Added support functions BuildCmdLine and my_system to utilities

[fw/sdcc] / support / Util / MySystem.c

diff --git a/support/Util/MySystem.c b/support/Util/MySystem.c
new file mode 100644 (file)
index 0000000..bae66ca
--- /dev/null
+++ b/support/Util/MySystem.c
@@ -0,0 +1,88 @@
+/*-------------------------------------------------------------------------
+  MySystem - SDCC Support function
+
+             Written By -  Sandeep Dutta . sandeep.dutta@usa.net (1999)
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   In other words, you are welcome to use, share and improve this program.
+   You are forbidden to forbid anyone else to use, share and improve
+   what you give them.   Help stamp out software-hoarding!
+-------------------------------------------------------------------------*/
+
+#include "common.h"
+#include "newalloc.h"
+#include <io.h>
+
+#define X_OK 1
+
+/*!
+Call an external program with arguements
+*/
+
+//char *ExePathList[]= {SRCDIR "/bin",PREFIX "/bin", NULL};
+char *ExePathList[] = {NULL, NULL};                    /* First entry may be overwritten, so use two. */
+
+int
+my_system (const char *cmd)
+{
+  int argsStart, e, i = 0;
+  char *cmdLine = NULL;
+
+  argsStart = strstr (cmd, " ") - cmd;
+
+  // try to find the command in predefined path's
+  while (ExePathList[i])
+    {
+      cmdLine = (char *) Safe_malloc (strlen (ExePathList[i]) + strlen (cmd) + 10);
+      strcpy (cmdLine, ExePathList[i]);        // the path
+
+      strcat (cmdLine, DIR_SEPARATOR_STRING);
+      strncat (cmdLine, cmd, argsStart);       // the command
+
+#if NATIVE_WIN32
+      strcat (cmdLine, ".exe");
+#endif
+
+      if (access (cmdLine, X_OK) == 0)
+       {
+         // the arguments
+         strcat (cmdLine, cmd + argsStart);
+         break;
+       }
+      free (cmdLine);
+      cmdLine = NULL;
+      i++;
+    }
+
+  if (verboseExec)
+    {
+      printf ("+ %s\n", cmdLine ? cmdLine : cmd);
+    }
+
+  if (cmdLine)
+    {
+      // command found in predefined path
+      e = system (cmdLine);
+      free (cmdLine);
+    }
+  else
+    {
+      // trust on $PATH
+      e = system (cmd);
+    }
+  return e;
+}
+