More files related to user-level file servers.

Also add acme!

1 files changed, 101 insertions, 0 deletions

diff --git a/src/cmd/acme/edit.h b/src/cmd/acme/edit.h
new file mode 100644
index 00000000..efa0b02e
--- /dev/null
+++ b/src/cmd/acme/edit.h
@@ -0,0 +1,101 @@
+/*#pragma	varargck	argpos	editerror	1*/
+
+typedef struct Addr	Addr;
+typedef struct Address	Address;
+typedef struct Cmd	Cmd;
+typedef struct List	List;
+typedef struct String	String;
+
+struct String
+{
+	int	n;		/* excludes NUL */
+	Rune	*r;		/* includes NUL */
+	int	nalloc;
+};
+
+struct Addr
+{
+	char	type;	/* # (char addr), l (line addr), / ? . $ + - , ; */
+	union{
+		String	*re;
+		Addr	*left;		/* left side of , and ; */
+	} u;
+	ulong	num;
+	Addr	*next;			/* or right side of , and ; */
+};
+
+struct Address
+{
+	Range	r;
+	File	*f;
+};
+
+struct Cmd
+{
+	Addr	*addr;			/* address (range of text) */
+	String	*re;			/* regular expression for e.g. 'x' */
+	union{
+		Cmd	*cmd;		/* target of x, g, {, etc. */
+		String	*text;		/* text of a, c, i; rhs of s */
+		Addr	*mtaddr;		/* address for m, t */
+	} u;
+	Cmd	*next;			/* pointer to next element in {} */
+	short	num;
+	ushort	flag;			/* whatever */
+	ushort	cmdc;			/* command character; 'x' etc. */
+};
+
+extern struct cmdtab{
+	ushort	cmdc;		/* command character */
+	uchar	text;		/* takes a textual argument? */
+	uchar	regexp;		/* takes a regular expression? */
+	uchar	addr;		/* takes an address (m or t)? */
+	uchar	defcmd;		/* default command; 0==>none */
+	uchar	defaddr;	/* default address */
+	uchar	count;		/* takes a count e.g. s2/// */
+	char	*token;		/* takes text terminated by one of these */
+	int	(*fn)(Text*, Cmd*);	/* function to call with parse tree */
+}cmdtab[];
+
+#define	INCR	25	/* delta when growing list */
+
+struct List	/* code depends on a long being able to hold a pointer */
+{
+	int	nalloc;
+	int	nused;
+	union{
+		void	*listptr;
+		Block	*blkptr;
+		long	*longptr;
+		uchar*	*ucharptr;
+		String*	*stringptr;
+		File*	*fileptr;
+	} u;
+};
+
+enum Defaddr{	/* default addresses */
+	aNo,
+	aDot,
+	aAll,
+};
+
+int	nl_cmd(Text*, Cmd*), a_cmd(Text*, Cmd*), b_cmd(Text*, Cmd*);
+int	c_cmd(Text*, Cmd*), d_cmd(Text*, Cmd*);
+int	B_cmd(Text*, Cmd*), D_cmd(Text*, Cmd*), e_cmd(Text*, Cmd*);
+int	f_cmd(Text*, Cmd*), g_cmd(Text*, Cmd*), i_cmd(Text*, Cmd*);
+int	k_cmd(Text*, Cmd*), m_cmd(Text*, Cmd*), n_cmd(Text*, Cmd*);
+int	p_cmd(Text*, Cmd*);
+int	s_cmd(Text*, Cmd*), u_cmd(Text*, Cmd*), w_cmd(Text*, Cmd*);
+int	x_cmd(Text*, Cmd*), X_cmd(Text*, Cmd*), pipe_cmd(Text*, Cmd*);
+int	eq_cmd(Text*, Cmd*);
+
+String	*allocstring(int);
+void		freestring(String*);
+String	*getregexp(int);
+Addr	*newaddr(void);
+Address	cmdaddress(Addr*, Address, int);
+int	cmdexec(Text*, Cmd*);
+void	editerror(char*, ...);
+int	cmdlookup(int);
+void	resetxec(void);
+void	Straddc(String*, int);