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<h1>num2sdnv.c</h1><a href="num2sdnv_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright 2007 Intel Corporation</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> * you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> * You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> * See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> * limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor"># include <<a class="code" href="dtn-config_8h.html">dtn-config.h</a>></span>
<a name="l00020"></a>00020 <span class="preprocessor">#endif</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <stdio.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <unistd.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <errno.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <strings.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <string.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="sdnv-c_8h.html">sdnv-c.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00031"></a><a class="code" href="num2sdnv_8c.html#b9e1449fd00c98428516f0b41eddcb10">00031</a> <span class="keywordtype">char</span>* <a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a>;
<a name="l00032"></a><a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">00032</a> <span class="keywordtype">char</span>* <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>;
<a name="l00033"></a><a class="code" href="num2sdnv_8c.html#8fd806ad19b8f5513a4cf18cbf77532c">00033</a> <span class="keywordtype">char</span>* <a class="code" href="dtncat_8c.html#7ab59805f7a1819164bc301293db600d">end</a>;
<a name="l00034"></a><a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">00034</a> <span class="keywordtype">int</span> <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>;
<a name="l00035"></a><a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">00035</a> u_char <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>[1024];
<a name="l00036"></a><a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">00036</a> u_int64_t <a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a>;
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">00038</a> <span class="keywordtype">int</span> <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> = 0;
<a name="l00039"></a><a class="code" href="num2sdnv_8c.html#40b3ab0badb93b4ab22cbcac2c0a4d40">00039</a> <span class="preprocessor">#define ENCODE 1</span>
<a name="l00040"></a><a class="code" href="num2sdnv_8c.html#7022843d204c35a29e5ad0ec225f9529">00040</a> <span class="preprocessor"></span><span class="preprocessor">#define DECODE 2</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span>
<a name="l00042"></a><a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">00042</a> <span class="keywordtype">char</span> <a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">hex</a>[] = <span class="stringliteral">"0123456789abcdef"</span>;
<a name="l00043"></a><a class="code" href="num2sdnv_8c.html#f22d5ba911a6c2ccdfb3ba88e52da81f">00043</a> <span class="preprocessor">#define HEXTONUM(x) ((x) < 'a' ? (x) - '0' : x - 'a' + 10)</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a><a class="code" href="num2sdnv_8c.html#0ddf1224851353fc92bfbff6f499fa97">00045</a> <span class="keywordtype">int</span> <a class="code" href="dtncat_8c.html#3c04138a5bfe5d72780bb7e82a18e627">main</a>(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[])
<a name="l00046"></a>00046 {
<a name="l00047"></a>00047 <span class="keywordtype">size_t</span> i;
<a name="l00048"></a>00048 memset(<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>));
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a> = strrchr(argv[0], <span class="charliteral">'/'</span>);
<a name="l00051"></a>00051 <span class="keywordflow">if</span> (<a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a> == 0) {
<a name="l00052"></a>00052 <a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a> = argv[0];
<a name="l00053"></a>00053 } <span class="keywordflow">else</span> {
<a name="l00054"></a>00054 <a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a>++;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keywordflow">if</span> (!strcmp(<a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a>, <span class="stringliteral">"num2sdnv"</span>)) {
<a name="l00058"></a>00058 <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> = <a class="code" href="num2sdnv_8c.html#40b3ab0badb93b4ab22cbcac2c0a4d40">ENCODE</a>;
<a name="l00059"></a>00059 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!strcmp(<a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a>, <span class="stringliteral">"sdnv2num"</span>)) {
<a name="l00060"></a>00060 <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> = <a class="code" href="num2sdnv_8c.html#7022843d204c35a29e5ad0ec225f9529">DECODE</a>;
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a>00063 argv++;
<a name="l00064"></a>00064 argc--;
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keywordflow">while</span> (argc > 1) {
<a name="l00067"></a>00067 <span class="keywordtype">char</span>* arg = argv[0];
<a name="l00068"></a>00068 argv++;
<a name="l00069"></a>00069 argc--;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordflow">if</span> (!strcmp(arg, <span class="stringliteral">"-e"</span>)) {
<a name="l00072"></a>00072 <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> = <a class="code" href="num2sdnv_8c.html#40b3ab0badb93b4ab22cbcac2c0a4d40">ENCODE</a>;
<a name="l00073"></a>00073 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!strcmp(arg, <span class="stringliteral">"-d"</span>)) {
<a name="l00074"></a>00074 <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> = <a class="code" href="num2sdnv_8c.html#7022843d204c35a29e5ad0ec225f9529">DECODE</a>;
<a name="l00075"></a>00075 } <span class="keywordflow">else</span> {
<a name="l00076"></a>00076 fprintf(stderr, <span class="stringliteral">"unknown argument %s\n"</span>, arg);
<a name="l00077"></a>00077 exit(1);
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (argc != 1 || <a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> == 0) {
<a name="l00082"></a>00082 fprintf(stderr, <span class="stringliteral">"usage: %s [-de] <num>\n"</span>
<a name="l00083"></a>00083 <span class="stringliteral">" -e encode number to sdnv\n"</span>
<a name="l00084"></a>00084 <span class="stringliteral">" -d decode sdnv to number\n"</span>,
<a name="l00085"></a>00085 <a class="code" href="dtncat_8c.html#b9e1449fd00c98428516f0b41eddcb10">progname</a>);
<a name="l00086"></a>00086 exit(1);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a> = argv[0];
<a name="l00090"></a>00090 <span class="keywordflow">if</span> (<a class="code" href="num2sdnv_8c.html#1ea5d0cb93f22f7d0fdf804bd68c3326">mode</a> == <a class="code" href="num2sdnv_8c.html#40b3ab0badb93b4ab22cbcac2c0a4d40">ENCODE</a>) {
<a name="l00091"></a>00091 <span class="keywordflow">if</span> (<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[0] == <span class="charliteral">'0'</span> && <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[1] == <span class="charliteral">'x'</span>) {
<a name="l00092"></a>00092 <a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a> = strtoull(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a> + 2, &<a class="code" href="dtncat_8c.html#7ab59805f7a1819164bc301293db600d">end</a>, 16);
<a name="l00093"></a>00093 } <span class="keywordflow">else</span> {
<a name="l00094"></a>00094 <a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a> = strtoull(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>, &<a class="code" href="dtncat_8c.html#7ab59805f7a1819164bc301293db600d">end</a>, 10);
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (*<a class="code" href="dtncat_8c.html#7ab59805f7a1819164bc301293db600d">end</a> != <span class="charliteral">'\0'</span>) {
<a name="l00097"></a>00097 fprintf(stderr, <span class="stringliteral">"invalid number %s\n"</span>, <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>);
<a name="l00098"></a>00098 exit(1);
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> = <a class="code" href="sdnv-c_8h.html#2da99d1526a40b76cdcab27e2d545ad2" title="Convert the given 64-bit integer into an SDNV.">sdnv_encode</a>(<a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a>, <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>, <span class="keyword">sizeof</span>(<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>));
<a name="l00102"></a>00102 } <span class="keywordflow">else</span> {
<a name="l00103"></a>00103 <span class="keywordflow">if</span> (<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[0] == <span class="charliteral">'0'</span> && <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[1] == <span class="charliteral">'x'</span>) {
<a name="l00104"></a>00104 <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a> += 2;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="keywordflow">if</span> ((strlen(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>) % 2) != 0) {
<a name="l00108"></a>00108 fprintf(stderr, <span class="stringliteral">"number string %s must contain full bytes\n"</span>,
<a name="l00109"></a>00109 <a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>);
<a name="l00110"></a>00110 exit(1);
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordflow">for</span> (i = 0; i < strlen(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>) / 2; ++i) {
<a name="l00114"></a>00114 <a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>[i] = (<a class="code" href="num2sdnv_8c.html#f22d5ba911a6c2ccdfb3ba88e52da81f">HEXTONUM</a>(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[2*i]) << 4) +
<a name="l00115"></a>00115 <a class="code" href="num2sdnv_8c.html#f22d5ba911a6c2ccdfb3ba88e52da81f">HEXTONUM</a>(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>[2*i + 1]);
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> = <a class="code" href="sdnv-c_8h.html#3065e7867ccaf57998ba51faa16c0078" title="Convert an SDNV pointed to by bp into a unsigned 64-bit integer.">sdnv_decode</a>(<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>, strlen(<a class="code" href="num2sdnv_8c.html#029c8d406647d43f45f4ffad17005d2c">numstr</a>)/2, &<a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a>);
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120 printf(<span class="stringliteral">"val: %llu (0x%llx)\n"</span>, (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>)<a class="code" href="num2sdnv_8c.html#455b3605dc605fe8e055b9c1470535cf">val</a>, (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>)val);
<a name="l00121"></a>00121 printf(<span class="stringliteral">"len: %d\n"</span>, <a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>);
<a name="l00122"></a>00122 printf(<span class="stringliteral">"sdnv: "</span>);
<a name="l00123"></a>00123 <span class="keywordflow">if</span> (<a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a> > 0) {
<a name="l00124"></a>00124 <span class="keywordflow">for</span> (i = 0; i < (size_t)<a class="code" href="num2sdnv_8c.html#fed088663f8704004425cdae2120b9b3">len</a>; ++i) {
<a name="l00125"></a>00125 printf(<span class="stringliteral">"%c%c"</span>, <a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">hex</a>[(<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>[i] >> 4) & 0xf], <a class="code" href="num2sdnv_8c.html#ba4680bea50e4ffb92fe4ca7ee66b86c">hex</a>[<a class="code" href="num2sdnv_8c.html#a81cdcc7ff6987bc85c073253e32715f">buf</a>[i] & 0xf]);
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128 printf(<span class="stringliteral">"\n"</span>);
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keywordflow">return</span> 0;
<a name="l00131"></a>00131 }
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