Annotation of libwww/Library/src/HTAnchor.c, revision 1.71
1.14 frystyk 1: /* HTAnchor.c
2: ** HYPERTEXT "ANCHOR" OBJECT
1.1 timbl 3: **
1.22 frystyk 4: ** (c) COPYRIGHT MIT 1995.
1.14 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
1.71 ! frystyk 6: ** @(#) $Id: HTAnchor.c,v 1.70 1998/01/04 16:53:52 frystyk Exp $
1.14 frystyk 7: **
8: ** An anchor represents a region of a hypertext document which is
9: ** linked to another anchor in the same or a different document.
1.1 timbl 10: **
11: ** History
12: ** Nov 1990 Written in Objective-C for the NeXT browser (TBL)
13: ** 24-Oct-1991 (JFG), written in C, browser-independant
14: ** 21-Nov-1991 (JFG), first complete version
1.41 frystyk 15: ** 3-May-1995 (HF), Added a lot of methods and other stuff made an object
1.54 frystyk 16: ** July 1996 Patch for adding hash of children Michael Farrar
1.1 timbl 17: */
18:
1.16 frystyk 19: /* Library include files */
1.46 frystyk 20: #include "sysdep.h"
1.50 frystyk 21: #include "WWWUtil.h"
1.7 luotonen 22: #include "HTFormat.h"
1.1 timbl 23: #include "HTParse.h"
1.24 frystyk 24: #include "HTMethod.h"
1.63 frystyk 25: #include "HTWWWStr.h"
1.41 frystyk 26: #include "HTAncMan.h" /* Implemented here */
1.11 frystyk 27:
1.70 frystyk 28: #define HASH_SIZE 599 /* Arbitrary prime. Memory/speed tradeoff */
29: #define CHILD_HASH_SIZE 97 /* Often smaller than hash of parents */
1.1 timbl 30:
31: PRIVATE HTList **adult_table=0; /* Point to table of lists of all parents */
32:
1.17 frystyk 33: /* ------------------------------------------------------------------------- */
34: /* Creation Methods */
35: /* ------------------------------------------------------------------------- */
36:
37: /*
1.1 timbl 38: ** Do not use "new" by itself outside this module. In order to enforce
39: ** consistency, we insist that you furnish more information about the
40: ** anchor you are creating : use newWithParent or newWithAddress.
41: */
1.35 frystyk 42: PRIVATE HTParentAnchor * HTParentAnchor_new (void)
1.1 timbl 43: {
1.43 frystyk 44: HTParentAnchor *newAnchor;
1.54 frystyk 45: if ((newAnchor = (HTParentAnchor *) HT_CALLOC(1, sizeof (HTParentAnchor))) == NULL)
1.43 frystyk 46: HT_OUTOFMEM("HTParentAnchor_new");
1.16 frystyk 47: newAnchor->parent = newAnchor;
1.17 frystyk 48: newAnchor->content_type = WWW_UNKNOWN;
1.24 frystyk 49: newAnchor->mainLink.method = METHOD_INVALID;
1.41 frystyk 50: newAnchor->content_length = -1; /* howcome 6 dec 95 */
1.28 frystyk 51: newAnchor->date = (time_t) -1;
52: newAnchor->expires = (time_t) -1;
53: newAnchor->last_modified = (time_t) -1;
1.59 frystyk 54: newAnchor->age = (time_t) -1;
1.16 frystyk 55: return newAnchor;
1.1 timbl 56: }
57:
1.16 frystyk 58:
1.35 frystyk 59: PRIVATE HTChildAnchor * HTChildAnchor_new (void)
1.1 timbl 60: {
1.43 frystyk 61: HTChildAnchor *child;
62: if ((child = (HTChildAnchor *) HT_CALLOC(1, sizeof(HTChildAnchor))) == NULL)
63: HT_OUTOFMEM("HTChildAnchor_new");
1.33 frystyk 64: return child;
1.1 timbl 65: }
66:
1.17 frystyk 67: /* Create new or find old child anchor
68: ** -----------------------------------
1.1 timbl 69: **
1.3 timbl 70: ** Me one is for a new anchor being edited into an existing
1.17 frystyk 71: ** document. The parent anchor must already exist. All
72: ** children without tags (no NAME attribut) points to the same NULL
73: ** child.
1.54 frystyk 74: ** Children are now hashed for performance reasons. Thanks to
75: ** Michael Farrar
1.1 timbl 76: */
1.35 frystyk 77: PUBLIC HTChildAnchor * HTAnchor_findChild (HTParentAnchor * parent,
1.46 frystyk 78: const char * tag)
1.1 timbl 79: {
1.54 frystyk 80: HTChildAnchor * child = NULL;
81: HTList * kids = NULL;
1.17 frystyk 82: if (!parent) {
1.54 frystyk 83: if (ANCH_TRACE) HTTrace("Child Anchor Bad argument\n");
1.17 frystyk 84: return NULL;
85: }
1.1 timbl 86:
1.54 frystyk 87: /* Find a hash for this tag (if any) */
88: {
89: int hash = 0;
90: /*
91: ** If tag is empty then use hash value 0
92: */
93: if (tag) {
94: const char * ptr = tag;
95: for(; *ptr; ptr++)
96: hash = (int) ((hash*3 + (*(unsigned char*)ptr)) % CHILD_HASH_SIZE);
97: }
1.55 frystyk 98: if (!parent->children) {
99: if (!(parent->children = (HTList **)
1.54 frystyk 100: HT_CALLOC(CHILD_HASH_SIZE, sizeof(HTList *))))
101: HT_OUTOFMEM("HTAnchor_findChild");
102: }
1.55 frystyk 103: if (!parent->children[hash]) parent->children[hash] = HTList_new();
104: kids = parent->children[hash];
1.54 frystyk 105: }
106:
1.17 frystyk 107: /* First search list of children to see if tag is already there */
1.54 frystyk 108: if (tag && *tag) {
109: HTList * cur = kids;
110: while ((child = (HTChildAnchor *) HTList_nextObject(cur))) {
1.56 frystyk 111: if (child->tag && !strcmp(child->tag, tag)) {
1.54 frystyk 112: if (ANCH_TRACE)
113: HTTrace("Child Anchor %p of parent %p with name `%s' already exists.\n",
114: (void *) child, (void *) parent, tag);
115: return child;
1.1 timbl 116: }
117: }
1.54 frystyk 118: }
119:
120: /* If not found then create a new child anchor */
1.17 frystyk 121: child = HTChildAnchor_new();
1.54 frystyk 122: HTList_addObject(kids, (void *) child);
1.17 frystyk 123: child->parent = parent;
1.54 frystyk 124: if (tag) StrAllocCopy(child->tag, tag);
1.17 frystyk 125: if (ANCH_TRACE)
1.54 frystyk 126: HTTrace("Child Anchor New Anchor %p named `%s' is child of %p\n",
1.46 frystyk 127: (void *) child, tag ? tag : (const char *) "", (void *)parent);
1.17 frystyk 128: return child;
1.1 timbl 129: }
130:
131:
132: /* Create new or find old named anchor
133: ** -----------------------------------
134: **
1.3 timbl 135: ** Me one is for a reference which is found in a document, and might
1.1 timbl 136: ** not be already loaded.
137: ** Note: You are not guaranteed a new anchor -- you might get an old one,
138: ** like with fonts.
139: */
1.46 frystyk 140: PUBLIC HTAnchor * HTAnchor_findAddress (const char * address)
1.1 timbl 141: {
1.16 frystyk 142: char *tag = HTParse (address, "", PARSE_ANCHOR); /* Any tags? */
1.1 timbl 143:
1.16 frystyk 144: /* If the address represents a sub-anchor, we recursively load its parent,
145: then we create a child anchor within that document. */
146: if (*tag) {
1.34 frystyk 147: char *addr = HTParse(address, "", PARSE_ACCESS | PARSE_HOST |
148: PARSE_PATH | PARSE_PUNCTUATION);
149: HTParentAnchor * parent = (HTParentAnchor*) HTAnchor_findAddress(addr);
150: HTChildAnchor * child = HTAnchor_findChild(parent, tag);
1.43 frystyk 151: HT_FREE(addr);
152: HT_FREE(tag);
1.34 frystyk 153: return (HTAnchor *) child;
1.16 frystyk 154: } else { /* Else check whether we have this node */
155: int hash;
1.46 frystyk 156: const char *p;
1.16 frystyk 157: HTList * adults;
158: HTList *grownups;
159: HTParentAnchor * foundAnchor;
1.34 frystyk 160: char *newaddr = NULL;
161: StrAllocCopy(newaddr, address); /* Get our own copy */
1.43 frystyk 162: HT_FREE(tag);
1.38 frystyk 163: newaddr = HTSimplify(&newaddr);
1.34 frystyk 164:
1.16 frystyk 165: /* Select list from hash table */
166: for(p=newaddr, hash=0; *p; p++)
167: hash = (int) ((hash * 3 + (*(unsigned char*)p)) % HASH_SIZE);
1.33 frystyk 168: if (!adult_table) {
1.43 frystyk 169: if ((adult_table = (HTList* *) HT_CALLOC(HASH_SIZE, sizeof(HTList*))) == NULL)
170: HT_OUTOFMEM("HTAnchor_findAddress");
1.33 frystyk 171: }
1.16 frystyk 172: if (!adult_table[hash]) adult_table[hash] = HTList_new();
173: adults = adult_table[hash];
174:
175: /* Search list for anchor */
176: grownups = adults;
177: while ((foundAnchor = (HTParentAnchor *) HTList_nextObject(grownups))){
1.33 frystyk 178: if (!strcmp(foundAnchor->address, newaddr)) {
1.16 frystyk 179: if (ANCH_TRACE)
1.44 eric 180: HTTrace("Find Parent. %p with address `%s' already exists.\n",
1.16 frystyk 181: (void*) foundAnchor, newaddr);
1.43 frystyk 182: HT_FREE(newaddr); /* We already have it */
1.16 frystyk 183: return (HTAnchor *) foundAnchor;
184: }
185: }
186:
187: /* Node not found : create new anchor. */
188: foundAnchor = HTParentAnchor_new();
189: foundAnchor->address = newaddr; /* Remember our copy */
190: HTList_addObject (adults, foundAnchor);
1.44 eric 191: if (ANCH_TRACE) HTTrace("Find Parent. %p with hash %d and address `%s' created\n", (void*)foundAnchor, hash, newaddr);
1.1 timbl 192: return (HTAnchor *) foundAnchor;
193: }
194: }
195:
1.17 frystyk 196: /* Create or find a child anchor with a possible link
197: ** --------------------------------------------------
198: **
199: ** Create new anchor with a given parent and possibly
200: ** a name, and possibly a link to a _relatively_ named anchor.
1.34 frystyk 201: ** All parameters EXCEPT parent can be NULL
1.17 frystyk 202: */
1.34 frystyk 203: PUBLIC HTChildAnchor * HTAnchor_findChildAndLink (HTParentAnchor * parent,
1.46 frystyk 204: const char * tag,
205: const char * href,
1.41 frystyk 206: HTLinkType ltype)
1.17 frystyk 207: {
1.34 frystyk 208: HTChildAnchor * child = HTAnchor_findChild(parent, tag);
1.54 frystyk 209: if (child && href && *href) {
1.53 frystyk 210: char * relative_to = HTAnchor_expandedAddress((HTAnchor *) parent);
1.34 frystyk 211: char * parsed_address = HTParse(href, relative_to, PARSE_ALL);
212: HTAnchor * dest = HTAnchor_findAddress(parsed_address);
1.52 frystyk 213: HTLink_add((HTAnchor *) child, dest, ltype, METHOD_INVALID);
1.43 frystyk 214: HT_FREE(parsed_address);
215: HT_FREE(relative_to);
1.34 frystyk 216: }
217: return child;
1.17 frystyk 218: }
219:
1.52 frystyk 220: /* ------------------------------------------------------------------------- */
221: /* Link Methods */
222: /* ------------------------------------------------------------------------- */
1.28 frystyk 223:
1.41 frystyk 224: /*
225: ** Upgrade the link to the main destination and and downgrade the
226: ** current main link to the list
227: */
228: PUBLIC HTLink * HTAnchor_mainLink (HTAnchor * me)
229: {
230: return me ? &(me->mainLink) : NULL;
231: }
1.28 frystyk 232:
1.41 frystyk 233: PUBLIC BOOL HTAnchor_setMainLink (HTAnchor * me, HTLink * movingLink)
1.28 frystyk 234: {
1.41 frystyk 235: if (!(me && me->links && movingLink &&
236: HTList_removeObject(me->links, movingLink)))
237: return NO;
238: else {
239: /* First push current main link onto top of links list */
1.52 frystyk 240: HTLink * newLink = HTLink_new();
1.42 frystyk 241: memcpy ((void *) newLink, & me->mainLink, sizeof (HTLink));
1.41 frystyk 242: HTList_addObject (me->links, newLink);
243:
1.52 frystyk 244: /* Now make movingLink the new main link, and delete it */
1.42 frystyk 245: memcpy ((void *) &me->mainLink, movingLink, sizeof (HTLink));
1.52 frystyk 246: HTLink_delete(movingLink);
1.28 frystyk 247: return YES;
248: }
249: }
250:
251: /*
1.41 frystyk 252: ** Handling sub links
1.24 frystyk 253: */
1.41 frystyk 254: PUBLIC HTList * HTAnchor_subLinks (HTAnchor * anchor)
1.24 frystyk 255: {
1.41 frystyk 256: return anchor ? anchor->links : NULL;
1.24 frystyk 257: }
258:
1.41 frystyk 259: PUBLIC BOOL HTAnchor_setSubLinks (HTAnchor * anchor, HTList * list)
260: {
261: if (anchor) {
262: anchor->links = list;
263: return YES;
264: }
265: return NO;
266: }
1.24 frystyk 267:
268: /*
1.41 frystyk 269: ** Returns the main destination of this anchor
270: */
271: PUBLIC HTAnchor * HTAnchor_followMainLink (HTAnchor * me)
272: {
1.52 frystyk 273: return me ? HTLink_destination(&me->mainLink) : NULL;
1.71 ! frystyk 274: }
! 275:
! 276: /*
! 277: ** Returns a link with a given link type or NULL if nothing found
! 278: */
! 279: PUBLIC HTLink * HTAnchor_findLinkType (HTAnchor * me, HTLinkType type)
! 280: {
! 281: if (me) {
! 282: HTLink * link = HTAnchor_mainLink(me);
! 283: HTList * sublinks = HTAnchor_subLinks(me);
! 284: if (link && HTLink_type(link) == type)
! 285: return link;
! 286: else if (sublinks) {
! 287: while ((link = (HTLink *) HTList_nextObject (sublinks)))
! 288: if (HTLink_type(link) == type) return link;
! 289: }
! 290: }
! 291: return NULL;
1.17 frystyk 292: }
293:
294: /* ------------------------------------------------------------------------- */
295: /* Deletion Methods */
296: /* ------------------------------------------------------------------------- */
1.1 timbl 297:
298: /* Delete an anchor and possibly related things (auto garbage collection)
299: ** --------------------------------------------
300: **
301: ** The anchor is only deleted if the corresponding document is not loaded.
1.10 frystyk 302: ** All outgoing links from parent and children are deleted, and this
303: ** anchor is removed from the sources list of all its targets.
1.1 timbl 304: ** We also try to delete the targets whose documents are not loaded.
305: ** If this anchor's source list is empty, we delete it and its children.
306: */
307:
1.41 frystyk 308: /* Deletes all the memory allocated in a parent anchor and returns any
309: ** hyperdoc object hanging of this anchor
1.19 frystyk 310: */
1.41 frystyk 311: PRIVATE void * delete_parent (HTParentAnchor * me)
1.19 frystyk 312: {
1.41 frystyk 313: void * doc = me->document;
1.19 frystyk 314:
315: /* Remove link and address information */
1.26 frystyk 316: if (me->links) {
317: HTList *cur = me->links;
318: HTLink *pres;
319: while ((pres = (HTLink *) HTList_nextObject(cur)))
1.52 frystyk 320: HTLink_delete(pres);
1.26 frystyk 321: HTList_delete(me->links);
322: }
1.54 frystyk 323:
324: /* Remove children */
325: if (me->children) {
326: int cnt = 0;
327: for (; cnt<CHILD_HASH_SIZE; cnt++) {
328: if (me->children[cnt]) HTList_delete(me->children[cnt]);
329: }
330: HT_FREE(me->children);
331: }
332:
1.19 frystyk 333: HTList_delete (me->sources);
1.52 frystyk 334: HTList_delete (me->variants);
1.43 frystyk 335: HT_FREE(me->physical);
336: HT_FREE(me->address);
1.19 frystyk 337:
338: /* Then remove entity header information (metainformation) */
1.59 frystyk 339: HTAnchor_clearHeader(me);
1.57 frystyk 340:
1.43 frystyk 341: HT_FREE(me);
1.19 frystyk 342: return doc;
343: }
344:
345:
1.41 frystyk 346: /* Delete a parent anchor and all its children. If a hyperdoc object
347: ** is found hanging off the parent anchor then this is returned
1.19 frystyk 348: */
1.41 frystyk 349: PRIVATE void * delete_family (HTAnchor * me)
1.19 frystyk 350: {
1.64 frystyk 351: HTParentAnchor * parent = NULL;
1.19 frystyk 352: if (!me) {
1.64 frystyk 353: if (ANCH_TRACE) HTTrace("AnchorDelete No anchor found\n");
1.19 frystyk 354: return NULL;
355: }
1.64 frystyk 356: parent = me->parent;
357: if (ANCH_TRACE)
358: HTTrace("AnchorDelete Remove parent %p and children\n", parent);
1.19 frystyk 359:
360: /* Delete children */
361: if (parent->children) {
1.54 frystyk 362: int cnt = 0;
363: for (; cnt<CHILD_HASH_SIZE; cnt++) {
364: HTList * kids = parent->children[cnt];
365: if (kids) {
366: HTChildAnchor * child;
367: while ((child=(HTChildAnchor*)HTList_removeLastObject(kids))) {
368: HT_FREE(child->tag);
369: if (child->links) {
370: HTList * cur = child->links;
371: HTLink * pres;
372: while ((pres = (HTLink *) HTList_nextObject(cur)))
373: HTLink_delete(pres);
374: HTList_delete(child->links);
375: }
376: HT_FREE(child);
377: }
378: HTList_delete(kids);
379: parent->children[cnt] = NULL;
1.26 frystyk 380: }
1.19 frystyk 381: }
382: }
383: return delete_parent(parent);
384: }
385:
386:
387: /* DELETE ALL ANCHORS
388: ** ------------------
389: ** Deletes all anchors and return a list of all the HyperDocs found.
390: ** It is for the application to delete any HyperDocs.
1.39 frystyk 391: ** If NULL then no hyperdocs are returned
1.19 frystyk 392: ** Return YES if OK, else NO
393: */
1.35 frystyk 394: PUBLIC BOOL HTAnchor_deleteAll (HTList * documents)
1.19 frystyk 395: {
396: int cnt;
397: HTList *cur;
1.39 frystyk 398: if (!adult_table)
1.19 frystyk 399: return NO;
400: for (cnt=0; cnt<HASH_SIZE; cnt++) {
401: if ((cur = adult_table[cnt])) {
402: HTParentAnchor *pres;
403: while ((pres = (HTParentAnchor *) HTList_nextObject(cur)) != NULL){
1.41 frystyk 404: void * doc = delete_family((HTAnchor *) pres);
405: if (doc && documents) HTList_addObject(documents, doc);
1.19 frystyk 406: }
407: }
408: HTList_delete(adult_table[cnt]);
409: }
1.43 frystyk 410: HT_FREE(adult_table);
1.19 frystyk 411: return YES;
412: }
413:
414:
1.54 frystyk 415: PRIVATE void delete_links (HTAnchor * me)
1.1 timbl 416: {
1.3 timbl 417: if (! me)
1.1 timbl 418: return;
419:
420: /* Recursively try to delete target anchors */
1.3 timbl 421: if (me->mainLink.dest) {
422: HTParentAnchor *parent = me->mainLink.dest->parent;
423: HTList_removeObject (parent->sources, me);
1.1 timbl 424: if (! parent->document) /* Test here to avoid calling overhead */
425: HTAnchor_delete (parent);
426: }
1.3 timbl 427: if (me->links) { /* Extra destinations */
1.1 timbl 428: HTLink *target;
1.12 frystyk 429: while ((target = (HTLink *) HTList_removeLastObject (me->links))) {
1.1 timbl 430: HTParentAnchor *parent = target->dest->parent;
1.3 timbl 431: HTList_removeObject (parent->sources, me);
1.1 timbl 432: if (! parent->document) /* Test here to avoid calling overhead */
433: HTAnchor_delete (parent);
434: }
435: }
436: }
437:
1.35 frystyk 438: PUBLIC BOOL HTAnchor_delete (HTParentAnchor * me)
1.1 timbl 439: {
1.54 frystyk 440: /* Don't delete if document is loaded */
441: if (!me || me->document) {
442: if (ANCH_TRACE) HTTrace("Anchor...... Not deleted\n");
443: return NO;
444: }
445:
446: /* Recursively try to delete target anchors */
447: delete_links ((HTAnchor *) me);
1.1 timbl 448:
1.54 frystyk 449: if (!HTList_isEmpty(me->sources)) { /* There are still incoming links */
450:
451: /*
452: ** Delete all outgoing links from children, if any
453: */
454: if (me->children) {
455: int cnt = 0;
456: for (; cnt<CHILD_HASH_SIZE; cnt++) {
457: HTList * kids = me->children[cnt];
458: if (kids) {
459: HTChildAnchor * child;
460: while ((child = (HTChildAnchor *) HTList_nextObject(kids)))
461: delete_links((HTAnchor *) child);
462: return NO; /* Parent not deleted */
463: }
464: }
465: }
1.1 timbl 466:
1.54 frystyk 467: /*
468: ** No more incoming links : kill everything
469: ** First, recursively delete children
470: */
471: if (me->children) {
472: int cnt = 0;
473: for (; cnt<CHILD_HASH_SIZE; cnt++) {
474: HTList * kids = me->children[cnt];
475: if (kids) {
476: HTChildAnchor * child;
477: while ((child=(HTChildAnchor *) HTList_removeLastObject(kids)))
478: delete_links((HTAnchor *) child);
479: HT_FREE(child->tag);
480: HT_FREE(child);
481: }
482: }
483: }
484: }
1.1 timbl 485:
1.54 frystyk 486: /* Now kill myself */
487: delete_parent(me);
488: return YES; /* Parent deleted */
489: #if 0
1.3 timbl 490: if (! HTList_isEmpty (me->sources)) { /* There are still incoming links */
1.1 timbl 491: /* Delete all outgoing links from children, if any */
1.3 timbl 492: HTList *kids = me->children;
1.12 frystyk 493: while ((child = (HTChildAnchor *) HTList_nextObject (kids)))
1.54 frystyk 494: delete_links ((HTAnchor *) child);
1.1 timbl 495: return NO; /* Parent not deleted */
496: }
497:
498: /* No more incoming links : kill everything */
499: /* First, recursively delete children */
1.12 frystyk 500: while ((child = (HTChildAnchor *) HTList_removeLastObject (me->children))) {
1.54 frystyk 501: delete_links ((HTAnchor *) child);
1.43 frystyk 502: HT_FREE(child->tag);
503: HT_FREE(child);
1.1 timbl 504: }
1.54 frystyk 505: #endif
1.69 frystyk 506: }
507:
508: /* FLATTEN ALL ANCHORS
509: ** -------------------
510: ** Flattens the anchor web structure into an array.
511: ** This is useful for calculating statistics, sorting
512: ** the parent anchors etc.
513: **
514: ** The caller can indicate the size of the array (total
515: ** number of anchors if known - otherwise 0).
516: **
517: ** Return an array that must be freed by the caller or
518: ** NULL if no anchors.
519: */
520: PUBLIC HTArray * HTAnchor_getArray (int growby)
521: {
522: int cnt;
523: HTArray * array = NULL;
524: HTList * cur = NULL;
525: if (!adult_table) return NULL;
526:
527: /* Allocate an array for the anchors */
528: if (!growby) growby = HASH_SIZE;
529: array = HTArray_new(growby);
530:
531: /* Traverse anchor structure */
532: for (cnt=0; cnt<HASH_SIZE; cnt++) {
533: if ((cur = adult_table[cnt])) {
534: HTParentAnchor * pres = NULL;
535: while ((pres = (HTParentAnchor *) HTList_nextObject(cur)) != NULL) {
536: if (HTArray_addObject(array, pres) == NO) {
537: if (ANCH_TRACE)
538: HTTrace("Anchor...... Can't add object %p to array %p\n",
539: pres, array);
540: break;
541: }
542: }
543: }
544: }
545: return array;
1.1 timbl 546: }
547:
1.17 frystyk 548: /* ------------------------------------------------------------------------- */
549: /* Data Access Methods */
550: /* ------------------------------------------------------------------------- */
1.1 timbl 551:
1.35 frystyk 552: PUBLIC HTParentAnchor * HTAnchor_parent (HTAnchor * me)
1.1 timbl 553: {
1.17 frystyk 554: return me ? me->parent : NULL;
1.1 timbl 555: }
556:
1.41 frystyk 557: PUBLIC void HTAnchor_setDocument (HTParentAnchor * me, void * doc)
1.1 timbl 558: {
1.41 frystyk 559: if (me) me->document = doc;
1.1 timbl 560: }
561:
1.41 frystyk 562: PUBLIC void * HTAnchor_document (HTParentAnchor * me)
1.1 timbl 563: {
1.17 frystyk 564: return me ? me->document : NULL;
1.1 timbl 565: }
566:
1.53 frystyk 567: PUBLIC char * HTAnchor_address (HTAnchor * me)
568: {
569: char *addr = NULL;
570: if (me) {
571: if (((HTParentAnchor *) me == me->parent) ||
572: !((HTChildAnchor *) me)->tag) { /* it's an adult or no tag */
573: StrAllocCopy (addr, me->parent->address);
574: }
575: else { /* it's a named child */
576: if ((addr = (char *) HT_MALLOC(2 + strlen (me->parent->address) + \
577: strlen (((HTChildAnchor *) me)->tag))) == NULL)
578: HT_OUTOFMEM("HTAnchor_address");
579: sprintf (addr, "%s#%s", me->parent->address,
580: ((HTChildAnchor *) me)->tag);
581: }
582: }
583: return addr;
584: }
585:
1.51 frystyk 586: /*
1.53 frystyk 587: ** We resolve the child address with respect to either a base URL,
588: ** a content-location, or to the request-URI
1.51 frystyk 589: */
1.53 frystyk 590: PUBLIC char * HTAnchor_expandedAddress (HTAnchor * me)
1.1 timbl 591: {
1.17 frystyk 592: char *addr = NULL;
593: if (me) {
1.53 frystyk 594: HTParentAnchor * parent = me->parent;
1.63 frystyk 595: char * base = HTAnchor_base(parent);
1.17 frystyk 596: if (((HTParentAnchor *) me == me->parent) ||
597: !((HTChildAnchor *) me)->tag) { /* it's an adult or no tag */
1.52 frystyk 598: StrAllocCopy(addr, base);
1.51 frystyk 599: } else { /* it's a named child */
1.52 frystyk 600: if ((addr = (char *) HT_MALLOC(2 + strlen(base) + strlen(((HTChildAnchor *) me)->tag))) == NULL)
1.43 frystyk 601: HT_OUTOFMEM("HTAnchor_address");
1.52 frystyk 602: sprintf (addr, "%s#%s", base, ((HTChildAnchor *) me)->tag);
1.17 frystyk 603: }
1.1 timbl 604: }
1.17 frystyk 605: return addr;
1.1 timbl 606: }
607:
1.52 frystyk 608: /* Physical Address
609: ** ----------------
610: */
611: PUBLIC char * HTAnchor_physical (HTParentAnchor * me)
612: {
1.53 frystyk 613: return me ? me->physical ? me->physical : me->address : NULL;
1.52 frystyk 614: }
615:
1.53 frystyk 616: PUBLIC void HTAnchor_setPhysical (HTParentAnchor * me, char * physical)
1.52 frystyk 617: {
618: if (!me || !physical) {
619: if (ANCH_TRACE)
620: HTTrace("HTAnchor.... setPhysical, called with null argument\n");
621: return;
622: }
623: StrAllocCopy(me->physical, physical);
624: }
625:
1.53 frystyk 626: PUBLIC void HTAnchor_clearPhysical(HTParentAnchor * me)
627: {
628: if (me) HT_FREE(me->physical);
629: }
630:
631: /*
632: ** Children information
633: */
1.35 frystyk 634: PUBLIC BOOL HTAnchor_hasChildren (HTParentAnchor * me)
1.17 frystyk 635: {
1.54 frystyk 636: return (me && me->children);
1.17 frystyk 637: }
1.1 timbl 638:
1.63 frystyk 639: /* ------------------------------------------------------------------------- */
640: /* Entity Header Information */
641: /* ------------------------------------------------------------------------- */
642:
1.59 frystyk 643: /*
1.63 frystyk 644: ** Take the relevant infomration from the response object and cache it
645: ** in the anchor object. We inherit the information that is already
646: ** parsed in the response along with the unparsed headers.
1.52 frystyk 647: */
1.63 frystyk 648: PUBLIC BOOL HTAnchor_update (HTParentAnchor * me, HTResponse * response)
1.52 frystyk 649: {
1.63 frystyk 650: if (me && response) {
1.59 frystyk 651:
1.63 frystyk 652: if (ANCH_TRACE)
653: HTTrace("HTAnchor.... Updating metainformation for %p\n", me);
1.59 frystyk 654:
1.63 frystyk 655: /*
656: ** The content length and type is already parsed at this point
657: ** in time. We also check for format parameters like charset etc.
658: ** and copy the contents in the anchor object
659: */
660: me->content_length = HTResponse_length(response);
661: me->content_type = HTResponse_format(response);
662: me->type_parameters = HTResponse_formatParam(response);
663:
664: /*
665: ** Inherit all the unparsed headers - we may need them later!
666: */
1.68 frystyk 667: me->headers = HTResponse_handOverHeader(response);
1.59 frystyk 668:
669: /*
1.63 frystyk 670: ** Notifify the response object not to delete the lists that we
671: ** have inherited in the anchor object
1.59 frystyk 672: */
1.63 frystyk 673: HTResponse_isCached(response, YES);
1.59 frystyk 674:
675: return YES;
676: }
677: return NO;
1.52 frystyk 678: }
679:
680: /*
681: ** Variants. If this anchor has any variants then keep them in a list
682: ** so that we can find them later. The list is simply a list of
683: ** parent anchors.
684: */
685: PUBLIC HTList * HTAnchor_variants (HTParentAnchor * me)
1.17 frystyk 686: {
1.52 frystyk 687: return me ? me->variants : NULL;
1.17 frystyk 688: }
1.1 timbl 689:
1.52 frystyk 690: PUBLIC BOOL HTAnchor_addVariant (HTParentAnchor * me,
691: HTParentAnchor * variant)
1.1 timbl 692: {
1.52 frystyk 693: if (me && variant) {
694: if (!me->variants) me->variants = HTList_new();
695: return HTList_addObject(me->variants, variant);
696: }
697: return NO;
1.17 frystyk 698: }
699:
1.52 frystyk 700: PUBLIC BOOL HTAnchor_deleteVariant (HTParentAnchor * me,
701: HTParentAnchor * variant)
1.17 frystyk 702: {
1.52 frystyk 703: return (me && variant) ? HTList_removeObject(me->variants, variant) : NO;
1.9 frystyk 704: }
1.1 timbl 705:
1.52 frystyk 706: /*
707: ** Is this resource an index?
1.17 frystyk 708: */
1.52 frystyk 709: PUBLIC void HTAnchor_clearIndex (HTParentAnchor * me)
710: {
711: if (me) me->isIndex = NO;
712: }
1.17 frystyk 713:
1.52 frystyk 714: PUBLIC void HTAnchor_setIndex (HTParentAnchor * me)
1.1 timbl 715: {
1.52 frystyk 716: if (me) me->isIndex = YES;
1.1 timbl 717: }
718:
1.52 frystyk 719: PUBLIC BOOL HTAnchor_isIndex (HTParentAnchor * me)
1.1 timbl 720: {
1.52 frystyk 721: return me ? me->isIndex : NO;
1.27 frystyk 722: }
723:
1.52 frystyk 724: /* Content Base
1.51 frystyk 725: ** ------------
726: */
727: PUBLIC char * HTAnchor_base (HTParentAnchor * me)
728: {
1.63 frystyk 729: if (me) {
730: if (me->content_base) return me->content_base;
731: if (me->headers) {
732: char * base = HTAssocList_findObject(me->headers, "content-base");
733: /*
734: ** If no base is found then take the content-location if this
735: ** is present and is absolute, else use the Request-URI.
736: */
1.66 frystyk 737: if (base) StrAllocCopy(me->content_base, HTStrip(base));
1.63 frystyk 738: }
1.66 frystyk 739:
740: /*
741: ** Try the content location if any
742: */
743: {
744: char * location = HTAnchor_location(me);
745: StrAllocCopy(me->content_base,
746: (location && HTURL_isAbsolute(location)) ?
747: location : me->address);
748: }
749: return me->content_base;
1.63 frystyk 750: }
751: return NULL;
1.51 frystyk 752: }
753:
754: PUBLIC BOOL HTAnchor_setBase (HTParentAnchor * me, char * base)
755: {
1.63 frystyk 756: if (me && base) {
757: StrAllocCopy(me->content_base, base);
758: return YES;
1.51 frystyk 759: }
1.63 frystyk 760: return NO;
1.51 frystyk 761: }
762:
1.52 frystyk 763: /* Content Location
764: ** ----------------
1.27 frystyk 765: */
1.52 frystyk 766: PUBLIC char * HTAnchor_location (HTParentAnchor * me)
1.27 frystyk 767: {
1.63 frystyk 768: if (me) {
769: if (me->content_location)
770: return *me->content_location ? me->content_location : NULL;
771: if (me->headers) {
772: char * location = HTAssocList_findObject(me->headers, "content-location");
773: StrAllocCopy(me->content_location, location ? HTStrip(location) : "");
774: return me->content_location;
775: }
776: }
777: return NULL;
1.27 frystyk 778: }
779:
1.53 frystyk 780: /*
781: ** Expand the location relative to the base URL if any, otherwise the
782: ** anchor address it self
783: */
1.52 frystyk 784: PUBLIC BOOL HTAnchor_setLocation (HTParentAnchor * me, char * location)
1.27 frystyk 785: {
1.53 frystyk 786: if (me && location) {
1.63 frystyk 787: char * base = HTAnchor_base(me);
788: if (!base) base = me->address;
1.53 frystyk 789: me->content_location = HTParse(location, base, PARSE_ALL);
790: return YES;
1.52 frystyk 791: }
1.53 frystyk 792: return NO;
1.1 timbl 793: }
794:
1.52 frystyk 795: /* Content-Type
796: ** ------------
1.17 frystyk 797: */
1.35 frystyk 798: PUBLIC HTFormat HTAnchor_format (HTParentAnchor * me)
1.17 frystyk 799: {
800: return me ? me->content_type : NULL;
801: }
1.1 timbl 802:
1.35 frystyk 803: PUBLIC void HTAnchor_setFormat (HTParentAnchor * me, HTFormat form)
1.1 timbl 804: {
1.17 frystyk 805: if (me) me->content_type = form;
1.1 timbl 806: }
807:
1.52 frystyk 808: PUBLIC HTAssocList * HTAnchor_formatParam (HTParentAnchor * me)
809: {
810: return me ? me->type_parameters : NULL;
811: }
812:
813: PUBLIC BOOL HTAnchor_addFormatParam (HTParentAnchor * me,
814: const char * name, const char * value)
815: {
816: if (me) {
817: if (!me->type_parameters) me->type_parameters = HTAssocList_new();
818: return HTAssocList_replaceObject(me->type_parameters, name, value);
819: }
820: return NO;
821: }
822:
1.17 frystyk 823: /*
824: ** Charset parameter to Content-Type
1.1 timbl 825: */
1.35 frystyk 826: PUBLIC HTCharset HTAnchor_charset (HTParentAnchor * me)
1.1 timbl 827: {
1.52 frystyk 828: if (me && me->type_parameters) {
829: char * charset = HTAssocList_findObject(me->type_parameters,"charset");
830: return HTAtom_for(charset);
831: }
832: return NULL;
1.1 timbl 833: }
834:
1.52 frystyk 835: PUBLIC BOOL HTAnchor_setCharset (HTParentAnchor * me, HTCharset charset)
1.1 timbl 836: {
1.52 frystyk 837: return HTAnchor_addFormatParam(me, "charset", HTAtom_name(charset));
1.1 timbl 838: }
839:
1.17 frystyk 840: /*
1.20 frystyk 841: ** Level parameter to Content-Type
842: */
1.35 frystyk 843: PUBLIC HTLevel HTAnchor_level (HTParentAnchor * me)
1.20 frystyk 844: {
1.52 frystyk 845: if (me && me->type_parameters) {
846: char * level = HTAssocList_findObject(me->type_parameters, "level");
847: return HTAtom_for(level);
848: }
849: return NULL;
1.20 frystyk 850: }
851:
1.52 frystyk 852: PUBLIC BOOL HTAnchor_setLevel (HTParentAnchor * me, HTLevel level)
1.20 frystyk 853: {
1.52 frystyk 854: return HTAnchor_addFormatParam(me, "level", HTAtom_name(level));
1.20 frystyk 855: }
856:
857: /*
1.17 frystyk 858: ** Content Encoding
859: */
1.47 frystyk 860: PUBLIC HTList * HTAnchor_encoding (HTParentAnchor * me)
1.1 timbl 861: {
1.17 frystyk 862: return me ? me->content_encoding : NULL;
1.1 timbl 863: }
864:
1.63 frystyk 865: PUBLIC BOOL HTAnchor_addEncoding (HTParentAnchor * me, HTEncoding encoding)
1.17 frystyk 866: {
1.47 frystyk 867: if (me && encoding) {
868: if (!me->content_encoding) me->content_encoding = HTList_new();
869: return HTList_addObject(me->content_encoding, encoding);
870: }
871: return NO;
1.17 frystyk 872: }
873:
1.67 frystyk 874: PUBLIC BOOL HTAnchor_removeEncoding (HTParentAnchor * me, HTEncoding encoding)
875: {
876: return (me && me->content_encoding && encoding) ?
877: HTList_removeObject(me->content_encoding, encoding) : NO;
878: }
879:
1.17 frystyk 880: /*
1.21 frystyk 881: ** Content Language
882: */
1.47 frystyk 883: PUBLIC HTList * HTAnchor_language (HTParentAnchor * me)
1.21 frystyk 884: {
1.63 frystyk 885: if (me) {
886: if (me->content_language == NULL && me->headers) {
887: char * value = HTAssocList_findObject(me->headers, "content-language");
888: char * field;
889: if (!me->content_language) me->content_language = HTList_new();
890: while ((field = HTNextField(&value)) != NULL) {
891: char * lc = field;
892: while ((*lc = TOLOWER(*lc))) lc++;
893: HTList_addObject(me->content_language, HTAtom_for(field));
894: }
895: }
896: return me->content_language;
897: }
898: return NULL;
1.21 frystyk 899: }
900:
1.63 frystyk 901: PUBLIC BOOL HTAnchor_addLanguage (HTParentAnchor * me, HTLanguage language)
1.21 frystyk 902: {
1.47 frystyk 903: if (me && language) {
904: if (!me->content_language) me->content_language = HTList_new();
905: return HTList_addObject(me->content_language, language);
906: }
907: return NO;
1.21 frystyk 908: }
909:
910: /*
1.17 frystyk 911: ** Content Length
912: */
1.35 frystyk 913: PUBLIC long int HTAnchor_length (HTParentAnchor * me)
1.1 timbl 914: {
1.17 frystyk 915: return me ? me->content_length : -1;
1.1 timbl 916: }
917:
1.35 frystyk 918: PUBLIC void HTAnchor_setLength (HTParentAnchor * me, long int length)
1.17 frystyk 919: {
920: if (me) me->content_length = length;
921: }
1.1 timbl 922:
1.49 frystyk 923: PUBLIC void HTAnchor_addLength (HTParentAnchor * me, long int deltalength)
924: {
925: if (me) {
926: if (me->content_length < 0)
927: me->content_length = deltalength;
928: else
929: me->content_length += deltalength;
930: }
931: }
932:
1.17 frystyk 933: /*
1.63 frystyk 934: ** Content Transfer Encoding
935: */
936: PUBLIC HTEncoding HTAnchor_transfer (HTParentAnchor * me)
937: {
938: return me ? me->transfer : NULL;
939: }
940:
941: PUBLIC void HTAnchor_setTransfer (HTParentAnchor * me, HTEncoding transfer)
942: {
943: if (me) me->transfer = transfer;
944: }
945:
946: /*
1.17 frystyk 947: ** Allowed methods (Allow)
1.1 timbl 948: */
1.63 frystyk 949: PUBLIC HTMethod HTAnchor_allow (HTParentAnchor * me)
1.17 frystyk 950: {
1.63 frystyk 951: if (me) {
952: if (me->allow == 0 && me->headers) {
953: char * value = HTAssocList_findObject(me->headers, "allow");
954: char * field;
955:
956: /*
957: ** We treat methods allowed on this object as case insensitive
958: ** in case we receive the information over the net - that is -
959: ** in the Allow header.
960: */
961: while ((field = HTNextField(&value)) != NULL) {
962: HTMethod new_method;
963: if ((new_method = HTMethod_enum(field)) != METHOD_INVALID)
964: me->allow |= new_method;
965: }
966: }
967: return me->allow;
968: }
969: return METHOD_INVALID;
1.17 frystyk 970: }
1.1 timbl 971:
1.63 frystyk 972: PUBLIC void HTAnchor_setAllow (HTParentAnchor * me, HTMethod methodset)
1.1 timbl 973: {
1.63 frystyk 974: if (me) me->allow = methodset;
1.1 timbl 975: }
976:
1.63 frystyk 977: PUBLIC void HTAnchor_appendAllow (HTParentAnchor * me, HTMethod methodset)
1.1 timbl 978: {
1.63 frystyk 979: if (me) me->allow |= methodset;
1.1 timbl 980: }
981:
1.17 frystyk 982: /*
983: ** Title
1.2 timbl 984: */
1.46 frystyk 985: PUBLIC const char * HTAnchor_title (HTParentAnchor * me)
1.1 timbl 986: {
1.63 frystyk 987: if (me) {
988: if (me->title)
989: return *me->title ? me->title : NULL;
990: if (me->headers) {
991: char * value = HTAssocList_findObject(me->headers, "title");
992: char * title;
993: if ((title = HTNextField(&value))) StrAllocCopy(me->title, title);
994: return me->title;
995: }
996: }
997: return NULL;
1.17 frystyk 998: }
1.1 timbl 999:
1.46 frystyk 1000: PUBLIC void HTAnchor_setTitle (HTParentAnchor * me, const char * title)
1.17 frystyk 1001: {
1002: if (me && title) StrAllocCopy(me->title, title);
1.2 timbl 1003: }
1004:
1.46 frystyk 1005: PUBLIC void HTAnchor_appendTitle (HTParentAnchor * me, const char * title)
1.17 frystyk 1006: {
1007: if (me && title) StrAllocCat(me->title, title);
1008: }
1.2 timbl 1009:
1.17 frystyk 1010: /*
1011: ** Version
1.2 timbl 1012: */
1.41 frystyk 1013: PUBLIC char * HTAnchor_version (HTParentAnchor * me)
1.17 frystyk 1014: {
1.63 frystyk 1015: if (me) {
1016: if (me->version)
1017: return *me->version ? me->version : NULL;
1018: if (me->headers) {
1019: char * value = HTAssocList_findObject(me->headers, "version");
1020: char * version;
1021: if ((version = HTNextField(&value)))
1022: StrAllocCopy(me->version, version);
1023: return me->version;
1024: }
1025: }
1026: return NULL;
1.17 frystyk 1027: }
1.2 timbl 1028:
1.46 frystyk 1029: PUBLIC void HTAnchor_setVersion (HTParentAnchor * me, const char * version)
1.2 timbl 1030: {
1.17 frystyk 1031: if (me && version) StrAllocCopy(me->version, version);
1.2 timbl 1032: }
1033:
1.17 frystyk 1034: /*
1035: ** Derived from
1.2 timbl 1036: */
1.41 frystyk 1037: PUBLIC char * HTAnchor_derived (HTParentAnchor * me)
1.17 frystyk 1038: {
1.63 frystyk 1039: if (me) {
1040: if (me->derived_from)
1041: return *me->derived_from ? me->derived_from : NULL;
1042: if (me->headers) {
1043: char * value = HTAssocList_findObject(me->headers, "derived-from");
1044: char * derived_from;
1045: if ((derived_from = HTNextField(&value)))
1046: StrAllocCopy(me->derived_from, derived_from);
1047: return me->derived_from;
1048: }
1049: }
1050: return NULL;
1.17 frystyk 1051: }
1052:
1.46 frystyk 1053: PUBLIC void HTAnchor_setDerived (HTParentAnchor * me, const char *derived_from)
1.17 frystyk 1054: {
1055: if (me && derived_from) StrAllocCopy(me->derived_from, derived_from);
1056: }
1.2 timbl 1057:
1.17 frystyk 1058: /*
1.52 frystyk 1059: ** Content MD5
1060: */
1061: PUBLIC char * HTAnchor_md5 (HTParentAnchor * me)
1062: {
1.63 frystyk 1063: if (me) {
1064: if (me->content_md5)
1065: return *me->content_md5 ? me->content_md5 : NULL;
1066: if (me->headers) {
1067: char * value = HTAssocList_findObject(me->headers, "content-md5");
1068: char * md5;
1069: if ((md5 = HTNextField(&value))) StrAllocCopy(me->content_md5,md5);
1070: return me->content_md5;
1071: }
1072: }
1073: return NULL;
1.52 frystyk 1074: }
1075:
1.63 frystyk 1076: PUBLIC BOOL HTAnchor_setMd5 (HTParentAnchor * me, const char * hash)
1.52 frystyk 1077: {
1.63 frystyk 1078: if (me && hash) {
1079: StrAllocCopy(me->content_md5, hash);
1080: return YES;
1081: }
1082: return NO;
1.52 frystyk 1083: }
1084:
1085: /*
1.28 frystyk 1086: ** Date
1087: */
1.41 frystyk 1088: PUBLIC time_t HTAnchor_date (HTParentAnchor * me)
1089: {
1.63 frystyk 1090: if (me) {
1091: if (me->date == (time_t) -1 && me->headers) {
1092: char * value = HTAssocList_findObject(me->headers, "date");
1093: if (value) me->date = HTParseTime(value, NULL, YES);
1094: }
1095: return me->date;
1096: }
1097: return (time_t) -1;
1.41 frystyk 1098: }
1099:
1.46 frystyk 1100: PUBLIC void HTAnchor_setDate (HTParentAnchor * me, const time_t date)
1.28 frystyk 1101: {
1.41 frystyk 1102: if (me) me->date = date;
1.28 frystyk 1103: }
1104:
1105: /*
1106: ** Expires
1107: */
1.41 frystyk 1108: PUBLIC time_t HTAnchor_expires (HTParentAnchor * me)
1109: {
1.63 frystyk 1110: if (me) {
1111: if (me->expires == (time_t) -1 && me->headers) {
1112: char * value = HTAssocList_findObject(me->headers, "expires");
1113: if (value) me->expires = HTParseTime(value, NULL, YES);
1114: }
1115: return me->expires;
1116: }
1117: return (time_t) -1;
1.41 frystyk 1118: }
1119:
1.46 frystyk 1120: PUBLIC void HTAnchor_setExpires (HTParentAnchor * me, const time_t expires)
1.28 frystyk 1121: {
1.41 frystyk 1122: if (me) me->expires = expires;
1.28 frystyk 1123: }
1124:
1125: /*
1126: ** Last Modified
1127: */
1.41 frystyk 1128: PUBLIC time_t HTAnchor_lastModified (HTParentAnchor * me)
1129: {
1.63 frystyk 1130: if (me) {
1131: if (me->last_modified == (time_t) -1 && me->headers) {
1132: char * value = HTAssocList_findObject(me->headers,"last-modified");
1133: if (value) me->last_modified = HTParseTime(value, NULL, YES);
1134: }
1135: return me->last_modified;
1136: }
1137: return (time_t) -1;
1.41 frystyk 1138: }
1139:
1.46 frystyk 1140: PUBLIC void HTAnchor_setLastModified (HTParentAnchor * me, const time_t lm)
1.28 frystyk 1141: {
1.41 frystyk 1142: if (me) me->last_modified = lm;
1.28 frystyk 1143: }
1144:
1145: /*
1.59 frystyk 1146: ** Age
1147: */
1148: PUBLIC time_t HTAnchor_age (HTParentAnchor * me)
1149: {
1.63 frystyk 1150: if (me) {
1151: if (me->age == (time_t) -1 && me->headers) {
1152: char * value = HTAssocList_findObject(me->headers, "age");
1153: if (value) me->age = atol(value);
1154: }
1155: return me->age;
1156: }
1157: return (time_t) -1;
1.59 frystyk 1158: }
1159:
1160: PUBLIC void HTAnchor_setAge (HTParentAnchor * me, const time_t age)
1161: {
1162: if (me) me->age = age;
1163: }
1164:
1165: /*
1.52 frystyk 1166: ** Entity Tag
1167: */
1168: PUBLIC char * HTAnchor_etag (HTParentAnchor * me)
1169: {
1.63 frystyk 1170: if (me) {
1171: if (me->etag)
1172: return *me->etag ? me->etag : NULL;
1173: if (me->headers) {
1174: char * value = HTAssocList_findObject(me->headers, "etag");
1175: char * etag;
1176: if ((etag = HTNextField(&value))) StrAllocCopy(me->etag, etag);
1177: return me->etag;
1178: }
1179: }
1180:
1.52 frystyk 1181: return me ? me->etag : NULL;
1182: }
1183:
1184: PUBLIC void HTAnchor_setEtag (HTParentAnchor * me, const char * etag)
1185: {
1186: if (me && etag) StrAllocCopy(me->etag, etag);
1187: }
1188:
1189: PUBLIC BOOL HTAnchor_isEtagWeak (HTParentAnchor * me)
1190: {
1191: return (me && me->etag && !strncasecomp(me->etag, "W/", 2));
1192: }
1193:
1194: /*
1.63 frystyk 1195: ** Original headers (if any)
1.17 frystyk 1196: */
1.63 frystyk 1197: PUBLIC HTAssocList * HTAnchor_header (HTParentAnchor * me)
1.2 timbl 1198: {
1.63 frystyk 1199: return me ? me->headers : NULL;
1.2 timbl 1200: }
1201:
1.63 frystyk 1202: PUBLIC BOOL HTAnchor_setHeader (HTParentAnchor * me, HTAssocList * headers)
1.2 timbl 1203: {
1.17 frystyk 1204: if (me) {
1.63 frystyk 1205: me->headers = headers;
1206: return YES;
1.17 frystyk 1207: }
1.63 frystyk 1208: return NO;
1.2 timbl 1209: }
1210:
1.23 frystyk 1211: /*
1.59 frystyk 1212: ** Validate anchor values and finish up parsing
1.2 timbl 1213: */
1.59 frystyk 1214: PUBLIC void HTAnchor_setHeaderParsed (HTParentAnchor * me)
1.2 timbl 1215: {
1.59 frystyk 1216: if (me) {
1217:
1218: /*
1219: ** If the server did not send a date then use the current time
1220: */
1221: if (me->date < 0) me->date = time(NULL);
1222:
1223: /*
1224: ** If we don't get a Last-Modified header then set it to date
1225: */
1.62 frystyk 1226: if (ANCH_TRACE) HTTrace("HTAnchor.... Anchor is parsed\n");
1.59 frystyk 1227: me->header_parsed = YES;
1228: }
1.23 frystyk 1229: }
1230:
1.59 frystyk 1231: PUBLIC BOOL HTAnchor_headerParsed (HTParentAnchor * me)
1.23 frystyk 1232: {
1.59 frystyk 1233: return (me ? me->header_parsed : NO);
1.2 timbl 1234: }
1235:
1.17 frystyk 1236: /* Clear Header Information
1237: ** ------------------------
1238: */
1.35 frystyk 1239: PUBLIC void HTAnchor_clearHeader (HTParentAnchor * me)
1.2 timbl 1240: {
1.63 frystyk 1241: if (ANCH_TRACE) HTTrace("HTAnchor.... Clear all header information\n");
1242: me->allow = METHOD_INVALID;
1.48 frystyk 1243: if (me->content_encoding) {
1244: HTList_delete(me->content_encoding);
1.65 frystyk 1245: me->content_encoding = NULL;
1.48 frystyk 1246: }
1.17 frystyk 1247: if (me->content_language) {
1248: HTList_delete(me->content_language);
1.65 frystyk 1249: me->content_language = NULL;
1.9 frystyk 1250: }
1.51 frystyk 1251: HT_FREE(me->content_base);
1252: HT_FREE(me->content_location);
1.17 frystyk 1253: me->content_length = -1; /* Invalid */
1.57 frystyk 1254:
1.59 frystyk 1255: /* Delete the title */
1256: HT_FREE(me->title);
1257:
1.57 frystyk 1258: /* Clear the content type */
1.17 frystyk 1259: me->content_type = WWW_UNKNOWN;
1.52 frystyk 1260: if (me->type_parameters) {
1261: HTAssocList_delete(me->type_parameters);
1262: me->type_parameters = NULL;
1263: }
1.57 frystyk 1264:
1265: /* Dates etc. */
1.28 frystyk 1266: me->date = (time_t) -1;
1267: me->expires = (time_t) -1;
1268: me->last_modified = (time_t) -1;
1.59 frystyk 1269: me->age = (time_t) -1;
1.17 frystyk 1270:
1.43 frystyk 1271: HT_FREE(me->derived_from);
1272: HT_FREE(me->version);
1.58 frystyk 1273: HT_FREE(me->etag);
1.63 frystyk 1274:
1275: /* Delete any original headers */
1276: if (me->headers) HTAssocList_delete(me->headers);
1277: me->headers = NULL;
1.18 frystyk 1278:
1.62 frystyk 1279: /* Anchor is cleared */
1280: me->header_parsed = NO;
1.1 timbl 1281: }
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