From: fred <fred>
Date: Thu, 20 Feb 1997 19:40:09 +0000 (+0000)
Subject: flower-1.1.1
X-Git-Tag: release/1.5.59~6308
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=f0c9e4660288865baa4ae71c296966a9f4e3415a;p=lilypond.git

flower-1.1.1
---

diff --git a/flower/stringdata.hh b/flower/stringdata.hh
new file mode 100644
index 0000000000..ba9099c440
--- /dev/null
+++ b/flower/stringdata.hh
@@ -0,0 +1,94 @@
+/*
+  stringdata.hh -- declare  String_data
+
+  source file of the LilyPond music typesetter
+
+  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
+
+#ifndef STRINGDATA_HH
+#define STRINGDATA_HH
+
+
+/**Internal String struct.
+   the data itself. Handles simple tasks (resizing, resetting)
+   */
+class String_data {
+    // GNU malloc: storage overhead is 8 bytes anyway.
+
+friend class String_handle;
+    int maxlen;	// maxlen is arraysize-1
+    
+    int length_i_;
+    Byte* data_byte_p_;
+    int references;
+
+    /// init to ""
+    String_data();
+
+    /// init from src. Conservative allocation.
+    String_data(String_data const &src); 
+    
+    ~String_data();
+
+    /** POST: maxlen >= j.
+      @param j, maximum stringlength_i_.    
+      contents thrown away.
+    */
+    void setmax(int j);
+    
+    /** POST: maxlen >= j.
+      @param j, maximum stringlength_i_.
+      contents are kept if it grows.
+      */
+    void remax(int j);
+
+    /// check if writeable.
+    void OKW();
+
+    /// check state.
+    void OK();
+
+    /// reduce memory usage.
+    void tighten();
+
+    // assignment.
+    void set( Byte const* byte_c_l, int length_i );
+
+    void set( char const* ch_c_l );
+    
+    /// concatenation.
+    void append( Byte const* byte_c_l, int length_i );
+
+    void operator += ( char const* ch_c_l );
+
+    char const* ch_c_l() const; 
+
+    char* ch_l();
+
+    Byte const* byte_c_l() const;
+
+    // idem, non const
+    Byte* byte_l();
+
+    void trunc(int j);
+
+    /** access element. not really safe. Can alter length_i_ without
+      #String_data# knowing it.  */
+    Byte &operator [](int j);
+    Byte operator [](int j) const;
+};
+
+
+
+#ifdef STRING_UTILS_INLINED
+#ifndef INLINE
+#define INLINE inline
+#endif
+#include "stringdata.inl"
+
+#endif
+
+
+#endif // STRING_DATA_HH
diff --git a/flower/stringhandle.hh b/flower/stringhandle.hh
new file mode 100644
index 0000000000..df92e50216
--- /dev/null
+++ b/flower/stringhandle.hh
@@ -0,0 +1,70 @@
+/*
+  stringhandle.hh -- declare String_handle
+
+  source file of the LilyPond music typesetter
+
+  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
+
+#ifndef STRINGHANDLE_HH
+#define STRINGHANDLE_HH
+#include "fproto.hh"
+
+
+/**
+  Reference counting for strings.
+  
+   handles ref. counting, and provides a very thin interface using
+   Byte *
+
+   */
+class String_handle {
+    String_data* data;
+    
+    /// decrease ref count. Named kind of like a Tanenbaum semafore 
+    void down();
+
+    /// increase ref count
+    void up(String_data *d);
+    
+    /** make sure data has only one reference.      
+       POST: data->references == 1
+      */
+    void copy();
+    
+public:
+    String_handle();
+    ~String_handle();
+    String_handle(String_handle const & src);
+
+    Byte const* byte_c_l() const;
+    char const* ch_c_l() const;
+    Byte* byte_l();
+    char* ch_l();
+
+    void operator =(String_handle const &src);
+    void operator += (char const *s);
+    Byte operator[](int j) const;
+
+    /** Access elements. WARNING: NOT SAFE
+       don't use this for loops. Use byte_c_l()
+       */
+    Byte &operator[](int j);
+    void append( Byte const* byte_c_l, int length_i );
+    void set( Byte const* byte_c_l, int length_i );
+    void operator = (char const *p);
+    void trunc(int j);
+    int length_i() const;
+};
+
+#ifdef STRING_UTILS_INLINED
+#ifndef INLINE
+#define INLINE inline
+#endif
+#include "stringhandle.inl"
+/* we should be resetting INLINE. oh well. */
+#endif
+
+
+#endif // STRINGHANDLE_HH