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-rw-r--r--scripts/context/lua/mtx-pdf.lua117
-rw-r--r--scripts/context/lua/mtxrun.lua36
-rw-r--r--scripts/context/stubs/mswin/mtxrun.lua36
-rw-r--r--scripts/context/stubs/unix/mtxrun36
4 files changed, 222 insertions, 3 deletions
diff --git a/scripts/context/lua/mtx-pdf.lua b/scripts/context/lua/mtx-pdf.lua
new file mode 100644
index 000000000..5654b8bc4
--- /dev/null
+++ b/scripts/context/lua/mtx-pdf.lua
@@ -0,0 +1,117 @@
+if not modules then modules = { } end modules ['mtx-pdf'] = {
+ version = 1.001,
+ comment = "companion to mtxrun.lua",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+local helpinfo = [[
+--info show some info about the given file
+--metadata show metadata xml blob
+]]
+
+local application = logs.application {
+ name = "mtx-pdf",
+ banner = "ConTeXt PDF Helpers 0.01",
+ helpinfo = helpinfo,
+}
+
+local report = application.report
+
+dofile(resolvers.findfile("lpdf-epd.lua","tex"))
+
+scripts = scripts or { }
+scripts.pdf = scripts.pdf or { }
+
+local function loadpdffile(filename)
+ if not filename or filename == "" then
+ report("no filename given")
+ elseif not lfs.isfile(filename) then
+ report("unknown file '%s'",filename)
+ else
+ local pdffile = lpdf.epdf.load(filename)
+ if pdffile then
+ return pdffile
+ else
+ report("no valid pdf file '%s'",filename)
+ end
+ end
+end
+
+function scripts.pdf.info()
+ local filename = environment.files[1]
+ local pdffile = loadpdffile(filename)
+ if pdffile then
+ local catalog = pdffile.Catalog
+ local info = pdffile.Info
+ local pages = pdffile.pages
+ local nofpages = pages.n -- no # yet. will be in 5.2
+
+ report("filename > %s",filename)
+ report("pdf version > %s",catalog.Version)
+ report("number of pages > %s",nofpages)
+ report("title > %s",info.Title)
+ report("creator > %s",info.Creator)
+ report("producer > %s",info.Producer)
+ report("creation date > %s",info.CreationDate)
+ report("modification date > %s",info.ModDate)
+
+ local width, height, start
+ for i=1, nofpages do
+ local page = pages[i]
+ local bbox = page.CropBox or page.MediaBox
+ local w, h = bbox[4]-bbox[2],bbox[3]-bbox[1]
+ if w ~= width or h ~= height then
+ if start then
+ report("cropbox > pages: %s-%s, width: %s, height: %s",start,i-1,width,height)
+ end
+ width, height, start = w, h, i
+ end
+ end
+ report("cropbox > pages: %s-%s, width: %s, height: %s",start,nofpages,width,height)
+ end
+end
+
+function scripts.pdf.metadata()
+ local filename = environment.files[1]
+ local pdffile = loadpdffile(filename)
+ if pdffile then
+ local catalog = pdffile.Catalog
+ local metadata = catalog.Metadata
+ if metadata then
+ report("metadata > \n\n%s\n",metadata())
+ else
+ report("no metadata")
+ end
+ end
+end
+
+if environment.argument("info") then
+ scripts.pdf.info()
+elseif environment.argument("metadata") then
+ scripts.pdf.metadata()
+else
+ application.help()
+end
+
+-- a variant on an experiment by hartmut
+
+--~ function downloadlinks(filename)
+--~ local document = lpdf.epdf.load(filename)
+--~ if document then
+--~ local pages = document.pages
+--~ for p = 1,#pages do
+--~ local annotations = pages[p].Annots
+--~ if annotations then
+--~ for a=1,#annotations do
+--~ local annotation = annotations[a]
+--~ local uri = annotation.Subtype == "Link" and annotation.A and annotation.A.URI
+--~ if uri and string.find(uri,"^http") then
+--~ os.execute("wget " .. uri)
+--~ end
+--~ end
+--~ end
+--~ end
+--~ end
+--~ end
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index 29665417e..158d11ecd 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -1350,7 +1350,7 @@ local utflinesplitter = utfbom^-1 * tsplitat(newline)
patterns.utflinesplitter = utflinesplitter
function string.utfsplitlines(str)
- return match(utflinesplitter,str)
+ return match(utflinesplitter,str or "")
end
@@ -3902,6 +3902,40 @@ end
+local P, C, R, Cs = lpeg.P, lpeg.C, lpeg.R, lpeg.Cs
+
+local one = P(1)
+local two = C(1) * C(1)
+local four = C(R(utfchar(0xD8),utfchar(0xFF))) * C(1) * C(1) * C(1)
+
+local pattern = P("\254\255") * Cs( (
+ four / function(a,b,c,d)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(a,b)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+ + P("\255\254") * Cs( (
+ four / function(b,a,d,c)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(b,a)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+
+function string.toutf(s)
+ return lpegmatch(pattern,s) or s -- todo: utf32
+end
+
+
end -- of closure
do -- create closure to overcome 200 locals limit
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index 29665417e..158d11ecd 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -1350,7 +1350,7 @@ local utflinesplitter = utfbom^-1 * tsplitat(newline)
patterns.utflinesplitter = utflinesplitter
function string.utfsplitlines(str)
- return match(utflinesplitter,str)
+ return match(utflinesplitter,str or "")
end
@@ -3902,6 +3902,40 @@ end
+local P, C, R, Cs = lpeg.P, lpeg.C, lpeg.R, lpeg.Cs
+
+local one = P(1)
+local two = C(1) * C(1)
+local four = C(R(utfchar(0xD8),utfchar(0xFF))) * C(1) * C(1) * C(1)
+
+local pattern = P("\254\255") * Cs( (
+ four / function(a,b,c,d)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(a,b)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+ + P("\255\254") * Cs( (
+ four / function(b,a,d,c)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(b,a)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+
+function string.toutf(s)
+ return lpegmatch(pattern,s) or s -- todo: utf32
+end
+
+
end -- of closure
do -- create closure to overcome 200 locals limit
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index 29665417e..158d11ecd 100644
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -1350,7 +1350,7 @@ local utflinesplitter = utfbom^-1 * tsplitat(newline)
patterns.utflinesplitter = utflinesplitter
function string.utfsplitlines(str)
- return match(utflinesplitter,str)
+ return match(utflinesplitter,str or "")
end
@@ -3902,6 +3902,40 @@ end
+local P, C, R, Cs = lpeg.P, lpeg.C, lpeg.R, lpeg.Cs
+
+local one = P(1)
+local two = C(1) * C(1)
+local four = C(R(utfchar(0xD8),utfchar(0xFF))) * C(1) * C(1) * C(1)
+
+local pattern = P("\254\255") * Cs( (
+ four / function(a,b,c,d)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(a,b)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+ + P("\255\254") * Cs( (
+ four / function(b,a,d,c)
+ local ab = 0xFF * byte(a) + byte(b)
+ local cd = 0xFF * byte(c) + byte(d)
+ return utfchar((ab-0xD800)*0x400 + (cd-0xDC00) + 0x10000)
+ end
+ + two / function(b,a)
+ return utfchar(byte(a)*256 + byte(b))
+ end
+ + one
+ )^1 )
+
+function string.toutf(s)
+ return lpegmatch(pattern,s) or s -- todo: utf32
+end
+
+
end -- of closure
do -- create closure to overcome 200 locals limit
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 13:10:39 +0000