diff options
Diffstat (limited to 'third_party/git/strbuf.c')
| -rw-r--r-- | third_party/git/strbuf.c | 1126 |
1 files changed, 0 insertions, 1126 deletions
diff --git a/third_party/git/strbuf.c b/third_party/git/strbuf.c deleted file mode 100644 index d30f916858..0000000000 --- a/third_party/git/strbuf.c +++ /dev/null @@ -1,1126 +0,0 @@ -#include "cache.h" -#include "refs.h" -#include "string-list.h" -#include "utf8.h" - -int starts_with(const char *str, const char *prefix) -{ - for (; ; str++, prefix++) - if (!*prefix) - return 1; - else if (*str != *prefix) - return 0; -} - -int istarts_with(const char *str, const char *prefix) -{ - 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; -} - -/* - * 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; - strbuf_grow(sb, 0); - res = sb->buf; - 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) -{ - int new_buf = !sb->alloc; - if (unsigned_add_overflows(extra, 1) || - unsigned_add_overflows(sb->len, extra + 1)) - die("you want to use way too much memory"); - if (new_buf) - sb->buf = NULL; - ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); - if (new_buf) - sb->buf[0] = '\0'; -} - -void strbuf_trim(struct strbuf *sb) -{ - 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--; - sb->buf[sb->len] = '\0'; -} - -void strbuf_trim_trailing_dir_sep(struct strbuf *sb) -{ - 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; - while (sb->len > 0 && isspace(*b)) { - b++; - sb->len--; - } - memmove(sb->buf, b, sb->len); - sb->buf[sb->len] = '\0'; -} - -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) -{ - struct strbuf **ret = NULL; - size_t nr = 0, alloc = 0; - struct strbuf *t; - - while (slen) { - int len = slen; - if (max <= 0 || nr + 1 < max) { - const char *end = memchr(str, terminator, slen); - if (end) - len = end - str + 1; - } - t = xmalloc(sizeof(struct strbuf)); - strbuf_init(t, len); - 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; - - while (*s) { - strbuf_release(*s); - free(*s++); - } - free(sbs); -} - -int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) -{ - size_t 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_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, "", 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_addbuf(struct strbuf *sb, const struct strbuf *sb2) -{ - 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_list ap; - va_start(ap, fmt); - strbuf_vaddf(sb, fmt, ap); - 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; - 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) - 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)) - 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_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) -{ - 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) -{ - size_t 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 want = sb->alloc - sb->len - 1; - ssize_t got = read_in_full(fd, sb->buf + sb->len, want); - - if (got < 0) { - if (oldalloc == 0) - strbuf_release(sb); - else - strbuf_setlen(sb, oldlen); - return -1; - } - sb->len += got; - if (got < want) - break; - strbuf_grow(sb, 8192); - } - - sb->buf[sb->len] = '\0'; - 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) -{ - size_t oldalloc = sb->alloc; - - if (hint < 32) - hint = 32; - - while (hint < STRBUF_MAXLINK) { - ssize_t 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_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; - - if (feof(fp)) - return EOF; - - strbuf_reset(sb); - 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 - -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); - 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); - - while (1) { - char ch; - ssize_t len = xread(fd, &ch, 1); - if (len <= 0) - return EOF; - strbuf_addch(sb, ch); - if (ch == term) - break; - } - return 0; -} - -ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) -{ - 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) { - errno = saved_errno; - return -1; - } - - return len; -} - -void strbuf_add_lines(struct strbuf *out, const char *prefix, - const char *buf, size_t size) -{ - 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++; - } -} - -static int is_rfc3986_reserved(char ch) -{ - switch (ch) { - case '!': case '*': case '\'': case '(': case ')': case ';': - case ':': case '@': case '&': case '=': case '+': case '$': - case ',': case '/': case '?': case '#': case '[': case ']': - return 1; - } - return 0; -} - -static int is_rfc3986_unreserved(char ch) -{ - return isalnum(ch) || - ch == '-' || ch == '_' || ch == '.' || ch == '~'; -} - -static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, - int reserved) -{ - strbuf_grow(sb, len); - while (len--) { - char ch = *s++; - if (is_rfc3986_unreserved(ch) || - (!reserved && is_rfc3986_reserved(ch))) - strbuf_addch(sb, ch); - else - strbuf_addf(sb, "%%%02x", (unsigned char)ch); - } -} - -void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, - int reserved) -{ - 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; -} |