[PATCH 2/2] git status: show relative paths when run in a subdirectory

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Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---

	This looks a bit ugly because quote_crlf() is now also called
	on the untracked files, which are not NUL terminated.

	Maybe someone has an idea how to do this more elegantly.

 builtin-runstatus.c |    1 +
 wt-status.c         |   50 ++++++++++++++++++++++++++++++++++++++++++--------
 wt-status.h         |    1 +
 3 files changed, 44 insertions(+), 8 deletions(-)

diff --git a/builtin-runstatus.c b/builtin-runstatus.c
index 2db25c8..8d167a9 100644
--- a/builtin-runstatus.c
+++ b/builtin-runstatus.c
@@ -14,6 +14,7 @@ int cmd_runstatus(int argc, const char **argv, const char *prefix)
 
 	git_config(git_status_config);
 	wt_status_prepare(&s);
+	s.prefix = prefix;
 
 	for (i = 1; i < argc; i++) {
 		if (!strcmp(argv[i], "--color"))
diff --git a/wt-status.c b/wt-status.c
index 03b5ec4..7386d41 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -82,16 +82,48 @@ static void wt_status_print_trailer(struct wt_status *s)
 	color_fprintf_ln(s->fp, color(WT_STATUS_HEADER), "#");
 }
 
-static const char *quote_crlf(const char *in, char *buf, size_t sz)
+static const char *quote_crlf(const char *in, int len, char *buf, size_t sz,
+	const char *prefix)
 {
 	const char *scan;
 	char *out;
 	const char *ret = in;
+	int off = 0;
+
+	if (len < 0)
+		len = strlen(in);
+
+	if (prefix) {
+		while (prefix[off] && off < len && prefix[off] == in[off])
+			if (prefix[off] == '/') {
+				prefix += off + 1;
+				in += off + 1;
+				len -= off + 1;
+				off = 0;
+			} else
+				off++;
+		for (off = 0; *prefix; prefix++)
+			if (*prefix == '/') {
+				if (off + 4 >= sz) {
+					warning ("Could not prefix path: %s",
+						in);
+					return in;
+				}
+				strcpy(buf + off, "../");
+				off += 3;
+			}
+		ret = buf;
+	}
 
-	for (scan = in, out = buf; *scan; scan++) {
+	for (scan = in, out = buf + off; len; scan++, len--) {
 		int ch = *scan;
 		int quoted;
 
+		if (out - buf + 3 >= sz) {
+			warning ("Could not quote path: %s", in);
+			break;
+		}
+
 		switch (ch) {
 		case '\n':
 			quoted = 'n';
@@ -118,8 +150,8 @@ static void wt_status_print_filepair(struct wt_status *s,
 	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));
+	one = quote_crlf(p->one->path, -1, onebuf, sizeof(onebuf), s->prefix);
+	two = quote_crlf(p->two->path, -1, twobuf, sizeof(twobuf), s->prefix);
 
 	color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 	switch (p->status) {
@@ -215,8 +247,8 @@ static void wt_status_print_initial(struct wt_status *s)
 	for (i = 0; i < active_nr; i++) {
 		color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
 		color_fprintf_ln(s->fp, color(WT_STATUS_UPDATED), "new file: %s",
-				quote_crlf(active_cache[i]->name,
-					   buf, sizeof(buf)));
+				quote_crlf(active_cache[i]->name, -1,
+					   buf, sizeof(buf), s->prefix));
 	}
 	if (active_nr)
 		wt_status_print_trailer(s);
@@ -254,6 +286,7 @@ static void wt_status_print_untracked(struct wt_status *s)
 	const char *x;
 	int i;
 	int shown_header = 0;
+	char buf[PATH_MAX];
 
 	memset(&dir, 0, sizeof(dir));
 
@@ -291,8 +324,9 @@ static void wt_status_print_untracked(struct wt_status *s)
 			shown_header = 1;
 		}
 		color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
-		color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%.*s",
-				ent->len, ent->name);
+		color_fprintf_ln(s->fp, color(WT_STATUS_UNTRACKED), "%s",
+				quote_crlf(ent->name, ent->len,
+					buf, sizeof(buf), s->prefix));
 	}
 }
 
diff --git a/wt-status.h b/wt-status.h
index 7744932..f58ebcb 100644
--- a/wt-status.h
+++ b/wt-status.h
@@ -23,6 +23,7 @@ struct wt_status {
 	int workdir_untracked;
 	const char *index_file;
 	FILE *fp;
+	const char *prefix;
 };
 
 int git_status_config(const char *var, const char *value);
-- 
1.5.3.5.1597.g7191


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