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
|
if not modules then modules = { } end modules ['data-tre'] = {
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"
}
-- tree://e:/temporary/mb-mp/**/drawing.jpg
-- tree://e:/temporary/mb-mp/**/Drawing.jpg
-- tree://t:./**/tufte.tex
-- tree://t:/./**/tufte.tex
-- tree://t:/**/tufte.tex
-- dirlist://e:/temporary/mb-mp/**/drawing.jpg
-- dirlist://e:/temporary/mb-mp/**/Drawing.jpg
-- dirlist://e:/temporary/mb-mp/**/just/some/place/drawing.jpg
-- dirlist://e:/temporary/mb-mp/**/images/drawing.jpg
-- dirlist://e:/temporary/mb-mp/**/images/drawing.jpg?option=fileonly
-- dirlist://///storage-2/resources/mb-mp/**/drawing.jpg
-- dirlist://e:/**/drawing.jpg
local find, gsub, lower = string.find, string.gsub, string.lower
local basename, dirname, joinname = file.basename, file.dirname, file .join
local globdir, isdir, isfile = dir.glob, lfs.isdir, lfs.isfile
local P, lpegmatch = lpeg.P, lpeg.match
local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
local report_trees = logs.reporter("resolvers","trees")
local resolvers = resolvers
local resolveprefix = resolvers.resolve
local notfound = resolvers.finders.notfound
local lookup = resolvers.get_from_content
-- A tree search is rather dumb ... there is some basic caching of searched trees
-- but nothing is cached over runs ... it's also a wildcard one so we cannot use
-- the normal scanner.
local collectors = { }
local found = { }
function resolvers.finders.tree(specification) -- to be adapted to new formats
local spec = specification.filename
local okay = found[spec]
if okay == nil then
if spec ~= "" then
local path = dirname(spec)
local name = basename(spec)
if path == "" then
path = "."
end
local names = collectors[path]
if not names then
local pattern = find(path,"/%*+$") and path or (path .. "/*")
names = globdir(pattern)
collectors[path] = names
end
local pattern = "/" .. gsub(name,"([%.%-%+])", "%%%1") .. "$"
for i=1,#names do
local fullname = names[i]
if find(fullname,pattern) then
found[spec] = fullname
return fullname
end
end
-- let's be nice:
local pattern = lower(pattern)
for i=1,#names do
local fullname = lower(names[i])
if find(fullname,pattern) then
if isfile(fullname) then
found[spec] = fullname
return fullname
else
-- no os name mapping
break
end
end
end
end
okay = notfound() -- false
found[spec] = okay
end
return okay
end
function resolvers.locators.tree(specification)
local name = specification.filename
local realname = resolveprefix(name) -- no shortcut
if realname and realname ~= '' and isdir(realname) then
if trace_locating then
report_trees("locator %a found",realname)
end
resolvers.appendhash('tree',name,false) -- don't cache
elseif trace_locating then
report_trees("locator %a not found",name)
end
end
function resolvers.hashers.tree(specification)
local name = specification.filename
-- if trace_locating then
report_trees("analyzing %a",name)
-- end
resolvers.methodhandler("hashers",name)
resolvers.generators.file(specification)
end
-- This is a variation on tree lookups but this time we do cache in the given
-- root. We use a similar hasher as the resolvers because we have to deal with
-- for instance trees with 50K xml files plus a similar amount of resources to
-- deal and we don't want too much overhead.
local collectors = { }
local splitter = lpeg.splitat("/**/")
local stripper = lpeg.replacer { [P("/") * P("*")^1 * P(-1)] = "" }
table.setmetatableindex(collectors, function(t,k)
local rootname = lpegmatch(stripper,k)
local dataname = joinname(rootname,"dirlist")
local content = caches.loadcontent(dataname,"files",dataname)
if not content then
-- path branch usecache onlyonce tolerant
content = resolvers.scanfiles(rootname,nil,nil,false,true) -- so we accept crap
caches.savecontent(dataname,"files",content,dataname)
end
t[k] = content
return content
end)
local function checked(root,p,n)
if p then
if type(p) == "table" then
for i=1,#p do
local fullname = joinname(root,p[i],n)
if isfile(fullname) then -- safeguard
return fullname
end
end
else
local fullname = joinname(root,p,n)
if isfile(fullname) then -- safeguard
return fullname
end
end
end
return notfound()
end
-- no funny characters in path but in filename permitted .. sigh
local function resolve(specification) -- can be called directly too
local filename = specification.filename
-- inspect(specification)
if filename ~= "" then
local root, rest = lpegmatch(splitter,filename)
if root and rest then
local path, name = dirname(rest), basename(rest)
if name ~= rest then
local content = collectors[root]
local p, n = lookup(content,name)
if not p then
return notfound()
end
local pattern = ".*/" .. path .. "$"
local istable = type(p) == "table"
if istable then
for i=1,#p do
local pi = p[i]
if pi == path or find(pi,pattern) then
local fullname = joinname(root,pi,n)
if isfile(fullname) then -- safeguard
return fullname
end
end
end
elseif p == path or find(p,pattern) then
local fullname = joinname(root,p,n)
if isfile(fullname) then -- safeguard
return fullname
end
end
local queries = specification.queries
if queries and queries.option == "fileonly" then
return checked(root,p,n)
else
return notfound()
end
end
end
local path, name = dirname(filename), basename(filename)
local root = lpegmatch(stripper,path)
local content = collectors[path]
local p, n = lookup(content,name)
if p then
return checked(root,p,n)
end
end
return notfound()
end
resolvers.finders .dirlist = resolve
resolvers.locators .dirlist = resolvers.locators .tree
resolvers.hashers .dirlist = resolvers.hashers .tree
resolvers.generators.dirlist = resolvers.generators.file
resolvers.openers .dirlist = resolvers.openers .file
resolvers.loaders .dirlist = resolvers.loaders .file
function resolvers.finders.dirfile(specification)
local queries = specification.queries
if queries then
queries.option = "fileonly"
else
specification.queries = { option = "fileonly" }
end
return resolve(specification)
end
resolvers.locators .dirfile = resolvers.locators .dirlist
resolvers.hashers .dirfile = resolvers.hashers .dirlist
resolvers.generators.dirfile = resolvers.generators.dirlist
resolvers.openers .dirfile = resolvers.openers .dirlist
resolvers.loaders .dirfile = resolvers.loaders .dirlist
-- local locate = collectors[ [[E:\temporary\mb-mp]] ]
-- local locate = collectors( [[\\storage-2\resources\mb-mp]] )
-- print(resolvers.findtexfile("tree://e:/temporary/mb-mp/**/VB_wmf_03_vw_01d_ant.jpg"))
-- print(resolvers.findtexfile("tree://t:/**/tufte.tex"))
-- print(resolvers.findtexfile("dirlist://e:/temporary/mb-mp/**/VB_wmf_03_vw_01d_ant.jpg"))
|
