Fix rewrite_diff() name quoting.

This moves the logic to quote two paths (prefix + path) in
C-style introduced in the previous commit from the
dump_quoted_path() in combine-diff.c to quote.c, and uses it to
fix rewrite_diff() that never C-quoted the pathnames correctly.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/combine-diff.c b/combine-diff.c
index 7d710334ffa9ce4fa82145f4b1745d048635c475..0e19cbaacc1099fd69f7f2d9b4a17c94a327baa9 100644 (file)
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -656,16 +656,7 @@ static void dump_quoted_path(const char *head,
        strbuf_reset(&buf);
        strbuf_addstr(&buf, c_meta);
        strbuf_addstr(&buf, head);
-       if (quote_c_style(prefix, NULL, NULL, 0) ||
-           quote_c_style(path, NULL, NULL, 0)) {
-               strbuf_addch(&buf, '"');
-               quote_c_style(prefix, &buf, NULL, 1);
-               quote_c_style(path, &buf, NULL, 1);
-               strbuf_addch(&buf, '"');
-       } else {
-               strbuf_addstr(&buf, prefix);
-               strbuf_addstr(&buf, path);
-       }
+       quote_two_c_style(&buf, prefix, path, 0);
        strbuf_addstr(&buf, c_reset);
        puts(buf.buf);
 }

diff --git a/diff.c b/diff.c
index 61fd49236ad505abb6a62b8b014efd6a9ddbff6b..5bdc111378d61e5bdb13d1908217ab44bfc7967d 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -300,19 +300,25 @@ static void emit_rewrite_diff(const char *name_a,
        const char *old = diff_get_color(color_diff, DIFF_FILE_OLD);
        const char *new = diff_get_color(color_diff, DIFF_FILE_NEW);
        const char *reset = diff_get_color(color_diff, DIFF_RESET);
+       static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT;
 
        name_a += (*name_a == '/');
        name_b += (*name_b == '/');
        name_a_tab = strchr(name_a, ' ') ? "\t" : "";
        name_b_tab = strchr(name_b, ' ') ? "\t" : "";
 
+       strbuf_reset(&a_name);
+       strbuf_reset(&b_name);
+       quote_two_c_style(&a_name, o->a_prefix, name_a, 0);
+       quote_two_c_style(&b_name, o->b_prefix, name_b, 0);
+
        diff_populate_filespec(one, 0);
        diff_populate_filespec(two, 0);
        lc_a = count_lines(one->data, one->size);
        lc_b = count_lines(two->data, two->size);
-       printf("%s--- %s%s%s%s\n%s+++ %s%s%s%s\n%s@@ -",
-              metainfo, o->a_prefix, name_a, name_a_tab, reset,
-              metainfo, o->b_prefix, name_b, name_b_tab, reset, fraginfo);
+       printf("%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -",
+              metainfo, a_name.buf, name_a_tab, reset,
+              metainfo, b_name.buf, name_b_tab, reset, fraginfo);
        print_line_count(lc_a);
        printf(" +");
        print_line_count(lc_b);

diff --git a/quote.c b/quote.c
index 6986b4420f66e1f01cd4517d35ce9adc300eaa8b..d061626c34f1e62c538db6e931c29751be4fdbcf 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -213,6 +213,22 @@ size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq)
        return quote_c_style_counted(name, -1, sb, fp, nodq);
 }
 
+void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq)
+{
+       if (quote_c_style(prefix, NULL, NULL, 0) ||
+           quote_c_style(path, NULL, NULL, 0)) {
+               if (!nodq)
+                       strbuf_addch(sb, '"');
+               quote_c_style(prefix, sb, NULL, 1);
+               quote_c_style(path, sb, NULL, 1);
+               if (!nodq)
+                       strbuf_addch(sb, '"');
+       } else {
+               strbuf_addstr(sb, prefix);
+               strbuf_addstr(sb, path);
+       }
+}
+
 void write_name_quoted(const char *name, FILE *fp, int terminator)
 {
        if (terminator) {

diff --git a/quote.h b/quote.h
index ab7596f57b7f23899ef1bbb8d0c7ba6ec5baf12f..4da110ec01331f346705199dde709436622967cb 100644 (file)
--- a/quote.h
+++ b/quote.h
@@ -41,6 +41,7 @@ extern char *sq_dequote(char *);
 
 extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp);
 extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq);
+extern void quote_two_c_style(struct strbuf *, const char *, const char *, int);
 
 extern void write_name_quoted(const char *name, FILE *, int terminator);
 extern void write_name_quotedpfx(const char *pfx, size_t pfxlen,