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Diffstat (limited to 'WWW/Library/Implementation/HTAnchor.h')
| -rw-r--r-- | WWW/Library/Implementation/HTAnchor.h | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/WWW/Library/Implementation/HTAnchor.h b/WWW/Library/Implementation/HTAnchor.h new file mode 100644 index 0000000..3b1e6e6 --- /dev/null +++ b/WWW/Library/Implementation/HTAnchor.h @@ -0,0 +1,412 @@ +/* + * $LynxId: HTAnchor.h,v 1.40 2018/03/11 18:43:50 tom Exp $ + * + * Hypertext "Anchor" Object HTAnchor.h + * ========================== + * + * An anchor represents a region of a hypertext document which is linked + * to another anchor in the same or a different document. + */ + +#ifndef HTANCHOR_H +#define HTANCHOR_H + +/* Version 0 (TBL) written in Objective-C for the NeXT browser */ +/* Version 1 of 24-Oct-1991 (JFG), written in C, browser-independent */ + +#include <HTList.h> +#include <HTBTree.h> +#include <HTChunk.h> +#include <HTAtom.h> +#include <UCDefs.h> + +typedef struct _HyperDoc HyperDoc; /* Ready for forward references */ +typedef struct _HTAnchor HTAnchor; +typedef struct _HTParentAnchor HTParentAnchor; +typedef struct _HTParentAnchor0 HTParentAnchor0; + +#include <HTFormat.h> + +#ifdef __cplusplus +extern "C" { +#endif + struct _HTAnchor { + /* Generic anchor */ + HTParentAnchor0 *parent; /* Parent of this anchor (self for adults) */ + }; + +#define HASH_TYPE unsigned short + + struct _HTParentAnchor0 { /* One for adult_table, + * generally not used outside HTAnchor.c */ + /* Common part from the generic anchor structure */ + HTParentAnchor0 *parent; /* (self) */ + + /* ParentAnchor0-specific information */ + char *address; /* Absolute address of this node */ + HTParentAnchor *info; /* additional info, allocated on demand */ + + HTBTree *children; /* Subanchors <a name="tag">, sorted by tag */ + HTList sources; /* List of anchors pointing to this, if any */ + + HTList _add_adult; /* - just a memory for list entry:) */ + HASH_TYPE adult_hash; /* adult list number */ + BOOL underway; /* Document about to be attached to it */ + }; + + /* + * Separated from the above to save memory: allocated on demand, + * it is nearly 1:1 to HText (well, sometimes without HText...), + * available for SGML, HTML, and HText stages. + * [being precise, we currently allocate it before HTLoadDocument(), + * in HTAnchor_findAddress() and HTAnchor_parent()]. + */ + struct _HTParentAnchor { + /* Common part from the generic anchor structure */ + HTParentAnchor0 *parent; /* Parent of this anchor */ + + /* ParentAnchor-specific information */ + HTList children_notag; /* Subanchors <a href=...>, tag is NULL */ + HyperDoc *document; /* The document within which this is an anchor */ + + char *address; /* parent->address, a pointer */ + bstring *post_data; /* Posting data */ + char *post_content_type; /* Type of post data */ + char *bookmark; /* Bookmark filename */ + HTFormat format; /* Pointer to node format descriptor */ + char *charset; /* Pointer to character set (kludge, for now */ + BOOL isIndex; /* Acceptance of a keyword search */ + char *isIndexAction; /* URL of isIndex server */ + char *isIndexPrompt; /* Prompt for isIndex query */ + char *title; /* Title of document */ + char *owner; /* Owner of document */ + char *RevTitle; /* TITLE in REV="made" or REV="owner" LINK */ + char *citehost; /* Citehost from REL="citehost" LINK */ +#ifdef USE_COLOR_STYLE + char *style; +#endif + + HTList *methods; /* Methods available as HTAtoms */ + void *protocol; /* Protocol object */ + char *physical; /* Physical address */ + BOOL isISMAPScript; /* Script for clickable image map */ + BOOL isHEAD; /* Document is headers from a HEAD request */ + BOOL safe; /* Safe */ +#ifdef USE_SOURCE_CACHE + char *source_cache_file; + HTChunk *source_cache_chunk; +#endif + char *FileCache; /* Path to a disk-cached copy (see src/HTFWriter.c) */ + char *SugFname; /* Suggested filename */ + char *cache_control; /* Cache-Control */ + BOOL no_cache; /* Cache-Control, Pragma or META "no-cache"? */ + BOOL inHEAD; /* HTMIMEConvert is decoding server-headers */ + BOOL inBASE; /* duplicated from HTStructured (HTML.c/h) */ + HTChunk http_headers; + BOOL no_content_encoding; /* server did not use C-T? */ + char *content_type_params; /* Content-Type (with parameters if any) */ + char *content_type; /* Content-Type */ + char *content_language; /* Content-Language */ + char *content_encoding; /* Compression algorithm */ + char *content_base; /* Content-Base */ + char *content_disposition; /* Content-Disposition */ + char *content_location; /* Content-Location */ + char *content_md5; /* Content-MD5 */ + char *message_id; /* Message-ID */ + char *subject; /* Subject */ + off_t header_length; /* length of headers */ + off_t content_length; /* Content-Length */ + off_t actual_length; /* actual length may differ */ + char *date; /* Date */ + char *expires; /* Expires */ + char *last_modified; /* Last-Modified */ + char *ETag; /* ETag (HTTP1.1 cache validator) */ + char *server; /* Server */ + UCAnchorInfo *UCStages; /* chartrans stages */ + HTList *imaps; /* client side image maps */ + }; + + typedef HTAtom HTLinkType; + + typedef struct { + /* Common part from the generic anchor structure */ + HTParentAnchor0 *parent; /* Parent of this anchor */ + + /* ChildAnchor-specific information */ + char *tag; /* #fragment, relative to the parent */ + + HTAnchor *dest; /* The anchor to which this leads */ + HTLinkType *type; /* Semantics of this link */ + + HTList _add_children_notag; /* - just a memory for list entry:) */ + HTList _add_sources; /* - just a memory for list entry:) */ + } HTChildAnchor; + + /* + * DocAddress structure is used for loading an absolute anchor with all + * needed information including posting data and post content type. + */ + typedef struct _DocAddress { + char *address; + bstring *post_data; + char *post_content_type; + char *bookmark; + BOOL isHEAD; + BOOL safe; + } DocAddress; + + /* "internal" means "within the same document, with certainty". */ + extern HTLinkType *HTInternalLink; + + /* Create or find a child anchor with a possible link + * -------------------------------------------------- + * + * Create new anchor with a given parent and possibly + * a name, and possibly a link to a _relatively_ named anchor. + * (Code originally in ParseHTML.h) + */ + extern HTChildAnchor *HTAnchor_findChildAndLink(HTParentAnchor *parent, /* May not be 0 */ + const char *tag, /* May be "" or 0 */ + const char *href, /* May be "" or 0 */ + HTLinkType *ltype); /* May be 0 */ + + /* Create new or find old parent anchor + * ------------------------------------ + * + * This one is for a reference which is found in a document, and might + * not be already loaded. + * Note: You are not guaranteed a new anchor -- you might get an old one, + * like with fonts. + */ + extern HTParentAnchor *HTAnchor_findAddress(const DocAddress *address); + + /* Create new or find old named anchor - simple form + * ------------------------------------------------- + * + * Like the previous one, but simpler to use for simple cases. + * No post data etc. can be supplied. - kw + */ + extern HTParentAnchor *HTAnchor_findSimpleAddress(const char *url); + + /* Delete an anchor and possibly related things (auto garbage collection) + * -------------------------------------------- + * + * The anchor is only deleted if the corresponding document is not loaded. + * All outgoing links from children are deleted, and children are + * removed from the sources lists of their targets. + * We also try to delete the targets whose documents are not loaded. + * If this anchor's sources list is empty, we delete it and its children. + */ + extern BOOL HTAnchor_delete(HTParentAnchor0 *me); + + /* + * Unnamed children (children_notag) have no sense without HText - + * delete them and their links if we are about to free HText. + * Document currently exists. Called within HText_free(). + */ + extern void HTAnchor_delete_links(HTParentAnchor *me); + +#ifdef USE_SOURCE_CACHE + extern void HTAnchor_clearSourceCache(HTParentAnchor *me); +#endif + + /* Data access functions + * --------------------- + */ + extern HTParentAnchor *HTAnchor_parent(HTAnchor * me); + + extern void HTAnchor_setDocument(HTParentAnchor *me, + HyperDoc *doc); + + extern HyperDoc *HTAnchor_document(HTParentAnchor *me); + + /* Returns the full URI of the anchor, child or parent + * as a malloc'd string to be freed by the caller. + */ + extern char *HTAnchor_address(HTAnchor * me); + + extern char *HTAnchor_short_address(HTAnchor * me); + + extern void HTAnchor_setFormat(HTParentAnchor *me, + HTFormat form); + + extern HTFormat HTAnchor_format(HTParentAnchor *me); + + extern void HTAnchor_setIndex(HTParentAnchor *me, + const char *address); + + extern void HTAnchor_setPrompt(HTParentAnchor *me, + const char *prompt); + + extern BOOL HTAnchor_isIndex(HTParentAnchor *me); + + extern BOOL HTAnchor_isISMAPScript(HTAnchor * me); + +#if defined(USE_COLOR_STYLE) + extern const char *HTAnchor_style(HTParentAnchor *me); + + extern void HTAnchor_setStyle(HTParentAnchor *me, + const char *style); +#endif + + /* Title handling. + */ + extern const char *HTAnchor_title(HTParentAnchor *me); + + extern void HTAnchor_setTitle(HTParentAnchor *me, + const char *title); + + extern void HTAnchor_appendTitle(HTParentAnchor *me, + const char *title); + + /* Bookmark handling. + */ + extern const char *HTAnchor_bookmark(HTParentAnchor *me); + + extern void HTAnchor_setBookmark(HTParentAnchor *me, + const char *bookmark); + + /* Owner handling. + */ + extern const char *HTAnchor_owner(HTParentAnchor *me); + + extern void HTAnchor_setOwner(HTParentAnchor *me, + const char *owner); + + /* TITLE handling in LINKs with REV="made" or REV="owner". - FM + */ + extern const char *HTAnchor_RevTitle(HTParentAnchor *me); + + extern void HTAnchor_setRevTitle(HTParentAnchor *me, + const char *title); + + /* Citehost for bibp links from LINKs with REL="citehost". - RDC + */ + extern const char *HTAnchor_citehost(HTParentAnchor *me); + + extern void HTAnchor_setCitehost(HTParentAnchor *me, + const char *citehost); + + /* Suggested filename handling. - FM + * (will be loaded if we had a Content-Disposition + * header or META element with filename=name.suffix) + */ + extern const char *HTAnchor_SugFname(HTParentAnchor *me); + + /* HTTP Headers. + */ + extern const char *HTAnchor_http_headers(HTParentAnchor *me); + + /* Content-Type handling (parameter list). + */ + extern const char *HTAnchor_content_type_params(HTParentAnchor *me); + + /* Content-Type handling. - FM + */ + extern const char *HTAnchor_content_type(HTParentAnchor *me); + + /* Content-Encoding handling. - FM + * (will be loaded if we had a Content-Encoding + * header.) + */ + extern const char *HTAnchor_content_encoding(HTParentAnchor *me); + + /* Last-Modified header handling. - FM + */ + extern const char *HTAnchor_last_modified(HTParentAnchor *me); + + /* Date header handling. - FM + */ + extern const char *HTAnchor_date(HTParentAnchor *me); + + /* Server header handling. - FM + */ + extern const char *HTAnchor_server(HTParentAnchor *me); + + /* Safe header handling. - FM + */ + extern BOOL HTAnchor_safe(HTParentAnchor *me); + + /* Content-Base header handling. - FM + */ + extern const char *HTAnchor_content_base(HTParentAnchor *me); + + /* Content-Location header handling. - FM + */ + extern const char *HTAnchor_content_location(HTParentAnchor *me); + + /* Message-ID, used for mail replies - kw + */ + extern const char *HTAnchor_messageID(HTParentAnchor *me); + + extern BOOL HTAnchor_setMessageID(HTParentAnchor *me, + const char *messageid); + + /* Subject, used for mail replies - kw + */ + extern const char *HTAnchor_subject(HTParentAnchor *me); + + extern BOOL HTAnchor_setSubject(HTParentAnchor *me, + const char *subject); + + /* Manipulation of links + * --------------------- + */ + extern HTAnchor *HTAnchor_followLink(HTChildAnchor *me); + + extern HTAnchor *HTAnchor_followTypedLink(HTChildAnchor *me, + HTLinkType *type); + + /* Read and write methods + * ---------------------- + */ + extern HTList *HTAnchor_methods(HTParentAnchor *me); + + /* Protocol + * -------- + */ + extern void *HTAnchor_protocol(HTParentAnchor *me); + + extern void HTAnchor_setProtocol(HTParentAnchor *me, + void *protocol); + + /* Physical address + * ---------------- + */ + extern char *HTAnchor_physical(HTParentAnchor *me); + + extern void HTAnchor_setPhysical(HTParentAnchor *me, + char *protocol); + + extern LYUCcharset *HTAnchor_getUCInfoStage(HTParentAnchor *me, + int which_stage); + + extern int HTAnchor_getUCLYhndl(HTParentAnchor *me, + int which_stage); + + extern LYUCcharset *HTAnchor_setUCInfoStage(HTParentAnchor *me, + int LYhndl, + int which_stage, + int set_by); + + extern LYUCcharset *HTAnchor_setUCInfoStage(HTParentAnchor *me, + int LYhndl, + int which_stage, + int set_by); + + extern LYUCcharset *HTAnchor_resetUCInfoStage(HTParentAnchor *me, + int LYhndl, + int which_stage, + int set_by); + + extern LYUCcharset *HTAnchor_copyUCInfoStage(HTParentAnchor *me, + int to_stage, + int from_stage, + int set_by); + + extern void ImageMapList_free(HTList *list); + +#ifdef __cplusplus +} +#endif +#endif /* HTANCHOR_H */ |