template.c

   1 /*
   2  * cOpyright (c) 2004 Teodor Sigaev <teodor@sigaev.ru>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *        notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *        notice, this list of conditions and the following disclaimer in the
  12  *        documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *        may be used to endorse or promote products derived from this software
  15  *        without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/types.h>
  31 #include <string.h>
  32
  33 #include "tmalloc.h"
  34 #include "tlog.h"
  35 #include "template.h"
  36
  37 #define MAXDEPTH        (128)
  38
  39 typedef struct ParseState {
  40         int                     depth;
  41         char            *basename;
  42         Template        tmpl;
  43 } ParseState;
  44
  45 static  char *
  46 getFilename(ParseState *state, char *filename) {
  47         int     len = 1 /* \0 */ + 1 /* / */ + strlen(filename);
  48         char    *res;
  49
  50         if ( *filename == '/' )
  51                 return filename;
  52
  53         if ( state->basename && *state->basename )
  54                 len += strlen(state->basename);
  55
  56         res = mcalloc(state->tmpl->templateContext, sizeof(char) * len);
  57         len = 0;
  58
  59         if ( state->basename && *state->basename ) {
  60                 len = strlen(state->basename);
  61                 memcpy( res, state->basename, len );
  62                 res[len++] = '/';
  63         }
  64
  65         memcpy( res+len, filename, strlen(filename));
  66         res[ len + strlen(filename) ] = '\0';
  67
  68         return res;
  69 }
  70
  71 static int recursiveReadTemplate( ParseState *state, Template  tmptmpl, char *filename );
  72
  73 static int
  74 findIncludes(ParseState *state, TemplateNode *node) {
  75         TemplateData    tmp;
  76         GListCell               *cell;
  77
  78         tmp.templateContext = state->tmpl->templateContext;
  79
  80         if (node == NULL || *node == NULL)
  81                 return 0;
  82
  83         switch((*node)->type) {
  84                 case    IncludeNode:
  85                         tmp.tree = NULL;
  86                         if ( recursiveReadTemplate(state, &tmp, (*node)->nodeData.includeFile) != 0 )
  87                                 return 1;
  88                         *node = tmp.tree;
  89                         break;
  90                 case    LoopNode:
  91                         if ( findIncludes(state, &( (*node)->nodeData.loop.bodyNode )) != 0 )
  92                                 return 1;
  93                         break;
  94                 case    ConditionNode:
  95                         if ( findIncludes(state, &( (*node)->nodeData.condition.ifNode )) != 0 ||
  96                                         findIncludes(state, &( (*node)->nodeData.condition.elseNode )) != 0 )
  97                                 return 1;
  98                         break;
  99                 case    CollectionNode:
 100                         GListForeach(cell, (*node)->nodeData.children) {
 101                                 TemplateNode    chld = (TemplateNode)GLCELL_DATA(cell);
 102
 103                                 if ( findIncludes(state, &chld) != 0 )
 104                                         return 1;
 105
 106                                 GLCELL_DATA(cell) = chld;
 107                         }
 108                         break;
 109                 case    TextNode:
 110                 case    VariableNode:
 111                         break;
 112                 default:
 113                         tlog(TL_CRIT|TL_EXIT, "unknown node type: %d", (*node)->type);
 114         }
 115
 116         return 0;
 117 }
 118
 119 static int
 120 recursiveReadTemplate( ParseState *state, Template      tmptmpl, char *filename ) {
 121         int     err;
 122         char    *fn = getFilename(state, filename);
 123
 124         if ( state->depth > MAXDEPTH ) {
 125                 tlog(TL_ALARM, "too many depth of included templates");
 126                 return 4;
 127         }
 128
 129         if ( tmptmpl == NULL )
 130                 tmptmpl = state->tmpl;
 131
 132         if ( (err=parseTemplateFile( tmptmpl, fn )) != 0 )
 133                 return err;
 134
 135         state->depth++;
 136
 137         if ( (err=findIncludes(state, &(tmptmpl->tree))) != 0 )
 138                 return err;
 139
 140         state->depth--;
 141
 142         return 0;
 143 }
 144
 145 static char*
 146 qualifyVarname(Template tmpl, TemplateNode loopParentNode, char *varName, int *varNameLength) {
 147         int len;
 148         char *tmp;
 149
 150         if ( ! loopParentNode )
 151                 return varName;
 152
 153         len = loopParentNode->nodeData.loop.varNameLength + *varNameLength + 2;
 154         tmp = mcalloc(tmpl->templateContext, len);
 155         len = loopParentNode->nodeData.loop.varNameLength;
 156         memcpy( tmp, loopParentNode->nodeData.loop.varName, len);
 157         tmp[ len++ ] = '.';
 158         memcpy( tmp + len, varName, *varNameLength);
 159         len+=*varNameLength;
 160         tmp[ len ] = '\0';
 161
 162         *varNameLength = len;
 163         return tmp;
 164 }
 165
 166 static int
 167 checkSpecialVariable(int flags, char *varName) {
 168         if ( strcmp(varName, "__first") == 0 ) {
 169                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 170                 flags |= TND___FIRST;
 171         } else if ( strcmp(varName, "__last") == 0 ) {
 172                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 173                 flags |= TND___LAST;
 174         } else if ( strcmp(varName, "__counter") == 0 ) {
 175                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 176                 flags |= TND___COUNTER;
 177         } else if ( strcmp(varName, "__odd") == 0 ) {
 178                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 179                 flags |= TND___ODD;
 180         } else if ( strcmp(varName, "__even") == 0 ) {
 181                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 182                 flags |= TND___EVEN;
 183         } else if ( strcmp(varName, "__size") == 0 ) {
 184                 flags &= ~TND_GLOBAL; /* special vars cannot be global */
 185                 flags |= TND___SIZE;
 186         }
 187
 188         return flags;
 189 }
 190
 191 static VariableValue
 192 findVariable( Template tmpl, TemplateNode loopParentNode, int flags, char *varName, int varNameLength ) {
 193         VariableValue   *pvarval;
 194
 195         if ( (pvarval = SFSFindData(&tmpl->variables, varName, varNameLength)) == NULL ) {
 196                 VariableValue           pdata = mc0alloc(tmpl->templateContext, sizeof(VariableValueData));
 197                 SFSDataIO                       in;
 198
 199                 in.key = varName;
 200                 in.keylen = varNameLength;
 201                 in.data = &pdata;
 202
 203                 SFSAdd(&tmpl->variables, &in);
 204
 205                 if ( loopParentNode && (flags & TND_GLOBAL) == 0 ) {
 206                         /*
 207                          * copy special flags to support new inform loopParentNode
 208                          */
 209                         pdata->flags |=  flags & TND__SPECIALMASK;
 210
 211                         if ( flags & ( TND___FIRST | TND___LAST | TND___ODD | TND___EVEN ) )
 212                                 pdata->type = valueBool;
 213                         else if ( flags & (TND___COUNTER | TND___SIZE) )
 214                                 pdata->type = valueInt;
 215                         else
 216                                 pdata->type = valuePointer;
 217
 218                         loopParentNode->nodeData.loop.listVarValues =
 219                                         GListPush( loopParentNode->nodeData.loop.listVarValues, pdata );
 220                 }
 221
 222                 return pdata;
 223         }
 224
 225         return *pvarval;
 226 }
 227
 228 static int
 229 addLoop(Template tmpl, TemplateNode node, TemplateNode loopParentNode) {
 230         SFSDataIO               in;
 231
 232         if ( SFSFindData(&tmpl->variables, node->nodeData.loop.varName, node->nodeData.loop.varNameLength) != NULL ) {
 233                 tlog(TL_CRIT,"Loop marked '%s' is already defined", node->nodeData.loop.varName);
 234                 return 1;
 235         }
 236
 237         in.key = node->nodeData.loop.varName;
 238         in.keylen = node->nodeData.loop.varNameLength;
 239         in.data = &node;
 240
 241         SFSAdd(&tmpl->variables, &in);
 242
 243         if ( loopParentNode )
 244                 loopParentNode->nodeData.loop.childrenLoop =
 245                         GListPush( loopParentNode->nodeData.loop.childrenLoop, node );
 246
 247         return 0;
 248 }
 249
 250 static int
 251 compileTree( Template tmpl, TemplateNode node, TemplateNode loopParentNode ) {
 252         GListCell               *cell;
 253
 254         if ( !node )
 255                 return 0;
 256
 257         switch(node->type) {
 258                 case LoopNode:
 259                         node->nodeData.loop.varName = qualifyVarname(tmpl, loopParentNode,
 260                                                                                         node->nodeData.loop.varName,
 261                                                                                         &node->nodeData.loop.varNameLength);
 262                         if ( compileTree(tmpl, node->nodeData.loop.bodyNode, node) )
 263                                         return 1;
 264
 265                         if ( addLoop( tmpl, node, loopParentNode ) )
 266                                 return 1;
 267                         break;
 268                 case ConditionNode:
 269                         node->nodeData.condition.flags = checkSpecialVariable(
 270                                                                                                 node->nodeData.condition.flags,
 271                                                                                                 node->nodeData.condition.varName );
 272
 273                         if ( (node->nodeData.condition.flags & TND_GLOBAL) == 0 )
 274                                 node->nodeData.condition.varName = qualifyVarname(tmpl, loopParentNode,
 275                                                                                                         node->nodeData.condition.varName,
 276                                                                                                         &node->nodeData.condition.varNameLength);
 277
 278                         node->nodeData.condition.value = findVariable( tmpl, loopParentNode,
 279                                                                                                 node->nodeData.condition.flags,
 280                                                                                                 node->nodeData.condition.varName,
 281                                                                                                 node->nodeData.condition.varNameLength );
 282
 283                         if ( compileTree(tmpl, node->nodeData.condition.ifNode, loopParentNode) )
 284                                         return 1;
 285                         if ( compileTree(tmpl, node->nodeData.condition.elseNode, loopParentNode) )
 286                                         return 1;
 287                         break;
 288                 case CollectionNode:
 289                         GListForeach(cell, node->nodeData.children) {
 290                                 TemplateNode    chld = (TemplateNode)GLCELL_DATA(cell);
 291
 292                                 if ( compileTree(tmpl, chld, loopParentNode) )
 293                                         return 1;
 294                         }
 295                         break;
 296                 case VariableNode:
 297                         node->nodeData.variable.flags = checkSpecialVariable(
 298                                                                                                 node->nodeData.variable.flags,
 299                                                                                                 node->nodeData.variable.varName );
 300
 301                         if ( (node->nodeData.variable.flags & TND_GLOBAL) == 0 )
 302                                 node->nodeData.variable.varName = qualifyVarname(tmpl, loopParentNode,
 303                                                                                                         node->nodeData.variable.varName,
 304                                                                                                         &node->nodeData.variable.varNameLength);
 305
 306                         node->nodeData.variable.value = findVariable( tmpl, loopParentNode,
 307                                                                                                 node->nodeData.variable.flags,
 308                                                                                                 node->nodeData.variable.varName,
 309                                                                                                 node->nodeData.variable.varNameLength );
 310                         break;
 311                 case IncludeNode:
 312                         tlog(TL_CRIT|TL_EXIT, "unexpected IncludeNode");
 313                         break;
 314                 case TextNode:
 315                         break;
 316                 default:
 317                         tlog(TL_CRIT|TL_EXIT, "unknown node type: %d", node->type);
 318         }
 319
 320         return 0;
 321 }
 322
 323 int
 324 initTemplate( Template tmpl, MemoryContext *mc, char *basedir, char *filename ) {
 325         ParseState      state;
 326         int err;
 327
 328         state.depth = 0;
 329         state.tmpl = tmpl;
 330         state.basename = basedir;
 331
 332         memset(tmpl, 0, sizeof(TemplateData));
 333         tmpl->templateContext = mc;
 334         SFSInit_dp(&tmpl->variables, sizeof(void*), NULL);
 335
 336         if ( (err=recursiveReadTemplate(&state, NULL, filename))!=0 )
 337                 return err;
 338         if ( (err=compileTree( tmpl, tmpl->tree, NULL ))!=0 )
 339                 return err;
 340
 341         return 0;
 342 }
 343
 344 void
 345 resetTemplate( Template tmpl ) {
 346         SFSDataIO       out;
 347         GListCell       *cell;
 348
 349         SFSIteratorStart( &tmpl->variables );
 350
 351         while( SFSIterate( &tmpl->variables, &out ) ) {
 352                 VariableValue   varval = *(VariableValue*) out.data;
 353
 354                 if ( varval->type >= valueInt )
 355                         varval->flags &= ~TND_DEFINED;
 356                 else if ( varval->type == LoopNode ) {
 357                         TemplateNode    node = (TemplateNode) varval;
 358
 359                         GListForeach( cell, node->nodeData.loop.listVarValues ) {
 360                                 varval = (VariableValue) GLCELL_DATA(cell);
 361
 362                                 if ( varval->type == valuePointer )
 363                                         varval->value.ptrValue = NULL;
 364                         }
 365
 366                         GListForeach( cell, node->nodeData.loop.listInstance ) {
 367                                 LoopInstance instance = GLCELL_DATA(cell);
 368
 369                                 GListFree(instance->rowValues );
 370                         }
 371                         GListTruncate( node->nodeData.loop.listInstance, 0 );
 372                 }
 373         }
 374 }
 375
 376 static void
 377 freeNode( TemplateNode node ) {
 378         GListCell   *cell;
 379
 380         if (!node)
 381                 return;
 382
 383         switch (node->type) {
 384                 case    LoopNode:
 385                         freeNode( node->nodeData.loop.bodyNode );
 386                         GListFree( node->nodeData.loop.childrenLoop );
 387                         GListFree( node->nodeData.loop.listVarValues );
 388
 389                         GListForeach( cell, node->nodeData.loop.listInstance ) {
 390                                 LoopInstance instance = GLCELL_DATA(cell);
 391
 392                                 GListFree(instance->rowValues );
 393                         }
 394                         GListFree( node->nodeData.loop.listInstance );
 395                         break;
 396                 case    CollectionNode:
 397                         GListForeach( cell, node->nodeData.children )
 398                                 freeNode( (TemplateNode)GLCELL_DATA(cell) );
 399                         GListFree( node->nodeData.children );
 400                         break;
 401                 case    ConditionNode:
 402                         freeNode( node->nodeData.condition.ifNode );
 403                         freeNode( node->nodeData.condition.elseNode );
 404                         break;
 405                 case    IncludeNode:
 406                 case    VariableNode:
 407                 case    TextNode:
 408                 default:
 409                         break;
 410         }
 411 }
 412
 413 void
 414 freeTemplate( Template tmpl ) {
 415         SFSFree( &tmpl->variables, NULL );
 416         freeNode( tmpl->tree );
 417 }
 418
 419 static void
 420 newLoopInstance( Template tmpl, TemplateNode node ) {
 421         node->nodeData.loop.listInstance = GListPush(
 422                                 node->nodeData.loop.listInstance,
 423                                 mc0alloc(tmpl->templateContext, sizeof(LoopInstanceData) ) );
 424 }
 425
 426 int
 427 addTemplateRow( Template tmpl, char * key ) {
 428         TemplateNode    *pnode, node;
 429         char            *lkey = strlower(mcstrdup(tmpl->templateContext, key));
 430         GListCell               *cell;
 431         VariableValue   varvals;
 432         int                             i=0, nvar;
 433         LoopInstance    instance;
 434
 435         pnode = SFSFindData(&tmpl->variables, lkey, 0);
 436         mcfree(lkey);
 437
 438         if ( pnode == NULL )
 439                 return TVAR_NOTFOUND;
 440
 441         node = *pnode;
 442
 443         if ( node->type != LoopNode )
 444                 return TVAR_FORBIDDEN;
 445
 446         nvar = GLIST_LENGTH( node->nodeData.loop.listVarValues );
 447         if ( nvar == 0 )
 448                 /* loop without vars can not be looped */
 449                 return TVAR_NOROW;
 450
 451         if ( GLIST_LENGTH(node->nodeData.loop.listInstance) == 0 )
 452                 newLoopInstance(tmpl, node);
 453
 454         GListForeach( cell, node->nodeData.loop.childrenLoop )
 455                 newLoopInstance( tmpl, GLCELL_DATA(cell) );
 456
 457         varvals = mcalloc( tmpl->templateContext, sizeof(VariableValueData) * nvar );
 458         GListForeach( cell, node->nodeData.loop.listVarValues ) {
 459                 VariableValue   vv = GLCELL_DATA(cell);
 460
 461                 vv->value.ptrValue = varvals + i;
 462                 varvals[i].flags = 0;
 463                 i++;
 464         }
 465
 466         instance = GLCELL_DATA(GLIST_TAIL(node->nodeData.loop.listInstance));
 467
 468         instance->nrow++;
 469         instance->rowValues = GListPush( instance->rowValues, varvals );
 470
 471         return TVAR_OK;
 472 }
 473
 474 static VariableValueData storage;
 475
 476 static int
 477 setTemplateValue( Template tmpl, char *key) {
 478         VariableValue   *pvarval, varval;
 479         char                    *lkey = strlower(mcstrdup(tmpl->templateContext, key));
 480
 481         pvarval = SFSFindData(&tmpl->variables, lkey, 0);
 482         mcfree(lkey);
 483
 484         if ( pvarval == NULL )
 485                 return TVAR_NOTFOUND;
 486
 487         varval = *pvarval;
 488
 489         if ( varval->type != 0 && varval->type < valueInt ) {
 490                 return TVAR_LOOPMARK;
 491         } else if ( varval->type == valuePointer ) {
 492                 /* looped variable */
 493                 varval = varval->value.ptrValue;
 494
 495                 if ( varval == NULL )
 496                         return TVAR_NOROW;
 497
 498                 tassert( (varval->type & TND_GLOBAL) == 0 );
 499         }
 500
 501         if ( varval->flags & TND__SPECIALMASK )
 502                 return TVAR_FORBIDDEN;
 503
 504         if ( storage.flags & TND_DEFINED ) {
 505                 varval->flags |= TND_DEFINED;
 506                 varval->type = storage.type;
 507                 varval->value = storage.value;
 508         } else {
 509                 varval->flags &= ~TND_DEFINED;
 510         }
 511
 512         return TVAR_OK;
 513 }
 514
 515
 516 int
 517 setTemplateValueInt( Template tmpl, char * key, int val ) {
 518         storage.flags = TND_DEFINED;
 519         storage.type = valueInt;
 520         storage.value.intValue = val;
 521         return setTemplateValue( tmpl, key );
 522 }
 523
 524 int
 525 setTemplateValueString( Template tmpl, char * key, char * val ) {
 526         storage.flags = TND_DEFINED;
 527         storage.type = valueString;
 528         storage.value.stringValue = val;
 529         return setTemplateValue( tmpl, key );
 530 }
 531
 532 int
 533 setTemplateValueTime( Template tmpl, char * key, time_t val ) {
 534         storage.flags = TND_DEFINED;
 535         storage.type = valueTime;
 536         storage.value.timeValue = val;
 537         return setTemplateValue( tmpl, key );
 538 }
 539
 540 int
 541 setTemplateValueBool( Template tmpl, char * key, int val ) {
 542         storage.flags = TND_DEFINED;
 543         storage.type = valueBool;
 544         storage.value.boolValue = val;
 545         return setTemplateValue( tmpl, key );
 546 }
 547
 548 int
 549 setTemplateValueDouble( Template tmpl, char * key, double val ) {
 550         storage.flags = TND_DEFINED;
 551         storage.type = valueDouble;
 552         storage.value.boolValue = val;
 553         return setTemplateValue( tmpl, key );
 554 }
 555
 556 int
 557 setTemplateValueUndefined( Template tmpl, char * key ) {
 558         storage.flags = 0;
 559         return setTemplateValue( tmpl, key );
 560 }
 561
 562 static char *
 563 printVal( Template tmpl, VariableValue value, int *len, char *format ) {
 564         int             printedlen;
 565         char    *res;
 566
 567         *len = 0;
 568
 569         if ( value->type == valueTime ) {
 570                 printedlen = 64;
 571                 res = mcalloc( tmpl->templateContext, printedlen+1 );
 572
 573                 while ( (printedlen = strftime(NULL, 0, (format) ? format : "%Y-%m-%d %H:%M:%S",
 574                                                                                                 localtime(&value->value.timeValue))) == 0 ) {
 575                         printedlen *= 2;
 576                         res=mcrealloc(res, printedlen);
 577                 }
 578
 579                 *len = printedlen;
 580                 return res;
 581         }
 582
 583         switch (value->type) {
 584                 case valueInt:
 585                         printedlen = snprintf(NULL, 0, (format) ? format : "%d", value->value.intValue);
 586                         break;
 587                 case valueString:
 588                         if ( value->value.stringValue == NULL || *value->value.stringValue == '\0' )
 589                                 return NULL;
 590                         printedlen = snprintf(NULL, 0, (format) ? format : "%s", value->value.stringValue);
 591                         break;
 592                 case valueBool:
 593                         printedlen = snprintf(NULL, 0, "%s", (value->value.boolValue) ? "true" : "false" );
 594                         break;
 595                 case valueDouble:
 596                         printedlen = snprintf(NULL, 0, (format) ? format : "%f", value->value.doubleValue);
 597                         break;
 598                 case valuePointer:
 599                 case valueTime:
 600                 default:
 601                         return NULL;
 602         }
 603
 604         res = mcalloc( tmpl->templateContext, printedlen+1 );
 605
 606         switch (value->type) {
 607                 case valueInt:
 608                         printedlen = snprintf(res, printedlen+1, (format) ? format : "%d", value->value.intValue);
 609                         break;
 610                 case valueString:
 611                         printedlen = snprintf(res, printedlen+1, (format) ? format : "%s", value->value.stringValue);
 612                         break;
 613                 case valueBool:
 614                         printedlen = snprintf(res, printedlen+1, "%s", (value->value.boolValue) ? "true" : "false" );
 615                         break;
 616                 case valueDouble:
 617                         printedlen = snprintf(res, printedlen+1, (format) ? format : "%f", value->value.doubleValue);
 618                         break;
 619                 case valuePointer:
 620                 case valueTime:
 621                 default:
 622                         return NULL;
 623         }
 624
 625         *len = printedlen;
 626
 627         return res;
 628 }
 629
 630 static int
 631 isVariable(VariableValue value, int flags) {
 632         if ( value == NULL )
 633                 return 0;
 634
 635         if ( flags & TND_DEFINED ) {
 636                 return (value->flags & TND_DEFINED);
 637         } else {
 638                 switch (value->type) {
 639                         case valueInt:
 640                                 return value->value.intValue;
 641                         case valueString:
 642                                 if ( value->value.stringValue == NULL || *value->value.stringValue == '\0' )
 643                                         return 0;
 644                                 return 1;
 645                         case valueTime:
 646                                 return ( value->value.timeValue > 0 ) ? 1 : 0;
 647                         case valueBool:
 648                                 return value->value.boolValue;
 649                         case valueDouble:
 650                                 return (value->value.doubleValue == 0) ? 0 : 1;
 651                         case valuePointer:
 652                         default:
 653                                 return 0;
 654                 }
 655         }
 656
 657         return 0;
 658 }
 659
 660 static void
 661 printNode( Template tmpl, TemplateNode node ) {
 662         GListCell   *cell;
 663         VariableValue   value;
 664
 665         if (!node)
 666                 return;
 667
 668         switch (node->type) {
 669                 case    LoopNode:
 670                         {
 671                                 GListCell               *cell = GListShift( node->nodeData.loop.listInstance );
 672                                 LoopInstance    instance;
 673                                 int                             i;
 674
 675                                 if ( cell == NULL )
 676                                         return;
 677
 678                                 instance = GLCELL_DATA(cell);
 679                                 GListFreeCell( node->nodeData.loop.listInstance, cell );
 680
 681                                 for(i=0; i<instance->nrow;i++) {
 682                                         VariableValue   varvals;
 683                                         int                             j = 0;
 684
 685                                         cell = GListShift( instance->rowValues );
 686                                         varvals = GLCELL_DATA(cell);
 687                                         GListFreeCell( instance->rowValues, cell );
 688
 689                                         GListForeach( cell, node->nodeData.loop.listVarValues ) {
 690                                                 value = (VariableValue)GLCELL_DATA(cell);
 691
 692                                                 if ( value->flags & TND___FIRST ) {
 693                                                         if ( i==0 ) {
 694                                                                 value->flags |= TND_DEFINED;
 695                                                                 value->value.intValue = 1;
 696                                                         }  else {
 697                                                                 value->flags &= ~TND_DEFINED;
 698                                                                 value->value.intValue = 0;
 699                                                         }
 700                                                 } else if ( value->flags & TND___LAST ) {
 701                                                         if ( i==instance->nrow - 1 ) {
 702                                                                 value->flags |= TND_DEFINED;
 703                                                                 value->value.intValue = 1;
 704                                                         }  else {
 705                                                                 value->flags &= ~TND_DEFINED;
 706                                                                 value->value.intValue = 0;
 707                                                         }
 708                                                 } else if ( value->flags & TND___COUNTER ) {
 709                                                         value->flags |= TND_DEFINED;
 710                                                         value->value.intValue = i+1;
 711                                                 } else if ( value->flags & TND___SIZE ) {
 712                                                         value->flags |= TND_DEFINED;
 713                                                         value->value.intValue = instance->nrow;
 714                                                 } else if ( value->flags & TND___ODD ) {
 715                                                         value->flags |= TND_DEFINED;
 716                                                         value->value.boolValue = (i%2) ? 0 : 1 ;
 717                                                 } else if ( value->flags & TND___EVEN ) {
 718                                                         value->flags |= TND_DEFINED;
 719                                                         value->value.boolValue = (i%2) ? 1 : 0 ;
 720                                                 } else {
 721                                                         tassert( value->type == valuePointer );
 722                                                         value->value.ptrValue = varvals+j;
 723                                                 }
 724
 725                                                 j++;
 726                                         }
 727                                         printNode( tmpl, node->nodeData.loop.bodyNode );
 728                                 }
 729                         }
 730                         break;
 731                 case    ConditionNode:
 732                         value = node->nodeData.condition.value;
 733                         if ( value->type == valuePointer )
 734                                 value = value->value.ptrValue;
 735
 736                         if ( node->nodeData.condition.flags & TND_NOT ) {
 737                                 if ( isVariable(value, node->nodeData.condition.flags) )
 738                                         printNode( tmpl, node->nodeData.condition.elseNode );
 739                                 else
 740                                         printNode( tmpl, node->nodeData.condition.ifNode );
 741                         } else {
 742                                 if ( isVariable(value, node->nodeData.condition.flags) )
 743                                         printNode( tmpl, node->nodeData.condition.ifNode );
 744                                 else
 745                                         printNode( tmpl, node->nodeData.condition.elseNode );
 746                         }
 747                         break;
 748                 case    CollectionNode:
 749                         GListForeach( cell, node->nodeData.children )
 750                                 printNode( tmpl, (TemplateNode)GLCELL_DATA(cell) );
 751                         break;
 752                 case    VariableNode:
 753                         value = node->nodeData.variable.value;
 754                         if ( value->type == valuePointer )
 755                                 value = value->value.ptrValue;
 756
 757                         if ( value && (value->flags & TND_DEFINED) != 0 ) {
 758                                 int len;
 759                                 char *res;
 760
 761                                 res = printVal(tmpl, value, &len, node->nodeData.variable.formatValue);
 762
 763                                 if ( (node->nodeData.variable.flags & TND_HTMLESCAPE) && tmpl->htmlEscape )
 764                                         res = tmpl->htmlEscape(res, &len);
 765                                 if ( (node->nodeData.variable.flags & TND_URLESCAPE) && tmpl->urlEscape )
 766                                         res = tmpl->urlEscape(res, &len);
 767
 768                                 if ( res && len>0  ) {
 769                                         tmpl->printString( res, len );
 770                                         mcfree(res);
 771                                 }
 772                         } else if ( node->nodeData.variable.defaultValue ) {
 773                                 tmpl->printString( node->nodeData.variable.defaultValue,
 774                                                                         strlen( node->nodeData.variable.defaultValue ) );
 775                         }
 776                         break;
 777                 case    TextNode:
 778                         tmpl->printString( node->nodeData.text.value,  node->nodeData.text.valueLength );
 779                         break;
 780                 case    IncludeNode:
 781                 default:
 782                         break;
 783         }
 784 }
 785
 786 int
 787 printTemplate( Template tmpl ) {
 788         if (!tmpl->printString)
 789                 return 1;
 790
 791         printNode(tmpl, tmpl->tree);
 792
 793         return 0;
 794 }
 795
 796 static void
 797 recursiveDump(Template tmpl,  TemplateNode node, int level) {
 798         GListCell               *cell;
 799
 800         if (node == NULL ) {
 801                 printf("%d void\n", level);
 802                 return;
 803         }
 804
 805         switch(node->type) {
 806                 case    IncludeNode:
 807                         printf("%d IncludeNode\n", level);
 808                         break;
 809                 case    LoopNode:
 810                         printf("%d LoopNode\n", level);
 811                         recursiveDump(tmpl, node->nodeData.loop.bodyNode, level+1);
 812                         break;
 813                 case    ConditionNode:
 814                         printf("%d ConditionNode\n", level);
 815                         recursiveDump(tmpl, node->nodeData.condition.ifNode, level+1);
 816                         recursiveDump(tmpl, node->nodeData.condition.elseNode, level+1);
 817                         break;
 818                 case    CollectionNode:
 819                         printf("%d CollectionNode\n", level);
 820                         GListForeach(cell, node->nodeData.children)
 821                                 recursiveDump(tmpl, (TemplateNode)GLCELL_DATA(cell), level+1);
 822                         break;
 823                 case    TextNode:
 824                         printf("%d TextNode len:%d\n", level, node->nodeData.text.valueLength);
 825                         break;
 826                 case    VariableNode:
 827                         printf("%d VariableNode '%s'\n", level, node->nodeData.variable.varName);
 828                         break;
 829                 default:
 830                         tlog(TL_CRIT|TL_EXIT, "unknown node type: %d", node->type);
 831         }
 832 }
 833
 834 void
 835 dumpTemplate( Template tmpl ) {
 836         recursiveDump(tmpl, tmpl->tree, 0);
 837 }