summaryrefslogtreecommitdiff
path: root/lualibs-dir.lua
blob: 00cda389913ede991b021592f7c90aa7131f19dd (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
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
if not modules then modules = { } end modules ['l-dir'] = {
    version   = 1.001,
    comment   = "companion to luat-lib.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

-- dir.expandname will be merged with cleanpath and collapsepath

local type, select = type, select
local find, gmatch, match, gsub = string.find, string.gmatch, string.match, string.gsub
local concat, insert, remove = table.concat, table.insert, table.remove
local lpegmatch = lpeg.match

local P, S, R, C, Cc, Cs, Ct, Cv, V = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Cv, lpeg.V

dir = dir or { }
local dir = dir
local lfs = lfs

local attributes = lfs.attributes
local walkdir    = lfs.dir
local isdir      = lfs.isdir
local isfile     = lfs.isfile
local currentdir = lfs.currentdir
local chdir      = lfs.chdir

-- in case we load outside luatex

if not isdir then
    function isdir(name)
        local a = attributes(name)
        return a and a.mode == "directory"
    end
    lfs.isdir = isdir
end

if not isfile then
    function isfile(name)
        local a = attributes(name)
        return a and a.mode == "file"
    end
    lfs.isfile = isfile
end

-- handy

function dir.current()
    return (gsub(currentdir(),"\\","/"))
end

-- optimizing for no find (*) does not save time

--~ local function globpattern(path,patt,recurse,action) -- fails in recent luatex due to some change in lfs
--~     local ok, scanner
--~     if path == "/" then
--~         ok, scanner = xpcall(function() return walkdir(path..".") end, function() end) -- kepler safe
--~     else
--~         ok, scanner = xpcall(function() return walkdir(path)      end, function() end) -- kepler safe
--~     end
--~     if ok and type(scanner) == "function" then
--~         if not find(path,"/$") then path = path .. '/' end
--~         for name in scanner do
--~             local full = path .. name
--~             local mode = attributes(full,'mode')
--~             if mode == 'file' then
--~                 if find(full,patt) then
--~                     action(full)
--~                 end
--~             elseif recurse and (mode == "directory") and (name ~= '.') and (name ~= "..") then
--~                 globpattern(full,patt,recurse,action)
--~             end
--~         end
--~     end
--~ end

local lfsisdir = isdir

local function isdir(path)
    path = gsub(path,"[/\\]+$","")
    return lfsisdir(path)
end

lfs.isdir = isdir

local function globpattern(path,patt,recurse,action)
    if path == "/" then
        path = path .. "."
    elseif not find(path,"/$") then
        path = path .. '/'
    end
    if isdir(path) then -- lfs.isdir does not like trailing /
        for name in walkdir(path) do -- lfs.dir accepts trailing /
            local full = path .. name
            local mode = attributes(full,'mode')
            if mode == 'file' then
                if find(full,patt) then
                    action(full)
                end
            elseif recurse and (mode == "directory") and (name ~= '.') and (name ~= "..") then
                globpattern(full,patt,recurse,action)
            end
        end
    end
end

dir.globpattern = globpattern

local function collectpattern(path,patt,recurse,result)
    local ok, scanner
    result = result or { }
    if path == "/" then
        ok, scanner, first = xpcall(function() return walkdir(path..".") end, function() end) -- kepler safe
    else
        ok, scanner, first = xpcall(function() return walkdir(path)      end, function() end) -- kepler safe
    end
    if ok and type(scanner) == "function" then
        if not find(path,"/$") then path = path .. '/' end
        for name in scanner, first do
            local full = path .. name
            local attr = attributes(full)
            local mode = attr.mode
            if mode == 'file' then
                if find(full,patt) then
                    result[name] = attr
                end
            elseif recurse and (mode == "directory") and (name ~= '.') and (name ~= "..") then
                attr.list = collectpattern(full,patt,recurse)
                result[name] = attr
            end
        end
    end
    return result
end

dir.collectpattern = collectpattern

local pattern = Ct {
    [1] = (C(P(".") + P("/")^1) + C(R("az","AZ") * P(":") * P("/")^0) + Cc("./")) * V(2) * V(3),
    [2] = C(((1-S("*?/"))^0 * P("/"))^0),
    [3] = C(P(1)^0)
}

local filter = Cs ( (
    P("**") / ".*" +
    P("*")  / "[^/]*" +
    P("?")  / "[^/]" +
    P(".")  / "%%." +
    P("+")  / "%%+" +
    P("-")  / "%%-" +
    P(1)
)^0 )

local function glob(str,t)
    if type(t) == "function" then
        if type(str) == "table" then
            for s=1,#str do
                glob(str[s],t)
            end
        elseif isfile(str) then
            t(str)
        else
            local split = lpegmatch(pattern,str) -- we could use the file splitter
            if split then
                local root, path, base = split[1], split[2], split[3]
                local recurse = find(base,"%*%*")
                local start = root .. path
                local result = lpegmatch(filter,start .. base)
                globpattern(start,result,recurse,t)
            end
        end
    else
        if type(str) == "table" then
            local t = t or { }
            for s=1,#str do
                glob(str[s],t)
            end
            return t
        elseif isfile(str) then
            if t then
                t[#t+1] = str
                return t
            else
                return { str }
            end
        else
            local split = lpegmatch(pattern,str) -- we could use the file splitter
            if split then
                local t = t or { }
                local action = action or function(name) t[#t+1] = name end
                local root, path, base = split[1], split[2], split[3]
                local recurse = find(base,"%*%*")
                local start = root .. path
                local result = lpegmatch(filter,start .. base)
                globpattern(start,result,recurse,action)
                return t
            else
                return { }
            end
        end
    end
end

dir.glob = glob

--~ list = dir.glob("**/*.tif")
--~ list = dir.glob("/**/*.tif")
--~ list = dir.glob("./**/*.tif")
--~ list = dir.glob("oeps/**/*.tif")
--~ list = dir.glob("/oeps/**/*.tif")

local function globfiles(path,recurse,func,files) -- func == pattern or function
    if type(func) == "string" then
        local s = func
        func = function(name) return find(name,s) end
    end
    files = files or { }
    local noffiles = #files
    for name in walkdir(path) do
        if find(name,"^%.") then
            --- skip
        else
            local mode = attributes(name,'mode')
            if mode == "directory" then
                if recurse then
                    globfiles(path .. "/" .. name,recurse,func,files)
                end
            elseif mode == "file" then
                if not func or func(name) then
                    noffiles = noffiles + 1
                    files[noffiles] = path .. "/" .. name
                end
            end
        end
    end
    return files
end

dir.globfiles = globfiles

-- t = dir.glob("c:/data/develop/context/sources/**/????-*.tex")
-- t = dir.glob("c:/data/develop/tex/texmf/**/*.tex")
-- t = dir.glob("c:/data/develop/context/texmf/**/*.tex")
-- t = dir.glob("f:/minimal/tex/**/*")
-- print(dir.ls("f:/minimal/tex/**/*"))
-- print(dir.ls("*.tex"))

function dir.ls(pattern)
    return concat(glob(pattern),"\n")
end

--~ mkdirs("temp")
--~ mkdirs("a/b/c")
--~ mkdirs(".","/a/b/c")
--~ mkdirs("a","b","c")

local make_indeed = true -- false

local onwindows = os.type == "windows" or find(os.getenv("PATH"),";")

if onwindows then

    function dir.mkdirs(...)
        local str, pth = "", ""
        for i=1,select("#",...) do
            local s = select(i,...)
            if s == "" then
                -- skip
            elseif str == "" then
                str = s
            else
                str = str .. "/" .. s
            end
        end
        local first, middle, last
        local drive = false
        first, middle, last = match(str,"^(//)(//*)(.*)$")
        if first then
            -- empty network path == local path
        else
            first, last = match(str,"^(//)/*(.-)$")
            if first then
                middle, last = match(str,"([^/]+)/+(.-)$")
                if middle then
                    pth = "//" .. middle
                else
                    pth = "//" .. last
                    last = ""
                end
            else
                first, middle, last = match(str,"^([a-zA-Z]:)(/*)(.-)$")
                if first then
                    pth, drive = first .. middle, true
                else
                    middle, last = match(str,"^(/*)(.-)$")
                    if not middle then
                        last = str
                    end
                end
            end
        end
        for s in gmatch(last,"[^/]+") do
            if pth == "" then
                pth = s
            elseif drive then
                pth, drive = pth .. s, false
            else
                pth = pth .. "/" .. s
            end
            if make_indeed and not isdir(pth) then
                lfs.mkdir(pth)
            end
        end
        return pth, (isdir(pth) == true)
    end

    --~ print(dir.mkdirs("","","a","c"))
    --~ print(dir.mkdirs("a"))
    --~ print(dir.mkdirs("a:"))
    --~ print(dir.mkdirs("a:/b/c"))
    --~ print(dir.mkdirs("a:b/c"))
    --~ print(dir.mkdirs("a:/bbb/c"))
    --~ print(dir.mkdirs("/a/b/c"))
    --~ print(dir.mkdirs("/aaa/b/c"))
    --~ print(dir.mkdirs("//a/b/c"))
    --~ print(dir.mkdirs("///a/b/c"))
    --~ print(dir.mkdirs("a/bbb//ccc/"))

else

    function dir.mkdirs(...)
        local str, pth = "", ""
        for i=1,select("#",...) do
            local s = select(i,...)
            if s and s ~= "" then -- we catch nil and false
                if str ~= "" then
                    str = str .. "/" .. s
                else
                    str = s
                end
            end
        end
        str = gsub(str,"/+","/")
        if find(str,"^/") then
            pth = "/"
            for s in gmatch(str,"[^/]+") do
                local first = (pth == "/")
                if first then
                    pth = pth .. s
                else
                    pth = pth .. "/" .. s
                end
                if make_indeed and not first and not isdir(pth) then
                    lfs.mkdir(pth)
                end
            end
        else
            pth = "."
            for s in gmatch(str,"[^/]+") do
                pth = pth .. "/" .. s
                if make_indeed and not isdir(pth) then
                    lfs.mkdir(pth)
                end
            end
        end
        return pth, (isdir(pth) == true)
    end

    --~ print(dir.mkdirs("","","a","c"))
    --~ print(dir.mkdirs("a"))
    --~ print(dir.mkdirs("/a/b/c"))
    --~ print(dir.mkdirs("/aaa/b/c"))
    --~ print(dir.mkdirs("//a/b/c"))
    --~ print(dir.mkdirs("///a/b/c"))
    --~ print(dir.mkdirs("a/bbb//ccc/"))

end

dir.makedirs = dir.mkdirs

-- we can only define it here as it uses dir.current

if onwindows then

    function dir.expandname(str) -- will be merged with cleanpath and collapsepath
        local first, nothing, last = match(str,"^(//)(//*)(.*)$")
        if first then
            first = dir.current() .. "/" -- dir.current sanitizes
        end
        if not first then
            first, last = match(str,"^(//)/*(.*)$")
        end
        if not first then
            first, last = match(str,"^([a-zA-Z]:)(.*)$")
            if first and not find(last,"^/") then
                local d = currentdir()
                if chdir(first) then
                    first = dir.current()
                end
                chdir(d)
            end
        end
        if not first then
            first, last = dir.current(), str
        end
        last = gsub(last,"//","/")
        last = gsub(last,"/%./","/")
        last = gsub(last,"^/*","")
        first = gsub(first,"/*$","")
        if last == "" or last == "." then
            return first
        else
            return first .. "/" .. last
        end
    end

else

    function dir.expandname(str) -- will be merged with cleanpath and collapsepath
        if not find(str,"^/") then
            str = currentdir() .. "/" .. str
        end
        str = gsub(str,"//","/")
        str = gsub(str,"/%./","/")
        str = gsub(str,"(.)/%.$","%1")
        return str
    end

end

file.expandname = dir.expandname -- for convenience

local stack = { }

function dir.push(newdir)
    insert(stack,currentdir())
    if newdir and newdir ~= "" then
        chdir(newdir)
    end
end

function dir.pop()
    local d = remove(stack)
    if d then
        chdir(d)
    end
    return d
end