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| -rw-r--r-- | whatsnew.lua | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/whatsnew.lua b/whatsnew.lua new file mode 100644 index 0000000..30cf837 --- /dev/null +++ b/whatsnew.lua @@ -0,0 +1,171 @@ +#!/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) + |