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/*
* util.c
*
* Misc utility functions
*
* Copyright (C) 2006, 2007 Olaf Kirch <olaf.kirch@oracle.com>
*/
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <errno.h>
#include "util.h"
unsigned long
parse_size(const char *arg)
{
unsigned long mult = 1, ret;
char *s;
ret = strtol(arg, &s, 0);
switch (*s++) {
case 'g':
case 'G':
mult = 1024 * 1024 * 1024;
break;
case 'm':
case 'M':
mult = 1024 * 1024;
break;
case 'k':
case 'K':
mult = 1024;
break;
case '\0':
return ret;
default:
bad:
err(1, "parse_size: unknown unit in \"%s\"\n", arg);
}
if (*s != '\0')
goto bad;
return mult * ret;
}
char *
print_size(unsigned long size)
{
static char unit[] = "-kMG";
static char buffer[64];
unsigned int power = 0;
while (size && !(size % 1024) && power < sizeof(unit)) {
size /= 1024;
power++;
}
if (!power) {
snprintf(buffer, sizeof(buffer), "%lu", size);
} else {
snprintf(buffer, sizeof(buffer), "%lu%c",
size, unit[power]);
}
return buffer;
}
unsigned int
parse_count(const char *arg)
{
unsigned long ret;
char *s;
ret = strtoul(arg, &s, 0);
if (*s != '\0')
err(1, "parse_count: unexpected character in \"%s\"\n", arg);
return ret;
}
int
parse_int(const char *arg)
{
long ret;
char *s;
ret = strtol(arg, &s, 0);
if (*s != '\0')
err(1, "parse_count: unexpected character in \"%s\"\n", arg);
return ret;
}
long long
parse_longlong(const char *arg)
{
long long ret;
char *s;
ret = strtoll(arg, &s, 0);
if (*s != '\0')
err(1, "parse_count: unexpected character in \"%s\"\n", arg);
return ret;
}
double
parse_double(const char *arg)
{
double ret;
char *s;
ret = strtod(arg, &s);
if (*s != '\0')
err(1, "parse_count: unexpected character in \"%s\"\n", arg);
return ret;
}
unsigned int
parse_timeout(const char *arg)
{
unsigned int v, ret = 0;
char *s;
do {
v = strtoul(arg, &s, 10);
switch (*s) {
case '\0':
ret += v;
break;
case 'd':
v *= 24;
case 'h':
v *= 60;
case 'm':
v *= 60;
case 's':
ret += v;
++s;
break;
default:
errx(1, "parse_timeout: unexpected character in \"%s\"\n",
arg);
}
arg = s;
} while (*arg);
return ret;
}
void
isns_string_array_append(struct string_array *array, const char *val)
{
if (!(array->count % 32)) {
array->list = isns_realloc(array->list,
(array->count + 32) * sizeof(val));
}
array->list[array->count++] = val? isns_strdup(val) : NULL;
}
void
isns_string_array_destroy(struct string_array *array)
{
unsigned int i;
for (i = 0; i < array->count; ++i)
isns_free(array->list[i]);
isns_free(array->list);
memset(array, 0, sizeof(*array));
}
void
isns_assign_string(char **var, const char *val)
{
char *s = NULL;
if (val && !(s = isns_strdup(val)))
errx(1, "out of memory");
if (*var)
isns_free(*var);
*var = s;
}
/*
* Recursively create a directory
*/
int
isns_mkdir_recursive(const char *pathname)
{
const char *orig_pathname = pathname;
char *squirrel[64];
char *copy = NULL, *s;
int ns = 0;
if (!pathname || !strcmp(pathname, "."))
return 0;
while (1) {
if (mkdir(pathname, 0755) >= 0) {
if (ns == 0)
break;
*squirrel[--ns] = '/';
continue;
}
if (errno == EEXIST)
goto good;
if (errno != ENOENT)
goto bad;
if (copy == NULL) {
copy = isns_strdup(pathname);
pathname = copy;
}
s = strrchr(copy, '/');
while (s > copy && s[-1] == '/')
--s;
*s = '\0';
isns_assert(ns < 64);
squirrel[ns++] = s;
if (s == copy)
goto bad;
}
good: if (copy)
isns_free(copy);
errno = 0;
return 0;
bad: if (copy)
isns_free(copy);
perror(orig_pathname);
return -1;
}
/*
* This one differs from POSIX dirname; it does not
* modify its argument
*/
const char *
isns_dirname(const char *pathname)
{
static char buffer[4096];
char *s;
strcpy(buffer, pathname);
if ((s = strrchr(buffer, '/')) != NULL) {
*s = '\0';
return buffer;
}
return ".";
}
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