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-rw-r--r--tex/context/base/mkiv/data-aux.lua63
1 files changed, 63 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/data-aux.lua b/tex/context/base/mkiv/data-aux.lua
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+++ b/tex/context/base/mkiv/data-aux.lua
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+if not modules then modules = { } end modules ['data-aux'] = {
+ 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"
+}
+
+local find = string.find
+local type, next = type, next
+
+local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
+
+local resolvers = resolvers
+
+local report_scripts = logs.reporter("resolvers","scripts")
+
+function resolvers.updatescript(oldname,newname) -- oldname -> own.name, not per se a suffix
+ -- local scriptpath = "scripts/context/lua"
+ local scriptpath = "context/lua"
+ newname = file.addsuffix(newname,"lua")
+ local oldscript = resolvers.cleanpath(oldname)
+ if trace_locating then
+ report_scripts("to be replaced old script %a", oldscript)
+ end
+ local newscripts = resolvers.findfiles(newname) or { }
+ if #newscripts == 0 then
+ if trace_locating then
+ report_scripts("unable to locate new script")
+ end
+ else
+ for i=1,#newscripts do
+ local newscript = resolvers.cleanpath(newscripts[i])
+ if trace_locating then
+ report_scripts("checking new script %a", newscript)
+ end
+ if oldscript == newscript then
+ if trace_locating then
+ report_scripts("old and new script are the same")
+ end
+ elseif not find(newscript,scriptpath) then
+ if trace_locating then
+ report_scripts("new script should come from %a",scriptpath)
+ end
+ elseif not (find(oldscript,file.removesuffix(newname).."$") or find(oldscript,newname.."$")) then
+ if trace_locating then
+ report_scripts("invalid new script name")
+ end
+ else
+ local newdata = io.loaddata(newscript)
+ if newdata then
+ if trace_locating then
+ report_scripts("old script content replaced by new content")
+ end
+ io.savedata(oldscript,newdata)
+ break
+ elseif trace_locating then
+ report_scripts("unable to load new script")
+ end
+ end
+ end
+ end
+end