move html and text content handlers where they belong

1 files changed, 0 insertions, 801 deletions

diff --git a/render/imagemap.c b/render/imagemap.c
deleted file mode 100644
index 0d3b42a1b..000000000
--- a/render/imagemap.c
+++ /dev/null
@@ -1,801 +0,0 @@
-/*
- * Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * Much of this shamelessly copied from utils/messages.c
- */
-
-#include <assert.h>
-#include <stdbool.h>
-#include <string.h>
-#include <strings.h>
-
-#include <dom/dom.h>
-
-#include "utils/log.h"
-#include "utils/corestrings.h"
-#include "content/content_protected.h"
-#include "content/hlcache.h"
-
-#include "render/box.h"
-#include "render/html_internal.h"
-#include "render/imagemap.h"
-
-#define HASH_SIZE 31 /* fixed size hash table */
-
-typedef enum {
-	IMAGEMAP_DEFAULT,
-	IMAGEMAP_RECT,
-	IMAGEMAP_CIRCLE,
-	IMAGEMAP_POLY
-} imagemap_entry_type;
-
-struct mapentry {
-	imagemap_entry_type type;	/**< type of shape */
-	nsurl *url;			/**< absolute url to go to */
-	char *target;			/**< target frame (if any) */
-	union {
-		struct {
-			int x;		/**< x coordinate of centre */
-			int y;		/**< y coordinate of center */
-			int r;		/**< radius of circle */
-		} circle;
-		struct {
-			int x0;		/**< left hand edge */
-			int y0;		/**< top edge */
-			int x1;		/**< right hand edge */
-			int y1;		/**< bottom edge */
-		} rect;
-		struct {
-			int num;	/**< number of points */
-			float *xcoords;	/**< x coordinates */
-			float *ycoords;	/**< y coordinates */
-		} poly;
-	} bounds;
-	struct mapentry *next;		/**< next entry in list */
-};
-
-struct imagemap {
-	char *key;		/**< key for this entry */
-	struct mapentry *list;	/**< pointer to linked list of entries */
-	struct imagemap *next;	/**< next entry in this hash chain */
-};
-
-/**
- * Create hashtable of imagemaps
- *
- * \param c The containing content
- * \return true on success, false otherwise
- */
-static bool imagemap_create(html_content *c)
-{
-	assert(c != NULL);
-
-	if (c->imagemaps == NULL) {
-		c->imagemaps = calloc(HASH_SIZE, sizeof(struct imagemap *));
-		if (c->imagemaps == NULL) {
-			return false;
-		}
-	}
-
-	return true;
-}
-
-/**
- * Hash function.
- *
- * \param key The key to hash.
- * \return The hashed value.
- */
-static unsigned int imagemap_hash(const char *key)
-{
-	unsigned int z = 0;
-
-	if (key == 0) return 0;
-
-	for (; *key != 0; key++) {
-		z += *key & 0x1f;
-	}
-
-	return (z % (HASH_SIZE - 1)) + 1;
-}
-
-/**
- * Add an imagemap to the hashtable, creating it if it doesn't exist
- *
- * \param c The containing content
- * \param key The name of the imagemap
- * \param list List of map regions
- * \return true on succes, false otherwise
- */
-static bool
-imagemap_add(html_content *c, dom_string *key, struct mapentry *list)
-{
-	struct imagemap *map;
-	unsigned int slot;
-
-	assert(c != NULL);
-	assert(key != NULL);
-	assert(list != NULL);
-
-	if (imagemap_create(c) == false)
-		return false;
-
-	map = calloc(1, sizeof(*map));
-	if (map == NULL)
-		return false;
-
-	/* \todo Stop relying on NULL termination of dom_string */
-	map->key = strdup(dom_string_data(key));
-	if (map->key == NULL) {
-		free(map);
-		return false;
-	}
-
-	map->list = list;
-
-	slot = imagemap_hash(map->key);
-
-	map->next = c->imagemaps[slot];
-	c->imagemaps[slot] = map;
-
-	return true;
-}
-
-/**
- * Free list of imagemap entries
- *
- * \param list Pointer to head of list
- */
-static void imagemap_freelist(struct mapentry *list)
-{
-	struct mapentry *entry, *prev;
-
-	assert(list != NULL);
-
-	entry = list;
-
-	while (entry != NULL) {
-		prev = entry;
-
-		nsurl_unref(entry->url);
-
-		if (entry->target)
-			free(entry->target);
-
-		if (entry->type == IMAGEMAP_POLY) {
-			free(entry->bounds.poly.xcoords);
-			free(entry->bounds.poly.ycoords);
-		}
-
-		entry = entry->next;
-		free(prev);
-	}
-}
-
-/**
- * Destroy hashtable of imagemaps
- *
- * \param c The containing content
- */
-void imagemap_destroy(html_content *c)
-{
-	unsigned int i;
-
-	assert(c != NULL);
-
-	/* no imagemaps -> return */
-	if (c->imagemaps == NULL)
-		return;
-
-	for (i = 0; i != HASH_SIZE; i++) {
-		struct imagemap *map, *next;
-
-		map = c->imagemaps[i];
-		while (map != NULL) {
-			next = map->next;
-			imagemap_freelist(map->list);
-			free(map->key);
-			free(map);
-			map = next;
-		}
-	}
-
-	free(c->imagemaps);
-}
-
-/**
- * Dump imagemap data to the log
- *
- * \param c The containing content
- */
-void imagemap_dump(html_content *c)
-{
-	unsigned int i;
-
-	int j;
-
-	assert(c != NULL);
-
-	if (c->imagemaps == NULL)
-		return;
-
-	for (i = 0; i != HASH_SIZE; i++) {
-		struct imagemap *map;
-		struct mapentry *entry;
-
-		map = c->imagemaps[i];
-		while (map != NULL) {
-			NSLOG(netsurf, INFO, "Imagemap: %s", map->key);
-
-			for (entry = map->list; entry; entry = entry->next) {
-				switch (entry->type) {
-				case IMAGEMAP_DEFAULT:
-					NSLOG(netsurf, INFO, "\tDefault: %s",
-					      nsurl_access(entry->url));
-					break;
-				case IMAGEMAP_RECT:
-					NSLOG(netsurf, INFO,
-					      "\tRectangle: %s: [(%d,%d),(%d,%d)]",
-					      nsurl_access(entry->url),
-					      entry->bounds.rect.x0,
-					      entry->bounds.rect.y0,
-					      entry->bounds.rect.x1,
-					      entry->bounds.rect.y1);
-					break;
-				case IMAGEMAP_CIRCLE:
-					NSLOG(netsurf, INFO,
-					      "\tCircle: %s: [(%d,%d),%d]",
-					      nsurl_access(entry->url),
-					      entry->bounds.circle.x,
-					      entry->bounds.circle.y,
-					      entry->bounds.circle.r);
-					break;
-				case IMAGEMAP_POLY:
-					NSLOG(netsurf, INFO,
-					      "\tPolygon: %s:",
-					      nsurl_access(entry->url));
-					for (j = 0; j != entry->bounds.poly.num;
-							j++) {
-						fprintf(stderr, "(%d,%d) ",
-							(int)entry->bounds.poly.xcoords[j],
-							(int)entry->bounds.poly.ycoords[j]);
-					}
-					fprintf(stderr,"\n");
-					break;
-				}
-			}
-			map = map->next;
-		}
-	}
-}
-
-/**
- * Adds an imagemap entry to the list
- *
- * \param c  The html content that the imagemap belongs to
- * \param n  The xmlNode representing the entry to add
- * \param base_url  Base URL for resolving relative URLs
- * \param entry  Pointer to list of entries
- * \param tagtype  The type of tag
- * \return false on memory exhaustion, true otherwise
- */
-static bool
-imagemap_addtolist(const struct html_content *c, dom_node *n, nsurl *base_url,
-		   struct mapentry **entry, dom_string *tagtype)
-{
-	dom_exception exc;
-	dom_string *href = NULL, *target = NULL, *shape = NULL;
-	dom_string *coords = NULL;
-	struct mapentry *new_map, *temp;
-	bool ret = true;
-
-	if (dom_string_caseless_isequal(tagtype, corestring_dom_area)) {
-		bool nohref = false;
-		exc = dom_element_has_attribute(n,
-				corestring_dom_nohref, &nohref);
-		if ((exc != DOM_NO_ERR) || nohref)
-			/* Skip <area nohref="anything" /> */
-			goto ok_out;
-	}
-
-	exc = dom_element_get_attribute(n, corestring_dom_href, &href);
-	if (exc != DOM_NO_ERR || href == NULL) {
-		/* No href="" attribute, skip this element */
-		goto ok_out;
-	}
-
-	exc = dom_element_get_attribute(n, corestring_dom_target, &target);
-	if (exc != DOM_NO_ERR) {
-		goto ok_out;
-	}
-
-	exc = dom_element_get_attribute(n, corestring_dom_shape, &shape);
-	if (exc != DOM_NO_ERR) {
-		goto ok_out;
-	}
-
-	/* If there's no shape, we default to rectangles */
-	if (shape == NULL)
-		shape = dom_string_ref(corestring_dom_rect);
-
-	if (!dom_string_caseless_lwc_isequal(shape, corestring_lwc_default)) {
-		/* If not 'default' and there's no 'coords' give up */
-		exc = dom_element_get_attribute(n, corestring_dom_coords,
-						&coords);
-		if (exc != DOM_NO_ERR || coords == NULL) {
-			goto ok_out;
-		}
-	}
-
-	new_map = calloc(1, sizeof(*new_map));
-	if (new_map == NULL) {
-		goto bad_out;
-	}
-
-	if (dom_string_caseless_lwc_isequal(shape, corestring_lwc_rect) ||
-	    dom_string_caseless_lwc_isequal(shape, corestring_lwc_rectangle))
-		new_map->type = IMAGEMAP_RECT;
-	else if (dom_string_caseless_lwc_isequal(shape, corestring_lwc_circle))
-		new_map->type = IMAGEMAP_CIRCLE;
-	else if (dom_string_caseless_lwc_isequal(shape, corestring_lwc_poly) ||
-		 dom_string_caseless_lwc_isequal(shape, corestring_lwc_polygon))
-		new_map->type = IMAGEMAP_POLY;
-	else if (dom_string_caseless_lwc_isequal(shape, corestring_lwc_default))
-		new_map->type = IMAGEMAP_DEFAULT;
-	else
-		goto bad_out;
-
-	if (box_extract_link(c, href, base_url, &new_map->url) == false)
-		goto bad_out;
-
-	if (new_map->url == NULL) {
-		/* non-fatal error -> ignore this */
-		goto ok_free_map_out;
-	}
-
-	if (target != NULL) {
-		/* Copy target into the map */
-		new_map->target = malloc(dom_string_byte_length(target) + 1);
-		if (new_map->target == NULL)
-			goto bad_out;
-		/* Safe, but relies on dom_strings being NULL terminated */
-		/* \todo Do this better */
-		strcpy(new_map->target, dom_string_data(target));
-	}
-
-	if (new_map->type != IMAGEMAP_DEFAULT) {
-		int x, y;
-		float *xcoords, *ycoords;
-		/* coordinates are a comma-separated list of values */
-		char *val = strtok((char *)dom_string_data(coords), ",");
-		int num = 1;
-
-		switch (new_map->type) {
-		case IMAGEMAP_RECT:
-			/* (left, top, right, bottom) */
-			while (val != NULL && num <= 4) {
-				switch (num) {
-				case 1:
-					new_map->bounds.rect.x0 = atoi(val);
-					break;
-				case 2:
-					new_map->bounds.rect.y0 = atoi(val);
-					break;
-				case 3:
-					new_map->bounds.rect.x1 = atoi(val);
-					break;
-				case 4:
-					new_map->bounds.rect.y1 = atoi(val);
-					break;
-				}
-
-				num++;
-				val = strtok(NULL, ",");
-			}
-			break;
-		case IMAGEMAP_CIRCLE:
-			/* (x, y, radius ) */
-			while (val != NULL && num <= 3) {
-				switch (num) {
-				case 1:
-					new_map->bounds.circle.x = atoi(val);
-					break;
-				case 2:
-					new_map->bounds.circle.y = atoi(val);
-					break;
-				case 3:
-					new_map->bounds.circle.r = atoi(val);
-					break;
-				}
-
-				num++;
-				val = strtok(NULL, ",");
-			}
-			break;
-		case IMAGEMAP_POLY:
-			new_map->bounds.poly.xcoords = NULL;
-			new_map->bounds.poly.ycoords = NULL;
-
-			while (val != NULL) {
-				x = atoi(val);
-
-				val = strtok(NULL, ",");
-				if (val == NULL)
-					break;
-
-				y = atoi(val);
-
-				xcoords = realloc(new_map->bounds.poly.xcoords,
-						num * sizeof(float));
-				if (xcoords == NULL) {
-					goto bad_out;
-				}
-				new_map->bounds.poly.xcoords = xcoords;
-
-				ycoords = realloc(new_map->bounds.poly.ycoords,
-					num * sizeof(float));
-				if (ycoords == NULL) {
-					goto bad_out;
-				}
-				new_map->bounds.poly.ycoords = ycoords;
-
-				new_map->bounds.poly.xcoords[num - 1] = x;
-				new_map->bounds.poly.ycoords[num - 1] = y;
-
-				num++;
-				val = strtok(NULL, ",");
-			}
-
-			new_map->bounds.poly.num = num - 1;
-
-			break;
-		default:
-			break;
-		}
-	}
-
-	new_map->next = NULL;
-
-	if (*entry) {
-		/* add to END of list */
-		for (temp = (*entry); temp->next != NULL; temp = temp->next)
-			;
-		temp->next = new_map;
-	} else {
-		(*entry) = new_map;
-	}
-
-	/* All good, linked in, let's clean up */
-	goto ok_out;
-
-bad_out:
-	ret = false;
-ok_free_map_out:
-	if (new_map != NULL) {
-		if (new_map->url != NULL)
-			nsurl_unref(new_map->url);
-		if (new_map->type == IMAGEMAP_POLY &&
-				new_map->bounds.poly.ycoords != NULL)
-			free(new_map->bounds.poly.ycoords);
-		if (new_map->type == IMAGEMAP_POLY &&
-				new_map->bounds.poly.xcoords != NULL)
-			free(new_map->bounds.poly.xcoords);
-		if (new_map->target != NULL)
-			free(new_map->target);
-
-		free(new_map);
-	}
-ok_out:
-	if (href != NULL)
-		dom_string_unref(href);
-	if (target != NULL)
-		dom_string_unref(target);
-	if (shape != NULL)
-		dom_string_unref(shape);
-	if (coords != NULL)
-		dom_string_unref(coords);
-
-	return ret;
-}
-
-/**
- * Extract an imagemap from html source
- *
- * \param node  XML node containing map
- * \param c     Content containing document
- * \param entry List of map entries
- * \param tname The sub-tags to consider on this pass
- * \return false on memory exhaustion, true otherwise
- */
-static bool
-imagemap_extract_map_entries(dom_node *node, html_content *c,
-			     struct mapentry **entry, dom_string *tname)
-{
-	dom_nodelist *nlist;
-	dom_exception exc;
-	unsigned long ent;
-	uint32_t tag_count;
-
-	exc = dom_element_get_elements_by_tag_name(node, tname, &nlist);
-	if (exc != DOM_NO_ERR) {
-		return false;
-	}
-
-	exc = dom_nodelist_get_length(nlist, &tag_count);
-	if (exc != DOM_NO_ERR) {
-		dom_nodelist_unref(nlist);
-		return false;
-	}
-
-	for (ent = 0; ent < tag_count; ++ent) {
-		dom_node *subnode;
-
-		exc = dom_nodelist_item(nlist, ent, &subnode);
-		if (exc != DOM_NO_ERR) {
-			dom_nodelist_unref(nlist);
-			return false;
-		}
-		if (imagemap_addtolist(c, subnode, c->base_url,
-				       entry, tname) == false) {
-			dom_node_unref(subnode);
-			dom_nodelist_unref(nlist);
-			return false;
-		}
-		dom_node_unref(subnode);
-	}
-
-	dom_nodelist_unref(nlist);
-
-	return true;
-}
-
-/**
- * Extract an imagemap from html source
- *
- * \param node  XML node containing map
- * \param c     Content containing document
- * \param entry List of map entries
- * \return false on memory exhaustion, true otherwise
- */
-static bool imagemap_extract_map(dom_node *node, html_content *c,
-		struct mapentry **entry)
-{
-	if (imagemap_extract_map_entries(node, c, entry,
-			corestring_dom_area) == false)
-		return false;
-	return imagemap_extract_map_entries(node, c, entry,
-			corestring_dom_a);
-}
-
-/**
- * Extract all imagemaps from a document tree
- *
- * \param c The content to extract imagemaps from.
- * \return false on memory exhaustion, true otherwise
- */
-nserror
-imagemap_extract(html_content *c)
-{
-	dom_nodelist *nlist;
-	dom_exception exc;
-	unsigned long mapnr;
-	uint32_t maybe_maps;
-	nserror ret = NSERROR_OK;
-
-	exc = dom_document_get_elements_by_tag_name(c->document,
-						    corestring_dom_map,
-						    &nlist);
-	if (exc != DOM_NO_ERR) {
-		return NSERROR_DOM;
-	}
-
-	exc = dom_nodelist_get_length(nlist, &maybe_maps);
-	if (exc != DOM_NO_ERR) {
-		ret = NSERROR_DOM;
-		goto out_nlist;
-	}
-
-	for (mapnr = 0; mapnr < maybe_maps; ++mapnr) {
-		dom_node *node;
-		dom_string *name;
-		exc = dom_nodelist_item(nlist, mapnr, &node);
-		if (exc != DOM_NO_ERR) {
-			ret = NSERROR_DOM;
-			goto out_nlist;
-		}
-
-		exc = dom_element_get_attribute(node, corestring_dom_id,
-						&name);
-		if (exc != DOM_NO_ERR) {
-			dom_node_unref(node);
-			ret = NSERROR_DOM;
-			goto out_nlist;
-		}
-
-		if (name == NULL) {
-			exc = dom_element_get_attribute(node,
-							corestring_dom_name,
-							&name);
-			if (exc != DOM_NO_ERR) {
-				dom_node_unref(node);
-				ret = NSERROR_DOM;
-				goto out_nlist;
-			}
-		}
-
-		if (name != NULL) {
-			struct mapentry *entry = NULL;
-			if (imagemap_extract_map(node, c, &entry) == false) {
-				if (entry != NULL) {
-					imagemap_freelist(entry);
-				}
-
-				dom_string_unref(name);
-				dom_node_unref(node);
-				ret = NSERROR_NOMEM; /** @todo check this */
-				goto out_nlist;
-			}
-
-			/* imagemap_extract_map may not extract anything,
-			 * so entry can still be NULL here. This isn't an
-			 * error as it just means that we've encountered
-			 * an incorrectly defined <map>...</map> block
-			 */
-			if ((entry != NULL) &&
-			    (imagemap_add(c, name, entry) == false)) {
-				imagemap_freelist(entry);
-
-				dom_string_unref(name);
-				dom_node_unref(node);
-				ret = NSERROR_NOMEM; /** @todo check this */
-				goto out_nlist;
-			}
-		}
-
-		dom_string_unref(name);
-		dom_node_unref(node);
-	}
-
-out_nlist:
-
-	dom_nodelist_unref(nlist);
-
-	return ret;
-}
-
-/**
- * Test if a point lies within an arbitrary polygon
- * Modified from comp.graphics.algorithms FAQ 2.03
- *
- * \param num Number of vertices
- * \param xpt Array of x coordinates
- * \param ypt Array of y coordinates
- * \param x Left hand edge of containing box
- * \param y Top edge of containing box
- * \param click_x X coordinate of click
- * \param click_y Y coordinate of click
- * \return 1 if point is in polygon, 0 if outside. 0 or 1 if on boundary
- */
-static int
-imagemap_point_in_poly(int num, float *xpt, float *ypt, unsigned long x,
-		unsigned long y, unsigned long click_x,	unsigned long click_y)
-{
-	int i, j, c = 0;
-
-	assert(xpt != NULL);
-	assert(ypt != NULL);
-
-	for (i = 0, j = num - 1; i < num; j = i++) {
-		if ((((ypt[i] + y <= click_y) && (click_y < ypt[j] + y)) ||
-		     ((ypt[j] + y <= click_y) && (click_y < ypt[i] + y))) &&
-		     (click_x < (xpt[j] - xpt[i]) *
-		     (click_y - (ypt[i] + y)) / (ypt[j] - ypt[i]) + xpt[i] + x))
-			c = !c;
-	}
-
-	return c;
-}
-
-/**
- * Retrieve url associated with imagemap entry
- *
- * \param c        The containing content
- * \param key      The map name to search for
- * \param x        The left edge of the containing box
- * \param y        The top edge of the containing box
- * \param click_x  The horizontal location of the click
- * \param click_y  The vertical location of the click
- * \param target   Pointer to location to receive target pointer (if any)
- * \return The url associated with this area, or NULL if not found
- */
-nsurl *imagemap_get(struct html_content *c, const char *key,
-		unsigned long x, unsigned long y,
-		unsigned long click_x, unsigned long click_y,
-		const char **target)
-{
-	unsigned int slot = 0;
-	struct imagemap *map;
-	struct mapentry *entry;
-	unsigned long cx, cy;
-
-	assert(c != NULL);
-
-	if (key == NULL)
-		return NULL;
-
-	if (c->imagemaps == NULL)
-		return NULL;
-
-	slot = imagemap_hash(key);
-
-	for (map = c->imagemaps[slot]; map != NULL; map = map->next) {
-		if (map->key != NULL && strcasecmp(map->key, key) == 0)
-			break;
-	}
-
-	if (map == NULL || map->list == NULL)
-		return NULL;
-
-	for (entry = map->list; entry; entry = entry->next) {
-		switch (entry->type) {
-		case IMAGEMAP_DEFAULT:
-			/* just return the URL. no checks required */
-			if (target)
-				*target = entry->target;
-			return entry->url;
-			break;
-		case IMAGEMAP_RECT:
-			if (click_x >= x + entry->bounds.rect.x0 &&
-				    click_x <= x + entry->bounds.rect.x1 &&
-				    click_y >= y + entry->bounds.rect.y0 &&
-				    click_y <= y + entry->bounds.rect.y1) {
-				if (target)
-					*target = entry->target;
-				return entry->url;
-			}
-			break;
-		case IMAGEMAP_CIRCLE:
-			cx = x + entry->bounds.circle.x - click_x;
-			cy = y + entry->bounds.circle.y - click_y;
-			if ((cx * cx + cy * cy) <=
-				(unsigned long) (entry->bounds.circle.r *
-					entry->bounds.circle.r)) {
-				if (target)
-					*target = entry->target;
-				return entry->url;
-			}
-			break;
-		case IMAGEMAP_POLY:
-			if (imagemap_point_in_poly(entry->bounds.poly.num,
-					entry->bounds.poly.xcoords,
-					entry->bounds.poly.ycoords, x, y,
-					click_x, click_y)) {
-				if (target)
-					*target = entry->target;
-				return entry->url;
-			}
-			break;
-		}
-	}
-
-	if (target)
-		*target = NULL;
-
-	return NULL;
-}