| Current File : //usr/share/doc/dbus/api/dbus-shell_8c_source.html |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>D-Bus: dbus-shell.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">D-Bus
 <span id="projectnumber">1.8.20</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Generated by Doxygen 1.7.6.1 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">dbus-shell.c</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/* dbus-shell.c Shell command line utility functions.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002, 2003 Red Hat, Inc.</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2003 CodeFactory AB</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensed under the Academic Free License version 2.1</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
<a name="l00010"></a>00010 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00011"></a>00011 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00012"></a>00012 <span class="comment"> * (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00017"></a>00017 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00020"></a>00020 <span class="comment"> * along with this program; if not, write to the Free Software</span>
<a name="l00021"></a>00021 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00022"></a>00022 <span class="comment"> *</span>
<a name="l00023"></a>00023 <span class="comment"> */</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include <config.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <string.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "dbus-internals.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "dbus-list.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "dbus-memory.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "dbus-protocol.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "dbus-shell.h"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "dbus-string.h"</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">/* Single quotes preserve the literal string exactly. escape</span>
<a name="l00035"></a>00035 <span class="comment"> * sequences are not allowed; not even \' - if you want a '</span>
<a name="l00036"></a>00036 <span class="comment"> * in the quoted text, you have to do something like 'foo'\''bar'</span>
<a name="l00037"></a>00037 <span class="comment"> *</span>
<a name="l00038"></a>00038 <span class="comment"> * Double quotes allow $ ` " \ and newline to be escaped with backslash.</span>
<a name="l00039"></a>00039 <span class="comment"> * Otherwise double quotes preserve things literally.</span>
<a name="l00040"></a>00040 <span class="comment"> */</span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">static</span> <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00043"></a>00043 unquote_string_inplace (<span class="keywordtype">char</span>* str, <span class="keywordtype">char</span>** end)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keywordtype">char</span>* dest;
<a name="l00046"></a>00046 <span class="keywordtype">char</span>* s;
<a name="l00047"></a>00047 <span class="keywordtype">char</span> quote_char;
<a name="l00048"></a>00048
<a name="l00049"></a>00049 dest = s = str;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 quote_char = *s;
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keywordflow">if</span> (!(*s == <span class="charliteral">'"'</span> || *s == <span class="charliteral">'\''</span>))
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 *end = str;
<a name="l00056"></a>00056 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="comment">/* Skip the initial quote mark */</span>
<a name="l00060"></a>00060 ++s;
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (quote_char == <span class="charliteral">'"'</span>)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="keywordflow">while</span> (*s)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 _dbus_assert(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keywordflow">switch</span> (*s)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<a name="l00071"></a>00071 <span class="comment">/* End of the string, return now */</span>
<a name="l00072"></a>00072 *dest = <span class="charliteral">'\0'</span>;
<a name="l00073"></a>00073 ++s;
<a name="l00074"></a>00074 *end = s;
<a name="l00075"></a>00075 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keywordflow">case</span> <span class="charliteral">'\\'</span>:
<a name="l00078"></a>00078 <span class="comment">/* Possible escaped quote or \ */</span>
<a name="l00079"></a>00079 ++s;
<a name="l00080"></a>00080 <span class="keywordflow">switch</span> (*s)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<a name="l00083"></a>00083 <span class="keywordflow">case</span> <span class="charliteral">'\\'</span>:
<a name="l00084"></a>00084 <span class="keywordflow">case</span> <span class="charliteral">'`'</span>:
<a name="l00085"></a>00085 <span class="keywordflow">case</span> <span class="charliteral">'$'</span>:
<a name="l00086"></a>00086 <span class="keywordflow">case</span> <span class="charliteral">'\n'</span>:
<a name="l00087"></a>00087 *dest = *s;
<a name="l00088"></a>00088 ++s;
<a name="l00089"></a>00089 ++dest;
<a name="l00090"></a>00090 <span class="keywordflow">break</span>;
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordflow">default</span>:
<a name="l00093"></a>00093 <span class="comment">/* not an escaped char */</span>
<a name="l00094"></a>00094 *dest = <span class="charliteral">'\\'</span>;
<a name="l00095"></a>00095 ++dest;
<a name="l00096"></a>00096 <span class="comment">/* ++s already done. */</span>
<a name="l00097"></a>00097 <span class="keywordflow">break</span>;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 <span class="keywordflow">break</span>;
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="keywordflow">default</span>:
<a name="l00102"></a>00102 *dest = *s;
<a name="l00103"></a>00103 ++dest;
<a name="l00104"></a>00104 ++s;
<a name="l00105"></a>00105 <span class="keywordflow">break</span>;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 _dbus_assert(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111 <span class="keywordflow">else</span>
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="keywordflow">while</span> (*s)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 _dbus_assert(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (*s == <span class="charliteral">'\''</span>)
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 <span class="comment">/* End of the string, return now */</span>
<a name="l00120"></a>00120 *dest = <span class="charliteral">'\0'</span>;
<a name="l00121"></a>00121 ++s;
<a name="l00122"></a>00122 *end = s;
<a name="l00123"></a>00123 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 <span class="keywordflow">else</span>
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 *dest = *s;
<a name="l00128"></a>00128 ++dest;
<a name="l00129"></a>00129 ++s;
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 _dbus_assert(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="comment">/* If we reach here this means the close quote was never encountered */</span>
<a name="l00137"></a>00137
<a name="l00138"></a>00138 *dest = <span class="charliteral">'\0'</span>;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 *end = s;
<a name="l00141"></a>00141 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00168"></a>00168 <span class="keywordtype">char</span>*
<a name="l00169"></a>00169 _dbus_shell_unquote (<span class="keyword">const</span> <span class="keywordtype">char</span> *quoted_string)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="keywordtype">char</span> *unquoted;
<a name="l00172"></a>00172 <span class="keywordtype">char</span> *end;
<a name="l00173"></a>00173 <span class="keywordtype">char</span> *start;
<a name="l00174"></a>00174 <span class="keywordtype">char</span> *ret;
<a name="l00175"></a>00175 <a class="code" href="structDBusString.html">DBusString</a> retval;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 unquoted = <a class="code" href="group__DBusInternalsUtils.html#ga9d00d77f6595b9d7ac1baf59d44bf58c" title="Duplicates a string.">_dbus_strdup</a> (quoted_string);
<a name="l00178"></a>00178 <span class="keywordflow">if</span> (unquoted == <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>)
<a name="l00179"></a>00179 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00180"></a>00180
<a name="l00181"></a>00181 start = unquoted;
<a name="l00182"></a>00182 end = unquoted;
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga348252317f7bb8ac43529972945830ae" title="Initializes a string.">_dbus_string_init</a> (&retval))
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a> (unquoted);
<a name="l00186"></a>00186 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="comment">/* The loop allows cases such as</span>
<a name="l00190"></a>00190 <span class="comment"> * "foo"blah blah'bar'woo foo"baz"la la la\'\''foo'</span>
<a name="l00191"></a>00191 <span class="comment"> */</span>
<a name="l00192"></a>00192 <span class="keywordflow">while</span> (*start)
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 <span class="comment">/* Append all non-quoted chars, honoring backslash escape</span>
<a name="l00195"></a>00195 <span class="comment"> */</span>
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordflow">while</span> (*start && !(*start == <span class="charliteral">'"'</span> || *start == <span class="charliteral">'\''</span>))
<a name="l00198"></a>00198 {
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (*start == <span class="charliteral">'\\'</span>)
<a name="l00200"></a>00200 {
<a name="l00201"></a>00201 <span class="comment">/* all characters can get escaped by backslash,</span>
<a name="l00202"></a>00202 <span class="comment"> * except newline, which is removed if it follows</span>
<a name="l00203"></a>00203 <span class="comment"> * a backslash outside of quotes</span>
<a name="l00204"></a>00204 <span class="comment"> */</span>
<a name="l00205"></a>00205
<a name="l00206"></a>00206 ++start;
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (*start)
<a name="l00208"></a>00208 {
<a name="l00209"></a>00209 <span class="keywordflow">if</span> (*start != <span class="charliteral">'\n'</span>)
<a name="l00210"></a>00210 {
<a name="l00211"></a>00211 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&retval, *start))
<a name="l00212"></a>00212 <span class="keywordflow">goto</span> error;
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214 ++start;
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217 <span class="keywordflow">else</span>
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&retval, *start))
<a name="l00220"></a>00220 <span class="keywordflow">goto</span> error;
<a name="l00221"></a>00221 ++start;
<a name="l00222"></a>00222 }
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224
<a name="l00225"></a>00225 <span class="keywordflow">if</span> (*start)
<a name="l00226"></a>00226 {
<a name="l00227"></a>00227 <span class="keywordflow">if</span> (!unquote_string_inplace (start, &end))
<a name="l00228"></a>00228 <span class="keywordflow">goto</span> error;
<a name="l00229"></a>00229 <span class="keywordflow">else</span>
<a name="l00230"></a>00230 {
<a name="l00231"></a>00231 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga100c5ce0696822c5a4cfbdfaba674d96" title="Appends a nul-terminated C-style string to a DBusString.">_dbus_string_append</a> (&retval, start))
<a name="l00232"></a>00232 <span class="keywordflow">goto</span> error;
<a name="l00233"></a>00233 start = end;
<a name="l00234"></a>00234 }
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237
<a name="l00238"></a>00238 ret = <a class="code" href="group__DBusInternalsUtils.html#ga9d00d77f6595b9d7ac1baf59d44bf58c" title="Duplicates a string.">_dbus_strdup</a> (<a class="code" href="group__DBusString.html#gaa9b5aa08d313048df72aa12bb4dc0cda" title="Gets the raw character buffer from the string.">_dbus_string_get_data</a> (&retval));
<a name="l00239"></a>00239 <span class="keywordflow">if</span> (!ret)
<a name="l00240"></a>00240 <span class="keywordflow">goto</span> error;
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a> (unquoted);
<a name="l00243"></a>00243 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&retval);
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordflow">return</span> ret;
<a name="l00246"></a>00246
<a name="l00247"></a>00247 error:
<a name="l00248"></a>00248 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a> (unquoted);
<a name="l00249"></a>00249 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&retval);
<a name="l00250"></a>00250 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00251"></a>00251 }
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <span class="comment">/* _dbus_shell_parse_argv() does a semi-arbitrary weird subset of the way</span>
<a name="l00254"></a>00254 <span class="comment"> * the shell parses a command line. We don't do variable expansion,</span>
<a name="l00255"></a>00255 <span class="comment"> * don't understand that operators are tokens, don't do tilde expansion,</span>
<a name="l00256"></a>00256 <span class="comment"> * don't do command substitution, no arithmetic expansion, IFS gets ignored,</span>
<a name="l00257"></a>00257 <span class="comment"> * don't do filename globs, don't remove redirection stuff, etc.</span>
<a name="l00258"></a>00258 <span class="comment"> *</span>
<a name="l00259"></a>00259 <span class="comment"> * READ THE UNIX98 SPEC on "Shell Command Language" before changing</span>
<a name="l00260"></a>00260 <span class="comment"> * the behavior of this code.</span>
<a name="l00261"></a>00261 <span class="comment"> *</span>
<a name="l00262"></a>00262 <span class="comment"> * Steps to parsing the argv string:</span>
<a name="l00263"></a>00263 <span class="comment"> *</span>
<a name="l00264"></a>00264 <span class="comment"> * - tokenize the string (but since we ignore operators,</span>
<a name="l00265"></a>00265 <span class="comment"> * our tokenization may diverge from what the shell would do)</span>
<a name="l00266"></a>00266 <span class="comment"> * note that tokenization ignores the internals of a quoted</span>
<a name="l00267"></a>00267 <span class="comment"> * word and it always splits on spaces, not on IFS even</span>
<a name="l00268"></a>00268 <span class="comment"> * if we used IFS. We also ignore "end of input indicator"</span>
<a name="l00269"></a>00269 <span class="comment"> * (I guess this is control-D?)</span>
<a name="l00270"></a>00270 <span class="comment"> *</span>
<a name="l00271"></a>00271 <span class="comment"> * Tokenization steps, from UNIX98 with operator stuff removed,</span>
<a name="l00272"></a>00272 <span class="comment"> * are:</span>
<a name="l00273"></a>00273 <span class="comment"> * </span>
<a name="l00274"></a>00274 <span class="comment"> * 1) "If the current character is backslash, single-quote or</span>
<a name="l00275"></a>00275 <span class="comment"> * double-quote (\, ' or ") and it is not quoted, it will affect</span>
<a name="l00276"></a>00276 <span class="comment"> * quoting for subsequent characters up to the end of the quoted</span>
<a name="l00277"></a>00277 <span class="comment"> * text. The rules for quoting are as described in Quoting</span>
<a name="l00278"></a>00278 <span class="comment"> * . During token recognition no substitutions will be actually</span>
<a name="l00279"></a>00279 <span class="comment"> * performed, and the result token will contain exactly the</span>
<a name="l00280"></a>00280 <span class="comment"> * characters that appear in the input (except for newline</span>
<a name="l00281"></a>00281 <span class="comment"> * character joining), unmodified, including any embedded or</span>
<a name="l00282"></a>00282 <span class="comment"> * enclosing quotes or substitution operators, between the quote</span>
<a name="l00283"></a>00283 <span class="comment"> * mark and the end of the quoted text. The token will not be</span>
<a name="l00284"></a>00284 <span class="comment"> * delimited by the end of the quoted field."</span>
<a name="l00285"></a>00285 <span class="comment"> *</span>
<a name="l00286"></a>00286 <span class="comment"> * 2) "If the current character is an unquoted newline character,</span>
<a name="l00287"></a>00287 <span class="comment"> * the current token will be delimited."</span>
<a name="l00288"></a>00288 <span class="comment"> *</span>
<a name="l00289"></a>00289 <span class="comment"> * 3) "If the current character is an unquoted blank character, any</span>
<a name="l00290"></a>00290 <span class="comment"> * token containing the previous character is delimited and the</span>
<a name="l00291"></a>00291 <span class="comment"> * current character will be discarded."</span>
<a name="l00292"></a>00292 <span class="comment"> *</span>
<a name="l00293"></a>00293 <span class="comment"> * 4) "If the previous character was part of a word, the current</span>
<a name="l00294"></a>00294 <span class="comment"> * character will be appended to that word."</span>
<a name="l00295"></a>00295 <span class="comment"> *</span>
<a name="l00296"></a>00296 <span class="comment"> * 5) "If the current character is a "#", it and all subsequent</span>
<a name="l00297"></a>00297 <span class="comment"> * characters up to, but excluding, the next newline character</span>
<a name="l00298"></a>00298 <span class="comment"> * will be discarded as a comment. The newline character that</span>
<a name="l00299"></a>00299 <span class="comment"> * ends the line is not considered part of the comment. The</span>
<a name="l00300"></a>00300 <span class="comment"> * "#" starts a comment only when it is at the beginning of a</span>
<a name="l00301"></a>00301 <span class="comment"> * token. Since the search for the end-of-comment does not</span>
<a name="l00302"></a>00302 <span class="comment"> * consider an escaped newline character specially, a comment</span>
<a name="l00303"></a>00303 <span class="comment"> * cannot be continued to the next line."</span>
<a name="l00304"></a>00304 <span class="comment"> *</span>
<a name="l00305"></a>00305 <span class="comment"> * 6) "The current character will be used as the start of a new word."</span>
<a name="l00306"></a>00306 <span class="comment"> *</span>
<a name="l00307"></a>00307 <span class="comment"> *</span>
<a name="l00308"></a>00308 <span class="comment"> * - for each token (word), perform portions of word expansion, namely</span>
<a name="l00309"></a>00309 <span class="comment"> * field splitting (using default whitespace IFS) and quote</span>
<a name="l00310"></a>00310 <span class="comment"> * removal. Field splitting may increase the number of words.</span>
<a name="l00311"></a>00311 <span class="comment"> * Quote removal does not increase the number of words.</span>
<a name="l00312"></a>00312 <span class="comment"> *</span>
<a name="l00313"></a>00313 <span class="comment"> * "If the complete expansion appropriate for a word results in an</span>
<a name="l00314"></a>00314 <span class="comment"> * empty field, that empty field will be deleted from the list of</span>
<a name="l00315"></a>00315 <span class="comment"> * fields that form the completely expanded command, unless the</span>
<a name="l00316"></a>00316 <span class="comment"> * original word contained single-quote or double-quote characters."</span>
<a name="l00317"></a>00317 <span class="comment"> * - UNIX98 spec</span>
<a name="l00318"></a>00318 <span class="comment"> *</span>
<a name="l00319"></a>00319 <span class="comment"> *</span>
<a name="l00320"></a>00320 <span class="comment"> */</span>
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="keyword">static</span> <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00323"></a>00323 delimit_token (<a class="code" href="structDBusString.html">DBusString</a> *token,
<a name="l00324"></a>00324 <a class="code" href="structDBusList.html" title="A node in a linked list.">DBusList</a> **retval,
<a name="l00325"></a>00325 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 <span class="keywordtype">char</span> *str;
<a name="l00328"></a>00328
<a name="l00329"></a>00329 str = <a class="code" href="group__DBusInternalsUtils.html#ga9d00d77f6595b9d7ac1baf59d44bf58c" title="Duplicates a string.">_dbus_strdup</a> (<a class="code" href="group__DBusString.html#gaa9b5aa08d313048df72aa12bb4dc0cda" title="Gets the raw character buffer from the string.">_dbus_string_get_data</a> (token));
<a name="l00330"></a>00330 <span class="keywordflow">if</span> (!str)
<a name="l00331"></a>00331 {
<a name="l00332"></a>00332 _DBUS_SET_OOM (error);
<a name="l00333"></a>00333 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00334"></a>00334 }
<a name="l00335"></a>00335
<a name="l00336"></a>00336 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusList.html#gad99045e79db46159babe69718f343053" title="Appends a value to the list.">_dbus_list_append</a> (retval, str))
<a name="l00337"></a>00337 {
<a name="l00338"></a>00338 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a> (str);
<a name="l00339"></a>00339 _DBUS_SET_OOM (error);
<a name="l00340"></a>00340 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00341"></a>00341 }
<a name="l00342"></a>00342
<a name="l00343"></a>00343 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345
<a name="l00346"></a>00346 <span class="keyword">static</span> <a class="code" href="structDBusList.html" title="A node in a linked list.">DBusList</a>*
<a name="l00347"></a>00347 tokenize_command_line (<span class="keyword">const</span> <span class="keywordtype">char</span> *command_line, <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00348"></a>00348 {
<a name="l00349"></a>00349 <span class="keywordtype">char</span> current_quote;
<a name="l00350"></a>00350 <span class="keyword">const</span> <span class="keywordtype">char</span> *p;
<a name="l00351"></a>00351 <a class="code" href="structDBusString.html">DBusString</a> current_token;
<a name="l00352"></a>00352 <a class="code" href="structDBusList.html" title="A node in a linked list.">DBusList</a> *retval = <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00353"></a>00353 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a> quoted;;
<a name="l00354"></a>00354
<a name="l00355"></a>00355 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00356"></a>00356 quoted = <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00357"></a>00357 p = command_line;
<a name="l00358"></a>00358
<a name="l00359"></a>00359 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga348252317f7bb8ac43529972945830ae" title="Initializes a string.">_dbus_string_init</a> (&current_token))
<a name="l00360"></a>00360 {
<a name="l00361"></a>00361 _DBUS_SET_OOM (error);
<a name="l00362"></a>00362 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00363"></a>00363 }
<a name="l00364"></a>00364
<a name="l00365"></a>00365 <span class="keywordflow">while</span> (*p)
<a name="l00366"></a>00366 {
<a name="l00367"></a>00367 <span class="keywordflow">if</span> (current_quote == <span class="charliteral">'\\'</span>)
<a name="l00368"></a>00368 {
<a name="l00369"></a>00369 <span class="keywordflow">if</span> (*p == <span class="charliteral">'\n'</span>)
<a name="l00370"></a>00370 {
<a name="l00371"></a>00371 <span class="comment">/* we append nothing; backslash-newline become nothing */</span>
<a name="l00372"></a>00372 }
<a name="l00373"></a>00373 <span class="keywordflow">else</span>
<a name="l00374"></a>00374 {
<a name="l00375"></a>00375 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&current_token, <span class="charliteral">'\\'</span>) ||
<a name="l00376"></a>00376 !<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00377"></a>00377 {
<a name="l00378"></a>00378 _DBUS_SET_OOM (error);
<a name="l00379"></a>00379 <span class="keywordflow">goto</span> error;
<a name="l00380"></a>00380 }
<a name="l00381"></a>00381 }
<a name="l00382"></a>00382
<a name="l00383"></a>00383 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (current_quote == <span class="charliteral">'#'</span>)
<a name="l00386"></a>00386 {
<a name="l00387"></a>00387 <span class="comment">/* Discard up to and including next newline */</span>
<a name="l00388"></a>00388 <span class="keywordflow">while</span> (*p && *p != <span class="charliteral">'\n'</span>)
<a name="l00389"></a>00389 ++p;
<a name="l00390"></a>00390
<a name="l00391"></a>00391 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00392"></a>00392
<a name="l00393"></a>00393 <span class="keywordflow">if</span> (*p == <span class="charliteral">'\0'</span>)
<a name="l00394"></a>00394 <span class="keywordflow">break</span>;
<a name="l00395"></a>00395 }
<a name="l00396"></a>00396 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (current_quote)
<a name="l00397"></a>00397 {
<a name="l00398"></a>00398 <span class="keywordflow">if</span> (*p == current_quote &&
<a name="l00399"></a>00399 <span class="comment">/* check that it isn't an escaped double quote */</span>
<a name="l00400"></a>00400 !(current_quote == <span class="charliteral">'"'</span> && quoted))
<a name="l00401"></a>00401 {
<a name="l00402"></a>00402 <span class="comment">/* close the quote */</span>
<a name="l00403"></a>00403 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00404"></a>00404 }
<a name="l00405"></a>00405
<a name="l00406"></a>00406 <span class="comment">/* Everything inside quotes, and the close quote,</span>
<a name="l00407"></a>00407 <span class="comment"> * gets appended literally.</span>
<a name="l00408"></a>00408 <span class="comment"> */</span>
<a name="l00409"></a>00409
<a name="l00410"></a>00410 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00411"></a>00411 {
<a name="l00412"></a>00412 _DBUS_SET_OOM (error);
<a name="l00413"></a>00413 <span class="keywordflow">goto</span> error;
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415 }
<a name="l00416"></a>00416 <span class="keywordflow">else</span>
<a name="l00417"></a>00417 {
<a name="l00418"></a>00418 <span class="keywordflow">switch</span> (*p)
<a name="l00419"></a>00419 {
<a name="l00420"></a>00420 <span class="keywordflow">case</span> <span class="charliteral">'\n'</span>:
<a name="l00421"></a>00421 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00422"></a>00422 <span class="keywordflow">goto</span> error;
<a name="l00423"></a>00423
<a name="l00424"></a>00424 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&current_token);
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga348252317f7bb8ac43529972945830ae" title="Initializes a string.">_dbus_string_init</a> (&current_token))
<a name="l00427"></a>00427 {
<a name="l00428"></a>00428 _DBUS_SET_OOM (error);
<a name="l00429"></a>00429 <span class="keywordflow">goto</span> init_error;
<a name="l00430"></a>00430 }
<a name="l00431"></a>00431
<a name="l00432"></a>00432 <span class="keywordflow">break</span>;
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keywordflow">case</span> <span class="charliteral">' '</span>:
<a name="l00435"></a>00435 <span class="keywordflow">case</span> <span class="charliteral">'\t'</span>:
<a name="l00436"></a>00436 <span class="comment">/* If the current token contains the previous char, delimit</span>
<a name="l00437"></a>00437 <span class="comment"> * the current token. A nonzero length</span>
<a name="l00438"></a>00438 <span class="comment"> * token should always contain the previous char.</span>
<a name="l00439"></a>00439 <span class="comment"> */</span>
<a name="l00440"></a>00440 <span class="keywordflow">if</span> (<a class="code" href="group__DBusString.html#gaa5136e6fd2c5188f4b88de7863369c6d" title="Gets the length of a string (not including nul termination).">_dbus_string_get_length</a> (&current_token) > 0)
<a name="l00441"></a>00441 {
<a name="l00442"></a>00442 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00443"></a>00443 <span class="keywordflow">goto</span> error;
<a name="l00444"></a>00444
<a name="l00445"></a>00445 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&current_token);
<a name="l00446"></a>00446
<a name="l00447"></a>00447 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga348252317f7bb8ac43529972945830ae" title="Initializes a string.">_dbus_string_init</a> (&current_token))
<a name="l00448"></a>00448 {
<a name="l00449"></a>00449 _DBUS_SET_OOM (error);
<a name="l00450"></a>00450 <span class="keywordflow">goto</span> init_error;
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <span class="comment">/* discard all unquoted blanks (don't add them to a token) */</span>
<a name="l00456"></a>00456 <span class="keywordflow">break</span>;
<a name="l00457"></a>00457
<a name="l00458"></a>00458
<a name="l00459"></a>00459 <span class="comment">/* single/double quotes are appended to the token,</span>
<a name="l00460"></a>00460 <span class="comment"> * escapes are maybe appended next time through the loop,</span>
<a name="l00461"></a>00461 <span class="comment"> * comment chars are never appended.</span>
<a name="l00462"></a>00462 <span class="comment"> */</span>
<a name="l00463"></a>00463
<a name="l00464"></a>00464 <span class="keywordflow">case</span> <span class="charliteral">'\''</span>:
<a name="l00465"></a>00465 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<a name="l00466"></a>00466 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00467"></a>00467 {
<a name="l00468"></a>00468 _DBUS_SET_OOM (error);
<a name="l00469"></a>00469 <span class="keywordflow">goto</span> error;
<a name="l00470"></a>00470 }
<a name="l00471"></a>00471
<a name="l00472"></a>00472 <span class="comment">/* FALL THRU */</span>
<a name="l00473"></a>00473
<a name="l00474"></a>00474 <span class="keywordflow">case</span> <span class="charliteral">'#'</span>:
<a name="l00475"></a>00475 <span class="keywordflow">case</span> <span class="charliteral">'\\'</span>:
<a name="l00476"></a>00476 current_quote = *p;
<a name="l00477"></a>00477 <span class="keywordflow">break</span>;
<a name="l00478"></a>00478
<a name="l00479"></a>00479 <span class="keywordflow">default</span>:
<a name="l00480"></a>00480 <span class="comment">/* Combines rules 4) and 6) - if we have a token, append to it,</span>
<a name="l00481"></a>00481 <span class="comment"> * otherwise create a new token.</span>
<a name="l00482"></a>00482 <span class="comment"> */</span>
<a name="l00483"></a>00483 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#gaa6ecf36e70263659f921a4ef0335db12" title="Appends a single byte to the string, returning FALSE if not enough memory.">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00484"></a>00484 {
<a name="l00485"></a>00485 _DBUS_SET_OOM (error);
<a name="l00486"></a>00486 <span class="keywordflow">goto</span> error;
<a name="l00487"></a>00487 }
<a name="l00488"></a>00488 <span class="keywordflow">break</span>;
<a name="l00489"></a>00489 }
<a name="l00490"></a>00490 }
<a name="l00491"></a>00491
<a name="l00492"></a>00492 <span class="comment">/* We need to count consecutive backslashes mod 2, </span>
<a name="l00493"></a>00493 <span class="comment"> * to detect escaped doublequotes.</span>
<a name="l00494"></a>00494 <span class="comment"> */</span>
<a name="l00495"></a>00495 <span class="keywordflow">if</span> (*p != <span class="charliteral">'\\'</span>)
<a name="l00496"></a>00496 quoted = <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00497"></a>00497 <span class="keywordflow">else</span>
<a name="l00498"></a>00498 quoted = !quoted;
<a name="l00499"></a>00499
<a name="l00500"></a>00500 ++p;
<a name="l00501"></a>00501 }
<a name="l00502"></a>00502
<a name="l00503"></a>00503 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00504"></a>00504 <span class="keywordflow">goto</span> error;
<a name="l00505"></a>00505
<a name="l00506"></a>00506 <span class="keywordflow">if</span> (current_quote)
<a name="l00507"></a>00507 {
<a name="l00508"></a>00508 <a class="code" href="group__DBusErrors.html#ga3cc15cc37bcd3aaca87aa4d791c124f5" title="Assigns an error name and message to a DBusError.">dbus_set_error_const</a> (error, <a class="code" href="group__DBusProtocol.html#gacf5321b161193ad66d5bdf5c910a9792" title="Invalid arguments passed to a method call.">DBUS_ERROR_INVALID_ARGS</a>, <span class="stringliteral">"Unclosed quotes in command line"</span>);
<a name="l00509"></a>00509 <span class="keywordflow">goto</span> error;
<a name="l00510"></a>00510 }
<a name="l00511"></a>00511
<a name="l00512"></a>00512 <span class="keywordflow">if</span> (retval == <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>)
<a name="l00513"></a>00513 {
<a name="l00514"></a>00514 <a class="code" href="group__DBusErrors.html#ga3cc15cc37bcd3aaca87aa4d791c124f5" title="Assigns an error name and message to a DBusError.">dbus_set_error_const</a> (error, <a class="code" href="group__DBusProtocol.html#gacf5321b161193ad66d5bdf5c910a9792" title="Invalid arguments passed to a method call.">DBUS_ERROR_INVALID_ARGS</a>, <span class="stringliteral">"No tokens found in command line"</span>);
<a name="l00515"></a>00515 <span class="keywordflow">goto</span> error;
<a name="l00516"></a>00516 }
<a name="l00517"></a>00517
<a name="l00518"></a>00518 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&current_token);
<a name="l00519"></a>00519
<a name="l00520"></a>00520 <span class="keywordflow">return</span> retval;
<a name="l00521"></a>00521
<a name="l00522"></a>00522 error:
<a name="l00523"></a>00523 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&current_token);
<a name="l00524"></a>00524
<a name="l00525"></a>00525 init_error:
<a name="l00526"></a>00526 <span class="keywordflow">if</span> (retval)
<a name="l00527"></a>00527 {
<a name="l00528"></a>00528 <a class="code" href="group__DBusList.html#ga8dd69084b53361803a765e6d53d5b9d1" title="Calls the given function for each element in the list.">_dbus_list_foreach</a> (&retval, (DBusForeachFunction) <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00529"></a>00529 <a class="code" href="group__DBusList.html#gaa36d13444a050a923941c53650b72f9d" title="Frees all links in the list and sets the list head to NULL.">_dbus_list_clear</a> (&retval);
<a name="l00530"></a>00530 }
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00533"></a>00533 }
<a name="l00534"></a>00534
<a name="l00552"></a>00552 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00553"></a>00553 _dbus_shell_parse_argv (<span class="keyword">const</span> <span class="keywordtype">char</span> *command_line,
<a name="l00554"></a>00554 <span class="keywordtype">int</span> *argcp,
<a name="l00555"></a>00555 <span class="keywordtype">char</span> ***argvp,
<a name="l00556"></a>00556 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00557"></a>00557 {
<a name="l00558"></a>00558 <span class="comment">/* Code based on poptParseArgvString() from libpopt */</span>
<a name="l00559"></a>00559 <span class="keywordtype">int</span> argc = 0;
<a name="l00560"></a>00560 <span class="keywordtype">char</span> **argv = <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00561"></a>00561 <a class="code" href="structDBusList.html" title="A node in a linked list.">DBusList</a> *tokens = <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00562"></a>00562 <span class="keywordtype">int</span> i;
<a name="l00563"></a>00563 <a class="code" href="structDBusList.html" title="A node in a linked list.">DBusList</a> *tmp_list;
<a name="l00564"></a>00564
<a name="l00565"></a>00565 <span class="keywordflow">if</span> (!command_line)
<a name="l00566"></a>00566 {
<a name="l00567"></a>00567 _dbus_verbose (<span class="stringliteral">"Command line is NULL\n"</span>);
<a name="l00568"></a>00568 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00569"></a>00569 }
<a name="l00570"></a>00570
<a name="l00571"></a>00571 tokens = tokenize_command_line (command_line, error);
<a name="l00572"></a>00572 <span class="keywordflow">if</span> (tokens == <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>)
<a name="l00573"></a>00573 {
<a name="l00574"></a>00574 _dbus_verbose (<span class="stringliteral">"No tokens for command line '%s'\n"</span>, command_line);
<a name="l00575"></a>00575 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00576"></a>00576 }
<a name="l00577"></a>00577
<a name="l00578"></a>00578 <span class="comment">/* Because we can't have introduced any new blank space into the</span>
<a name="l00579"></a>00579 <span class="comment"> * tokens (we didn't do any new expansions), we don't need to</span>
<a name="l00580"></a>00580 <span class="comment"> * perform field splitting. If we were going to honor IFS or do any</span>
<a name="l00581"></a>00581 <span class="comment"> * expansions, we would have to do field splitting on each word</span>
<a name="l00582"></a>00582 <span class="comment"> * here. Also, if we were going to do any expansion we would need to</span>
<a name="l00583"></a>00583 <span class="comment"> * remove any zero-length words that didn't contain quotes</span>
<a name="l00584"></a>00584 <span class="comment"> * originally; but since there's no expansion we know all words have</span>
<a name="l00585"></a>00585 <span class="comment"> * nonzero length, unless they contain quotes.</span>
<a name="l00586"></a>00586 <span class="comment"> * </span>
<a name="l00587"></a>00587 <span class="comment"> * So, we simply remove quotes, and don't do any field splitting or</span>
<a name="l00588"></a>00588 <span class="comment"> * empty word removal, since we know there was no way to introduce</span>
<a name="l00589"></a>00589 <span class="comment"> * such things.</span>
<a name="l00590"></a>00590 <span class="comment"> */</span>
<a name="l00591"></a>00591
<a name="l00592"></a>00592 argc = <a class="code" href="group__DBusList.html#gaa2144a5489bb35b16b2b671488ad597c" title="Gets the length of a list.">_dbus_list_get_length</a> (&tokens);
<a name="l00593"></a>00593 argv = <a class="code" href="group__DBusMemory.html#ga54ccb556e7964112a825a7f46c156ca0" title="Safe macro for using dbus_malloc().">dbus_new</a> (<span class="keywordtype">char</span> *, argc + 1);
<a name="l00594"></a>00594 <span class="keywordflow">if</span> (!argv)
<a name="l00595"></a>00595 {
<a name="l00596"></a>00596 _DBUS_SET_OOM (error);
<a name="l00597"></a>00597 <span class="keywordflow">goto</span> error;
<a name="l00598"></a>00598 }
<a name="l00599"></a>00599
<a name="l00600"></a>00600 i = 0;
<a name="l00601"></a>00601 tmp_list = tokens;
<a name="l00602"></a>00602 <span class="keywordflow">while</span> (tmp_list)
<a name="l00603"></a>00603 {
<a name="l00604"></a>00604 argv[i] = _dbus_shell_unquote (tmp_list-><a class="code" href="structDBusList.html#a29ab457bcf9092252bb0c4282c727055" title="Data stored at this element.">data</a>);
<a name="l00605"></a>00605
<a name="l00606"></a>00606 <span class="keywordflow">if</span> (!argv[i])
<a name="l00607"></a>00607 {
<a name="l00608"></a>00608 <span class="keywordtype">int</span> j;
<a name="l00609"></a>00609 <span class="keywordflow">for</span> (j = 0; j < i; j++)
<a name="l00610"></a>00610 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a>(argv[j]);
<a name="l00611"></a>00611
<a name="l00612"></a>00612 <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a> (argv);
<a name="l00613"></a>00613 _DBUS_SET_OOM (error);
<a name="l00614"></a>00614 <span class="keywordflow">goto</span> error;
<a name="l00615"></a>00615 }
<a name="l00616"></a>00616
<a name="l00617"></a>00617 tmp_list = <a class="code" href="group__DBusList.html#gaede4ace46d5ee497d75074bfec4490a2" title="Gets the next link in the list, or NULL if there are no more links.">_dbus_list_get_next_link</a> (&tokens, tmp_list);
<a name="l00618"></a>00618 ++i;
<a name="l00619"></a>00619 }
<a name="l00620"></a>00620 argv[argc] = <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>;
<a name="l00621"></a>00621
<a name="l00622"></a>00622 <a class="code" href="group__DBusList.html#ga8dd69084b53361803a765e6d53d5b9d1" title="Calls the given function for each element in the list.">_dbus_list_foreach</a> (&tokens, (DBusForeachFunction) <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00623"></a>00623 <a class="code" href="group__DBusList.html#gaa36d13444a050a923941c53650b72f9d" title="Frees all links in the list and sets the list head to NULL.">_dbus_list_clear</a> (&tokens);
<a name="l00624"></a>00624
<a name="l00625"></a>00625 <span class="keywordflow">if</span> (argcp)
<a name="l00626"></a>00626 *argcp = argc;
<a name="l00627"></a>00627
<a name="l00628"></a>00628 <span class="keywordflow">if</span> (argvp)
<a name="l00629"></a>00629 *argvp = argv;
<a name="l00630"></a>00630 <span class="keywordflow">else</span>
<a name="l00631"></a>00631 <a class="code" href="group__DBusMemory.html#gac200b2dbc8b3f6ecac4d42426fb97b40" title="Frees a NULL-terminated array of strings.">dbus_free_string_array</a> (argv);
<a name="l00632"></a>00632
<a name="l00633"></a>00633 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00634"></a>00634
<a name="l00635"></a>00635 error:
<a name="l00636"></a>00636 <a class="code" href="group__DBusList.html#ga8dd69084b53361803a765e6d53d5b9d1" title="Calls the given function for each element in the list.">_dbus_list_foreach</a> (&tokens, (DBusForeachFunction) <a class="code" href="group__DBusMemory.html#ga34e666b19b015035a9a31e53da84b39a" title="Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().">dbus_free</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00637"></a>00637 <a class="code" href="group__DBusList.html#gaa36d13444a050a923941c53650b72f9d" title="Frees all links in the list and sets the list head to NULL.">_dbus_list_clear</a> (&tokens);
<a name="l00638"></a>00638
<a name="l00639"></a>00639 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00640"></a>00640
<a name="l00641"></a>00641 }
</pre></div></div><!-- contents -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu Mar 3 2016 17:50:31 for D-Bus by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.7.6.1
</small></address>
</body>
</html>