2f4a68c8c3
The order and way include macros were structured was chaotic, with no real common thread between files. Try to tidy up the mess with some common scheme, to make things look less messy.
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2014 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (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, but
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* 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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* 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by:
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* Jasper St. Pierre <jstpierre@mecheye.net>
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*/
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#include "config.h"
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#include "backends/native/dbus-utils.h"
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#include <glib.h>
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/* Stolen from tp_escape_as_identifier, from tp-glib,
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* which follows the same escaping convention as systemd.
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*/
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static inline gboolean
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_esc_ident_bad (gchar c, gboolean is_first)
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{
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return ((c < 'a' || c > 'z') &&
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(c < 'A' || c > 'Z') &&
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(c < '0' || c > '9' || is_first));
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}
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static gchar *
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escape_dbus_component (const gchar *name)
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{
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gboolean bad = FALSE;
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size_t len = 0;
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GString *op;
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const gchar *ptr, *first_ok;
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g_return_val_if_fail (name != NULL, NULL);
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/* fast path for empty name */
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if (name[0] == '\0')
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return g_strdup ("_");
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for (ptr = name; *ptr; ptr++)
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{
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if (_esc_ident_bad (*ptr, ptr == name))
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{
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bad = TRUE;
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len += 3;
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}
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else
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len++;
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}
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/* fast path if it's clean */
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if (!bad)
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return g_strdup (name);
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/* If strictly less than ptr, first_ok is the first uncopied safe character.
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*/
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first_ok = name;
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op = g_string_sized_new (len);
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for (ptr = name; *ptr; ptr++)
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{
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if (_esc_ident_bad (*ptr, ptr == name))
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{
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/* copy preceding safe characters if any */
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if (first_ok < ptr)
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{
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g_string_append_len (op, first_ok, ptr - first_ok);
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}
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/* escape the unsafe character */
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g_string_append_printf (op, "_%02x", (unsigned char)(*ptr));
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/* restart after it */
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first_ok = ptr + 1;
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}
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}
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/* copy trailing safe characters if any */
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if (first_ok < ptr)
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{
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g_string_append_len (op, first_ok, ptr - first_ok);
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}
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return g_string_free (op, FALSE);
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}
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char *
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get_escaped_dbus_path (const char *prefix,
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const char *component)
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{
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char *escaped_component = escape_dbus_component (component);
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char *path = g_strconcat (prefix, "/", escaped_component, NULL);
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g_free (escaped_component);
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return path;
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}
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