summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/file-mod.lua
blob: 2f34d9dd2a9d8860a50fa381610370268fb2b7f1 (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
if not modules then modules = { } end modules ['file-mod'] = {
    version   = 1.001,
    comment   = "companion to file-mod.mkvi",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

-- This module will be redone! For instance, the prefixes will move to data-*
-- as they arr sort of generic along with home:// etc/.

-- context is not defined yet! todo! (we need to load tupp-fil after cld)
-- todo: move startreadingfile to lua and push regime there

--[[ldx--
<p>It's more convenient to manipulate filenames (paths) in
<l n='lua'/> than in <l n='tex'/>. These methods have counterparts
at the <l n='tex'/> side.</p>
--ldx]]--

local format, concat, tonumber = string.format, table.concat, tonumber

local trace_modules     = false  trackers  .register("modules.loading",          function(v) trace_modules     = v end)
local permit_unprefixed = false  directives.register("modules.permitunprefixed", function(v) permit_unprefixed = v end)

local report_modules    = logs.reporter("resolvers","modules")

commands                = commands or { }
local commands          = commands

local context           = context

local findbyscheme      = resolvers.finders.byscheme -- use different one
local iterator          = utilities.parsers.iterator

-- modules can have a specific suffix or can specify one

local prefixes  = { "m", "p", "s", "x", "v", "t" }
local suffixes  = { "mkvi", "mkiv", "tex", "cld", "lua" } -- order might change and how about cld
local modstatus = { }

local function usemodule(name,hasscheme)
    local foundname
    if hasscheme then
        -- no auto suffix as http will return a home page or error page
        -- so we only add one if missing
        local fullname = file.addsuffix(name,"tex")
        if trace_modules then
            report_modules("checking url %a",fullname)
        end
        foundname = resolvers.findtexfile(fullname) or ""
    elseif file.suffix(name) ~= "" then
        if trace_modules then
            report_modules("checking file %a",name)
        end
        foundname = findbyscheme("any",name) or ""
    else
        for i=1,#suffixes do
            local fullname = file.addsuffix(name,suffixes[i])
            if trace_modules then
                report_modules("checking file %a",fullname)
            end
            foundname = findbyscheme("any",fullname) or ""
            if foundname ~= "" then
                break
            end
        end
    end
    if foundname ~= "" then
        if trace_modules then
            report_modules("loading file %a",foundname)
        end
        context.startreadingfile()
        resolvers.jobs.usefile(foundname,true) -- once, notext
     -- context.input(foundname)
        context.stopreadingfile()
        return true
    else
        return false
    end
end

function commands.usemodules(prefix,askedname,truename)
    local truename = truename or environment.truefilename(askedname)
    local hasprefix = prefix and prefix ~= ""
    local hashname = ((hasprefix and prefix) or "*") .. "-" .. truename
    local status = modstatus[hashname]
    if status == 0 then
        -- not found
    elseif status == 1 then
        status = status + 1
    else
        if trace_modules then
            report_modules("locating, prefix %a, askedname %a, truename %a",prefix,askedname,truename)
        end
        local hasscheme = url.hasscheme(truename)
        if hasscheme then
            -- no prefix and suffix done
            if usemodule(truename,true) then
                status = 1
            else
                status = 0
            end
        elseif hasprefix then
            if usemodule(prefix .. "-" .. truename) then
                status = 1
            else
                status = 0
            end
        else
            for i=1,#prefixes do
                -- todo: reconstruct name i.e. basename
                local thename = prefixes[i] .. "-" .. truename
                if usemodule(thename) then
                    status = 1
                    break
                end
            end
            if status then
                -- ok, don't change
            elseif not permit_unprefixed then
                -- forget about it
            elseif usemodule(truename) then
                report_modules("using unprefixed file %a",truename)
                status = 1
            else
                status = 0
            end
        end
    end
    if status == 0 then
        report_modules("%a is not found",askedname)
    elseif status == 1 then
        report_modules("%a is loaded",trace_modules and truename or askedname)
    else
        report_modules("%a is already loaded",trace_modules and truename or askedname)
    end
    modstatus[hashname] = status
end

statistics.register("loaded tex modules", function()
    if next(modstatus) then
        local t, f, nt, nf = { }, { }, 0, 0
        for k, v in table.sortedhash(modstatus) do
            k = file.basename(k)
            if v == 0 then
                nf = nf + 1
                f[nf] = k
            else
                nt = nt + 1
                t[nt] = k
            end
        end
        if nf == 0 then
            return format("%s requested, all found (%s)",nt,concat(t," "))
        elseif nt == 0 then
            return format("%s requested, all missing (%s)",nf,concat(f," "))
        else
            return format("%s requested, %s found (%s), %s missing (%s)",nt+nf,nt,concat(t," "),nf,concat(f," "))
        end
    else
        return nil
    end
end)

-- moved from syst-lua.lua:

local splitter = lpeg.tsplitter(lpeg.S(". "),tonumber)

function commands.doifolderversionelse(one,two) -- one >= two
    if not two then
        one, two = environment.version, one
    elseif one == "" then
        one = environment.version
    end
    one = lpeg.match(splitter,one)
    two = lpeg.match(splitter,two)
    one = (one[1] or 0) * 10000 + (one[2] or 0) * 100 + (one[3] or 0)
    two = (two[1] or 0) * 10000 + (two[2] or 0) * 100 + (two[3] or 0)
    commands.doifelse(one>=two)
end

function commands.useluamodule(list)
    for filename in iterator(list) do
        environment.loadluafile(filename)
    end
end