From 40db1eeb3637af933fca491dfc90c25c31e6e05e Mon Sep 17 00:00:00 2001
From: Ryan <s.covich@gmail.com>
Date: Mon, 7 May 2012 17:04:04 +0800
Subject: Improve xmllint shell

For https://bugzilla.gnome.org/show_bug.cgi?id=310222

adds namespace support to ls, du and the element named in
the command shell prompt. It also fixes du to actually dump
the requested path, if the user gives one, rather than always
dumping the whole file.
---
 debugXML.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 83 insertions(+), 2 deletions(-)

diff --git a/debugXML.c b/debugXML.c
index c26217a3..30ca6c2a 100644
--- a/debugXML.c
+++ b/debugXML.c
@@ -1724,8 +1724,11 @@ xmlLsOneNode(FILE *output, xmlNodePtr node) {
 
     switch (node->type) {
 	case XML_ELEMENT_NODE:
-	    if (node->name != NULL)
+	    if (node->name != NULL) {
+                if ((node->ns != NULL) && (node->ns->prefix != NULL))
+                    fprintf(output, "%s:", node->ns->prefix);
 		fprintf(output, "%s", (const char *) node->name);
+            }
 	    break;
 	case XML_ATTRIBUTE_NODE:
 	    if (node->name != NULL)
@@ -2696,6 +2699,8 @@ xmlShellDu(xmlShellCtxtPtr ctxt,
         } else if (node->type == XML_ELEMENT_NODE) {
             for (i = 0; i < indent; i++)
                 fprintf(ctxt->output, "  ");
+            if ((node->ns) && (node->ns->prefix))
+                fprintf(ctxt->output, "%s:", node->ns->prefix);
             fprintf(ctxt->output, "%s\n", node->name);
         } else {
         }
@@ -2837,6 +2842,10 @@ xmlShell(xmlDocPtr doc, char *filename, xmlShellReadlineFunc input,
     while (1) {
         if (ctxt->node == (xmlNodePtr) ctxt->doc)
             snprintf(prompt, sizeof(prompt), "%s > ", "/");
+        else if ((ctxt->node != NULL) && (ctxt->node->name) &&
+                 (ctxt->node->ns) && (ctxt->node->ns->prefix))
+            snprintf(prompt, sizeof(prompt), "%s:%s > ",
+                     (ctxt->node->ns->prefix), ctxt->node->name);
         else if ((ctxt->node != NULL) && (ctxt->node->name))
             snprintf(prompt, sizeof(prompt), "%s > ", ctxt->node->name);
         else
@@ -2960,7 +2969,79 @@ xmlShell(xmlDocPtr doc, char *filename, xmlShellReadlineFunc input,
             if (!xmlShellPwd(ctxt, dir, ctxt->node, NULL))
                 fprintf(ctxt->output, "%s\n", dir);
         } else if (!strcmp(command, "du")) {
-            xmlShellDu(ctxt, NULL, ctxt->node, NULL);
+            if (arg[0] == 0) {
+                xmlShellDu(ctxt, NULL, ctxt->node, NULL);
+            } else {
+                ctxt->pctxt->node = ctxt->node;
+#ifdef LIBXML_XPATH_ENABLED
+                ctxt->pctxt->node = ctxt->node;
+                list = xmlXPathEval((xmlChar *) arg, ctxt->pctxt);
+#else
+                list = NULL;
+#endif /* LIBXML_XPATH_ENABLED */
+                if (list != NULL) {
+                    switch (list->type) {
+                        case XPATH_UNDEFINED:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s: no such node\n", arg);
+                            break;
+                        case XPATH_NODESET:{
+                            int indx;
+
+                            if (list->nodesetval == NULL)
+                                break;
+
+                            for (indx = 0;
+                                 indx < list->nodesetval->nodeNr;
+                                 indx++)
+                                xmlShellDu(ctxt, NULL,
+                                           list->nodesetval->
+                                           nodeTab[indx], NULL);
+                            break;
+                        }
+                        case XPATH_BOOLEAN:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a Boolean\n", arg);
+                            break;
+                        case XPATH_NUMBER:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a number\n", arg);
+                            break;
+                        case XPATH_STRING:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a string\n", arg);
+                            break;
+                        case XPATH_POINT:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a point\n", arg);
+                            break;
+                        case XPATH_RANGE:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a range\n", arg);
+                            break;
+                        case XPATH_LOCATIONSET:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is a range\n", arg);
+                            break;
+                        case XPATH_USERS:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is user-defined\n", arg);
+                            break;
+                        case XPATH_XSLT_TREE:
+                            xmlGenericError(xmlGenericErrorContext,
+                                            "%s is an XSLT value tree\n",
+                                            arg);
+                            break;
+                    }
+#ifdef LIBXML_XPATH_ENABLED
+                    xmlXPathFreeObject(list);
+#endif
+                } else {
+                    xmlGenericError(xmlGenericErrorContext,
+                                    "%s: no such node\n", arg);
+                }
+                ctxt->pctxt->node = NULL;
+            }
         } else if (!strcmp(command, "base")) {
             xmlShellBase(ctxt, NULL, ctxt->node, NULL);
         } else if (!strcmp(command, "set")) {
-- 
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