Merge branch 'jn/diffstat-tests'

[git.git] / utf8.c

diff --git a/utf8.c b/utf8.c
index ab326ac83e0d9e81b06abff58b00a98341adcd36..8acbc660d31a3552a4451749353139e0dcd371bd 100644 (file)
--- a/utf8.c
+++ b/utf8.c
@@ -280,22 +280,11 @@ int is_utf8(const char *text)
        return 1;
 }
 
-static inline void strbuf_write(struct strbuf *sb, const char *buf, int len)
+static void strbuf_addchars(struct strbuf *sb, int c, size_t n)
 {
-       if (sb)
-               strbuf_insert(sb, sb->len, buf, len);
-       else
-               fwrite(buf, len, 1, stdout);
-}
-
-static void print_spaces(struct strbuf *buf, int count)
-{
-       static const char s[] = "                    ";
-       while (count >= sizeof(s)) {
-               strbuf_write(buf, s, sizeof(s) - 1);
-               count -= sizeof(s) - 1;
-       }
-       strbuf_write(buf, s, count);
+       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,
@@ -307,8 +296,8 @@ static void strbuf_add_indented_text(struct strbuf *buf, const char *text,
                const char *eol = strchrnul(text, '\n');
                if (*eol == '\n')
                        eol++;
-               print_spaces(buf, indent);
-               strbuf_write(buf, text, eol - text);
+               strbuf_addchars(buf, ' ', indent);
+               strbuf_add(buf, text, eol - text);
                text = eol;
                indent = indent2;
        }
@@ -335,16 +324,21 @@ static size_t display_mode_esc_sequence_len(const char *s)
  * consumed (and no extra indent is necessary for the first line).
  */
 int strbuf_add_wrapped_text(struct strbuf *buf,
-               const char *text, int indent, int indent2, int width)
+               const char *text, int indent1, int indent2, int width)
 {
-       int w = indent, assume_utf8 = is_utf8(text);
-       const char *bol = text, *space = NULL;
+       int indent, w, assume_utf8 = 1;
+       const char *bol, *space, *start = text;
+       size_t orig_len = buf->len;
 
        if (width <= 0) {
-               strbuf_add_indented_text(buf, text, indent, indent2);
+               strbuf_add_indented_text(buf, text, indent1, indent2);
                return 1;
        }
 
+retry:
+       bol = text;
+       w = indent = indent1;
+       space = NULL;
        if (indent < 0) {
                w = -indent;
                space = text;
@@ -366,8 +360,8 @@ int strbuf_add_wrapped_text(struct strbuf *buf,
                                if (space)
                                        start = space;
                                else
-                                       print_spaces(buf, indent);
-                               strbuf_write(buf, start, text - start);
+                                       strbuf_addchars(buf, ' ', indent);
+                               strbuf_add(buf, start, text - start);
                                if (!c)
                                        return w;
                                space = text;
@@ -376,38 +370,48 @@ int strbuf_add_wrapped_text(struct strbuf *buf,
                                else if (c == '\n') {
                                        space++;
                                        if (*space == '\n') {
-                                               strbuf_write(buf, "\n", 1);
+                                               strbuf_addch(buf, '\n');
                                                goto new_line;
                                        }
                                        else if (!isalnum(*space))
                                                goto new_line;
                                        else
-                                               strbuf_write(buf, " ", 1);
+                                               strbuf_addch(buf, ' ');
                                }
                                w++;
                                text++;
                        }
                        else {
 new_line:
-                               strbuf_write(buf, "\n", 1);
+                               strbuf_addch(buf, '\n');
                                text = bol = space + isspace(*space);
                                space = NULL;
                                w = indent = indent2;
                        }
                        continue;
                }
-               if (assume_utf8)
+               if (assume_utf8) {
                        w += utf8_width(&text, NULL);
-               else {
+                       if (!text) {
+                               assume_utf8 = 0;
+                               text = start;
+                               strbuf_setlen(buf, orig_len);
+                               goto retry;
+                       }
+               } else {
                        w++;
                        text++;
                }
        }
 }
 
-int print_wrapped_text(const char *text, int indent, int indent2, int width)
+int strbuf_add_wrapped_bytes(struct strbuf *buf, const char *data, int len,
+                            int indent, int indent2, int width)
 {
-       return strbuf_add_wrapped_text(NULL, text, indent, indent2, width);
+       char *tmp = xstrndup(data, len);
+       int r = strbuf_add_wrapped_text(buf, tmp, indent, indent2, width);
+       free(tmp);
+       return r;
 }
 
 int is_encoding_utf8(const char *name)