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modules/xref/cmdIsLoaded.c.src.html
2006-01-12 19:30:05 +00:00

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<a name="line1">1 |</a> /*****
<a name="line2">2 |</a> ** ** Module Header ******************************************************* **
<a name="line3">3 |</a> ** **
<a name="line4">4 |</a> ** Modules Revision 3.0 **
<a name="line5">5 |</a> ** Providing a flexible user environment **
<a name="line6">6 |</a> ** **
<a name="line7">7 |</a> ** File: cmdIsLoaded.c **
<a name="line8">8 |</a> ** First Edition: 2000/04/12 **
<a name="line9">9 |</a> ** **
<a name="line10">10 |</a> ** Description: The Tcl conflict and prereq commands. **
<a name="line11">11 |</a> ** **
<a name="line12">12 |</a> ** Exports: cmdIsLoaded **
<a name="line13">13 |</a> ** **
<a name="line14">14 |</a> ** Notes: **
<a name="line15">15 |</a> ** **
<a name="line16">16 |</a> ** ************************************************************************ **
<a name="line17">17 |</a> ****/
<a name="line18">18 |</a>
<a name="line19">19 |</a> /** ** Copyright *********************************************************** **
<a name="line20">20 |</a> ** **
<a name="line21">21 |</a> ** Copyright 1991-1994 by John L. Furlan. **
<a name="line22">22 |</a> ** see LICENSE.GPL, which must be provided, for details **
<a name="line23">23 |</a> ** **
<a name="line24">24 |</a> ** ************************************************************************ **/
<a name="line25">25 |</a>
<a name="line26">26 |</a> static char Id[] = "@(#)$Id: cmdIsLoaded.c.src.html,v 1.6 2006/01/18 05:35:11 rkowen Exp $";
<a name="line27">27 |</a> static void *UseId[] = { &amp;UseId, Id };
<a name="line28">28 |</a>
<a name="line29">29 |</a> /** ************************************************************************ **/
<a name="line30">30 |</a> /** HEADERS **/
<a name="line31">31 |</a> /** ************************************************************************ **/
<a name="line32">32 |</a>
<a name="line33">33 |</a> #include "modules_def.h"
<a name="line34">34 |</a>
<a name="line35">35 |</a> /** ************************************************************************ **/
<a name="line36">36 |</a> /** LOCAL DATATYPES **/
<a name="line37">37 |</a> /** ************************************************************************ **/
<a name="line38">38 |</a>
<a name="line39">39 |</a> /** not applicable **/
<a name="line40">40 |</a>
<a name="line41">41 |</a> /** ************************************************************************ **/
<a name="line42">42 |</a> /** CONSTANTS **/
<a name="line43">43 |</a> /** ************************************************************************ **/
<a name="line44">44 |</a>
<a name="line45">45 |</a> /** not applicable **/
<a name="line46">46 |</a>
<a name="line47">47 |</a> /** ************************************************************************ **/
<a name="line48">48 |</a> /** MACROS **/
<a name="line49">49 |</a> /** ************************************************************************ **/
<a name="line50">50 |</a>
<a name="line51">51 |</a> /** not applicable **/
<a name="line52">52 |</a>
<a name="line53">53 |</a> /** ************************************************************************ **/
<a name="line54">54 |</a> /** LOCAL DATA **/
<a name="line55">55 |</a> /** ************************************************************************ **/
<a name="line56">56 |</a>
<a name="line57">57 |</a> static char module_name[] = "cmdIsLoaded.c"; /** File name of this module **/
<a name="line58">58 |</a> #if WITH_DEBUGGING_CALLBACK
<a name="line59">59 |</a> static char _proc_cmdIsLoaded[] = "cmdIsLoaded";
<a name="line60">60 |</a> #endif
<a name="line61">61 |</a>
<a name="line62">62 |</a> /** ************************************************************************ **/
<a name="line63">63 |</a> /** PROTOTYPES **/
<a name="line64">64 |</a> /** ************************************************************************ **/
<a name="line65">65 |</a>
<a name="line66">66 |</a> /*++++
<a name="line67">67 |</a> ** ** Function-Header ***************************************************** **
<a name="line68">68 |</a> ** **
<a name="line69">69 |</a> ** Function: cmdIsLoaded **
<a name="line70">70 |</a> ** **
<a name="line71">71 |</a> ** Description: Callback function for 'is-loaded' **
<a name="line72">72 |</a> ** **
<a name="line73">73 |</a> ** First Edition: 2000/04/12 **
<a name="line74">74 |</a> ** **
<a name="line75">75 |</a> ** Parameters: ClientData client_data **
<a name="line76">76 |</a> ** Tcl_Interp *interp According Tcl interp.**
<a name="line77">77 |</a> ** int argc Number of arguments **
<a name="line78">78 |</a> ** char *argv[] Argument array **
<a name="line79">79 |</a> ** **
<a name="line80">80 |</a> ** Result: int TCL_OK Successfull completion **
<a name="line81">81 |</a> ** TCL_ERROR Any error **
<a name="line82">82 |</a> ** **
<a name="line83">83 |</a> ** Attached Globals: g_flags These are set up accordingly before **
<a name="line84">84 |</a> ** this function is called in order to **
<a name="line85">85 |</a> ** control everything **
<a name="line86">86 |</a> ** **
<a name="line87">87 |</a> ** ************************************************************************ **
<a name="line88">88 |</a> ++++*/
<a name="line89">89 |</a>
<a name="line90">90 |</a> int cmdIsLoaded( ClientData client_data,
<a name="line91">91 |</a> Tcl_Interp *interp,
<a name="line92">92 |</a> int argc,
<a name="line93">93 |</a> CONST84 char *argv[])
<a name="line94">94 |</a> {
<a name="line95">95 |</a> char **pathlist;
<a name="line96">96 |</a> char **modulelist;
<a name="line97">97 |</a> char *modulepath;
<a name="line98">98 |</a> char *notloaded_flag = (char *) argv[1];
<a name="line99">99 |</a> int i, j, k, numpaths, nummodules;
<a name="line100">100 |</a>
<a name="line101">101 |</a> #if WITH_DEBUGGING_CALLBACK
<a name="line102">102 |</a> ErrorLogger( NO_ERR_START, LOC, _proc_cmdIsLoaded, NULL);
<a name="line103">103 |</a> #endif
<a name="line104">104 |</a>
<a name="line105">105 |</a> /**
<a name="line106">106 |</a> ** Parameter check. Usage is 'is-loaded &lt;module&gt; [&lt;module&gt; ...]'
<a name="line107">107 |</a> **/
<a name="line108">108 |</a>
<a name="line109">109 |</a> if( argc &lt; 2) {
<a name="line110">110 |</a> if( OK != ErrorLogger( ERR_USAGE, LOC, argv[0], "is-loaded-modules", NULL))
<a name="line111">111 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line112">112 |</a> }
<a name="line113">113 |</a>
<a name="line114">114 |</a> /**
<a name="line115">115 |</a> ** There's no prerequisite check in case of whatis
<a name="line116">116 |</a> **/
<a name="line117">117 |</a>
<a name="line118">118 |</a> if( g_flags &amp; M_WHATIS)
<a name="line119">119 |</a> return( TCL_OK); /** -------- EXIT (SUCCESS) -------&gt; **/
<a name="line120">120 |</a>
<a name="line121">121 |</a> /**
<a name="line122">122 |</a> ** Load the MODULEPATH and split it into a list of paths
<a name="line123">123 |</a> **/
<a name="line124">124 |</a>
<a name="line125">125 |</a> if( !(modulepath = (char *) getenv( "MODULEPATH"))) {
<a name="line126">126 |</a> if( OK != ErrorLogger( ERR_MODULE_PATH, LOC, NULL))
<a name="line127">127 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line128">128 |</a> }
<a name="line129">129 |</a>
<a name="line130">130 |</a> #if WITH_DEBUGGING_CALLBACK_1
<a name="line131">131 |</a> ErrorLogger( NO_ERR_DEBUG, LOC, "Got modulepath: '", modulepath, "'", NULL);
<a name="line132">132 |</a> #endif
<a name="line133">133 |</a>
<a name="line134">134 |</a> if( !(pathlist = SplitIntoList( interp, modulepath, &amp;numpaths)))
<a name="line135">135 |</a> return( TCL_OK); /** -------- EXIT (SUCCESS) -------&gt; **/
<a name="line136">136 |</a>
<a name="line137">137 |</a> /**
<a name="line138">138 |</a> ** Check/Display all passed modules
<a name="line139">139 |</a> **/
<a name="line140">140 |</a>
<a name="line141">141 |</a> for( i=1; i&lt;argc &amp;&amp; argv[i] &amp;&amp; notloaded_flag; i++) {
<a name="line142">142 |</a> for( j = 0; j &lt; numpaths &amp;&amp; notloaded_flag; j++) {
<a name="line143">143 |</a>
<a name="line144">144 |</a> if( NULL == (modulelist = SortedDirList( interp, pathlist[j],
<a name="line145">145 |</a> (char *) argv[i], &amp;nummodules)))
<a name="line146">146 |</a> continue;
<a name="line147">147 |</a>
<a name="line148">148 |</a> /**
<a name="line149">149 |</a> ** Now actually check if the prerequisites are fullfilled
<a name="line150">150 |</a> ** The notloaded_flag controls the exit from both loops in case
<a name="line151">151 |</a> ** a prerequisite is missing.
<a name="line152">152 |</a> **/
<a name="line153">153 |</a>
<a name="line154">154 |</a> for( k=0; k &lt; nummodules &amp;&amp; notloaded_flag; k++) {
<a name="line155">155 |</a> if( !IsLoaded( interp, modulelist[k], NULL, NULL)) {
<a name="line156">156 |</a> notloaded_flag = (char *) argv[i];
<a name="line157">157 |</a> } else {
<a name="line158">158 |</a> notloaded_flag = NULL;
<a name="line159">159 |</a> }
<a name="line160">160 |</a> }
<a name="line161">161 |</a>
<a name="line162">162 |</a> /**
<a name="line163">163 |</a> ** Free what has been allocted in the loop
<a name="line164">164 |</a> **/
<a name="line165">165 |</a>
<a name="line166">166 |</a> FreeList( modulelist, nummodules);
<a name="line167">167 |</a>
<a name="line168">168 |</a> } /** for( j) **/
<a name="line169">169 |</a> } /** for( i) **/
<a name="line170">170 |</a>
<a name="line171">171 |</a> /**
<a name="line172">172 |</a> ** Display an error message if this was *NOT* display mode and a
<a name="line173">173 |</a> ** missing prerequisite has been found
<a name="line174">174 |</a> **/
<a name="line175">175 |</a>
<a name="line176">176 |</a> Tcl_SetResult( interp, notloaded_flag ? "0" : "1", TCL_STATIC);
<a name="line177">177 |</a>
<a name="line178">178 |</a> #if WITH_DEBUGGING_CALLBACK
<a name="line179">179 |</a> ErrorLogger( NO_ERR_END, LOC, _proc_cmdIsLoaded, NULL);
<a name="line180">180 |</a> #endif
<a name="line181">181 |</a>
<a name="line182">182 |</a> return( TCL_OK);
<a name="line183">183 |</a>
<a name="line184">184 |</a> } /** End of 'cmdIsLoaded' **/
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