mirror of
https://github.com/rkd77/elinks.git
synced 2024-12-04 14:46:47 -05:00
575 lines
19 KiB
Lua
575 lines
19 KiB
Lua
-- Example hooks.lua file, put in ~/.elinks/ as hooks.lua.
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-- TODO: Bookmarks stuff should be completely moved to bm.lua. --pasky
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-- Take care about @SOMETHING@, we're processed with autoconf!
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----------------------------------------------------------------------
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-- Compatibility routines for Lua 4 code.
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-- Taken from Lua's compat.lua.
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----------------------------------------------------------------------
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_INPUT = io.stdin
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_OUTPUT = io.stdout
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function writeto (name)
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if name == nil then
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local f, err, cod = io.close(_OUTPUT)
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_OUTPUT = io.stdout
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return f, err, cod
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else
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local f, err, cod = io.open(name, "w")
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_OUTPUT = f or _OUTPUT
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return f, err, cod
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end
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end
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function write (...)
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local f = _OUTPUT
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if type(arg[1]) == 'userdata' then
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f = table.remove(arg, 1)
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end
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return f:write(unpack(arg))
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end
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function read (...)
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local f = _INPUT
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if type(arg[1]) == 'userdata' then
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f = table.remove(arg, 1)
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end
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return f:read(unpack(arg))
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end
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function do_ (f, err)
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if not f then _ALERT(err); return end
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local a,b = pcall(f)
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if not a then _ALERT(b); return nil
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else return b or true
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end
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end
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function dostring(s) return do_(loadstring(s)) end
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function dofile(s) return do_(loadfile(s)) end
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----------------------------------------------------------------------
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-- Load configuration
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----------------------------------------------------------------------
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function file_exists(filename)
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local f = io.open(filename, "r")
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if f then
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io.close(f)
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return 1
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end
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return nil
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end
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function dofile_if_fileexists(filename)
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if file_exists(filename) then dofile(filename) end
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end
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dofile_if_fileexists ("@sysconfdir@/config.lua")
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home_dir = (os.getenv ("HOME") or "/home/"..os.getenv("USER")) or "."
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hooks_file = elinks_home.."/hooks.lua" -- for reload()
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dofile_if_fileexists (elinks_home.."/config.lua")
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----------------------------------------------------------------------
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-- hooks
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----------------------------------------------------------------------
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pre_format_html_hooks = {n=0}
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function pre_format_html_hook (url, html)
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local changed = nil
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table.foreachi(pre_format_html_hooks,
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function (i, fn)
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local new,stop = fn(url,html)
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if new then html=new changed=1 end
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return stop
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end)
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return changed and html
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end
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goto_url_hooks = {n=0}
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function goto_url_hook (url, current_url)
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table.foreachi(goto_url_hooks,
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function (i, fn)
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local new,stop = fn(url, current_url)
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url = new
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return stop
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end)
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return url
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end
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follow_url_hooks = {n=0}
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function follow_url_hook (url)
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table.foreachi(follow_url_hooks,
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function (i, fn)
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local new,stop = fn(url)
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url = new
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return stop
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end)
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return url
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end
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quit_hooks = {n=0}
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function quit_hook (url, html)
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table.foreachi(quit_hooks, function (i, fn) return fn() end)
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end
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----------------------------------------------------------------------
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-- case-insensitive string.gsub
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----------------------------------------------------------------------
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-- Please note that this is not completely correct yet.
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-- It will not handle pattern classes like %a properly.
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-- FIXME: Handle pattern classes.
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function gisub (s, pat, repl, n)
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pat = string.gsub (pat, '(%a)',
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function (v) return '['..string.upper(v)..string.lower(v)..']' end)
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if n then
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return string.gsub (s, pat, repl, n)
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else
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return string.gsub (s, pat, repl)
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end
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end
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----------------------------------------------------------------------
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-- goto_url_hook
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----------------------------------------------------------------------
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function match (prefix, url)
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return string.sub (url, 1, string.len (prefix)) == prefix
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end
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function hx (c)
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return string.char((c >= 10 and (c - 10) + string.byte ('A')) or c + string.byte ('0'))
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end
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function char2hex (c)
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return '%'..hx (string.byte (c) / 16)..hx (math.mod(string.byte (c), 16))
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end
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function escape (str)
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return string.gsub (str, "(%W)", char2hex)
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end
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-- You can write smt like "gg" to goto URL dialog and it'll go to google.com.
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-- Note that this is obsoleted by the URI rewrite plugin.
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dumbprefixes = {
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arc = "http://web.archive.org/web/*/%c",
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b = "http://babelfish.altavista.com/babelfish/tr",
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bz = "http://bugzilla.elinks.cz",
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bug = "http://bugzilla.elinks.cz",
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d = "http://www.dict.org",
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g = "http://www.google.com/",
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gg = "http://www.google.com/",
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go = "http://www.google.com/",
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fm = "http://www.freshmeat.net/",
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sf = "http://www.sourceforge.net/",
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dbug = "http://bugs.debian.org/",
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dpkg = "http://packages.debian.org/",
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-- Hm, is this Debian-centric? -- Miciah
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lua = "file:///usr/share/doc/lua40-doc/manual/idx.html",
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pycur = "http://www.python.org/doc/current/",
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pydev = "http://www.python.org/dev/doc/devel/",
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pyhelp = "http://starship.python.net/crew/theller/pyhelp.cgi",
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pyvault = "http://www.vex.net/parnassus/",
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e2 = "http://www.everything2.org/",
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sd = "http://www.slashdot.org/",
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vhtml = "http://validator.w3.org/check?uri=%c",
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vcss = "http://jigsaw.w3.org/css-validator/validator?uri=%c",
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}
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function debian_package (url, t)
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url = string.gsub(url, '(%w+):(%w+)', function (key, val) t[key] = val end)
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return 'http://packages.debian.org/cgi-bin/search_contents.pl?word='
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..escape(string.gsub(url, '%s*([^%s]+)%s*', '%1'))
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..'&searchmode='..(t.searchmode or 'searchfilesanddirs')
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..'&case='..(t.case or 'insensitive')
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..'&version='..(t.version or pipe_read('test -r /etc/debian_version && cut -d/ -f1 /etc/debian_version | tr -d \\\\n || echo stable') or 'stable')
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..'&arch='..(t.arch or pipe_read('test -x /usr/bin/dpkg-architecture && dpkg-architecture -qDEB_HOST_ARCH | tr -d \\\\n || echo i386'))
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end
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function debian_contents (url)
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return debian_package (url, { searchmode = "filelist" })
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end
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function debian_file (url)
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return debian_package (url, { searchmode = "searchfilesanddirs" })
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end
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function cvsweb (base, project, url)
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local t = {n=0}
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local file, old, new
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local replacements
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-- allow <file>:<revision>[-><revision>]
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url,replacements = string.gsub(url, "^(.*):(.*)->(.*)$", "%1 %2 %3")
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if replacements == 0 then url = string.gsub(url, "^(.*):(.*)$", "%1 %2") end
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-- split into words
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string.gsub(url, "([^%s]+)", function (w) table.insert(t, w) end)
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file, old, new = t[1], t[2], t[3]
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if t[4] then error('this smartprefix takes only one to three arguments') return nil end
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if not file then error('no file given') return nil end
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if new then return base..project.."/"..file..".diff?r1="..old.."&r2="..new.."&f=u"
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elseif old then return base.."~checkout~/"..project.."/"..file..(old ~= "latest" and "?rev="..old or "")
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else return base..project.."/"..file
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end
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end
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function gmane (url)
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local group, words
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_,_,group,words = string.find(url, "([^%s]+)%s%s*(.*)$")
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if not words then return nil end
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return "http://search.gmane.org/search.php?query="..words.."&group="..group
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end
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-- You can write "gg:foo" or "gg foo" to goto URL dialog and it'll ask google
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-- for it automagically.
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-- Note that this is _mostly_ obsoleted by the URI rewrite plugin. (It can't do the
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-- metas, though.)
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function bugzilla (base_url, arguments)
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if not arguments or arguments == '' then return base_url end
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if string.find(arguments, '^[%d]+$') then
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return base_url..'show_bug.cgi?id='..arguments
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end
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return base_url..'buglist.cgi?short_desc_type=allwordssubstr'
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..'&short_desc='..escape(arguments)
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end
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smartprefixes = {
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arc = "http://web.archive.org/web/*/%s",
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bug = function (url) return bugzilla('http://bugzilla.elinks.cz/', url) end,
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cambridge = "http://dictionary.cambridge.org/results.asp?searchword=%s",
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cliki = "http://www.cliki.net/admin/search?words=%s",
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-- If you want to add a smartprefix for another project's CVSweb,
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-- just create a lambda like this. Aren't high-level languages fun?
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cvs = function (x) return cvsweb ("http://cvsweb.elinks.cz/cvsweb.cgi/", "elinks", x) end,
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d = "http://www.dict.org/bin/Dict?Query=%s&Form=Dict1&Strategy=*&Database=*&submit=Submit+query",
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debcontents = debian_contents,
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debfile = debian_file,
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dmoz = "http://search.dmoz.org/cgi-bin/search?search=%s",
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foldoc = "http://wombat.doc.ic.ac.uk/foldoc/foldoc.cgi?%s",
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g = "http://www.google.com/search?q=%s&btnG=Google+Search",
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gd = "http://www.google.com/search?q=%s&cat=gwd/Top",
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gg = "http://www.google.com/search?q=%s&btnG=Google+Search",
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-- Whose idea was it to use 'gg' for websearches? -- Miciah
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--gg = "http://groups.google.com/groups?q=%s",
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gi = "http://images.google.com/images?q=%s",
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gmane = gmane,
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gn = "http://news.google.com/news?q=%s",
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go = "http://www.google.com/search?q=%s&btnG=Google+Search",
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gwho = "http://www.googlism.com/?ism=%s&name=1",
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gwhat = "http://www.googlism.com/?ism=%s&name=2",
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gwhere = "http://www.googlism.com/?ism=%s&name=3",
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gwhen = "http://www.googlism.com/?ism=%s&name=4",
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fm = "http://www.freshmeat.net/search/?q=%s",
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savannah = "http://savannah.nongnu.org/search/?words=%s&type_of_search=soft&exact=1",
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sf = "http://sourceforge.net/search/?q=%s",
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sfp = "http://sourceforge.net/projects/%s",
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sd = "http://www.slashdot.org/search.pl?query=%s",
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sdc = "http://www.slashdot.org/search.pl?query=%s&op=comments",
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sdu = "http://www.slashdot.org/search.pl?query=%s&op=users",
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sdp = "http://www.slashdot.org/search.pl?query=%s&op=polls",
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sdj = "http://www.slashdot.org/search.pl?query=%s&op=journals",
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dbug = "http://bugs.debian.org/%s",
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dpkg = "http://packages.debian.org/%s",
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emacs = "http://www.emacswiki.org/cgi-bin/wiki.pl?search=%s",
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lyrics = "http://music.lycos.com/lyrics/results.asp?QT=L&QW=%s",
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lxr = "http://lxr.linux.no/ident?i=%s",
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leo = "http://dict.leo.org/?search=%s",
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onelook = "http://onelook.com/?w=%s&ls=a",
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py = "http://starship.python.net/crew/theller/pyhelp.cgi?keyword=%s&version=current",
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pydev = "http://starship.python.net/crew/theller/pyhelp.cgi?keyword=%s&version=devel",
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pyvault = "http://py.vaults.ca/apyllo.py?find=%s",
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e2 = "http://www.everything2.org/?node=%s",
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encz = "http://www.slovnik.cz/bin/ecd?ecd_il=1&ecd_vcb=%s&ecd_trn=translate&ecd_trn_dir=0&ecd_lines=15&ecd_hptxt=0",
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czen = "http://www.slovnik.cz/bin/ecd?ecd_il=1&ecd_vcb=%s&ecd_trn=translate&ecd_trn_dir=1&ecd_lines=15&ecd_hptxt=0",
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dict = "http://dictionary.reference.com/search?q=%s",
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thes = "http://thesaurus.reference.com/search?q=%s",
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a = "http://acronymfinder.com/af-query.asp?String=exact&Acronym=%s",
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imdb = "http://imdb.com/Find?%s",
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mw = "http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=%s",
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mwt = "http://www.m-w.com/cgi-bin/thesaurus?book=Thesaurus&va=%s",
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whatis = "http://uptime.netcraft.com/up/graph/?host=%s",
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wiki = "http://www.wikipedia.org/w/wiki.phtml?search=%s",
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wn = "http://www.cogsci.princeton.edu/cgi-bin/webwn1.7.1?stage=1&word=%s",
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-- rfc by number
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rfc = "http://www.rfc-editor.org/rfc/rfc%s.txt",
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-- rfc search
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rfcs = "http://www.rfc-editor.org/cgi-bin/rfcsearch.pl?searchwords=%s&format=http&abstract=abson&keywords=keyon&num=25",
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cr = "http://www.rfc-editor.org/cgi-bin/rfcsearch.pl?searchwords=%s&format=http&abstract=abson&keywords=keyon&num=25",
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-- Internet Draft search
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rfcid = "http://www.rfc-editor.org/cgi-bin/idsearch.pl?searchwords=%s&format=http&abstract=abson&keywords=keyon&num=25",
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urbandict = "http://www.urbandictionary.com/define.php?term=%s",
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id = "http://www.rfc-editor.org/cgi-bin/idsearch.pl?searchwords=%s&format=http&abstract=abson&keywords=keyon&num=25",
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draft = "http://www.rfc-editor.org/cgi-bin/idsearch.pl?searchwords=%s&format=http&abstract=abson&keywords=keyon&num=25",
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}
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-- Expand ~ to home directories.
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function expand_tilde (url, current_url)
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if not match ("~", url) then return url,nil end
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if string.sub(url, 2, 2) == "/" or string.len(url) == 1 then -- ~/foo
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return home_dir..string.sub(url, 2),true
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else -- ~foo/bar
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return "/home/"..string.sub(url, 2),true
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end
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end
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table.insert(goto_url_hooks, expand_tilde)
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-- Don't take localhost as directory name
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function expand_localhost (url)
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if not match("localhost", url) then return url,nil end
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return "http://"..url,nil
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end
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table.insert(goto_url_hooks, expand_localhost)
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function complete_uri_prefix (url, current_url)
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if dumbprefixes[url] then
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return string.gsub(dumbprefixes[url], "%%c", current_url or ""),true
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end
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if string.find(url,'%s') or string.find(url, ':') then
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local _,_,nick,val = string.find(url, "^([^%s:]+)[:%s]%s*(.-)%s*$")
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if nick and smartprefixes[nick] then
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if type(smartprefixes[nick]) == 'function' then
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return smartprefixes[nick](val),true
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elseif type(smartprefixes[nick]) == 'string' then
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return string.format(smartprefixes[nick], escape(val)),true
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else
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error('smartprefix "'..nick..'" has unsupported type "'
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..type(smartprefixes[nick])..'".')
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return url,nil
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end
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end
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end
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-- Unmatched.
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return url,nil
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end
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table.insert(goto_url_hooks, complete_uri_prefix)
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----------------------------------------------------------------------
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-- pre_format_html_hook
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----------------------------------------------------------------------
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-- Plain string.find (no metacharacters).
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function sstrfind (s, pattern)
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return string.find (s, pattern, 1, 1)
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end
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-- Mangle ALT="" in IMG tags.
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function mangle_blank_alt (url, html)
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local n
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if not mangle_blank_alt then return nil,nil end
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html, n = gisub (html, '(<img[^>]-) alt=""', '%1 alt=" "')
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return ((n > 0) and html), nil
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end
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table.insert(pre_format_html_hooks, mangle_blank_alt)
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-- Fix unclosed INPUT tags.
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function mangle_unclosed_input_tags (url, html)
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local n
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html, n = gisub (html, '(<input[^>]-[^=]")<', '%1><')
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return ((n > 0) and html), nil
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end
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table.insert(pre_format_html_hooks, mangle_unclosed_input_tags)
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-- Fix unclosed A tags.
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function mangle_unclosed_a_tags (url, html)
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local n
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html, n = gisub (html, '(<a[^>]-[^=]")<', '%1><')
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return ((n > 0) and html), nil
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end
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table.insert(pre_format_html_hooks, mangle_unclosed_a_tags)
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function mangle_linuxtoday (url, html)
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if not sstrfind (url, "linuxtoday.com") then return nil,nil end
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if sstrfind (url, "news_story") then
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html = string.gsub (html, '<TABLE CELLSPACING="0".-</TABLE>', '', 1)
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html = string.gsub (html, '<TR BGCOLOR="#FFF.-</TR></TABLE>', '', 1)
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else
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html = string.gsub (html, 'WIDTH="120">\n<TR.+</TABLE></TD>', '>', 1)
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end
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html = string.gsub (html, '<A HREF="http://www.internet.com.-</A>', '')
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html = string.gsub (html, "<IFRAME.-</IFRAME>", "")
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-- emphasis in text is lost
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html = string.gsub (html, 'text="#002244"', 'text="#001133"', 1)
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return html,true
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end
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table.insert(pre_format_html_hooks, mangle_linuxtoday)
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function mangle_dictionary_dot_com (url, html)
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local t = { t = "" }
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local n
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|
|
|
if not sstrfind (url, "dictionary.com/cgi-bin/dict.pl") then return nil,nil end
|
|
|
|
_,n = string.gsub (html, "resultItemStart %-%-%>(.-)%<%!%-%- resultItemEnd",
|
|
function (x) t.t = t.t.."<tr><td>"..x.."</td></tr>" end)
|
|
if n == 0 then
|
|
-- we've already mangled this page before
|
|
return nil,true
|
|
end
|
|
|
|
html = "<html><head><title>Dictionary.com lookup</title></head>"..
|
|
"<body><table border=0 cellpadding=5>"..t.t.."</table>"..
|
|
"</body></html>"
|
|
|
|
return html,true
|
|
end
|
|
table.insert(pre_format_html_hooks, mangle_dictionary_dot_com)
|
|
|
|
|
|
function mangle_allmusic_dot_com (url, html)
|
|
if not sstrfind (url, "allmusic.com") then return nil,nil end
|
|
|
|
html = string.gsub(html, "javascript:z%('(.-)'%)", "/cg/amg.dll?p=amg&sql=%1")
|
|
|
|
return html,true
|
|
end
|
|
table.insert(pre_format_html_hooks, mangle_allmusic_dot_com)
|
|
|
|
|
|
-- Handle gzip'd files within reasonable size.
|
|
-- Note that this is not needed anymore since we have a support for this
|
|
-- in core ELinks. I still keep it here for a reference (as an example),
|
|
-- though. If you will add something similiar using pipe_read(), feel free
|
|
-- to remove this. --pasky
|
|
function decompress_html (url, html)
|
|
local tmp
|
|
|
|
if not string.find (url, "%.gz$") or string.len (html) >= 65536 then
|
|
return nil,nil
|
|
end
|
|
|
|
tmp = tmpname ()
|
|
writeto (tmp) write (html) writeto ()
|
|
html = pipe_read ("(gzip -dc "..tmp.." || cat "..tmp..") 2>/dev/null")
|
|
os.remove (tmp)
|
|
|
|
return html,nil
|
|
end
|
|
--table.insert(pre_format_html_hooks, decompress_html)
|
|
|
|
----------------------------------------------------------------------
|
|
-- Miscellaneous functions, accessed with the Lua Console.
|
|
----------------------------------------------------------------------
|
|
|
|
-- Reload this file (hooks.lua) from within Links.
|
|
function reload ()
|
|
dofile (hooks_file)
|
|
end
|
|
|
|
-- Helper function.
|
|
function catto (output)
|
|
local doc = current_document_formatted (79)
|
|
if doc then writeto (output) write (doc) writeto () end
|
|
end
|
|
|
|
-- Email the current document, using Mutt (http://www.mutt.org).
|
|
-- This only works when called from lua_console_hook, below.
|
|
function mutt ()
|
|
local tmp = tmpname ()
|
|
writeto (tmp) write (current_document ()) writeto ()
|
|
table.insert (tmp_files, tmp)
|
|
return "run", "mutt -a "..tmp
|
|
end
|
|
|
|
-- Table of expressions which are recognised by our lua_console_hook.
|
|
console_hook_functions = {
|
|
reload = "reload ()",
|
|
mutt = mutt,
|
|
}
|
|
|
|
function lua_console_hook (expr)
|
|
local x = console_hook_functions[expr]
|
|
if type (x) == "function" then
|
|
return x ()
|
|
else
|
|
return "eval", x or expr
|
|
end
|
|
end
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
-- quit_hook
|
|
----------------------------------------------------------------------
|
|
|
|
-- We need to delete the temporary files that we create.
|
|
if not tmp_files then
|
|
tmp_files = {}
|
|
end
|
|
|
|
function delete_tmp_files ()
|
|
if tmp_files and os.remove then
|
|
tmp_files.n = nil
|
|
for i,v in tmp_files do os.remove (v) end
|
|
end
|
|
end
|
|
table.insert(quit_hooks, delete_tmp_files)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
-- Examples of keybinding
|
|
----------------------------------------------------------------------
|
|
|
|
-- Bind Ctrl-H to a "Home" page.
|
|
|
|
-- bind_key ("main", "Ctrl-H",
|
|
-- function () return "goto_url", "http://www.google.com/" end)
|
|
|
|
-- Bind Alt-p to print.
|
|
|
|
-- bind_key ("main", "Alt-p", lpr)
|
|
|
|
-- Bind Alt-m to toggle ALT="" mangling.
|
|
|
|
bind_key ("main", "Alt-m",
|
|
function () mangle_blank_alt = not mangle_blank_alt end)
|
|
|
|
|
|
-- vim: shiftwidth=4 softtabstop=4
|