From d249b25df1f48cc102a854da4ac053b9d0e2bf89 Mon Sep 17 00:00:00 2001
From: Jaidyn Ann <jadedctrl@teknik.io>
Date: Sat, 4 Jun 2022 11:33:30 -0500
Subject: [PATCH] Use DarkWyrm's TextFile from Paladin

---
 Makefile         |   3 +-
 src/Song.cpp     |  25 ++++++-----
 src/TextFile.cpp | 109 +++++++++++++++++++++++++++++++++++++++++++++++
 src/TextFile.h   |  30 +++++++++++++
 4 files changed, 153 insertions(+), 14 deletions(-)
 create mode 100644 src/TextFile.cpp
 create mode 100644 src/TextFile.h

diff --git a/Makefile b/Makefile
index 3becb40..a7b965a 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,8 @@ SRCS = src/App.cpp \
 	src/MainWindow.cpp \
 	src/MediaPlayer.cpp \
 	src/ReplicantView.cpp \
-	src/Song.cpp
+	src/Song.cpp \
+	src/TextFile.cpp
 
 #	Specify the resource definition files to use. Full or relative paths can be
 #	used.
diff --git a/src/Song.cpp b/src/Song.cpp
index 550d123..75a7fee 100644
--- a/src/Song.cpp
+++ b/src/Song.cpp
@@ -5,13 +5,13 @@
 
 #include "Song.h"
 
-#include <iostream>
-
 #include <Directory.h>
 #include <File.h>
 #include <String.h>
 #include <TranslationUtils.h>
 
+#include "TextFile.h"
+
 
 Song::Song()
 {
@@ -35,18 +35,17 @@ Song::InitCheck()
 status_t
 Song::Lyrics(BString* buffer)
 {
-	BFile file(_LyricsPath().Path(), B_READ_ONLY);
+	TextFile file(_LyricsPath().Path(), B_READ_ONLY);
 
-	off_t size = 0;
-	char* buf = NULL;
-	if (file.InitCheck() == B_OK && file.GetSize(&size) == B_OK) {
-		buf = (char*)malloc((size_t)size);
-		file.Read(buf, size);
-		*buffer << buf;
-		free(buf);
-	} else
-		*buffer = "No lyrics available.\n";
-	return B_OK;
+	if (file.InitCheck() == B_OK) {
+		const char* line = file.ReadLine();
+		while (line != NULL) {
+			*buffer << line << '\n';
+			line = file.ReadLine();
+		}
+	}
+
+	return file.InitCheck();
 }
 
 
diff --git a/src/TextFile.cpp b/src/TextFile.cpp
new file mode 100644
index 0000000..ca4ef0e
--- /dev/null
+++ b/src/TextFile.cpp
@@ -0,0 +1,109 @@
+/*
+	TextFile.cpp: Buffered line-based access to text files
+	Written by DarkWyrm, Copyright 2007
+	Released under the MIT license.
+*/
+#include "TextFile.h"
+#include <stdio.h>
+#include <OS.h>
+#include <string.h>
+
+TextFile::TextFile(void)
+	:	BFile()
+{
+	InitObject();
+}
+
+
+TextFile::TextFile(const char *path, const uint32 &openmode)
+	:	BFile(path,openmode)
+{
+	InitObject();
+}
+
+
+TextFile::TextFile(const entry_ref &ref, const uint32 &openmode)
+	:	BFile(&ref,openmode)
+{
+	InitObject();
+}
+
+
+TextFile::~TextFile(void)
+{
+	delete [] fBuffer;
+	delete [] fReadBuffer;
+}
+
+
+void
+TextFile::InitObject(void)
+{
+	fReadBuffer = new char[4096];
+	fReadBufferSize = 4096;
+	
+	if (InitCheck() == B_OK) {
+		GetSize(&fBufferSize);
+		fBuffer = new char[fBufferSize+1];
+		
+		Read(fBuffer,fBufferSize);
+		Seek(0,SEEK_SET);
+		
+		fBuffer[fBufferSize]=0;
+	} else {
+		fBuffer = NULL;
+		fBufferSize = 0;
+	}
+}
+
+
+const char *
+TextFile::ReadLine(void)
+{
+	off_t pos = Position();
+	off_t size = -1;
+	if (GetSize(&size) != B_OK || pos >= size)
+		return NULL;
+
+	
+	char *c = fBuffer;
+	c += sizeof(char) * pos;
+	
+	char *eol = strchr(c,'\n');
+	
+	if (!eol) {
+		// This means that there are no more linefeeds before the the
+		// end of the file
+		eol = strchr(c,'\0');
+		if (!eol)
+			return NULL;
+	}
+	
+	int32 length = eol-c;
+	
+	if (length > fReadBufferSize) {
+		fReadBufferSize = length;
+		delete fReadBuffer;
+		fReadBuffer = new char[fReadBufferSize];
+	}
+	
+	strncpy(fReadBuffer,c,length);
+	fReadBuffer[length] = 0;
+	
+	Seek(length + 1, SEEK_CUR);
+	
+	// do we need to add a \0?
+	return fReadBuffer;
+}
+
+
+ssize_t
+TextFile::WriteString(const char *string)
+{
+	if (!string)
+		return B_ERROR;
+	
+	size_t size = strlen(string);
+	return Write(string, size);
+}
+
diff --git a/src/TextFile.h b/src/TextFile.h
new file mode 100644
index 0000000..0cb0a89
--- /dev/null
+++ b/src/TextFile.h
@@ -0,0 +1,30 @@
+/*
+	TextFile.h: Buffered line-based access to text files
+	Written by DarkWyrm, Copyright 2007
+	Released under the MIT license.
+*/
+#ifndef TEXTFILE_H
+#define TEXTFILE_H
+
+#include <File.h>
+
+class TextFile : public BFile
+{
+public:
+					TextFile(void);
+					TextFile(const char *path, const uint32 &openmode);
+					TextFile(const entry_ref &ref, const uint32 &openmode);
+					~TextFile(void);
+	const char *	ReadLine(void);
+	ssize_t			WriteString(const char *string);
+	
+private:
+	void			InitObject(void);
+	
+	char			*fBuffer;
+	off_t			fBufferSize;
+	char			*fReadBuffer;
+	int32			fReadBufferSize;
+};
+
+#endif