Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 231 insertions, 0 deletions

diff --git a/src/debug/logger.cpp b/src/debug/logger.cpp
new file mode 100644
index 0000000..37b8221
--- /dev/null
+++ b/src/debug/logger.cpp
@@ -0,0 +1,231 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Inkscape::Debug::Logger - debug logging facility
+ *
+ * Authors:
+ *   MenTaLguY <mental@rydia.net>
+ *
+ * Copyright (C) 2005 MenTaLguY
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <fstream>
+#include <memory>
+#include <string>
+#include <vector>
+#include <glib.h>
+#include "inkscape-version.h"
+#include "debug/logger.h"
+#include "debug/simple-event.h"
+
+namespace Inkscape {
+
+namespace Debug {
+
+bool Logger::_enabled=false;
+bool Logger::_category_mask[Event::N_CATEGORIES];
+
+namespace {
+
+static void write_escaped_value(std::ostream &os, char const *value) {
+    for ( char const *current=value ; *current ; ++current ) {
+        switch (*current) {
+        case '&':
+            os << "&amp;";
+            break;
+        case '"':
+            os << "&quot;";
+            break;
+        case '\'':
+            os << "&apos;";
+            break;
+        case '<':
+            os << "&lt;";
+            break;
+        case '>':
+            os << "&gt;";
+            break;
+        default:
+            os.put(*current);
+        }
+    }
+}
+
+static void write_indent(std::ostream &os, unsigned depth) {
+    for ( unsigned i = 0 ; i < depth ; i++ ) {
+        os.write("  ", 2);
+    }
+}
+
+static std::ofstream log_stream;
+static bool empty_tag=false;
+typedef std::vector<std::shared_ptr<std::string>> TagStack;
+static TagStack &tag_stack() {
+    static TagStack stack;
+    return stack;
+}
+
+static void do_shutdown() {
+    Debug::Logger::shutdown();
+}
+
+static bool equal_range(char const *c_string,
+                        char const *start, char const *end)
+{
+    return !std::strncmp(start, c_string, end - start) &&
+           !c_string[end - start];
+}
+
+static void set_category_mask(bool * const mask, char const *filter) {
+    if (!filter) {
+        for ( unsigned i = 0 ; i < Event::N_CATEGORIES ; i++ ) {
+            mask[i] = true;
+        }
+        return;
+    } else {
+        for ( unsigned i = 0 ; i < Event::N_CATEGORIES ; i++ ) {
+            mask[i] = false;
+        }
+        mask[Event::CORE] = true;
+    }
+
+    char const *start;
+    char const *end;
+    start = end = filter;
+    while (*end) {
+        while ( *end && *end != ',' ) { end++; }
+        if ( start != end ) {
+            struct CategoryName {
+                char const *name;
+                Event::Category category;
+            };
+            static const CategoryName category_names[] = {
+                { "CORE", Event::CORE },
+                { "XML", Event::XML },
+                { "SPOBJECT", Event::SPOBJECT },
+                { "DOCUMENT", Event::DOCUMENT },
+                { "REFCOUNT", Event::REFCOUNT },
+                { "EXTENSION", Event::EXTENSION },
+                { "FINALIZERS", Event::FINALIZERS },
+                { "INTERACTION", Event::INTERACTION },
+                { "CONFIGURATION", Event::CONFIGURATION },
+                { "OTHER", Event::OTHER },
+                { nullptr, Event::OTHER }
+            };
+            CategoryName const *iter;
+            for ( iter = category_names ; iter->name ; iter++ ) {
+                if (equal_range(iter->name, start, end)) {
+                    mask[iter->category] = true;
+                    break;
+                }
+            }
+            if (!iter->name) {
+                g_warning("Unknown debugging category %*s", (int)(end - start), start);
+            }
+        }
+        if (*end) {
+            start = end = end + 1;
+        }
+    }
+}
+
+typedef SimpleEvent<Event::CORE> CoreEvent;
+
+class SessionEvent : public CoreEvent {
+public:
+    SessionEvent() : CoreEvent("session") {
+        _addProperty("inkscape-version", Inkscape::version_string);
+    }
+};
+
+}
+
+void Logger::init() {
+    if (!_enabled) {
+        char const *log_filename=std::getenv("INKSCAPE_DEBUG_LOG");
+        if (log_filename) {
+            log_stream.open(log_filename);
+            if (log_stream.is_open()) {
+                char const *log_filter=std::getenv("INKSCAPE_DEBUG_FILTER");
+                set_category_mask(_category_mask, log_filter);
+                log_stream << "<?xml version=\"1.0\"?>\n";
+                log_stream.flush();
+                _enabled = true;
+                start<SessionEvent>();
+                std::atexit(&do_shutdown);
+            }
+        }
+    }
+}
+
+void Logger::_start(Event const &event) {
+    char const *name=event.name();
+
+    if (empty_tag) {
+        log_stream << ">\n";
+    }
+
+    write_indent(log_stream, tag_stack().size());
+
+    log_stream << "<" << name;
+
+    unsigned property_count=event.propertyCount();
+    for ( unsigned i = 0 ; i < property_count ; i++ ) {
+        Event::PropertyPair property=event.property(i);
+        log_stream << " " << property.name << "=\"";
+        write_escaped_value(log_stream, property.value->c_str());
+        log_stream << "\"";
+    }
+
+    log_stream.flush();
+
+    tag_stack().push_back(std::make_shared<std::string>(name));
+    empty_tag = true;
+
+    event.generateChildEvents();
+}
+
+void Logger::_skip() {
+    tag_stack().push_back(nullptr);
+}
+
+void Logger::_finish() {
+    if (tag_stack().back()) {
+        if (empty_tag) {
+            log_stream << "/>\n";
+        } else {
+            write_indent(log_stream, tag_stack().size() - 1);
+            log_stream << "</" << tag_stack().back()->c_str() << ">\n";
+        }
+        log_stream.flush();
+
+        empty_tag = false;
+    }
+
+    tag_stack().pop_back();
+}
+
+void Logger::shutdown() {
+    if (_enabled) {
+        while (!tag_stack().empty()) {
+            finish();
+        }
+    }
+}
+
+}
+
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :