Added a_Dpip_get_attr_l() to DPIP's API

2 files changed, 16 insertions, 5 deletions

diff --git a/dpip/dpip.c b/dpip/dpip.c
index 5d83a2e9..bf6667d3 100644
--- a/dpip/dpip.c
+++ b/dpip/dpip.c
@@ -107,17 +107,18 @@ char *a_Dpip_build_cmd(const char *format, ...)
 }
 
 /*
- * Task: given a tag and an attribute name, return its value.
- *       (stuffing of ' is removed here)
+ * Task: given a tag, its size and an attribute name, return the
+ * attribute value (stuffing of ' is removed here).
+ *
  * Return value: the attribute value, or NULL if not present or malformed.
  */
-char *a_Dpip_get_attr(char *tag, size_t tagsize, const char *attrname)
+char *a_Dpip_get_attr_l(char *tag, size_t tagsize, const char *attrname)
 {
    uint_t i, n = 0, found = 0;
    char *p, *q, *start, *val = NULL;
    DpipTagParsingState state = SEEK_NAME;
 
-   if (!attrname || !*attrname)
+   if (!tag || !tagsize || !attrname || !*attrname)
       return NULL;
 
    for (i = 1; i < tagsize && !found; ++i) {
@@ -164,5 +165,14 @@ char *a_Dpip_get_attr(char *tag, size_t tagsize, const char *attrname)
    return val;
 }
 
+/*
+ * Task: given a tag and an attribute name, return its value.
+ * Return value: the attribute value, or NULL if not present or malformed.
+ */
+char *a_Dpip_get_attr(char *tag, const char *attrname)
+{
+   return (tag ? a_Dpip_get_attr_l(tag, strlen(tag), attrname) : NULL);
+}
+
 /* ------------------------------------------------------------------------- */
 
diff --git a/dpip/dpip.h b/dpip/dpip.h
index 29bb5fcf..584bf89e 100644
--- a/dpip/dpip.h
+++ b/dpip/dpip.h
@@ -23,7 +23,8 @@ char *a_Dpip_build_cmd(const char *format, ...);
  *       (dpip character escaping is removed here)
  * Return value: the attribute value, or NULL if not present or malformed.
  */
-char *a_Dpip_get_attr(char *tag, size_t tagsize, const char *attrname);
+char *a_Dpip_get_attr(char *tag, const char *attrname);
+char *a_Dpip_get_attr_l(char *tag, size_t tagsize, const char *attrname);
 
 
 #ifdef __cplusplus