Feature: Added reportxml support (copy of Icecast's)

Makefile.am

@@ -21,13 +21,15 @@ pkginclude_HEADERS = \
     include/igloo/types.h \
     include/igloo/typedef.h \
     include/igloo/buffer.h \
-    include/igloo/list.h
+    include/igloo/list.h \
+    include/igloo/reportxml.h
 
 libigloo_la_SOURCES = \
     src/libigloo.c \
     src/ro.c \
     src/buffer.c \
-    src/list.c
+    src/list.c \
+    src/reportxml.c
 libigloo_la_LIBADD = \
     avl/libiceavl.la \
     httpp/libicehttpp.la \

include/igloo/reportxml.h

@@ -0,0 +1,148 @@
+/* Icecast
+ *
+ * This program is distributed under the GNU General Public License, version 2.
+ * A copy of this license is included with this source.
+ *
+ * Copyright 2018,      Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
+ */
+
+/* This file contains the API for report XML document parsing, manipulation, and rendering. */
+
+#ifndef _LIBIGLOO__REPORTXML_H_
+#define _LIBIGLOO__REPORTXML_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <libxml/tree.h>
+
+#include <igloo/ro.h>
+
+igloo_RO_FORWARD_TYPE(igloo_reportxml_t);
+igloo_RO_FORWARD_TYPE(igloo_reportxml_node_t);
+igloo_RO_FORWARD_TYPE(igloo_reportxml_database_t);
+
+
+/* XML Tag Types
+ * While a hint of what the nodes are used for is given, see the specification for more details.
+ */
+typedef enum {
+    /* This is a virtual type used to indicate error conditions */
+    REPORTXML_NODE_TYPE__ERROR,
+    /* <report> is the root element of report XML documents */
+    REPORTXML_NODE_TYPE_REPORT,
+    /* <definition> is used to define templates */
+    REPORTXML_NODE_TYPE_DEFINITION,
+    /* <incident> defines an event that is reported */
+    REPORTXML_NODE_TYPE_INCIDENT,
+    /* <state> defines the state an <incident> resulted in */
+    REPORTXML_NODE_TYPE_STATE,
+    /* <backtrace> provides helpful information about the location some event happend */
+    REPORTXML_NODE_TYPE_BACKTRACE,
+    /* <position> defines an element within <backtrace> */
+    REPORTXML_NODE_TYPE_POSITION,
+    /* <more> allows to skip <position>s in <backtrace> for any reason
+     * (e.g. they are unknown or consider of no intrest)
+     */
+    REPORTXML_NODE_TYPE_MORE,
+    /* <fix> provides a machine readable way to actually fix the problem */
+    REPORTXML_NODE_TYPE_FIX,
+    /* <action> defines a specific action to do */
+    REPORTXML_NODE_TYPE_ACTION,
+    /* <reason> allows to define why an event happend */
+    REPORTXML_NODE_TYPE_REASON,
+    /* <text> is used to provide messages to the user.
+     * The content of <text> is not machine readable.
+     */
+    REPORTXML_NODE_TYPE_TEXT,
+    /* <timestamp> provides a way to present a point in time an event happend */
+    REPORTXML_NODE_TYPE_TIMESTAMP,
+    /* <resource> names a resource that was involved in the event such as user input or the result */
+    REPORTXML_NODE_TYPE_RESOURCE,
+    /* <value> provides an actual value for a <resource> */
+    REPORTXML_NODE_TYPE_VALUE,
+    /* <reference> provides a way to refer to external documents such as documentation */
+    REPORTXML_NODE_TYPE_REFERENCE,
+    /* <extension> is used to allow application specific extensions */
+    REPORTXML_NODE_TYPE_EXTENSION
+} reportxml_node_type_t;
+
+
+/* ---[ Document level ]--- */
+/* The document object is NOT thread safe. */
+
+
+/* This gets the root node of a report XML document */
+igloo_reportxml_node_t *      reportxml_get_root_node(igloo_reportxml_t *report);
+/* This selects a node by an attribute and it's value.
+ * This is mostly useful to look for an object by using it's ID.
+ * If more than one node matches the first one found is returned.
+ * If the parameter include_definitions is true nodes from within
+ * <definition> are also considered. If it is false nodes inside
+ * <definition>s are skipped.
+ */
+igloo_reportxml_node_t *      reportxml_get_node_by_attribute(igloo_reportxml_t *report, const char *key, const char *value, int include_definitions);
+/* This gets a node by it's type. Otherwise identical to reportxml_get_node_by_attribute() */
+igloo_reportxml_node_t *      reportxml_get_node_by_type(igloo_reportxml_t *report, reportxml_node_type_t type, int include_definitions);
+/* This function parses an XML document and returns the parst report XML document */
+igloo_reportxml_t *           reportxml_parse_xmldoc(xmlDocPtr doc);
+/* This function renders an report XML document as XML structure */
+xmlDocPtr               reportxml_render_xmldoc(igloo_reportxml_t *report);
+
+
+/* ---[ Node level ]--- */
+/* The node object is NOT thread safe. */
+
+
+/* This creates a new node of type type.
+ * It's id, definition, and akindof attributes can be given as parameters.
+ */
+igloo_reportxml_node_t *      reportxml_node_new(reportxml_node_type_t type, const char *id, const char *definition, const char *akindof);
+/* This parses an XML node and returns the resulting report XML node */
+igloo_reportxml_node_t *      reportxml_node_parse_xmlnode(xmlNodePtr xmlnode);
+/* Copy an report XML node (and it's children) */
+igloo_reportxml_node_t *      reportxml_node_copy(igloo_reportxml_node_t *node);
+/* Renders an report XML node as XML node */
+xmlNodePtr              reportxml_node_render_xmlnode(igloo_reportxml_node_t *node);
+/* This gets the type of an report XML node */
+reportxml_node_type_t   reportxml_node_get_type(igloo_reportxml_node_t *node);
+/* Gets and Sets attribute values */
+int                     reportxml_node_set_attribute(igloo_reportxml_node_t *node, const char *key, const char *value);
+char *                  reportxml_node_get_attribute(igloo_reportxml_node_t *node, const char *key);
+/* Adds, counts, and get child nodes */
+int                     reportxml_node_add_child(igloo_reportxml_node_t *node, igloo_reportxml_node_t *child);
+ssize_t                 reportxml_node_count_child(igloo_reportxml_node_t *node);
+igloo_reportxml_node_t *      reportxml_node_get_child(igloo_reportxml_node_t *node, size_t idx);
+/* This gets an child by it's value of the given attribute. See reportxml_get_node_by_attribute() for more details. */
+igloo_reportxml_node_t *      reportxml_node_get_child_by_attribute(igloo_reportxml_node_t *node, const char *key, const char *value, int include_definitions);
+/* This gets a child by it's type. Otherwise identical to reportxml_node_get_child_by_attribute() */
+igloo_reportxml_node_t *      reportxml_node_get_child_by_type(igloo_reportxml_node_t *node, reportxml_node_type_t type, int include_definitions);
+/* This gets and sets the text content of an node (used for <text>) */
+int                     reportxml_node_set_content(igloo_reportxml_node_t *node, const char *value);
+char *                  reportxml_node_get_content(igloo_reportxml_node_t *node);
+/* Adds, counts, and gets XML childs (used for <extension>) */
+int                     reportxml_node_add_xml_child(igloo_reportxml_node_t *node, xmlNodePtr child);
+ssize_t                 reportxml_node_count_xml_child(igloo_reportxml_node_t *node);
+xmlNodePtr              reportxml_node_get_xml_child(igloo_reportxml_node_t *node, size_t idx);
+
+
+/* ---[ Database level ]--- */
+/* The database object is thread safe. */
+
+
+/* Add an report to the database */
+int                     reportxml_database_add_report(igloo_reportxml_database_t *db, igloo_reportxml_t *report);
+/* Build a node (copy) from the data in the database based on the given ID (using "definition" and "defines" attributes)
+ * depth may be used to select how many recursions may be used to resolve definitions within defines.
+ * The default value is selected by passing -1 (recommended).
+ */
+igloo_reportxml_node_t *      reportxml_database_build_node(igloo_reportxml_database_t *db, const char *id, ssize_t depth);
+/* This does the same as reportxml_database_build_node() except that a new report document is returned. */
+igloo_reportxml_t *           reportxml_database_build_report(igloo_reportxml_database_t *db, const char *id, ssize_t depth);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/igloo/types.h

@@ -35,6 +35,10 @@ extern "C" {
 typedef struct igloo_buffer_tag igloo_buffer_t;
 typedef struct igloo_list_tag igloo_list_t;
 
+typedef struct igloo_reportxml_tag igloo_reportxml_t;
+typedef struct igloo_reportxml_node_tag igloo_reportxml_node_t;
+typedef struct igloo_reportxml_database_tag igloo_reportxml_database_t;
+
 /*
  * This header includes forward declarations for several basic types.
  */
@@ -49,6 +53,9 @@ typedef union __attribute__ ((__transparent_union__)) {
     igloo_RO_TYPE(igloo_ro_base_t)
     igloo_RO_TYPE(igloo_buffer_t)
     igloo_RO_TYPE(igloo_list_t)
+    igloo_RO_TYPE(igloo_reportxml_t)
+    igloo_RO_TYPE(igloo_reportxml_node_t)
+    igloo_RO_TYPE(igloo_reportxml_database_t)
 
     /* Now we add the current compilation unit's private types if any */
 #ifdef igloo_RO_PRIVATETYPES