1 files changed, 122 insertions, 0 deletions
diff --git a/tools/libxc/xtl_logger_stdio.c b/tools/libxc/xtl_logger_stdio.c
new file mode 100644
index 0000000000..587c67da6a
--- /dev/null
+++ b/tools/libxc/xtl_logger_stdio.c
@@ -0,0 +1,122 @@
+/*
+ * xtl_logger_stdio.c
+ *
+ * log message consumer that writes to stdio
+ *
+ * Copyright (c) 2010 Citrix
+ * Part of a generic logging interface used by various dom0 userland libraries.
+ */
+
+#include "xentoollog.h"
+
+#include <time.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+struct xentoollog_logger_stdiostream {
+    xentoollog_logger vtable;
+    FILE *f;
+    xentoollog_level min_level;
+    unsigned flags;
+    int progress_erase_len, progress_last_percent;
+};
+
+static void progress_erase(xentoollog_logger_stdiostream *lg) {
+    if (lg->progress_erase_len)
+        fprintf(lg->f, "\r%*s\r", lg->progress_erase_len, "");
+}
+
+static void stdiostream_vmessage(xentoollog_logger *logger_in,
+                                 xentoollog_level level,
+                                 int errnoval,
+                                 const char *context,
+                                 const char *format,
+                                 va_list al) {
+    xentoollog_logger_stdiostream *lg = (void*)logger_in;
+
+    progress_erase(lg);
+
+    if (lg->flags & XTL_STDIOSTREAM_SHOW_DATE) {
+        struct tm lt_buf;
+        time_t now = time(0);
+        struct tm *lt= localtime_r(&now, &lt_buf);
+        fprintf(lg->f, "%04d-%02d-%02d %02d:%02d:%02d %s ",
+                lt->tm_year+1900, lt->tm_mon+1, lt->tm_mday,
+                lt->tm_hour, lt->tm_min, lt->tm_sec,
+                tzname[daylight ? !!lt->tm_isdst : 0]);
+    }
+    if (lg->flags & XTL_STDIOSTREAM_SHOW_PID)
+        fprintf(lg->f, "[%lu] ", (unsigned long)getpid());
+
+    if (context)
+        fprintf(lg->f, "%s: ", context);
+
+    fprintf(lg->f, "%s: ", xtl_level_to_string(level));
+
+    vfprintf(lg->f, format, al);
+
+    if (errnoval >= 0)
+        vfprintf(lg->f, ": %s", strerror(errnoval));
+
+    putc('\n', lg->f);
+    fflush(lg->f);
+}
+
+static void stdiostream_progress(struct xentoollog_logger *logger_in,
+                                 const char *context,
+                                 const char *doing_what, int percent,
+                                 unsigned long done, unsigned long total) {
+    xentoollog_logger_stdiostream *lg = (void*)logger_in;
+    int newpel, extra_erase;
+    xentoollog_level this_level;
+
+    if (percent < lg->progress_last_percent) {
+        this_level = XTL_PROGRESS;
+    } else if (percent == lg->progress_last_percent) {
+        return;
+    } else if (percent < lg->progress_last_percent + 5) {
+        this_level = XTL_DETAIL;
+    } else {
+        this_level = XTL_PROGRESS;
+    }
+
+    if (lg->min_level < this_level)
+        return;
+
+    if (lg->progress_erase_len)
+        putc('\r', lg->f);
+
+    newpel = fprintf(lg->f, "%s%s" "%s: %lu/%lu  %3d%%",
+                     context?context:"", context?": ":"",
+                     doing_what, done, total, percent);
+
+    extra_erase = lg->progress_erase_len - newpel;
+    if (extra_erase > 0)
+        fprintf(lg->f, "%*s\r", extra_erase, "");
+
+    lg->progress_erase_len = newpel;
+}
+
+static void stdiostream_destroy(struct xentoollog_logger *logger_in) {
+    xentoollog_logger_stdiostream *lg = (void*)logger_in;
+    progress_erase(lg);
+    free(lg);
+}
+
+
+xentoollog_logger_stdiostream *xtl_createlogger_stdiostream
+        (FILE *f, xentoollog_level min_level, unsigned flags) {
+    xentoollog_logger_stdiostream newlogger;
+
+    newlogger.f = f;
+    newlogger.min_level = min_level;
+    newlogger.flags = flags;
+
+    if (newlogger.flags & XTL_STDIOSTREAM_SHOW_DATE) tzset();
+
+    newlogger.progress_erase_len = 0;
+
+    return XTL_NEW_LOGGER(stdiostream, newlogger);
+}