[RFC PATCH 1/2] actions.c: make spawn() parse the arguments when raw is 1

Currently when raw argument is set, spawn fails if cmd contains
arguments.  This patch parses the arguments but doesn't handle escaped
spaces and quoted strings.
---
 src/actions.c |   36 ++++++++++++++++++++++++++++++++++--
 1 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/actions.c b/src/actions.c
index ab5162e..12eddd3 100644
--- a/src/actions.c
+++ b/src/actions.c
@@ -2574,11 +2574,39 @@ cmd_execf (int interactive, struct cmdarg **args)
   return cmdret_new (RET_SUCCESS, NULL);
 }
 
+#define MAXARGCNT	16
+#define MAXARGLEN	64
+
+static char args_cache[MAXARGCNT][MAXARGLEN];
+static char *args_result[MAXARGCNT + 1];
+
+static char **
+mkexecargs(char *str)
+{
+  int i;
+  for (i = 0; i < MAXARGCNT - 1; i++)
+    {
+      char *to = args_cache[i];
+      char *end = args_cache[i] + MAXARGLEN - 1;
+      while (isspace (*str))
+	str++;
+      if (!*str)
+	break;
+      while (*str && to < end && !isspace (*str))
+	*to++ = *str++;
+      *to = '\0';
+      args_result[i] = args_cache[i];
+    }
+  args_result[i] = NULL;
+  return args_result;
+}
+
 int
 spawn(char *cmd, int raw, rp_frame *frame)
 {
   rp_child_info *child;
   int pid;
+  char **execargs;
 
   pid = fork();
   if (pid == 0)
@@ -2596,8 +2624,12 @@ spawn(char *cmd, int raw, rp_frame *frame)
 #endif
       /* raw means don't run it through sh.  */
       if (raw)
-        execl (cmd, cmd, NULL);
-      execl("/bin/sh", "sh", "-c", cmd, NULL);
+	{
+	  execargs = mkexecargs (cmd);
+	  execvp (execargs[0], execargs);
+	}
+      else
+	execl ("/bin/sh", "sh", "-c", cmd, NULL);
       _exit(EXIT_FAILURE);
     }
 
-- 
1.6.0.2.GIT