeof spath, "%s.index", path);
+	if (index)
+        	snprintf(spath, sizeof spath, "%s.index", path);
+        else
+                snprintf(spath, sizeof spath, "%s.%x", path, (unsigned int)c);
 	htmlSaveFile(spath, toSave->myDoc);
 	xosfile_set_type(spath, 0xfaf);
 
@@ -145,8 +166,15 @@ void save_complete(struct content *c, const char *path)
 	}
 }
 
-
-void save_imported_sheets(struct content *c, const char *path)
+/**
+ * Save all imported stylesheets
+ *
+ * \param  save_complete_list head of list of URLs
+ * \param  c The content containing the stylesheet
+ * \param path Path to save to
+ */
+void save_imported_sheets(struct save_complete_entry **save_complete_list,
+                          struct content *c, const char *path)
 {
 	char spath[256];
         unsigned int j;
@@ -159,13 +187,14 @@ void save_imported_sheets(struct content *c, const char *path)
                 if (!css)
                         continue;
 
-		save_complete_add_url(css->url, (int) css);
+		save_complete_add_url(save_complete_list, css->url, (int) css);
 
-                save_imported_sheets(css, path);
+                save_imported_sheets(save_complete_list, css, path);
 
 		snprintf(spath, sizeof spath, "%s.%x", path,
 				(unsigned int) css);
-		source = rewrite_stylesheet_urls(css->source_data,
+		source = rewrite_stylesheet_urls(*save_complete_list,
+		                css->source_data,
 				css->source_size, &source_len, css->url);
 		if (source) {
 			xosfile_save_stamped(spath, 0xf79, source,
@@ -216,15 +245,15 @@ void save_complete_init(void)
 /**
  * Rewrite stylesheet @import rules for save complete.
  *
+ * \param  save_complete_list head of list of URLs
  * @param  source  stylesheet source
  * @param  size    size of source
  * @param  osize   updated with the size of the result
- * @param  head    pointer to the head of the list containing imported urls
  * @param  base    url of stylesheet
  * @return  converted source, or 0 on error
  */
 
-char * rewrite_stylesheet_urls(const char *source, unsigned int size,
+char * rewrite_stylesheet_urls(struct save_complete_entry *save_complete_list, const char *source, unsigned int size,
 		int *osize, const char *base)
 {
 	char *res;
@@ -310,7 +339,7 @@ char * rewrite_stylesheet_urls(const char *source, unsigned int size,
 		memcpy(res + *osize, source + offset, match[0].rm_so);
 		*osize += match[0].rm_so;
 
-		id = save_complete_find_url(url);
+		id = save_complete_find_url(save_complete_list, url);
 		if (id) {
 			/* replace import */
 			sprintf(buf, "@import '%x'", id);
@@ -340,12 +369,14 @@ char * rewrite_stylesheet_urls(const char *source, unsigned int size,
 /**
  * Rewrite URLs in a HTML document to be relative
  *
+ * \param  save_complete_list head of list of URLs
  * @param doc The root of the document tree
  * @return 0 on error. >0 otherwise
  * \param  base  base url of document
  */
 
-int rewrite_document_urls(xmlDoc *doc, const char *base)
+int rewrite_document_urls(struct save_complete_entry *save_complete_list,
+                          xmlDoc *doc, const char *base)
 {
         xmlNode *html;
 
@@ -358,7 +389,7 @@ int rewrite_document_urls(xmlDoc *doc, const char *base)
                 return 0;
         }
 
-	rewrite_urls(html, base);
+	rewrite_urls(save_complete_list, html, base);
 
         return 1;
 }
@@ -367,12 +398,14 @@ int rewrite_document_urls(xmlDoc *doc, const char *base)
 /**
  * Traverse tree, rewriting URLs as we go.
  *
+ * \param  save_complete_list head of list of URLs
+ * \param  base  base url of document
  * @param n The root of the tree
  * @return 0 on error. >0 otherwise
- * \param  base  base url of document
  */
 
-int rewrite_urls(xmlNode *n, const char *base)
+int rewrite_urls(struct save_complete_entry *save_complete_list, xmlNode *n,
+                 const char *base)
 {
         xmlNode *this;
 
@@ -384,18 +417,19 @@ int rewrite_urls(xmlNode *n, const char *base)
          * 1)   data         <object>
          * 2)   href         <a> <area> <link> <base>
          * 3)   src          <script> <input> <frame> <iframe> <img>
+         * 4)   n/a          <style>
          */
         if (n->type == XML_ELEMENT_NODE) {
                 /* 1 */
                 if (strcmp(n->name, "object") == 0) {
-                      rewrite_url(n, "data", base);
+                      rewrite_url(save_complete_list, n, "data", base);
                 }
                 /* 2 */
                 else if (strcmp(n->name, "a") == 0 ||
                          strcmp(n->name, "area") == 0 ||
                          strcmp(n->name, "link") == 0 ||
                          strcmp(n->name, "base") == 0) {
-                      rewrite_url(n, "href", base);
+                      rewrite_url(save_complete_list, n, "href", base);
                 }
                 /* 3 */
                 else if (strcmp(n->name, "frame") == 0 ||
@@ -403,7 +437,29 @@ int rewrite_urls(xmlNode *n, const char *base)
                          strcmp(n->name, "input") == 0 ||
                          strcmp(n->name, "img") == 0 ||
                          strcmp(n->name, "script") == 0) {
-                      rewrite_url(n, "src", base);
+                      rewrite_url(save_complete_list, n, "src", base);
+                }
+                /* 4 */
+                else if (strcmp(n->name, "style") == 0) {
+                        unsigned int len;
+                        /* Get current content */
+                        xmlChar *content = xmlNodeGetContent(n);
+                        if (!content) return 0;
+
+                        /* Rewrite @import rules */
+                        char *rewritten = rewrite_stylesheet_urls(
+                                                  save_complete_list,
+		                                  content,
+		                                  strlen((char*)content),
+		                                  &len, base);
+                        if (!rewritten) return 0;
+
+                        /* set new content */
+                        xmlNodeSetContentLen(n, (const xmlChar*)rewritten,
+                                             len);
+                        /* free old content */
+                        xmlFree(content);
+                        return 1;
                 }
         }
         else {
@@ -412,7 +468,7 @@ int rewrite_urls(xmlNode *n, const char *base)
 
         /* now recurse */
 	for (this = n->children; this != 0; this = this->next) {
-                rewrite_urls(this, base);
+                rewrite_urls(save_complete_list, this, base);
 	}
 
         return 1;
@@ -422,12 +478,14 @@ int rewrite_urls(xmlNode *n, const char *base)
 /**
  * Rewrite an URL in a HTML document.
  *
+ * \param  save_complete_list head of list of URLs
  * \param  n     The node to modify
  * \param  attr  The html attribute to modify
  * \param  base  base url of document
  */
 
-void rewrite_url(xmlNode *n, const char *attr, const char *base)
+void rewrite_url(struct save_complete_entry *save_complete_list, xmlNode *n,
+                 const char *attr, const char *base)
 {
         char *url, *data;
         char rel[256];
@@ -443,7 +501,7 @@ void rewrite_url(xmlNode *n, const char *attr, const char *base)
                 return;
         }
 
-	id = save_complete_find_url(url);
+	id = save_complete_find_url(save_complete_list, url);
 	if (id) {
 		/* found a match */
 		snprintf(rel, sizeof rel, "%x", id);
@@ -461,11 +519,13 @@ void rewrite_url(xmlNode *n, const char *attr, const char *base)
 /**
  * Add a url to the save_complete_list.
  *
+ * \param  save_complete_list head of list of URLs
  * \param  url  url to add (copied)
  * \param  id   id to use for url
  */
 
-void save_complete_add_url(const char *url, int id)
+void save_complete_add_url(struct save_complete_entry **save_complete_list,
+                           const char *url, int id)
 {
 	struct save_complete_entry *entry;
 	entry = malloc(sizeof (*entry));
@@ -477,20 +537,22 @@ void save_complete_add_url(const char *url, int id)
 		return;
 	}
 	entry->ptr = id;
-	entry->next = save_complete_list;
-	save_complete_list = entry;
+	entry->next = *save_complete_list;
+	*save_complete_list = entry;
 }
 
 
 /**
  * Look up a url in the save_complete_list.
  *
+ * \param  save_complete_list head of list of URLs
  * \param  url   url to find
  * \param  len   length of url
  * \return  id to use for url, or 0 if not present
  */
 
-int save_complete_find_url(const char *url)
+int save_complete_find_url(struct save_complete_entry *save_complete_list,
+                           const char *url)
 {
 	struct save_complete_entry *entry;
 	for (entry = save_complete_list; entry; entry = entry->next)
-- 
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