2 * tclrrd.c -- A TCL interpreter extension to access the RRD library.
4 * Copyright (c) 1999,2000 Frank Strauss, Technical University of Braunschweig.
6 * See the file "COPYING" for information on usage and redistribution
7 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
17 #include <rrd_format.h>
19 extern int Tclrrd_Init(Tcl_Interp *interp, int safe);
21 extern int __getopt_initialized;
25 * some rrd_XXX() functions might modify the argv strings passed to it.
26 * Hence, we need to do some preparation before
27 * calling the rrd library functions.
29 static char ** getopt_init(argc, argv)
36 argv2 = calloc(argc, sizeof(char *));
37 for (i = 0; i < argc; i++) {
38 argv2[i] = strdup(argv[i]);
43 static void getopt_cleanup(argc, argv2)
49 for (i = 0; i < argc; i++) {
58 Rrd_Create(clientData, interp, argc, argv)
59 ClientData clientData;
66 argv2 = getopt_init(argc, argv);
67 rrd_create(argc, argv2);
68 getopt_cleanup(argc, argv2);
70 if (rrd_test_error()) {
71 Tcl_AppendResult(interp, "RRD Error: ",
72 rrd_get_error(), (char *) NULL);
83 Rrd_Dump(clientData, interp, argc, argv)
84 ClientData clientData;
91 argv2 = getopt_init(argc, argv);
92 rrd_dump(argc, argv2);
93 getopt_cleanup(argv, argv2);
95 /* NOTE: rrd_dump() writes to stdout. No interaction with TCL. */
97 if (rrd_test_error()) {
98 Tcl_AppendResult(interp, "RRD Error: ",
99 rrd_get_error(), (char *) NULL);
110 Rrd_Last(clientData, interp, argc, argv)
111 ClientData clientData;
119 argv2 = getopt_init(argc, argv);
120 t = rrd_last(argc, argv2);
121 getopt_cleanup(argv, argv2);
124 if (rrd_test_error()) {
125 Tcl_AppendResult(interp, "RRD Error: ",
126 rrd_get_error(), (char *) NULL);
131 Tcl_SetIntObj(Tcl_GetObjResult(interp), t);
139 Rrd_Update(clientData, interp, argc, argv)
140 ClientData clientData;
147 argv2 = getopt_init(argc, argv);
148 rrd_update(argc, argv2);
149 getopt_cleanup(argv, argv2);
151 if (rrd_test_error()) {
152 Tcl_AppendResult(interp, "RRD Error: ",
153 rrd_get_error(), (char *) NULL);
164 Rrd_Fetch(clientData, interp, argc, argv)
165 ClientData clientData;
170 time_t start, end, j;
171 unsigned long step, ds_cnt, i, ii;
172 rrd_value_t *data, *datai;
178 argv2 = getopt_init(argc, argv);
179 if (rrd_fetch(argc, argv2, &start, &end, &step,
180 &ds_cnt, &ds_namv, &data) != -1) {
182 listPtr = Tcl_GetObjResult(interp);
183 for (j = start; j <= end; j += step) {
184 for (ii = 0; ii < ds_cnt; ii++) {
185 sprintf(s, "%.2f", *(datai++));
186 Tcl_ListObjAppendElement(interp, listPtr,
187 Tcl_NewStringObj(s, -1));
190 for (i=0; i<ds_cnt; i++) free(ds_namv[i]);
194 getopt_cleanup(argv, argv2);
196 if (rrd_test_error()) {
197 Tcl_AppendResult(interp, "RRD Error: ",
198 rrd_get_error(), (char *) NULL);
209 Rrd_Graph(clientData, interp, argc, argv)
210 ClientData clientData;
223 argv2 = getopt_init(argc, argv);
224 if (rrd_graph(argc, argv2, &calcpr, &xsize, &ysize, NULL, &ymin, &ymax) != -1 ) {
225 listPtr = Tcl_GetObjResult(interp);
226 Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewIntObj(xsize));
227 Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewIntObj(ysize));
232 for(i = 0; calcpr[i]; i++){
233 printf("%s\n", calcpr[i]);
240 getopt_cleanup(argv, argv2);
242 if (rrd_test_error()) {
243 Tcl_AppendResult(interp, "RRD Error: ",
244 rrd_get_error(), (char *) NULL);
255 Rrd_Tune(clientData, interp, argc, argv)
256 ClientData clientData;
263 argv2 = getopt_init(argc, argv);
264 rrd_tune(argc, argv2);
265 getopt_cleanup(argv, argv2);
267 if (rrd_test_error()) {
268 Tcl_AppendResult(interp, "RRD Error: ",
269 rrd_get_error(), (char *) NULL);
280 Rrd_Resize(clientData, interp, argc, argv)
281 ClientData clientData;
288 argv2 = getopt_init(argc, argv);
289 rrd_resize(argc, argv2);
290 getopt_cleanup(argv, argv2);
292 if (rrd_test_error()) {
293 Tcl_AppendResult(interp, "RRD Error: ",
294 rrd_get_error(), (char *) NULL);
305 Rrd_Restore(clientData, interp, argc, argv)
306 ClientData clientData;
313 argv2 = getopt_init(argc, argv);
314 rrd_restore(argc, argv2);
315 getopt_cleanup(argv, argv2);
317 if (rrd_test_error()) {
318 Tcl_AppendResult(interp, "RRD Error: ",
319 rrd_get_error(), (char *) NULL);
330 * The following structure defines the commands in the Rrd extension.
334 char *name; /* Name of the command. */
335 Tcl_CmdProc *proc; /* Procedure for command. */
338 static CmdInfo rrdCmds[] = {
339 { "Rrd::create", Rrd_Create },
340 { "Rrd::dump", Rrd_Dump },
341 { "Rrd::last", Rrd_Last },
342 { "Rrd::update", Rrd_Update },
343 { "Rrd::fetch", Rrd_Fetch },
344 { "Rrd::graph", Rrd_Graph },
345 { "Rrd::tune", Rrd_Tune },
346 { "Rrd::resize", Rrd_Resize },
347 { "Rrd::restore", Rrd_Restore },
348 { (char *) NULL, (Tcl_CmdProc *) NULL }
354 Tclrrd_Init(interp, safe)
361 if (Tcl_PkgRequire(interp, "Tcl", TCL_VERSION, 1) == NULL) {
365 Tcl_SetVar2(interp, "rrd", "version", VERSION, TCL_GLOBAL_ONLY);
367 for (cmdInfoPtr = rrdCmds; cmdInfoPtr->name != NULL; cmdInfoPtr++) {
369 * Check if the command already exists and return an error
370 * to ensure we detect name clashes while loading the Rrd
373 if (Tcl_GetCommandInfo(interp, cmdInfoPtr->name, &info)) {
374 Tcl_AppendResult(interp, "command \"", cmdInfoPtr->name,
375 "\" already exists", (char *) NULL);
378 Tcl_CreateCommand(interp, cmdInfoPtr->name, cmdInfoPtr->proc,
379 (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
382 if (Tcl_PkgProvide(interp, "Rrd", VERSION) != TCL_OK) {