summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/core-uti.lua
blob: 96ccdca4809cd0fa0c1078652acde37dbf54d17b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
if not modules then modules = { } end modules ['core-uti'] = {
    version   = 1.001,
    comment   = "companion to core-uti.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

-- todo: keep track of changes here (hm, track access, and only true when
-- accessed and changed)

--[[ldx--
<p>A utility file has always been part of <l n='context'/> and with
the move to <l n='luatex'/> we also moved a lot of multi-pass info
to a <l n='lua'/> table. Instead of loading a <l n='tex'/> based
utility file under different setups, we now load a table once. This
saves much runtime but at the cost of more memory usage.</p>
--ldx]]--

local format, match = string.format, string.match
local next, type, tostring = next, type, tostring
local concat = table.concat
local texcount = tex.count

local definetable   = utilities.tables.definetable
local accesstable   = utilities.tables.accesstable
local migratetable  = utilities.tables.migratetable
local serialize     = table.serialize
local packers       = utilities.packers
local allocate      = utilities.storage.allocate
local mark          = utilities.storage.mark

local report_passes = logs.reporter("job","passes")

job                 = job or { }
local job           = job

job.version         = 1.22 -- make sure we don't have old lua 5.1 hash leftovers
job.packversion     = 1.02 -- make sure we don't have old lua 5.1 hash leftovers

-- some day we will implement loading of other jobs and then we need
-- job.jobs

--[[ldx--
<p>Variables are saved using in the previously defined table and passed
onto <l n='tex'/> using the following method. Of course one can also
directly access the variable using a <l n='lua'/> call.</p>
--ldx]]--

local savelist, comment = { }, { }

function job.comment(key,value)
    comment[key] = value
end

job.comment("version",job.version)

local enabled = true

directives.register("job.save",function(v) enabled = v end)

function job.disablesave() -- can be command
    enabled = false
end

function job.initialize(loadname,savename)
    job.load(loadname) -- has to come after  structure is defined !
    luatex.registerstopactions(function()
        if enabled and not status.lasterrorstring or status.lasterrorstring == "" then
            job.save(savename)
        end
    end)
end

function job.register(collected, tobesaved, initializer, finalizer)
    savelist[#savelist+1] = { collected, tobesaved, initializer, finalizer }
end

-- as an example we implement variables

local tobesaved, collected, checksums = allocate(), allocate(), allocate()

local jobvariables = {
    collected = collected,
    tobesaved = tobesaved,
    checksums = checksums,
}

job.variables = jobvariables

if not checksums.old then checksums.old = md5.HEX("old") end -- used in experiment
if not checksums.new then checksums.new = md5.HEX("new") end -- used in experiment

job.register('job.variables.checksums', checksums)

local rmethod, rvalue

local function initializer()
    tobesaved = jobvariables.tobesaved
    collected = jobvariables.collected
    checksums = jobvariables.checksums
    rvalue = collected.randomseed
    if not rvalue then
        rvalue = math.random()
        math.setrandomseedi(rvalue,"initialize")
        rmethod = "initialized"
    else
        math.setrandomseedi(rvalue,"previous run")
        rmethod = "resumed"
    end
    tobesaved.randomseed = rvalue
    for cs, value in next, collected do
        context.setxvalue(cs,value)
    end
end

job.register('job.variables.collected', tobesaved, initializer)

function jobvariables.save(cs,value)
    tobesaved[cs] = value
end

local packlist = {
    "numbers",
    "metadata",
    "sectiondata",
    "prefixdata",
    "numberdata",
    "pagedata",
    "directives",
    "specification",
    "processors", -- might become key under directives or metadata
--  "references", -- we need to rename of them as only one packs (not structures.lists.references)
}

local jobpacker = packers.new(packlist,job.packversion) -- jump number when changs in hash

job.pack = true
-- job.pack = false

directives.register("job.pack",function(v) pack = v end)

local _save_, _load_, _others_ = { }, { }, { } -- registers timing

function job.save(filename) -- we could return a table but it can get pretty large
    statistics.starttiming(_save_)
    local f = io.open(filename,'w')
    if f then
        f:write("local utilitydata = { }\n\n")
        f:write(serialize(comment,"utilitydata.comment",true,true),"\n\n")
        for l=1,#savelist do
            local list      = savelist[l]
            local target    = format("utilitydata.%s",list[1])
            local data      = list[2]
            local finalizer = list[4]
            if type(finalizer) == "function" then
                finalizer()
            end
            if job.pack then
                packers.pack(data,jobpacker,true)
            end
            local definer, name = definetable(target,true,true) -- no first and no last
            f:write(definer,"\n\n",serialize(data,name,true,true),"\n\n")
        end
        if job.pack then
            packers.strip(jobpacker)
            f:write(serialize(jobpacker,"utilitydata.job.packed",true,true),"\n\n")
        end
        f:write("return utilitydata")
        f:close()
    end
    statistics.stoptiming(_save_)
end

local function load(filename)
    if lfs.isfile(filename) then
        local okay, data = pcall(dofile,filename)
        if okay and type(data) == "table" then
            local jobversion  = job.version
            local datacomment = data.comment
            local dataversion = datacomment and datacomment.version or "?"
            if dataversion ~= jobversion then
                report_passes("version mismatch: %s <> %s",dataversion,jobversion)
            else
                return data
            end
        else
            os.remove(filename) -- probably a bad file
            report_passes("removing stale job data file %a, restart job",filename)
            os.exit(true) -- trigger second run
        end
    end
end

function job.load(filename)
    statistics.starttiming(_load_)
    local utilitydata = load(filename)
    if utilitydata then
        local jobpacker = utilitydata.job.packed
        for l=1,#savelist do
            local list        = savelist[l]
            local target      = list[1]
            local initializer = list[3]
            local result      = accesstable(target,utilitydata)
            local done = packers.unpack(result,jobpacker,true)
            if done then
                migratetable(target,mark(result))
                if type(initializer) == "function" then
                    initializer(result)
                end
            else
                report_passes("pack version mismatch")
            end
        end
    end
    statistics.stoptiming(_load_)
end

function job.loadother(filename)
    statistics.starttiming(_load_)
    _others_[#_others_+1] = file.nameonly(filename)
    local utilitydata = load(filename)
    if utilitydata then
        local jobpacker = utilitydata.job.packed
        local unpacked = { }
        for l=1,#savelist do
            local list   = savelist[l]
            local target = list[1]
            local result = accesstable(target,utilitydata)
            local done = packers.unpack(result,jobpacker,true)
            if done then
                migratetable(target,result,unpacked)
            end
        end
        unpacked.job.packed = nil -- nicer in inspecting
        return unpacked
    end
    statistics.stoptiming(_load_)
end

-- eventually this will end up in strc-ini

statistics.register("startup time", function()
    return statistics.elapsedseconds(statistics,"including runtime option file processing")
end)

statistics.register("jobdata time",function()
    if enabled then
        if #_others_ > 0 then
            return format("%s seconds saving, %s seconds loading, other files: %s",statistics.elapsedtime(_save_),statistics.elapsedtime(_load_),concat(_others_," "))
        else
            return format("%s seconds saving, %s seconds loading",statistics.elapsedtime(_save_),statistics.elapsedtime(_load_))
        end
    else
        if #_others_ > 0 then
            return format("nothing saved, %s seconds loading, other files: %s",statistics.elapsedtime(_load_),concat(_others_," "))
        else
            return format("nothing saved, %s seconds loading",statistics.elapsedtime(_load_))
        end
    end
end)

statistics.register("callbacks", function()
    local total, indirect = status.callbacks or 0, status.indirect_callbacks or 0
    local pages = texcount['realpageno'] - 1
    if pages > 1 then
        return format("direct: %s, indirect: %s, total: %s (%i per page)", total-indirect, indirect, total, total/pages)
    else
        return format("direct: %s, indirect: %s, total: %s", total-indirect, indirect, total)
    end
end)

statistics.register("randomizer", function()
    if rmethod and rvalue then
        return format("%s with value %s",rmethod,rvalue)
    end
end)

function statistics.formatruntime(runtime)
    if not environment.initex then -- else error when testing as not counters yet
        local shipped = texcount['nofshipouts']
        local pages = texcount['realpageno']
        if pages > shipped then
            pages = shipped
        end
        if shipped > 0 or pages > 0 then
            local persecond = shipped / runtime
            if pages == 0 then pages = shipped end
            return format("%s seconds, %i processed pages, %i shipped pages, %.3f pages/second",runtime,pages,shipped,persecond)
        else
            return format("%s seconds",runtime)
        end
    end
end