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/*
* Copyright © 2020 Canonical Ltd.
* Copyright © 2021 Alexandros Theodotou
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gstrvbuilder.h"
#include "garray.h"
#include "gmem.h"
#include "gmessages.h"
/**
* SECTION:gstrvbuilder
* @title: GStrvBuilder
* @short_description: Helper to create NULL-terminated string arrays.
*
* #GStrvBuilder is a method of easily building dynamically sized
* NULL-terminated string arrays.
*
* The following example shows how to build a two element array:
*
* |[<!-- language="C" -->
* g_autoptr(GStrvBuilder) builder = g_strv_builder_new ();
* g_strv_builder_add (builder, "hello");
* g_strv_builder_add (builder, "world");
* g_auto(GStrv) array = g_strv_builder_end (builder);
* ]|
*
* Since: 2.68
*/
struct _GStrvBuilder
{
GPtrArray array;
};
/**
* g_strv_builder_new:
*
* Creates a new #GStrvBuilder with a reference count of 1.
* Use g_strv_builder_unref() on the returned value when no longer needed.
*
* Returns: (transfer full): the new #GStrvBuilder
*
* Since: 2.68
*/
GStrvBuilder *
g_strv_builder_new (void)
{
return (GStrvBuilder *) g_ptr_array_new_with_free_func (g_free);
}
/**
* g_strv_builder_unref:
* @builder: (transfer full): a #GStrvBuilder allocated by g_strv_builder_new()
*
* Decreases the reference count on @builder.
*
* In the event that there are no more references, releases all memory
* associated with the #GStrvBuilder.
*
* Since: 2.68
**/
void
g_strv_builder_unref (GStrvBuilder *builder)
{
g_ptr_array_unref (&builder->array);
}
/**
* g_strv_builder_ref:
* @builder: (transfer none): a #GStrvBuilder
*
* Atomically increments the reference count of @builder by one.
* This function is thread-safe and may be called from any thread.
*
* Returns: (transfer full): The passed in #GStrvBuilder
*
* Since: 2.68
*/
GStrvBuilder *
g_strv_builder_ref (GStrvBuilder *builder)
{
return (GStrvBuilder *) g_ptr_array_ref (&builder->array);
}
/**
* g_strv_builder_add:
* @builder: a #GStrvBuilder
* @value: a string.
*
* Add a string to the end of the array.
*
* Since 2.68
*/
void
g_strv_builder_add (GStrvBuilder *builder,
const char *value)
{
g_ptr_array_add (&builder->array, g_strdup (value));
}
/**
* g_strv_builder_addv:
* @builder: a #GStrvBuilder
* @value: (array zero-terminated=1): the vector of strings to add
*
* Appends all the strings in the given vector to the builder.
*
* Since 2.70
*/
void
g_strv_builder_addv (GStrvBuilder *builder,
const char **value)
{
gsize i = 0;
g_return_if_fail (builder != NULL);
g_return_if_fail (value != NULL);
for (i = 0; value[i] != NULL; i++)
g_strv_builder_add (builder, value[i]);
}
/**
* g_strv_builder_add_many:
* @builder: a #GStrvBuilder
* @...: one or more strings followed by %NULL
*
* Appends all the given strings to the builder.
*
* Since 2.70
*/
void
g_strv_builder_add_many (GStrvBuilder *builder,
...)
{
va_list var_args;
const gchar *str;
g_return_if_fail (builder != NULL);
va_start (var_args, builder);
while ((str = va_arg (var_args, gchar *)) != NULL)
g_strv_builder_add (builder, str);
va_end (var_args);
}
/**
* g_strv_builder_end:
* @builder: a #GStrvBuilder
*
* Ends the builder process and returns the constructed NULL-terminated string
* array. The returned value should be freed with g_strfreev() when no longer
* needed.
*
* Returns: (transfer full): the constructed string array.
*
* Since 2.68
*/
GStrv
g_strv_builder_end (GStrvBuilder *builder)
{
/* Add NULL terminator */
g_ptr_array_add (&builder->array, NULL);
return (GStrv) g_ptr_array_steal (&builder->array, NULL);
}
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