mirror of
https://github.com/rkd77/elinks.git
synced 2024-06-15 23:35:34 +00:00
339 lines
8.5 KiB
Lua
339 lines
8.5 KiB
Lua
-- Bookmark system for Links-Lua.
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-----------------------------------------------------------------------
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-- User options
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---------------------------------------------------------------------
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-- Default location to save and load bookmarks from.
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bm_bookmark_file = elinks_home.."/bookmark.lst"
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-- Set to non-`nil' to see URLs in the generated page.
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bm_display_urls = nil
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-- Set to non-`nil' to show links to category headers.
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-- Only useful while sorting categories, otherwise just annoying.
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bm_display_category_links = 1
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-- Set to non-`nil' to automatically sort bookmarks alphabetically.
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-- Do not set this if you care about the sorting of your bookmarks!
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bm_auto_sort_bookmarks = nil
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----------------------------------------------------------------------
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-- Implementation
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----------------------------------------------------------------------
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-- We use a special syntax that looks like
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-- user:bookmark/1 (for categories)
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-- user:bookmark/1,2/http://some.phony.url/ (for bookmarks)
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bm_marker = 'user:bookmark'
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if not bm_bookmarks then
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-- If the user reloads this script, we don't want to
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-- lose all the bookmarks! :-)
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bm_bookmarks = {}
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end
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function bm_is_category (str)
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local _,n = string.gsub (str, bm_marker..'/%d+$', '')
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return n ~= 0
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end
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function bm_is_bookmark (str)
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local _,n = string.gsub (str, bm_marker..'/%d+,%d+/', '')
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return n ~= 0
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end
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function bm_decode_info (str)
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if bm_is_category (str) then
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str = string.gsub (str, '.-/(%d+)', 'return %1')
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else
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str = string.gsub (str, '.-/(%d+),(%d+)/(.*)', 'return %1,%2,"%3"')
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end
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return dostring (str)
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end
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function bm_find_category (cat)
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for i = 1, table.getn (bm_bookmarks) do
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local table = bm_bookmarks[i]
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if table.category == cat then return table end
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end
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end
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function bm_sort_bookmarks ()
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if not bm_auto_sort_bookmarks then return end
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table.sort (bm_bookmarks, function (a, b) return a.category < b.category end)
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for i,v in ipairs(bm_bookmarks)
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do
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table.sort (v, function (a, b) return a.name < b. name end)
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end
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end
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function bm_generate_html ()
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local s = '<html><head><title>Bookmarks</title></head>'
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..'<body link=blue>\n'
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for i = 1, table.getn (bm_bookmarks) do
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local table = bm_bookmarks[i]
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s = s..'<h3>'
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if bm_display_category_links then
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s = s..'<a href="'..bm_marker..'/'..i..'">'
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end
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s = s..'<font color=gray>'..table.category..'</font>'
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if bm_display_category_links then
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s = s..'</a>'
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end
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s = s..'</h3>\n<ul>\n'
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for j = 1, table.getn (table) do
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local bm = table[j]
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s = s..'<li><a href="'..bm_marker..'/'..i..','..j..'/'
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..bm.url..'">'..bm.name..'</a>\n'
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if bm_display_urls then s = s..'<br>'..bm.url..'\n' end
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end
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s = s..'</ul>\n'
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end
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s = s..'<hr>'..os.date ()..'\n'
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return s..'</body></html>\n'
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end
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-- Write bookmarks to disk.
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function bm_save_bookmarks (filename)
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if bm_dont_save then return end
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function esc (str)
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return string.gsub (str, "([^-%w \t_@#:/'().])",
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function (s)
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return string.format ("\\%03d", string.byte (s))
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end)
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end
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if not filename then filename = bm_bookmark_file end
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local tab = ' '
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writeto (filename)
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write ('return {\n')
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for i = 1, table.getn (bm_bookmarks) do
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local table = bm_bookmarks[i]
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write (tab..'{\n'..tab..tab..'category = "'
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..esc (table.category)..'";\n')
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for i = 1, table.getn (table) do
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local bm = table[i]
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write (tab..tab..'{ name = "'..esc (bm.name)..'", url = "'
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..esc (bm.url)..'" },\n')
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end
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write (tab..'},\n')
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end
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write ('}\n')
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writeto ()
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end
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-- Load bookmarks from disk.
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function bm_load_bookmarks (filename)
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if not filename then filename = bm_bookmark_file end
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local tmp = dofile (filename)
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if type (tmp) == 'table' then
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bm_bookmarks = tmp
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bm_sort_bookmarks ()
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bm_dont_save = nil
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else
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_ALERT ("Error loading "..filename)
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bm_dont_save = 1
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end
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end
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-- Return the URL of a bookmark.
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function bm_get_bookmark_url (bm)
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if bm_is_bookmark (bm) then
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local _,_,url = bm_decode_info (bm)
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return url
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end
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end
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-- Bind this to a key to display bookmarks.
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function bm_view_bookmarks ()
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local tmp = tmpname()..'.html'
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writeto (tmp)
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write (bm_generate_html ())
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writeto ()
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table.insert (tmp_files, tmp)
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return 'goto_url', tmp
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end
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function bm_do_add_bookmark (cat, name, url)
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if cat == "" or name == "" or url == "" then
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_ALERT ("Bad bookmark entry")
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end
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local table = bm_find_category (cat)
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if not table then
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table = { category = cat }
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table.insert (bm_bookmarks, table)
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end
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table.insert (table, { name = name, url = url })
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bm_sort_bookmarks ()
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end
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-- Bind this to a key to add a bookmark.
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function bm_add_bookmark ()
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edit_bookmark_dialog ('', current_title () or '', current_url () or '',
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function (cat, name, url)
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bm_do_add_bookmark (cat, name, url)
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if current_title () == 'Bookmarks' then
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return bm_view_bookmarks ()
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end
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end)
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end
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-- Bind this to a key to edit the currently highlighted bookmark.
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function bm_edit_bookmark ()
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local bm = current_link ()
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if not bm then
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elseif bm_is_category (bm) then
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local i = bm_decode_info (bm)
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edit_bookmark_dialog (bm_bookmarks[i].category, '', '',
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function (cat)
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if cat == '' then
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_ALERT ('Bad input')
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elseif bm_bookmarks[i].category ~= cat then
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local j = bm_find_category (cat)
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if not j then
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bm_bookmarks[i].category = cat
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else
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local tmp = bm_bookmarks[i]
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for i = 1, table.getn (tmp) do
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bm_do_add_bookmark (cat, tmp[i].name, tmp[i].url)
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end
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bm_delete_bookmark (i)
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end
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return bm_view_bookmarks ()
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end
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end)
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elseif bm_is_bookmark (bm) then
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local i,j = bm_decode_info (bm)
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local entry = bm_bookmarks[i][j]
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edit_bookmark_dialog (bm_bookmarks[i].category,
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entry.name, entry.url,
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function (cat, name, url)
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if cat == '' or name == '' or url == '' then
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_ALERT ('Bad input')
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else
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if cat ~= bm_bookmarks[i].category then
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bm_do_delete_bookmark (i, j)
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bm_do_add_bookmark (cat, name, url)
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else
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entry.name = name
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entry.url = url
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end
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return bm_view_bookmarks ()
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end
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end)
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end
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end
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function bm_do_delete_bookmark (i, j)
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if not j then
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table.remove (bm_bookmarks, i)
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else
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table.remove (bm_bookmarks[i], j)
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if table.getn (bm_bookmarks[i]) == 0 then table.remove (bm_bookmarks, i) end
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end
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end
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-- Bind this to a key to delete the currently highlighted bookmark.
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function bm_delete_bookmark ()
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local bm = current_link ()
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if bm and (bm_is_category (bm) or bm_is_bookmark (bm)) then
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local i,j = bm_decode_info (bm)
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bm_do_delete_bookmark (i, j)
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return bm_view_bookmarks ()
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end
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end
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function bm_do_move_bookmark (dir)
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function tswap (t, i, j)
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if i > 0 and j > 0 and i <= table.getn (t) and j <= table.getn (t) then
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local x = t[i]; t[i] = t[j]; t[j] = x
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return 1
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end
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end
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local bm = current_link ()
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if not bm then
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elseif bm_is_category (bm) then
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local i = bm_decode_info (bm)
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if tswap (bm_bookmarks, i, i+dir) then
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return bm_view_bookmarks ()
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end
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elseif bm_is_bookmark (bm) then
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local i,j = bm_decode_info (bm)
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if bm_bookmarks[i] and tswap (bm_bookmarks[i], j, j+dir) then
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return bm_view_bookmarks ()
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end
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end
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end
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-- Bind this to a key to move the currently highlighted bookmark up.
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function bm_move_bookmark_up ()
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if not bm_auto_sort_bookmarks then return bm_do_move_bookmark (-1) end
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end
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-- Bind this to a key to move the currently highlighted bookmark down.
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function bm_move_bookmark_down ()
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if not bm_auto_sort_bookmarks then return bm_do_move_bookmark (1) end
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end
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function bookmarks_follow_url_hook (url)
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if bm_is_category (url) then
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return nil,true
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else
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url = bm_get_bookmark_url (url)
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if url then return url,true end
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end
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return url,nil
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end
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table.insert(follow_url_hooks, bookmarks_follow_url_hook)
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function bookmarks_quit_hook ()
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bm_save_bookmarks ()
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end
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table.insert(quit_hooks, bookmarks_quit_hook)
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-- Be careful not to load bookmarks if this script is being
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-- reloaded while in ELinks, or we will lose unsaved changes.
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if not bm_bookmarks or table.getn (bm_bookmarks) == 0 then
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bm_load_bookmarks ()
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end
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-- My bookmark key bindings.
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-- bind_key ('main', 'a', bm_add_bookmark)
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-- bind_key ('main', 's', bm_view_bookmarks)
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-- bind_key ('main', 'Alt-e', bm_edit_bookmark)
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-- bind_key ('main', 'Alt-d', bm_delete_bookmark)
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-- bind_key ('main', 'Alt-k', bm_move_bookmark_up)
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-- bind_key ('main', 'Alt-j', bm_move_bookmark_down)
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-- vim: shiftwidth=4 softtabstop=4
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