mirror of
https://github.com/git/git.git
synced 2024-11-09 02:33:11 +01:00
7141efab24
Commita8f3e2219introduced the strbuf_grow() call to strbuf_setlen() to make ensure that there was at least one byte available to write the mandatory trailing NUL, even for previously unallocated strbufs. Thenb315c5c0added strbuf_slopbuf for the same reason, only globally for all uses of strbufs. Thus the strbuf_grow() call can be removed now. This avoids readers of strbuf.h from mistakenly thinking that strbuf_setlen() can be used to extend a strbuf. The following assert() needs to be changed to cope with the fact that sb->alloc can now be zero, which is OK as long as len is also zero. As suggested by Junio, use the chance to convert it to a die() with a short explanatory message. The pattern of 'die("BUG: ...")' is already used in strbuf.c. This was the only assert() in strbuf.[ch], so assert.h doesn't have to be included anymore either. Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
#ifndef STRBUF_H
|
|
#define STRBUF_H
|
|
|
|
/* See Documentation/technical/api-strbuf.txt */
|
|
|
|
extern char strbuf_slopbuf[];
|
|
struct strbuf {
|
|
size_t alloc;
|
|
size_t len;
|
|
char *buf;
|
|
};
|
|
|
|
#define STRBUF_INIT { 0, 0, strbuf_slopbuf }
|
|
|
|
/*----- strbuf life cycle -----*/
|
|
extern void strbuf_init(struct strbuf *, size_t);
|
|
extern void strbuf_release(struct strbuf *);
|
|
extern char *strbuf_detach(struct strbuf *, size_t *);
|
|
extern void strbuf_attach(struct strbuf *, void *, size_t, size_t);
|
|
static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) {
|
|
struct strbuf tmp = *a;
|
|
*a = *b;
|
|
*b = tmp;
|
|
}
|
|
|
|
/*----- strbuf size related -----*/
|
|
static inline size_t strbuf_avail(const struct strbuf *sb) {
|
|
return sb->alloc ? sb->alloc - sb->len - 1 : 0;
|
|
}
|
|
|
|
extern void strbuf_grow(struct strbuf *, size_t);
|
|
|
|
static inline void strbuf_setlen(struct strbuf *sb, size_t len) {
|
|
if (len > (sb->alloc ? sb->alloc - 1 : 0))
|
|
die("BUG: strbuf_setlen() beyond buffer");
|
|
sb->len = len;
|
|
sb->buf[len] = '\0';
|
|
}
|
|
#define strbuf_reset(sb) strbuf_setlen(sb, 0)
|
|
|
|
/*----- content related -----*/
|
|
extern void strbuf_trim(struct strbuf *);
|
|
extern void strbuf_rtrim(struct strbuf *);
|
|
extern void strbuf_ltrim(struct strbuf *);
|
|
extern int strbuf_cmp(const struct strbuf *, const struct strbuf *);
|
|
|
|
extern struct strbuf **strbuf_split(const struct strbuf *, int delim);
|
|
extern void strbuf_list_free(struct strbuf **);
|
|
|
|
/*----- add data in your buffer -----*/
|
|
static inline void strbuf_addch(struct strbuf *sb, int c) {
|
|
strbuf_grow(sb, 1);
|
|
sb->buf[sb->len++] = c;
|
|
sb->buf[sb->len] = '\0';
|
|
}
|
|
|
|
extern void strbuf_insert(struct strbuf *, size_t pos, const void *, size_t);
|
|
extern void strbuf_remove(struct strbuf *, size_t pos, size_t len);
|
|
|
|
/* splice pos..pos+len with given data */
|
|
extern void strbuf_splice(struct strbuf *, size_t pos, size_t len,
|
|
const void *, size_t);
|
|
|
|
extern void strbuf_add(struct strbuf *, const void *, size_t);
|
|
static inline void strbuf_addstr(struct strbuf *sb, const char *s) {
|
|
strbuf_add(sb, s, strlen(s));
|
|
}
|
|
static inline void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) {
|
|
strbuf_grow(sb, sb2->len);
|
|
strbuf_add(sb, sb2->buf, sb2->len);
|
|
}
|
|
extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len);
|
|
|
|
typedef size_t (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context);
|
|
extern void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, void *context);
|
|
struct strbuf_expand_dict_entry {
|
|
const char *placeholder;
|
|
const char *value;
|
|
};
|
|
extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context);
|
|
extern void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src);
|
|
|
|
__attribute__((format (printf,2,3)))
|
|
extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);
|
|
__attribute__((format (printf,2,0)))
|
|
extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap);
|
|
|
|
extern size_t strbuf_fread(struct strbuf *, size_t, FILE *);
|
|
/* XXX: if read fails, any partial read is undone */
|
|
extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint);
|
|
extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint);
|
|
extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint);
|
|
|
|
extern int strbuf_getwholeline(struct strbuf *, FILE *, int);
|
|
extern int strbuf_getline(struct strbuf *, FILE *, int);
|
|
|
|
extern void stripspace(struct strbuf *buf, int skip_comments);
|
|
extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env);
|
|
|
|
extern int strbuf_branchname(struct strbuf *sb, const char *name);
|
|
extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name);
|
|
|
|
#endif /* STRBUF_H */
|