Annotation of libwww/Library/src/HTAnchor.c, revision 1.82
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.
1.82 ! frystyk 6: ** @(#) $Id: HTAnchor.c,v 1.81 1998/11/25 22:21:29 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 */
1.76 frystyk 20: #include "wwwsys.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: {
1.75 frystyk 142: char *tag = HTParse (address, "", PARSE_VIEW); /* 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:
1.82 ! frystyk 414: /*
! 415: ** Deletes all the metadata associated with anchors but doesn't
! 416: ** delete the anchor link structure itself. This is much safer
! 417: ** than deleting the complete anchor structure as this represents the
! 418: ** complete Web the application has been in touch with
! 419: */
! 420: PUBLIC BOOL HTAnchor_clearAll (HTList * documents)
! 421: {
! 422: int cnt;
! 423: HTList * cur;
! 424: if (!adult_table) return NO;
! 425: for (cnt=0; cnt<HASH_SIZE; cnt++) {
! 426: if ((cur = adult_table[cnt])) {
! 427: HTParentAnchor * pres;
! 428: while ((pres = (HTParentAnchor *) HTList_nextObject(cur))) {
! 429:
! 430: /* Then remove entity header information */
! 431: HTAnchor_clearHeader(pres);
! 432:
! 433: /* Delete the physical address */
! 434: HT_FREE(pres->physical);
! 435:
! 436: /* Register if we have a document on this anchor */
! 437: if (documents && pres->document)
! 438: HTList_addObject(documents, pres->document);
! 439: }
! 440: }
! 441: }
! 442: return YES;
! 443: }
1.19 frystyk 444:
1.54 frystyk 445: PRIVATE void delete_links (HTAnchor * me)
1.1 timbl 446: {
1.3 timbl 447: if (! me)
1.1 timbl 448: return;
449:
450: /* Recursively try to delete target anchors */
1.3 timbl 451: if (me->mainLink.dest) {
452: HTParentAnchor *parent = me->mainLink.dest->parent;
453: HTList_removeObject (parent->sources, me);
1.1 timbl 454: if (! parent->document) /* Test here to avoid calling overhead */
455: HTAnchor_delete (parent);
456: }
1.3 timbl 457: if (me->links) { /* Extra destinations */
1.1 timbl 458: HTLink *target;
1.12 frystyk 459: while ((target = (HTLink *) HTList_removeLastObject (me->links))) {
1.1 timbl 460: HTParentAnchor *parent = target->dest->parent;
1.3 timbl 461: HTList_removeObject (parent->sources, me);
1.1 timbl 462: if (! parent->document) /* Test here to avoid calling overhead */
463: HTAnchor_delete (parent);
464: }
465: }
466: }
467:
1.35 frystyk 468: PUBLIC BOOL HTAnchor_delete (HTParentAnchor * me)
1.1 timbl 469: {
1.54 frystyk 470: /* Don't delete if document is loaded */
471: if (!me || me->document) {
472: if (ANCH_TRACE) HTTrace("Anchor...... Not deleted\n");
473: return NO;
474: }
475:
476: /* Recursively try to delete target anchors */
477: delete_links ((HTAnchor *) me);
1.1 timbl 478:
1.54 frystyk 479: if (!HTList_isEmpty(me->sources)) { /* There are still incoming links */
480:
481: /*
482: ** Delete all outgoing links from children, if any
483: */
484: if (me->children) {
485: int cnt = 0;
486: for (; cnt<CHILD_HASH_SIZE; cnt++) {
487: HTList * kids = me->children[cnt];
488: if (kids) {
489: HTChildAnchor * child;
490: while ((child = (HTChildAnchor *) HTList_nextObject(kids)))
491: delete_links((HTAnchor *) child);
492: return NO; /* Parent not deleted */
493: }
494: }
495: }
1.1 timbl 496:
1.54 frystyk 497: /*
498: ** No more incoming links : kill everything
499: ** First, recursively delete children
500: */
501: if (me->children) {
502: int cnt = 0;
503: for (; cnt<CHILD_HASH_SIZE; cnt++) {
504: HTList * kids = me->children[cnt];
505: if (kids) {
506: HTChildAnchor * child;
507: while ((child=(HTChildAnchor *) HTList_removeLastObject(kids)))
508: delete_links((HTAnchor *) child);
509: HT_FREE(child->tag);
510: HT_FREE(child);
511: }
512: }
513: }
514: }
1.1 timbl 515:
1.54 frystyk 516: /* Now kill myself */
517: delete_parent(me);
518: return YES; /* Parent deleted */
519: #if 0
1.3 timbl 520: if (! HTList_isEmpty (me->sources)) { /* There are still incoming links */
1.1 timbl 521: /* Delete all outgoing links from children, if any */
1.3 timbl 522: HTList *kids = me->children;
1.12 frystyk 523: while ((child = (HTChildAnchor *) HTList_nextObject (kids)))
1.54 frystyk 524: delete_links ((HTAnchor *) child);
1.1 timbl 525: return NO; /* Parent not deleted */
526: }
527:
528: /* No more incoming links : kill everything */
529: /* First, recursively delete children */
1.12 frystyk 530: while ((child = (HTChildAnchor *) HTList_removeLastObject (me->children))) {
1.54 frystyk 531: delete_links ((HTAnchor *) child);
1.43 frystyk 532: HT_FREE(child->tag);
533: HT_FREE(child);
1.1 timbl 534: }
1.54 frystyk 535: #endif
1.69 frystyk 536: }
537:
538: /* FLATTEN ALL ANCHORS
539: ** -------------------
540: ** Flattens the anchor web structure into an array.
541: ** This is useful for calculating statistics, sorting
542: ** the parent anchors etc.
543: **
544: ** The caller can indicate the size of the array (total
545: ** number of anchors if known - otherwise 0).
546: **
547: ** Return an array that must be freed by the caller or
548: ** NULL if no anchors.
549: */
550: PUBLIC HTArray * HTAnchor_getArray (int growby)
551: {
552: int cnt;
553: HTArray * array = NULL;
554: HTList * cur = NULL;
555: if (!adult_table) return NULL;
556:
557: /* Allocate an array for the anchors */
558: if (!growby) growby = HASH_SIZE;
559: array = HTArray_new(growby);
560:
561: /* Traverse anchor structure */
562: for (cnt=0; cnt<HASH_SIZE; cnt++) {
563: if ((cur = adult_table[cnt])) {
564: HTParentAnchor * pres = NULL;
565: while ((pres = (HTParentAnchor *) HTList_nextObject(cur)) != NULL) {
566: if (HTArray_addObject(array, pres) == NO) {
567: if (ANCH_TRACE)
568: HTTrace("Anchor...... Can't add object %p to array %p\n",
569: pres, array);
570: break;
571: }
572: }
573: }
574: }
575: return array;
1.1 timbl 576: }
577:
1.17 frystyk 578: /* ------------------------------------------------------------------------- */
579: /* Data Access Methods */
580: /* ------------------------------------------------------------------------- */
1.1 timbl 581:
1.35 frystyk 582: PUBLIC HTParentAnchor * HTAnchor_parent (HTAnchor * me)
1.1 timbl 583: {
1.17 frystyk 584: return me ? me->parent : NULL;
1.1 timbl 585: }
586:
1.41 frystyk 587: PUBLIC void HTAnchor_setDocument (HTParentAnchor * me, void * doc)
1.1 timbl 588: {
1.41 frystyk 589: if (me) me->document = doc;
1.1 timbl 590: }
591:
1.41 frystyk 592: PUBLIC void * HTAnchor_document (HTParentAnchor * me)
1.1 timbl 593: {
1.17 frystyk 594: return me ? me->document : NULL;
1.1 timbl 595: }
596:
1.53 frystyk 597: PUBLIC char * HTAnchor_address (HTAnchor * me)
598: {
599: char *addr = NULL;
600: if (me) {
601: if (((HTParentAnchor *) me == me->parent) ||
602: !((HTChildAnchor *) me)->tag) { /* it's an adult or no tag */
603: StrAllocCopy (addr, me->parent->address);
604: }
605: else { /* it's a named child */
606: if ((addr = (char *) HT_MALLOC(2 + strlen (me->parent->address) + \
607: strlen (((HTChildAnchor *) me)->tag))) == NULL)
608: HT_OUTOFMEM("HTAnchor_address");
609: sprintf (addr, "%s#%s", me->parent->address,
610: ((HTChildAnchor *) me)->tag);
611: }
612: }
613: return addr;
614: }
615:
1.51 frystyk 616: /*
1.53 frystyk 617: ** We resolve the child address with respect to either a base URL,
618: ** a content-location, or to the request-URI
1.51 frystyk 619: */
1.53 frystyk 620: PUBLIC char * HTAnchor_expandedAddress (HTAnchor * me)
1.1 timbl 621: {
1.17 frystyk 622: char *addr = NULL;
623: if (me) {
1.53 frystyk 624: HTParentAnchor * parent = me->parent;
1.63 frystyk 625: char * base = HTAnchor_base(parent);
1.17 frystyk 626: if (((HTParentAnchor *) me == me->parent) ||
627: !((HTChildAnchor *) me)->tag) { /* it's an adult or no tag */
1.52 frystyk 628: StrAllocCopy(addr, base);
1.51 frystyk 629: } else { /* it's a named child */
1.52 frystyk 630: if ((addr = (char *) HT_MALLOC(2 + strlen(base) + strlen(((HTChildAnchor *) me)->tag))) == NULL)
1.43 frystyk 631: HT_OUTOFMEM("HTAnchor_address");
1.52 frystyk 632: sprintf (addr, "%s#%s", base, ((HTChildAnchor *) me)->tag);
1.17 frystyk 633: }
1.1 timbl 634: }
1.17 frystyk 635: return addr;
1.1 timbl 636: }
637:
1.52 frystyk 638: /* Physical Address
639: ** ----------------
640: */
641: PUBLIC char * HTAnchor_physical (HTParentAnchor * me)
642: {
1.53 frystyk 643: return me ? me->physical ? me->physical : me->address : NULL;
1.52 frystyk 644: }
645:
1.53 frystyk 646: PUBLIC void HTAnchor_setPhysical (HTParentAnchor * me, char * physical)
1.52 frystyk 647: {
648: if (!me || !physical) {
649: if (ANCH_TRACE)
650: HTTrace("HTAnchor.... setPhysical, called with null argument\n");
651: return;
652: }
653: StrAllocCopy(me->physical, physical);
654: }
655:
1.53 frystyk 656: PUBLIC void HTAnchor_clearPhysical(HTParentAnchor * me)
657: {
658: if (me) HT_FREE(me->physical);
659: }
660:
661: /*
662: ** Children information
663: */
1.35 frystyk 664: PUBLIC BOOL HTAnchor_hasChildren (HTParentAnchor * me)
1.17 frystyk 665: {
1.54 frystyk 666: return (me && me->children);
1.74 frystyk 667: }
668:
669: /*
670: ** Fix up a simple routine to see if this anchor is a (ChildAnchor *)
671: ** Seem to be doing it all over the place, so simplify!
672: */
673: PUBLIC BOOL HTAnchor_isChild (HTAnchor * me)
674: {
675: return (me && (HTParentAnchor *) me != me->parent);
676: }
677:
678: PUBLIC char * HTAnchor_view (HTAnchor * me)
679: {
680: char * view = NULL;
681: if (me && (HTParentAnchor *) me != me->parent && ((HTChildAnchor *) me)->tag)
682: StrAllocCopy(view, ((HTChildAnchor *) me)->tag);
683: return view;
1.17 frystyk 684: }
1.1 timbl 685:
1.63 frystyk 686: /* ------------------------------------------------------------------------- */
687: /* Entity Header Information */
688: /* ------------------------------------------------------------------------- */
689:
1.59 frystyk 690: /*
1.63 frystyk 691: ** Take the relevant infomration from the response object and cache it
692: ** in the anchor object. We inherit the information that is already
693: ** parsed in the response along with the unparsed headers.
1.52 frystyk 694: */
1.63 frystyk 695: PUBLIC BOOL HTAnchor_update (HTParentAnchor * me, HTResponse * response)
1.52 frystyk 696: {
1.63 frystyk 697: if (me && response) {
1.59 frystyk 698:
1.79 frystyk 699: if (HTResponse_isCachable(response) == HT_CACHE_ETAG) {
700: char * etag = HTResponse_etag(response);
701: if (ANCH_TRACE) HTTrace("HTAnchor.... Updating etag for %p\n", me);
702: if (etag) {
703: HTAnchor_setEtag(me, etag);
704: return YES;
705: }
706: } else if (HTResponse_isCachable(response) == HT_CACHE_ALL) {
1.81 frystyk 707: char * etag = HTResponse_etag(response);
1.79 frystyk 708: if (ANCH_TRACE)
709: HTTrace("HTAnchor.... Updating metainformation for %p\n", me);
710:
711: /*
712: ** The content length and type is already parsed at this point
713: ** in time. We also check for format parameters like charset etc.
714: ** and copy the contents in the anchor object
715: */
716: me->content_length = HTResponse_length(response);
717: me->content_type = HTResponse_format(response);
718: me->type_parameters = HTResponse_formatParam(response);
1.80 frystyk 719: me->content_encoding = HTResponse_encoding(response);
1.63 frystyk 720:
1.81 frystyk 721: /* Don't forget the etag as well */
722: if (etag) HTAnchor_setEtag(me, etag);
723:
1.79 frystyk 724: /*
725: ** Inherit all the unparsed headers - we may need them later!
726: */
727: me->headers = HTResponse_handOverHeader(response);
728:
729: /*
730: ** Notifify the response object not to delete the lists that we
731: ** have inherited in the anchor object
732: */
733: HTResponse_isCached(response, YES);
1.59 frystyk 734:
1.79 frystyk 735: return YES;
736: }
1.59 frystyk 737: }
738: return NO;
1.52 frystyk 739: }
740:
741: /*
742: ** Variants. If this anchor has any variants then keep them in a list
743: ** so that we can find them later. The list is simply a list of
744: ** parent anchors.
745: */
746: PUBLIC HTList * HTAnchor_variants (HTParentAnchor * me)
1.17 frystyk 747: {
1.52 frystyk 748: return me ? me->variants : NULL;
1.17 frystyk 749: }
1.1 timbl 750:
1.52 frystyk 751: PUBLIC BOOL HTAnchor_addVariant (HTParentAnchor * me,
752: HTParentAnchor * variant)
1.1 timbl 753: {
1.52 frystyk 754: if (me && variant) {
755: if (!me->variants) me->variants = HTList_new();
756: return HTList_addObject(me->variants, variant);
757: }
758: return NO;
1.17 frystyk 759: }
760:
1.52 frystyk 761: PUBLIC BOOL HTAnchor_deleteVariant (HTParentAnchor * me,
762: HTParentAnchor * variant)
1.17 frystyk 763: {
1.52 frystyk 764: return (me && variant) ? HTList_removeObject(me->variants, variant) : NO;
1.9 frystyk 765: }
1.1 timbl 766:
1.52 frystyk 767: /*
768: ** Is this resource an index?
1.17 frystyk 769: */
1.52 frystyk 770: PUBLIC void HTAnchor_clearIndex (HTParentAnchor * me)
771: {
772: if (me) me->isIndex = NO;
773: }
1.17 frystyk 774:
1.52 frystyk 775: PUBLIC void HTAnchor_setIndex (HTParentAnchor * me)
1.1 timbl 776: {
1.52 frystyk 777: if (me) me->isIndex = YES;
1.1 timbl 778: }
779:
1.52 frystyk 780: PUBLIC BOOL HTAnchor_isIndex (HTParentAnchor * me)
1.1 timbl 781: {
1.52 frystyk 782: return me ? me->isIndex : NO;
1.27 frystyk 783: }
784:
1.52 frystyk 785: /* Content Base
1.51 frystyk 786: ** ------------
787: */
788: PUBLIC char * HTAnchor_base (HTParentAnchor * me)
789: {
1.63 frystyk 790: if (me) {
791: if (me->content_base) return me->content_base;
792: if (me->headers) {
793: char * base = HTAssocList_findObject(me->headers, "content-base");
794: /*
795: ** If no base is found then take the content-location if this
796: ** is present and is absolute, else use the Request-URI.
797: */
1.66 frystyk 798: if (base) StrAllocCopy(me->content_base, HTStrip(base));
1.63 frystyk 799: }
1.66 frystyk 800:
801: /*
802: ** Try the content location if any
803: */
804: {
805: char * location = HTAnchor_location(me);
806: StrAllocCopy(me->content_base,
807: (location && HTURL_isAbsolute(location)) ?
808: location : me->address);
809: }
810: return me->content_base;
1.63 frystyk 811: }
812: return NULL;
1.51 frystyk 813: }
814:
815: PUBLIC BOOL HTAnchor_setBase (HTParentAnchor * me, char * base)
816: {
1.63 frystyk 817: if (me && base) {
818: StrAllocCopy(me->content_base, base);
819: return YES;
1.51 frystyk 820: }
1.63 frystyk 821: return NO;
1.51 frystyk 822: }
823:
1.52 frystyk 824: /* Content Location
825: ** ----------------
1.27 frystyk 826: */
1.52 frystyk 827: PUBLIC char * HTAnchor_location (HTParentAnchor * me)
1.27 frystyk 828: {
1.63 frystyk 829: if (me) {
830: if (me->content_location)
831: return *me->content_location ? me->content_location : NULL;
832: if (me->headers) {
833: char * location = HTAssocList_findObject(me->headers, "content-location");
834: StrAllocCopy(me->content_location, location ? HTStrip(location) : "");
835: return me->content_location;
836: }
837: }
838: return NULL;
1.27 frystyk 839: }
840:
1.53 frystyk 841: /*
842: ** Expand the location relative to the base URL if any, otherwise the
843: ** anchor address it self
844: */
1.52 frystyk 845: PUBLIC BOOL HTAnchor_setLocation (HTParentAnchor * me, char * location)
1.27 frystyk 846: {
1.53 frystyk 847: if (me && location) {
1.63 frystyk 848: char * base = HTAnchor_base(me);
849: if (!base) base = me->address;
1.53 frystyk 850: me->content_location = HTParse(location, base, PARSE_ALL);
851: return YES;
1.52 frystyk 852: }
1.53 frystyk 853: return NO;
1.1 timbl 854: }
855:
1.72 frystyk 856: /* Meta tags
857: ** ---------
858: */
859: PUBLIC HTAssocList * HTAnchor_meta (HTParentAnchor * me)
860: {
861: return me ? me->meta_tags : NULL;
862: }
863:
864: PUBLIC BOOL HTAnchor_addMeta (HTParentAnchor * me,
865: const char * name, const char * value)
866: {
867: if (me) {
868: if (!me->meta_tags) me->meta_tags = HTAssocList_new();
869: return HTAssocList_replaceObject(me->meta_tags, name, value);
870: }
871: return NO;
872: }
873:
874: /*
875: ** robots meta tag
876: */
877: PUBLIC char * HTAnchor_robots (HTParentAnchor * me)
878: {
879: if (me && me->meta_tags) {
880: char * robots = HTAssocList_findObject(me->meta_tags, "robots");
881: return robots;
882: }
883: return NULL;
884: }
885:
1.52 frystyk 886: /* Content-Type
887: ** ------------
1.17 frystyk 888: */
1.35 frystyk 889: PUBLIC HTFormat HTAnchor_format (HTParentAnchor * me)
1.17 frystyk 890: {
891: return me ? me->content_type : NULL;
892: }
1.1 timbl 893:
1.35 frystyk 894: PUBLIC void HTAnchor_setFormat (HTParentAnchor * me, HTFormat form)
1.1 timbl 895: {
1.17 frystyk 896: if (me) me->content_type = form;
1.1 timbl 897: }
898:
1.52 frystyk 899: PUBLIC HTAssocList * HTAnchor_formatParam (HTParentAnchor * me)
900: {
901: return me ? me->type_parameters : NULL;
902: }
903:
904: PUBLIC BOOL HTAnchor_addFormatParam (HTParentAnchor * me,
905: const char * name, const char * value)
906: {
907: if (me) {
908: if (!me->type_parameters) me->type_parameters = HTAssocList_new();
909: return HTAssocList_replaceObject(me->type_parameters, name, value);
910: }
911: return NO;
912: }
913:
1.17 frystyk 914: /*
915: ** Charset parameter to Content-Type
1.1 timbl 916: */
1.35 frystyk 917: PUBLIC HTCharset HTAnchor_charset (HTParentAnchor * me)
1.1 timbl 918: {
1.52 frystyk 919: if (me && me->type_parameters) {
920: char * charset = HTAssocList_findObject(me->type_parameters,"charset");
921: return HTAtom_for(charset);
922: }
923: return NULL;
1.1 timbl 924: }
925:
1.52 frystyk 926: PUBLIC BOOL HTAnchor_setCharset (HTParentAnchor * me, HTCharset charset)
1.1 timbl 927: {
1.52 frystyk 928: return HTAnchor_addFormatParam(me, "charset", HTAtom_name(charset));
1.1 timbl 929: }
930:
1.17 frystyk 931: /*
1.20 frystyk 932: ** Level parameter to Content-Type
933: */
1.35 frystyk 934: PUBLIC HTLevel HTAnchor_level (HTParentAnchor * me)
1.20 frystyk 935: {
1.52 frystyk 936: if (me && me->type_parameters) {
937: char * level = HTAssocList_findObject(me->type_parameters, "level");
938: return HTAtom_for(level);
939: }
940: return NULL;
1.20 frystyk 941: }
942:
1.52 frystyk 943: PUBLIC BOOL HTAnchor_setLevel (HTParentAnchor * me, HTLevel level)
1.20 frystyk 944: {
1.52 frystyk 945: return HTAnchor_addFormatParam(me, "level", HTAtom_name(level));
1.20 frystyk 946: }
947:
948: /*
1.17 frystyk 949: ** Content Encoding
950: */
1.47 frystyk 951: PUBLIC HTList * HTAnchor_encoding (HTParentAnchor * me)
1.1 timbl 952: {
1.17 frystyk 953: return me ? me->content_encoding : NULL;
1.1 timbl 954: }
955:
1.63 frystyk 956: PUBLIC BOOL HTAnchor_addEncoding (HTParentAnchor * me, HTEncoding encoding)
1.17 frystyk 957: {
1.47 frystyk 958: if (me && encoding) {
959: if (!me->content_encoding) me->content_encoding = HTList_new();
960: return HTList_addObject(me->content_encoding, encoding);
961: }
962: return NO;
1.17 frystyk 963: }
964:
1.77 frystyk 965: PUBLIC BOOL HTAnchor_deleteEncoding (HTParentAnchor * me, HTEncoding encoding)
1.67 frystyk 966: {
967: return (me && me->content_encoding && encoding) ?
968: HTList_removeObject(me->content_encoding, encoding) : NO;
969: }
970:
1.77 frystyk 971: PUBLIC BOOL HTAnchor_deleteEncodingAll (HTParentAnchor * me)
972: {
973: if (me && me->content_encoding) {
974: HTList_delete(me->content_encoding);
975: me->content_encoding = NULL;
976: return YES;
977: }
978: return NO;
979: }
980:
1.17 frystyk 981: /*
1.21 frystyk 982: ** Content Language
983: */
1.47 frystyk 984: PUBLIC HTList * HTAnchor_language (HTParentAnchor * me)
1.21 frystyk 985: {
1.63 frystyk 986: if (me) {
987: if (me->content_language == NULL && me->headers) {
988: char * value = HTAssocList_findObject(me->headers, "content-language");
989: char * field;
990: if (!me->content_language) me->content_language = HTList_new();
991: while ((field = HTNextField(&value)) != NULL) {
992: char * lc = field;
993: while ((*lc = TOLOWER(*lc))) lc++;
994: HTList_addObject(me->content_language, HTAtom_for(field));
995: }
996: }
997: return me->content_language;
998: }
999: return NULL;
1.21 frystyk 1000: }
1001:
1.63 frystyk 1002: PUBLIC BOOL HTAnchor_addLanguage (HTParentAnchor * me, HTLanguage language)
1.21 frystyk 1003: {
1.47 frystyk 1004: if (me && language) {
1005: if (!me->content_language) me->content_language = HTList_new();
1006: return HTList_addObject(me->content_language, language);
1.77 frystyk 1007: }
1008: return NO;
1009: }
1010:
1011: PUBLIC BOOL HTAnchor_deleteLanguageAll (HTParentAnchor * me)
1012: {
1013: if (me && me->content_language) {
1014: HTList_delete(me->content_language);
1015: me->content_language = NULL;
1016: return YES;
1.47 frystyk 1017: }
1018: return NO;
1.21 frystyk 1019: }
1020:
1021: /*
1.17 frystyk 1022: ** Content Length
1023: */
1.35 frystyk 1024: PUBLIC long int HTAnchor_length (HTParentAnchor * me)
1.1 timbl 1025: {
1.17 frystyk 1026: return me ? me->content_length : -1;
1.1 timbl 1027: }
1028:
1.35 frystyk 1029: PUBLIC void HTAnchor_setLength (HTParentAnchor * me, long int length)
1.17 frystyk 1030: {
1031: if (me) me->content_length = length;
1032: }
1.1 timbl 1033:
1.49 frystyk 1034: PUBLIC void HTAnchor_addLength (HTParentAnchor * me, long int deltalength)
1035: {
1036: if (me) {
1037: if (me->content_length < 0)
1038: me->content_length = deltalength;
1039: else
1040: me->content_length += deltalength;
1041: }
1042: }
1043:
1.17 frystyk 1044: /*
1.63 frystyk 1045: ** Content Transfer Encoding
1046: */
1.73 frystyk 1047: PUBLIC HTEncoding HTAnchor_contentTransferEncoding (HTParentAnchor * me)
1.63 frystyk 1048: {
1.73 frystyk 1049: return me ? me->cte : NULL;
1.63 frystyk 1050: }
1051:
1.73 frystyk 1052: PUBLIC void HTAnchor_setContentTransferEncoding (HTParentAnchor * me, HTEncoding cte)
1.63 frystyk 1053: {
1.73 frystyk 1054: if (me) me->cte = cte;
1.63 frystyk 1055: }
1056:
1057: /*
1.17 frystyk 1058: ** Allowed methods (Allow)
1.1 timbl 1059: */
1.63 frystyk 1060: PUBLIC HTMethod HTAnchor_allow (HTParentAnchor * me)
1.17 frystyk 1061: {
1.63 frystyk 1062: if (me) {
1063: if (me->allow == 0 && me->headers) {
1064: char * value = HTAssocList_findObject(me->headers, "allow");
1065: char * field;
1066:
1067: /*
1068: ** We treat methods allowed on this object as case insensitive
1069: ** in case we receive the information over the net - that is -
1070: ** in the Allow header.
1071: */
1072: while ((field = HTNextField(&value)) != NULL) {
1073: HTMethod new_method;
1074: if ((new_method = HTMethod_enum(field)) != METHOD_INVALID)
1075: me->allow |= new_method;
1076: }
1077: }
1078: return me->allow;
1079: }
1080: return METHOD_INVALID;
1.17 frystyk 1081: }
1.1 timbl 1082:
1.63 frystyk 1083: PUBLIC void HTAnchor_setAllow (HTParentAnchor * me, HTMethod methodset)
1.1 timbl 1084: {
1.63 frystyk 1085: if (me) me->allow = methodset;
1.1 timbl 1086: }
1087:
1.63 frystyk 1088: PUBLIC void HTAnchor_appendAllow (HTParentAnchor * me, HTMethod methodset)
1.1 timbl 1089: {
1.63 frystyk 1090: if (me) me->allow |= methodset;
1.1 timbl 1091: }
1092:
1.17 frystyk 1093: /*
1094: ** Title
1.2 timbl 1095: */
1.46 frystyk 1096: PUBLIC const char * HTAnchor_title (HTParentAnchor * me)
1.1 timbl 1097: {
1.63 frystyk 1098: if (me) {
1099: if (me->title)
1100: return *me->title ? me->title : NULL;
1101: if (me->headers) {
1102: char * value = HTAssocList_findObject(me->headers, "title");
1103: char * title;
1104: if ((title = HTNextField(&value))) StrAllocCopy(me->title, title);
1105: return me->title;
1106: }
1107: }
1108: return NULL;
1.17 frystyk 1109: }
1.1 timbl 1110:
1.46 frystyk 1111: PUBLIC void HTAnchor_setTitle (HTParentAnchor * me, const char * title)
1.17 frystyk 1112: {
1.76 frystyk 1113: if (me && title) {
1114: char * ptr;
1115: StrAllocCopy(me->title, title);
1116: ptr = me->title;
1117: while (*ptr) {
1118: if (isspace((int) *ptr)) *ptr = ' ';
1119: ptr++;
1120: }
1121: }
1.2 timbl 1122: }
1123:
1.46 frystyk 1124: PUBLIC void HTAnchor_appendTitle (HTParentAnchor * me, const char * title)
1.17 frystyk 1125: {
1126: if (me && title) StrAllocCat(me->title, title);
1127: }
1.2 timbl 1128:
1.17 frystyk 1129: /*
1130: ** Version
1.2 timbl 1131: */
1.41 frystyk 1132: PUBLIC char * HTAnchor_version (HTParentAnchor * me)
1.17 frystyk 1133: {
1.63 frystyk 1134: if (me) {
1135: if (me->version)
1136: return *me->version ? me->version : NULL;
1137: if (me->headers) {
1138: char * value = HTAssocList_findObject(me->headers, "version");
1139: char * version;
1140: if ((version = HTNextField(&value)))
1141: StrAllocCopy(me->version, version);
1142: return me->version;
1143: }
1144: }
1145: return NULL;
1.17 frystyk 1146: }
1.2 timbl 1147:
1.46 frystyk 1148: PUBLIC void HTAnchor_setVersion (HTParentAnchor * me, const char * version)
1.2 timbl 1149: {
1.17 frystyk 1150: if (me && version) StrAllocCopy(me->version, version);
1.2 timbl 1151: }
1152:
1.17 frystyk 1153: /*
1154: ** Derived from
1.2 timbl 1155: */
1.41 frystyk 1156: PUBLIC char * HTAnchor_derived (HTParentAnchor * me)
1.17 frystyk 1157: {
1.63 frystyk 1158: if (me) {
1159: if (me->derived_from)
1160: return *me->derived_from ? me->derived_from : NULL;
1161: if (me->headers) {
1162: char * value = HTAssocList_findObject(me->headers, "derived-from");
1163: char * derived_from;
1164: if ((derived_from = HTNextField(&value)))
1165: StrAllocCopy(me->derived_from, derived_from);
1166: return me->derived_from;
1167: }
1168: }
1169: return NULL;
1.17 frystyk 1170: }
1171:
1.46 frystyk 1172: PUBLIC void HTAnchor_setDerived (HTParentAnchor * me, const char *derived_from)
1.17 frystyk 1173: {
1174: if (me && derived_from) StrAllocCopy(me->derived_from, derived_from);
1175: }
1.2 timbl 1176:
1.17 frystyk 1177: /*
1.52 frystyk 1178: ** Content MD5
1179: */
1180: PUBLIC char * HTAnchor_md5 (HTParentAnchor * me)
1181: {
1.63 frystyk 1182: if (me) {
1183: if (me->content_md5)
1184: return *me->content_md5 ? me->content_md5 : NULL;
1185: if (me->headers) {
1186: char * value = HTAssocList_findObject(me->headers, "content-md5");
1187: char * md5;
1188: if ((md5 = HTNextField(&value))) StrAllocCopy(me->content_md5,md5);
1189: return me->content_md5;
1190: }
1191: }
1192: return NULL;
1.52 frystyk 1193: }
1194:
1.63 frystyk 1195: PUBLIC BOOL HTAnchor_setMd5 (HTParentAnchor * me, const char * hash)
1.52 frystyk 1196: {
1.63 frystyk 1197: if (me && hash) {
1198: StrAllocCopy(me->content_md5, hash);
1199: return YES;
1200: }
1201: return NO;
1.52 frystyk 1202: }
1203:
1204: /*
1.28 frystyk 1205: ** Date
1206: */
1.41 frystyk 1207: PUBLIC time_t HTAnchor_date (HTParentAnchor * me)
1208: {
1.63 frystyk 1209: if (me) {
1210: if (me->date == (time_t) -1 && me->headers) {
1211: char * value = HTAssocList_findObject(me->headers, "date");
1212: if (value) me->date = HTParseTime(value, NULL, YES);
1213: }
1214: return me->date;
1215: }
1216: return (time_t) -1;
1.41 frystyk 1217: }
1218:
1.46 frystyk 1219: PUBLIC void HTAnchor_setDate (HTParentAnchor * me, const time_t date)
1.28 frystyk 1220: {
1.41 frystyk 1221: if (me) me->date = date;
1.28 frystyk 1222: }
1223:
1224: /*
1225: ** Expires
1226: */
1.41 frystyk 1227: PUBLIC time_t HTAnchor_expires (HTParentAnchor * me)
1228: {
1.63 frystyk 1229: if (me) {
1230: if (me->expires == (time_t) -1 && me->headers) {
1231: char * value = HTAssocList_findObject(me->headers, "expires");
1232: if (value) me->expires = HTParseTime(value, NULL, YES);
1233: }
1234: return me->expires;
1235: }
1236: return (time_t) -1;
1.41 frystyk 1237: }
1238:
1.46 frystyk 1239: PUBLIC void HTAnchor_setExpires (HTParentAnchor * me, const time_t expires)
1.28 frystyk 1240: {
1.41 frystyk 1241: if (me) me->expires = expires;
1.28 frystyk 1242: }
1243:
1244: /*
1245: ** Last Modified
1246: */
1.41 frystyk 1247: PUBLIC time_t HTAnchor_lastModified (HTParentAnchor * me)
1248: {
1.63 frystyk 1249: if (me) {
1250: if (me->last_modified == (time_t) -1 && me->headers) {
1251: char * value = HTAssocList_findObject(me->headers,"last-modified");
1252: if (value) me->last_modified = HTParseTime(value, NULL, YES);
1253: }
1254: return me->last_modified;
1255: }
1256: return (time_t) -1;
1.41 frystyk 1257: }
1258:
1.46 frystyk 1259: PUBLIC void HTAnchor_setLastModified (HTParentAnchor * me, const time_t lm)
1.28 frystyk 1260: {
1.41 frystyk 1261: if (me) me->last_modified = lm;
1.28 frystyk 1262: }
1263:
1264: /*
1.59 frystyk 1265: ** Age
1266: */
1267: PUBLIC time_t HTAnchor_age (HTParentAnchor * me)
1268: {
1.63 frystyk 1269: if (me) {
1270: if (me->age == (time_t) -1 && me->headers) {
1271: char * value = HTAssocList_findObject(me->headers, "age");
1272: if (value) me->age = atol(value);
1273: }
1274: return me->age;
1275: }
1276: return (time_t) -1;
1.59 frystyk 1277: }
1278:
1279: PUBLIC void HTAnchor_setAge (HTParentAnchor * me, const time_t age)
1280: {
1281: if (me) me->age = age;
1282: }
1283:
1284: /*
1.52 frystyk 1285: ** Entity Tag
1286: */
1287: PUBLIC char * HTAnchor_etag (HTParentAnchor * me)
1288: {
1.63 frystyk 1289: if (me) {
1290: if (me->etag)
1291: return *me->etag ? me->etag : NULL;
1292: if (me->headers) {
1293: char * value = HTAssocList_findObject(me->headers, "etag");
1294: char * etag;
1295: if ((etag = HTNextField(&value))) StrAllocCopy(me->etag, etag);
1296: return me->etag;
1297: }
1298: }
1299:
1.52 frystyk 1300: return me ? me->etag : NULL;
1301: }
1302:
1303: PUBLIC void HTAnchor_setEtag (HTParentAnchor * me, const char * etag)
1304: {
1.78 frystyk 1305: if (me && etag && me->etag != etag) StrAllocCopy(me->etag, etag);
1.52 frystyk 1306: }
1307:
1308: PUBLIC BOOL HTAnchor_isEtagWeak (HTParentAnchor * me)
1309: {
1310: return (me && me->etag && !strncasecomp(me->etag, "W/", 2));
1311: }
1312:
1313: /*
1.63 frystyk 1314: ** Original headers (if any)
1.17 frystyk 1315: */
1.63 frystyk 1316: PUBLIC HTAssocList * HTAnchor_header (HTParentAnchor * me)
1.2 timbl 1317: {
1.63 frystyk 1318: return me ? me->headers : NULL;
1.2 timbl 1319: }
1320:
1.63 frystyk 1321: PUBLIC BOOL HTAnchor_setHeader (HTParentAnchor * me, HTAssocList * headers)
1.2 timbl 1322: {
1.17 frystyk 1323: if (me) {
1.63 frystyk 1324: me->headers = headers;
1325: return YES;
1.17 frystyk 1326: }
1.63 frystyk 1327: return NO;
1.2 timbl 1328: }
1329:
1.23 frystyk 1330: /*
1.59 frystyk 1331: ** Validate anchor values and finish up parsing
1.2 timbl 1332: */
1.59 frystyk 1333: PUBLIC void HTAnchor_setHeaderParsed (HTParentAnchor * me)
1.2 timbl 1334: {
1.59 frystyk 1335: if (me) {
1336:
1337: /*
1338: ** If the server did not send a date then use the current time
1339: */
1340: if (me->date < 0) me->date = time(NULL);
1341:
1342: /*
1343: ** If we don't get a Last-Modified header then set it to date
1344: */
1.62 frystyk 1345: if (ANCH_TRACE) HTTrace("HTAnchor.... Anchor is parsed\n");
1.59 frystyk 1346: me->header_parsed = YES;
1347: }
1.23 frystyk 1348: }
1349:
1.59 frystyk 1350: PUBLIC BOOL HTAnchor_headerParsed (HTParentAnchor * me)
1.23 frystyk 1351: {
1.59 frystyk 1352: return (me ? me->header_parsed : NO);
1.2 timbl 1353: }
1354:
1.17 frystyk 1355: /* Clear Header Information
1356: ** ------------------------
1357: */
1.35 frystyk 1358: PUBLIC void HTAnchor_clearHeader (HTParentAnchor * me)
1.2 timbl 1359: {
1.63 frystyk 1360: if (ANCH_TRACE) HTTrace("HTAnchor.... Clear all header information\n");
1361: me->allow = METHOD_INVALID;
1.48 frystyk 1362: if (me->content_encoding) {
1363: HTList_delete(me->content_encoding);
1.65 frystyk 1364: me->content_encoding = NULL;
1.48 frystyk 1365: }
1.17 frystyk 1366: if (me->content_language) {
1367: HTList_delete(me->content_language);
1.65 frystyk 1368: me->content_language = NULL;
1.9 frystyk 1369: }
1.51 frystyk 1370: HT_FREE(me->content_base);
1371: HT_FREE(me->content_location);
1.17 frystyk 1372: me->content_length = -1; /* Invalid */
1.57 frystyk 1373:
1.59 frystyk 1374: /* Delete the title */
1375: HT_FREE(me->title);
1376:
1.57 frystyk 1377: /* Clear the content type */
1.17 frystyk 1378: me->content_type = WWW_UNKNOWN;
1.52 frystyk 1379: if (me->type_parameters) {
1380: HTAssocList_delete(me->type_parameters);
1381: me->type_parameters = NULL;
1.72 frystyk 1382: }
1383:
1384: /* Meta tags */
1385: if (me->meta_tags) {
1386: HTAssocList_delete(me->meta_tags);
1387: me->meta_tags = NULL;
1.52 frystyk 1388: }
1.57 frystyk 1389:
1390: /* Dates etc. */
1.28 frystyk 1391: me->date = (time_t) -1;
1392: me->expires = (time_t) -1;
1393: me->last_modified = (time_t) -1;
1.59 frystyk 1394: me->age = (time_t) -1;
1.17 frystyk 1395:
1.43 frystyk 1396: HT_FREE(me->derived_from);
1397: HT_FREE(me->version);
1.58 frystyk 1398: HT_FREE(me->etag);
1.63 frystyk 1399:
1400: /* Delete any original headers */
1401: if (me->headers) HTAssocList_delete(me->headers);
1402: me->headers = NULL;
1.18 frystyk 1403:
1.62 frystyk 1404: /* Anchor is cleared */
1405: me->header_parsed = NO;
1.1 timbl 1406: }
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