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-rw-r--r--butl/process.cxx38
1 files changed, 38 insertions, 0 deletions
diff --git a/butl/process.cxx b/butl/process.cxx
index e13a8cd..38948a1 100644
--- a/butl/process.cxx
+++ b/butl/process.cxx
@@ -37,6 +37,7 @@
#include <cassert>
#include <cstddef> // size_t
#include <cstring> // strlen(), strchr()
+#include <ostream>
#include <butl/utility> // casecmp()
#include <butl/fdstream> // fdnull(), fdclose()
@@ -120,6 +121,43 @@ namespace butl
return r;
}
+ void process::
+ print (ostream& o, const char* const args[], size_t n)
+ {
+ size_t m (0);
+ const char* const* p (args);
+ do
+ {
+ if (m != 0)
+ o << " |"; // Trailing space will be added inside the loop.
+
+ for (m++; *p != nullptr; p++, m++)
+ {
+ if (p != args)
+ o << ' ';
+
+ // Quote if empty or contains spaces.
+ //
+ bool q (**p == '\0' || strchr (*p, ' ') != nullptr);
+
+ if (q)
+ o << '"';
+
+ o << *p;
+
+ if (q)
+ o << '"';
+ }
+
+ if (m < n) // Can we examine the next element?
+ {
+ p++;
+ m++;
+ }
+
+ } while (*p != nullptr);
+ }
+
#ifndef _WIN32
static process_path