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<h1>dbus-shell.c</h1><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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <string.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "dbus-internals.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "dbus-list.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "dbus-memory.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "dbus-protocol.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "dbus-shell.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "dbus-string.h"</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">/* Single quotes preserve the literal string exactly. escape</span>
<a name="l00034"></a>00034 <span class="comment"> * sequences are not allowed; not even \' - if you want a '</span>
<a name="l00035"></a>00035 <span class="comment"> * in the quoted text, you have to do something like 'foo'\''bar'</span>
<a name="l00036"></a>00036 <span class="comment"> *</span>
<a name="l00037"></a>00037 <span class="comment"> * Double quotes allow $ ` " \ and newline to be escaped with backslash.</span>
<a name="l00038"></a>00038 <span class="comment"> * Otherwise double quotes preserve things literally.</span>
<a name="l00039"></a>00039 <span class="comment"> */</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keyword">static</span> <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a>
<a name="l00042"></a>00042 unquote_string_inplace (<span class="keywordtype">char</span>* str, <span class="keywordtype">char</span>** end)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keywordtype">char</span>* dest;
<a name="l00045"></a>00045 <span class="keywordtype">char</span>* s;
<a name="l00046"></a>00046 <span class="keywordtype">char</span> quote_char;
<a name="l00047"></a>00047
<a name="l00048"></a>00048 dest = s = str;
<a name="l00049"></a>00049
<a name="l00050"></a>00050 quote_char = *s;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keywordflow">if</span> (!(*s == <span class="charliteral">'"'</span> || *s == <span class="charliteral">'\''</span>))
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 *end = str;
<a name="l00055"></a>00055 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">/* Skip the initial quote mark */</span>
<a name="l00059"></a>00059 ++s;
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (quote_char == <span class="charliteral">'"'</span>)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keywordflow">while</span> (*s)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a>(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keywordflow">switch</span> (*s)
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<a name="l00070"></a>00070 <span class="comment">/* End of the string, return now */</span>
<a name="l00071"></a>00071 *dest = <span class="charliteral">'\0'</span>;
<a name="l00072"></a>00072 ++s;
<a name="l00073"></a>00073 *end = s;
<a name="l00074"></a>00074 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keywordflow">case</span> <span class="charliteral">'\\'</span>:
<a name="l00077"></a>00077 <span class="comment">/* Possible escaped quote or \ */</span>
<a name="l00078"></a>00078 ++s;
<a name="l00079"></a>00079 <span class="keywordflow">switch</span> (*s)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<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">'\n'</span>:
<a name="l00086"></a>00086 *dest = *s;
<a name="l00087"></a>00087 ++s;
<a name="l00088"></a>00088 ++dest;
<a name="l00089"></a>00089 <span class="keywordflow">break</span>;
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keywordflow">default</span>:
<a name="l00092"></a>00092 <span class="comment">/* not an escaped char */</span>
<a name="l00093"></a>00093 *dest = <span class="charliteral">'\\'</span>;
<a name="l00094"></a>00094 ++dest;
<a name="l00095"></a>00095 <span class="comment">/* ++s already done. */</span>
<a name="l00096"></a>00096 <span class="keywordflow">break</span>;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 <span class="keywordflow">break</span>;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">default</span>:
<a name="l00101"></a>00101 *dest = *s;
<a name="l00102"></a>00102 ++dest;
<a name="l00103"></a>00103 ++s;
<a name="l00104"></a>00104 <span class="keywordflow">break</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a>(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 <span class="keywordflow">else</span>
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keywordflow">while</span> (*s)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a>(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (*s == <span class="charliteral">'\''</span>)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="comment">/* End of the string, return now */</span>
<a name="l00119"></a>00119 *dest = <span class="charliteral">'\0'</span>;
<a name="l00120"></a>00120 ++s;
<a name="l00121"></a>00121 *end = s;
<a name="l00122"></a>00122 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>;
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124 <span class="keywordflow">else</span>
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 *dest = *s;
<a name="l00127"></a>00127 ++dest;
<a name="l00128"></a>00128 ++s;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a>(s > dest); <span class="comment">/* loop invariant */</span>
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="comment">/* If we reach here this means the close quote was never encountered */</span>
<a name="l00136"></a>00136
<a name="l00137"></a>00137 *dest = <span class="charliteral">'\0'</span>;
<a name="l00138"></a>00138
<a name="l00139"></a>00139 *end = s;
<a name="l00140"></a>00140 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00153"></a>00153 <span class="keywordtype">char</span>*
<a name="l00154"></a>00154 _dbus_shell_quote (<span class="keyword">const</span> <span class="keywordtype">char</span> *unquoted_string)
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156 <span class="comment">/* We always use single quotes, because the algorithm is cheesier.</span>
<a name="l00157"></a>00157 <span class="comment"> * We could use double if we felt like it, that might be more</span>
<a name="l00158"></a>00158 <span class="comment"> * human-readable.</span>
<a name="l00159"></a>00159 <span class="comment"> */</span>
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="keyword">const</span> <span class="keywordtype">char</span> *p;
<a name="l00162"></a>00162 <span class="keywordtype">char</span> *ret;
<a name="l00163"></a>00163 <a class="code" href="structDBusString.html">DBusString</a> dest;
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <a class="code" href="group__DBusString.html#g348252317f7bb8ac43529972945830ae">_dbus_string_init</a> (&dest);
<a name="l00166"></a>00166
<a name="l00167"></a>00167 p = unquoted_string;
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">/* could speed this up a lot by appending chunks of text at a</span>
<a name="l00170"></a>00170 <span class="comment"> * time.</span>
<a name="l00171"></a>00171 <span class="comment"> */</span>
<a name="l00172"></a>00172 <span class="keywordflow">while</span> (*p)
<a name="l00173"></a>00173 {
<a name="l00174"></a>00174 <span class="comment">/* Replace literal ' with a close ', a \', and a open ' */</span>
<a name="l00175"></a>00175 <span class="keywordflow">if</span> (*p == <span class="charliteral">'\''</span>)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g100c5ce0696822c5a4cfbdfaba674d96">_dbus_string_append</a> (&dest, <span class="stringliteral">"'\\''"</span>))
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&dest);
<a name="l00180"></a>00180 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 <span class="keywordflow">else</span>
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&dest, *p))
<a name="l00186"></a>00186 {
<a name="l00187"></a>00187 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&dest);
<a name="l00188"></a>00188 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a>00192 ++p;
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="comment">/* close the quote */</span>
<a name="l00196"></a>00196 <span class="keywordflow">if</span> (<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&dest, <span class="charliteral">'\''</span>))
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 ret = <a class="code" href="group__DBusInternalsUtils.html#g9d00d77f6595b9d7ac1baf59d44bf58c">_dbus_strdup</a> (_dbus_string_get_data (&dest));
<a name="l00199"></a>00199 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&dest);
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="keywordflow">return</span> ret;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&dest);
<a name="l00205"></a>00205
<a name="l00206"></a>00206 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00233"></a>00233 <span class="keywordtype">char</span>*
<a name="l00234"></a>00234 _dbus_shell_unquote (<span class="keyword">const</span> <span class="keywordtype">char</span> *quoted_string)
<a name="l00235"></a>00235 {
<a name="l00236"></a>00236 <span class="keywordtype">char</span> *unquoted;
<a name="l00237"></a>00237 <span class="keywordtype">char</span> *end;
<a name="l00238"></a>00238 <span class="keywordtype">char</span> *start;
<a name="l00239"></a>00239 <span class="keywordtype">char</span> *ret;
<a name="l00240"></a>00240 <a class="code" href="structDBusString.html">DBusString</a> retval;
<a name="l00241"></a>00241
<a name="l00242"></a>00242 unquoted = <a class="code" href="group__DBusInternalsUtils.html#g9d00d77f6595b9d7ac1baf59d44bf58c">_dbus_strdup</a> (quoted_string);
<a name="l00243"></a>00243 <span class="keywordflow">if</span> (unquoted == <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00244"></a>00244 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00245"></a>00245
<a name="l00246"></a>00246 start = unquoted;
<a name="l00247"></a>00247 end = unquoted;
<a name="l00248"></a>00248 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g348252317f7bb8ac43529972945830ae">_dbus_string_init</a> (&retval))
<a name="l00249"></a>00249 {
<a name="l00250"></a>00250 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (unquoted);
<a name="l00251"></a>00251 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="comment">/* The loop allows cases such as</span>
<a name="l00255"></a>00255 <span class="comment"> * "foo"blah blah'bar'woo foo"baz"la la la\'\''foo'</span>
<a name="l00256"></a>00256 <span class="comment"> */</span>
<a name="l00257"></a>00257 <span class="keywordflow">while</span> (*start)
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 <span class="comment">/* Append all non-quoted chars, honoring backslash escape</span>
<a name="l00260"></a>00260 <span class="comment"> */</span>
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <span class="keywordflow">while</span> (*start && !(*start == <span class="charliteral">'"'</span> || *start == <span class="charliteral">'\''</span>))
<a name="l00263"></a>00263 {
<a name="l00264"></a>00264 <span class="keywordflow">if</span> (*start == <span class="charliteral">'\\'</span>)
<a name="l00265"></a>00265 {
<a name="l00266"></a>00266 <span class="comment">/* all characters can get escaped by backslash,</span>
<a name="l00267"></a>00267 <span class="comment"> * except newline, which is removed if it follows</span>
<a name="l00268"></a>00268 <span class="comment"> * a backslash outside of quotes</span>
<a name="l00269"></a>00269 <span class="comment"> */</span>
<a name="l00270"></a>00270
<a name="l00271"></a>00271 ++start;
<a name="l00272"></a>00272 <span class="keywordflow">if</span> (*start)
<a name="l00273"></a>00273 {
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (*start != <span class="charliteral">'\n'</span>)
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&retval, *start))
<a name="l00277"></a>00277 <span class="keywordflow">goto</span> error;
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279 ++start;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282 <span class="keywordflow">else</span>
<a name="l00283"></a>00283 {
<a name="l00284"></a>00284 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&retval, *start))
<a name="l00285"></a>00285 <span class="keywordflow">goto</span> error;
<a name="l00286"></a>00286 ++start;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288 }
<a name="l00289"></a>00289
<a name="l00290"></a>00290 <span class="keywordflow">if</span> (*start)
<a name="l00291"></a>00291 {
<a name="l00292"></a>00292 <span class="keywordflow">if</span> (!unquote_string_inplace (start, &end))
<a name="l00293"></a>00293 <span class="keywordflow">goto</span> error;
<a name="l00294"></a>00294 <span class="keywordflow">else</span>
<a name="l00295"></a>00295 {
<a name="l00296"></a>00296 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g100c5ce0696822c5a4cfbdfaba674d96">_dbus_string_append</a> (&retval, start))
<a name="l00297"></a>00297 <span class="keywordflow">goto</span> error;
<a name="l00298"></a>00298 start = end;
<a name="l00299"></a>00299 }
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302
<a name="l00303"></a>00303 ret = <a class="code" href="group__DBusInternalsUtils.html#g9d00d77f6595b9d7ac1baf59d44bf58c">_dbus_strdup</a> (_dbus_string_get_data (&retval));
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (!ret)
<a name="l00305"></a>00305 <span class="keywordflow">goto</span> error;
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (unquoted);
<a name="l00308"></a>00308 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&retval);
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordflow">return</span> ret;
<a name="l00311"></a>00311
<a name="l00312"></a>00312 error:
<a name="l00313"></a>00313 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (unquoted);
<a name="l00314"></a>00314 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&retval);
<a name="l00315"></a>00315 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00316"></a>00316 }
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="comment">/* _dbus_shell_parse_argv() does a semi-arbitrary weird subset of the way</span>
<a name="l00319"></a>00319 <span class="comment"> * the shell parses a command line. We don't do variable expansion,</span>
<a name="l00320"></a>00320 <span class="comment"> * don't understand that operators are tokens, don't do tilde expansion,</span>
<a name="l00321"></a>00321 <span class="comment"> * don't do command substitution, no arithmetic expansion, IFS gets ignored,</span>
<a name="l00322"></a>00322 <span class="comment"> * don't do filename globs, don't remove redirection stuff, etc.</span>
<a name="l00323"></a>00323 <span class="comment"> *</span>
<a name="l00324"></a>00324 <span class="comment"> * READ THE UNIX98 SPEC on "Shell Command Language" before changing</span>
<a name="l00325"></a>00325 <span class="comment"> * the behavior of this code.</span>
<a name="l00326"></a>00326 <span class="comment"> *</span>
<a name="l00327"></a>00327 <span class="comment"> * Steps to parsing the argv string:</span>
<a name="l00328"></a>00328 <span class="comment"> *</span>
<a name="l00329"></a>00329 <span class="comment"> * - tokenize the string (but since we ignore operators,</span>
<a name="l00330"></a>00330 <span class="comment"> * our tokenization may diverge from what the shell would do)</span>
<a name="l00331"></a>00331 <span class="comment"> * note that tokenization ignores the internals of a quoted</span>
<a name="l00332"></a>00332 <span class="comment"> * word and it always splits on spaces, not on IFS even</span>
<a name="l00333"></a>00333 <span class="comment"> * if we used IFS. We also ignore "end of input indicator"</span>
<a name="l00334"></a>00334 <span class="comment"> * (I guess this is control-D?)</span>
<a name="l00335"></a>00335 <span class="comment"> *</span>
<a name="l00336"></a>00336 <span class="comment"> * Tokenization steps, from UNIX98 with operator stuff removed,</span>
<a name="l00337"></a>00337 <span class="comment"> * are:</span>
<a name="l00338"></a>00338 <span class="comment"> * </span>
<a name="l00339"></a>00339 <span class="comment"> * 1) "If the current character is backslash, single-quote or</span>
<a name="l00340"></a>00340 <span class="comment"> * double-quote (\, ' or ") and it is not quoted, it will affect</span>
<a name="l00341"></a>00341 <span class="comment"> * quoting for subsequent characters up to the end of the quoted</span>
<a name="l00342"></a>00342 <span class="comment"> * text. The rules for quoting are as described in Quoting</span>
<a name="l00343"></a>00343 <span class="comment"> * . During token recognition no substitutions will be actually</span>
<a name="l00344"></a>00344 <span class="comment"> * performed, and the result token will contain exactly the</span>
<a name="l00345"></a>00345 <span class="comment"> * characters that appear in the input (except for newline</span>
<a name="l00346"></a>00346 <span class="comment"> * character joining), unmodified, including any embedded or</span>
<a name="l00347"></a>00347 <span class="comment"> * enclosing quotes or substitution operators, between the quote</span>
<a name="l00348"></a>00348 <span class="comment"> * mark and the end of the quoted text. The token will not be</span>
<a name="l00349"></a>00349 <span class="comment"> * delimited by the end of the quoted field."</span>
<a name="l00350"></a>00350 <span class="comment"> *</span>
<a name="l00351"></a>00351 <span class="comment"> * 2) "If the current character is an unquoted newline character,</span>
<a name="l00352"></a>00352 <span class="comment"> * the current token will be delimited."</span>
<a name="l00353"></a>00353 <span class="comment"> *</span>
<a name="l00354"></a>00354 <span class="comment"> * 3) "If the current character is an unquoted blank character, any</span>
<a name="l00355"></a>00355 <span class="comment"> * token containing the previous character is delimited and the</span>
<a name="l00356"></a>00356 <span class="comment"> * current character will be discarded."</span>
<a name="l00357"></a>00357 <span class="comment"> *</span>
<a name="l00358"></a>00358 <span class="comment"> * 4) "If the previous character was part of a word, the current</span>
<a name="l00359"></a>00359 <span class="comment"> * character will be appended to that word."</span>
<a name="l00360"></a>00360 <span class="comment"> *</span>
<a name="l00361"></a>00361 <span class="comment"> * 5) "If the current character is a "#", it and all subsequent</span>
<a name="l00362"></a>00362 <span class="comment"> * characters up to, but excluding, the next newline character</span>
<a name="l00363"></a>00363 <span class="comment"> * will be discarded as a comment. The newline character that</span>
<a name="l00364"></a>00364 <span class="comment"> * ends the line is not considered part of the comment. The</span>
<a name="l00365"></a>00365 <span class="comment"> * "#" starts a comment only when it is at the beginning of a</span>
<a name="l00366"></a>00366 <span class="comment"> * token. Since the search for the end-of-comment does not</span>
<a name="l00367"></a>00367 <span class="comment"> * consider an escaped newline character specially, a comment</span>
<a name="l00368"></a>00368 <span class="comment"> * cannot be continued to the next line."</span>
<a name="l00369"></a>00369 <span class="comment"> *</span>
<a name="l00370"></a>00370 <span class="comment"> * 6) "The current character will be used as the start of a new word."</span>
<a name="l00371"></a>00371 <span class="comment"> *</span>
<a name="l00372"></a>00372 <span class="comment"> *</span>
<a name="l00373"></a>00373 <span class="comment"> * - for each token (word), perform portions of word expansion, namely</span>
<a name="l00374"></a>00374 <span class="comment"> * field splitting (using default whitespace IFS) and quote</span>
<a name="l00375"></a>00375 <span class="comment"> * removal. Field splitting may increase the number of words.</span>
<a name="l00376"></a>00376 <span class="comment"> * Quote removal does not increase the number of words.</span>
<a name="l00377"></a>00377 <span class="comment"> *</span>
<a name="l00378"></a>00378 <span class="comment"> * "If the complete expansion appropriate for a word results in an</span>
<a name="l00379"></a>00379 <span class="comment"> * empty field, that empty field will be deleted from the list of</span>
<a name="l00380"></a>00380 <span class="comment"> * fields that form the completely expanded command, unless the</span>
<a name="l00381"></a>00381 <span class="comment"> * original word contained single-quote or double-quote characters."</span>
<a name="l00382"></a>00382 <span class="comment"> * - UNIX98 spec</span>
<a name="l00383"></a>00383 <span class="comment"> *</span>
<a name="l00384"></a>00384 <span class="comment"> *</span>
<a name="l00385"></a>00385 <span class="comment"> */</span>
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="keyword">static</span> <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a>
<a name="l00388"></a>00388 delimit_token (<a class="code" href="structDBusString.html">DBusString</a> *token,
<a name="l00389"></a>00389 <a class="code" href="structDBusList.html">DBusList</a> **retval,
<a name="l00390"></a>00390 <a class="code" href="structDBusError.html">DBusError</a> *error)
<a name="l00391"></a>00391 {
<a name="l00392"></a>00392 <span class="keywordtype">char</span> *str;
<a name="l00393"></a>00393
<a name="l00394"></a>00394 str = <a class="code" href="group__DBusInternalsUtils.html#g9d00d77f6595b9d7ac1baf59d44bf58c">_dbus_strdup</a> (_dbus_string_get_data (token));
<a name="l00395"></a>00395 <span class="keywordflow">if</span> (!str)
<a name="l00396"></a>00396 {
<a name="l00397"></a>00397 _DBUS_SET_OOM (error);
<a name="l00398"></a>00398 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00399"></a>00399 }
<a name="l00400"></a>00400
<a name="l00401"></a>00401 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusList.html#gd99045e79db46159babe69718f343053">_dbus_list_append</a> (retval, str))
<a name="l00402"></a>00402 {
<a name="l00403"></a>00403 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (str);
<a name="l00404"></a>00404 _DBUS_SET_OOM (error);
<a name="l00405"></a>00405 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>;
<a name="l00409"></a>00409 }
<a name="l00410"></a>00410
<a name="l00411"></a>00411 <span class="keyword">static</span> <a class="code" href="structDBusList.html">DBusList</a>*
<a name="l00412"></a>00412 tokenize_command_line (<span class="keyword">const</span> <span class="keywordtype">char</span> *command_line, <a class="code" href="structDBusError.html">DBusError</a> *error)
<a name="l00413"></a>00413 {
<a name="l00414"></a>00414 <span class="keywordtype">char</span> current_quote;
<a name="l00415"></a>00415 <span class="keyword">const</span> <span class="keywordtype">char</span> *p;
<a name="l00416"></a>00416 <a class="code" href="structDBusString.html">DBusString</a> current_token;
<a name="l00417"></a>00417 <a class="code" href="structDBusList.html">DBusList</a> *retval = <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00418"></a>00418 <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a> quoted;;
<a name="l00419"></a>00419
<a name="l00420"></a>00420 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00421"></a>00421 quoted = <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00422"></a>00422 p = command_line;
<a name="l00423"></a>00423
<a name="l00424"></a>00424 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g348252317f7bb8ac43529972945830ae">_dbus_string_init</a> (&current_token))
<a name="l00425"></a>00425 {
<a name="l00426"></a>00426 _DBUS_SET_OOM (error);
<a name="l00427"></a>00427 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00428"></a>00428 }
<a name="l00429"></a>00429
<a name="l00430"></a>00430 <span class="keywordflow">while</span> (*p)
<a name="l00431"></a>00431 {
<a name="l00432"></a>00432 <span class="keywordflow">if</span> (current_quote == <span class="charliteral">'\\'</span>)
<a name="l00433"></a>00433 {
<a name="l00434"></a>00434 <span class="keywordflow">if</span> (*p == <span class="charliteral">'\n'</span>)
<a name="l00435"></a>00435 {
<a name="l00436"></a>00436 <span class="comment">/* we append nothing; backslash-newline become nothing */</span>
<a name="l00437"></a>00437 }
<a name="l00438"></a>00438 <span class="keywordflow">else</span>
<a name="l00439"></a>00439 {
<a name="l00440"></a>00440 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&current_token, <span class="charliteral">'\\'</span>) ||
<a name="l00441"></a>00441 !<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00442"></a>00442 {
<a name="l00443"></a>00443 _DBUS_SET_OOM (error);
<a name="l00444"></a>00444 <span class="keywordflow">goto</span> error;
<a name="l00445"></a>00445 }
<a name="l00446"></a>00446 }
<a name="l00447"></a>00447
<a name="l00448"></a>00448 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00449"></a>00449 }
<a name="l00450"></a>00450 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (current_quote == <span class="charliteral">'#'</span>)
<a name="l00451"></a>00451 {
<a name="l00452"></a>00452 <span class="comment">/* Discard up to and including next newline */</span>
<a name="l00453"></a>00453 <span class="keywordflow">while</span> (*p && *p != <span class="charliteral">'\n'</span>)
<a name="l00454"></a>00454 ++p;
<a name="l00455"></a>00455
<a name="l00456"></a>00456 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keywordflow">if</span> (*p == <span class="charliteral">'\0'</span>)
<a name="l00459"></a>00459 <span class="keywordflow">break</span>;
<a name="l00460"></a>00460 }
<a name="l00461"></a>00461 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (current_quote)
<a name="l00462"></a>00462 {
<a name="l00463"></a>00463 <span class="keywordflow">if</span> (*p == current_quote &&
<a name="l00464"></a>00464 <span class="comment">/* check that it isn't an escaped double quote */</span>
<a name="l00465"></a>00465 !(current_quote == <span class="charliteral">'"'</span> && quoted))
<a name="l00466"></a>00466 {
<a name="l00467"></a>00467 <span class="comment">/* close the quote */</span>
<a name="l00468"></a>00468 current_quote = <span class="charliteral">'\0'</span>;
<a name="l00469"></a>00469 }
<a name="l00470"></a>00470
<a name="l00471"></a>00471 <span class="comment">/* Everything inside quotes, and the close quote,</span>
<a name="l00472"></a>00472 <span class="comment"> * gets appended literally.</span>
<a name="l00473"></a>00473 <span class="comment"> */</span>
<a name="l00474"></a>00474
<a name="l00475"></a>00475 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00476"></a>00476 {
<a name="l00477"></a>00477 _DBUS_SET_OOM (error);
<a name="l00478"></a>00478 <span class="keywordflow">goto</span> error;
<a name="l00479"></a>00479 }
<a name="l00480"></a>00480 }
<a name="l00481"></a>00481 <span class="keywordflow">else</span>
<a name="l00482"></a>00482 {
<a name="l00483"></a>00483 <span class="keywordflow">switch</span> (*p)
<a name="l00484"></a>00484 {
<a name="l00485"></a>00485 <span class="keywordflow">case</span> <span class="charliteral">'\n'</span>:
<a name="l00486"></a>00486 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00487"></a>00487 <span class="keywordflow">goto</span> error;
<a name="l00488"></a>00488
<a name="l00489"></a>00489 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&current_token);
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g348252317f7bb8ac43529972945830ae">_dbus_string_init</a> (&current_token))
<a name="l00492"></a>00492 {
<a name="l00493"></a>00493 _DBUS_SET_OOM (error);
<a name="l00494"></a>00494 <span class="keywordflow">goto</span> init_error;
<a name="l00495"></a>00495 }
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="keywordflow">break</span>;
<a name="l00498"></a>00498
<a name="l00499"></a>00499 <span class="keywordflow">case</span> <span class="charliteral">' '</span>:
<a name="l00500"></a>00500 <span class="keywordflow">case</span> <span class="charliteral">'\t'</span>:
<a name="l00501"></a>00501 <span class="comment">/* If the current token contains the previous char, delimit</span>
<a name="l00502"></a>00502 <span class="comment"> * the current token. A nonzero length</span>
<a name="l00503"></a>00503 <span class="comment"> * token should always contain the previous char.</span>
<a name="l00504"></a>00504 <span class="comment"> */</span>
<a name="l00505"></a>00505 <span class="keywordflow">if</span> (_dbus_string_get_length (&current_token) > 0)
<a name="l00506"></a>00506 {
<a name="l00507"></a>00507 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00508"></a>00508 <span class="keywordflow">goto</span> error;
<a name="l00509"></a>00509
<a name="l00510"></a>00510 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&current_token);
<a name="l00511"></a>00511
<a name="l00512"></a>00512 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#g348252317f7bb8ac43529972945830ae">_dbus_string_init</a> (&current_token))
<a name="l00513"></a>00513 {
<a name="l00514"></a>00514 _DBUS_SET_OOM (error);
<a name="l00515"></a>00515 <span class="keywordflow">goto</span> init_error;
<a name="l00516"></a>00516 }
<a name="l00517"></a>00517
<a name="l00518"></a>00518 }
<a name="l00519"></a>00519
<a name="l00520"></a>00520 <span class="comment">/* discard all unquoted blanks (don't add them to a token) */</span>
<a name="l00521"></a>00521 <span class="keywordflow">break</span>;
<a name="l00522"></a>00522
<a name="l00523"></a>00523
<a name="l00524"></a>00524 <span class="comment">/* single/double quotes are appended to the token,</span>
<a name="l00525"></a>00525 <span class="comment"> * escapes are maybe appended next time through the loop,</span>
<a name="l00526"></a>00526 <span class="comment"> * comment chars are never appended.</span>
<a name="l00527"></a>00527 <span class="comment"> */</span>
<a name="l00528"></a>00528
<a name="l00529"></a>00529 <span class="keywordflow">case</span> <span class="charliteral">'\''</span>:
<a name="l00530"></a>00530 <span class="keywordflow">case</span> <span class="charliteral">'"'</span>:
<a name="l00531"></a>00531 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00532"></a>00532 {
<a name="l00533"></a>00533 _DBUS_SET_OOM (error);
<a name="l00534"></a>00534 <span class="keywordflow">goto</span> error;
<a name="l00535"></a>00535 }
<a name="l00536"></a>00536
<a name="l00537"></a>00537 <span class="comment">/* FALL THRU */</span>
<a name="l00538"></a>00538
<a name="l00539"></a>00539 <span class="keywordflow">case</span> <span class="charliteral">'#'</span>:
<a name="l00540"></a>00540 <span class="keywordflow">case</span> <span class="charliteral">'\\'</span>:
<a name="l00541"></a>00541 current_quote = *p;
<a name="l00542"></a>00542 <span class="keywordflow">break</span>;
<a name="l00543"></a>00543
<a name="l00544"></a>00544 <span class="keywordflow">default</span>:
<a name="l00545"></a>00545 <span class="comment">/* Combines rules 4) and 6) - if we have a token, append to it,</span>
<a name="l00546"></a>00546 <span class="comment"> * otherwise create a new token.</span>
<a name="l00547"></a>00547 <span class="comment"> */</span>
<a name="l00548"></a>00548 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga6ecf36e70263659f921a4ef0335db12">_dbus_string_append_byte</a> (&current_token, *p))
<a name="l00549"></a>00549 {
<a name="l00550"></a>00550 _DBUS_SET_OOM (error);
<a name="l00551"></a>00551 <span class="keywordflow">goto</span> error;
<a name="l00552"></a>00552 }
<a name="l00553"></a>00553 <span class="keywordflow">break</span>;
<a name="l00554"></a>00554 }
<a name="l00555"></a>00555 }
<a name="l00556"></a>00556
<a name="l00557"></a>00557 <span class="comment">/* We need to count consecutive backslashes mod 2, </span>
<a name="l00558"></a>00558 <span class="comment"> * to detect escaped doublequotes.</span>
<a name="l00559"></a>00559 <span class="comment"> */</span>
<a name="l00560"></a>00560 <span class="keywordflow">if</span> (*p != <span class="charliteral">'\\'</span>)
<a name="l00561"></a>00561 quoted = <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00562"></a>00562 <span class="keywordflow">else</span>
<a name="l00563"></a>00563 quoted = !quoted;
<a name="l00564"></a>00564
<a name="l00565"></a>00565 ++p;
<a name="l00566"></a>00566 }
<a name="l00567"></a>00567
<a name="l00568"></a>00568 <span class="keywordflow">if</span> (!delimit_token (&current_token, &retval, error))
<a name="l00569"></a>00569 <span class="keywordflow">goto</span> error;
<a name="l00570"></a>00570
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (current_quote)
<a name="l00572"></a>00572 {
<a name="l00573"></a>00573 <a class="code" href="group__DBusErrors.html#g6d88800f109912571aae71427b6c1587">dbus_set_error_const</a> (error, <a class="code" href="group__DBusProtocol.html#gcf5321b161193ad66d5bdf5c910a9792">DBUS_ERROR_INVALID_ARGS</a>, <span class="stringliteral">"Unclosed quotes in command line"</span>);
<a name="l00574"></a>00574 <span class="keywordflow">goto</span> error;
<a name="l00575"></a>00575 }
<a name="l00576"></a>00576
<a name="l00577"></a>00577 <span class="keywordflow">if</span> (retval == <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00578"></a>00578 {
<a name="l00579"></a>00579 <a class="code" href="group__DBusErrors.html#g6d88800f109912571aae71427b6c1587">dbus_set_error_const</a> (error, <a class="code" href="group__DBusProtocol.html#gcf5321b161193ad66d5bdf5c910a9792">DBUS_ERROR_INVALID_ARGS</a>, <span class="stringliteral">"No tokens found in command line"</span>);
<a name="l00580"></a>00580 <span class="keywordflow">goto</span> error;
<a name="l00581"></a>00581 }
<a name="l00582"></a>00582
<a name="l00583"></a>00583 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&current_token);
<a name="l00584"></a>00584
<a name="l00585"></a>00585 <span class="keywordflow">return</span> retval;
<a name="l00586"></a>00586
<a name="l00587"></a>00587 error:
<a name="l00588"></a>00588 <a class="code" href="group__DBusString.html#g781ca91acda49a834dce7d0ed0eef212">_dbus_string_free</a> (&current_token);
<a name="l00589"></a>00589
<a name="l00590"></a>00590 init_error:
<a name="l00591"></a>00591 <span class="keywordflow">if</span> (retval)
<a name="l00592"></a>00592 {
<a name="l00593"></a>00593 <a class="code" href="group__DBusList.html#g8dd69084b53361803a765e6d53d5b9d1">_dbus_list_foreach</a> (&retval, (<a class="code" href="group__DBusInternalsUtils.html#gadf9d45082dd1c9f59d8420d13492669">DBusForeachFunction</a>) <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a>, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00594"></a>00594 <a class="code" href="group__DBusList.html#ga36d13444a050a923941c53650b72f9d">_dbus_list_clear</a> (&retval);
<a name="l00595"></a>00595 }
<a name="l00596"></a>00596
<a name="l00597"></a>00597 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00598"></a>00598 }
<a name="l00599"></a>00599
<a name="l00617"></a>00617 <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a>
<a name="l00618"></a>00618 _dbus_shell_parse_argv (<span class="keyword">const</span> <span class="keywordtype">char</span> *command_line,
<a name="l00619"></a>00619 <span class="keywordtype">int</span> *argcp,
<a name="l00620"></a>00620 <span class="keywordtype">char</span> ***argvp,
<a name="l00621"></a>00621 <a class="code" href="structDBusError.html">DBusError</a> *error)
<a name="l00622"></a>00622 {
<a name="l00623"></a>00623 <span class="comment">/* Code based on poptParseArgvString() from libpopt */</span>
<a name="l00624"></a>00624 <span class="keywordtype">int</span> argc = 0;
<a name="l00625"></a>00625 <span class="keywordtype">char</span> **argv = <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00626"></a>00626 <a class="code" href="structDBusList.html">DBusList</a> *tokens = <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00627"></a>00627 <span class="keywordtype">int</span> i;
<a name="l00628"></a>00628 <a class="code" href="structDBusList.html">DBusList</a> *tmp_list;
<a name="l00629"></a>00629
<a name="l00630"></a>00630 <span class="keywordflow">if</span> (!command_line)
<a name="l00631"></a>00631 {
<a name="l00632"></a>00632 _dbus_verbose (<span class="stringliteral">"Command line is NULL\n"</span>);
<a name="l00633"></a>00633 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00634"></a>00634 }
<a name="l00635"></a>00635
<a name="l00636"></a>00636 tokens = tokenize_command_line (command_line, error);
<a name="l00637"></a>00637 <span class="keywordflow">if</span> (tokens == <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00638"></a>00638 {
<a name="l00639"></a>00639 _dbus_verbose (<span class="stringliteral">"No tokens for command line '%s'\n"</span>, command_line);
<a name="l00640"></a>00640 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00641"></a>00641 }
<a name="l00642"></a>00642
<a name="l00643"></a>00643 <span class="comment">/* Because we can't have introduced any new blank space into the</span>
<a name="l00644"></a>00644 <span class="comment"> * tokens (we didn't do any new expansions), we don't need to</span>
<a name="l00645"></a>00645 <span class="comment"> * perform field splitting. If we were going to honor IFS or do any</span>
<a name="l00646"></a>00646 <span class="comment"> * expansions, we would have to do field splitting on each word</span>
<a name="l00647"></a>00647 <span class="comment"> * here. Also, if we were going to do any expansion we would need to</span>
<a name="l00648"></a>00648 <span class="comment"> * remove any zero-length words that didn't contain quotes</span>
<a name="l00649"></a>00649 <span class="comment"> * originally; but since there's no expansion we know all words have</span>
<a name="l00650"></a>00650 <span class="comment"> * nonzero length, unless they contain quotes.</span>
<a name="l00651"></a>00651 <span class="comment"> * </span>
<a name="l00652"></a>00652 <span class="comment"> * So, we simply remove quotes, and don't do any field splitting or</span>
<a name="l00653"></a>00653 <span class="comment"> * empty word removal, since we know there was no way to introduce</span>
<a name="l00654"></a>00654 <span class="comment"> * such things.</span>
<a name="l00655"></a>00655 <span class="comment"> */</span>
<a name="l00656"></a>00656
<a name="l00657"></a>00657 argc = <a class="code" href="group__DBusList.html#ga2144a5489bb35b16b2b671488ad597c">_dbus_list_get_length</a> (&tokens);
<a name="l00658"></a>00658 argv = <a class="code" href="group__DBusMemory.html#g54ccb556e7964112a825a7f46c156ca0">dbus_new</a> (<span class="keywordtype">char</span> *, argc + 1);
<a name="l00659"></a>00659 <span class="keywordflow">if</span> (!argv)
<a name="l00660"></a>00660 {
<a name="l00661"></a>00661 _DBUS_SET_OOM (error);
<a name="l00662"></a>00662 <span class="keywordflow">goto</span> error;
<a name="l00663"></a>00663 }
<a name="l00664"></a>00664
<a name="l00665"></a>00665 i = 0;
<a name="l00666"></a>00666 tmp_list = tokens;
<a name="l00667"></a>00667 <span class="keywordflow">while</span> (tmp_list)
<a name="l00668"></a>00668 {
<a name="l00669"></a>00669 argv[i] = _dbus_shell_unquote (tmp_list-><a class="code" href="structDBusList.html#29ab457bcf9092252bb0c4282c727055">data</a>);
<a name="l00670"></a>00670
<a name="l00671"></a>00671 <span class="keywordflow">if</span> (!argv[i])
<a name="l00672"></a>00672 {
<a name="l00673"></a>00673 <span class="keywordtype">int</span> j;
<a name="l00674"></a>00674 <span class="keywordflow">for</span> (j = 0; j < i; j++)
<a name="l00675"></a>00675 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a>(argv[j]);
<a name="l00676"></a>00676
<a name="l00677"></a>00677 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (argv);
<a name="l00678"></a>00678 _DBUS_SET_OOM (error);
<a name="l00679"></a>00679 <span class="keywordflow">goto</span> error;
<a name="l00680"></a>00680 }
<a name="l00681"></a>00681
<a name="l00682"></a>00682 tmp_list = <a class="code" href="group__DBusList.html#gede4ace46d5ee497d75074bfec4490a2">_dbus_list_get_next_link</a> (&tokens, tmp_list);
<a name="l00683"></a>00683 ++i;
<a name="l00684"></a>00684 }
<a name="l00685"></a>00685 argv[argc] = <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00686"></a>00686
<a name="l00687"></a>00687 <a class="code" href="group__DBusList.html#g8dd69084b53361803a765e6d53d5b9d1">_dbus_list_foreach</a> (&tokens, (<a class="code" href="group__DBusInternalsUtils.html#gadf9d45082dd1c9f59d8420d13492669">DBusForeachFunction</a>) <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a>, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00688"></a>00688 <a class="code" href="group__DBusList.html#ga36d13444a050a923941c53650b72f9d">_dbus_list_clear</a> (&tokens);
<a name="l00689"></a>00689
<a name="l00690"></a>00690 <span class="keywordflow">if</span> (argcp)
<a name="l00691"></a>00691 *argcp = argc;
<a name="l00692"></a>00692
<a name="l00693"></a>00693 <span class="keywordflow">if</span> (argvp)
<a name="l00694"></a>00694 *argvp = argv;
<a name="l00695"></a>00695 <span class="keywordflow">else</span>
<a name="l00696"></a>00696 <a class="code" href="group__DBusMemory.html#g6d4674de64d806d238ffd309a486754e">dbus_free_string_array</a> (argv);
<a name="l00697"></a>00697
<a name="l00698"></a>00698 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga8cecfc5c5c054d2875c03e77b7be15d">TRUE</a>;
<a name="l00699"></a>00699
<a name="l00700"></a>00700 error:
<a name="l00701"></a>00701 <a class="code" href="group__DBusList.html#g8dd69084b53361803a765e6d53d5b9d1">_dbus_list_foreach</a> (&tokens, (<a class="code" href="group__DBusInternalsUtils.html#gadf9d45082dd1c9f59d8420d13492669">DBusForeachFunction</a>) <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a>, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00702"></a>00702 <a class="code" href="group__DBusList.html#ga36d13444a050a923941c53650b72f9d">_dbus_list_clear</a> (&tokens);
<a name="l00703"></a>00703
<a name="l00704"></a>00704 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#ga93f0eb578d23995850d61f7d61c55c1">FALSE</a>;
<a name="l00705"></a>00705
<a name="l00706"></a>00706 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Dec 14 22:26:12 2009 for D-Bus by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
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