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#!/usr/bin/env texlua
--[===[--
whatsnew.lua -- Scan Context for changes in Lua libraries.
Part of the Lualibs package.
https://github.com/lualatex/lualibs
Copyright 2013 Philipp Gesang
License: GPL v2.0
--]===]--
-----------------------------------------------------------------------
--- configuration
-----------------------------------------------------------------------
local prefixsep = "-"
local namespace = "lualibs"
local luasuffix = ".lua"
local basedir = "/home/phg/context/tex/texmf-context/tex/context/base"
local cmd_diff = [[diff "%s" "%s"]]
-----------------------------------------------------------------------
--- locals
-----------------------------------------------------------------------
local iopopen = io.popen
local stringexplode = string.explode
local stringformat = string.format
local stringsub = string.sub
local tableunpack = table.unpack
-----------------------------------------------------------------------
--- files
-----------------------------------------------------------------------
--- (prefix, keep) hash_t
local namespaces = { { "l" , false },
{ "util" , true },
{ "trac" , true }, }
--- (prefix, name list) hash_t
local filenames = {
["l"] = {
"boolean",
"dir",
"file",
"function",
"io",
"lpeg",
"lua",
"math",
"md5",
"number",
"os",
"package",
"set",
"string",
"table",
"unicode",
"url",
},
["trac"] = { "inf" },
["util"] = {
"deb",
"dim",
"env",
"jsn",
"lua",
"prs",
"sta",
"sto",
"str",
"tab",
"tpl",
},
}
-----------------------------------------------------------------------
--- helpers
-----------------------------------------------------------------------
--- string -> string -> bool -> (string, string)
local mknames = function (pfx, name, keeppfx)
local libname = basedir .. "/" .. pfx
.. prefixsep .. name .. luasuffix
local ourname = prefixsep .. name .. luasuffix
if keeppfx == true then
ourname = prefixsep .. pfx .. ourname
end
ourname = namespace .. ourname
ourname = "./" .. ourname
return ourname, libname
end
--- string -> (int * int)
local count_changes = function (str)
local added, removed = 0, 0
for n, line in next, stringexplode(str, "\n") do
local first = stringsub(line, 1, 1)
if first == "<" then
removed = removed + 1
elseif first == ">" then
added = added + 1
end
end
return added, removed
end
--- string -> string -> (int * int)
local run_diff = function (f1, f2)
local cmd = stringformat(cmd_diff, f1, f2)
local res = iopopen(cmd, "r")
local dat = res:read"*all"
res:close()
return count_changes(dat)
end
-----------------------------------------------------------------------
--- main
-----------------------------------------------------------------------
local libs_done = 0
local total_added = 0
local total_removed = 0
for n, namespace in next, namespaces do
local pfx, keeppfx = tableunpack(namespace)
local libs = filenames[pfx]
for i=1, #libs do
libs_done = libs_done + 1
local current = libs[i]
local from, to = mknames(pfx, current, keeppfx)
if lfs.isfile(from) and lfs.isfile(to) then
local added, removed = run_diff (from, to)
if added > 0 or removed > 0 then
total_added = total_added + added
total_removed = total_removed + removed
print(stringformat(
"(library %q (plus %d) (minus %d))",
from, added, removed
))
end
else
if not lfs.isfile(from) then
print("cannot read file", from)
elseif not lfs.isfile(to) then
print("cannot read file", to)
end
goto fail
end
end
end
::done::
if total_added == 0 and total_removed == 0 then
print "stagnation"
else
print(stringformat(
"(progress (n-files %d) (added %d) (removed %d))",
libs_done, total_added, total_removed
))
end
os.exit(0)
::fail::
print "fatal error"
os.exit(1)
|
