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Colin Walters
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386
gdump.c
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386
gdump.c
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/* GObject introspection: Dump introspection data
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*
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* Copyright (C) 2008 Colin Walters <walters@verbum.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <glib.h>
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#include <glib-object.h>
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#include <gio/gio.h>
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#include "girepository.h"
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#include "config.h"
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#include <string.h>
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static void
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escaped_printf (GOutputStream *out, const char *fmt, ...)
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{
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char *str;
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va_list args;
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gsize written;
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GError *error = NULL;
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va_start (args, fmt);
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str = g_markup_vprintf_escaped (fmt, args);
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if (!g_output_stream_write_all (out, str, strlen (str), &written, NULL, &error))
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{
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g_critical ("failed to write to iochannel: %s", error->message);
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g_clear_error (&error);
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}
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g_free (str);
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va_end (args);
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}
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static void
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goutput_write (GOutputStream *out, const char *str)
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{
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gsize written;
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GError *error = NULL;
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if (!g_output_stream_write_all (out, str, strlen (str), &written, NULL, &error))
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{
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g_critical ("failed to write to iochannel: %s", error->message);
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g_clear_error (&error);
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}
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}
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typedef GType (*GetTypeFunc)(void);
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static GType
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invoke_get_type (GModule *self, const char *symbol, GError **error)
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{
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GetTypeFunc sym;
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if (!g_module_symbol (self, symbol, (void**)&sym))
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Failed to find symbol '%s'", symbol);
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return G_TYPE_INVALID;
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}
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return sym ();
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}
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static void
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dump_properties (GType type, GOutputStream *out)
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{
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guint i;
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guint n_properties;
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GParamSpec **props;
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if (G_TYPE_FUNDAMENTAL (type) == G_TYPE_OBJECT)
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{
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GObjectClass *klass;
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klass = g_type_class_ref (type);
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props = g_object_class_list_properties (klass, &n_properties);
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}
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else
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{
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void *klass;
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klass = g_type_default_interface_ref (type);
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props = g_object_interface_list_properties (klass, &n_properties);
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}
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for (i = 0; i < n_properties; i++)
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{
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GParamSpec *prop;
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prop = props[i];
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if (prop->owner_type != type)
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continue;
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escaped_printf (out, " <property name=\"%s\" type=\"%s\" flags=\"%d\"/>\n",
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prop->name, g_type_name (prop->value_type), prop->flags);
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}
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g_free (props);
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}
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static void
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dump_signals (GType type, GOutputStream *out)
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{
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guint i;
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guint n_sigs;
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guint *sig_ids;
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sig_ids = g_signal_list_ids (type, &n_sigs);
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for (i = 0; i < n_sigs; i++)
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{
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guint sigid;
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GSignalQuery query;
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guint j;
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sigid = sig_ids[i];
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g_signal_query (sigid, &query);
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escaped_printf (out, " <signal name=\"%s\" return=\"%s\">\n",
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query.signal_name, g_type_name (query.return_type));
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for (j = 0; j < query.n_params; j++)
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{
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escaped_printf (out, " <param type=\"%s\"/>\n",
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g_type_name (query.param_types[j]));
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}
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goutput_write (out, " </signal>\n");
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}
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}
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static void
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dump_object_type (GType type, const char *symbol, GOutputStream *out)
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{
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guint n_interfaces;
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guint i;
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GType *interfaces;
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escaped_printf (out, " <class name=\"%s\" get-type=\"%s\"",
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g_type_name (type), symbol);
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if (type != G_TYPE_OBJECT)
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escaped_printf (out, " parent=\"%s\"", g_type_name (g_type_parent (type)));
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if (G_TYPE_IS_ABSTRACT (type))
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escaped_printf (out, " abstract=\"1\"");
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goutput_write (out, ">\n");
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interfaces = g_type_interfaces (type, &n_interfaces);
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for (i = 0; i < n_interfaces; i++)
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{
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GType itype = interfaces[i];
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escaped_printf (out, " <implements name=\"%s\"/>\n",
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g_type_name (itype));
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}
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dump_properties (type, out);
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dump_signals (type, out);
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goutput_write (out, " </class>\n");
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}
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static void
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dump_interface_type (GType type, const char *symbol, GOutputStream *out)
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{
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guint n_interfaces;
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guint i;
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GType *interfaces;
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escaped_printf (out, " <interface name=\"%s\" get-type=\"%s\">\n",
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g_type_name (type), symbol);
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interfaces = g_type_interface_prerequisites (type, &n_interfaces);
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for (i = 0; i < n_interfaces; i++)
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{
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GType itype = interfaces[i];
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escaped_printf (out, " <extends>%s</extends>\n",
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g_type_name (itype));
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}
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dump_properties (type, out);
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dump_signals (type, out);
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goutput_write (out, " </interface>\n");
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}
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static void
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dump_boxed_type (GType type, const char *symbol, GOutputStream *out)
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{
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escaped_printf (out, " <boxed name=\"%s\" get-type=\"%s\"/>\n",
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g_type_name (type), symbol);
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}
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static void
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dump_flags_type (GType type, const char *symbol, GOutputStream *out)
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{
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guint i;
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GFlagsClass *klass;
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klass = g_type_class_ref (type);
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escaped_printf (out, " <flags name=\"%s\" get-type=\"%s\">\n",
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g_type_name (type), symbol);
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for (i = 0; i < klass->n_values; i++)
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{
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GFlagsValue *value = &(klass->values[i]);
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escaped_printf (out, " <member name=\"%s\" nick=\"%s\" value=\"%d\"/>\n",
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value->value_name, value->value_nick, value->value);
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}
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goutput_write (out, " </flags>\n");
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}
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static void
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dump_enum_type (GType type, const char *symbol, GOutputStream *out)
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{
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guint i;
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GEnumClass *klass;
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klass = g_type_class_ref (type);
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escaped_printf (out, " <enum name=\"%s\" get-type=\"%s\">\n",
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g_type_name (type), symbol);
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for (i = 0; i < klass->n_values; i++)
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{
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GEnumValue *value = &(klass->values[i]);
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escaped_printf (out, " <member name=\"%s\" nick=\"%s\" value=\"%d\"/>\n",
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value->value_name, value->value_nick, value->value);
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}
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goutput_write (out, " </enum>");
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}
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static void
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dump_type (GType type, const char *symbol, GOutputStream *out)
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{
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g_printerr ("processing %s\n", g_type_name (type));
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switch (g_type_fundamental (type))
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{
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case G_TYPE_OBJECT:
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dump_object_type (type, symbol, out);
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break;
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case G_TYPE_INTERFACE:
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dump_interface_type (type, symbol, out);
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break;
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case G_TYPE_BOXED:
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dump_boxed_type (type, symbol, out);
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break;
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case G_TYPE_FLAGS:
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dump_flags_type (type, symbol, out);
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break;
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case G_TYPE_ENUM:
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dump_enum_type (type, symbol, out);
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break;
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case G_TYPE_POINTER:
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/* GValue, etc. Just skip them. */
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break;
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default:
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g_warning ("unhandled gtype %s", g_type_name (type));
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}
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}
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/**
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* g_irepository_dump:
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* @arg: Comma-separated pair of input and output filenames
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* @error: a %GError
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*
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* Argument specified is a comma-separated pair of filenames; i.e. of
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* the form "input.txt,output.xml". The input file should be a
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* UTF-8 Unix-line-ending text file, with each line containing the name
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* of a GType _get_type function.
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*
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* The output file should already exist, but be empty. This function will
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* overwrite its contents.
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*
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* Returns: %TRUE on success, %FALSE on error
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*/
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gboolean
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g_irepository_dump (const char *arg, GError **error)
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{
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GHashTable *output_types;
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char **args;
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GFile *input_file;
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GFile *output_file;
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GFileInputStream *input;
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GFileOutputStream *output;
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GDataInputStream *in;
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GModule *self;
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gboolean caught_error = FALSE;
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self = g_module_open (NULL, 0);
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if (!self)
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"failed to open self: %s",
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g_module_error ());
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return FALSE;
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}
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args = g_strsplit (arg, ",", 2);
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input_file = g_file_new_for_path (args[0]);
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output_file = g_file_new_for_path (args[1]);
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input = g_file_read (input_file, NULL, error);
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if (input == NULL)
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return FALSE;
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output = g_file_replace (output_file, NULL, FALSE, 0, NULL, error);
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if (output == NULL)
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{
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g_input_stream_close (G_INPUT_STREAM (input), NULL, NULL);
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return FALSE;
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}
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goutput_write (G_OUTPUT_STREAM (output), "<?xml version=\"1.0\"?>\n");
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goutput_write (G_OUTPUT_STREAM (output), "<dump>\n");
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output_types = g_hash_table_new (NULL, NULL);
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in = g_data_input_stream_new (G_INPUT_STREAM (input));
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g_object_unref (input);
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while (TRUE)
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{
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gsize len;
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char *line = g_data_input_stream_read_line (in, &len, NULL, NULL);
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GType type;
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if (line == NULL || *line == '\0')
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{
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g_free (line);
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break;
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}
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g_strchomp (line);
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type = invoke_get_type (self, line, error);
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if (type == G_TYPE_INVALID)
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{
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caught_error = TRUE;
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g_free (line);
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break;
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}
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if (g_hash_table_lookup (output_types, (gpointer) type))
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goto next;
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g_hash_table_insert (output_types, (gpointer) type, (gpointer) type);
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dump_type (type, line, G_OUTPUT_STREAM (output));
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next:
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g_free (line);
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}
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g_hash_table_destroy (output_types);
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goutput_write (G_OUTPUT_STREAM (output), "</dump>\n");
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{
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GError **ioerror;
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/* Avoid overwriting an earlier set error */
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if (caught_error)
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ioerror = NULL;
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else
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ioerror = error;
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if (!g_input_stream_close (G_INPUT_STREAM (in), NULL, ioerror))
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return FALSE;
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if (!g_output_stream_close (G_OUTPUT_STREAM (output), NULL, ioerror))
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return FALSE;
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}
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return !caught_error;
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}
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