#include "cache.h"
#include "refs.h"
+#include "string-list.h"
+#include "utf8.h"
-int prefixcmp(const char *str, const char *prefix)
+int starts_with(const char *str, const char *prefix)
{
for (; ; str++, prefix++)
if (!*prefix)
- return 0;
+ return 1;
else if (*str != *prefix)
- return (unsigned char)*prefix - (unsigned char)*str;
+ return 0;
}
-int suffixcmp(const char *str, const char *suffix)
+int istarts_with(const char *str, const char *prefix)
{
- int len = strlen(str), suflen = strlen(suffix);
- if (len < suflen)
- return -1;
- else
- return strcmp(str + len - suflen, suffix);
+ for (; ; str++, prefix++)
+ if (!*prefix)
+ return 1;
+ else if (tolower(*str) != tolower(*prefix))
+ return 0;
+}
+
+int skip_to_optional_arg_default(const char *str, const char *prefix,
+ const char **arg, const char *def)
+{
+ const char *p;
+
+ if (!skip_prefix(str, prefix, &p))
+ return 0;
+
+ if (!*p) {
+ if (arg)
+ *arg = def;
+ return 1;
+ }
+
+ if (*p != '=')
+ return 0;
+
+ if (arg)
+ *arg = p + 1;
+ return 1;
}
/*
char *strbuf_detach(struct strbuf *sb, size_t *sz)
{
- char *res = sb->alloc ? sb->buf : NULL;
+ char *res;
+ strbuf_grow(sb, 0);
+ res = sb->buf;
if (sz)
*sz = sb->len;
strbuf_init(sb, 0);
void strbuf_trim(struct strbuf *sb)
{
- char *b = sb->buf;
+ strbuf_rtrim(sb);
+ strbuf_ltrim(sb);
+}
+
+void strbuf_rtrim(struct strbuf *sb)
+{
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)
+
+void strbuf_trim_trailing_dir_sep(struct strbuf *sb)
{
- while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
+ while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1]))
sb->len--;
sb->buf[sb->len] = '\0';
}
+void strbuf_trim_trailing_newline(struct strbuf *sb)
+{
+ if (sb->len > 0 && sb->buf[sb->len - 1] == '\n') {
+ if (--sb->len > 0 && sb->buf[sb->len - 1] == '\r')
+ --sb->len;
+ sb->buf[sb->len] = '\0';
+ }
+}
+
void strbuf_ltrim(struct strbuf *sb)
{
char *b = sb->buf;
sb->buf[sb->len] = '\0';
}
-struct strbuf **strbuf_split_buf(const char *str, size_t slen, int delim, int max)
+int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
+{
+ char *out;
+ size_t len;
+
+ if (same_encoding(from, to))
+ return 0;
+
+ out = reencode_string_len(sb->buf, sb->len, to, from, &len);
+ if (!out)
+ return -1;
+
+ strbuf_attach(sb, out, len, len);
+ return 0;
+}
+
+void strbuf_tolower(struct strbuf *sb)
+{
+ char *p = sb->buf, *end = sb->buf + sb->len;
+ for (; p < end; p++)
+ *p = tolower(*p);
+}
+
+struct strbuf **strbuf_split_buf(const char *str, size_t slen,
+ int terminator, int max)
{
- int alloc = 2, pos = 0;
- const char *n, *p;
- struct strbuf **ret;
+ struct strbuf **ret = NULL;
+ size_t nr = 0, alloc = 0;
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);
+ while (slen) {
+ int len = slen;
+ if (max <= 0 || nr + 1 < max) {
+ const char *end = memchr(str, terminator, slen);
+ if (end)
+ len = end - str + 1;
}
- 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;
+ strbuf_add(t, str, len);
+ ALLOC_GROW(ret, nr + 2, alloc);
+ ret[nr++] = t;
+ str += len;
+ slen -= len;
}
+ ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */
+ ret[nr] = NULL;
return ret;
}
+void strbuf_add_separated_string_list(struct strbuf *str,
+ const char *sep,
+ struct string_list *slist)
+{
+ struct string_list_item *item;
+ int sep_needed = 0;
+
+ for_each_string_list_item(item, slist) {
+ if (sep_needed)
+ strbuf_addstr(str, sep);
+ strbuf_addstr(str, item->string);
+ sep_needed = 1;
+ }
+}
+
void strbuf_list_free(struct strbuf **sbs)
{
struct strbuf **s = sbs;
int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
{
- int len = a->len < b->len ? a->len: b->len;
+ size_t len = a->len < b->len ? a->len: b->len;
int cmp = memcmp(a->buf, b->buf, len);
if (cmp)
return cmp;
strbuf_splice(sb, pos, 0, data, len);
}
+void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap)
+{
+ int len, len2;
+ char save;
+ va_list cp;
+
+ if (pos > sb->len)
+ die("`pos' is too far after the end of the buffer");
+ va_copy(cp, ap);
+ len = vsnprintf(sb->buf + sb->len, 0, fmt, cp);
+ va_end(cp);
+ if (len < 0)
+ BUG("your vsnprintf is broken (returned %d)", len);
+ if (!len)
+ return; /* nothing to do */
+ if (unsigned_add_overflows(sb->len, len))
+ die("you want to use way too much memory");
+ strbuf_grow(sb, len);
+ memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos);
+ /* vsnprintf() will append a NUL, overwriting one of our characters */
+ save = sb->buf[pos + len];
+ len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap);
+ sb->buf[pos + len] = save;
+ if (len2 != len)
+ BUG("your vsnprintf is broken (returns inconsistent lengths)");
+ strbuf_setlen(sb, sb->len + len);
+}
+
+void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ strbuf_vinsertf(sb, pos, fmt, ap);
+ va_end(ap);
+}
+
void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
{
- strbuf_splice(sb, pos, len, NULL, 0);
+ strbuf_splice(sb, pos, len, "", 0);
}
void strbuf_add(struct strbuf *sb, const void *data, size_t len)
strbuf_setlen(sb, sb->len + len);
}
-void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
+void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2)
{
- strbuf_grow(sb, len);
- memcpy(sb->buf + sb->len, sb->buf + pos, len);
- strbuf_setlen(sb, sb->len + len);
+ strbuf_grow(sb, sb2->len);
+ memcpy(sb->buf + sb->len, sb2->buf, sb2->len);
+ strbuf_setlen(sb, sb->len + sb2->len);
+}
+
+const char *strbuf_join_argv(struct strbuf *buf,
+ int argc, const char **argv, char delim)
+{
+ if (!argc)
+ return buf->buf;
+
+ strbuf_addstr(buf, *argv);
+ while (--argc) {
+ strbuf_addch(buf, delim);
+ strbuf_addstr(buf, *(++argv));
+ }
+
+ return buf->buf;
+}
+
+void strbuf_addchars(struct strbuf *sb, int c, size_t n)
+{
+ strbuf_grow(sb, n);
+ memset(sb->buf + sb->len, c, n);
+ strbuf_setlen(sb, sb->len + n);
}
void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
va_end(ap);
}
+static void add_lines(struct strbuf *out,
+ const char *prefix1,
+ const char *prefix2,
+ const char *buf, size_t size)
+{
+ while (size) {
+ const char *prefix;
+ const char *next = memchr(buf, '\n', size);
+ next = next ? (next + 1) : (buf + size);
+
+ prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
+ ? prefix2 : prefix1);
+ strbuf_addstr(out, prefix);
+ strbuf_add(out, buf, next - buf);
+ size -= next - buf;
+ buf = next;
+ }
+ strbuf_complete_line(out);
+}
+
+void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size)
+{
+ static char prefix1[3];
+ static char prefix2[2];
+
+ if (prefix1[0] != comment_line_char) {
+ xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char);
+ xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char);
+ }
+ add_lines(out, prefix1, prefix2, buf, size);
+}
+
+void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
+{
+ va_list params;
+ struct strbuf buf = STRBUF_INIT;
+ int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n';
+
+ va_start(params, fmt);
+ strbuf_vaddf(&buf, fmt, params);
+ va_end(params);
+
+ strbuf_add_commented_lines(sb, buf.buf, buf.len);
+ if (incomplete_line)
+ sb->buf[--sb->len] = '\0';
+
+ strbuf_release(&buf);
+}
+
void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap)
{
int len;
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);
+ 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)");
+ BUG("your vsnprintf is broken (insatiable)");
}
strbuf_setlen(sb, sb->len + len);
}
}
}
+size_t strbuf_expand_literal_cb(struct strbuf *sb,
+ const char *placeholder,
+ void *context)
+{
+ int ch;
+
+ switch (placeholder[0]) {
+ case 'n': /* newline */
+ strbuf_addch(sb, '\n');
+ return 1;
+ case 'x':
+ /* %x00 == NUL, %x0a == LF, etc. */
+ ch = hex2chr(placeholder + 1);
+ if (ch < 0)
+ return 0;
+ strbuf_addch(sb, ch);
+ return 3;
+ }
+ return 0;
+}
+
size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
void *context)
{
void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
{
- int i, len = src->len;
+ size_t i, len = src->len;
for (i = 0; i < len; i++) {
if (src->buf[i] == '%')
strbuf_grow(sb, hint ? hint : 8192);
for (;;) {
- ssize_t cnt;
+ ssize_t want = sb->alloc - sb->len - 1;
+ ssize_t got = read_in_full(fd, sb->buf + sb->len, want);
- cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
- if (cnt < 0) {
+ if (got < 0) {
if (oldalloc == 0)
strbuf_release(sb);
else
strbuf_setlen(sb, oldlen);
return -1;
}
- if (!cnt)
+ sb->len += got;
+ if (got < want)
break;
- sb->len += cnt;
strbuf_grow(sb, 8192);
}
return sb->len - oldlen;
}
+ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint)
+{
+ size_t oldalloc = sb->alloc;
+ ssize_t cnt;
+
+ strbuf_grow(sb, hint ? hint : 8192);
+ cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
+ if (cnt > 0)
+ strbuf_setlen(sb, sb->len + cnt);
+ else if (oldalloc == 0)
+ strbuf_release(sb);
+ return cnt;
+}
+
+ssize_t strbuf_write(struct strbuf *sb, FILE *f)
+{
+ return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
+}
+
+
#define STRBUF_MAXLINK (2*PATH_MAX)
int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
hint = 32;
while (hint < STRBUF_MAXLINK) {
- int len;
+ ssize_t len;
strbuf_grow(sb, hint);
len = readlink(path, sb->buf, hint);
return -1;
}
+int strbuf_getcwd(struct strbuf *sb)
+{
+ size_t oldalloc = sb->alloc;
+ size_t guessed_len = 128;
+
+ for (;; guessed_len *= 2) {
+ strbuf_grow(sb, guessed_len);
+ if (getcwd(sb->buf, sb->alloc)) {
+ strbuf_setlen(sb, strlen(sb->buf));
+ return 0;
+ }
+
+ /*
+ * If getcwd(3) is implemented as a syscall that falls
+ * back to a regular lookup using readdir(3) etc. then
+ * we may be able to avoid EACCES by providing enough
+ * space to the syscall as it's not necessarily bound
+ * to the same restrictions as the fallback.
+ */
+ if (errno == EACCES && guessed_len < PATH_MAX)
+ continue;
+
+ if (errno != ERANGE)
+ break;
+ }
+ if (oldalloc == 0)
+ strbuf_release(sb);
+ else
+ strbuf_reset(sb);
+ return -1;
+}
+
+#ifdef HAVE_GETDELIM
+int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
+{
+ ssize_t r;
+
+ if (feof(fp))
+ return EOF;
+
+ strbuf_reset(sb);
+
+ /* Translate slopbuf to NULL, as we cannot call realloc on it */
+ if (!sb->alloc)
+ sb->buf = NULL;
+ errno = 0;
+ r = getdelim(&sb->buf, &sb->alloc, term, fp);
+
+ if (r > 0) {
+ sb->len = r;
+ return 0;
+ }
+ assert(r == -1);
+
+ /*
+ * Normally we would have called xrealloc, which will try to free
+ * memory and recover. But we have no way to tell getdelim() to do so.
+ * Worse, we cannot try to recover ENOMEM ourselves, because we have
+ * no idea how many bytes were read by getdelim.
+ *
+ * Dying here is reasonable. It mirrors what xrealloc would do on
+ * catastrophic memory failure. We skip the opportunity to free pack
+ * memory and retry, but that's unlikely to help for a malloc small
+ * enough to hold a single line of input, anyway.
+ */
+ if (errno == ENOMEM)
+ die("Out of memory, getdelim failed");
+
+ /*
+ * Restore strbuf invariants; if getdelim left us with a NULL pointer,
+ * we can just re-init, but otherwise we should make sure that our
+ * length is empty, and that the result is NUL-terminated.
+ */
+ if (!sb->buf)
+ strbuf_init(sb, 0);
+ else
+ strbuf_reset(sb);
+ return EOF;
+}
+#else
int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
{
int ch;
return EOF;
strbuf_reset(sb);
- while ((ch = fgetc(fp)) != EOF) {
- strbuf_grow(sb, 1);
+ flockfile(fp);
+ while ((ch = getc_unlocked(fp)) != EOF) {
+ if (!strbuf_avail(sb))
+ strbuf_grow(sb, 1);
sb->buf[sb->len++] = ch;
if (ch == term)
break;
}
+ funlockfile(fp);
if (ch == EOF && sb->len == 0)
return EOF;
sb->buf[sb->len] = '\0';
return 0;
}
+#endif
-int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
+static int strbuf_getdelim(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);
+ if (sb->buf[sb->len - 1] == term)
+ strbuf_setlen(sb, sb->len - 1);
return 0;
}
+int strbuf_getline(struct strbuf *sb, FILE *fp)
+{
+ if (strbuf_getwholeline(sb, fp, '\n'))
+ return EOF;
+ if (sb->buf[sb->len - 1] == '\n') {
+ strbuf_setlen(sb, sb->len - 1);
+ if (sb->len && sb->buf[sb->len - 1] == '\r')
+ strbuf_setlen(sb, sb->len - 1);
+ }
+ return 0;
+}
+
+int strbuf_getline_lf(struct strbuf *sb, FILE *fp)
+{
+ return strbuf_getdelim(sb, fp, '\n');
+}
+
+int strbuf_getline_nul(struct strbuf *sb, FILE *fp)
+{
+ return strbuf_getdelim(sb, fp, '\0');
+}
+
int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
{
strbuf_reset(sb);
return 0;
}
-int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
+ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
{
- int fd, len;
+ int fd;
+ ssize_t len;
+ int saved_errno;
fd = open(path, O_RDONLY);
if (fd < 0)
return -1;
len = strbuf_read(sb, fd, hint);
+ saved_errno = errno;
close(fd);
- if (len < 0)
+ if (len < 0) {
+ errno = saved_errno;
return -1;
+ }
return len;
}
void strbuf_add_lines(struct strbuf *out, const char *prefix,
const char *buf, size_t size)
{
- while (size) {
- const char *next = memchr(buf, '\n', size);
- next = next ? (next + 1) : (buf + size);
- strbuf_addstr(out, prefix);
- strbuf_add(out, buf, next - buf);
- size -= next - buf;
- buf = next;
+ add_lines(out, prefix, NULL, buf, size);
+}
+
+void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
+{
+ while (*s) {
+ size_t len = strcspn(s, "\"<>&");
+ strbuf_add(buf, s, len);
+ s += len;
+ switch (*s) {
+ case '"':
+ strbuf_addstr(buf, """);
+ break;
+ case '<':
+ strbuf_addstr(buf, "<");
+ break;
+ case '>':
+ strbuf_addstr(buf, ">");
+ break;
+ case '&':
+ strbuf_addstr(buf, "&");
+ break;
+ case 0:
+ return;
+ }
+ s++;
}
- strbuf_complete_line(out);
}
static int is_rfc3986_reserved(char ch)
ch == '-' || ch == '_' || ch == '.' || ch == '~';
}
-void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
- int reserved)
+static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
+ int reserved)
{
strbuf_grow(sb, len);
while (len--) {
(!reserved && is_rfc3986_reserved(ch)))
strbuf_addch(sb, ch);
else
- strbuf_addf(sb, "%%%02x", ch);
+ strbuf_addf(sb, "%%%02x", (unsigned char)ch);
}
}
{
strbuf_add_urlencode(sb, s, strlen(s), reserved);
}
+
+static void strbuf_humanise(struct strbuf *buf, off_t bytes,
+ int humanise_rate)
+{
+ if (bytes > 1 << 30) {
+ strbuf_addf(buf,
+ humanise_rate == 0 ?
+ /* TRANSLATORS: IEC 80000-13:2008 gibibyte */
+ _("%u.%2.2u GiB") :
+ /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */
+ _("%u.%2.2u GiB/s"),
+ (unsigned)(bytes >> 30),
+ (unsigned)(bytes & ((1 << 30) - 1)) / 10737419);
+ } else if (bytes > 1 << 20) {
+ unsigned x = bytes + 5243; /* for rounding */
+ strbuf_addf(buf,
+ humanise_rate == 0 ?
+ /* TRANSLATORS: IEC 80000-13:2008 mebibyte */
+ _("%u.%2.2u MiB") :
+ /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */
+ _("%u.%2.2u MiB/s"),
+ x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20);
+ } else if (bytes > 1 << 10) {
+ unsigned x = bytes + 5; /* for rounding */
+ strbuf_addf(buf,
+ humanise_rate == 0 ?
+ /* TRANSLATORS: IEC 80000-13:2008 kibibyte */
+ _("%u.%2.2u KiB") :
+ /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */
+ _("%u.%2.2u KiB/s"),
+ x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10);
+ } else {
+ strbuf_addf(buf,
+ humanise_rate == 0 ?
+ /* TRANSLATORS: IEC 80000-13:2008 byte */
+ Q_("%u byte", "%u bytes", (unsigned)bytes) :
+ /* TRANSLATORS: IEC 80000-13:2008 byte/second */
+ Q_("%u byte/s", "%u bytes/s", (unsigned)bytes),
+ (unsigned)bytes);
+ }
+}
+
+void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)
+{
+ strbuf_humanise(buf, bytes, 0);
+}
+
+void strbuf_humanise_rate(struct strbuf *buf, off_t bytes)
+{
+ strbuf_humanise(buf, bytes, 1);
+}
+
+void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
+{
+ if (!*path)
+ die("The empty string is not a valid path");
+ if (!is_absolute_path(path)) {
+ struct stat cwd_stat, pwd_stat;
+ size_t orig_len = sb->len;
+ char *cwd = xgetcwd();
+ char *pwd = getenv("PWD");
+ if (pwd && strcmp(pwd, cwd) &&
+ !stat(cwd, &cwd_stat) &&
+ (cwd_stat.st_dev || cwd_stat.st_ino) &&
+ !stat(pwd, &pwd_stat) &&
+ pwd_stat.st_dev == cwd_stat.st_dev &&
+ pwd_stat.st_ino == cwd_stat.st_ino)
+ strbuf_addstr(sb, pwd);
+ else
+ strbuf_addstr(sb, cwd);
+ if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
+ strbuf_addch(sb, '/');
+ free(cwd);
+ }
+ strbuf_addstr(sb, path);
+}
+
+void strbuf_add_real_path(struct strbuf *sb, const char *path)
+{
+ if (sb->len) {
+ struct strbuf resolved = STRBUF_INIT;
+ strbuf_realpath(&resolved, path, 1);
+ strbuf_addbuf(sb, &resolved);
+ strbuf_release(&resolved);
+ } else
+ strbuf_realpath(sb, path, 1);
+}
+
+int printf_ln(const char *fmt, ...)
+{
+ int ret;
+ va_list ap;
+ va_start(ap, fmt);
+ ret = vprintf(fmt, ap);
+ va_end(ap);
+ if (ret < 0 || putchar('\n') == EOF)
+ return -1;
+ return ret + 1;
+}
+
+int fprintf_ln(FILE *fp, const char *fmt, ...)
+{
+ int ret;
+ va_list ap;
+ va_start(ap, fmt);
+ ret = vfprintf(fp, fmt, ap);
+ va_end(ap);
+ if (ret < 0 || putc('\n', fp) == EOF)
+ return -1;
+ return ret + 1;
+}
+
+char *xstrdup_tolower(const char *string)
+{
+ char *result;
+ size_t len, i;
+
+ len = strlen(string);
+ result = xmallocz(len);
+ for (i = 0; i < len; i++)
+ result[i] = tolower(string[i]);
+ return result;
+}
+
+char *xstrdup_toupper(const char *string)
+{
+ char *result;
+ size_t len, i;
+
+ len = strlen(string);
+ result = xmallocz(len);
+ for (i = 0; i < len; i++)
+ result[i] = toupper(string[i]);
+ return result;
+}
+
+char *xstrvfmt(const char *fmt, va_list ap)
+{
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_vaddf(&buf, fmt, ap);
+ return strbuf_detach(&buf, NULL);
+}
+
+char *xstrfmt(const char *fmt, ...)
+{
+ va_list ap;
+ char *ret;
+
+ va_start(ap, fmt);
+ ret = xstrvfmt(fmt, ap);
+ va_end(ap);
+
+ return ret;
+}
+
+void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm,
+ int tz_offset, int suppress_tz_name)
+{
+ struct strbuf munged_fmt = STRBUF_INIT;
+ size_t hint = 128;
+ size_t len;
+
+ if (!*fmt)
+ return;
+
+ /*
+ * There is no portable way to pass timezone information to
+ * strftime, so we handle %z and %Z here.
+ */
+ for (;;) {
+ const char *percent = strchrnul(fmt, '%');
+ strbuf_add(&munged_fmt, fmt, percent - fmt);
+ if (!*percent)
+ break;
+ fmt = percent + 1;
+ switch (*fmt) {
+ case '%':
+ strbuf_addstr(&munged_fmt, "%%");
+ fmt++;
+ break;
+ case 'z':
+ strbuf_addf(&munged_fmt, "%+05d", tz_offset);
+ fmt++;
+ break;
+ case 'Z':
+ if (suppress_tz_name) {
+ fmt++;
+ break;
+ }
+ /* FALLTHROUGH */
+ default:
+ strbuf_addch(&munged_fmt, '%');
+ }
+ }
+ fmt = munged_fmt.buf;
+
+ strbuf_grow(sb, hint);
+ len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm);
+
+ if (!len) {
+ /*
+ * strftime reports "0" if it could not fit the result in the buffer.
+ * Unfortunately, it also reports "0" if the requested time string
+ * takes 0 bytes. So our strategy is to munge the format so that the
+ * output contains at least one character, and then drop the extra
+ * character before returning.
+ */
+ strbuf_addch(&munged_fmt, ' ');
+ while (!len) {
+ hint *= 2;
+ strbuf_grow(sb, hint);
+ len = strftime(sb->buf + sb->len, sb->alloc - sb->len,
+ munged_fmt.buf, tm);
+ }
+ len--; /* drop munged space */
+ }
+ strbuf_release(&munged_fmt);
+ strbuf_setlen(sb, sb->len + len);
+}
+
+void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid,
+ int abbrev_len)
+{
+ int r;
+ strbuf_grow(sb, GIT_MAX_HEXSZ + 1);
+ r = find_unique_abbrev_r(sb->buf + sb->len, oid, abbrev_len);
+ strbuf_setlen(sb, sb->len + r);
+}
+
+/*
+ * Returns the length of a line, without trailing spaces.
+ *
+ * If the line ends with newline, it will be removed too.
+ */
+static size_t cleanup(char *line, size_t len)
+{
+ while (len) {
+ unsigned char c = line[len - 1];
+ if (!isspace(c))
+ break;
+ len--;
+ }
+
+ return len;
+}
+
+/*
+ * Remove empty lines from the beginning and end
+ * and also trailing spaces from every line.
+ *
+ * Turn multiple consecutive empty lines between paragraphs
+ * into just one empty line.
+ *
+ * If the input has only empty lines and spaces,
+ * no output will be produced.
+ *
+ * If last line does not have a newline at the end, one is added.
+ *
+ * Enable skip_comments to skip every line starting with comment
+ * character.
+ */
+void strbuf_stripspace(struct strbuf *sb, int skip_comments)
+{
+ size_t empties = 0;
+ size_t i, j, len, newlen;
+ char *eol;
+
+ /* We may have to add a newline. */
+ strbuf_grow(sb, 1);
+
+ for (i = j = 0; i < sb->len; i += len, j += newlen) {
+ eol = memchr(sb->buf + i, '\n', sb->len - i);
+ len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;
+
+ if (skip_comments && len && sb->buf[i] == comment_line_char) {
+ newlen = 0;
+ continue;
+ }
+ newlen = cleanup(sb->buf + i, len);
+
+ /* Not just an empty line? */
+ if (newlen) {
+ if (empties > 0 && j > 0)
+ sb->buf[j++] = '\n';
+ empties = 0;
+ memmove(sb->buf + j, sb->buf + i, newlen);
+ sb->buf[newlen + j++] = '\n';
+ } else {
+ empties++;
+ }
+ }
+
+ strbuf_setlen(sb, j);
+}
+
+int strbuf_normalize_path(struct strbuf *src)
+{
+ struct strbuf dst = STRBUF_INIT;
+
+ strbuf_grow(&dst, src->len);
+ if (normalize_path_copy(dst.buf, src->buf) < 0) {
+ strbuf_release(&dst);
+ return -1;
+ }
+
+ /*
+ * normalize_path does not tell us the new length, so we have to
+ * compute it by looking for the new NUL it placed
+ */
+ strbuf_setlen(&dst, strlen(dst.buf));
+ strbuf_swap(src, &dst);
+ strbuf_release(&dst);
+ return 0;
+}
projects / platform / upstream / git.git / blobdiff