Moved Reader to FoundationEx

3 files changed, 177 insertions, 0 deletions

diff --git a/FoundationEx/CMakeLists.txt b/FoundationEx/CMakeLists.txt
index 497c732..71dd25d 100644
--- a/FoundationEx/CMakeLists.txt
+++ b/FoundationEx/CMakeLists.txt
@@ -2,6 +2,7 @@ project(FoundationEx)
 add_library(
 	FoundationEx
 	STATIC
+	Reader.cpp
 	Text.cpp
 	Utils.cpp
 	)
diff --git a/FoundationEx/Reader.cpp b/FoundationEx/Reader.cpp
new file mode 100644
index 0000000..682627d
--- /dev/null
+++ b/FoundationEx/Reader.cpp
@@ -0,0 +1,109 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+     AUTHOR:       John DiCamillo
+
+
+     OVERVIEW
+     ========
+     Implementation of the Reader class
+*/
+
+#include "Reader.h"
+#include <stdio.h>
+#include <fstream>
+#include <ctype.h>
+#include "Utils.h"
+
+// +-------------------------------------------------------------------+
+
+Text
+ConsoleReader::more()
+{
+    // loop until the user types something
+    do {
+        printPrimaryPrompt();
+        fillInputBuffer();
+    } while (! *p);
+
+    return Text(p);
+}
+
+void
+ConsoleReader::printPrimaryPrompt()
+{
+    printf("- ");
+}
+
+void
+ConsoleReader::fillInputBuffer()
+{
+    fgets(buffer, 980, stdin);
+    p = buffer;
+    while (isspace(*p)) p++;
+}
+
+// +-------------------------------------------------------------------+
+
+FileReader::FileReader(const char* fname)
+    : filename(fname), done(0)
+{ }
+
+Text
+FileReader::more()
+{
+    if (done) return Text();
+
+    std::fstream fin(filename, std::fstream::in);
+
+    if (!fin) {
+        Print("ERROR(Parse): Could not open file '%s'\n", filename.data());
+        return Text();
+    }
+
+    Text result;
+    char buf[1000], newline;
+
+    while (fin.get(buf, 1000)) {
+        result.append(buf);
+        fin.get(newline);
+        result.append(newline);
+    }
+
+    done = 1;
+    return result;
+}
+
+// +-------------------------------------------------------------------+
+
+BlockReader::BlockReader(const char* block)
+    : data((char*) block), done(0), length(0)
+{ }
+
+BlockReader::BlockReader(const char* block, int len)
+    : data((char*) block), done(0), length(len)
+{ }
+
+Text
+BlockReader::more()
+{
+    if (done) return Text();
+
+    if (length) {
+        Text result(data, length);
+        done = 1;
+        return result;
+    }
+    else if (data) {
+        Text result(data);
+        done = 1;
+        return result;
+    }
+
+    done = 1;
+    return Text();
+}
+
+
diff --git a/FoundationEx/Reader.h b/FoundationEx/Reader.h
new file mode 100644
index 0000000..e1154d1
--- /dev/null
+++ b/FoundationEx/Reader.h
@@ -0,0 +1,67 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+     AUTHOR:       John DiCamillo
+
+
+     OVERVIEW
+     ========
+     Declaration of the Reader class
+*/
+
+#ifndef READER_H
+#define READER_H
+
+#include "Text.h"
+
+// +-------------------------------------------------------------------+
+
+class Reader
+{
+public:
+    Reader()          { }
+    virtual ~Reader() { }
+
+    virtual Text more() = 0;
+};
+
+class ConsoleReader : public Reader
+{
+public:
+    virtual Text more();
+
+    void printPrimaryPrompt();
+    void fillInputBuffer();
+
+private:
+    char  buffer[1000];
+    char* p;
+};
+
+class FileReader : public Reader
+{
+public:
+    FileReader(const char* fname);
+    virtual Text more();
+
+private:
+    Text filename;
+    int  done;
+};
+
+class BlockReader : public Reader
+{
+public:
+    BlockReader(const char* block);
+    BlockReader(const char* block, int len);
+    virtual Text more();
+
+private:
+    char* data;
+    int   done;
+    int   length;
+};
+
+#endif