diff options
Diffstat (limited to 'tex/generic/context/luatex/luatex-preprocessor.lua')
-rw-r--r-- | tex/generic/context/luatex/luatex-preprocessor.lua | 326 |
1 files changed, 163 insertions, 163 deletions
diff --git a/tex/generic/context/luatex/luatex-preprocessor.lua b/tex/generic/context/luatex/luatex-preprocessor.lua index 8faa0b47e..610fe4b4d 100644 --- a/tex/generic/context/luatex/luatex-preprocessor.lua +++ b/tex/generic/context/luatex/luatex-preprocessor.lua @@ -1,163 +1,163 @@ -if not modules then modules = { } end modules ['luatex-preprocessor'] = { - version = 1.001, - comment = "companion to luatex-preprocessor.tex", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - ---[[ldx -<p>This is a stripped down version of the preprocessor. In -<l n='context'/> we have a bit more, use a different logger, and -use a few optimizations. A few examples are shown at the end.</p> ---ldx]] - -local rep, sub, gmatch = string.rep, string.sub, string.gmatch -local insert, remove = table.insert, table.remove -local setmetatable = setmetatable - -local stack, top, n, hashes = { }, nil, 0, { } - -local function set(s) - if top then - n = n + 1 - if n > 9 then - texio.write_nl("number of arguments > 9, ignoring: " .. s) - else - local ns = #stack - local h = hashes[ns] - if not h then - h = rep("#",ns) - hashes[ns] = h - end - m = h .. n - top[s] = m - return m - end - end -end - -local function get(s) - local m = top and top[s] or s - return m -end - -local function push() - top = { } - n = 0 - local s = stack[#stack] - if s then - setmetatable(top,{ __index = s }) - end - insert(stack,top) -end - -local function pop() - top = remove(stack) -end - -local leftbrace = lpeg.P("{") -local rightbrace = lpeg.P("}") -local escape = lpeg.P("\\") - -local space = lpeg.P(" ") -local spaces = space^1 -local newline = lpeg.S("\r\n") -local nobrace = 1 - leftbrace - rightbrace - -local name = lpeg.R("AZ","az")^1 -local longname = (leftbrace/"") * (nobrace^1) * (rightbrace/"") -local variable = lpeg.P("#") * lpeg.Cs(name + longname) -local escapedname = escape * name -local definer = escape * (lpeg.P("def") + lpeg.P("egdx") * lpeg.P("def")) -local anything = lpeg.P(1) -local always = lpeg.P(true) - -local pushlocal = always / push -local poplocal = always / pop -local declaration = variable / set -local identifier = variable / get - -local function matcherror(str,pos) - texio.write_nl("runaway definition at: " .. sub(str,pos-30,pos)) -end - -local parser = lpeg.Cs { "converter", - definition = pushlocal - * definer - * escapedname - * (declaration + (1-leftbrace))^0 - * lpeg.V("braced") - * poplocal, - braced = leftbrace - * ( lpeg.V("definition") - + identifier - + lpeg.V("braced") - + nobrace - )^0 - * (rightbrace + lpeg.Cmt(always,matcherror)), - converter = (lpeg.V("definition") + anything)^1, -} - ---[[ldx -<p>We provide a few commands.</p> ---ldx]] - --- local texkpse - -local function find_file(...) - -- texkpse = texkpse or kpse.new("luatex","tex") - -- return texkpse:find_file(...) or "" - return kpse.find_file(...) or "" -end - -commands = commands or { } - -function commands.preprocessed(str) - return lpeg.match(parser,str) -end - -function commands.inputpreprocessed(name) - local name = find_file(name) or "" - if name ~= "" then - -- we could use io.loaddata as it's loaded in luatex-plain - local f = io.open(name,'rb') - if f then - texio.write("("..name) - local d = commands.preprocessed(f:read("*a")) - if d and d ~= "" then - texio.write("processed: " .. name) - for s in gmatch(d,"[^\n\r]+") do - tex.print(s) -- we do a dumb feedback - end - end - f:close() - texio.write(")") - else - tex.error("preprocessor error, invalid file: " .. name) - end - else - tex.error("preprocessor error, unknown file: " .. name) - end -end - -function commands.preprocessfile(oldfile,newfile) -- no checking - if oldfile and oldfile ~= newfile then - local f = io.open(oldfile,'rb') - if f then - local g = io.open(newfile,'wb') - if g then - g:write(lpeg.match(parser,f:read("*a") or "")) - g:close() - end - f:close() - end - end -end - ---~ print(preprocessed([[\def\test#oeps{test:#oeps}]])) ---~ print(preprocessed([[\def\test#oeps{test:#{oeps}}]])) ---~ print(preprocessed([[\def\test#{oeps:1}{test:#{oeps:1}}]])) ---~ print(preprocessed([[\def\test#{oeps}{test:#oeps}]])) ---~ preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}]]) ---~ print(preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}}]])) +if not modules then modules = { } end modules ['luatex-preprocessor'] = {
+ version = 1.001,
+ comment = "companion to luatex-preprocessor.tex",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+--[[ldx
+<p>This is a stripped down version of the preprocessor. In
+<l n='context'/> we have a bit more, use a different logger, and
+use a few optimizations. A few examples are shown at the end.</p>
+--ldx]]
+
+local rep, sub, gmatch = string.rep, string.sub, string.gmatch
+local insert, remove = table.insert, table.remove
+local setmetatable = setmetatable
+
+local stack, top, n, hashes = { }, nil, 0, { }
+
+local function set(s)
+ if top then
+ n = n + 1
+ if n > 9 then
+ texio.write_nl("number of arguments > 9, ignoring: " .. s)
+ else
+ local ns = #stack
+ local h = hashes[ns]
+ if not h then
+ h = rep("#",ns)
+ hashes[ns] = h
+ end
+ m = h .. n
+ top[s] = m
+ return m
+ end
+ end
+end
+
+local function get(s)
+ local m = top and top[s] or s
+ return m
+end
+
+local function push()
+ top = { }
+ n = 0
+ local s = stack[#stack]
+ if s then
+ setmetatable(top,{ __index = s })
+ end
+ insert(stack,top)
+end
+
+local function pop()
+ top = remove(stack)
+end
+
+local leftbrace = lpeg.P("{")
+local rightbrace = lpeg.P("}")
+local escape = lpeg.P("\\")
+
+local space = lpeg.P(" ")
+local spaces = space^1
+local newline = lpeg.S("\r\n")
+local nobrace = 1 - leftbrace - rightbrace
+
+local name = lpeg.R("AZ","az")^1
+local longname = (leftbrace/"") * (nobrace^1) * (rightbrace/"")
+local variable = lpeg.P("#") * lpeg.Cs(name + longname)
+local escapedname = escape * name
+local definer = escape * (lpeg.P("def") + lpeg.P("egdx") * lpeg.P("def"))
+local anything = lpeg.P(1)
+local always = lpeg.P(true)
+
+local pushlocal = always / push
+local poplocal = always / pop
+local declaration = variable / set
+local identifier = variable / get
+
+local function matcherror(str,pos)
+ texio.write_nl("runaway definition at: " .. sub(str,pos-30,pos))
+end
+
+local parser = lpeg.Cs { "converter",
+ definition = pushlocal
+ * definer
+ * escapedname
+ * (declaration + (1-leftbrace))^0
+ * lpeg.V("braced")
+ * poplocal,
+ braced = leftbrace
+ * ( lpeg.V("definition")
+ + identifier
+ + lpeg.V("braced")
+ + nobrace
+ )^0
+ * (rightbrace + lpeg.Cmt(always,matcherror)),
+ converter = (lpeg.V("definition") + anything)^1,
+}
+
+--[[ldx
+<p>We provide a few commands.</p>
+--ldx]]
+
+-- local texkpse
+
+local function find_file(...)
+ -- texkpse = texkpse or kpse.new("luatex","tex")
+ -- return texkpse:find_file(...) or ""
+ return kpse.find_file(...) or ""
+end
+
+commands = commands or { }
+
+function commands.preprocessed(str)
+ return lpeg.match(parser,str)
+end
+
+function commands.inputpreprocessed(name)
+ local name = find_file(name) or ""
+ if name ~= "" then
+ -- we could use io.loaddata as it's loaded in luatex-plain
+ local f = io.open(name,'rb')
+ if f then
+ texio.write("("..name)
+ local d = commands.preprocessed(f:read("*a"))
+ if d and d ~= "" then
+ texio.write("processed: " .. name)
+ for s in gmatch(d,"[^\n\r]+") do
+ tex.print(s) -- we do a dumb feedback
+ end
+ end
+ f:close()
+ texio.write(")")
+ else
+ tex.error("preprocessor error, invalid file: " .. name)
+ end
+ else
+ tex.error("preprocessor error, unknown file: " .. name)
+ end
+end
+
+function commands.preprocessfile(oldfile,newfile) -- no checking
+ if oldfile and oldfile ~= newfile then
+ local f = io.open(oldfile,'rb')
+ if f then
+ local g = io.open(newfile,'wb')
+ if g then
+ g:write(lpeg.match(parser,f:read("*a") or ""))
+ g:close()
+ end
+ f:close()
+ end
+ end
+end
+
+--~ print(preprocessed([[\def\test#oeps{test:#oeps}]]))
+--~ print(preprocessed([[\def\test#oeps{test:#{oeps}}]]))
+--~ print(preprocessed([[\def\test#{oeps:1}{test:#{oeps:1}}]]))
+--~ print(preprocessed([[\def\test#{oeps}{test:#oeps}]]))
+--~ preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}]])
+--~ print(preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}}]]))
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