[libvirt] [PATCH v2 2/3] virsh: Implement new table API for virsh list

[Simon Kobyda]

Instead of printing it straight in virsh, it creates table struct
which is filled with header and rows(domains). It allows us to know
more about table before printing to calculate alignment right.

Signed-off-by: Simon Kobyda <skobyda at redhat.com>
---
 tests/virshtest.c            | 14 ++++++------
 tools/virsh-domain-monitor.c | 43 ++++++++++++++++++++----------------
 2 files changed, 31 insertions(+), 26 deletions(-)

diff --git a/tests/virshtest.c b/tests/virshtest.c
index 94548a82d1..10cd0d356b 100644
--- a/tests/virshtest.c
+++ b/tests/virshtest.c
@@ -98,9 +98,9 @@ static int testCompareListDefault(const void *data ATTRIBUTE_UNUSED)
 {
   const char *const argv[] = { VIRSH_DEFAULT, "list", NULL };
   const char *exp = "\
- Id    Name                           State\n\
-----------------------------------------------------\n\
- 1     test                           running\n\
+ Id   Name   State    \n\
+----------------------\n\
+ 1    test   running  \n\
 \n";
   return testCompareOutputLit(exp, NULL, argv);
 }
@@ -109,10 +109,10 @@ static int testCompareListCustom(const void *data ATTRIBUTE_UNUSED)
 {
   const char *const argv[] = { VIRSH_CUSTOM, "list", NULL };
   const char *exp = "\
- Id    Name                           State\n\
-----------------------------------------------------\n\
- 1     fv0                            running\n\
- 2     fc4                            running\n\
+ Id   Name   State    \n\
+----------------------\n\
+ 1    fv0    running  \n\
+ 2    fc4    running  \n\
 \n";
   return testCompareOutputLit(exp, NULL, argv);
 }
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
index b9b4f9739b..adc5bb1a7a 100644
--- a/tools/virsh-domain-monitor.c
+++ b/tools/virsh-domain-monitor.c
@@ -39,6 +39,7 @@
 #include "virmacaddr.h"
 #include "virxml.h"
 #include "virstring.h"
+#include "vsh-table.h"
 
 VIR_ENUM_DECL(virshDomainIOError)
 VIR_ENUM_IMPL(virshDomainIOError,
@@ -1901,6 +1902,7 @@ cmdList(vshControl *ctl, const vshCmd *cmd)
     char id_buf[INT_BUFSIZE_BOUND(unsigned int)];
     unsigned int id;
     unsigned int flags = VIR_CONNECT_LIST_DOMAINS_ACTIVE;
+    vshTablePtr table = NULL;
 
     /* construct filter flags */
     if (vshCommandOptBool(cmd, "inactive") ||
@@ -1940,15 +1942,12 @@ cmdList(vshControl *ctl, const vshCmd *cmd)
     /* print table header in legacy mode */
     if (optTable) {
         if (optTitle)
-            vshPrintExtra(ctl, " %-5s %-30s %-10s %-20s\n%s\n",
-                          _("Id"), _("Name"), _("State"), _("Title"),
-                          "-----------------------------------------"
-                          "-----------------------------------------");
+            table = vshTableNew("Id", "Name", "State", "Title", NULL);
         else
-            vshPrintExtra(ctl, " %-5s %-30s %s\n%s\n",
-                          _("Id"), _("Name"), _("State"),
-                          "-----------------------------------------"
-                          "-----------");
+            table = vshTableNew("Id", "Name", "State", NULL);
+
+        if (!table)
+            goto cleanup;
     }
 
     for (i = 0; i < list->ndomains; i++) {
@@ -1973,20 +1972,22 @@ cmdList(vshControl *ctl, const vshCmd *cmd)
             if (optTitle) {
                 if (!(title = virshGetDomainDescription(ctl, dom, true, 0)))
                     goto cleanup;
-
-                vshPrint(ctl, " %-5s %-30s %-10s %-20s\n", id_buf,
-                         virDomainGetName(dom),
-                         state == -2 ? _("saved")
-                         : virshDomainStateToString(state),
-                         title);
-
+                if (vshTableRowAppend(table, id_buf,
+                                      virDomainGetName(dom),
+                                      state == -2 ? _("saved")
+                                      : virshDomainStateToString(state),
+                                      title, NULL) < 0)
+                    goto cleanup;
                 VIR_FREE(title);
             } else {
-                vshPrint(ctl, " %-5s %-30s %s\n", id_buf,
-                         virDomainGetName(dom),
-                         state == -2 ? _("saved")
-                         : virshDomainStateToString(state));
+                if (vshTableRowAppend(table, id_buf,
+                                      virDomainGetName(dom),
+                                      state == -2 ? _("saved")
+                                      : virshDomainStateToString(state),
+                                      NULL) < 0)
+                    goto cleanup;
             }
+
         } else if (optUUID && optName) {
             if (virDomainGetUUIDString(dom, uuid) < 0) {
                 vshError(ctl, "%s", _("Failed to get domain's UUID"));
@@ -2004,8 +2005,12 @@ cmdList(vshControl *ctl, const vshCmd *cmd)
         }
     }
 
+    if (optTable)
+        vshTablePrintToStdout(table, ctl);
+
     ret = true;
  cleanup:
+    vshTableFree(table);
     virshDomainListFree(list);
     return ret;
 }
-- 
2.17.1