From 9dd3960e6e5e4f6f1519c6dd59f118ed10bcc874 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph.amissah@gmail.com>
Date: Thu, 2 Apr 2020 15:39:43 -0400
Subject: cgi search form, highlight matched text

- complication where match foun in url link
---
 src/doc_reform/io_out/cgi_sqlite_search_form.d | 56 +++++++++++++++++++++++---
 1 file changed, 50 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/doc_reform/io_out/cgi_sqlite_search_form.d b/src/doc_reform/io_out/cgi_sqlite_search_form.d
index 31cab66..4523c2d 100644
--- a/src/doc_reform/io_out/cgi_sqlite_search_form.d
+++ b/src/doc_reform/io_out/cgi_sqlite_search_form.d
@@ -1217,6 +1217,45 @@ void cgi_function_intro(Cgi cgi) {
       return sql_match_offset_count;
     }
     void sql_search_query() {
+      string highlight_text_matched(string _txt, string search_field) {
+        string _mark_open   = "┤";
+        string _mark_close  = "├";
+        string _span_yellow = "<span style=\"background-color: #ffff48\">";
+        string _span_red    = "<span style=\"background-color: #ff48ff\">";
+        string _span_blue   = "<span style=\"background-color: #48ffff\">";
+        string _span_close  = "</span>";
+        string _sf_str      = search_field.strip.split("%%20").join(" ").strip;
+        string[] _sf_arr    = _sf_str.split(regex(r"\s+AND\s+|\s+OR\s+"));
+        auto rgx_url        = regex(r"<a href=[^>]+?>");
+        foreach (_sf; _sf_arr) {
+          auto rgx_matched_text = regex(_sf, "i");
+          auto rgx_marked_pair  = regex(r"┤(?P<keep>" ~ _sf ~ ")├", "i");
+          if (auto m = _txt.matchFirst(rgx_url)) {
+            _txt = replaceAll!(m =>
+                _mark_open
+                ~  m.captures[0]
+                ~ _mark_close
+              )(_txt, rgx_matched_text);
+            _txt = replaceAll!(m =>
+                replaceAll!(u =>
+                  u["keep"]
+                )(m.hit, rgx_marked_pair)
+              )(_txt, rgx_url);
+            _txt = replaceAll!(m =>
+                _span_yellow
+                ~  m["keep"]
+                ~ _span_close
+              )(_txt, rgx_marked_pair);
+          } else {
+            _txt = replaceAll!(m =>
+                _span_yellow
+                ~  m.captures[0]
+                ~ _span_close
+              )(_txt, rgx_matched_text);
+          }
+        }
+        return _txt;
+      }
       string select_field_like(string db_field, string search_field) {
         string where_ = "";
         if (!(search_field.empty)) {
@@ -1332,7 +1371,7 @@ LIMIT %%s OFFSET %%s
                   ~ row["ocn"].as!string
                 ~ "</a>"
                 ~ "<br>"
-                ~ row["body"].as!string
+                ~ highlight_text_matched(row["body"].as!string, tf.text)
               );
             } else {
               cgi.write(
@@ -1344,7 +1383,7 @@ LIMIT %%s OFFSET %%s
                   ~ row["ocn"].as!string
                 ~ "</a>"
                 ~ "<br>"
-                ~ row["body"].as!string
+                ~ highlight_text_matched(row["body"].as!string, tf.text)
               );
             }
           } else {
@@ -1446,18 +1485,23 @@ configuration "default" {
         // Handle error
       }
     }
-    { // cgi.d
+    { // get cgi.d
       import std.net.curl, std.stdio;
+      char[] cgi_d;
       try {
-        auto cgi_d = get("https://raw.githubusercontent.com/adamdruppe/arsd/master/cgi.d");
+        cgi_d = get!HTTP("https://raw.githubusercontent.com/adamdruppe/arsd/master/cgi.d");
+      } catch (ErrnoException ex) {
+        // Handle error
+        // CurlCode perform(ThrowOnError throwOnError = Yes.throwOnError);
+        CurlCode perform(ThrowOnError throwOnError = No.throwOnError);
+      }
+      if (cgi_d && cgi_d.length > 0) {
         try {
           auto f = File(pth_sqlite_cgi.cgi_d_path_out, "w");
           f.write(cgi_d);
         } catch (ErrnoException ex) {
           // Handle error
         }
-      } catch (ErrnoException ex) {
-        // Handle error
       }
     }
   }
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