In O[U]StringBuffer, make string_view params replacements for OUString ones

...for LIBO_INTERNAL_ONLY, instead of having them as additional overloads.  That
way, loplugin:bufferadd and loplugin:stringviewparam found many further
opportunities for simplification (all addressed here).  Some notes:

* There is no longer an implicit conversion from O[U]String to O[U]StringBuffer
(as that goes via user-defined conversions through string_view now), which was
most noticeable in copy initializations like

  OStringBuffer buf = someStr;

that had to be changed to direct initialization,

  OStringBuffer buf(someStr);

But then again, it wasn't too many places that were affected and I think we can
live with that.

* I made the O[U]StringBuffer ctors taking string_view non-explicit, mainly to
get them in line with their counterparts taking O[U]String.

* I added an OUStringBuffer::lastIndexOf string_view overload that was missing
(relative to OUStringBuffer::indexOf).

* loplugin:stringconstant needed some addition to keep the
compilerplugins/clang/test/stringconstant.cxx checks related to
OStringBuffer::append and OStringBuffer::insert working.

* loplugin:stringviewparam no longer needs the special O[U]StringBuffer-related
code that had been introduced in 1250aecd71fabde4dba990bfceb61bbe8e06b8ea
"loplugin:stringviewparam extend to new.."

Change-Id: Ib1bb8c4632d99b744e742605a9fef6eae959fd72
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122904
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

1 files changed, 7 insertions, 17 deletions

diff --git a/stoc/source/security/permissions.cxx b/stoc/source/security/permissions.cxx
index 86e523e5a9fe..987b07ed8997 100644
--- a/stoc/source/security/permissions.cxx
+++ b/stoc/source/security/permissions.cxx
@@ -311,17 +311,11 @@ FilePermission::FilePermission(
 
     if ( m_url == "*" )
     {
-        OUStringBuffer buf( 64 );
-        buf.append( getWorkingDir() );
-        buf.append( "/*" );
-        m_url = buf.makeStringAndClear();
+        m_url = getWorkingDir() + "/*";
     }
     else if ( m_url == "-" )
     {
-        OUStringBuffer buf( 64 );
-        buf.append( getWorkingDir() );
-        buf.append( "/-" );
-        m_url = buf.makeStringAndClear();
+        m_url = getWorkingDir() + "/-";
     }
     else if (!m_url.startsWith("file:///"))
     {
@@ -401,15 +395,11 @@ bool FilePermission::implies( Permission const & perm ) const
 
 OUString FilePermission::toString() const
 {
-    OUStringBuffer buf( 48 );
-    // url
-    buf.append( "com.sun.star.io.FilePermission (url=\"" );
-    buf.append( m_url );
-    // actions
-    buf.append( "\", actions=\"" );
-    buf.append( makeStrings( m_actions, s_actions ) );
-    buf.append( "\")" );
-    return buf.makeStringAndClear();
+    return
+        // url
+        "com.sun.star.io.FilePermission (url=\"" + m_url
+        // actions
+        + "\", actions=\"" + makeStrings( m_actions, s_actions ) + "\")";
 }
 
 namespace {