Add scripts

scripts/health/utils.c

@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <math.h>
+
+#include "utils.h"
+
+
+void indent(int i)
+{
+    for (; i > 0; i--) printf("    ");
+}
+
+
+// Prints to the provided buffer a nice number of bytes (KB, MB, GB, etc)
+// Returns bytes written
+int pretty_bytes(char* buf, long long bytes)
+{
+    const char* suffixes[7];
+    suffixes[0] = "B";
+    suffixes[1] = "KB";
+    suffixes[2] = "MB";
+    suffixes[3] = "GB";
+    suffixes[4] = "TB";
+    suffixes[5] = "PB";
+    suffixes[6] = "EB";
+    uint s = 0; // which suffix to use
+    double count = bytes;
+    while (count >= 1024 && s < 7)
+    {
+        s++;
+        count /= 1024;
+    }
+    if (count - floor(count) == 0.0)
+        return sprintf(buf, "%d %s", (int)count, suffixes[s]);
+    else
+        return sprintf(buf, "%.1f %s", count, suffixes[s]);
+}
+
+long long pretty_bytes_to_num(char* buf)
+{
+    // First letter of suffix in order
+    const char suffixes[7] = {'B', 'K', 'M', 'G', 'T', 'P', 'E'};
+    char suffix;
+    float fnum;
+    long long num = 1;
+    int n;
+
+    errno = 0;
+    n = sscanf(buf,"%f%c", &fnum, &suffix);
+    if (n == 2) {
+        //TODO error handling
+    } else if (errno != 0) {
+        perror("scanf");
+    } else {
+        fprintf(stderr, "No matching characters\n");
+    }
+
+    for (int s=0;s<sizeof(suffixes); s++){
+        if (suffix == suffixes[s]) break;
+        num *= 1024;
+    }
+
+    return (long long )(num*fnum);
+}
+
+size_t utf8len(const char *s)
+{
+    size_t len = 0;
+    for (; *s; ++s) if ((*s & 0xC0) != 0x80) ++len;
+    return len;
+}
+
+void debug(const char *format, ...){
+#ifdef DEBUG
+    va_list args;
+    va_start(args, format);
+    vprintf(format, args);
+    va_end(args);
+#endif
+}
+
+void indent_debug(int i){
+#ifdef DEBUG
+    indent(i);
+#endif
+}