quote: implement "sq_dequote_many" to unwrap many args in one string

diff --git a/quote.c b/quote.c
index 6a520855d6c418ecb1384ef9571b122b134af1af..ea49c7a99fb1fc28f786d53f528addf4dcbf5a02 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -72,7 +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;
@@ -92,6 +92,8 @@ char *sq_dequote(char *arg)
                switch (*++src) {
                case '\0':
                        *dst = 0;
+                       if (next)
+                               *next = NULL;
                        return arg;
                case '\\':
                        c = *++src;
@@ -101,11 +103,23 @@ 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);
+}
+
 /* 1 means: quote as octal
  * 0 means: quote as octal if (quote_path_fully)
  * -1 means: never quote