return chrlen;
}
+
+/*
+ * Pick the next char from the stream, ignoring codepoints an HFS+ would.
+ * Note that this is _not_ complete by any means. It's just enough
+ * to make is_hfs_dotgit() work, and should not be used otherwise.
+ */
+static ucs_char_t next_hfs_char(const char **in)
+{
+ while (1) {
+ ucs_char_t out = pick_one_utf8_char(in, NULL);
+ /*
+ * check for malformed utf8. Technically this
+ * gets converted to a percent-sequence, but
+ * returning 0 is good enough for is_hfs_dotgit
+ * to realize it cannot be .git
+ */
+ if (!*in)
+ return 0;
+
+ /* these code points are ignored completely */
+ switch (out) {
+ case 0x200c: /* ZERO WIDTH NON-JOINER */
+ case 0x200d: /* ZERO WIDTH JOINER */
+ case 0x200e: /* LEFT-TO-RIGHT MARK */
+ case 0x200f: /* RIGHT-TO-LEFT MARK */
+ case 0x202a: /* LEFT-TO-RIGHT EMBEDDING */
+ case 0x202b: /* RIGHT-TO-LEFT EMBEDDING */
+ case 0x202c: /* POP DIRECTIONAL FORMATTING */
+ case 0x202d: /* LEFT-TO-RIGHT OVERRIDE */
+ case 0x202e: /* RIGHT-TO-LEFT OVERRIDE */
+ case 0x206a: /* INHIBIT SYMMETRIC SWAPPING */
+ case 0x206b: /* ACTIVATE SYMMETRIC SWAPPING */
+ case 0x206c: /* INHIBIT ARABIC FORM SHAPING */
+ case 0x206d: /* ACTIVATE ARABIC FORM SHAPING */
+ case 0x206e: /* NATIONAL DIGIT SHAPES */
+ case 0x206f: /* NOMINAL DIGIT SHAPES */
+ case 0xfeff: /* ZERO WIDTH NO-BREAK SPACE */
+ continue;
+ }
+
+ return out;
+ }
+}
+
+int is_hfs_dotgit(const char *path)
+{
+ ucs_char_t c;
+
+ c = next_hfs_char(&path);
+ if (c != '.')
+ return 0;
+ c = next_hfs_char(&path);
+
+ /*
+ * there's a great deal of other case-folding that occurs
+ * in HFS+, but this is enough to catch anything that will
+ * convert to ".git"
+ */
+ if (c != 'g' && c != 'G')
+ return 0;
+ c = next_hfs_char(&path);
+ if (c != 'i' && c != 'I')
+ return 0;
+ c = next_hfs_char(&path);
+ if (c != 't' && c != 'T')
+ return 0;
+ c = next_hfs_char(&path);
+ if (c && !is_dir_sep(c))
+ return 0;
+
+ return 1;
+}
+
+const char utf8_bom[] = "\357\273\277";
+
+int skip_utf8_bom(char **text, size_t len)
+{
+ if (len < strlen(utf8_bom) ||
+ memcmp(*text, utf8_bom, strlen(utf8_bom)))
+ return 0;
+ *text += strlen(utf8_bom);
+ return 1;
+}
+
+void strbuf_utf8_align(struct strbuf *buf, align_type position, unsigned int width,
+ const char *s)
+{
+ int slen = strlen(s);
+ int display_len = utf8_strnwidth(s, slen, 0);
+ int utf8_compensation = slen - display_len;
+
+ if (display_len >= width) {
+ strbuf_addstr(buf, s);
+ return;
+ }
+
+ if (position == ALIGN_LEFT)
+ strbuf_addf(buf, "%-*s", width + utf8_compensation, s);
+ else if (position == ALIGN_MIDDLE) {
+ int left = (width - display_len) / 2;
+ strbuf_addf(buf, "%*s%-*s", left, "", width - left + utf8_compensation, s);
+ } else if (position == ALIGN_RIGHT)
+ strbuf_addf(buf, "%*s", width + utf8_compensation, s);
+}