perl 5.000perl-5.000

[editor's note: this commit combines approximate 4 months of furious
releases of Andy Dougherty and Larry Wall - see pod/perlhist.pod for
details.  Andy notes that;
 
Alas neither my "Irwin AccuTrack" nor my DC 600A quarter-inch cartridge 
backup tapes from that era seem to be readable anymore.  I guess 13 years 
exceeds the shelf life for that backup technology :-(.
]

1 files changed, 85 insertions, 0 deletions

diff --git a/ext/DynaLoader/dlutils.c b/ext/DynaLoader/dlutils.c
new file mode 100644
index 0000000000..0ce082182c
--- /dev/null
+++ b/ext/DynaLoader/dlutils.c
@@ -0,0 +1,85 @@
+/* dlutils.c - handy functions and definitions for dl_*.xs files
+ *
+ * Currently this file is simply #included into dl_*.xs/.c files.
+ * It should really be split into a dlutils.h and dlutils.c
+ *
+ */
+
+
+/* pointer to allocated memory for last error message */
+static char *LastError  = (char*)NULL;
+
+
+
+#ifdef DEBUGGING
+/* currently not connected to $DynaLoader::dl_error but should be */
+static int dl_debug = 0;
+#define DLDEBUG(level,code)	if(dl_debug>=level){ code; }
+#else
+#define DLDEBUG(level,code)
+#endif
+
+
+static void
+dl_generic_private_init()	/* called by dl_*.xs dl_private_init() */
+{
+#ifdef DEBUGGING
+    char *perl_dl_debug = getenv("PERL_DL_DEBUG");
+    if (perl_dl_debug)
+	dl_debug = atoi(perl_dl_debug);
+#endif
+}
+
+
+/* SaveError() takes printf style args and saves the result in LastError */
+#ifdef STANDARD_C
+static void
+SaveError(char* pat, ...)
+#else
+/*VARARGS0*/
+static void
+SaveError(pat, va_alist)
+    char *pat;
+    va_dcl
+#endif
+{
+    va_list args;
+    char *message;
+    int len;
+
+    /* This code is based on croak/warn but I'm not sure where mess() */
+    /* gets its buffer space from! */
+
+#ifdef I_STDARG
+    va_start(args, pat);
+#else
+    va_start(args);
+#endif
+    message = mess(pat, &args);
+    va_end(args);
+
+    len = strlen(message) + 1 ;	/* include terminating null char */
+
+    /* Allocate some memory for the error message */
+    if (LastError)
+        LastError = (char*)saferealloc(LastError, len) ;
+    else
+        LastError = safemalloc(len) ;
+
+    /* Copy message into LastError (including terminating null char)	*/
+    strncpy(LastError, message, len) ;
+    DLDEBUG(2,fprintf(stderr,"DynaLoader: stored error msg '%s'\n",LastError));
+}
+
+
+/* prepend underscore to s. write into buf. return buf. */
+char *
+dl_add_underscore(s, buf)
+char *s;
+char *buf;
+{
+    *buf = '_';
+    (void)strcpy(buf + 1, s);
+    return buf;
+}
+