From 2c12c0652d2b8c8440e1e908f004826840ed14ab Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Fri, 18 Oct 2019 17:33:06 +0300
Subject: [texo] Semi-working.

---
 src/plain.cpp | 174 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 174 insertions(+)

(limited to 'src/plain.cpp')

diff --git a/src/plain.cpp b/src/plain.cpp
index b510d58..bff9398 100644
--- a/src/plain.cpp
+++ b/src/plain.cpp
@@ -1 +1,175 @@
 #include "plain.hpp"
+
+
+TexoProducerPlain::TexoProducerPlain(TexoExporter &exporter):
+    TexoProducer(exporter)
+{}
+
+void TexoProducerPlain::Put(const Texo &piece)
+{
+    if (quoted && piece.c == '\n') {
+        exporter.Put("\n> ");
+    } else {
+        exporter.Put(piece.c);
+    }
+}
+
+void TexoProducerPlain::Put(const TexoHeader &piece)
+{
+    if (!piece.closing) {
+        exporter.Put("\n\n# ");
+    }
+}
+
+void TexoProducerPlain::Put(const TexoParagraph &piece)
+{
+    if (piece.closing) {
+        exporter.Put("\n\n");
+    }
+}
+
+void TexoProducerPlain::Put(const TexoQuote &piece)
+{
+    if (piece.closing) {
+        quoted = false;
+        exporter.Put("\n\n");
+    } else {
+        quoted = true;
+        exporter.Put("\n\n> ");
+    }
+}
+
+void TexoProducerPlain::Put(const TexoLineBreak &piece)
+{
+    exporter.Put(" \n");
+}
+
+void TexoProducerPlain::Put(const TexoHorizontalRule &piece)
+{
+    exporter.Put("\n--------------------------------------------------\n");
+}
+
+
+TexoImporterPlain::TexoImporterPlain(TexoProducer &producer):
+    TexoImporter(producer), state(text)
+{
+    producer.Put(TexoParagraph());
+}
+
+TexoImporterPlain::~TexoImporterPlain()
+{
+    switch (state) {
+    case text: case space: case newline:
+        producer.Put(TexoParagraph(true));
+        break;
+    case quote: case quote_newline:
+        producer.Put(TexoQuote(true));
+        break;
+    case header:
+        producer.Put(TexoHeader(true));
+        break;
+    case paragraph:
+        break;
+    }
+}
+
+void TexoImporterPlain::Put(char c)
+{
+    switch (state) {
+    case text:                Text(c);              break;
+    case space:               Space(c);             break;
+    case newline:             Newline(c);           break;
+    case paragraph:           Paragraph(c);         break;
+    case quote:               Quote(c);             break;
+    case quote_newline:       QuoteNewline(c);      break;
+    case header:              Header(c);            break;
+    }
+}
+
+void TexoImporterPlain::Put(const ScriptVariable &str)
+{
+    TexoImporter::Put(str);
+}
+
+void TexoImporterPlain::Text(char c)
+{
+    switch (c) {
+    case ' ':  state = space;         break;
+    case '\n': state = newline;       break;
+    default:   producer.Put(Texo(c)); break;
+    }
+}
+
+void TexoImporterPlain::Space(char c)
+{
+    if (c == '\n') {
+        producer.Put(TexoLineBreak());
+        state = text;
+    } else if (c == ' ') {
+        producer.Put(Texo(' '));
+    } else {
+        producer.Put(Texo(' '));
+        producer.Put(Texo(c));
+        state = text;
+    }
+}
+
+void TexoImporterPlain::Newline(char c)
+{
+    if (c == '\n') {
+        producer.Put(TexoParagraph(true));
+        state = paragraph;
+    } else {
+        producer.Put(Texo('\n'));
+        producer.Put(Texo(c));
+        state = text;
+    }
+}
+
+void TexoImporterPlain::Paragraph(char c)
+{
+    if (c == '>') {
+        producer.Put(TexoQuote());
+        state = quote;
+    } else if (c == '#') {
+        producer.Put(TexoHeader(1));
+        state = header;
+    } else {
+        producer.Put(TexoParagraph());
+        producer.Put(Texo(c));
+        state = text;
+    }
+}
+
+void TexoImporterPlain::Quote(char c)
+{
+    switch (c) {
+    case '\n': state = quote_newline; break;
+    default:   producer.Put(Texo(c)); break;
+    }
+}
+
+void TexoImporterPlain::QuoteNewline(char c)
+{
+    if (c == '>') {
+        state = quote;
+    } else if (c == '\n') {
+        producer.Put(TexoQuote(true));
+        state = paragraph;
+    } else {
+        producer.Put(TexoQuote(true));
+        producer.Put(TexoParagraph());
+        producer.Put(Texo(c));
+        state = text;
+    }
+}
+
+void TexoImporterPlain::Header(char c)
+{
+    if (c == '\n') {
+        producer.Put(TexoHeader(1, true));
+        state = paragraph;
+    } else {
+        producer.Put(Texo(c));
+    }
+}
-- 
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