From 5dd4f05089608a66c435d6be36d4bc93dc425986 Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Fri, 27 Sep 2019 18:35:47 +0300
Subject: Prework for HTML.

---
 example/filter_html.cpp   | 18 ++++++++++++++++++
 example/plain_to_html.cpp |  2 --
 src/html.cpp              | 48 ++++++++++++++++++++++++++++++++++++++++++-----
 src/html.hpp              |  3 +++
 src/plain.cpp             | 13 -------------
 src/plain.hpp             |  7 -------
 src/texo.cpp              |  8 ++++++--
 7 files changed, 70 insertions(+), 29 deletions(-)
 create mode 100644 example/filter_html.cpp

diff --git a/example/filter_html.cpp b/example/filter_html.cpp
new file mode 100644
index 0000000..ced8f5f
--- /dev/null
+++ b/example/filter_html.cpp
@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <html.hpp>
+#include <file.hpp>
+
+int main()
+{
+    TexoFileExporter exporter(stdout);
+    TexoHTMLProducer producer(exporter);
+    TexoHTMLImporter importer(producer);
+    importer.PutStr(
+        "<script>EVIL MAGIC</script>\n"
+        "<a href='#'>Some</a> br:<br/>\n"
+        "<p class='evil_too'>And paragraphs work well too...</p>\n"
+        "<b>You</b> <i>can</i> <del>use</del> <ins>some</ins> witchcraft.\n"
+    );
+    return 0;
+    return 0;
+}
diff --git a/example/plain_to_html.cpp b/example/plain_to_html.cpp
index 86171a6..9a81652 100644
--- a/example/plain_to_html.cpp
+++ b/example/plain_to_html.cpp
@@ -1,6 +1,4 @@
 #include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <html.hpp>
 #include <plain.hpp>
 #include <file.hpp>
diff --git a/src/html.cpp b/src/html.cpp
index 22209f5..c9e3cde 100644
--- a/src/html.cpp
+++ b/src/html.cpp
@@ -8,20 +8,58 @@ TexoHTMLProducer::TexoHTMLProducer(TexoExporter &exporter):
 void TexoHTMLProducer::Put(const Texo &piece)
 {
     switch (piece.type) {
-    case Texo::character:       exporter.Put(piece.c);    break;
-    case Texo::paragraph_begin: exporter.PutStr("<p>");   break;
-    case Texo::paragraph_end:   exporter.PutStr("</p>");  break;
-    case Texo::newline:         exporter.PutStr("<br/>");
+    case Texo::character:       exporter.Put(piece.c);     break;
+    case Texo::paragraph_begin: exporter.PutStr("<p>");    break;
+    case Texo::paragraph_end:   exporter.PutStr("</p>");   break;
+    case Texo::newline:         exporter.PutStr("<br/>");  break;
+    case Texo::bold_begin:      exporter.PutStr("<b>");    break;
+    case Texo::bold_end:        exporter.PutStr("</b>");   break;
+    case Texo::italic_begin:    exporter.PutStr("<i>");    break;
+    case Texo::italic_end:      exporter.PutStr("</i>");   break;
+    case Texo::strike_begin:    exporter.PutStr("<del>");  break;
+    case Texo::strike_end:      exporter.PutStr("</del>"); break;
+    case Texo::underline_begin: exporter.PutStr("<ins>");  break;
+    case Texo::underline_end:   exporter.PutStr("</ins>"); break;
+    case Texo::link_begin:      BeginLink(piece);          break;
+    case Texo::link_end:        exporter.PutStr("</a>");   break;
+    case Texo::image:           Image(piece);              break;
     default:                    break;
     }
 }
 
+void TexoHTMLProducer::BeginLink(const Texo &piece)
+{
+    exporter.PutStr("<a");
+    if (piece.link_url) {
+        exporter.PutStr(" href='");
+        exporter.PutStr(piece.link_url);
+        exporter.Put('\'');
+    }
+    exporter.Put('>');
+}
+
+void TexoHTMLProducer::Image(const Texo &piece)
+{
+    exporter.PutStr("<img");
+    if (piece.image_src) {
+        exporter.PutStr(" src='");
+        exporter.PutStr(piece.image_src);
+        exporter.Put('\'');
+    }
+    if (piece.image_alt) {
+        exporter.PutStr(" alt='");
+        exporter.PutStr(piece.image_alt);
+        exporter.Put('\'');
+    }
+    exporter.PutStr("/>");
+}
+
 
 TexoHTMLImporter::TexoHTMLImporter(TexoProducer &producer):
     TexoImporter(producer)
 {}
 
 void TexoHTMLImporter::Put(const char c)
-{
+{  // TODO by automata
     producer.Put(Texo(c));
 }
diff --git a/src/html.hpp b/src/html.hpp
index c5b2aa4..265ee39 100644
--- a/src/html.hpp
+++ b/src/html.hpp
@@ -8,6 +8,9 @@ class TexoHTMLProducer: public TexoProducer {
 public:
     TexoHTMLProducer(TexoExporter &exporter);
     void Put(const Texo &piece);
+private:
+    void BeginLink(const Texo &piece);
+    void Image(const Texo &piece);
 };
 
 
diff --git a/src/plain.cpp b/src/plain.cpp
index d8bc1b1..db5c63b 100644
--- a/src/plain.cpp
+++ b/src/plain.cpp
@@ -1,19 +1,6 @@
 #include "plain.hpp"
 
 
-TexoPlainProducer::TexoPlainProducer(TexoExporter &exporter):
-    TexoProducer(exporter)
-{}
-
-void TexoPlainProducer::Put(const Texo &piece)
-{
-    switch (piece.type) {
-    case Texo::character: exporter.Put(piece.c);
-    default:              break;
-    }
-}
-
-
 TexoPlainImporter::TexoPlainImporter(TexoProducer &producer):
     TexoImporter(producer), first(true), space(0), newline(false)
 {}
diff --git a/src/plain.hpp b/src/plain.hpp
index c5c613c..8c74bce 100644
--- a/src/plain.hpp
+++ b/src/plain.hpp
@@ -4,13 +4,6 @@
 #include "texo.hpp"
 
 
-class TexoPlainProducer: public TexoProducer {
-public:
-    TexoPlainProducer(TexoExporter &exporter);
-    void Put(const Texo &piece);
-};
-
-
 class TexoPlainImporter: public TexoImporter {
 public:
     TexoPlainImporter(TexoProducer &producer);
diff --git a/src/texo.cpp b/src/texo.cpp
index 1a2974a..03b31e7 100644
--- a/src/texo.cpp
+++ b/src/texo.cpp
@@ -1,9 +1,13 @@
 #include "texo.hpp"
 
 
-Texo::Texo(Type type): type(type), c(0)  {}
+Texo::Texo(Type type):
+    type(type), c(0), image_src(0), image_alt(0), link_url(0)
+{}
 
-Texo::Texo(const char c): type(character), c(c)  {}
+Texo::Texo(const char c):
+    type(character), c(c), image_src(0), image_alt(0), link_url(0)
+{}
 
 
 void TexoExporter::PutStr(const char *str)
-- 
cgit v1.2.3