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modules/xref/ModuleCmd_Use.c.src.html
rkowen a77d63f1e1 Updated the cxref docs to 3.2.0rc4
2006-01-12 19:30:05 +00:00

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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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: ModuleCmd_Use.c **
<a name="line8">8 |</a> ** First Edition: 1991/10/23 **
<a name="line9">9 |</a> ** **
<a name="line10">10 |</a> ** Authors: John Furlan, jlf@behere.com **
<a name="line11">11 |</a> ** Jens Hamisch, jens@Strawberry.COM **
<a name="line12">12 |</a> ** **
<a name="line13">13 |</a> ** Description: Prepends (and appends) directories to the MODULEPATH **
<a name="line14">14 |</a> ** environment variable to enable access to more **
<a name="line15">15 |</a> ** modulefiles. **
<a name="line16">16 |</a> ** **
<a name="line17">17 |</a> ** Exports: ModuleCmd_Use **
<a name="line18">18 |</a> ** ModuleCmd_UnUse **
<a name="line19">19 |</a> ** **
<a name="line20">20 |</a> ** Notes: **
<a name="line21">21 |</a> ** **
<a name="line22">22 |</a> ** ************************************************************************ **
<a name="line23">23 |</a> ****/
<a name="line24">24 |</a>
<a name="line25">25 |</a> /** ** Copyright *********************************************************** **
<a name="line26">26 |</a> ** **
<a name="line27">27 |</a> ** Copyright 1991-1994 by John L. Furlan. **
<a name="line28">28 |</a> ** see LICENSE.GPL, which must be provided, for details **
<a name="line29">29 |</a> ** **
<a name="line30">30 |</a> ** ************************************************************************ **/
<a name="line31">31 |</a>
<a name="line32">32 |</a> static char Id[] = "@(#)$Id: ModuleCmd_Use.c.src.html,v 1.6 2006/01/18 05:35:11 rkowen Exp $";
<a name="line33">33 |</a> static void *UseId[] = { &amp;UseId, Id };
<a name="line34">34 |</a>
<a name="line35">35 |</a> /** ************************************************************************ **/
<a name="line36">36 |</a> /** HEADERS **/
<a name="line37">37 |</a> /** ************************************************************************ **/
<a name="line38">38 |</a>
<a name="line39">39 |</a> #include "modules_def.h"
<a name="line40">40 |</a>
<a name="line41">41 |</a> /** ************************************************************************ **/
<a name="line42">42 |</a> /** LOCAL DATATYPES **/
<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> /** CONSTANTS **/
<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> /** MACROS **/
<a name="line55">55 |</a> /** ************************************************************************ **/
<a name="line56">56 |</a>
<a name="line57">57 |</a> /** not applicable **/
<a name="line58">58 |</a>
<a name="line59">59 |</a> /** ************************************************************************ **/
<a name="line60">60 |</a> /** LOCAL DATA **/
<a name="line61">61 |</a> /** ************************************************************************ **/
<a name="line62">62 |</a>
<a name="line63">63 |</a> static char module_name[] = "ModuleCmd_Use.c"; /** File name of this module **/
<a name="line64">64 |</a> #if WITH_DEBUGGING_UTIL_1
<a name="line65">65 |</a> static char _proc_append_to_modulesbeginenv[] = "append_to_modulesbeginenv";
<a name="line66">66 |</a> #endif
<a name="line67">67 |</a> #if WITH_DEBUGGING_MODULECMD
<a name="line68">68 |</a> static char _proc_ModuleCmd_Use[] = "ModuleCmd_Use";
<a name="line69">69 |</a> static char _proc_ModuleCmd_UnUse[] = "ModuleCmd_UnUse";
<a name="line70">70 |</a> #endif
<a name="line71">71 |</a>
<a name="line72">72 |</a> /** ************************************************************************ **/
<a name="line73">73 |</a> /** PROTOTYPES **/
<a name="line74">74 |</a> /** ************************************************************************ **/
<a name="line75">75 |</a>
<a name="line76">76 |</a>
<a name="line77">77 |</a> #ifdef BEGINENV
<a name="line78">78 |</a> /*++++
<a name="line79">79 |</a> ** ** Function-Header ***************************************************** **
<a name="line80">80 |</a> ** **
<a name="line81">81 |</a> ** Function: append_to_modulesbeginenv **
<a name="line82">82 |</a> ** **
<a name="line83">83 |</a> ** Description: Append the passed variable (with value) to the begin-**
<a name="line84">84 |</a> ** ning environment **
<a name="line85">85 |</a> ** **
<a name="line86">86 |</a> ** First Edition: 1991/10/23 **
<a name="line87">87 |</a> ** **
<a name="line88">88 |</a> ** Parameters: Tcl_Interp *interp Attached Tcl Interp. **
<a name="line89">89 |</a> ** char *var Name of the variable **
<a name="line90">90 |</a> ** **
<a name="line91">91 |</a> ** Result: - **
<a name="line92">92 |</a> ** **
<a name="line93">93 |</a> ** Attached Globals: - **
<a name="line94">94 |</a> ** **
<a name="line95">95 |</a> ** ************************************************************************ **
<a name="line96">96 |</a> ++++*/
<a name="line97">97 |</a>
<a name="line98">98 |</a> static void append_to_modulesbeginenv( Tcl_Interp *interp,
<a name="line99">99 |</a> char *var)
<a name="line100">100 |</a> {
<a name="line101">101 |</a> char *filename, /** The filename, where the begin- **/
<a name="line102">102 |</a> /** ning environment resides **/
<a name="line103">103 |</a> *val; /** Value of the passed variable **/
<a name="line104">104 |</a> FILE *file; /** File read handle **/
<a name="line105">105 |</a>
<a name="line106">106 |</a> #if WITH_DEBUGGING_UTIL_1
<a name="line107">107 |</a> ErrorLogger( NO_ERR_START, LOC, _proc_append_to_modulesbeginenv, NULL);
<a name="line108">108 |</a> #endif
<a name="line109">109 |</a>
<a name="line110">110 |</a> if( var
<a name="line111">111 |</a> #if BEGINENV == 99
<a name="line112">112 |</a> &amp;&amp; Tcl_GetVar2( interp,"env","MODULESBEGINENV", TCL_GLOBAL_ONLY)
<a name="line113">113 |</a> #endif
<a name="line114">114 |</a> ) {
<a name="line115">115 |</a>
<a name="line116">116 |</a> #if WITH_DEBUGGING_UTIL_1
<a name="line117">117 |</a> ErrorLogger( NO_ERR_DEBUG, LOC, "Adding '", var, "'");
<a name="line118">118 |</a> #endif
<a name="line119">119 |</a>
<a name="line120">120 |</a> /**
<a name="line121">121 |</a> ** Get filename and the value of the passed variable
<a name="line122">122 |</a> **/
<a name="line123">123 |</a>
<a name="line124">124 |</a> if( filename = (char *) Tcl_GetVar2( interp, "env","_MODULESBEGINENV_",
<a name="line125">125 |</a> TCL_GLOBAL_ONLY)) {
<a name="line126">126 |</a> val = (char *) Tcl_GetVar2( interp, "env", var, TCL_GLOBAL_ONLY);
<a name="line127">127 |</a>
<a name="line128">128 |</a> /**
<a name="line129">129 |</a> ** Append the string &lt;var&gt;=&lt;value&gt;
<a name="line130">130 |</a> **/
<a name="line131">131 |</a>
<a name="line132">132 |</a> if( NULL != (file = fopen( filename, "a+"))) {
<a name="line133">133 |</a> fprintf( file, "%s=%s\n", var, val);
<a name="line134">134 |</a> if( EOF == fclose( file))
<a name="line135">135 |</a> ErrorLogger( ERR_CLOSE, LOC, filename, NULL);
<a name="line136">136 |</a> } else {
<a name="line137">137 |</a> ErrorLogger( ERR_OPEN, LOC, filename, "appending", NULL);
<a name="line138">138 |</a> }
<a name="line139">139 |</a>
<a name="line140">140 |</a> } /** if( get filename) **/
<a name="line141">141 |</a> } /** if( var passed) **/
<a name="line142">142 |</a>
<a name="line143">143 |</a> } /** End of 'append_to_modulesbeginenv' **/
<a name="line144">144 |</a> #else
<a name="line145">145 |</a> # define append_to_modulesbeginenv( a, b) {}
<a name="line146">146 |</a> #endif
<a name="line147">147 |</a>
<a name="line148">148 |</a> /*++++
<a name="line149">149 |</a> ** ** Function-Header ***************************************************** **
<a name="line150">150 |</a> ** **
<a name="line151">151 |</a> ** Function: ModuleCmd_Use **
<a name="line152">152 |</a> ** **
<a name="line153">153 |</a> ** Description: Execution of the module-command 'use' **
<a name="line154">154 |</a> ** **
<a name="line155">155 |</a> ** First Edition: 1991/10/23 **
<a name="line156">156 |</a> ** **
<a name="line157">157 |</a> ** Parameters: Tcl_Interp *interp Attached Tcl Interp. **
<a name="line158">158 |</a> ** int argc Number of arguments **
<a name="line159">159 |</a> ** char *argv[] Argument list **
<a name="line160">160 |</a> ** **
<a name="line161">161 |</a> ** Result: int TCL_ERROR Failure **
<a name="line162">162 |</a> ** TCL_OK Successfull operation **
<a name="line163">163 |</a> ** **
<a name="line164">164 |</a> ** Attached Globals: g_flags Controllig the callback functions **
<a name="line165">165 |</a> ** **
<a name="line166">166 |</a> ** ************************************************************************ **
<a name="line167">167 |</a> ++++*/
<a name="line168">168 |</a>
<a name="line169">169 |</a> int ModuleCmd_Use( Tcl_Interp *interp,
<a name="line170">170 |</a> int argc,
<a name="line171">171 |</a> char *argv[])
<a name="line172">172 |</a> {
<a name="line173">173 |</a> struct stat stats; /** Buffer for the stat() systemcall **/
<a name="line174">174 |</a> char *pathargv[4]; /** Argument buffer for Tcl calls **/
<a name="line175">175 |</a> int i;
<a name="line176">176 |</a>
<a name="line177">177 |</a> /**
<a name="line178">178 |</a> ** Parameter check. Usage is 'module use &lt;path&gt; [ &lt;path&gt; ... ]'
<a name="line179">179 |</a> **/
<a name="line180">180 |</a>
<a name="line181">181 |</a> #if WITH_DEBUGGING_MODULECMD
<a name="line182">182 |</a> ErrorLogger( NO_ERR_START, LOC, _proc_ModuleCmd_Use, NULL);
<a name="line183">183 |</a> #endif
<a name="line184">184 |</a>
<a name="line185">185 |</a> if( argc &lt; 1) {
<a name="line186">186 |</a> if( OK != ErrorLogger( ERR_USAGE, LOC, "use [-a|--append] dir [dir ...]", NULL))
<a name="line187">187 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line188">188 |</a> }
<a name="line189">189 |</a>
<a name="line190">190 |</a> /**
<a name="line191">191 |</a> ** Remove is done by another subroutine
<a name="line192">192 |</a> **/
<a name="line193">193 |</a>
<a name="line194">194 |</a> if( g_flags &amp; M_REMOVE)
<a name="line195">195 |</a> return( ModuleCmd_UnUse( interp, argc, argv));
<a name="line196">196 |</a>
<a name="line197">197 |</a> /**
<a name="line198">198 |</a> ** Append or prepend the new module path
<a name="line199">199 |</a> **/
<a name="line200">200 |</a>
<a name="line201">201 |</a> if( append_flag ) {
<a name="line202">202 |</a> pathargv[0] = "append-path";
<a name="line203">203 |</a> } else {
<a name="line204">204 |</a> pathargv[0] = "prepend-path";
<a name="line205">205 |</a> }
<a name="line206">206 |</a>
<a name="line207">207 |</a> /**
<a name="line208">208 |</a> ** Append (prepend) all passed paths to MODULEPATH in case they do exist,
<a name="line209">209 |</a> ** and are readable directories
<a name="line210">210 |</a> **/
<a name="line211">211 |</a>
<a name="line212">212 |</a> pathargv[1] = "MODULEPATH";
<a name="line213">213 |</a> pathargv[3] = NULL;
<a name="line214">214 |</a>
<a name="line215">215 |</a> for( i=0; i &lt; argc; i++) {
<a name="line216">216 |</a> /**
<a name="line217">217 |</a> ** Check for -a|--append flag (if in modulefile - it's not parsed
<a name="line218">218 |</a> ** by getoptlong) (keep -append for backward compatibility)
<a name="line219">219 |</a> **/
<a name="line220">220 |</a> if( (!strcmp("-a",argv[i])) || (!strcmp("--append",argv[i]))
<a name="line221">221 |</a> || (!strcmp("-append",argv[i]))) {
<a name="line222">222 |</a>
<a name="line223">223 |</a> pathargv[0] = "append-path";
<a name="line224">224 |</a> continue;
<a name="line225">225 |</a>
<a name="line226">226 |</a> } else if( stat( argv[i], &amp;stats) &lt; 0) {
<a name="line227">227 |</a> /**
<a name="line228">228 |</a> ** Check for existing, readable directories
<a name="line229">229 |</a> **/
<a name="line230">230 |</a> if( OK != ErrorLogger( ERR_DIRNOTFOUND, LOC, argv[i], NULL))
<a name="line231">231 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line232">232 |</a> } else if( !S_ISDIR( stats.st_mode)) {
<a name="line233">233 |</a> if( OK != ErrorLogger( ERR_NODIR, LOC, argv[i], NULL))
<a name="line234">234 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line235">235 |</a> }
<a name="line236">236 |</a>
<a name="line237">237 |</a> /**
<a name="line238">238 |</a> ** Used the 'cmdSetPath' callback function to modify the MODULEPATH
<a name="line239">239 |</a> **/
<a name="line240">240 |</a>
<a name="line241">241 |</a> pathargv[2] = argv[i];
<a name="line242">242 |</a>
<a name="line243">243 |</a> if( cmdSetPath((ClientData) 0, interp, 3, (CONST84 char **) pathargv)
<a name="line244">244 |</a> == TCL_ERROR)
<a name="line245">245 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line246">246 |</a>
<a name="line247">247 |</a> } /** for **/
<a name="line248">248 |</a>
<a name="line249">249 |</a> /**
<a name="line250">250 |</a> ** Add the new value of MODULESPATH to the end
<a name="line251">251 |</a> ** of the beginenvcache so that update will be able to find its
<a name="line252">252 |</a> ** modulefiles.
<a name="line253">253 |</a> **/
<a name="line254">254 |</a>
<a name="line255">255 |</a> append_to_modulesbeginenv( interp, "MODULEPATH");
<a name="line256">256 |</a>
<a name="line257">257 |</a> #if WITH_DEBUGGING_MODULECMD
<a name="line258">258 |</a> ErrorLogger( NO_ERR_END, LOC, _proc_ModuleCmd_Use, NULL);
<a name="line259">259 |</a> #endif
<a name="line260">260 |</a>
<a name="line261">261 |</a> return( TCL_OK);
<a name="line262">262 |</a>
<a name="line263">263 |</a> } /** End of 'ModuleCmd_Use' **/
<a name="line264">264 |</a>
<a name="line265">265 |</a> /*++++
<a name="line266">266 |</a> ** ** Function-Header ***************************************************** **
<a name="line267">267 |</a> ** **
<a name="line268">268 |</a> ** Function: ModuleCmd_UnUse **
<a name="line269">269 |</a> ** **
<a name="line270">270 |</a> ** Description: Execution of the module-command 'unuse' **
<a name="line271">271 |</a> ** **
<a name="line272">272 |</a> ** First Edition: 1991/10/23 **
<a name="line273">273 |</a> ** **
<a name="line274">274 |</a> ** Parameters: Tcl_Interp *interp Attached Tcl Interp. **
<a name="line275">275 |</a> ** int argc Number of arguments **
<a name="line276">276 |</a> ** char *argv[] Argument list **
<a name="line277">277 |</a> ** **
<a name="line278">278 |</a> ** Result: int TCL_ERROR Failure **
<a name="line279">279 |</a> ** TCL_OK Successfull operation **
<a name="line280">280 |</a> ** **
<a name="line281">281 |</a> ** Attached Globals: - **
<a name="line282">282 |</a> ** **
<a name="line283">283 |</a> ** ************************************************************************ **
<a name="line284">284 |</a> ++++*/
<a name="line285">285 |</a>
<a name="line286">286 |</a> int ModuleCmd_UnUse( Tcl_Interp *interp,
<a name="line287">287 |</a> int argc,
<a name="line288">288 |</a> char *argv[])
<a name="line289">289 |</a> {
<a name="line290">290 |</a> char *pathargv[4];
<a name="line291">291 |</a> int i = 0;
<a name="line292">292 |</a>
<a name="line293">293 |</a> #if WITH_DEBUGGING_MODULECMD
<a name="line294">294 |</a> ErrorLogger( NO_ERR_START, LOC, _proc_ModuleCmd_UnUse, NULL);
<a name="line295">295 |</a> #endif
<a name="line296">296 |</a>
<a name="line297">297 |</a> /**
<a name="line298">298 |</a> ** Parameter check. Usage is 'module use &lt;path&gt; [ &lt;path&gt; ... ]'
<a name="line299">299 |</a> **/
<a name="line300">300 |</a>
<a name="line301">301 |</a> if( argc &lt; 1) {
<a name="line302">302 |</a> if( OK != ErrorLogger( ERR_USAGE, LOC, "unuse dir [dir ...]", NULL))
<a name="line303">303 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line304">304 |</a> }
<a name="line305">305 |</a>
<a name="line306">306 |</a> /**
<a name="line307">307 |</a> ** Remove all passed paths from MODULEPATH
<a name="line308">308 |</a> ** Use the 'cmdSetPath' callback function to modify the MODULEPATH
<a name="line309">309 |</a> **/
<a name="line310">310 |</a>
<a name="line311">311 |</a> pathargv[0] = "remove-path";
<a name="line312">312 |</a> pathargv[1] = "MODULEPATH";
<a name="line313">313 |</a> pathargv[3] = NULL;
<a name="line314">314 |</a>
<a name="line315">315 |</a> for(i = 0; i &lt; argc; i++) {
<a name="line316">316 |</a> pathargv[2] = argv[i];
<a name="line317">317 |</a> if(cmdRemovePath((ClientData) 0, interp, 3, (CONST84 char **) pathargv)
<a name="line318">318 |</a> == TCL_ERROR)
<a name="line319">319 |</a> return( TCL_ERROR); /** -------- EXIT (FAILURE) -------&gt; **/
<a name="line320">320 |</a> } /** for **/
<a name="line321">321 |</a>
<a name="line322">322 |</a> /**
<a name="line323">323 |</a> ** Add the new value of MODULESPATH to the end
<a name="line324">324 |</a> ** of the beginenvcache so that update will be able to find its
<a name="line325">325 |</a> ** modulefiles.
<a name="line326">326 |</a> **/
<a name="line327">327 |</a>
<a name="line328">328 |</a> append_to_modulesbeginenv( interp, "MODULEPATH");
<a name="line329">329 |</a>
<a name="line330">330 |</a> #if WITH_DEBUGGING_MODULECMD
<a name="line331">331 |</a> ErrorLogger( NO_ERR_END, LOC, _proc_ModuleCmd_UnUse, NULL);
<a name="line332">332 |</a> #endif
<a name="line333">333 |</a>
<a name="line334">334 |</a> return( TCL_OK);
<a name="line335">335 |</a>
<a name="line336">336 |</a> } /** End of 'ModuleCmd_UnUse' **/
<a name="line337">337 |</a>
<a name="line338">338 |</a>
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