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
|
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 = dir.glob, lfs.isdir
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
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("analysing %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
content = resolvers.scanfiles(rootname)
caches.savecontent(dataname,"files",content,dataname)
end
t[k] = content
return content
end)
function resolvers.finders.dirlist(specification) -- can be called directly too
local filename = specification.filename
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
return joinname(root,pi,n)
end
end
else
if p == path or find(p,pattern) then
return joinname(root,p,n)
end
end
local queries = specification.queries
if queries and queries.option == "fileonly" then
return joinname(root,istable and p[1] or p,n)
end
return notfound()
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 not p then
return notfound()
elseif type(p) == "table" then
-- maybe a warning that the first name is taken
p = p[1]
end
return joinname(root,p,n)
end
return notfound()
end
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
-- 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"))
|
