Solved IFS issues

git-svn-id: http://projects.archlinux.org/svn/initramfs/mkinitcpio@139 880c04e9-e011-0410-abf7-b926e227c9cd

3 files changed, 64 insertions, 0 deletions

diff --git a/subs/Makefile b/subs/Makefile
new file mode 100644
index 0000000..e3ae446
--- /dev/null
+++ b/subs/Makefile
@@ -0,0 +1,11 @@
+CC = klcc
+CFLAGS = -Wall
+TARGET = subs
+
+all: $(TARGET)
+
+$(TARGET): $(TARGET).c
+	$(CC) $(CFLAGS) $(TARGET).c -o $(TARGET)
+
+clean:
+	rm -f $(TARGET)
diff --git a/subs/README b/subs/README
new file mode 100644
index 0000000..ca29eb2
--- /dev/null
+++ b/subs/README
@@ -0,0 +1,11 @@
+The subs tool has been created to solve the IFS ignorance of dash.
+Instead of doing
+
+OLDIFS=$IFS
+IFS=$char
+func $arglist
+IFS=$OLDIFS
+
+now do
+
+func $(subs -n $char $arglist)
diff --git a/subs/subs.c b/subs/subs.c
new file mode 100644
index 0000000..03f05c5
--- /dev/null
+++ b/subs/subs.c
@@ -0,0 +1,42 @@
+#include <strings.h>
+#include <stdio.h>
+#include <unistd.h>
+
+void usage(char *name)
+{
+  fprintf(stderr,"Usage:\n\t%s [-n <character>] [-w <character>] <string>\n",name);
+}
+
+int main(int argc, char *argv[])
+{
+  char *h,n=':',w=' ';
+  int c;
+
+  while((c=getopt(argc, argv, "n:w:"))!=-1)
+    switch(c)
+    {
+      case 'n':
+        n=optarg[0];
+        break;
+      case 'w':
+        w=optarg[0];
+        break;
+      default:
+        usage(argv[0]);
+        return 1;
+    }
+
+  if(optind>=argc)
+  {
+    usage(argv[0]);
+    return 1;
+  }
+
+  h=argv[optind];
+  while( (h=index(h, n)) !=NULL )
+    *h++=w;
+  
+  printf("%s",argv[optind]);
+
+  return 0;
+}