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qemu-option: factor out parse_option_size

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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-07-22 16:43:02 +02:00 committed by Anthony Liguori
parent 67b1355b74
commit 7695019bce
1 changed files with 36 additions and 26 deletions
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62
qemu-option.c
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@ -182,6 +182,40 @@ static int parse_option_bool(const char *name, const char *value, int *ret)
return 0;
}
static int parse_option_size(const char *name, const char *value, uint64_t *ret)
{
char *postfix;
double sizef;
if (value != NULL) {
sizef = strtod(value, &postfix);
switch (*postfix) {
case 'T':
sizef *= 1024;
case 'G':
sizef *= 1024;
case 'M':
sizef *= 1024;
case 'K':
case 'k':
sizef *= 1024;
case 'b':
case '\0':
*ret = (uint64_t) sizef;
break;
default:
fprintf(stderr, "Option '%s' needs size as parameter\n", name);
fprintf(stderr, "You may use k, M, G or T suffixes for "
"kilobytes, megabytes, gigabytes and terabytes.\n");
return -1;
}
} else {
fprintf(stderr, "Option '%s' needs a parameter\n", name);
return -1;
}
return 0;
}
/*
* Sets the value of a parameter in a given option list. The parsing of the
* value depends on the type of option:
@ -229,34 +263,10 @@ int set_option_parameter(QEMUOptionParameter *list, const char *name,
break;
case OPT_SIZE:
if (value != NULL) {
double sizef = strtod(value, (char**) &value);
switch (*value) {
case 'T':
sizef *= 1024;
case 'G':
sizef *= 1024;
case 'M':
sizef *= 1024;
case 'K':
case 'k':
sizef *= 1024;
case 'b':
case '\0':
list->value.n = (uint64_t) sizef;
break;
default:
fprintf(stderr, "Option '%s' needs size as parameter\n", name);
fprintf(stderr, "You may use k, M, G or T suffixes for "
"kilobytes, megabytes, gigabytes and terabytes.\n");
return -1;
}
} else {
fprintf(stderr, "Option '%s' needs a parameter\n", name);
if (-1 == parse_option_size(name, value, &list->value.n))
return -1;
}
break;
default:
fprintf(stderr, "Bug: Option '%s' has an unknown type\n", name);
return -1;