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[project @ 2003-07-07 22:10:51 by jmb]

Browse Source 
Rewrite plugin system backend.

svn path=/import/netsurf/; revision=210
This commit is contained in:
John Mark Bell 2003-07-07 22:10:51 +00:00
parent 1abf8018a9
commit 133c3ee759
10 changed files with 343 additions and 314 deletions
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3
Docs/TODO-General
View File

@ -1,11 +1,10 @@
$Id: TODO-General,v 1.3 2003/06/01 21:56:27 jmb Exp $
$Id: TODO-General,v 1.4 2003/07/07 22:10:51 jmb Exp $
TODO-General for NetSurf.
This file documents general things which need doing.
Browser Redirect
Disk Cache
Saving
Printing

6
Docs/TODO-HTML
View File

@ -1,4 +1,4 @@
$Id: TODO-HTML,v 1.2 2003/06/01 01:02:29 jmb Exp $
$Id: TODO-HTML,v 1.3 2003/07/07 22:10:51 jmb Exp $
TODO-HTML file for NetSurf.
@ -15,13 +15,13 @@ Text Formatting:
<VAR>, <ABBR> and <ACRONYM> tags
<Q> tag
Lists
Lists:
<LI>
<OL>,<UL>
Tables:
Borders,
row spanning
row spanning (only rowspan=0 needs implementing)
column spanning (only colspan=0 needs implementing)
Images:

7
Docs/developer
View File

@ -11,6 +11,7 @@ The source is split at top level as follows:
content -- fetching, caching, and converting content
css -- CSS parser and interfaces
debug -- defines functions which allow debugging under *nix
desktop -- non-platform specific front-end
render -- HTML processing and layout
riscos -- RISC OS specific code
@ -33,10 +34,12 @@ The cache stores this converted content. When content is retrieved from the
cache, content_revive() should result in content which can be displayed (eg. by
loading any images and styles required and updating pointers to them).
Code should not usually use the fetch_* and cache_* functions directly, except
for cache_free(). Instead use fetchcache(), which checks the cache for a url and
Code should not usually use the fetch_* and cache_* functions directly.
Instead use fetchcache(), which checks the cache for a url and
fetches, converts, and caches it if not present.
See content/overview for more information.
________________________________________________________________________________
css -- CSS parser and interfaces

12
content/content.c
View File

@ -16,17 +16,22 @@
#include "netsurf/riscos/jpeg.h"
#include "netsurf/riscos/png.h"
#include "netsurf/riscos/gif.h"
#include "netsurf/riscos/plugin.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
/* mime_map must be in sorted order by mime_type */
struct mime_entry {
char mime_type[16];
char mime_type[40];
content_type type;
};
static const struct mime_entry mime_map[] = {
#ifdef riscos
{"application/java-vm", CONTENT_PLUGIN},
{"application/x-shockwave-flash", CONTENT_PLUGIN},
{"audio/midi", CONTENT_PLUGIN},
{"audio/x-midi", CONTENT_PLUGIN},
{"image/gif", CONTENT_GIF},
{"image/jpeg", CONTENT_JPEG},
{"image/png", CONTENT_PNG},
@ -63,6 +68,8 @@ static const struct handler_entry handler_map[] = {
nspng_reformat, nspng_destroy, nspng_redraw},
{nsgif_create, nsgif_process_data, nsgif_convert, nsgif_revive,
nsgif_reformat, nsgif_destroy, nsgif_redraw},
{plugin_create, plugin_process_data, plugin_convert, plugin_revive,
plugin_reformat, plugin_destroy, plugin_redraw},
#endif
{other_create, other_process_data, other_convert, other_revive,
other_reformat, other_destroy, 0}
@ -114,12 +121,13 @@ struct content * content_create(char *url)
* content_set_type -- initialise the content for the specified mime type
*/
void content_set_type(struct content *c, content_type type)
void content_set_type(struct content *c, content_type type, char* mime_type)
{
assert(c->status == CONTENT_STATUS_TYPE_UNKNOWN);
assert(type < CONTENT_UNKNOWN);
LOG(("content %s, type %i", c->url, type));
c->type = type;
c->mime_type = mime_type;
c->status = CONTENT_STATUS_LOADING;
content_broadcast(c, CONTENT_MSG_LOADING, 0);
handler_map[type].create(c);

12
content/content.h
View File

@ -48,6 +48,7 @@ typedef enum {
#ifdef riscos
CONTENT_PNG,
CONTENT_GIF,
CONTENT_PLUGIN,
#endif
CONTENT_OTHER,
CONTENT_UNKNOWN /* content-type not received yet */
@ -85,6 +86,7 @@ struct content
{
char *url;
content_type type;
char *mime_type;
enum {
CONTENT_STATUS_TYPE_UNKNOWN, /* type not yet known */
CONTENT_STATUS_LOADING, /* content is being fetched or converted
@ -156,6 +158,14 @@ struct content
osspriteop_area *sprite_area; // Sprite area
char *sprite_image; // Sprite image
} gif;
/* Structure for plugin */
struct
{
char *data; /* object data */
unsigned long length; /* object length */
char* sysvar; /* system variable set by plugin */
} plugin;
#endif
/* downloads */
struct
@ -180,7 +190,7 @@ struct content
content_type content_lookup(const char *mime_type);
struct content * content_create(char *url);
void content_set_type(struct content *c, content_type type);
void content_set_type(struct content *c, content_type type, char *mime_type);
void content_process_data(struct content *c, char *data, unsigned long size);
void content_convert(struct content *c, unsigned long width, unsigned long height);
void content_revive(struct content *c, unsigned long width, unsigned long height);

4
content/fetchcache.c
View File

@ -64,9 +64,9 @@ void fetchcache_callback(fetch_msg msg, void *p, char *data, unsigned long size)
if ((semic = strchr(mime_type, ';')) != 0)
*semic = 0; /* remove "; charset=..." */
type = content_lookup(mime_type);
free(mime_type);
LOG(("FETCH_TYPE, type %u", type));
content_set_type(c, type);
content_set_type(c, type, mime_type);
free(mime_type);
break;
case FETCH_DATA:

120
render/box.c
View File

@ -75,12 +75,12 @@ void box_normalise_table_row(struct box *row,
static void box_normalise_inline_container(struct box *cont);
static void gadget_free(struct gui_gadget* g);
static void box_free_box(struct box *box);
static struct box* box_object(xmlNode *n, struct content *content,
struct css_style *style, char *href);
static struct box* box_embed(xmlNode *n, struct content *content,
struct css_style *style, char *href);
static struct box* box_applet(xmlNode *n, struct content *content,
struct css_style *style, char *href);
static struct result box_object(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_embed(xmlNode *n, struct status *status,
struct css_style *style);
static struct result box_applet(xmlNode *n, struct status *status,
struct css_style *style);
static struct form* create_form(xmlNode* n);
static void add_form_element(struct page_elements* pe, struct form* f);
static void add_gadget_element(struct page_elements* pe, struct gui_gadget* g);
@ -93,9 +93,12 @@ struct element_entry {
};
static const struct element_entry element_table[] = {
{"a", box_a},
// {"applet", box_applet},
{"embed", box_embed},
{"form", box_form},
{"img", box_image},
{"input", box_input},
{"object", box_object},
{"select", box_select},
{"textarea", box_textarea}
};
@ -1385,48 +1388,33 @@ void add_gadget_element(struct page_elements* pe, struct gui_gadget* g)
/**
* add an object to the box tree
*/
/* } else if (strcmp((const char*) n->name, "object") == 0) { LOG(("object"));
box = box_object(n, content, style, href);
*/ /* TODO - param data structure
for (c = n->children; c != 0; c = c->next) {
if (strcmp((const char*) c->name, "param") == 0) {
LOG(("param"));
current_param = box_param(c, style, current_object);
}
} */
/*
} else if (strcmp((const char*) n->name, "embed") == 0) { LOG(("embed"));
box = box_embed(n, content, style, href);
} else if (strcmp((const char*) n->name, "applet") == 0) { LOG(("applet"));
box = box_applet(n, content, style, href);
}
*/
struct box* box_object(xmlNode *n, struct content *content,
struct css_style *style, char *href)
struct result box_object(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct plugin_object *po;
char *s, *url;
xmlChar *s2;
box = box_create(style, href, 0);
box = box_create(style, status->href, 0);
po = xcalloc(1,sizeof(*po));
po = xcalloc(1, sizeof(*po));
/* object data */
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->paramds = 0;
po->width = 0;
po->height = 0;
/* object data */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "data"))) {
po->data = strdup(s);
url = url_join(strdup(s), content->url);
LOG(("object '%s'", url));
url = url_join(strdup(s), status->content->url);
LOG(("object '%s'", po->data));
xmlFree(s);
}
@ -1434,7 +1422,7 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "type"))) {
po->type = strdup(s);
LOG(("type: %s", po->type));
LOG(("type: %s", s));
xmlFree(s);
}
@ -1442,7 +1430,7 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "codetype"))) {
po->codetype = strdup(s);
LOG(("codetype: %s", po->codetype));
LOG(("codetype: %s", s));
xmlFree(s);
}
@ -1450,7 +1438,7 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "codebase"))) {
po->codebase = strdup(s);
LOG(("codebase: %s", po->codebase));
LOG(("codebase: %s", s));
xmlFree(s);
}
@ -1458,7 +1446,7 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "classid"))) {
po->classid = strdup(s);
LOG(("classid: %s", po->classid));
LOG(("classid: %s", s));
xmlFree(s);
}
@ -1466,7 +1454,7 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "width"))) {
po->width = (unsigned int)atoi(s);
LOG(("width: %u", po->width));
LOG(("width: %u", (unsigned int)atoi(s)));
xmlFree(s);
}
@ -1474,45 +1462,54 @@ struct box* box_object(xmlNode *n, struct content *content,
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "height"))) {
po->height = (unsigned int)atoi(s);
LOG(("height: %u", po->height));
LOG(("height: %u", (unsigned int)atoi(s)));
xmlFree(s);
}
/* start fetch */
plugin_decode(content, url, box, po);
plugin_decode(status->content, url, box, po);
return box;
return (struct result) {box, 0};
}
/**
* add an embed to the box tree
*/
struct box* box_embed(xmlNode *n, struct content *content,
struct css_style *style, char *href)
struct result box_embed(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct plugin_object *po;
char *s, *url;
xmlChar *s2;
box = box_create(style, href, 0);
box = box_create(style, status->href, 0);
po = xcalloc(1, sizeof(*po));
/* initialise po struct */
po->data = 0;
po->type = 0;
po->codetype = 0;
po->codebase = 0;
po->classid = 0;
po->paramds = 0;
po->width = 0;
po->height = 0;
/* embed src */
if ((s = (char *) xmlGetProp(n, (const xmlChar *) "src"))) {
po->data = strdup(s);
url = url_join(strdup(s), content->url);
url = url_join(strdup(s), status->content->url);
LOG(("embed '%s'", url));
xmlFree(s);
}
/* start fetch */
plugin_decode(content, url, box, po);
plugin_decode(status->content, url, box, po);
return box;
return (struct result) {box,0};
}
/**
@ -1520,29 +1517,24 @@ struct box* box_embed(xmlNode *n, struct content *content,
* add an applet to the box tree
*/
struct box* box_applet(xmlNode *n, struct content *content,
struct css_style *style, char *href)
struct result box_applet(xmlNode *n, struct status *status,
struct css_style *style)
{
struct box *box;
struct plugin_object *po;
char *s, *url;
xmlChar *s2;
/* box type is decided by caller, BOX_INLINE is just a default */
box = box_create(style, href, 0);
po = xcalloc(1,sizeof(struct plugin_object));
box = box_create(style, status->href, 0);
/* object without data is an error */
if (!(s = (char *) xmlGetProp(n, (const xmlChar *) "data")))
return box;
return (struct result) {box,0};
url = url_join(strdup(s), content->url);
url = url_join(strdup(s), status->content->url);
LOG(("object '%s'", url));
xmlFree(s);
/* start fetch */
//plugin_decode(content, url, box, po);
return box;
return (struct result) {box,0};
}

6
render/html.c
View File

@ -176,7 +176,7 @@ void html_convert_css_callback(content_msg msg, struct content *css,
c, i, css->width, css->height);
if (c->data.html.stylesheet_content[i]->status != CONTENT_STATUS_DONE)
c->active++;
break;
break;
default:
assert(0);
@ -305,7 +305,7 @@ void html_find_stylesheets(struct content *c, xmlNode *head)
LOG(("style element"));
if (c->data.html.stylesheet_content[1] == 0) {
c->data.html.stylesheet_content[1] = content_create(c->url);
content_set_type(c->data.html.stylesheet_content[1], CONTENT_CSS);
content_set_type(c->data.html.stylesheet_content[1], CONTENT_CSS, "text/css");
}
/* can't just use xmlNodeGetContent(node), because that won't give
@ -450,7 +450,7 @@ void html_object_callback(content_msg msg, struct content *object,
c, i, 0, 0);
if (c->data.html.object[i].content->status != CONTENT_STATUS_DONE)
c->active++;
break;
break;
default:
assert(0);

475
riscos/plugin.c
View File

@ -19,268 +19,275 @@
#include "oslib/mimemap.h"
char* create_mime_from_ext(char* data);
char* create_sysvar(char* mime);
void plugin_fetch(struct plugin_object* po,
char* alias_sysvar/* vars here */);
bool plugin_handleable(struct content* c);
/**
* plugin_decode
* Processes the contents of the plugin_object struct (defined in plugin.h)
* in order to work out if NetSurf can handle the object.
* For more information, read
* http://www.ecs.soton.ac.uk/~jmb202/riscos/acorn/browse-plugins.html
* as this code is based heavily on that description.
* This function checks that the contents of the plugin_object struct
* are valid. If they are, it initiates the fetch process. If they are
* not, it exits, leaving the box structure as it was on entry. This is
* necessary as there are multiple ways of declaring an object's attributes.
*
* TODO: alt html
* params - create parameters file and put the filename string
* somewhere such that it is accessible from plugin_create.
*/
void plugin_decode(struct content* content, char* url, struct box* box,
struct plugin_object* po) {
struct plugin_object* po)
{
os_error *e;
unsigned int *fv;
/* Check if the codebase attribute is defined.
* If it is not, set it to the codebase of the current document.
*/
if(po->codebase == 0)
po->codebase = strdup(content->url);
else
po->codebase = url_join(po->codebase, content->url);
content_type mime_type;
bool can_handle = TRUE;
char* alias_sysvar;
/* Check that we have some data specified.
* First, check the data attribute.
* Second, check the classid attribute.
* The data attribute takes precedence.
* If neither are specified or if classid begins "clsid:",
* we can't handle this object.
*/
if(po->data == 0 && po->classid == 0) {
xfree(po);
return;
}
if(po->data == 0 && po->classid != 0) {
if(strnicmp(po->classid, "clsid:", 6) == 0) {
LOG(("ActiveX object - n0"));
xfree(po);
return;
}
else {
url = url_join(po->classid, po->codebase);
}
}
else {
url = url_join(po->data, po->codebase);
}
/* Check if the declared mime type is understandable.
* ie. is it referenced in the mimemap file?
* Checks type and codetype attributes.
*/
if(po->type != 0) {
e = xmimemaptranslate_mime_type_to_filetype((const char*)po->type,
(unsigned int*)&fv);
LOG(("fv: &%x", (int) fv));
if(e != NULL) {
xfree(po);
return;
}
/* If a filetype of &ffd (Data) is returned,
* one of the following mime types is possible :
* application/octet-stream
* multipart/x-mixed-replace
* unknown mime type (* / *)
* we assume it to be the last one as the other two
* are unlikely to occur in an <object> definition.
*/
if((int)fv == 0xffd) {
xfree(po);
return;
}
/* TODO: implement GUI for iframes/frames
* For now, we just discard the data and
* render the alternative html
*/
if((int)fv == 0xfaf) {
xfree(po);
return;
}
}
if(po->codetype != 0) {
e = xmimemaptranslate_mime_type_to_filetype((const char*)po->codetype,
(unsigned int*)&fv);
if(e != NULL) {
xfree(po);
return;
}
/* If a filetype of &ffd (Data) is returned,
* one of the following mime types is possible :
* application/octet-stream
* multipart/x-mixed-replace
* unknown mime type (* / *)
* we assume it to be the last one as the other two
* are unlikely to occur in an <object> definition.
*/
if((int)fv == 0xffd) {
xfree(po);
return;
}
/* TODO: implement GUI for iframes/frames
* For now, we just discard the data and
* render the alternative html
*/
if((int)fv == 0xfaf) {
xfree(po);
return;
}
}
if (po->data != NULL) {
if (po->type != NULL) {
/* acquire NS mime type from actual mime type */
mime_type = content_lookup((const char*)po->type);
}
else {
/* create actual mime type - if we're wrong,
* it doesn't matter as the HTTP content-type
* header should override whatever we think.
* however, checking the header hasn't been
* implemented yet so it will just b0rk :(
*/
po->type = strdup(create_mime_from_ext(po->data));
if (po->type != NULL)
mime_type = content_lookup((const char*)po->type);
else {
/* failed to create mime type, clean up and exit */
xfree(po);
can_handle = FALSE;
}
}
}
else {
/* no data so try using classid instead */
if (po->classid != NULL) {
po->data = strdup(po->classid);
if (strnicmp(po->data,"clsid:",6) == 0) {
/* We can't handle ActiveX objects */
LOG(("Can't Handle ActiveX"));
xfree(po);
can_handle = FALSE;
}
else {
if (po->codetype != NULL) {
/* use codetype instead of type if we can */
po->type = strdup(po->codetype);
mime_type = content_lookup(
(const char*)po->codetype);
}
else {
/* try ye olde file extension munging */
po->codetype = strdup(
create_mime_from_ext(po->data));
if (po->codetype != NULL) {
/* well, it appeared to work... */
mime_type = content_lookup(
(const char*)po->codetype);
po->type = strdup(
po->codetype);
}
else {
/* arse, failed. oh well */
xfree(po);
can_handle = FALSE;
}
}
}
}
else {
/* we don't have sufficient data to handle this
* object :(
* TODO: start fetch anyway and check header.
* if we can handle the content, continue
* fetch and carry on as if the proper HTML
* was written.
* if we can't handle the content, stop fetch
* and clean up.
*/
xfree(po);
can_handle = FALSE;
}
}
/* so, you think you can handle it do you? */
if (can_handle == TRUE) {
/* We think we can handle this object. Now check that
* we can.
* 1) Is it an image? Yes - send to image handler
* No - continue checking
* 2) Is a suitable Alias$... System Variable set?
* Yes - invoke plugin
* No - we can't handle it. Display alternative HTML
*/
/* TODO: There must be a better way than this...
* Perhaps checking if the mime type begins "image/"
* would be better?
*/
if (mime_type == CONTENT_JPEG || mime_type == CONTENT_PNG
|| mime_type == CONTENT_GIF) {
/* OK, we have an image. Let's make the image handler
* deal with it.
*/
xfree(po);
LOG(("sending data to image handler"));
html_fetch_object(content, url, box);
return;
}
else { /* not an image; is sys var set? */
/* Create Alias variable */
alias_sysvar = create_sysvar(po->type);
if (alias_sysvar == NULL) {
/* oh dear, you can't handle it */
xfree(po);
xfree(alias_sysvar);
can_handle = FALSE;
}
else {
/* Right, we have a variable.
* Does it actually exist?
*/
int used;
xos_read_var_val_size(
(const char*)alias_sysvar,
0, os_VARTYPE_STRING,
&used, 0, os_VARTYPE_STRING);
if (used == 0) {
/* no, doesn't exist */
xfree(po);
xfree(alias_sysvar);
can_handle = FALSE;
}
else {
/* yes, it exists */
LOG(("%s exists", alias_sysvar));
plugin_fetch(po, alias_sysvar/* insert vars here */);
}
}
}
}
if (can_handle == FALSE) {
/* Get alternative HTML as we can't handle the object */
return;
}
/* If we've got to here, the object declaration has provided us with
* enough data to enable us to have a go at downloading and displaying it.
*/
xfree(po);
html_fetch_object(content, url, box);
}
/**
* create_mime_from_ext
* attempts to create a mime type from the filename extension.
* returns NULL if it fails.
* plugin_create
* initialises plugin system in readiness for recieving object data
*
* TODO: implement aborting the fetch
* get parameter filename from wherever it was put by plugin_decode
* launch plugin system
*/
void plugin_create(struct content *c)
{
bool can_handle = TRUE; /* we assume we can handle all types */
char* create_mime_from_ext(char* data){
LOG(("mime type: %s", c->mime_type));
char* ret;
os_error *e;
/* check if we can handle this type */
can_handle = plugin_handleable(c);
LOG(("can_handle = %s", can_handle ? "TRUE" : "FALSE"));
LOG(("sysvar: %s", can_handle ? c->data.plugin.sysvar : "not set"));
LOG(("Creating Mime Type from File Extension"));
if(!can_handle) {
/* TODO: need to find a way of stopping the fetch
* if we can't handle this type
*/
}
ret = xcalloc(90, sizeof(char));
ret = strrchr(data, '.');
LOG(("Extension = %s", ret));
/* ok, it looks like we can handle this object.
* Broadcast Message_PlugIn_Open (&4D540) and listen for response
* Message_PlugIn_Opening (&4D541). If no response, try to launch
* plugin by Wimp_StartTask(sysvar). Then re-broadcast Message_PlugIn_Open
* and listen for response. If there is still no response, give up and set
* can_handle to FALSE.
* NB: For the bounding box in Message_PlugIn_Open, we choose arbitrary
* values outside the area displayed. This is corrected when
* plugin_redraw is called.
*/
/* Let's make the mime map module do the work for us */
e = xmimemaptranslate_extension_to_mime_type((const char*)ret,
ret);
LOG(("Mime Type = %s", ret));
if (e != NULL) ret = NULL;
return ret;
/* Recheck if can_handle is false. If it is, stop fetch and exit .*/
if(!can_handle) {
/* TODO: need to find a way of stopping the fetch
* if we can't handle this type
*/
}
}
static const char * const ALIAS_PREFIX = "Alias$@PlugInType_";
/**
* plugin_handleable
* Tests whether we can handle an object using a browser plugin
* returns TRUE if we can handle it, FALSE if we can't.
*/
bool plugin_handleable(struct content* c)
{
bool ret = TRUE;
char *sysvar;
unsigned int *fv;
int used;
os_error *e;
/* prefix + 3 for file type + 1 for terminating \0 */
sysvar = xcalloc(strlen(ALIAS_PREFIX)+4, sizeof(char));
e = xmimemaptranslate_mime_type_to_filetype((const char*)c->mime_type,
(unsigned int*)&fv);
sprintf(sysvar, "%s%x", ALIAS_PREFIX, e == NULL ? (int)fv : 0 );
xos_read_var_val_size((const char*)sysvar,0, os_VARTYPE_STRING,
&used, 0, os_VARTYPE_STRING);
if(used == 0)
/* No system variable set => no plugin available */
ret = FALSE;
if(ret)
c->data.plugin.sysvar = strdup(sysvar);
xfree(sysvar);
return ret;
}
/**
* create_sysvar
* attempts to create a system variable of the form Alias$@PlugInType_XXX
* where XXX is the filetype.
* returns NULL if unsuccessful.
* plugin_process_data
* processes data retrieved by the fetch process
*
* TODO: plugin stream protocol
*
*/
void plugin_process_data(struct content *c, char *data, unsigned long size)
{
char* create_sysvar(char* mime) {
/* If the plugin requests, we send the data to it via the
* plugin stream protocol.
* Also, we should listen for Message_PlugIn_URL_Access (&4D54D)
* as the plugin may need us to retrieve URLs for it.
* We should also listen for Message_PlugIn_Closed (&4D543).
* If this occurs, the plugin has exited with an error.
* Therefore, we need to stop the fetch and exit.
*/
char* ret;
char* ft;
unsigned int* fv;
os_error *e;
LOG(("Creating System Variable from Mime Type"));
ret = xcalloc(22, sizeof(char));
ft = xcalloc(10, sizeof(char));
strcpy(ret, "Alias$@PlugInType_");
LOG(("Mime Type: %s", mime));
e = xmimemaptranslate_mime_type_to_filetype((const char*)mime,
(unsigned int*)&fv);
if (e != NULL) ret = NULL;
else {
sprintf(ft, "%x", (int)fv);
strcat(ret, ft);
LOG(("Alias Var: %s", ret));
}
xfree(ft);
return ret;
}
/**
* plugin_fetch
* attempts to negotiate with the plugin.
* also fetches the object for the plugin to handle.
* plugin_convert
* This isn't needed by the plugin system as all the data processing is done
* externally. Therefore, just tell NetSurf that everything's OK.
*/
void plugin_fetch (struct plugin_object* po,
char* alias_sysvar/* insert vars here */) {
LOG(("Entering plugin_fetch"));
xfree(po);
xfree(alias_sysvar);
return;
int plugin_convert(struct content *c, unsigned int width, unsigned int height)
{
c->status=CONTENT_STATUS_DONE;
return 0;
}
void plugin_revive(struct content *c, unsigned int width, unsigned int height)
{
}
void plugin_reformat(struct content *c, unsigned int width, unsigned int height)
{
}
/**
* plugin_destroy
* we've finished with this data, destroy it. Also, shutdown plugin.
*
* TODO: clean up
*/
void plugin_destroy(struct content *c)
{
}
/**
* plugin_redraw
* redraw plugin on page.
*
* TODO: Message_PlugIn_Reshape
*/
void plugin_redraw(struct content *c, long x, long y,
unsigned long width, unsigned long height)
{
/* By now, we've got the plugin up and running in a nested window
* off the viewable page area. Now we want to display it in its place.
* Therefore, broadcast a Message_PlugIn_Reshape (&4D544) with the values
* given to us.
*/
}

12
riscos/plugin.h
View File

@ -8,6 +8,8 @@
#ifndef _NETSURF_RISCOS_PLUGIN_H_
#define _NETSURF_RISCOS_PLUGIN_H_
#include "netsurf/content/content.h"
struct plugin_object {
char* data;
@ -21,8 +23,16 @@ struct plugin_object {
};
/* function definitions */
void plugin_decode(struct content* content, char* url, struct box* box,
struct plugin_object* po);
void plugin_create(struct content *c);
void plugin_process_data(struct content *c, char *data, unsigned long size);
int plugin_convert(struct content *c, unsigned int width, unsigned int height);
void plugin_revive(struct content *c, unsigned int width, unsigned int height);
void plugin_reformat(struct content *c, unsigned int width, unsigned int height);
void plugin_destroy(struct content *c);
void plugin_redraw(struct content *c, long x, long y,
unsigned long width, unsigned long height);
#endif