From: Paul Hänsch <paul@plutz.net>
Date: Sun, 26 Jun 2022 16:28:56 +0000 (+0200)
Subject: Implemented pandoc grid tables
X-Git-Url: https://git.plutz.net/?p=cgilite;a=commitdiff_plain;h=aa80431f1f666e6a2180226b5dbd683f2c2021b9

Implemented pandoc grid tables
---

diff --git a/markdown.awk b/markdown.awk
index 6271996..b86cd84 100755
--- a/markdown.awk
+++ b/markdown.awk
@@ -42,10 +42,10 @@
 # - [x] Automatic heading identifiers (custom)
 # - [x] Fenced code blocks (php md, pandoc)
 #   - [x] Fenced code attributes
-# - [ ] Tables
+# - [/] Tables
 #   -  ?  Simple table (pandoc)
 #   -  ?  Multiline table (pandoc)
-#   -  ?  Grid table (pandoc)
+#   - [x] Grid table (pandoc)
 #   - [x] Pipe table (php md pandoc)
 # - [x] Line blocks (pandoc)
 # - [x] Task lists (pandoc, custom)
@@ -303,7 +303,7 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
     len = RLENGTH; st = RSTART;
     #initialize empty arrays
     split("", talign); split("", tarray);
-    cols = 0; ttext = ""; cnt=0;
+    cols = 0; cnt=0; ttext = "";
 
     # table header and alignment
     split( gensub( /(^\||\|$)/, "", "g", \
@@ -343,6 +343,68 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
     }
     return "<table>" ttext "</tbody></table>\n" _block( substr(block, len + 1) );
 
+  # Grid Tables (pandoc)
+  } else if ( match(block, "^\\+(-+\\+)+\n" \
+                       "(\\|([^\n]+\\|)+\n)+" \
+                        "\\+(:?=+:?\\+)+\n" \
+                      "((\\|([^\n]+\\|)+\n)+" \
+                            "\\+(-+\\+)+(\n|$))+" \
+            ) ) {
+    len = RLENGTH; st = RSTART;
+    #initialize empty arrays
+    split("", talign); split("", tarray); split("", tread);
+    cols = 0; cnt=0; ttext = "";
+
+    # table header and alignment
+    block = substr(block, match(block, /(\n|$)/) + 1 );
+    while ( match(block, "^\\|([^\n]+\\|)+\n") ) {
+      cols = split( gensub( /(^\||\|$)/, "", "g", \
+             gensub( /(^|[^\\])\\\|/, "\\1\\&#x7C;", "g", \
+             substr(block, 1, match(block, /(\n|$)/)) \
+      )), tread, /\|/);
+      block = substr(block, match(block, /(\n|$)/) + 1 );
+      for (cnt = 1; cnt < cols; cnt++)
+        tarray[cnt] = tarray[cnt] "\n" tread[cnt];
+    }
+
+    cols = split( \
+           gensub( /(^\+|\+$)/, "", "g", \
+           substr(block, 1, match(block, /(\n|$)/)) \
+    ), talign, /\+/);
+    block = substr(block, match(block, /(\n|$)/) + 1 );
+
+    for (cnt = 1; cnt < cols; cnt++) {
+           if (match(talign[cnt], /:=+:/)) talign[cnt]="center";
+      else if (match(talign[cnt],  /=+:/)) talign[cnt]="right";
+      else if (match(talign[cnt], /:=+/ )) talign[cnt]="left";
+      else talign[cnt]="";
+    }
+
+    ttext = "<thead>\n<tr>"
+    for (cnt = 1; cnt < cols; cnt++)
+      ttext = ttext "<th align=\"" talign[cnt] "\">" _block(tarray[cnt]) "</th>"
+    ttext = ttext "</tr>\n</thead><tbody>\n"
+
+    while ( match(block, /^((\|([^\n]+\|)+\n)+\+(-+\+)+(\n|$))+/ ) ){
+      split("", tarray);
+      while ( match(block, /^\|([^\n]+\|)+\n/) ) {
+        split( gensub( /(^\||\|$)/, "", "g", \
+               gensub( /(^|[^\\])\\\|/, "\\1\\&#x7C;", "g", \
+               substr(block, 1, match(block, /(\n|$)/)) \
+        )), tread, /\|/);
+        block = substr(block, match(block, /(\n|$)/) + 1 );
+        for (cnt = 1; cnt < cols; cnt++)
+          tarray[cnt] = tarray[cnt] "\n" tread[cnt];
+      }
+      block = substr(block, match(block, /(\n|$)/) + 1 );
+
+      ttext = ttext "<tr>"
+      for (cnt = 1; cnt < cols; cnt++)
+        ttext = ttext "<td align=\"" talign[cnt] "\">" _block(tarray[cnt]) "</td>"
+      ttext = ttext "</tr>\n"
+    }
+    return "<table>" ttext "</tbody></table>\n" _block( substr(block, len + 1) );
+
   # Line Blocks (pandoc)
   } else if ( match(block, /^\| [^\n]*(\n|$)(\| [^\n]*(\n|$)|[ \t]+[^\n[:space:]][^\n]*(\n|$))*/) ) {
     len = RLENGTH; st = RSTART;