strbuf_split_buf(): simplify iteration
[git/git.git] / strbuf.h
1 #ifndef STRBUF_H
2 #define STRBUF_H
3
4 /* See Documentation/technical/api-strbuf.txt */
5
6 extern char strbuf_slopbuf[];
7 struct strbuf {
8 size_t alloc;
9 size_t len;
10 char *buf;
11 };
12
13 #define STRBUF_INIT { 0, 0, strbuf_slopbuf }
14
15 /*----- strbuf life cycle -----*/
16 extern void strbuf_init(struct strbuf *, size_t);
17 extern void strbuf_release(struct strbuf *);
18 extern char *strbuf_detach(struct strbuf *, size_t *);
19 extern void strbuf_attach(struct strbuf *, void *, size_t, size_t);
20 static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) {
21 struct strbuf tmp = *a;
22 *a = *b;
23 *b = tmp;
24 }
25
26 /*----- strbuf size related -----*/
27 static inline size_t strbuf_avail(const struct strbuf *sb) {
28 return sb->alloc ? sb->alloc - sb->len - 1 : 0;
29 }
30
31 extern void strbuf_grow(struct strbuf *, size_t);
32
33 static inline void strbuf_setlen(struct strbuf *sb, size_t len) {
34 if (len > (sb->alloc ? sb->alloc - 1 : 0))
35 die("BUG: strbuf_setlen() beyond buffer");
36 sb->len = len;
37 sb->buf[len] = '\0';
38 }
39 #define strbuf_reset(sb) strbuf_setlen(sb, 0)
40
41 /*----- content related -----*/
42 extern void strbuf_trim(struct strbuf *);
43 extern void strbuf_rtrim(struct strbuf *);
44 extern void strbuf_ltrim(struct strbuf *);
45 extern int strbuf_cmp(const struct strbuf *, const struct strbuf *);
46
47 extern struct strbuf **strbuf_split_buf(const char *, size_t,
48 int delim, int max);
49 static inline struct strbuf **strbuf_split_str(const char *str,
50 int delim, int max)
51 {
52 return strbuf_split_buf(str, strlen(str), delim, max);
53 }
54 static inline struct strbuf **strbuf_split_max(const struct strbuf *sb,
55 int delim, int max)
56 {
57 return strbuf_split_buf(sb->buf, sb->len, delim, max);
58 }
59 static inline struct strbuf **strbuf_split(const struct strbuf *sb, int delim)
60 {
61 return strbuf_split_max(sb, delim, 0);
62 }
63 extern void strbuf_list_free(struct strbuf **);
64
65 /*----- add data in your buffer -----*/
66 static inline void strbuf_addch(struct strbuf *sb, int c) {
67 strbuf_grow(sb, 1);
68 sb->buf[sb->len++] = c;
69 sb->buf[sb->len] = '\0';
70 }
71
72 extern void strbuf_insert(struct strbuf *, size_t pos, const void *, size_t);
73 extern void strbuf_remove(struct strbuf *, size_t pos, size_t len);
74
75 /* splice pos..pos+len with given data */
76 extern void strbuf_splice(struct strbuf *, size_t pos, size_t len,
77 const void *, size_t);
78
79 extern void strbuf_add(struct strbuf *, const void *, size_t);
80 static inline void strbuf_addstr(struct strbuf *sb, const char *s) {
81 strbuf_add(sb, s, strlen(s));
82 }
83 static inline void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) {
84 strbuf_grow(sb, sb2->len);
85 strbuf_add(sb, sb2->buf, sb2->len);
86 }
87 extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len);
88
89 typedef size_t (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context);
90 extern void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, void *context);
91 struct strbuf_expand_dict_entry {
92 const char *placeholder;
93 const char *value;
94 };
95 extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context);
96 extern void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src);
97
98 __attribute__((format (printf,2,3)))
99 extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);
100 __attribute__((format (printf,2,0)))
101 extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap);
102
103 extern void strbuf_add_lines(struct strbuf *sb, const char *prefix, const char *buf, size_t size);
104
105 static inline void strbuf_complete_line(struct strbuf *sb)
106 {
107 if (sb->len && sb->buf[sb->len - 1] != '\n')
108 strbuf_addch(sb, '\n');
109 }
110
111 extern size_t strbuf_fread(struct strbuf *, size_t, FILE *);
112 /* XXX: if read fails, any partial read is undone */
113 extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint);
114 extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
115 extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint);
116
117 extern int strbuf_getwholeline(struct strbuf *, FILE *, int);
118 extern int strbuf_getline(struct strbuf *, FILE *, int);
119 extern int strbuf_getwholeline_fd(struct strbuf *, int, int);
120
121 extern void stripspace(struct strbuf *buf, int skip_comments);
122 extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env);
123
124 extern int strbuf_branchname(struct strbuf *sb, const char *name);
125 extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name);
126
127 extern void strbuf_addstr_urlencode(struct strbuf *, const char *,
128 int reserved);
129
130 __attribute__((format (printf,1,2)))
131 extern int printf_ln(const char *fmt, ...);
132 __attribute__((format (printf,2,3)))
133 extern int fprintf_ln(FILE *fp, const char *fmt, ...);
134
135 #endif /* STRBUF_H */