Add --out-preserve to preserve contents of output path.

Useful for building a single set of documentation over multiple doc.pl runs.

doc/doc.pl

@@ -67,6 +67,7 @@ doc.pl [options]
    --key-var        Override defined variable and use in cache key
    --doc-path       Document path to render (manifest.xml should be located here)
    --out            Output types (html, pdf, markdown)
+   --out-preserve   Don't clean output directory
    --require        Require only certain sections of the document (to speed testing)
    --include        Include source in generation (links will reference website)
    --exclude        Exclude source from generation (links will reference website)
@@ -90,6 +91,7 @@ my $rhVariableOverride = {};
 my $rhKeyVariableOverride = {};
 my $strDocPath;
 my @stryOutput;
+my $bOutPreserve = false;
 my @stryRequire;
 my @stryInclude;
 my @stryExclude;
@@ -103,6 +105,7 @@ GetOptions ('help' => \$bHelp,
             'quiet' => \$bQuiet,
             'log-level=s' => \$strLogLevel,
             'out=s@' => \@stryOutput,
+            'out-preserve' => \$bOutPreserve,
             'require=s@' => \@stryRequire,
             'include=s@' => \@stryInclude,
             'exclude=s@' => \@stryExclude,
@@ -278,6 +281,24 @@ eval
 
         &log(INFO, "render ${strOutput} output");
 
+        # Clean contents of out directory
+        if (!$bOutPreserve)
+        {
+            my $strOutputPath = $strOutput eq 'pdf' ? "${strOutputPath}/latex" : "${strOutputPath}/$strOutput";
+
+            # Clean the current out path if it exists
+            if (-e $strOutputPath)
+            {
+                executeTest("rm -rf ${strOutputPath}/*");
+            }
+            # Else create the html path
+            else
+            {
+                mkdir($strOutputPath)
+                    or confess &log(ERROR, "unable to create path ${strOutputPath}");
+            }
+        }
+
         if ($strOutput eq 'markdown')
         {
             my $oMarkdown =

doc/lib/BackRestDoc/Html/DocHtmlSite.pm

@@ -63,18 +63,6 @@ sub new
             {name => 'bExe'}
         );
 
-    # Remove the current html path if it exists
-    if (-e $self->{strHtmlPath})
-    {
-        executeTest("rm -rf $self->{strHtmlPath}/*");
-    }
-    # Else create the html path
-    else
-    {
-        mkdir($self->{strHtmlPath})
-            or confess &log(ERROR, "unable to create path $self->{strHtmlPath}");
-    }
-
     # Return from function and log return values if any
     return logDebugReturn
     (

doc/lib/BackRestDoc/Latex/DocLatex.pm

@@ -60,18 +60,6 @@ sub new
             {name => 'bExe'}
         );
 
-    # Remove the current html path if it exists
-    if (-e $self->{strLatexPath})
-    {
-        executeTest("rm -rf $self->{strLatexPath}/*");
-    }
-    # Else create the html path
-    else
-    {
-        mkdir($self->{strLatexPath})
-            or confess &log(ERROR, "unable to create path $self->{strLatexPath}");
-    }
-
     # Return from function and log return values if any
     return logDebugReturn
     (

doc/lib/BackRestDoc/Markdown/DocMarkdown.pm

@@ -55,18 +55,6 @@ sub new
             {name => 'bExe'}
         );
 
-    # Remove the current html path if it exists
-    if (-e $self->{strMarkdownPath})
-    {
-        executeTest("rm -rf $self->{strMarkdownPath}/*");
-    }
-    # Else create the html path
-    else
-    {
-        mkdir($self->{strMarkdownPath})
-            or confess &log(ERROR, "unable to create path $self->{strMarkdownPath}");
-    }
-
     # Return from function and log return values if any
     return logDebugReturn
     (

doc/xml/release.xml

@@ -199,6 +199,10 @@
                     <release-item>
                         <p>Automate coverage summary report generation.</p>
                     </release-item>
+
+                    <release-item>
+                        <p>Add <setting>--out-preserve</setting> to preserve contents of output path.</p>
+                    </release-item>
                 </release-development-list>
             </release-doc-list>