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util: xml: Introduce virXPathU(Int|LongLong)Base

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In an effort to remove the 'Long' variants of XPath number fetching
functions we need a way to replace the hex number parsing capability.

The new helpers are created from the originals by adding a 'base'
argument and keeping the original function as a wrapper to pass 10.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2022-10-05 09:17:29 +02:00
parent 90cb594cf6
commit 7160805e76
3 changed files with 44 additions and 10 deletions
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2
src/libvirt_private.syms
View File

@ -3699,9 +3699,11 @@ virXPathNode;
virXPathNodeSet;
virXPathString;
virXPathUInt;
virXPathUIntBase;
virXPathULong;
virXPathULongHex;
virXPathULongLong;
virXPathULongLongBase;
# Let emacs know we want case-insensitive sorting

42
src/util/virxml.c
View File

@ -228,9 +228,10 @@ virXPathULongBase(const char *xpath,
/**
* virXPathUInt:
* virXPathUIntBase:
* @xpath: the XPath string to evaluate
* @ctxt: an XPath context
* @base: base of the number to fetch @value as
* @value: the returned unsigned int value
*
* Convenience function to evaluate an XPath number. The @xpath expression
@ -242,22 +243,32 @@ virXPathULongBase(const char *xpath,
* value doesn't have an unsigned int format.
*/
int
virXPathUInt(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int *value)
virXPathUIntBase(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int base,
unsigned int *value)
{
g_autoptr(xmlXPathObject) obj = NULL;
if (!(obj = virXPathEvalString(xpath, ctxt)))
return -1;
if (virStrToLong_ui((char *) obj->stringval, NULL, 10, value) < 0)
if (virStrToLong_ui((char *) obj->stringval, NULL, base, value) < 0)
return -2;
return 0;
}
int
virXPathUInt(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int *value)
{
return virXPathUIntBase(xpath, ctxt, 10, value);
}
/**
* virXPathULong:
* @xpath: the XPath string to evaluate
@ -302,9 +313,10 @@ virXPathULongHex(const char *xpath,
/**
* virXPathULongLong:
* virXPathULongLongBase:
* @xpath: the XPath string to evaluate
* @ctxt: an XPath context
* @base: base of the number to fetch @value as
* @value: the returned unsigned long long value
*
* Convenience function to evaluate an XPath number. The @xpath expression
@ -316,22 +328,32 @@ virXPathULongHex(const char *xpath,
* value doesn't have a unsigned long long format.
*/
int
virXPathULongLong(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned long long *value)
virXPathULongLongBase(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int base,
unsigned long long *value)
{
g_autoptr(xmlXPathObject) obj = NULL;
if (!(obj = virXPathEvalString(xpath, ctxt)))
return -1;
if (virStrToLong_ullp((char *) obj->stringval, NULL, 10, value) < 0)
if (virStrToLong_ullp((char *) obj->stringval, NULL, base, value) < 0)
return -2;
return 0;
}
int
virXPathULongLong(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned long long *value)
{
return virXPathULongLongBase(xpath, ctxt, 10, value);
}
/**
* virXPathLongLong:
* @xpath: the XPath string to evaluate

10
src/util/virxml.h
View File

@ -51,6 +51,11 @@ virXPathInt(const char *xpath,
xmlXPathContextPtr ctxt,
int *value);
int
virXPathUIntBase(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int base,
unsigned int *value);
int
virXPathUInt(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int *value);
@ -63,6 +68,11 @@ virXPathULong(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned long *value);
int
virXPathULongLongBase(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned int base,
unsigned long long *value);
int
virXPathULongLong(const char *xpath,
xmlXPathContextPtr ctxt,
unsigned long long *value);