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Diffstat (limited to 'tex/context/base/trac-lmx.lua')
| -rw-r--r-- | tex/context/base/trac-lmx.lua | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/tex/context/base/trac-lmx.lua b/tex/context/base/trac-lmx.lua new file mode 100644 index 000000000..664815c66 --- /dev/null +++ b/tex/context/base/trac-lmx.lua @@ -0,0 +1,223 @@ +if not modules then modules = { } end modules ['trac-lmx'] = { + version = 1.002, + comment = "companion to trac-lmx.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- todo: use lpeg instead (although not really needed) + +local gsub, format, concat, byte = string.gsub, string.format, table.concat, string.byte + +lmx = lmx or { } + +local escapes = { + ['&'] = '&', + ['<'] = '<', + ['>'] = '>', + ['"'] = '"' +} + +-- variables + +lmx.variables = { } -- global, shared + +local lmxvariables = lmx.variables + +lmxvariables['title-default'] = 'ConTeXt LMX File' +lmxvariables['title'] = lmx.variables['title-default'] +lmxvariables['color-background-green'] = '#4F6F6F' +lmxvariables['color-background-blue'] = '#6F6F8F' +lmxvariables['color-background-yellow'] = '#8F8F6F' +lmxvariables['color-background-purple'] = '#8F6F8F' +lmxvariables['color-background-body'] = '#808080' +lmxvariables['color-background-main'] = '#3F3F3F' +lmxvariables['color-background-one'] = lmxvariables['color-background-green'] +lmxvariables['color-background-two'] = lmxvariables['color-background-blue'] + +function lmx.set(key, value) + lmxvariables[key] = value +end + +function lmx.get(key) + return lmxvariables[key] or "" +end + +-- helpers + +local variables, result = { } -- we assume no nesting + +local function do_print(one,two,...) + if two then + result[#result+1] = concat { one, two, ... } + else + result[#result+1] = one + end +end + +local function do_escape(str) + str = tostring(str) + str = gsub(str,'&','&') + str = gsub(str,'[<>"]',escapes) + return str +end + +local function do_urlescaped(str) + return (gsub(str,"[^%a%d]",format("%%0x",byte("%1")))) +end + +function do_type(str) + if str then do_print("<tt>" .. do_escape(str) .. "</tt>") end +end + +local function do_variable(str) + return variables[str] or lmxvariables[str] -- or format("<!-- unset lmx instance variable: %s -->",str or "?") +end + +function lmx.loadedfile(name) + name = (resolvers and resolvers.find_file and resolvers.find_file(name)) or name + return io.loaddata(name) +end + +local function do_include(filename) + local stylepath = do_variable('includepath') + local data = lmx.loadedfile(filename) + if (not data or data == "") and stylepath ~= "" then + data = lmx.loadedfile(file.join(stylepath,filename)) + end + if not data or data == "" then + data = format("<!-- unknown lmx include file: %s -->",filename) + end + return data +end + +lmx.print = do_print +lmx.type = do_type +lmx.escape = do_escape +lmx.urlescape = do_escape +lmx.variable = do_variable +lmx.include = do_include + +function lmx.pv(str) + do_print(do_variable(str) or "") +end + +function lmx.tv(str) + lmx.type(do_variable(str) or "") +end + +local template = [[ + local definitions = { } + local p, v, e, t, pv, tv = lmx.print, lmx.variable, lmx.escape, lmx.type, lmx.pv, lmx.tv + %s +]] + +local cache = { } + +local trace = false + +function lmx.new(data,variables) + data = data or "" + local known = cache[data] + if not known then + local definitions = { } + data = gsub(data,"<%?lmx%-include%s+(.-)%s-%?>", function(filename) + return lmx.include(filename) + end) + local definitions = { } + data = gsub(data,"<%?lmx%-define%-begin%s+(%S-)%s-%?>(.-)<%?lmx%-define%-end%s-%?>", function(tag,content) + definitions[tag] = content + return "" + end) + data = gsub(data,"<%?lmx%-resolve%s+(%S-)%s-%?>", function(tag) + return definitions[tag] or "" + end) + data = gsub(data .. "<?lua ?>","(.-)<%?lua%s+(.-)%s*%?>", function(txt,lua) + txt = gsub(txt,"%c+","\n") + return format("p(%q)%s ",txt,lua) -- nb! space + end) + data = format(template,data) + known = { + data = trace and data, + variables = variables or { }, + converter = loadstring(data), + } + elseif variables then + known.variables = variables + end + return known, known.variables +end + +function lmx.reset(self) + self.variables = { } +end + +function lmx.result(self) + if trace then + return self.data + else + variables, result = self.variables, { } + self.converter() + return concat(result) + end +end + +-- file converter + +local loaded = { } + +function lmx.convert(templatefile,resultfile,variables) + local data = loaded[templatefile] + if not data then + data = lmx.new(lmx.loadedfile(templatefile),variables) + loaded[template] = data + elseif variables then + data.variables = variables + end + local result = lmx.result(data) + if resultfile then + io.savedata(resultfile,result) + else + return lmx.result(data,result) + end +end + +-- these can be overloaded; we assume that the os handles filename associations + +lmx.lmxfile = function(filename) return filename end -- beware, these can be set! +lmx.htmfile = function(filename) return filename end -- beware, these can be set! + +if os.type == "windows" then + lmx.popupfile = function(filename) os.execute("start " .. filename) end +else + lmx.popupfile = function(filename) os.execute(filename) end +end + +function lmx.make(name,variables) + local lmxfile = lmx.lmxfile(name) + local htmfile = lmx.htmfile(name) + if lmxfile == htmfile then + htmfile = gsub(lmxfile, "%.%a+$", "html") + end + lmx.convert(lmxfile,htmfile,variables) + return htmfile +end + +function lmx.show(name,variables) + local htmfile = lmx.make(name,variables) + lmx.popupfile(htmfile) + return htmfile +end + +-- test + +--~ print(lmx.result(lmx.new(io.loaddata("t:/sources/context-timing.lmx")))) + +-- command line + +if arg then + if arg[1] == "--show" then if arg[2] then lmx.show (arg[2]) end + elseif arg[1] == "--convert" then if arg[2] then lmx.convert(arg[2], arg[3] or "temp.html") end + end +end |