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|
--- Module implementing the LuaRocks "doc" command.
-- Shows documentation for an installed rock.
--module("luarocks.doc", package.seeall)
local doc = {}
package.loaded["luarocks.doc"] = doc
local util = require("luarocks.util")
local show = require("luarocks.show")
local path = require("luarocks.path")
local dir = require("luarocks.dir")
local fetch = require("luarocks.fetch")
local fs = require("luarocks.fs")
local download = require("luarocks.download")
doc.help_summary = "Show documentation for an installed rock."
doc.help = [[
<argument> is an existing package name.
Without any flags, tries to load the documentation
using a series of heuristics.
With these flags, return only the desired information:
--home Open the home page of project.
--list List documentation files only.
For more information about a rock, see the 'show' command.
]]
local function show_homepage(homepage, name, version)
if not homepage then
return nil, "No 'homepage' field in rockspec for "..name.." "..version
end
util.printout("Opening "..homepage.." ...")
fs.browser(homepage)
return true
end
local function try_to_open_homepage(name, version)
local temp_dir, err = fs.make_temp_dir("doc-"..name.."-"..(version or ""))
if not temp_dir then
return nil, "Failed creating temporary directory: "..err
end
util.schedule_function(fs.delete, temp_dir)
local ok, err = fs.change_dir(temp_dir)
if not ok then return nil, err end
local filename, err = download.download("rockspec", name, version)
if not filename then return nil, err end
local rockspec, err = fetch.load_local_rockspec(filename)
if not rockspec then return nil, err end
fs.pop_dir()
local descript = rockspec.description or {}
if not descript.homepage then return nil, "No homepage defined for "..name end
return show_homepage(descript.homepage, name, version)
end
--- Driver function for "doc" command.
-- @param name or nil: an existing package name.
-- @param version string or nil: a version may also be passed.
-- @return boolean: True if succeeded, nil on errors.
function doc.run(...)
local flags, name, version = util.parse_flags(...)
if not name then
return nil, "Argument missing. "..util.see_help("doc")
end
local iname, iversion, repo = show.pick_installed_rock(name, version, flags["tree"])
if not iname then
util.printout(name..(version and " "..version or "").." is not installed. Looking for it in the rocks servers...")
return try_to_open_homepage(name, version)
end
name, version = iname, iversion
local rockspec, err = fetch.load_local_rockspec(path.rockspec_file(name, version, repo))
if not rockspec then return nil,err end
local descript = rockspec.description or {}
if flags["home"] then
return show_homepage(descript.homepage, name, version)
end
local directory = path.install_dir(name,version,repo)
local docdir
local directories = { "doc", "docs" }
for _, d in ipairs(directories) do
local dirname = dir.path(directory, d)
if fs.is_dir(dirname) then
docdir = dirname
break
end
end
if not docdir then
if descript.homepage and not flags["list"] then
util.printout("Local documentation directory not found -- opening "..descript.homepage.." ...")
fs.browser(descript.homepage)
return true
end
return nil, "Documentation directory not found for "..name.." "..version
end
docdir = dir.normalize(docdir):gsub("/+", "/")
local files = fs.find(docdir)
local htmlpatt = "%.html?$"
local extensions = { htmlpatt, "%.md$", "%.txt$", "%.textile$", "" }
local basenames = { "index", "readme", "manual" }
local porcelain = flags["porcelain"]
if #files > 0 then
util.title("Documentation files for "..name.." "..version, porcelain)
if porcelain then
for _, file in ipairs(files) do
util.printout(docdir.."/"..file)
end
else
util.printout(docdir.."/")
for _, file in ipairs(files) do
util.printout("\t"..file)
end
end
end
if flags["list"] then
return true
end
for _, extension in ipairs(extensions) do
for _, basename in ipairs(basenames) do
local filename = basename..extension
local found
for _, file in ipairs(files) do
if file:lower():match(filename) and ((not found) or #file < #found) then
found = file
end
end
if found then
local pathname = dir.path(docdir, found)
util.printout()
util.printout("Opening "..pathname.." ...")
util.printout()
local ok = fs.browser(pathname)
if not ok and not pathname:match(htmlpatt) then
local fd = io.open(pathname, "r")
util.printout(fd:read("*a"))
fd:close()
end
return true
end
end
end
return true
end
return doc
|
