794 lines
23 KiB
Lua
794 lines
23 KiB
Lua
#!/usr/bin/env lua
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---------------
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-- ## ldoc, a Lua documentation generator.
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--
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-- Compatible with luadoc-style annotations, but providing
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-- easier customization options.
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--
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-- C/C++ support for Lua extensions is provided.
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--
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-- Available from LuaRocks as 'ldoc' and as a [Zip file](http://stevedonovan.github.com/files/ldoc-1.4.3.zip)
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--
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-- [Github Page](https://github.com/stevedonovan/ldoc)
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--
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-- @author Steve Donovan
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-- @copyright 2011
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-- @license MIT/X11
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-- @script ldoc
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local class = require 'pl.class'
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local app = require 'pl.app'
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local path = require 'pl.path'
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local dir = require 'pl.dir'
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local utils = require 'pl.utils'
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local List = require 'pl.List'
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local stringx = require 'pl.stringx'
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local tablex = require 'pl.tablex'
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-- Penlight compatibility
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utils.unpack = utils.unpack or unpack or table.unpack
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local append = table.insert
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local lapp = require 'pl.lapp'
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-- so we can find our private modules
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app.require_here()
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--- @usage
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local usage = [[
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ldoc, a documentation generator for Lua, vs 1.4.3
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-d,--dir (default doc) output directory
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-o,--output (default 'index') output name
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-v,--verbose verbose
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-a,--all show local functions, etc, in docs
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-q,--quiet suppress output
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-m,--module module docs as text
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-s,--style (default !) directory for style sheet (ldoc.css)
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-l,--template (default !) directory for template (ldoc.ltp)
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-p,--project (default ldoc) project name
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-t,--title (default Reference) page title
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-f,--format (default plain) formatting - can be markdown, discount or plain
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-b,--package (default .) top-level package basename (needed for module(...))
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-x,--ext (default html) output file extension
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-c,--config (default config.ld) configuration name
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-u,--unqualified don't show package name in sidebar links
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-i,--ignore ignore any 'no doc comment or no module' warnings
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-X,--not_luadoc break LuaDoc compatibility. Descriptions may continue after tags.
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-D,--define (default none) set a flag to be used in config.ld
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-C,--colon use colon style
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-B,--boilerplate ignore first comment in source files
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-M,--merge allow module merging
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-S,--simple no return or params, no summary
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-O,--one one-column output layout
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--dump debug output dump
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--filter (default none) filter output as Lua data (e.g pl.pretty.dump)
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--tags (default none) show all references to given tags, comma-separated
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<file> (string) source file or directory containing source
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`ldoc .` reads options from an `config.ld` file in same directory;
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`ldoc -c path/to/myconfig.ld <file>` reads options from `path/to/myconfig.ld`
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and processes <file> if 'file' was not defined in the ld file.
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]]
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local args = lapp(usage)
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local lfs = require 'lfs'
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local doc = require 'ldoc.doc'
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local lang = require 'ldoc.lang'
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local tools = require 'ldoc.tools'
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local global = require 'ldoc.builtin.globals'
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local markup = require 'ldoc.markup'
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local parse = require 'ldoc.parse'
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local KindMap = tools.KindMap
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local Item,File,Module = doc.Item,doc.File,doc.Module
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local quit = utils.quit
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local ModuleMap = class(KindMap)
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doc.ModuleMap = ModuleMap
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function ModuleMap:_init ()
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self.klass = ModuleMap
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self.fieldname = 'section'
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end
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local ProjectMap = class(KindMap)
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ProjectMap.project_level = true
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function ProjectMap:_init ()
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self.klass = ProjectMap
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self.fieldname = 'type'
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end
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local lua, cc = lang.lua, lang.cc
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local file_types = {
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['.lua'] = lua,
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['.ldoc'] = lua,
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['.luadoc'] = lua,
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['.c'] = cc,
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['.h'] = cc,
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['.cpp'] = cc,
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['.cxx'] = cc,
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['.C'] = cc,
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['.mm'] = cc,
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['.moon'] = lang.moon,
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}
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------- ldoc external API ------------
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-- the ldoc table represents the API available in `config.ld`.
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local ldoc = { charset = 'UTF-8' }
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local known_types, kind_names = {}
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local function lookup (itype,igroup,isubgroup)
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local kn = kind_names[itype]
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known_types[itype] = true
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if kn then
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if type(kn) == 'string' then
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igroup = kn
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else
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igroup = kn[1]
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isubgroup = kn[2]
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end
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end
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return itype, igroup, isubgroup
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end
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local function setup_kinds ()
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kind_names = ldoc.kind_names or {}
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ModuleMap:add_kind(lookup('function','Functions','Parameters'))
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ModuleMap:add_kind(lookup('table','Tables','Fields'))
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ModuleMap:add_kind(lookup('field','Fields'))
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ModuleMap:add_kind(lookup('lfunction','Local Functions','Parameters'))
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ModuleMap:add_kind(lookup('annotation','Issues'))
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ProjectMap:add_kind(lookup('module','Modules'))
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ProjectMap:add_kind(lookup('script','Scripts'))
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ProjectMap:add_kind(lookup('classmod','Classes'))
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ProjectMap:add_kind(lookup('topic','Topics'))
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ProjectMap:add_kind(lookup('example','Examples'))
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ProjectMap:add_kind(lookup('file','Source'))
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for k in pairs(kind_names) do
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if not known_types[k] then
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quit("unknown item type "..tools.quote(k).." in kind_names")
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end
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end
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end
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local add_language_extension
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-- hacky way for doc module to be passed options...
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doc.ldoc = ldoc
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-- if the corresponding argument was the default, then any ldoc field overrides
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local function override (field,defval)
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defval = defval or false
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if args[field] == defval and ldoc[field] ~= nil then args[field] = ldoc[field] end
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end
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-- aliases to existing tags can be defined. E.g. just 'p' for 'param'
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function ldoc.alias (a,tag)
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doc.add_alias(a,tag)
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end
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-- standard aliases --
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ldoc.alias('tparam',{'param',modifiers={type="$1"}})
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ldoc.alias('treturn',{'return',modifiers={type="$1"}})
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ldoc.alias('tfield',{'field',modifiers={type="$1"}})
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function ldoc.tparam_alias (name,type)
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type = type or name
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ldoc.alias(name,{'param',modifiers={type=type}})
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end
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ldoc.alias ('error',doc.error_macro)
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ldoc.tparam_alias 'string'
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ldoc.tparam_alias 'number'
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ldoc.tparam_alias 'int'
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ldoc.tparam_alias 'bool'
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ldoc.tparam_alias 'func'
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ldoc.tparam_alias 'tab'
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ldoc.tparam_alias 'thread'
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function ldoc.add_language_extension(ext, lang)
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lang = (lang=='c' and cc) or (lang=='lua' and lua) or quit('unknown language')
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if ext:sub(1,1) ~= '.' then ext = '.'..ext end
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file_types[ext] = lang
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end
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function ldoc.add_section (name, title, subname)
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ModuleMap:add_kind(name,title,subname)
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end
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-- new tags can be added, which can be on a project level.
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function ldoc.new_type (tag, header, project_level,subfield)
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doc.add_tag(tag,doc.TAG_TYPE,project_level)
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if project_level then
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ProjectMap:add_kind(tag,header,subfield)
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else
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ModuleMap:add_kind(tag,header,subfield)
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end
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end
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function ldoc.manual_url (url)
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global.set_manual_url(url)
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end
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function ldoc.custom_see_handler(pat, handler)
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doc.add_custom_see_handler(pat, handler)
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end
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local ldoc_contents = {
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'alias','add_language_extension','custom_tags','new_type','add_section', 'tparam_alias',
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'file','project','title','package','format','output','dir','ext', 'topics',
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'one','style','template','description','examples', 'pretty', 'charset', 'plain',
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'readme','all','manual_url', 'ignore', 'colon', 'sort', 'module_file','vars',
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'boilerplate','merge', 'wrap', 'not_luadoc', 'template_escape','merge_error_groups',
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'no_return_or_parms','no_summary','full_description','backtick_references', 'custom_see_handler',
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'no_space_before_args','parse_extra','no_lua_ref','sort_modules','use_markdown_titles',
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'unqualified', 'custom_display_name_handler', 'kind_names', 'custom_references',
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'dont_escape_underscore','global_lookup','prettify_files','convert_opt', 'user_keywords',
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}
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ldoc_contents = tablex.makeset(ldoc_contents)
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local function loadstr (ldoc,txt)
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local chunk, err
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local load
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-- Penlight's Lua 5.2 compatibility has wobbled over the years...
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if not rawget(_G,'loadin') then -- Penlight 0.9.5
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-- Penlight 0.9.7; no more global load() override
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load = load or utils.load
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chunk,err = load(txt,'config',nil,ldoc)
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else
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chunk,err = loadin(ldoc,txt)
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end
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return chunk, err
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end
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-- any file called 'config.ld' found in the source tree will be
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-- handled specially. It will be loaded using 'ldoc' as the environment.
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local function read_ldoc_config (fname)
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local directory = path.dirname(fname)
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if directory == '' then
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directory = '.'
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end
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local chunk, err, ok
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if args.filter == 'none' then
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print('reading configuration from '..fname)
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end
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local txt,not_found = utils.readfile(fname)
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if txt then
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chunk, err = loadstr(ldoc,txt)
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if chunk then
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if args.define ~= 'none' then ldoc[args.define] = true end
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ok,err = pcall(chunk)
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end
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end
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if err then quit('error loading config file '..fname..': '..err) end
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for k in pairs(ldoc) do
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if not ldoc_contents[k] then
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quit("this config file field/function is unrecognized: "..k)
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end
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end
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return directory, not_found
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end
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local quote = tools.quote
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--- processing command line and preparing for output ---
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local F
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local file_list = List()
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File.list = file_list
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local config_dir
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local ldoc_dir = arg[0]:gsub('[^/\\]+$','')
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local doc_path = ldoc_dir..'/ldoc/builtin/?.lua'
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-- ldoc -m is expecting a Lua package; this converts this to a file path
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if args.module then
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-- first check if we've been given a global Lua lib function
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if args.file:match '^%a+$' and global.functions[args.file] then
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args.file = 'global.'..args.file
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end
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local fullpath,mod,on_docpath = tools.lookup_existing_module_or_function (args.file, doc_path)
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if not fullpath then
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quit(mod)
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else
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args.file = fullpath
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args.module = mod
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end
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end
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local abspath = tools.abspath
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-- a special case: 'ldoc .' can get all its parameters from config.ld
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if args.file == '.' then
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local err
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config_dir,err = read_ldoc_config(args.config)
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if err then quit("no "..quote(args.config).." found") end
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local config_path = path.dirname(args.config)
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if config_path ~= '' then
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print('changing to directory',config_path)
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lfs.chdir(config_path)
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end
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config_is_read = true
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args.file = ldoc.file or '.'
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if args.file == '.' then
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args.file = lfs.currentdir()
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elseif type(args.file) == 'table' then
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for i,f in ipairs(args.file) do
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args.file[i] = abspath(f)
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end
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else
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args.file = abspath(args.file)
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end
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else
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-- user-provided config file
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if args.config ~= 'config.ld' then
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local err
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config_dir,err = read_ldoc_config(args.config)
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if err then quit("no "..quote(args.config).." found") end
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end
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-- with user-provided file
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args.file = abspath(args.file)
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end
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if type(ldoc.custom_tags) == 'table' then -- custom tags
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for i, custom in ipairs(ldoc.custom_tags) do
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if type(custom) == 'string' then
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custom = {custom}
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ldoc.custom_tags[i] = custom
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end
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doc.add_tag(custom[1], 'ML')
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end
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end -- custom tags
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local source_dir = args.file
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if type(source_dir) == 'table' then
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source_dir = source_dir[1]
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end
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if type(source_dir) == 'string' and path.isfile(source_dir) then
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source_dir = path.splitpath(source_dir)
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end
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source_dir = source_dir:gsub('[/\\]%.$','')
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---------- specifying the package for inferring module names --------
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-- If you use module(...), or forget to explicitly use @module, then
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-- ldoc has to infer the module name. There are three sensible values for
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-- `args.package`:
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--
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-- * '.' the actual source is in an immediate subdir of the path given
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-- * '..' the path given points to the source directory
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-- * 'NAME' explicitly give the base module package name
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--
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override ('package','.')
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local function setup_package_base()
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if ldoc.package then args.package = ldoc.package end
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if args.package == '.' then
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args.package = source_dir
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elseif args.package == '..' then
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args.package = path.splitpath(source_dir)
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elseif not args.package:find '[\\/]' then
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local subdir,dir = path.splitpath(source_dir)
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if dir == args.package then
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args.package = subdir
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elseif path.isdir(path.join(source_dir,args.package)) then
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args.package = source_dir
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else
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quit("args.package is not the name of the source directory")
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end
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end
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end
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--------- processing files ---------------------
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-- ldoc may be given a file, or a directory. `args.file` may also be specified in config.ld
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-- where it is a list of files or directories. If specified on the command-line, we have
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-- to find an optional associated config.ld, if not already loaded.
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if ldoc.ignore then args.ignore = true end
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local function process_file (f, flist)
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local ext = path.extension(f)
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local ftype = file_types[ext]
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if ftype then
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if args.verbose then print(f) end
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ftype.extra = ldoc.parse_extra or {}
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local F,err = parse.file(f,ftype,args)
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if err then
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if F then
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F:warning("internal LDoc error")
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end
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quit(err)
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end
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flist:append(F)
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end
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end
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local process_file_list = tools.process_file_list
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setup_package_base()
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override 'colon'
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override 'merge'
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override 'not_luadoc'
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override 'module_file'
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override 'boilerplate'
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override 'all'
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setup_kinds()
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-- LDoc is doing plain ole C, don't want random Lua references!
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if ldoc.parse_extra and ldoc.parse_extra.C then
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ldoc.no_lua_ref = true
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end
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if ldoc.merge_error_groups == nil then
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ldoc.merge_error_groups = 'Error Message'
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end
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-- ldoc.module_file establishes a partial ordering where the
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-- master module files are processed first.
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local function reorder_module_file ()
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if args.module_file then
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local mf = {}
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for mname, f in pairs(args.module_file) do
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local fullpath = abspath(f)
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mf[fullpath] = true
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end
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return function(x,y)
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return mf[x] and not mf[y]
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end
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end
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end
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-- process files, optionally in order that respects master module files
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local function process_all_files(files)
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local sortfn = reorder_module_file()
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local files = tools.expand_file_list(files,'*.*')
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if sortfn then files:sort(sortfn) end
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for f in files:iter() do
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process_file(f, file_list)
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end
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if #file_list == 0 then quit "no source files found" end
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end
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if type(args.file) == 'table' then
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-- this can only be set from config file so we can assume config is already read
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process_all_files(args.file)
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elseif path.isdir(args.file) then
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-- use any configuration file we find, if not already specified
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if not config_dir then
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local files = List(dir.getallfiles(args.file,'*.*'))
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local config_files = files:filter(function(f)
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return path.basename(f) == args.config
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end)
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if #config_files > 0 then
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config_dir = read_ldoc_config(config_files[1])
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if #config_files > 1 then
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print('warning: other config files found: '..config_files[2])
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end
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end
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end
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process_all_files({args.file})
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elseif path.isfile(args.file) then
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-- a single file may be accompanied by a config.ld in the same dir
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if not config_dir then
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config_dir = path.dirname(args.file)
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if config_dir == '' then config_dir = '.' end
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local config = path.join(config_dir,args.config)
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if path.isfile(config) then
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read_ldoc_config(config)
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end
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end
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process_file(args.file, file_list)
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if #file_list == 0 then quit "unsupported file extension" end
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else
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quit ("file or directory does not exist: "..quote(args.file))
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end
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-- create the function that renders text (descriptions and summaries)
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-- (this also will initialize the code prettifier used)
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override ('format','plain')
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override 'pretty'
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ldoc.markup = markup.create(ldoc, args.format, args.pretty, ldoc.user_keywords)
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------ 'Special' Project-level entities ---------------------------------------
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-- Examples and Topics do not contain code to be processed for doc comments.
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-- Instead, they are intended to be rendered nicely as-is, whether as pretty-lua
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-- or as Markdown text. Treating them as 'modules' does stretch the meaning of
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-- of the term, but allows them to be treated much as modules or scripts.
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-- They define an item 'body' field (containing the file's text) and a 'postprocess'
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-- field which is used later to convert them into HTML. They may contain @{ref}s.
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local function add_special_project_entity (f,tags,process)
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local F = File(f)
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tags.name = path.basename(f)
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local text = utils.readfile(f)
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local item = F:new_item(tags,1)
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if process then
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text = process(F, text)
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end
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F:finish()
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file_list:append(F)
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item.body = text
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return item, F
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end
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local function prettify_source_files(files,class,linemap)
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local prettify = require 'ldoc.prettify'
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process_file_list (files, '*.*', function(f)
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local ext = path.extension(f)
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local ftype = file_types[ext]
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if ftype then
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local item = add_special_project_entity(f,{
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class = class,
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})
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-- wrap prettify for this example so it knows which file to blame
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-- if there's a problem
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local lang = ext:sub(2)
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item.postprocess = function(code)
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return '<h2>'..path.basename(f)..'</h2>\n' ..
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prettify.lua(lang,f,code,0,true,linemap and linemap[f])
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end
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end
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end)
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end
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if type(ldoc.examples) == 'string' then
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ldoc.examples = {ldoc.examples}
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end
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if type(ldoc.examples) == 'table' then
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prettify_source_files(ldoc.examples,"example")
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end
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if ldoc.prettify_files then
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local files = List()
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local linemap = {}
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for F in file_list:iter() do
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files:append(F.filename)
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local mod = F.modules[1]
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local ls = List()
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for item in mod.items:iter() do
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ls:append(item.lineno)
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end
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linemap[F.filename] = ls
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end
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prettify_source_files(files,"file",linemap)
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end
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if args.simple then
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ldoc.no_return_or_parms=true
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ldoc.no_summary=true
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end
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ldoc.readme = ldoc.readme or ldoc.topics
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if type(ldoc.readme) == 'string' then
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ldoc.readme = {ldoc.readme}
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end
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if type(ldoc.readme) == 'table' then
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process_file_list(ldoc.readme, '*.md', function(f)
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local item, F = add_special_project_entity(f,{
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class = 'topic'
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}, markup.add_sections)
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-- add_sections above has created sections corresponding to the 2nd level
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-- headers in the readme, which are attached to the File. So
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-- we pass the File to the postprocesser, which will insert the section markers
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-- and resolve inline @ references.
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if ldoc.use_markdown_titles then
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item.display_name = F.display_name
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end
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item.postprocess = function(txt) return ldoc.markup(txt,F) end
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end)
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end
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-- extract modules from the file objects, resolve references and sort appropriately ---
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local first_module
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local project = ProjectMap()
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local module_list = List()
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module_list.by_name = {}
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local modcount = 0
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for F in file_list:iter() do
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for mod in F.modules:iter() do
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if not first_module then first_module = mod end
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if doc.code_tag(mod.type) then modcount = modcount + 1 end
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module_list:append(mod)
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module_list.by_name[mod.name] = mod
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end
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end
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for mod in module_list:iter() do
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if not args.module then -- no point if we're just showing docs on the console
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mod:resolve_references(module_list)
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end
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project:add(mod,module_list)
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end
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if ldoc.sort_modules then
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table.sort(module_list,function(m1,m2)
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return m1.name < m2.name
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end)
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end
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ldoc.single = modcount == 1 and first_module or nil
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--do return end
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-------- three ways to dump the object graph after processing -----
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-- ldoc -m will give a quick & dirty dump of the module's documentation;
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-- using -v will make it more verbose
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if args.module then
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if #module_list == 0 then quit("no modules found") end
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if args.module == true then
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file_list[1]:dump(args.verbose)
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else
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local M,name = module_list[1], args.module
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local fun = M.items.by_name[name]
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if not fun then
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fun = M.items.by_name[M.mod_name..':'..name]
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end
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if not fun then quit(quote(name).." is not part of "..quote(args.file)) end
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fun:dump(true)
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end
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return
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end
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-- ldoc --dump will do the same as -m, except for the currently specified files
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if args.dump then
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for mod in module_list:iter() do
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mod:dump(true)
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end
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os.exit()
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end
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if args.tags ~= 'none' then
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local tagset = {}
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for t in stringx.split(args.tags,','):iter() do
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tagset[t] = true
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end
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for mod in module_list:iter() do
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mod:dump_tags(tagset)
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end
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os.exit()
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end
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-- ldoc --filter mod.name will load the module `mod` and pass the object graph
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-- to the function `name`. As a special case --filter dump will use pl.pretty.dump.
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if args.filter ~= 'none' then
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doc.filter_objects_through_function(args.filter, module_list)
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os.exit()
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end
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-- can specify format, output, dir and ext in config.ld
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override ('output','index')
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override ('dir','doc')
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override ('ext','html')
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override 'one'
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-- handling styling and templates --
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ldoc.css, ldoc.templ = 'ldoc.css','ldoc.ltp'
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-- special case: user wants to generate a .md file from a .lua file
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if args.ext == 'md' then
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if #module_list ~= 1 then
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quit("can currently only generate Markdown output from one module only")
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end
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if ldoc.template == '!' then
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ldoc.template = '!md'
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end
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args.output = module_list[1].name
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args.dir = '.'
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ldoc.template_escape = '>'
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ldoc.style = false
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args.ext = '.md'
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end
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local function match_bang (s)
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if type(s) ~= 'string' then return end
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return s:match '^!(.*)'
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end
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local function style_dir (sname)
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local style = ldoc[sname]
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local dir
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if style==false and sname == 'style' then
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args.style = false
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ldoc.css = false
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end
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if style then
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if style == true then
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dir = config_dir
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elseif type(style) == 'string' and (path.isdir(style) or match_bang(style)) then
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dir = style
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else
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quit(quote(tostring(style)).." is not a directory")
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end
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args[sname] = dir
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end
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end
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-- the directories for template and stylesheet can be specified
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-- either by command-line '--template','--style' arguments or by 'template and
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-- 'style' fields in config.ld.
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-- The assumption here is that if these variables are simply true then the directory
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-- containing config.ld contains a ldoc.css and a ldoc.ltp respectively. Otherwise
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-- they must be a valid subdirectory.
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style_dir 'style'
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style_dir 'template'
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if not args.ext:find '^%.' then
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args.ext = '.'..args.ext
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end
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if args.one then
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ldoc.style = '!one'
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end
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local builtin_style, builtin_template = match_bang(args.style),match_bang(args.template)
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if builtin_style or builtin_template then
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-- '!' here means 'use built-in templates'
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local tmpdir = path.join(path.is_windows and os.getenv('TMP') or '/tmp','ldoc')
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if not path.isdir(tmpdir) then
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lfs.mkdir(tmpdir)
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end
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local function tmpwrite (name)
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local ok,text = pcall(require,'ldoc.html.'..name:gsub('%.','_'))
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if not ok then
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quit("cannot find builtin template "..name)
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end
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if not utils.writefile(path.join(tmpdir,name),text) then
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quit("cannot write to temp directory "..tmpdir)
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end
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end
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if builtin_style then
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if builtin_style ~= '' then
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ldoc.css = 'ldoc_'..builtin_style..'.css'
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end
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tmpwrite(ldoc.css)
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args.style = tmpdir
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end
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if builtin_template then
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if builtin_template ~= '' then
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ldoc.templ = 'ldoc_'..builtin_template..'.ltp'
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end
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tmpwrite(ldoc.templ)
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args.template = tmpdir
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end
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end
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ldoc.log = print
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ldoc.kinds = project
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ldoc.modules = module_list
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ldoc.title = ldoc.title or args.title
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ldoc.project = ldoc.project or args.project
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ldoc.package = args.package:match '%a+' and args.package or nil
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ldoc.updatetime = os.date("%Y-%m-%d %H:%M:%S")
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local html = require 'ldoc.html'
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html.generate_output(ldoc, args, project)
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if args.verbose then
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print 'modules'
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for k in pairs(module_list.by_name) do print(k) end
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end
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