1 /*
2 #pragma	src	"/sys/src/libString"
3 #pragma	lib	"libString.a"
4 */
5 
6 /* extensible Strings */
7 typedef struct String {
8 	Lock	lk;
9 	char	*base;	/* base of String */
10 	char	*end;	/* end of allocated space+1 */
11 	char	*ptr;	/* ptr into String */
12 	short	ref;
13 	uchar	fixed;
14 } String;
15 
16 #define s_clone(s) s_copy((s)->base)
17 #define s_to_c(s) ((s)->base)
18 #define s_len(s) ((s)->ptr-(s)->base)
19 
20 extern String*	s_append(String*, char*);
21 extern String*	s_array(char*, int);
22 extern String*	s_copy(char*);
23 extern void	s_free(String*);
24 extern String*	s_incref(String*);	
25 extern String*	s_memappend(String*, char*, int);
26 extern String*	s_nappend(String*, char*, int);
27 extern String*	s_new(void);
28 extern String*	s_newalloc(int);
29 extern String*	s_parse(String*, String*);
30 extern String*	s_reset(String*);
31 extern String*	s_restart(String*);
32 extern void	s_terminate(String*);
33 extern void	s_tolower(String*);
34 extern void	s_putc(String*, int);
35 extern String*	s_unique(String*);
36 extern String*	s_grow(String*, int);
37 
38 #ifdef BGETC
39 extern int	s_read(Biobuf*, String*, int);
40 extern char	*s_read_line(Biobuf*, String*);
41 extern char	*s_getline(Biobuf*, String*);
42 typedef struct Sinstack Sinstack;
43 extern char	*s_rdinstack(Sinstack*, String*);
44 extern Sinstack	*s_allocinstack(char*);
45 extern void	s_freeinstack(Sinstack*);
46 #endif /* BGETC */