From 7971cc02be59a7d9115a8e436474433807588c6c Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 14 Sep 2022 15:54:37 -0400
Subject: Initial commit

---
 mstat_export.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 mstat_export.c

(limited to 'mstat_export.c')

diff --git a/mstat_export.c b/mstat_export.c
new file mode 100644
index 0000000..2c51e13
--- /dev/null
+++ b/mstat_export.c
@@ -0,0 +1,67 @@
+#include "common.h"
+
+int main(int argc, char *argv[]) {
+    FILE *fp;
+    struct mstat_record_t p;
+    char **fields;
+    size_t fields_total;
+
+    if (argc < 2) {
+        fprintf(stderr, "Missing path to *.mstat data file\n");
+        exit(1);
+    }
+
+    if (access(argv[1], F_OK)) {
+        perror(argv[1]);
+        exit(1);
+    }
+
+    fp = mstat_open(argv[1]);
+    if (!fp) {
+        perror(argv[1]);
+        exit(1);
+    }
+
+    fields = mstat_read_fields(fp);
+    if (!fields) {
+        fprintf(stderr, "Unable to obtain field names from %s\n", argv[1]);
+        exit(1);
+    }
+
+    fields_total = mstat_get_field_count(fp);
+    for (size_t i = 0; i < fields_total; i++) {
+        printf("%s", fields[i]);
+        if (i < fields_total - 1) {
+            printf(",");
+        }
+    }
+    puts("");
+
+    if (mstat_rewind(fp) < 0) {
+        perror("Unable to rewind");
+        exit(1);
+    }
+
+    while (!mstat_iter(fp, &p)) {
+        char buf[1024] = {0};
+        for (size_t i = 0; i < fields_total; i++) {
+            struct mstat_record_t *pptr = &p;
+            union mstat_field_t result;
+            result = mstat_get_field_by_name(pptr, fields[i]);
+
+            if (!strcmp(fields[i], "timestamp")) {
+                snprintf(buf, sizeof(buf) - 1, "%lf", result.d64);
+            } else {
+                snprintf(buf, sizeof(buf) - 1, "%zu", result.u64);
+            }
+            if (i < fields_total - 1) {
+                strcat(buf, ",");
+            }
+            printf("%s", buf);
+        }
+        puts("");
+    }
+
+    fclose(fp);
+    return 0;
+}
\ No newline at end of file
-- 
cgit