[thirdparty/git.git] / strbuf.c

#include "cache.h"
#include "refs.h"

int prefixcmp(const char *str, const char *prefix)
{
	for (; ; str++, prefix++)
		if (!*prefix)
			return 0;
		else if (*str != *prefix)
			return (unsigned char)*prefix - (unsigned char)*str;
}

int suffixcmp(const char *str, const char *suffix)
{
	int len = strlen(str), suflen = strlen(suffix);
	if (len < suflen)
		return -1;
	else
		return strcmp(str + len - suflen, suffix);
}

/*
 * Used as the default ->buf value, so that people can always assume
 * buf is non NULL and ->buf is NUL terminated even for a freshly
 * initialized strbuf.
 */
char strbuf_slopbuf[1];

void strbuf_init(struct strbuf *sb, size_t hint)
{
	sb->alloc = sb->len = 0;
	sb->buf = strbuf_slopbuf;
	if (hint)
		strbuf_grow(sb, hint);
}

void strbuf_release(struct strbuf *sb)
{
	if (sb->alloc) {
		free(sb->buf);
		strbuf_init(sb, 0);
	}
}

char *strbuf_detach(struct strbuf *sb, size_t *sz)
{
	char *res = sb->alloc ? sb->buf : NULL;
	if (sz)
		*sz = sb->len;
	strbuf_init(sb, 0);
	return res;
}

void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
{
	strbuf_release(sb);
	sb->buf   = buf;
	sb->len   = len;
	sb->alloc = alloc;
	strbuf_grow(sb, 0);
	sb->buf[sb->len] = '\0';
}

void strbuf_grow(struct strbuf *sb, size_t extra)
{
	if (sb->len + extra + 1 <= sb->len)
		die("you want to use way too much memory");
	if (!sb->alloc)
		sb->buf = NULL;
	ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
}

void strbuf_trim(struct strbuf *sb)
{
	char *b = sb->buf;
	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
		sb->len--;
	while (sb->len > 0 && isspace(*b)) {
		b++;
		sb->len--;
	}
	memmove(sb->buf, b, sb->len);
	sb->buf[sb->len] = '\0';
}
void strbuf_rtrim(struct strbuf *sb)
{
	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
		sb->len--;
	sb->buf[sb->len] = '\0';
}

void strbuf_ltrim(struct strbuf *sb)
{
	char *b = sb->buf;
	while (sb->len > 0 && isspace(*b)) {
		b++;
		sb->len--;
	}
	memmove(sb->buf, b, sb->len);
	sb->buf[sb->len] = '\0';
}

struct strbuf **strbuf_split(const struct strbuf *sb, int delim)
{
	int alloc = 2, pos = 0;
	char *n, *p;
	struct strbuf **ret;
	struct strbuf *t;

	ret = xcalloc(alloc, sizeof(struct strbuf *));
	p = n = sb->buf;
	while (n < sb->buf + sb->len) {
		int len;
		n = memchr(n, delim, sb->len - (n - sb->buf));
		if (pos + 1 >= alloc) {
			alloc = alloc * 2;
			ret = xrealloc(ret, sizeof(struct strbuf *) * alloc);
		}
		if (!n)
			n = sb->buf + sb->len - 1;
		len = n - p + 1;
		t = xmalloc(sizeof(struct strbuf));
		strbuf_init(t, len);
		strbuf_add(t, p, len);
		ret[pos] = t;
		ret[++pos] = NULL;
		p = ++n;
	}
	return ret;
}

void strbuf_list_free(struct strbuf **sbs)
{
	struct strbuf **s = sbs;

	while (*s) {
		strbuf_release(*s);
		free(*s++);
	}
	free(sbs);
}

int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
{
	int len = a->len < b->len ? a->len: b->len;
	int cmp = memcmp(a->buf, b->buf, len);
	if (cmp)
		return cmp;
	return a->len < b->len ? -1: a->len != b->len;
}

void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
				   const void *data, size_t dlen)
{
	if (pos + len < pos)
		die("you want to use way too much memory");
	if (pos > sb->len)
		die("`pos' is too far after the end of the buffer");
	if (pos + len > sb->len)
		die("`pos + len' is too far after the end of the buffer");

	if (dlen >= len)
		strbuf_grow(sb, dlen - len);
	memmove(sb->buf + pos + dlen,
			sb->buf + pos + len,
			sb->len - pos - len);
	memcpy(sb->buf + pos, data, dlen);
	strbuf_setlen(sb, sb->len + dlen - len);
}

void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
{
	strbuf_splice(sb, pos, 0, data, len);
}

void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
{
	strbuf_splice(sb, pos, len, NULL, 0);
}

void strbuf_add(struct strbuf *sb, const void *data, size_t len)
{
	strbuf_grow(sb, len);
	memcpy(sb->buf + sb->len, data, len);
	strbuf_setlen(sb, sb->len + len);
}

void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
{
	strbuf_grow(sb, len);
	memcpy(sb->buf + sb->len, sb->buf + pos, len);
	strbuf_setlen(sb, sb->len + len);
}

void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
{
	int len;
	va_list ap;

	if (!strbuf_avail(sb))
		strbuf_grow(sb, 64);
	va_start(ap, fmt);
	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
	va_end(ap);
	if (len < 0)
		die("your vsnprintf is broken");
	if (len > strbuf_avail(sb)) {
		strbuf_grow(sb, len);
		va_start(ap, fmt);
		len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
		va_end(ap);
		if (len > strbuf_avail(sb)) {
			die("this should not happen, your snprintf is broken");
		}
	}
	strbuf_setlen(sb, sb->len + len);
}

void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
		   void *context)
{
	for (;;) {
		const char *percent;
		size_t consumed;

		percent = strchrnul(format, '%');
		strbuf_add(sb, format, percent - format);
		if (!*percent)
			break;
		format = percent + 1;

		if (*format == '%') {
			strbuf_addch(sb, '%');
			format++;
			continue;
		}

		consumed = fn(sb, format, context);
		if (consumed)
			format += consumed;
		else
			strbuf_addch(sb, '%');
	}
}

size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
		void *context)
{
	struct strbuf_expand_dict_entry *e = context;
	size_t len;

	for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
		if (!strncmp(placeholder, e->placeholder, len)) {
			if (e->value)
				strbuf_addstr(sb, e->value);
			return len;
		}
	}
	return 0;
}

void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
{
	int i, len = src->len;

	for (i = 0; i < len; i++) {
		if (src->buf[i] == '%')
			strbuf_addch(dst, '%');
		strbuf_addch(dst, src->buf[i]);
	}
}

size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
{
	size_t res;
	size_t oldalloc = sb->alloc;

	strbuf_grow(sb, size);
	res = fread(sb->buf + sb->len, 1, size, f);
	if (res > 0)
		strbuf_setlen(sb, sb->len + res);
	else if (oldalloc == 0)
		strbuf_release(sb);
	return res;
}

ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
{
	size_t oldlen = sb->len;
	size_t oldalloc = sb->alloc;

	strbuf_grow(sb, hint ? hint : 8192);
	for (;;) {
		ssize_t cnt;

		cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
		if (cnt < 0) {
			if (oldalloc == 0)
				strbuf_release(sb);
			else
				strbuf_setlen(sb, oldlen);
			return -1;
		}
		if (!cnt)
			break;
		sb->len += cnt;
		strbuf_grow(sb, 8192);
	}

	sb->buf[sb->len] = '\0';
	return sb->len - oldlen;
}

#define STRBUF_MAXLINK (2*PATH_MAX)

int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
{
	size_t oldalloc = sb->alloc;

	if (hint < 32)
		hint = 32;

	while (hint < STRBUF_MAXLINK) {
		int len;

		strbuf_grow(sb, hint);
		len = readlink(path, sb->buf, hint);
		if (len < 0) {
			if (errno != ERANGE)
				break;
		} else if (len < hint) {
			strbuf_setlen(sb, len);
			return 0;
		}

		/* .. the buffer was too small - try again */
		hint *= 2;
	}
	if (oldalloc == 0)
		strbuf_release(sb);
	return -1;
}

int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
{
	int ch;

	strbuf_grow(sb, 0);
	if (feof(fp))
		return EOF;

	strbuf_reset(sb);
	while ((ch = fgetc(fp)) != EOF) {
		strbuf_grow(sb, 1);
		sb->buf[sb->len++] = ch;
		if (ch == term)
			break;
	}
	if (ch == EOF && sb->len == 0)
		return EOF;

	sb->buf[sb->len] = '\0';
	return 0;
}

int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
{
	if (strbuf_getwholeline(sb, fp, term))
		return EOF;
	if (sb->buf[sb->len-1] == term)
		strbuf_setlen(sb, sb->len-1);
	return 0;
}

int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
{
	int fd, len;

	fd = open(path, O_RDONLY);
	if (fd < 0)
		return -1;
	len = strbuf_read(sb, fd, hint);
	close(fd);
	if (len < 0)
		return -1;

	return len;
}

int strbuf_branchname(struct strbuf *sb, const char *name)
{
	int len = strlen(name);
	if (interpret_branch_name(name, sb) == len)
		return 0;
	strbuf_add(sb, name, len);
	return len;
}

int strbuf_check_branch_ref(struct strbuf *sb, const char *name)
{
	strbuf_branchname(sb, name);
	strbuf_splice(sb, 0, 0, "refs/heads/", 11);
	return check_ref_format(sb->buf);
}
Commit	Line	Data
812666c8	1	#include "cache.h"
a2fab531	2	#include "refs.h"
d1df5743	3
698a68be JH	4	int prefixcmp(const char str, const char prefix)
	5	{
	6	for (; ; str++, prefix++)
	7	if (!*prefix)
	8	return 0;
	9	else if (str != prefix)
	10	return (unsigned char)prefix - (unsigned char)str;
	11	}
	12
8cc5b290 AP	13	int suffixcmp(const char str, const char suffix)
	14	{
	15	int len = strlen(str), suflen = strlen(suffix);
	16	if (len < suflen)
	17	return -1;
	18	else
	19	return strcmp(str + len - suflen, suffix);
	20	}
	21
b315c5c0 PH	22	/*
	23	* Used as the default ->buf value, so that people can always assume
	24	* buf is non NULL and ->buf is NUL terminated even for a freshly
	25	* initialized strbuf.
	26	*/
	27	char strbuf_slopbuf[1];
	28
917c9a71 PH	29	void strbuf_init(struct strbuf *sb, size_t hint)
917c9a71 PH	30	{
b315c5c0 PH	31	sb->alloc = sb->len = 0;
b315c5c0 PH	32	sb->buf = strbuf_slopbuf;
f1696ee3 PH	33	if (hint)
f1696ee3 PH	34	strbuf_grow(sb, hint);
d1df5743 JH	35	}
d1df5743 JH	36
917c9a71 PH	37	void strbuf_release(struct strbuf *sb)
917c9a71 PH	38	{
b315c5c0 PH	39	if (sb->alloc) {
	40	free(sb->buf);
	41	strbuf_init(sb, 0);
	42	}
b449f4cf PH	43	}
b449f4cf PH	44
b315c5c0	45	char strbuf_detach(struct strbuf sb, size_t *sz)
917c9a71	46	{
b315c5c0 PH	47	char *res = sb->alloc ? sb->buf : NULL;
	48	if (sz)
	49	*sz = sb->len;
f1696ee3	50	strbuf_init(sb, 0);
b449f4cf PH	51	return res;
	52	}
	53
917c9a71 PH	54	void strbuf_attach(struct strbuf sb, void buf, size_t len, size_t alloc)
	55	{
	56	strbuf_release(sb);
	57	sb->buf = buf;
	58	sb->len = len;
	59	sb->alloc = alloc;
	60	strbuf_grow(sb, 0);
	61	sb->buf[sb->len] = '\0';
	62	}
	63
	64	void strbuf_grow(struct strbuf *sb, size_t extra)
	65	{
b449f4cf PH	66	if (sb->len + extra + 1 <= sb->len)
b449f4cf PH	67	die("you want to use way too much memory");
b315c5c0 PH	68	if (!sb->alloc)
b315c5c0 PH	69	sb->buf = NULL;
b449f4cf PH	70	ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
	71	}
	72
eacd6dc5 LS	73	void strbuf_trim(struct strbuf *sb)
	74	{
	75	char *b = sb->buf;
	76	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
	77	sb->len--;
	78	while (sb->len > 0 && isspace(*b)) {
	79	b++;
	80	sb->len--;
	81	}
	82	memmove(sb->buf, b, sb->len);
	83	sb->buf[sb->len] = '\0';
	84	}
f1696ee3 PH	85	void strbuf_rtrim(struct strbuf *sb)
	86	{
	87	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
	88	sb->len--;
	89	sb->buf[sb->len] = '\0';
	90	}
	91
eacd6dc5 LS	92	void strbuf_ltrim(struct strbuf *sb)
	93	{
	94	char *b = sb->buf;
	95	while (sb->len > 0 && isspace(*b)) {
	96	b++;
	97	sb->len--;
	98	}
	99	memmove(sb->buf, b, sb->len);
	100	sb->buf[sb->len] = '\0';
	101	}
	102
eacd6dc5 LS	103	struct strbuf *strbuf_split(const struct strbuf sb, int delim)
	104	{
	105	int alloc = 2, pos = 0;
	106	char n, p;
	107	struct strbuf **ret;
	108	struct strbuf *t;
	109
	110	ret = xcalloc(alloc, sizeof(struct strbuf *));
	111	p = n = sb->buf;
	112	while (n < sb->buf + sb->len) {
	113	int len;
	114	n = memchr(n, delim, sb->len - (n - sb->buf));
	115	if (pos + 1 >= alloc) {
	116	alloc = alloc * 2;
	117	ret = xrealloc(ret, sizeof(struct strbuf ) alloc);
	118	}
	119	if (!n)
	120	n = sb->buf + sb->len - 1;
	121	len = n - p + 1;
	122	t = xmalloc(sizeof(struct strbuf));
	123	strbuf_init(t, len);
	124	strbuf_add(t, p, len);
	125	ret[pos] = t;
	126	ret[++pos] = NULL;
	127	p = ++n;
	128	}
	129	return ret;
	130	}
	131
	132	void strbuf_list_free(struct strbuf **sbs)
	133	{
	134	struct strbuf **s = sbs;
	135
	136	while (*s) {
	137	strbuf_release(*s);
	138	free(*s++);
	139	}
	140	free(sbs);
	141	}
	142
9b200fd6	143	int strbuf_cmp(const struct strbuf a, const struct strbuf b)
45f66f64	144	{
8f024655 AR	145	int len = a->len < b->len ? a->len: b->len;
	146	int cmp = memcmp(a->buf, b->buf, len);
	147	if (cmp)
	148	return cmp;
	149	return a->len < b->len ? -1: a->len != b->len;
45f66f64 PH	150	}
45f66f64 PH	151
917c9a71 PH	152	void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
	153	const void *data, size_t dlen)
	154	{
	155	if (pos + len < pos)
	156	die("you want to use way too much memory");
	157	if (pos > sb->len)
	158	die("`pos' is too far after the end of the buffer");
	159	if (pos + len > sb->len)
	160	die("`pos + len' is too far after the end of the buffer");
	161
	162	if (dlen >= len)
	163	strbuf_grow(sb, dlen - len);
	164	memmove(sb->buf + pos + dlen,
	165	sb->buf + pos + len,
	166	sb->len - pos - len);
	167	memcpy(sb->buf + pos, data, dlen);
	168	strbuf_setlen(sb, sb->len + dlen - len);
	169	}
	170
c76689df PH	171	void strbuf_insert(struct strbuf sb, size_t pos, const void data, size_t len)
	172	{
	173	strbuf_splice(sb, pos, 0, data, len);
	174	}
	175
	176	void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
	177	{
	178	strbuf_splice(sb, pos, len, NULL, 0);
	179	}
	180
917c9a71 PH	181	void strbuf_add(struct strbuf sb, const void data, size_t len)
917c9a71 PH	182	{
b449f4cf PH	183	strbuf_grow(sb, len);
	184	memcpy(sb->buf + sb->len, data, len);
	185	strbuf_setlen(sb, sb->len + len);
	186	}
	187
91db267e RS	188	void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
	189	{
	190	strbuf_grow(sb, len);
	191	memcpy(sb->buf + sb->len, sb->buf + pos, len);
	192	strbuf_setlen(sb, sb->len + len);
	193	}
	194
917c9a71 PH	195	void strbuf_addf(struct strbuf sb, const char fmt, ...)
917c9a71 PH	196	{
b449f4cf PH	197	int len;
	198	va_list ap;
	199
f141bd80 SP	200	if (!strbuf_avail(sb))
f141bd80 SP	201	strbuf_grow(sb, 64);
b449f4cf PH	202	va_start(ap, fmt);
	203	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
	204	va_end(ap);
f141bd80 SP	205	if (len < 0)
f141bd80 SP	206	die("your vsnprintf is broken");
f1696ee3	207	if (len > strbuf_avail(sb)) {
b449f4cf PH	208	strbuf_grow(sb, len);
	209	va_start(ap, fmt);
	210	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
	211	va_end(ap);
f1696ee3	212	if (len > strbuf_avail(sb)) {
b449f4cf PH	213	die("this should not happen, your snprintf is broken");
	214	}
	215	}
	216	strbuf_setlen(sb, sb->len + len);
d1df5743 JH	217	}
d1df5743 JH	218
c3a670de MC	219	void strbuf_expand(struct strbuf sb, const char format, expand_fn_t fn,
c3a670de MC	220	void *context)
cde75e59 RS	221	{
cde75e59 RS	222	for (;;) {
c3a670de MC	223	const char *percent;
c3a670de MC	224	size_t consumed;
cde75e59 RS	225
	226	percent = strchrnul(format, '%');
	227	strbuf_add(sb, format, percent - format);
	228	if (!*percent)
	229	break;
	230	format = percent + 1;
	231
0a0416a3 JK	232	if (*format == '%') {
	233	strbuf_addch(sb, '%');
	234	format++;
	235	continue;
	236	}
	237
c3a670de MC	238	consumed = fn(sb, format, context);
	239	if (consumed)
	240	format += consumed;
	241	else
cde75e59 RS	242	strbuf_addch(sb, '%');
	243	}
	244	}
	245
9b864e73 RS	246	size_t strbuf_expand_dict_cb(struct strbuf sb, const char placeholder,
	247	void *context)
	248	{
	249	struct strbuf_expand_dict_entry *e = context;
	250	size_t len;
	251
	252	for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
	253	if (!strncmp(placeholder, e->placeholder, len)) {
	254	if (e->value)
	255	strbuf_addstr(sb, e->value);
	256	return len;
	257	}
	258	}
	259	return 0;
	260	}
	261
361df5df JK	262	void strbuf_addbuf_percentquote(struct strbuf dst, const struct strbuf src)
	263	{
	264	int i, len = src->len;
	265
	266	for (i = 0; i < len; i++) {
	267	if (src->buf[i] == '%')
	268	strbuf_addch(dst, '%');
	269	strbuf_addch(dst, src->buf[i]);
	270	}
	271	}
	272
917c9a71 PH	273	size_t strbuf_fread(struct strbuf sb, size_t size, FILE f)
917c9a71 PH	274	{
b449f4cf	275	size_t res;
2fc64700	276	size_t oldalloc = sb->alloc;
b449f4cf PH	277
	278	strbuf_grow(sb, size);
	279	res = fread(sb->buf + sb->len, 1, size, f);
2fc64700	280	if (res > 0)
b449f4cf	281	strbuf_setlen(sb, sb->len + res);
6651c3f7	282	else if (oldalloc == 0)
2fc64700	283	strbuf_release(sb);
b449f4cf	284	return res;
d1df5743 JH	285	}
d1df5743 JH	286
f1696ee3	287	ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
b449f4cf PH	288	{
b449f4cf PH	289	size_t oldlen = sb->len;
2fc64700	290	size_t oldalloc = sb->alloc;
b449f4cf	291
f1696ee3	292	strbuf_grow(sb, hint ? hint : 8192);
b449f4cf PH	293	for (;;) {
	294	ssize_t cnt;
	295
b449f4cf PH	296	cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
b449f4cf PH	297	if (cnt < 0) {
2fc64700 RS	298	if (oldalloc == 0)
	299	strbuf_release(sb);
	300	else
	301	strbuf_setlen(sb, oldlen);
b449f4cf PH	302	return -1;
	303	}
	304	if (!cnt)
	305	break;
	306	sb->len += cnt;
f1696ee3	307	strbuf_grow(sb, 8192);
b449f4cf PH	308	}
	309
	310	sb->buf[sb->len] = '\0';
	311	return sb->len - oldlen;
d1df5743 JH	312	}
d1df5743 JH	313
b11b7e13 LT	314	#define STRBUF_MAXLINK (2*PATH_MAX)
	315
	316	int strbuf_readlink(struct strbuf sb, const char path, size_t hint)
	317	{
2fc64700 RS	318	size_t oldalloc = sb->alloc;
2fc64700 RS	319
b11b7e13 LT	320	if (hint < 32)
	321	hint = 32;
	322
	323	while (hint < STRBUF_MAXLINK) {
	324	int len;
	325
	326	strbuf_grow(sb, hint);
	327	len = readlink(path, sb->buf, hint);
	328	if (len < 0) {
	329	if (errno != ERANGE)
	330	break;
	331	} else if (len < hint) {
	332	strbuf_setlen(sb, len);
	333	return 0;
	334	}
	335
	336	/* .. the buffer was too small - try again */
	337	hint *= 2;
	338	}
2fc64700 RS	339	if (oldalloc == 0)
2fc64700 RS	340	strbuf_release(sb);
b11b7e13 LT	341	return -1;
	342	}
	343
c7e4f0d7	344	int strbuf_getwholeline(struct strbuf sb, FILE fp, int term)
917c9a71	345	{
d1df5743	346	int ch;
e6c019d0 PH	347
	348	strbuf_grow(sb, 0);
	349	if (feof(fp))
	350	return EOF;
b449f4cf PH	351
b449f4cf PH	352	strbuf_reset(sb);
d1df5743	353	while ((ch = fgetc(fp)) != EOF) {
b449f4cf PH	354	strbuf_grow(sb, 1);
b449f4cf PH	355	sb->buf[sb->len++] = ch;
c7e4f0d7 BC	356	if (ch == term)
c7e4f0d7 BC	357	break;
d1df5743	358	}
e6c019d0 PH	359	if (ch == EOF && sb->len == 0)
e6c019d0 PH	360	return EOF;
b449f4cf	361
b449f4cf	362	sb->buf[sb->len] = '\0';
e6c019d0	363	return 0;
d1df5743	364	}
a9390b9f	365
c7e4f0d7 BC	366	int strbuf_getline(struct strbuf sb, FILE fp, int term)
	367	{
	368	if (strbuf_getwholeline(sb, fp, term))
	369	return EOF;
	370	if (sb->buf[sb->len-1] == term)
	371	strbuf_setlen(sb, sb->len-1);
	372	return 0;
	373	}
	374
387e7e19	375	int strbuf_read_file(struct strbuf sb, const char path, size_t hint)
a9390b9f KH	376	{
	377	int fd, len;
	378
	379	fd = open(path, O_RDONLY);
	380	if (fd < 0)
	381	return -1;
387e7e19	382	len = strbuf_read(sb, fd, hint);
a9390b9f KH	383	close(fd);
	384	if (len < 0)
	385	return -1;
	386
	387	return len;
	388	}
a552de75 JH	389
	390	int strbuf_branchname(struct strbuf sb, const char name)
	391	{
	392	int len = strlen(name);
	393	if (interpret_branch_name(name, sb) == len)
	394	return 0;
	395	strbuf_add(sb, name, len);
	396	return len;
	397	}
a2fab531 JH	398
	399	int strbuf_check_branch_ref(struct strbuf sb, const char name)
	400	{
	401	strbuf_branchname(sb, name);
	402	strbuf_splice(sb, 0, 0, "refs/heads/", 11);
	403	return check_ref_format(sb->buf);
	404	}