system_cmds-735.tar.gz

[apple/system_cmds.git] / gcore.tproj / utils.c

diff --git a/gcore.tproj/utils.c b/gcore.tproj/utils.c
new file mode 100644 (file)
index 0000000..2c90967
--- /dev/null
+++ b/gcore.tproj/utils.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2015 Apple Inc.  All rights reserved.
+ */
+
+#include "options.h"
+#include "utils.h"
+#include "region.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <libutil.h>
+
+void
+err_mach(kern_return_t kr, const struct region *r, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    if (0 != kr)
+        printf("%s: ", pgm);
+    if (NULL != r)
+        printf("%llx-%llx ", R_ADDR(r), R_ENDADDR(r));
+    vprintf(fmt, ap);
+    va_end(ap);
+
+    if (0 != kr) {
+        printf(": %s (%x)", mach_error_string(kr), kr);
+        switch (err_get_system(kr)) {
+            case err_get_system(err_mach_ipc):
+                /* 0x10000000  == (4 << 26) */
+                printf(" => fatal\n");
+                exit(127);
+            default:
+                putchar('\n');
+                break;
+        }
+    } else
+        putchar('\n');
+}
+
+void
+printr(const struct region *r, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    if (NULL != r)
+        printf("%llx-%llx ", R_ADDR(r), R_ENDADDR(r));
+    vfprintf(stdout, fmt, ap);
+    va_end(ap);
+}
+
+/*
+ * Print power-of-1024 sizes in human-readable form
+ */
+const char *
+str_hsize(hsize_str_t hstr, uint64_t size)
+{
+    humanize_number(hstr, sizeof (hsize_str_t) - 1, size, "",
+                    HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL | HN_IEC_PREFIXES);
+    return hstr;
+}
+
+/*
+ * Put two strings together separated by a '+' sign
+ * If the string gets too long, then add an elipsis and
+ * stop concatenating it.
+ */
+char *
+strconcat(const char *s0, const char *s1, size_t maxlen)
+{
+    const char ellipsis[] = "...";
+    const char junction[] = ", ";
+    const size_t s0len = strlen(s0);
+    size_t nmlen = s0len + strlen(s1) + strlen(junction) + 1;
+    if (maxlen > strlen(ellipsis) && nmlen > maxlen) {
+        if (strcmp(s0 + s0len - strlen(ellipsis), ellipsis) == 0)
+            return strdup(s0);
+        s1 = ellipsis;
+        nmlen = s0len + strlen(s1) + strlen(junction) + 1;
+    }
+    char *p = malloc(nmlen);
+    if (p) {
+        strlcpy(p, s0, nmlen);
+        strlcat(p, junction, nmlen);
+        strlcat(p, s1, nmlen);
+    }
+    return p;
+}