cli: handle multiline revision strings

cli/mmcli-modem.c

@@ -129,6 +129,43 @@ mmcli_modem_shutdown (void)
     g_object_unref (ctxt.modem);
 }
 
+static gchar *
+prefix_newlines (const gchar *prefix,
+                 const gchar *str)
+{
+    GString *prefixed_string = NULL;
+    const gchar *line_start = str;
+    const gchar *line_end;
+
+    while ((line_end = strchr (line_start, '\n'))) {
+        gssize line_length;
+
+        line_length = line_end - line_start;
+        if (line_start[line_length - 1] == '\r')
+            line_length--;
+
+        if (line_length > 0) {
+            if (prefixed_string) {
+                /* If not the first line, add the prefix */
+                g_string_append_printf (prefixed_string,
+                                        "\n%s", prefix);
+            } else {
+                prefixed_string = g_string_new ("");
+            }
+
+            g_string_append_len (prefixed_string,
+                                 line_start,
+                                 line_length);
+        }
+
+        line_start = line_end + 1;
+    }
+
+    return (prefixed_string ?
+            g_string_free (prefixed_string, FALSE) :
+            NULL);
+}
+
 static void
 get_info_process_reply (gboolean      result,
                         const GError *error,
@@ -136,12 +173,17 @@ get_info_process_reply (gboolean      result,
                         const gchar  *model,
                         const gchar  *revision)
 {
+    gchar *prefixed_revision;
+
     if (!result) {
         g_printerr ("couldn't get info from modem: '%s'\n",
                     error ? error->message : "unknown error");
         exit (EXIT_FAILURE);
     }
 
+    prefixed_revision = prefix_newlines ("           |                 ",
+                                         revision);
+
     g_print ("\n"
              "%s\n"
              "  -------------------------\n"
@@ -152,7 +194,9 @@ get_info_process_reply (gboolean      result,
              ctxt.modem_str,
              manufacturer,
              model,
-             revision);
+             prefixed_revision ? prefixed_revision : revision);
+
+    g_free (prefixed_revision);
 }
 
 static void