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

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 (unsigned_add_overflows(extra, 1) ||
	    unsigned_add_overflows(sb->len, extra + 1))
		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_buf(const char *str, size_t slen, int delim, int max)
{
	int alloc = 2, pos = 0;
	const char *n, *p;
	struct strbuf **ret;
	struct strbuf *t;

	ret = xcalloc(alloc, sizeof(struct strbuf *));
	p = n = str;
	while (n < str + slen) {
		int len;
		if (max <= 0 || pos + 1 < max)
			n = memchr(n, delim, slen - (n - str));
		else
			n = NULL;
		if (pos + 1 >= alloc) {
			alloc = alloc * 2;
			ret = xrealloc(ret, sizeof(struct strbuf *) * alloc);
		}
		if (!n)
			n = str + slen - 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 (unsigned_add_overflows(pos, len))
		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, ...)
{
	va_list ap;
	va_start(ap, fmt);
	strbuf_vaddf(sb, fmt, ap);
	va_end(ap);
}

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

	if (!strbuf_avail(sb))
		strbuf_grow(sb, 64);
	va_copy(cp, ap);
	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp);
	va_end(cp);
	if (len < 0)
		die("BUG: your vsnprintf is broken (returned %d)", len);
	if (len > strbuf_avail(sb)) {
		strbuf_grow(sb, len);
		len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
		if (len > strbuf_avail(sb))
			die("BUG: your vsnprintf is broken (insatiable)");
	}
	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;
}
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;
5e7a5d97	33	if (hint) {
f1696ee3	34	strbuf_grow(sb, hint);
5e7a5d97 EFL	35	sb->buf[0] = '\0';
5e7a5d97 EFL	36	}
d1df5743 JH	37	}
d1df5743 JH	38
917c9a71 PH	39	void strbuf_release(struct strbuf *sb)
917c9a71 PH	40	{
b315c5c0 PH	41	if (sb->alloc) {
	42	free(sb->buf);
	43	strbuf_init(sb, 0);
	44	}
b449f4cf PH	45	}
b449f4cf PH	46
b315c5c0	47	char strbuf_detach(struct strbuf sb, size_t *sz)
917c9a71	48	{
b315c5c0 PH	49	char *res = sb->alloc ? sb->buf : NULL;
	50	if (sz)
	51	*sz = sb->len;
f1696ee3	52	strbuf_init(sb, 0);
b449f4cf PH	53	return res;
	54	}
	55
917c9a71 PH	56	void strbuf_attach(struct strbuf sb, void buf, size_t len, size_t alloc)
	57	{
	58	strbuf_release(sb);
	59	sb->buf = buf;
	60	sb->len = len;
	61	sb->alloc = alloc;
	62	strbuf_grow(sb, 0);
	63	sb->buf[sb->len] = '\0';
	64	}
	65
	66	void strbuf_grow(struct strbuf *sb, size_t extra)
	67	{
1368f650 JN	68	if (unsigned_add_overflows(extra, 1) \|\|
1368f650 JN	69	unsigned_add_overflows(sb->len, extra + 1))
b449f4cf	70	die("you want to use way too much memory");
b315c5c0 PH	71	if (!sb->alloc)
b315c5c0 PH	72	sb->buf = NULL;
b449f4cf PH	73	ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
	74	}
	75
eacd6dc5 LS	76	void strbuf_trim(struct strbuf *sb)
	77	{
	78	char *b = sb->buf;
	79	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
	80	sb->len--;
	81	while (sb->len > 0 && isspace(*b)) {
	82	b++;
	83	sb->len--;
	84	}
	85	memmove(sb->buf, b, sb->len);
	86	sb->buf[sb->len] = '\0';
	87	}
f1696ee3 PH	88	void strbuf_rtrim(struct strbuf *sb)
	89	{
	90	while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
	91	sb->len--;
	92	sb->buf[sb->len] = '\0';
	93	}
	94
eacd6dc5 LS	95	void strbuf_ltrim(struct strbuf *sb)
	96	{
	97	char *b = sb->buf;
	98	while (sb->len > 0 && isspace(*b)) {
	99	b++;
	100	sb->len--;
	101	}
	102	memmove(sb->buf, b, sb->len);
	103	sb->buf[sb->len] = '\0';
	104	}
	105
2f1d9e2b	106	struct strbuf *strbuf_split_buf(const char str, size_t slen, int delim, int max)
eacd6dc5 LS	107	{
eacd6dc5 LS	108	int alloc = 2, pos = 0;
2f1d9e2b	109	const char n, p;
eacd6dc5 LS	110	struct strbuf **ret;
	111	struct strbuf *t;
	112
	113	ret = xcalloc(alloc, sizeof(struct strbuf *));
2f1d9e2b JK	114	p = n = str;
2f1d9e2b JK	115	while (n < str + slen) {
eacd6dc5	116	int len;
28fc3a68	117	if (max <= 0 \|\| pos + 1 < max)
2f1d9e2b	118	n = memchr(n, delim, slen - (n - str));
28fc3a68 JK	119	else
28fc3a68 JK	120	n = NULL;
eacd6dc5 LS	121	if (pos + 1 >= alloc) {
	122	alloc = alloc * 2;
	123	ret = xrealloc(ret, sizeof(struct strbuf ) alloc);
	124	}
	125	if (!n)
2f1d9e2b	126	n = str + slen - 1;
eacd6dc5 LS	127	len = n - p + 1;
	128	t = xmalloc(sizeof(struct strbuf));
	129	strbuf_init(t, len);
	130	strbuf_add(t, p, len);
	131	ret[pos] = t;
	132	ret[++pos] = NULL;
	133	p = ++n;
	134	}
	135	return ret;
	136	}
	137
	138	void strbuf_list_free(struct strbuf **sbs)
	139	{
	140	struct strbuf **s = sbs;
	141
	142	while (*s) {
	143	strbuf_release(*s);
	144	free(*s++);
	145	}
	146	free(sbs);
	147	}
	148
9b200fd6	149	int strbuf_cmp(const struct strbuf a, const struct strbuf b)
45f66f64	150	{
8f024655 AR	151	int len = a->len < b->len ? a->len: b->len;
	152	int cmp = memcmp(a->buf, b->buf, len);
	153	if (cmp)
	154	return cmp;
	155	return a->len < b->len ? -1: a->len != b->len;
45f66f64 PH	156	}
45f66f64 PH	157
917c9a71 PH	158	void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
	159	const void *data, size_t dlen)
	160	{
1368f650	161	if (unsigned_add_overflows(pos, len))
917c9a71 PH	162	die("you want to use way too much memory");
	163	if (pos > sb->len)
	164	die("`pos' is too far after the end of the buffer");
	165	if (pos + len > sb->len)
	166	die("`pos + len' is too far after the end of the buffer");
	167
	168	if (dlen >= len)
	169	strbuf_grow(sb, dlen - len);
	170	memmove(sb->buf + pos + dlen,
	171	sb->buf + pos + len,
	172	sb->len - pos - len);
	173	memcpy(sb->buf + pos, data, dlen);
	174	strbuf_setlen(sb, sb->len + dlen - len);
	175	}
	176
c76689df PH	177	void strbuf_insert(struct strbuf sb, size_t pos, const void data, size_t len)
	178	{
	179	strbuf_splice(sb, pos, 0, data, len);
	180	}
	181
	182	void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
	183	{
	184	strbuf_splice(sb, pos, len, NULL, 0);
	185	}
	186
917c9a71 PH	187	void strbuf_add(struct strbuf sb, const void data, size_t len)
917c9a71 PH	188	{
b449f4cf PH	189	strbuf_grow(sb, len);
	190	memcpy(sb->buf + sb->len, data, len);
	191	strbuf_setlen(sb, sb->len + len);
	192	}
	193
91db267e RS	194	void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
	195	{
	196	strbuf_grow(sb, len);
	197	memcpy(sb->buf + sb->len, sb->buf + pos, len);
	198	strbuf_setlen(sb, sb->len + len);
	199	}
	200
917c9a71 PH	201	void strbuf_addf(struct strbuf sb, const char fmt, ...)
917c9a71 PH	202	{
b449f4cf	203	va_list ap;
ebeb6090 JK	204	va_start(ap, fmt);
	205	strbuf_vaddf(sb, fmt, ap);
	206	va_end(ap);
	207	}
	208
	209	void strbuf_vaddf(struct strbuf sb, const char fmt, va_list ap)
	210	{
	211	int len;
	212	va_list cp;
b449f4cf	213
f141bd80 SP	214	if (!strbuf_avail(sb))
f141bd80 SP	215	strbuf_grow(sb, 64);
ebeb6090 JK	216	va_copy(cp, ap);
	217	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp);
	218	va_end(cp);
f141bd80	219	if (len < 0)
ebeb6090	220	die("BUG: your vsnprintf is broken (returned %d)", len);
f1696ee3	221	if (len > strbuf_avail(sb)) {
b449f4cf	222	strbuf_grow(sb, len);
b449f4cf	223	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
ebeb6090 JK	224	if (len > strbuf_avail(sb))
ebeb6090 JK	225	die("BUG: your vsnprintf is broken (insatiable)");
b449f4cf PH	226	}
b449f4cf PH	227	strbuf_setlen(sb, sb->len + len);
d1df5743 JH	228	}
d1df5743 JH	229
c3a670de MC	230	void strbuf_expand(struct strbuf sb, const char format, expand_fn_t fn,
c3a670de MC	231	void *context)
cde75e59 RS	232	{
cde75e59 RS	233	for (;;) {
c3a670de MC	234	const char *percent;
c3a670de MC	235	size_t consumed;
cde75e59 RS	236
	237	percent = strchrnul(format, '%');
	238	strbuf_add(sb, format, percent - format);
	239	if (!*percent)
	240	break;
	241	format = percent + 1;
	242
0a0416a3 JK	243	if (*format == '%') {
	244	strbuf_addch(sb, '%');
	245	format++;
	246	continue;
	247	}
	248
c3a670de MC	249	consumed = fn(sb, format, context);
	250	if (consumed)
	251	format += consumed;
	252	else
cde75e59 RS	253	strbuf_addch(sb, '%');
	254	}
	255	}
	256
9b864e73 RS	257	size_t strbuf_expand_dict_cb(struct strbuf sb, const char placeholder,
	258	void *context)
	259	{
	260	struct strbuf_expand_dict_entry *e = context;
	261	size_t len;
	262
	263	for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
	264	if (!strncmp(placeholder, e->placeholder, len)) {
	265	if (e->value)
	266	strbuf_addstr(sb, e->value);
	267	return len;
	268	}
	269	}
	270	return 0;
	271	}
	272
361df5df JK	273	void strbuf_addbuf_percentquote(struct strbuf dst, const struct strbuf src)
	274	{
	275	int i, len = src->len;
	276
	277	for (i = 0; i < len; i++) {
	278	if (src->buf[i] == '%')
	279	strbuf_addch(dst, '%');
	280	strbuf_addch(dst, src->buf[i]);
	281	}
	282	}
	283
917c9a71 PH	284	size_t strbuf_fread(struct strbuf sb, size_t size, FILE f)
917c9a71 PH	285	{
b449f4cf	286	size_t res;
2fc64700	287	size_t oldalloc = sb->alloc;
b449f4cf PH	288
	289	strbuf_grow(sb, size);
	290	res = fread(sb->buf + sb->len, 1, size, f);
2fc64700	291	if (res > 0)
b449f4cf	292	strbuf_setlen(sb, sb->len + res);
6651c3f7	293	else if (oldalloc == 0)
2fc64700	294	strbuf_release(sb);
b449f4cf	295	return res;
d1df5743 JH	296	}
d1df5743 JH	297
f1696ee3	298	ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
b449f4cf PH	299	{
b449f4cf PH	300	size_t oldlen = sb->len;
2fc64700	301	size_t oldalloc = sb->alloc;
b449f4cf	302
f1696ee3	303	strbuf_grow(sb, hint ? hint : 8192);
b449f4cf PH	304	for (;;) {
	305	ssize_t cnt;
	306
b449f4cf PH	307	cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
b449f4cf PH	308	if (cnt < 0) {
2fc64700 RS	309	if (oldalloc == 0)
	310	strbuf_release(sb);
	311	else
	312	strbuf_setlen(sb, oldlen);
b449f4cf PH	313	return -1;
	314	}
	315	if (!cnt)
	316	break;
	317	sb->len += cnt;
f1696ee3	318	strbuf_grow(sb, 8192);
b449f4cf PH	319	}
	320
	321	sb->buf[sb->len] = '\0';
	322	return sb->len - oldlen;
d1df5743 JH	323	}
d1df5743 JH	324
b11b7e13 LT	325	#define STRBUF_MAXLINK (2*PATH_MAX)
	326
	327	int strbuf_readlink(struct strbuf sb, const char path, size_t hint)
	328	{
2fc64700 RS	329	size_t oldalloc = sb->alloc;
2fc64700 RS	330
b11b7e13 LT	331	if (hint < 32)
	332	hint = 32;
	333
	334	while (hint < STRBUF_MAXLINK) {
	335	int len;
	336
	337	strbuf_grow(sb, hint);
	338	len = readlink(path, sb->buf, hint);
	339	if (len < 0) {
	340	if (errno != ERANGE)
	341	break;
	342	} else if (len < hint) {
	343	strbuf_setlen(sb, len);
	344	return 0;
	345	}
	346
	347	/* .. the buffer was too small - try again */
	348	hint *= 2;
	349	}
2fc64700 RS	350	if (oldalloc == 0)
2fc64700 RS	351	strbuf_release(sb);
b11b7e13 LT	352	return -1;
	353	}
	354
c7e4f0d7	355	int strbuf_getwholeline(struct strbuf sb, FILE fp, int term)
917c9a71	356	{
d1df5743	357	int ch;
e6c019d0 PH	358
	359	strbuf_grow(sb, 0);
	360	if (feof(fp))
	361	return EOF;
b449f4cf PH	362
b449f4cf PH	363	strbuf_reset(sb);
d1df5743	364	while ((ch = fgetc(fp)) != EOF) {
b449f4cf PH	365	strbuf_grow(sb, 1);
b449f4cf PH	366	sb->buf[sb->len++] = ch;
c7e4f0d7 BC	367	if (ch == term)
c7e4f0d7 BC	368	break;
d1df5743	369	}
e6c019d0 PH	370	if (ch == EOF && sb->len == 0)
e6c019d0 PH	371	return EOF;
b449f4cf	372
b449f4cf	373	sb->buf[sb->len] = '\0';
e6c019d0	374	return 0;
d1df5743	375	}
a9390b9f	376
c7e4f0d7 BC	377	int strbuf_getline(struct strbuf sb, FILE fp, int term)
	378	{
	379	if (strbuf_getwholeline(sb, fp, term))
	380	return EOF;
	381	if (sb->buf[sb->len-1] == term)
	382	strbuf_setlen(sb, sb->len-1);
	383	return 0;
	384	}
	385
387e7e19	386	int strbuf_read_file(struct strbuf sb, const char path, size_t hint)
a9390b9f KH	387	{
	388	int fd, len;
	389
	390	fd = open(path, O_RDONLY);
	391	if (fd < 0)
	392	return -1;
387e7e19	393	len = strbuf_read(sb, fd, hint);
a9390b9f KH	394	close(fd);
	395	if (len < 0)
	396	return -1;
	397
	398	return len;
	399	}