From 87aef2480ed3c6ca587815ea36e7dd380301c97c Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Sun, 14 Jul 2013 22:12:22 -0500
Subject: New stuff added to lib.c needs review too, so make a lib/pending.c
 and move several functions to it.

---
 lib/pending.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 lib/pending.c

(limited to 'lib/pending.c')

diff --git a/lib/pending.c b/lib/pending.c
new file mode 100644
index 00000000..fad1c656
--- /dev/null
+++ b/lib/pending.c
@@ -0,0 +1,104 @@
+/* pending.c - reusable stuff awaiting review
+ *
+ * new lib entries for stuff in toys/pending
+ */
+
+#include "toys.h"
+
+// Execute a callback for each PID that matches a process name from a list.
+void for_each_pid_with_name_in(char **names, int (*callback)(pid_t pid, char *name))
+{
+  DIR *dp;
+  struct dirent *entry;
+  char cmd[sizeof(toybuf)], path[64];
+  char **curname;
+
+  if (!(dp = opendir("/proc"))) perror_exit("opendir");
+
+  while ((entry = readdir(dp))) {
+    int fd, n;
+
+    if (!isdigit(*entry->d_name)) continue;
+
+    if (sizeof(path) <= snprintf(path, sizeof(path), "/proc/%s/cmdline",
+      entry->d_name)) continue;
+
+    if (-1 == (fd=open(path, O_RDONLY))) continue;
+    n = read(fd, cmd, sizeof(cmd));
+    close(fd);
+    if (n<1) continue;
+
+    for (curname = names; *curname; curname++)
+      if (!strcmp(basename(cmd), *curname)) 
+          if (!callback(atol(entry->d_name), *curname)) goto done;
+  }
+done:
+  closedir(dp);
+}
+
+char* make_human_readable(unsigned long long size, unsigned long unit)
+{
+  unsigned int frac = 0;
+  if(unit) {
+    size = (size/(unit)) + (size%(unit)?1:0);
+    return xmsprintf("%llu", size);
+  }
+  else {
+    static char units[] = {'\0', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'};
+    int index = 0;
+    while(size >= 1024) {
+      frac = size%1024;
+      size /= 1024;
+      index++;
+    }
+    frac = (frac/102) + ((frac%102)?1:0);
+    if(frac >= 10) {
+      size += 1;
+      frac = 0;
+    }
+    if(frac) return xmsprintf("%llu.%u%c", size, frac, units[index]);
+    else return xmsprintf("%llu%c", size, units[index]);
+  }
+  return NULL; //not reached
+}
+
+/*
+ * used to get the interger value.
+ */
+unsigned long get_int_value(const char *numstr, unsigned lowrange, unsigned highrange)
+{
+  unsigned long rvalue = 0;
+  char *ptr;
+  if(*numstr == '-' || *numstr == '+' || isspace(*numstr)) perror_exit("invalid number '%s'", numstr);
+  errno = 0;
+  rvalue = strtoul(numstr, &ptr, 10);
+  if(errno || numstr == ptr) perror_exit("invalid number '%s'", numstr);
+   if(*ptr) perror_exit("invalid number '%s'", numstr);
+   if(rvalue >= lowrange && rvalue <= highrange) return rvalue;
+   else {
+         perror_exit("invalid number '%s'", numstr);
+         return rvalue; //Not reachable; to avoid waring message.
+   }
+}
+
+/*
+ * strcat to mallocated buffer
+ * reallocate if need be
+ */
+char *astrcat (char *x, char *y) {
+  char *z;
+  z = x;
+  x = realloc (x, (x ? strlen (x) : 0) + strlen (y) + 1);
+  if (!x) return 0;
+  (z ? strcat : strcpy) (x, y);
+  return x;
+}
+
+/*
+ * astrcat, but die on failure
+ */
+char *xastrcat (char *x, char *y) {
+  x = astrcat (x, y);
+  if (!x) error_exit ("xastrcat");
+  return x;
+}
-- 
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