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https://github.com/varun-r-mallya/sysprof.git
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libsysprof-ui: start on launch UI
This commit is contained in:
Christian Hergert
377
src/libsysprof-ui/sysprof-environ.c
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377
src/libsysprof-ui/sysprof-environ.c
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/* sysprof-environ.c
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*
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* Copyright 2016-2019 Christian Hergert <christian@hergert.me>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#define G_LOG_DOMAIN "sysprof-environ"
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#include "config.h"
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#include "sysprof-environ.h"
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#include "sysprof-environ-variable.h"
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struct _SysprofEnviron
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{
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GObject parent_instance;
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GPtrArray *variables;
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};
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static void list_model_iface_init (GListModelInterface *iface);
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G_DEFINE_TYPE_EXTENDED (SysprofEnviron, sysprof_environ, G_TYPE_OBJECT, 0,
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G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, list_model_iface_init))
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enum {
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CHANGED,
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LAST_SIGNAL
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};
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static guint signals [LAST_SIGNAL];
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static void
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sysprof_environ_finalize (GObject *object)
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{
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SysprofEnviron *self = (SysprofEnviron *)object;
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g_clear_pointer (&self->variables, g_ptr_array_unref);
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G_OBJECT_CLASS (sysprof_environ_parent_class)->finalize (object);
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}
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static void
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sysprof_environ_class_init (SysprofEnvironClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = sysprof_environ_finalize;
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signals [CHANGED] =
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g_signal_new ("changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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0, NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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g_signal_set_va_marshaller (signals [CHANGED],
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G_TYPE_FROM_CLASS (klass),
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g_cclosure_marshal_VOID__VOIDv);
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}
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static void
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sysprof_environ_items_changed (SysprofEnviron *self)
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{
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g_assert (SYSPROF_IS_ENVIRON (self));
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g_signal_emit (self, signals [CHANGED], 0);
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}
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static void
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sysprof_environ_init (SysprofEnviron *self)
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{
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self->variables = g_ptr_array_new_with_free_func (g_object_unref);
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g_signal_connect (self,
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"items-changed",
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G_CALLBACK (sysprof_environ_items_changed),
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NULL);
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}
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static GType
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sysprof_environ_get_item_type (GListModel *model)
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{
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return SYSPROF_TYPE_ENVIRON_VARIABLE;
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}
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static gpointer
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sysprof_environ_get_item (GListModel *model,
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guint position)
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{
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SysprofEnviron *self = (SysprofEnviron *)model;
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g_return_val_if_fail (SYSPROF_IS_ENVIRON (self), NULL);
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g_return_val_if_fail (position < self->variables->len, NULL);
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return g_object_ref (g_ptr_array_index (self->variables, position));
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}
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static guint
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sysprof_environ_get_n_items (GListModel *model)
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{
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SysprofEnviron *self = (SysprofEnviron *)model;
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g_return_val_if_fail (SYSPROF_IS_ENVIRON (self), 0);
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return self->variables->len;
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}
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static void
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list_model_iface_init (GListModelInterface *iface)
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{
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iface->get_n_items = sysprof_environ_get_n_items;
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iface->get_item = sysprof_environ_get_item;
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iface->get_item_type = sysprof_environ_get_item_type;
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}
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static void
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sysprof_environ_variable_notify (SysprofEnviron *self,
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GParamSpec *pspec,
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SysprofEnvironVariable *variable)
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{
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g_assert (SYSPROF_IS_ENVIRON (self));
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g_signal_emit (self, signals [CHANGED], 0);
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}
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void
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sysprof_environ_setenv (SysprofEnviron *self,
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const gchar *key,
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const gchar *value)
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{
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guint i;
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g_return_if_fail (SYSPROF_IS_ENVIRON (self));
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g_return_if_fail (key != NULL);
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for (i = 0; i < self->variables->len; i++)
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{
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SysprofEnvironVariable *var = g_ptr_array_index (self->variables, i);
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const gchar *var_key = sysprof_environ_variable_get_key (var);
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if (g_strcmp0 (key, var_key) == 0)
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{
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if (value == NULL)
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{
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g_ptr_array_remove_index (self->variables, i);
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g_list_model_items_changed (G_LIST_MODEL (self), i, 1, 0);
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return;
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}
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sysprof_environ_variable_set_value (var, value);
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return;
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}
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}
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if (value != NULL)
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{
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SysprofEnvironVariable *var;
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guint position = self->variables->len;
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var = g_object_new (SYSPROF_TYPE_ENVIRON_VARIABLE,
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"key", key,
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"value", value,
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NULL);
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g_signal_connect_object (var,
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"notify",
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G_CALLBACK (sysprof_environ_variable_notify),
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self,
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G_CONNECT_SWAPPED);
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g_ptr_array_add (self->variables, var);
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g_list_model_items_changed (G_LIST_MODEL (self), position, 0, 1);
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}
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}
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const gchar *
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sysprof_environ_getenv (SysprofEnviron *self,
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const gchar *key)
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{
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guint i;
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g_return_val_if_fail (SYSPROF_IS_ENVIRON (self), NULL);
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g_return_val_if_fail (key != NULL, NULL);
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for (i = 0; i < self->variables->len; i++)
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{
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SysprofEnvironVariable *var = g_ptr_array_index (self->variables, i);
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const gchar *var_key = sysprof_environ_variable_get_key (var);
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if (g_strcmp0 (key, var_key) == 0)
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return sysprof_environ_variable_get_value (var);
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}
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return NULL;
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}
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/**
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* sysprof_environ_get_environ:
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* @self: An #SysprofEnviron
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*
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* Gets the environment as a set of key=value pairs, suitable for use
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* in various GLib process functions.
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*
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* Returns: (transfer full): A newly allocated string array.
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*
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* Since: 3.32
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*/
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gchar **
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sysprof_environ_get_environ (SysprofEnviron *self)
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{
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GPtrArray *ar;
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guint i;
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g_return_val_if_fail (SYSPROF_IS_ENVIRON (self), NULL);
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ar = g_ptr_array_new ();
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for (i = 0; i < self->variables->len; i++)
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{
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SysprofEnvironVariable *var = g_ptr_array_index (self->variables, i);
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const gchar *key = sysprof_environ_variable_get_key (var);
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const gchar *value = sysprof_environ_variable_get_value (var);
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if (value == NULL)
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value = "";
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if (key != NULL)
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g_ptr_array_add (ar, g_strdup_printf ("%s=%s", key, value));
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}
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g_ptr_array_add (ar, NULL);
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return (gchar **)g_ptr_array_free (ar, FALSE);
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}
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SysprofEnviron *
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sysprof_environ_new (void)
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{
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return g_object_new (SYSPROF_TYPE_ENVIRON, NULL);
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}
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void
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sysprof_environ_remove (SysprofEnviron *self,
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SysprofEnvironVariable *variable)
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{
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guint i;
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g_return_if_fail (SYSPROF_IS_ENVIRON (self));
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g_return_if_fail (SYSPROF_IS_ENVIRON_VARIABLE (variable));
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for (i = 0; i < self->variables->len; i++)
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{
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SysprofEnvironVariable *item = g_ptr_array_index (self->variables, i);
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if (item == variable)
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{
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g_ptr_array_remove_index (self->variables, i);
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g_list_model_items_changed (G_LIST_MODEL (self), i, 1, 0);
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break;
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}
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}
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}
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void
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sysprof_environ_append (SysprofEnviron *self,
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SysprofEnvironVariable *variable)
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{
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guint position;
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g_return_if_fail (SYSPROF_IS_ENVIRON (self));
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g_return_if_fail (SYSPROF_IS_ENVIRON_VARIABLE (variable));
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position = self->variables->len;
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g_signal_connect_object (variable,
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"notify",
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G_CALLBACK (sysprof_environ_variable_notify),
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self,
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G_CONNECT_SWAPPED);
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g_ptr_array_add (self->variables, g_object_ref (variable));
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g_list_model_items_changed (G_LIST_MODEL (self), position, 0, 1);
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}
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/**
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* sysprof_environ_copy:
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* @self: An #SysprofEnviron
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*
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* Copies the contents of #SysprofEnviron into a newly allocated #SysprofEnviron.
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*
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* Returns: (transfer full): An #SysprofEnviron.
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*
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* Since: 3.32
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*/
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SysprofEnviron *
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sysprof_environ_copy (SysprofEnviron *self)
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{
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g_autoptr(SysprofEnviron) copy = NULL;
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g_return_val_if_fail (SYSPROF_IS_ENVIRON (self), NULL);
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copy = sysprof_environ_new ();
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sysprof_environ_copy_into (self, copy, TRUE);
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return g_steal_pointer (©);
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}
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void
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sysprof_environ_copy_into (SysprofEnviron *self,
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SysprofEnviron *dest,
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gboolean replace)
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{
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g_return_if_fail (SYSPROF_IS_ENVIRON (self));
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g_return_if_fail (SYSPROF_IS_ENVIRON (dest));
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for (guint i = 0; i < self->variables->len; i++)
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{
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SysprofEnvironVariable *var = g_ptr_array_index (self->variables, i);
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const gchar *key = sysprof_environ_variable_get_key (var);
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const gchar *value = sysprof_environ_variable_get_value (var);
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if (replace || sysprof_environ_getenv (dest, key) == NULL)
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sysprof_environ_setenv (dest, key, value);
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}
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}
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/**
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* ide_environ_parse:
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* @pair: the KEY=VALUE pair
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* @key: (out) (optional): a location for a @key
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* @value: (out) (optional): a location for a @value
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*
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* Parses a KEY=VALUE style key-pair into @key and @value.
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*
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* Returns: %TRUE if @pair was successfully parsed
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*
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* Since: 3.32
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*/
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gboolean
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ide_environ_parse (const gchar *pair,
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gchar **key,
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gchar **value)
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{
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const gchar *eq;
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g_return_val_if_fail (pair != NULL, FALSE);
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if (key != NULL)
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*key = NULL;
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if (value != NULL)
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*value = NULL;
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if ((eq = strchr (pair, '=')))
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{
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if (key != NULL)
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*key = g_strndup (pair, eq - pair);
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if (value != NULL)
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*value = g_strdup (eq + 1);
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return TRUE;
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}
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return FALSE;
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}
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