moving trunk for module inkscape

(bzr r1)

1 files changed, 204 insertions, 0 deletions

diff --git a/src/debug/logger.cpp b/src/debug/logger.cpp
new file mode 100644
index 000000000..a3c7b0430
--- /dev/null
+++ b/src/debug/logger.cpp
@@ -0,0 +1,204 @@
+/*
+ * Inkscape::Debug::Logger - debug logging facility
+ *
+ * Authors:
+ *   MenTaLguY <mental@rydia.net>
+ *
+ * Copyright (C) 2005 MenTaLguY
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include <fstream>
+#include <vector>
+#include <glib/gmessages.h>
+#include "debug/logger.h"
+#include "debug/simple-event.h"
+#include "gc-alloc.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, Util::SharedCStringPtr 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<Util::SharedCStringPtr, GC::Alloc<Util::SharedCStringPtr, GC::MANUAL> > 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 ) {
+            if (equal_range("CORE", start, end)) {
+                mask[Event::CORE] = true;
+            } else if (equal_range("XML", start, end)) {
+                mask[Event::XML] = true;
+            } else if (equal_range("SPOBJECT", start, end)) {
+                mask[Event::SPOBJECT] = true;
+            } else if (equal_range("DOCUMENT", start, end)) {
+                mask[Event::DOCUMENT] = true;
+            } else if (equal_range("REFCOUNT", start, end)) {
+                mask[Event::REFCOUNT] = true;
+            } else if (equal_range("EXTENSION", start, end)) {
+                mask[Event::EXTENSION] = true;
+            } else {
+                g_warning("Unknown debugging category %*s", end - start, start);
+            }
+        }
+        if (*end) {
+            start = end = end + 1;
+        }
+    }
+}
+
+}
+
+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<SimpleEvent<Event::CORE> >(Util::SharedCStringPtr::coerce("session"));
+                std::atexit(&do_shutdown);
+            }
+        }
+    }
+}
+
+void Logger::_start(Event const &event) {
+    Util::SharedCStringPtr name=event.name();
+
+    if (empty_tag) {
+        log_stream << ">\n";
+    }
+
+    write_indent(log_stream, tag_stack().size());
+
+    log_stream << "<" << name.cString();
+
+    unsigned property_count=event.propertyCount();
+    for ( unsigned i = 0 ; i < property_count ; i++ ) {
+        Event::PropertyPair property=event.property(i);
+        log_stream << " " << property.name.cString() << "=\"";
+        write_escaped_value(log_stream, property.value);
+        log_stream << "\"";
+    }
+
+    log_stream.flush();
+
+    tag_stack().push_back(name);
+    empty_tag = true;
+}
+
+void Logger::_skip() {
+    tag_stack().push_back(Util::SharedCStringPtr());
+}
+
+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().cString() << ">\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:encoding=utf-8:textwidth=99 :