--- /dev/null
+-- Bookmark system for Links-Lua.
+-- $Id$
+
+-----------------------------------------------------------------------
+-- User options
+---------------------------------------------------------------------
+
+-- Default location to save and load bookmarks from.
+bm_bookmark_file = home_dir.."/.links/bookmark.lst"
+
+-- Set to non-`nil' to see URLs in the generated page.
+bm_display_urls = nil
+
+-- Set to non-`nil' to show links to category headers.
+-- Only useful while sorting categories, otherwise just annoying.
+bm_display_category_links = 1
+
+-- Set to non-`nil' to automatically sort bookmarks alphabetically.
+-- Do not set this if you care about the sorting of your bookmarks!
+bm_auto_sort_bookmarks = nil
+
+
+----------------------------------------------------------------------
+-- Implementation
+----------------------------------------------------------------------
+
+-- We use a special syntax that looks like
+-- user:bookmark/1 (for categories)
+-- user:bookmark/1,2/http://some.phony.url/ (for bookmarks)
+bm_marker = 'user:bookmark'
+
+
+if not bm_bookmarks then
+ -- If the user reloads this script, we don't want to
+ -- lose all the bookmarks! :-)
+ bm_bookmarks = {}
+end
+
+
+function bm_is_category (str)
+ local _,n = gsub (str, bm_marker..'/%d+$', '')
+ return n ~= 0
+end
+
+
+function bm_is_bookmark (str)
+ local _,n = gsub (str, bm_marker..'/%d+,%d+/', '')
+ return n ~= 0
+end
+
+
+function bm_decode_info (str)
+ if bm_is_category (str) then
+ str = gsub (str, '.-/(%d+)', 'return %1')
+ else
+ str = gsub (str, '.-/(%d+),(%d+)/(.*)', 'return %1,%2,"%3"')
+ end
+ return dostring (str)
+end
+
+
+function bm_find_category (cat)
+ for i = 1, getn (bm_bookmarks) do
+ local table = bm_bookmarks[i]
+ if table.category == cat then return table end
+ end
+end
+
+
+function bm_sort_bookmarks ()
+ if not bm_auto_sort_bookmarks then return end
+ sort (bm_bookmarks, function (a, b) return a.category < b.category end)
+ foreachi (bm_bookmarks,
+ function (i, v)
+ sort (v, function (a, b) return a.name < b. name end)
+ end)
+end
+
+
+function bm_generate_html ()
+ local s = '<html><head><title>Bookmarks</title></head>'
+ ..'<body link=blue>\n'
+ for i = 1, getn (bm_bookmarks) do
+ local table = bm_bookmarks[i]
+ s = s..'<h3>'
+ if bm_display_category_links then
+ s = s..'<a href="'..bm_marker..'/'..i..'">'
+ end
+ s = s..'<font color=gray>'..table.category..'</font>'
+ if bm_display_category_links then
+ s = s..'</a>'
+ end
+ s = s..'</h3>\n<ul>\n'
+ for j = 1, getn (table) do
+ local bm = table[j]
+ s = s..'<li><a href="'..bm_marker..'/'..i..','..j..'/'
+ ..bm.url..'">'..bm.name..'</a>\n'
+ if bm_display_urls then s = s..'<br>'..bm.url..'\n' end
+ end
+ s = s..'</ul>\n'
+ end
+ s = s..'<hr>'..date ()..'\n'
+ return s..'</body></html>\n'
+end
+
+
+-- Write bookmarks to disk.
+function bm_save_bookmarks (filename)
+ if bm_dont_save then return end
+
+ function esc (str)
+ return gsub (str, "([^-%w \t_@#:/'().])",
+ function (s)
+ return format ("\\%03d", strbyte (s))
+ end)
+ end
+
+ if not filename then filename = bm_bookmark_file end
+ local tab = ' '
+ writeto (filename)
+ write ('return {\n')
+ for i = 1, getn (bm_bookmarks) do
+ local table = bm_bookmarks[i]
+ write (tab..'{\n'..tab..tab..'category = "'
+ ..esc (table.category)..'";\n')
+ for i = 1, getn (table) do
+ local bm = table[i]
+ write (tab..tab..'{ name = "'..esc (bm.name)..'", url = "'
+ ..esc (bm.url)..'" },\n')
+ end
+ write (tab..'},\n')
+ end
+ write ('}\n')
+ writeto ()
+end
+
+
+-- Load bookmarks from disk.
+function bm_load_bookmarks (filename)
+ if not filename then filename = bm_bookmark_file end
+ local tmp = dofile (filename)
+ if type (tmp) == 'table' then
+ bm_bookmarks = tmp
+ bm_sort_bookmarks ()
+ bm_dont_save = nil
+ else
+ _ALERT ("Error loading "..filename)
+ bm_dont_save = 1
+ end
+end
+
+
+-- Return the URL of a bookmark.
+function bm_get_bookmark_url (bm)
+ if bm_is_bookmark (bm) then
+ local _,_,url = bm_decode_info (bm)
+ return url
+ end
+end
+
+
+-- Bind this to a key to display bookmarks.
+function bm_view_bookmarks ()
+ local tmp = tmpname()..'.html'
+ writeto (tmp)
+ write (bm_generate_html ())
+ writeto ()
+ tinsert (tmp_files, tmp)
+ return 'goto_url', tmp
+end
+
+
+function bm_do_add_bookmark (cat, name, url)
+ if cat == "" or name == "" or url == "" then
+ _ALERT ("Bad bookmark entry")
+ end
+ local table = bm_find_category (cat)
+ if not table then
+ table = { category = cat }
+ tinsert (bm_bookmarks, table)
+ end
+ tinsert (table, { name = name, url = url })
+ bm_sort_bookmarks ()
+end
+
+
+-- Bind this to a key to add a bookmark.
+function bm_add_bookmark ()
+ edit_bookmark_dialog ('', current_title () or '', current_url () or '',
+ function (cat, name, url)
+ bm_do_add_bookmark (cat, name, url)
+ if current_title () == 'Bookmarks' then
+ return bm_view_bookmarks ()
+ end
+ end)
+end
+
+
+-- Bind this to a key to edit the currently highlighted bookmark.
+function bm_edit_bookmark ()
+ local bm = current_link ()
+ if not bm then
+ elseif bm_is_category (bm) then
+ local i = bm_decode_info (bm)
+ edit_bookmark_dialog (bm_bookmarks[i].category, '', '',
+ function (cat)
+ if cat == '' then
+ _ALERT ('Bad input')
+ elseif bm_bookmarks[%i].category ~= cat then
+ local j = bm_find_category (cat)
+ if not j then
+ bm_bookmarks[%i].category = cat
+ else
+ local tmp = bm_bookmarks[%i]
+ for i = 1, getn (tmp) do
+ bm_do_add_bookmark (cat, tmp[i].name, tmp[i].url)
+ end
+ bm_delete_bookmark (%i)
+ end
+ return bm_view_bookmarks ()
+ end
+ end)
+
+ elseif bm_is_bookmark (bm) then
+ local i,j = bm_decode_info (bm)
+ local entry = bm_bookmarks[i][j]
+ edit_bookmark_dialog (bm_bookmarks[i].category,
+ entry.name, entry.url,
+ function (cat, name, url)
+ if cat == '' or name == '' or url == '' then
+ _ALERT ('Bad input')
+ else
+ if cat ~= bm_bookmarks[%i].category then
+ bm_do_delete_bookmark (%i, %j)
+ bm_do_add_bookmark (cat, name, url)
+ else
+ %entry.name = name
+ %entry.url = url
+ end
+ return bm_view_bookmarks ()
+ end
+ end)
+ end
+end
+
+
+function bm_do_delete_bookmark (i, j)
+ if not j then
+ tremove (bm_bookmarks, i)
+ else
+ tremove (bm_bookmarks[i], j)
+ if getn (bm_bookmarks[i]) == 0 then tremove (bm_bookmarks, i) end
+ end
+end
+
+
+-- Bind this to a key to delete the currently highlighted bookmark.
+function bm_delete_bookmark ()
+ local bm = current_link ()
+ if bm and (bm_is_category (bm) or bm_is_bookmark (bm)) then
+ local i,j = bm_decode_info (bm)
+ bm_do_delete_bookmark (i, j)
+ return bm_view_bookmarks ()
+ end
+end
+
+
+function bm_do_move_bookmark (dir)
+ function tswap (t, i, j)
+ if i > 0 and j > 0 and i <= getn (t) and j <= getn (t) then
+ local x = t[i]; t[i] = t[j]; t[j] = x
+ return 1
+ end
+ end
+
+ local bm = current_link ()
+ if not bm then
+ elseif bm_is_category (bm) then
+ local i = bm_decode_info (bm)
+ if tswap (bm_bookmarks, i, i+dir) then
+ return bm_view_bookmarks ()
+ end
+ elseif bm_is_bookmark (bm) then
+ local i,j = bm_decode_info (bm)
+ if bm_bookmarks[i] and tswap (bm_bookmarks[i], j, j+dir) then
+ return bm_view_bookmarks ()
+ end
+ end
+end
+
+
+-- Bind this to a key to move the currently highlighted bookmark up.
+function bm_move_bookmark_up ()
+ if not bm_auto_sort_bookmarks then return bm_do_move_bookmark (-1) end
+end
+
+
+-- Bind this to a key to move the currently highlighted bookmark down.
+function bm_move_bookmark_down ()
+ if not bm_auto_sort_bookmarks then return bm_do_move_bookmark (1) end
+end
+
+
+-- vim: shiftwidth=4 softtabstop=4
projects / packages / elinks.git / blobdiff