added pwd command for remote server

reset errno to zero before each loop  -- Damien.Stuart usi.net

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@853 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/doc/rrdtool.pod b/doc/rrdtool.pod
index 0f41607aa1040127a3ae8411f0aba16991fa548c..cd3c785244c065fb1db4202f1d4a039658061a65 100644 (file)
--- a/doc/rrdtool.pod
+++ b/doc/rrdtool.pod
@@ -260,7 +260,7 @@ accepts the same arguments as on the command line and some special
 commands like B<quit, cd, mkdir> and B<ls>. For detailed help on the
 server commands type:
 
-   rrdtool help cd|mkdir|ls|quit
+   rrdtool help cd|mkdir|pwd|ls|quit
 
 When a command is completed, RRDtool will print the string  'C<OK>',
 followed by timing information of the form B<u:>I<usertime>

diff --git a/src/rrd_tool.c b/src/rrd_tool.c
index 5d49042a89aee1c8fe1b44d20c95ebbab3b41286..e91464dfddfc3876a8be3fe7de8f1566b9214d29 100644 (file)
--- a/src/rrd_tool.c
+++ b/src/rrd_tool.c
@@ -31,7 +31,7 @@ void PrintUsage(char *cmd)
           "\t\tlast, first, info, fetch, tune, resize, xport\n\n";
 
     char help_listremote[] =
-           "Valid remote commands: quit, ls, cd, mkdir\n\n";
+           "Valid remote commands: quit, ls, cd, mkdir, pwd\n\n";
 
 
     char help_create[] =
@@ -179,6 +179,10 @@ void PrintUsage(char *cmd)
           " * mkdir - creates a new directory\n\n"
           "\trrdtool mkdir newdirectoryname\n\n";
 
+    char help_pwd[] =
+          " * pwd - returns the current working directory\n\n"
+          "\trrdtool pwd\n\n";
+
     char help_lic[] =
           "RRDtool is distributed under the Terms of the GNU General\n"
           "Public License Version 2. (www.gnu.org/copyleft/gpl.html)\n\n"
@@ -187,7 +191,7 @@ void PrintUsage(char *cmd)
 
     enum { C_NONE, C_CREATE, C_DUMP, C_INFO, C_RESTORE, C_LAST, C_FIRST,
           C_UPDATE, C_FETCH, C_GRAPH, C_TUNE, C_RESIZE, C_XPORT,
-           C_QUIT, C_LS, C_CD, C_MKDIR, C_UPDATEV };
+           C_QUIT, C_LS, C_CD, C_MKDIR, C_PWD, C_UPDATEV };
 
     int help_cmd = C_NONE;
 
@@ -227,6 +231,8 @@ void PrintUsage(char *cmd)
                 help_cmd = C_CD;
             else if (!strcmp(cmd,"mkdir"))
                 help_cmd = C_MKDIR;
+            else if (!strcmp(cmd,"pwd"))
+                help_cmd = C_PWD;
        }
     fputs(help_main, stdout);
     switch (help_cmd)
@@ -291,6 +297,9 @@ void PrintUsage(char *cmd)
            case C_MKDIR:
                fputs(help_mkdir, stdout);
                break;
+           case C_PWD:
+               fputs(help_pwd, stdout);
+               break;
        }
     fputs(help_lic, stdout);
 }
@@ -450,6 +459,11 @@ int HandleInputLine(int argc, char **argv, FILE* out)
 #if defined(HAVE_SYS_STAT_H)
     struct stat   st;
 #endif
+    char* cwd; /* To hold current working dir on call to pwd */
+
+    /* Reset errno to 0 before we start.
+    */
+    errno = 0;
 
     if (RemoteMode){
        if (argc>1 && strcmp("quit", argv[1]) == 0){
@@ -479,6 +493,20 @@ int HandleInputLine(int argc, char **argv, FILE* out)
           }
           return(0);
        }
+       if (argc>1 && strcmp("pwd", argv[1]) == 0){
+          if (argc>2){
+             printf("ERROR: invalid parameter count for pwd\n");
+             return(1);
+          }
+          cwd = getcwd(NULL, MAXPATH);
+          if(cwd == NULL) {
+             printf("ERROR: %s\n",rrd_strerror(errno));
+             return(1);
+          }
+          printf("%s\n", cwd);
+          free(cwd);
+          return(0);
+       }
        if (argc>1 && strcmp("mkdir", argv[1]) == 0){
           if (argc>3){
              printf("ERROR: invalid parameter count for mkdir\n");