Move some serial ports initialization to the core.

This moves the initialization of the ports used by qemud
and the "kmsg" component to the core.

+ Gets rid of the -old-system option used to suppot pre-1.4
  Android system. We don't officially support anything before 1.5
  anyway.

Change-Id: Ied7e284d952adfd3419d96c39a7c48761f1b3f5c

2 files changed, 40 insertions, 1 deletions

diff --git a/android/utils/stralloc.c b/android/utils/stralloc.c
index 2a924e4..ce5d800 100644
--- a/android/utils/stralloc.c
+++ b/android/utils/stralloc.c
@@ -19,7 +19,7 @@
 #include <limits.h>
 
 extern void
-stralloc_tabular( stralloc_t*  out, 
+stralloc_tabular( stralloc_t*  out,
                   const char** strings, int  count,
                   const char*  prefix,  int  width )
 {
@@ -138,6 +138,40 @@ stralloc_cstr( stralloc_t*  s )
     return s->s;
 }
 
+void
+stralloc_lstrip( stralloc_t*  s )
+{
+    int  count;
+
+    for (count = 0; count < s->n; count++) {
+        if (s->s[count] != ' ' && s->s[count] != '\t')
+            break;
+    }
+
+    if (count > 0) {
+        memmove(s->s, s->s + count, s->n - count);
+        s->n -= count;
+    }
+}
+
+void
+stralloc_rstrip( stralloc_t*  s )
+{
+    int  count = s->n;
+
+    while (count > 0 && (s->s[count-1] == ' ' || s->s[count-1] == '\t'))
+        count--;
+
+    s->n = count;
+}
+
+void
+stralloc_strip( stralloc_t* s )
+{
+    stralloc_rstrip(s);
+    stralloc_lstrip(s);
+}
+
 extern char*
 stralloc_to_tempstr( stralloc_t*  s )
 {
diff --git a/android/utils/stralloc.h b/android/utils/stralloc.h
index 4d17060..626a638 100644
--- a/android/utils/stralloc.h
+++ b/android/utils/stralloc.h
@@ -52,6 +52,11 @@ extern void   stralloc_add_quote_bytes( stralloc_t*  s, const void*  from, unsig
 extern void   stralloc_add_hex( stralloc_t*  s, unsigned  value, int  num_digits );
 extern void   stralloc_add_hexdump( stralloc_t*  s, void*  base, int  size, const char*  prefix );
 
+/* Remove leading, trailing or leading+trailing whitespace */
+extern void   stralloc_lstrip( stralloc_t*  s );
+extern void   stralloc_rstrip( stralloc_t*  s );
+extern void   stralloc_strip( stralloc_t*  s );
+
 extern void   stralloc_tabular( stralloc_t*  s, const char** strings, int  count,
                                                 const char*  prefix,  int  width );