Surfer
/* $Id$ */
/* Copyright (c) 2008-2016 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Surfer */
/* This program 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 3 of the License.
*
* This program 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/>. */
/* TODO:
* - implement backwards text search */
#include <stdlib.h>
#include <errno.h>
#include <libintl.h>
#include <System/Parser/XML.h>
#include "ghtml.h"
#include "../config.h"
#include "common/conn.c"
#include "common/history.c"
#include "common/url.c"
#define _(string) gettext(string)
/* private */
/* types */
typedef enum _GHtmlDisplay
{
GHTML_DISPLAY_BLOCK,
GHTML_DISPLAY_INLINE
} GHtmlDisplay;
typedef struct _GHtmlEntity
{
char const * name;
char const * string;
} GHtmlEntity;
typedef enum _GHtmlPosition
{
GHTML_POSITION_BEFORE = 0,
GHTML_POSITION_HEAD,
GHTML_POSITION_HEAD_TITLE,
GHTML_POSITION_BODY,
GHTML_POSITION_AFTER
} GHtmlPosition;
typedef struct _GHtmlProperty
{
char const * name;
void * value;
} GHtmlProperty;
typedef struct _GHtmlTag
{
char const * name;
GHtmlDisplay display;
GHtmlProperty const * properties;
GtkTextTag * tag;
} GHtmlTag;
#define GHTML_TAGS_COUNT 24
typedef struct _GHtml
{
Surfer * surfer;
char * title;
char * base;
/* history */
GList * history;
GList * current;
/* search */
size_t search;
/* connection */
Conn * conn;
char * buffer;
size_t buffer_cnt;
/* html widget */
GtkWidget * view;
GtkTextBuffer * tbuffer;
GtkTextTag * zoom;
GHtmlTag tags[GHTML_TAGS_COUNT];
GtkTextTag * tag;
/* parsing */
GHtmlPosition position;
} GHtml;
/* constants */
/* entities */
static const GHtmlEntity _ghtml_entities[] =
{
{ "Aacute", "Á" },
{ "Agrave", "À" },
{ "aacute", "á" },
{ "acute", "Ž" },
{ "agrave", "à" },
{ "amp", "&" },
{ "brvbar", "|" },
{ "bull", "#" },
{ "Ccedil", "Ç" },
{ "ccedil", "ç" },
{ "cedil", "ž" },
{ "cent", "¢" },
{ "circ", "^" },
{ "copy", "©" },
{ "deg", "°" },
{ "Eacute", "É" },
{ "Egrave", "È" },
{ "eacute", "é" },
{ "egrave", "è" },
{ "frac12", "1/2" },
{ "frac14", "1/4" },
{ "frac34", "3/4" },
{ "gt", ">" },
{ "iexcl", "¡" },
{ "laquo", "«" },
{ "lt", "<" },
{ "macr", "¯" },
{ "micro", "µ" },
{ "middot", "·" },
{ "nbsp", " " },
{ "para", "¶" },
{ "plusmn", "±" },
{ "pound", "£" },
{ "iquest", "¿" },
{ "quot", "\"" },
{ "raquo", "»" },
{ "reg", "®" },
{ "sect", "§" },
{ "sup1", "¹" },
{ "sup2", "²" },
{ "sup3", "³" },
{ "tilde", "~" },
{ "times", "×" },
{ "uml", "š" },
{ "yen", "¥" }
};
#define GHTML_ENTITIES_COUNT (sizeof(_ghtml_entities) \
/ sizeof(*_ghtml_entities))
/* properties */
static const GHtmlProperty _ghtml_properties_a[] =
{
{ "foreground", "blue" },
{ "underline", (void*)PANGO_UNDERLINE_SINGLE },
{ "underline-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_b[] =
{
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_del[] =
{
{ "strikethrough", (void*)TRUE },
{ "strikethrough-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h1[] =
{
{ "font", "Sans 16" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h2[] =
{
{ "font", "Sans 14" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h3[] =
{
{ "font", "Sans 13" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h4[] =
{
{ "font", "Sans 12" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h5[] =
{
{ "font", "Sans 11" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_h6[] =
{
{ "font", "Sans 10" },
{ "weight", (void*)PANGO_WEIGHT_BOLD },
{ "weight-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_i[] =
{
{ "style", (void*)PANGO_STYLE_ITALIC },
{ "style-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_pre[] =
{
{ "family", "Monospace" },
{ "wrap-mode", (void*)GTK_WRAP_NONE },
{ "wrap-mode-set", (void*)TRUE },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_tt[] =
{
{ "family", "Monospace" },
{ NULL, NULL }
};
static const GHtmlProperty _ghtml_properties_u[] =
{
{ "underline", (void*)PANGO_UNDERLINE_SINGLE },
{ "underline-set", (void*)TRUE },
{ NULL, NULL }
};
/* tags */
static const GHtmlTag _ghtml_tags[GHTML_TAGS_COUNT] =
{
{ "a", GHTML_DISPLAY_INLINE, _ghtml_properties_a, NULL },
{ "b", GHTML_DISPLAY_INLINE, _ghtml_properties_b, NULL },
{ "del", GHTML_DISPLAY_INLINE, _ghtml_properties_del, NULL },
{ "div", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "em", GHTML_DISPLAY_INLINE, _ghtml_properties_b, NULL },
{ "form", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "h1", GHTML_DISPLAY_BLOCK, _ghtml_properties_h1, NULL },
{ "h2", GHTML_DISPLAY_BLOCK, _ghtml_properties_h2, NULL },
{ "h3", GHTML_DISPLAY_BLOCK, _ghtml_properties_h3, NULL },
{ "h4", GHTML_DISPLAY_BLOCK, _ghtml_properties_h4, NULL },
{ "h5", GHTML_DISPLAY_BLOCK, _ghtml_properties_h5, NULL },
{ "h6", GHTML_DISPLAY_BLOCK, _ghtml_properties_h6, NULL },
{ "hr", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "i", GHTML_DISPLAY_INLINE, _ghtml_properties_i, NULL },
{ "li", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "ol", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "p", GHTML_DISPLAY_BLOCK, NULL, NULL },
{ "pre", GHTML_DISPLAY_BLOCK,_ghtml_properties_pre, NULL },
{ "s", GHTML_DISPLAY_INLINE, _ghtml_properties_del, NULL },
{ "strike", GHTML_DISPLAY_INLINE,_ghtml_properties_del, NULL },
{ "strong", GHTML_DISPLAY_INLINE,_ghtml_properties_b, NULL },
{ "tt", GHTML_DISPLAY_INLINE, _ghtml_properties_tt, NULL },
{ "u", GHTML_DISPLAY_INLINE, _ghtml_properties_u, NULL },
{ "ul", GHTML_DISPLAY_BLOCK, NULL, NULL }
};
/* prototypes */
static int _ghtml_document_load(GHtml * ghtml, char const * url,
char const * post);
static int _ghtml_stop(GHtml * ghtml);
/* callbacks */
static gboolean _on_view_event_after(GtkWidget * widget, GdkEvent * event,
gpointer data);
/* public */
/* functions */
/* ghtml_new */
GtkWidget * ghtml_new(Surfer * surfer)
{
GHtml * ghtml;
GtkWidget * widget;
if((ghtml = malloc(sizeof(*ghtml))) == NULL)
return NULL;
ghtml->surfer = surfer;
ghtml->title = NULL;
ghtml->base = NULL;
ghtml->history = NULL;
ghtml->current = NULL;
ghtml->conn = NULL;
ghtml->buffer = NULL;
ghtml->buffer_cnt = 0;
widget = gtk_scrolled_window_new(NULL, NULL);
g_object_set_data(G_OBJECT(widget), "ghtml", ghtml);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
ghtml->view = gtk_text_view_new();
g_signal_connect(ghtml->view, "event-after", G_CALLBACK(
_on_view_event_after), ghtml);
ghtml->tbuffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(ghtml->view));
ghtml->zoom = gtk_text_buffer_create_tag(ghtml->tbuffer, NULL,
"scale", 1.0, NULL);
memcpy(ghtml->tags, _ghtml_tags, sizeof(_ghtml_tags));
ghtml->tag = NULL;
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(ghtml->view),
FALSE);
gtk_text_view_set_editable(GTK_TEXT_VIEW(ghtml->view), FALSE);
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(ghtml->view),
GTK_WRAP_WORD_CHAR);
gtk_container_add(GTK_CONTAINER(widget), ghtml->view);
return widget;
}
/* ghtml_delete */
void ghtml_delete(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->conn != NULL)
_conn_delete(ghtml->conn);
free(ghtml->title);
free(ghtml->base);
free(ghtml->buffer);
free(ghtml);
}
/* accessors */
/* ghtml_can_go_back */
gboolean ghtml_can_go_back(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return _history_can_go_back(ghtml->current);
}
/* ghtml_can_go_forward */
gboolean ghtml_can_go_forward(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return _history_can_go_forward(ghtml->current);
}
/* ghtml_get_favicon */
GdkPixbuf * ghtml_get_favicon(GtkWidget * widget)
{
/* FIXME implement */
return NULL;
}
/* ghtml_get_link_message */
char const * ghtml_get_link_message(GtkWidget * widget)
{
/* FIXME implement */
return NULL;
}
/* ghtml_get_location */
char const * ghtml_get_location(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return _history_get_location(ghtml->current);
}
/* ghtml_get_progress */
gdouble ghtml_get_progress(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->conn == NULL)
return -1.0;
return _conn_get_progress(ghtml->conn);
}
/* ghtml_get_security */
SurferSecurity ghtml_get_security(GtkWidget * ghtml)
{
/* FIXME implement */
return SS_NONE;
}
/* ghtml_get_source */
char const * ghtml_get_source(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return ghtml->buffer;
}
/* ghtml_get_status */
char const * ghtml_get_status(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->conn == NULL)
return NULL;
return _conn_get_status(ghtml->conn);
}
/* ghtml_get_title */
char const * ghtml_get_title(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
return ghtml->title;
}
/* ghtml_get_zoom */
gdouble ghtml_get_zoom(GtkWidget * widget)
{
GHtml * ghtml;
gdouble zoom = 1.0;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
g_object_get(ghtml->zoom, "scale", &zoom, NULL);
return zoom;
}
/* ghtml_set_enable_javascript */
int ghtml_set_enable_javascript(GtkWidget * widget, gboolean enable)
{
if(enable == FALSE)
return 0;
return -error_set_code(1, "%s", strerror(ENOSYS));
}
/* ghtml_set_proxy */
int ghtml_set_proxy(GtkWidget * ghtml, SurferProxyType type, char const * http,
uint16_t http_port)
{
if(type == SPT_NONE)
return 0;
/* FIXME really implement */
return -error_set_code(1, "%s", strerror(ENOSYS));;
}
/* ghtml_set_user_agent */
int ghtml_set_user_agent(GtkWidget * ghtml, char const * user_agent)
{
if(user_agent == NULL)
return 0;
/* FIXME really implement */
return -error_set_code(1, "%s", strerror(ENOSYS));;
}
/* ghtml_set_zoom */
void ghtml_set_zoom(GtkWidget * widget, gdouble zoom)
{
GHtml * ghtml;
GtkTextIter start;
GtkTextIter end;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
g_object_set(ghtml->zoom, "scale", zoom, NULL);
gtk_text_buffer_get_start_iter(ghtml->tbuffer, &start);
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &end);
gtk_text_buffer_apply_tag(ghtml->tbuffer, ghtml->zoom, &start, &end);
}
/* useful */
/* ghtml_copy */
void ghtml_copy(GtkWidget * widget)
{
GHtml * ghtml;
GtkTextBuffer * buffer;
GtkClipboard * clipboard;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
clipboard = gtk_widget_get_clipboard(ghtml->view,
GDK_SELECTION_CLIPBOARD);
gtk_text_buffer_copy_clipboard(ghtml->tbuffer, clipboard);
}
/* ghtml_cut */
void ghtml_cut(GtkWidget * widget)
{
GHtml * ghtml;
GtkTextBuffer * buffer;
GtkClipboard * clipboard;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
clipboard = gtk_widget_get_clipboard(ghtml->view,
GDK_SELECTION_CLIPBOARD);
gtk_text_buffer_cut_clipboard(ghtml->tbuffer, clipboard, FALSE);
}
/* ghtml_execute */
void ghtml_execute(GtkWidget * ghtml, char const * code)
{
/* FIXME implement */
}
/* ghtml_find */
static char const * _find_string(char const * big, char const * little,
gboolean sensitive);
static gboolean _find_match(GHtml * ghtml, char const * buf, char const * str,
size_t tlen);
gboolean ghtml_find(GtkWidget * widget, char const * text, gboolean sensitive,
gboolean backwards, gboolean wrap)
{
gboolean ret = FALSE;
GHtml * ghtml;
size_t tlen;
GtkTextIter start;
GtkTextIter end;
gchar * buf;
size_t blen;
char const * str;
if(text == NULL || (tlen = strlen(text)) == 0)
return ret;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
/* XXX highly inefficient */
gtk_text_buffer_get_start_iter(ghtml->tbuffer, &start);
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &end);
buf = gtk_text_buffer_get_text(ghtml->tbuffer, &start, &end, FALSE);
if(buf == NULL || (blen = strlen(buf)) == 0)
return ret;
if(ghtml->search >= blen)
ghtml->search = 0;
if((str = _find_string(&buf[ghtml->search], text, sensitive)) != NULL)
ret = _find_match(ghtml, buf, str, tlen);
else if(wrap && ghtml->search != 0) /* wrap around */
{
buf[ghtml->search] = '\0';
if((str = _find_string(buf, text, sensitive)) != NULL)
ret = _find_match(ghtml, buf, str, tlen);
}
g_free(buf);
return ret;
}
static char const * _find_string(char const * big, char const * little,
gboolean sensitive)
{
return sensitive ? strstr(big, little) : strcasestr(big, little);
}
static gboolean _find_match(GHtml * ghtml, char const * buf, char const * str,
size_t tlen)
{
size_t offset;
GtkTextIter start;
GtkTextIter end;
offset = str - buf;
ghtml->search = offset + 1;
gtk_text_buffer_get_iter_at_offset(ghtml->tbuffer, &start, offset);
gtk_text_buffer_get_iter_at_offset(ghtml->tbuffer, &end, offset + tlen);
gtk_text_buffer_select_range(ghtml->tbuffer, &start, &end);
gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(ghtml->view), &start, 0.0,
FALSE, 0.0, 0.0);
return TRUE;
}
/* ghtml_go_back */
gboolean ghtml_go_back(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->current == NULL || ghtml->current->prev == NULL)
return FALSE;
ghtml->current = ghtml->current->prev;
ghtml_load_url(widget, _history_get_location(ghtml->current));
return TRUE;
}
/* ghtml_go_forward */
gboolean ghtml_go_forward(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if(ghtml->current == NULL || ghtml->current->next == NULL)
return FALSE;
ghtml->current = ghtml->current->next;
ghtml_load_url(widget, _history_get_location(ghtml->current));
return TRUE;
}
/* ghtml_load_url */
void ghtml_load_url(GtkWidget * widget, char const * url)
{
GHtml * ghtml;
gchar * link;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
if((link = _ghtml_make_url(NULL, url)) != NULL)
url = link;
_ghtml_document_load(ghtml, url, NULL);
g_free(link);
}
/* ghtml_paste */
void ghtml_paste(GtkWidget * widget)
{
GHtml * ghtml;
GtkTextBuffer * buffer;
GtkClipboard * clipboard;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
clipboard = gtk_widget_get_clipboard(ghtml->view,
GDK_SELECTION_CLIPBOARD);
gtk_text_buffer_paste_clipboard(ghtml->tbuffer, clipboard, NULL, FALSE);
}
/* ghtml_print */
void ghtml_print(GtkWidget * ghtml)
{
/* FIXME implement */
}
/* ghtml_redo */
void ghtml_redo(GtkWidget * widget)
{
/* FIXME implement */
}
/* ghtml_refresh */
void ghtml_refresh(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
_ghtml_stop(ghtml);
/* FIXME give ghtml directly, forgets POST */
ghtml_load_url(widget, _history_get_location(ghtml->current));
}
/* ghtml_reload */
void ghtml_reload(GtkWidget * ghtml)
{
ghtml_refresh(ghtml);
}
/* ghtml_stop */
void ghtml_stop(GtkWidget * widget)
{
GHtml * ghtml;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
_ghtml_stop(ghtml);
}
/* ghtml_select_all */
void ghtml_select_all(GtkWidget * widget)
{
GHtml * ghtml;
GtkTextIter start;
GtkTextIter end;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
gtk_text_buffer_get_start_iter(ghtml->tbuffer, &start);
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &end);
gtk_text_buffer_select_range(ghtml->tbuffer, &start, &end);
}
/* ghtml_undo */
void ghtml_undo(GtkWidget * widget)
{
/* FIXME implement */
}
/* ghtml_unselect_all */
void ghtml_unselect_all(GtkWidget * widget)
{
GHtml * ghtml;
GtkTextIter start;
ghtml = g_object_get_data(G_OBJECT(widget), "ghtml");
gtk_text_buffer_get_start_iter(ghtml->tbuffer, &start);
gtk_text_buffer_select_range(ghtml->tbuffer, &start, &start);
}
/* ghtml_zoom_in */
void ghtml_zoom_in(GtkWidget * widget)
{
gdouble zoom;
zoom = ghtml_get_zoom(widget);
ghtml_set_zoom(widget, zoom + 0.1);
}
/* ghtml_zoom_out */
void ghtml_zoom_out(GtkWidget * widget)
{
gdouble zoom;
zoom = ghtml_get_zoom(widget);
ghtml_set_zoom(widget, zoom - 0.1);
}
/* ghtml_zoom_reset */
void ghtml_zoom_reset(GtkWidget * widget)
{
ghtml_set_zoom(widget, 1.0);
}
/* functions */
static int _document_load_file(GHtml * ghtml, char const * filename);
static int _document_load_url(GHtml * ghtml, char const * url,
char const * post);
static gboolean _document_load_url_idle(gpointer data);
static ssize_t _document_load_url_write(Conn * conn, char const * buf,
size_t size, gpointer data);
static int _document_load_write(GHtml * ghtml, char const * buf, size_t size);
static int _document_load_write_close(GHtml * ghtml);
static void _document_load_write_node(GHtml * ghtml, XMLNode * node);
static void _document_load_write_node_entity(GHtml * ghtml,
XMLNodeEntity * node);
static void _document_load_write_node_tag(GHtml * ghtml, XMLNodeTag * node);
static void _document_load_write_node_tag_link(GHtml * ghtml,
XMLNodeTag * node);
static int _ghtml_document_load(GHtml * ghtml, char const * url,
char const * post)
{
char const * q;
History * h;
_ghtml_stop(ghtml);
if((q = _history_get_location(ghtml->current)) == NULL
|| strcmp(q, url) != 0)
{
if((h = _history_new(url, post)) == NULL)
return 1;
ghtml->current = _history_append(h, ghtml->current);
ghtml->history = g_list_first(ghtml->current);
}
gtk_text_buffer_set_text(ghtml->tbuffer, "", 0);
free(ghtml->buffer);
ghtml->buffer = NULL;
ghtml->buffer_cnt = 0;
ghtml->search = 0;
surfer_set_location(ghtml->surfer, url);
free(ghtml->title);
ghtml->title = NULL;
free(ghtml->base);
ghtml->base = NULL;
surfer_set_title(ghtml->surfer, NULL);
if(strncmp(url, "file:", 5) == 0 || strncmp(url, "/", 1) == 0)
return _document_load_file(ghtml, &url[5]);
return _document_load_url(ghtml, url, post);
}
static int _document_load_file(GHtml * ghtml, char const * filename)
{
FILE * fp;
char buf[BUFSIZ];
size_t size;
if((fp = fopen(filename, "r")) == NULL)
return -error_set_code(1, "%s: %s", filename, strerror(errno));
while((size = fread(buf, sizeof(*buf), sizeof(buf), fp)) > 0)
if(_document_load_write(ghtml, buf, size) != 0)
return -error_set_code(1, "%s: %s", filename,
strerror(errno));
fclose(fp);
return _document_load_write_close(ghtml);
}
static int _document_load_url(GHtml * ghtml, char const * url,
char const * post)
{
if((ghtml->conn = _conn_new(ghtml->surfer, url, post)) == NULL)
return 1;
_conn_set_callback_write(ghtml->conn, _document_load_url_write, ghtml);
g_idle_add(_document_load_url_idle, ghtml);
return 0;
}
static ssize_t _document_load_url_write(Conn * conn, char const * buf,
size_t size, gpointer data)
{
GHtml * ghtml = data;
if(size == 0)
return _document_load_write_close(ghtml);
if(_document_load_write(ghtml, buf, size) != 0)
return -1;
return size;
}
static int _document_load_write(GHtml * ghtml, char const * buf, size_t size)
{
char * p;
if((p = realloc(ghtml->buffer, ghtml->buffer_cnt + size)) == NULL)
return -error_set_code(1, "%s", strerror(errno));
ghtml->buffer = p;
memcpy(&ghtml->buffer[ghtml->buffer_cnt], buf, size);
ghtml->buffer_cnt += size;
return 0;
}
static int _document_load_write_close(GHtml * ghtml)
{
XMLPrefs prefs;
XML * xml;
XMLDocument * doc;
memset(&prefs, 0, sizeof(prefs));
prefs.filters |= XML_FILTER_WHITESPACE;
if((xml = xml_new_string(&prefs, ghtml->buffer,
ghtml->buffer_cnt)) == NULL)
return 0;
ghtml->position = GHTML_POSITION_BEFORE;
if((doc = xml_get_document(xml)) != NULL)
_document_load_write_node(ghtml, doc->root);
xml_delete(xml);
return 0;
}
static void _document_load_write_node(GHtml * ghtml, XMLNode * node)
{
GtkTextIter iter;
if(node == NULL)
return;
switch(node->type)
{
case XML_NODE_TYPE_DATA:
if(ghtml->position == GHTML_POSITION_HEAD_TITLE)
{
free(ghtml->title);
ghtml->title = strdup(node->data.buffer);
surfer_set_title(ghtml->surfer, ghtml->title);
break;
}
else if(ghtml->position != GHTML_POSITION_BODY)
break;
/* FIXME looks like memory corruption at some point */
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &iter);
gtk_text_buffer_insert_with_tags(ghtml->tbuffer, &iter,
node->data.buffer, node->data.size,
ghtml->tag, NULL);
break;
case XML_NODE_TYPE_ENTITY:
_document_load_write_node_entity(ghtml, &node->entity);
break;
case XML_NODE_TYPE_TAG:
_document_load_write_node_tag(ghtml, &node->tag);
break;
}
}
static void _document_load_write_node_entity(GHtml * ghtml,
XMLNodeEntity * node)
{
size_t i;
char const * string = NULL;
GtkTextIter iter;
if(ghtml->position != GHTML_POSITION_BODY)
return;
for(i = 0; i < GHTML_ENTITIES_COUNT; i++)
if(strcmp(_ghtml_entities[i].name, node->name) == 0)
{
string = _ghtml_entities[i].string;
break;
}
if(string == NULL)
return;
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &iter);
gtk_text_buffer_insert_with_tags(ghtml->tbuffer, &iter, string,
strlen(string), ghtml->tag, NULL);
}
static void _document_load_write_node_tag(GHtml * ghtml, XMLNodeTag * node)
{
size_t i;
GHtmlDisplay display = GHTML_DISPLAY_INLINE;
GtkTextIter iter;
GHtmlProperty const * p;
char const * q;
char * r;
ghtml->tag = NULL;
for(i = 0; i < GHTML_TAGS_COUNT; i++)
if(strcmp(ghtml->tags[i].name, node->name) == 0)
break;
if(i < GHTML_TAGS_COUNT)
{
display = ghtml->tags[i].display;
ghtml->tag = ghtml->tags[i].tag;
if(ghtml->tag == NULL && ghtml->tags[i].properties != NULL)
{
ghtml->tag = gtk_text_buffer_create_tag(
ghtml->tbuffer, NULL, NULL);
p = ghtml->tags[i].properties;
if(strcmp(node->name, "a") != 0)
ghtml->tags[i].tag = ghtml->tag;
else
_document_load_write_node_tag_link(ghtml, node);
for(i = 0; p[i].name != NULL; i++)
g_object_set(G_OBJECT(ghtml->tag), p[i].name,
p[i].value, NULL);
}
}
if(strcmp(node->name, "head") == 0)
ghtml->position = GHTML_POSITION_HEAD;
else if(strcmp(node->name, "base") == 0)
{
if(ghtml->position == GHTML_POSITION_HEAD
&& (q = xml_node_get_attribute_value_by_name(
(XMLNode*)node, "href")) != NULL
&& (r = strdup(q)) != NULL)
{
free(ghtml->base);
ghtml->base = r;
}
}
else if(strcmp(node->name, "body") == 0)
ghtml->position = GHTML_POSITION_BODY;
else if(strcmp(node->name, "title") == 0)
{
if(ghtml->position == GHTML_POSITION_HEAD)
ghtml->position = GHTML_POSITION_HEAD_TITLE;
}
if(display == GHTML_DISPLAY_BLOCK)
{
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &iter);
gtk_text_buffer_insert(ghtml->tbuffer, &iter, "\n", 1);
for(i = 0; i < node->childs_cnt; i++)
_document_load_write_node(ghtml, node->childs[i]);
gtk_text_buffer_get_end_iter(ghtml->tbuffer, &iter);
gtk_text_buffer_insert(ghtml->tbuffer, &iter, "\n", 1);
}
else
for(i = 0; i < node->childs_cnt; i++)
_document_load_write_node(ghtml, node->childs[i]);
if(strcmp(node->name, "head") == 0)
ghtml->position = GHTML_POSITION_BEFORE;
else if(strcmp(node->name, "body") == 0)
ghtml->position = GHTML_POSITION_AFTER;
else if(strcmp(node->name, "title") == 0)
{
if(ghtml->position == GHTML_POSITION_HEAD_TITLE)
ghtml->position = GHTML_POSITION_HEAD;
}
}
static void _document_load_write_node_tag_link(GHtml * ghtml, XMLNodeTag * node)
{
size_t i;
for(i = 0; i < node->attributes_cnt; i++)
if(strcmp(node->attributes[i]->name, "href") == 0)
break;
if(i < node->attributes_cnt)
g_object_set_data(G_OBJECT(ghtml->tag), "link", strdup(
node->attributes[i]->value));
}
static gboolean _document_load_url_idle(gpointer data)
{
GHtml * ghtml = data;
if(ghtml->conn != NULL)
_conn_load(ghtml->conn);
return FALSE;
}
/* ghtml_stop */
static int _ghtml_stop(GHtml * ghtml)
{
if(ghtml->conn == NULL)
return 0;
_conn_delete(ghtml->conn);
ghtml->conn = NULL;
return 0;
}
/* callbacks */
/* on_view_event_after */
static gboolean _on_view_event_after(GtkWidget * widget, GdkEvent * event,
gpointer data)
{
GHtml * ghtml = data;
GdkEventButton * eb;
GtkTextIter start;
GtkTextIter end;
gint x;
gint y;
GtkTextIter iter;
GSList * tags;
GSList * p;
char * link = NULL;
gchar * url;
if(event->type != GDK_BUTTON_RELEASE || event->button.button != 1)
return FALSE;
eb = &event->button;
gtk_text_buffer_get_selection_bounds(ghtml->tbuffer, &start, &end);
if(gtk_text_iter_get_offset(&start) != gtk_text_iter_get_offset(&end))
return FALSE;
gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(widget),
GTK_TEXT_WINDOW_WIDGET, eb->x, eb->y, &x, &y);
gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(widget), &iter, x, y);
tags = gtk_text_iter_get_tags(&iter);
for(p = tags; p != NULL; p = p->next)
if((link = g_object_get_data(G_OBJECT(p->data), "link"))
!= NULL)
break;
if(tags != NULL)
g_slist_free(tags);
if(link == NULL)
return FALSE;
url = (ghtml->base != NULL) ? ghtml->base : _history_get_location(
ghtml->current);
if((url = _ghtml_make_url(url, link)) != NULL)
surfer_open(ghtml->surfer, url);
else
surfer_open(ghtml->surfer, link);
g_free(url);
return FALSE;
}