prt-get: if set, use $PAGER for 'cat' and 'readme'

git-svn-id: https://crux.nu/svn/tools/prt-get/trunk@1142 0b5ae1c7-2405-0410-a7fc-ba219f786e1e

ChangeLog

@@ -7,6 +7,7 @@
 - allow to remove log files of successful builds
 - print update summary right before running the addcommand
 - print full add command and PACKAGE_DIR info when using install/update -v
+- Make 'cat' and 'readme' use $PAGER if set
 
 * 0.5.11	29.05.2005  Johannes Winkelmann
 - add --path to 'ls'

doc/prt-get.8

@@ -190,7 +190,7 @@ Print the path of a port
 
 .TP 
 .B readme <port>
-Print the port's README file if it exists
+Print the port's README file if it exists; if set, uses $PAGER
 
 .TP 
 .B depends <package1> [<package2> ...]
@@ -339,7 +339,7 @@ Prints out a listing of the port's directory
 
 .TP
 .B cat <package> [<file>]
-Prints out the file to stdout. If <file> is not specified, 'Pkgfile' is used
+Prints out the file to stdout. If <file> is not specified, 'Pkgfile' is used. If set, uses $PAGER
 
 .TP
 .B edit <package> <file>

src/prtget.cpp

@@ -1212,6 +1212,25 @@ void PrtGet::readme()
     const Package* p = m_repo->getPackage( arg );
     if ( p ) {
         string file = p->path() + "/" + p->name() + "/README";
+        printFile(file);
+    } else {
+        cerr << "Package '" << arg << "' not found" << endl;
+        m_returnValue = PG_GENERAL_ERROR;
+        return;
+    }
+}
+
+bool PrtGet::printFile(const string& file)
+{
+    if (!File::fileExists(file)) {
+        return false;
+    }
+    
+    char* pager = getenv("PAGER");
+    if (pager) {
+        Process proc(pager, file);
+        proc.executeShell();
+    } else {    
         FILE* fp = fopen( file.c_str(), "r" );
         char buf[255];
         if ( fp ) {
@@ -1220,14 +1239,10 @@ void PrtGet::readme()
             }
             fclose( fp );
         }
-
-    } else {
-        cerr << "Package '" << arg << "' not found" << endl;
-        m_returnValue = PG_GENERAL_ERROR;
-        return;
     }
-}
     
+    return true;
+}
 
 void PrtGet::printDependendent()
 {
@@ -1623,19 +1638,11 @@ void PrtGet::cat()
             fileName = *it;
         }
         string file = p->path() + "/" + p->name() + "/" + fileName;
-        FILE* fp = fopen( file.c_str(), "r" );
-        char buf[255];
-        if ( fp ) {
-            while ( fgets( buf, 255, fp ) ) {
-                cout << buf;
-            }
-            fclose( fp );
-        } else {
+        if (!printFile(file)) {
             cerr << "File '" << *it << "' not found" << endl;
             m_returnValue = PG_GENERAL_ERROR;
             return;
         }
-
     } else {
         cerr << "Package '" << arg << "' not found" << endl;
         m_returnValue = PG_GENERAL_ERROR;

src/prtget.h

@@ -143,6 +143,7 @@ protected:
     void assertExactArgCount(int count);
     void argCountFailure(int count, const string& specifier);
     
+    static bool printFile(const string& file);
 };
 
 #endif /* _PRTGET_H_ */