git-status: quote LF in its output

Otherwise, commit log template would get the remainder of the
filename start on a new line unquoted and the log gets messed
up.

I initially considered using the full quote_c_style(), but the
output from the command is primarily for human consumption so
chose to leave other control characters and bytes with high-bits
unmolested.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/wt-status.c b/wt-status.c
index 794394480c806d05ae3029b391b4444606da088f..de1be5bc66de634e41c7ef3dee08209631249e13 100644 (file)
--- a/wt-status.c
+++ b/wt-status.c
@@ -64,31 +64,70 @@ static void wt_status_print_trailer(void)
        color_printf_ln(color(WT_STATUS_HEADER), "#");
 }
 
+static const char *quote_crlf(const char *in, char *buf, size_t sz)
+{
+       const char *scan;
+       char *out;
+       const char *ret = in;
+
+       for (scan = in, out = buf; *scan; scan++) {
+               int ch = *scan;
+               int quoted;
+
+               switch (ch) {
+               case '\n':
+                       quoted = 'n';
+                       break;
+               case '\r':
+                       quoted = 'r';
+                       break;
+               default:
+                       *out++ = ch;
+                       continue;
+               }
+               *out++ = '\\';
+               *out++ = quoted;
+               ret = buf;
+       }
+       *out = '\0';
+       return ret;
+}
+
 static void wt_status_print_filepair(int t, struct diff_filepair *p)
 {
        const char *c = color(t);
+       const char *one, *two;
+       char onebuf[PATH_MAX], twobuf[PATH_MAX];
+
+       one = quote_crlf(p->one->path, onebuf, sizeof(onebuf));
+       two = quote_crlf(p->two->path, twobuf, sizeof(twobuf));
+
        color_printf(color(WT_STATUS_HEADER), "#\t");
        switch (p->status) {
        case DIFF_STATUS_ADDED:
-               color_printf(c, "new file:   %s", p->one->path); break;
+               color_printf(c, "new file:   %s", one);
+               break;
        case DIFF_STATUS_COPIED:
-               color_printf(c, "copied:     %s -> %s",
-                               p->one->path, p->two->path);
+               color_printf(c, "copied:     %s -> %s", one, two);
                break;
        case DIFF_STATUS_DELETED:
-               color_printf(c, "deleted:    %s", p->one->path); break;
+               color_printf(c, "deleted:    %s", one);
+               break;
        case DIFF_STATUS_MODIFIED:
-               color_printf(c, "modified:   %s", p->one->path); break;
+               color_printf(c, "modified:   %s", one);
+               break;
        case DIFF_STATUS_RENAMED:
-               color_printf(c, "renamed:    %s -> %s",
-                               p->one->path, p->two->path);
+               color_printf(c, "renamed:    %s -> %s", one, two);
                break;
        case DIFF_STATUS_TYPE_CHANGED:
-               color_printf(c, "typechange: %s", p->one->path); break;
+               color_printf(c, "typechange: %s", one);
+               break;
        case DIFF_STATUS_UNKNOWN:
-               color_printf(c, "unknown:    %s", p->one->path); break;
+               color_printf(c, "unknown:    %s", one);
+               break;
        case DIFF_STATUS_UNMERGED:
-               color_printf(c, "unmerged:   %s", p->one->path); break;
+               color_printf(c, "unmerged:   %s", one);
+               break;
        default:
                die("bug: unhandled diff status %c", p->status);
        }
@@ -134,6 +173,8 @@ static void wt_status_print_changed_cb(struct diff_queue_struct *q,
 void wt_status_print_initial(struct wt_status *s)
 {
        int i;
+       char buf[PATH_MAX];
+
        read_cache();
        if (active_nr) {
                s->commitable = 1;
@@ -143,7 +184,8 @@ void wt_status_print_initial(struct wt_status *s)
        for (i = 0; i < active_nr; i++) {
                color_printf(color(WT_STATUS_HEADER), "#\t");
                color_printf_ln(color(WT_STATUS_UPDATED), "new file: %s",
-                               active_cache[i]->name);
+                               quote_crlf(active_cache[i]->name,
+                                          buf, sizeof(buf)));
        }
        if (active_nr)
                wt_status_print_trailer();