diff options
Diffstat (limited to 'utf8.c')
| -rw-r--r-- | utf8.c | 82 |
1 files changed, 75 insertions, 7 deletions
@@ -239,13 +239,6 @@ int is_utf8(const char *text) return 1; } -static 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); -} - static void strbuf_add_indented_text(struct strbuf *buf, const char *text, int indent, int indent2) { @@ -382,6 +375,9 @@ void strbuf_utf8_replace(struct strbuf *sb_src, int pos, int width, dst += n; } + if (src >= end) + break; + old = src; n = utf8_width((const char**)&src, NULL); if (!src) /* broken utf-8, do nothing */ @@ -565,3 +561,75 @@ int mbs_chrlen(const char **text, size_t *remainder_p, const char *encoding) 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; +} |