From 40c07d15d81cd6c4a57dfd8ecd975764eef5deff Mon Sep 17 00:00:00 2001
From: Benjamin VAUDOUR <b.vaudour@luence.fr>
Date: Wed, 22 Dec 2021 12:32:38 +0000
Subject: [PATCH] =?UTF-8?q?impl=C3=A9mentation=20de=20la=20sous-commande?=
 =?UTF-8?q?=20info?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 aliases/pdf.elv | 117 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 116 insertions(+), 1 deletion(-)

diff --git a/aliases/pdf.elv b/aliases/pdf.elv
index 4c1601a..6ff745b 100644
--- a/aliases/pdf.elv
+++ b/aliases/pdf.elv
@@ -1,5 +1,7 @@
 use moi/util/format
 use moi/util/pdf
+use math
+use path
 use re
 use str
 
@@ -228,6 +230,119 @@ fn unzip {|@args|
   }
 }
 
+fn -pts2cm {|v|
+  / (math:round (* $v 3.52778)) 100
+}
+
+fn -date {|raw|
+  var y m d = $raw[2..6] $raw[6..8] $raw[8..10]
+  var h n s = $raw[10..12] $raw[12..14] $raw[14..16]
+  var rest  = []
+  if (> (count $raw[16..]) 0) {
+    set @rest = (str:split "'" $raw[16..])
+  }
+  var tz    = '+00:00'
+  if (> (count $rest) 0) {
+    var tz = $rest[0]
+    if (eq $tz[0] 'Z') {
+      set tz = $tz[1..]
+    }
+    if (eq $tz '') {
+      set tz = '00'
+    }
+    if (and (not-eq $tz[0] '+') (not-eq $tz[0] '-')) {
+      set tz = (printf '+%s' $tz)
+    }
+    var mm = '00'
+    if (and (> (count $rest) 1) (pdf:is-number $rest[1])) {
+      set mm = $rest[1]
+    }
+    set tz = (printf '%s:%s' $tz $mm)
+  }
+  var date = (printf ^
+    '%s-%s-%sT%s:%s:%sZ%s' ^
+    $y $m $d ^
+    $h $n $s ^
+    $tz)
+  date --date $date
+}
+
+fn info {|@args|
+  if (!= (count $args) 1) {
+    fail 'info doit contenir un paramètre'
+  }
+  var in @_ = $@args
+  -must-pdf-exist $in
+  var json     = (pdf:json $in)
+  var objects  = $json[objects]
+  var trailer  = $objects[trailer]
+  var infos    = $objects[$trailer[/Info]]
+  var pages    = $json[pages]
+  var p1       = $objects[$pages[0][object]]
+  var w h      = (all $p1[/MediaBox][2..] | each $-pts2cm~)
+  var layout   = 'Portrait'
+  var title    = ''
+  var subject  = ''
+  var author   = ''
+  var creator  = ''
+  var producer = ''
+  var mdate    = ''
+  var crypted  = 'Non'
+  var hasform  = 'Non'
+  if (> $w $h) {
+    set layout = 'Paysage'
+  }
+  if (has-key $infos '/Title') {
+    set title = $infos[/Title]
+  }
+  if (has-key $infos '/Subject') {
+    set subject = $infos[/Subject]
+  }
+  if (has-key $infos '/Author') {
+    set author = $infos[/Author]
+  }
+  if (has-key $infos '/Creator') {
+    set creator = $infos[/Creator]
+  }
+  if (has-key $infos '/Producer') {
+    set producer = $infos[/Producer]
+  }
+  if (has-key $infos '/ModDate') {
+    set mdate = (-date $infos[/ModDate])
+  }
+  if (pdf:encryption $in)[encrypted] {
+    set crypted = 'Oui'
+  }
+  if (pdf:form $in)[hasacroform] {
+    set hasform = 'Oui'
+  }
+  var data    = [
+    [&k='Chemin'               &v=(path:abs $in)]
+    [&k='Taille'               &v=(format:size (stat -c '%s' $in))]
+    [&k='Version PDF'          &v=(pdf:version $in)]
+    [&k='Nombre de pages'      &v=(count $pages)]
+    [&k='Format des pages'     &v=(printf '%sx%s cm (%s)' $w $h $layout)]
+    [&k='Titre'                &v=$title]
+    [&k='Subjet'               &v=$subject]
+    [&k='Auteur'               &v=$author]
+    [&k='Créateur'             &v=$creator]
+    [&k='producteur'           &v=$producer]
+    [&k='Date de création'     &v=(-date $infos[/CreationDate])]
+    [&k='Date de modification' &v=$mdate]
+    [&k='Chiffré'              &v=$crypted]
+    [&k='Acroform'             &v=$hasform]
+  ]
+  var label  = (format:repeat 21 ' ')
+  var @props = (format:column &align=right k $label) (format:column v $label)
+  set props  = (format:update-props $props $data)
+  var sep    = (format:repeat (+ $props[0][size] $props[1][size] 3) '.')
+  var @part  = $data[..5] $data[5..12] $data[12..]
+  each {|d|
+    format:list &with-header=$false &csep=' : ' &recompute=$false $props $d
+    echo $sep
+  } $part
+}
+
 edit:add-var pdf~ {|action @args|
   var actions = [
     &help=$help~
@@ -242,7 +357,7 @@ edit:add-var pdf~ {|action @args|
     &cut=$split-at~
     &zip=$zip~
     &unzip=$unzip~
-    #&info=$info~
+    &info=$info~
     #&list=$list~
     #&extract=$extract~
   ]