unpack-trees: do not muck with attributes when we are not checking out

diff --git a/quote.c b/quote.c
index 6986b4420f66e1f01cd4517d35ce9adc300eaa8b..7a49fcf69671646a0d3ba6de6478cfc6767c31fe 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -1,6 +1,8 @@
 #include "cache.h"
 #include "quote.h"
 
+int quote_path_fully = 1;
+
 /* Help to copy the thing properly quoted for the shell safety.
  * any single quote is replaced with '\'', any exclamation point
  * is replaced with '\!', and the whole thing is enclosed in a
@@ -70,7 +72,7 @@ void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen)
        }
 }
 
-char *sq_dequote(char *arg)
+char *sq_dequote_step(char *arg, char **next)
 {
        char *dst = arg;
        char *src = arg;
@@ -90,6 +92,8 @@ char *sq_dequote(char *arg)
                switch (*++src) {
                case '\0':
                        *dst = 0;
+                       if (next)
+                               *next = NULL;
                        return arg;
                case '\\':
                        c = *++src;
@@ -99,11 +103,40 @@ char *sq_dequote(char *arg)
                        }
                /* Fallthrough */
                default:
-                       return NULL;
+                       if (!next || !isspace(*src))
+                               return NULL;
+                       do {
+                               c = *++src;
+                       } while (isspace(c));
+                       *dst = 0;
+                       *next = src;
+                       return arg;
                }
        }
 }
 
+char *sq_dequote(char *arg)
+{
+       return sq_dequote_step(arg, NULL);
+}
+
+int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc)
+{
+       char *next = arg;
+
+       if (!*arg)
+               return 0;
+       do {
+               char *dequoted = sq_dequote_step(next, &next);
+               if (!dequoted)
+                       return -1;
+               ALLOC_GROW(*argv, *nr + 1, *alloc);
+               (*argv)[(*nr)++] = dequoted;
+       } while (next);
+
+       return 0;
+}
+
 /* 1 means: quote as octal
  * 0 means: quote as octal if (quote_path_fully)
  * -1 means: never quote
@@ -213,6 +246,22 @@ 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) {
@@ -244,6 +293,48 @@ extern void write_name_quotedpfx(const char *pfx, size_t pfxlen,
        fputc(terminator, fp);
 }
 
+/* quote path as relative to the given prefix */
+char *quote_path_relative(const char *in, int len,
+                         struct strbuf *out, const char *prefix)
+{
+       int needquote;
+
+       if (len < 0)
+               len = strlen(in);
+
+       /* "../" prefix itself does not need quoting, but "in" might. */
+       needquote = next_quote_pos(in, len) < len;
+       strbuf_setlen(out, 0);
+       strbuf_grow(out, len);
+
+       if (needquote)
+               strbuf_addch(out, '"');
+       if (prefix) {
+               int off = 0;
+               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 (; *prefix; prefix++)
+                       if (*prefix == '/')
+                               strbuf_addstr(out, "../");
+       }
+
+       quote_c_style_counted (in, len, out, NULL, 1);
+
+       if (needquote)
+               strbuf_addch(out, '"');
+       if (!out->len)
+               strbuf_addstr(out, "./");
+
+       return out->buf;
+}
+
 /*
  * C-style name unquoting.
  *
@@ -272,7 +363,7 @@ int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp)
                switch (*quoted++) {
                  case '"':
                        if (endp)
-                               *endp = quoted + 1;
+                               *endp = quoted;
                        return 0;
                  case '\\':
                        break;