*
* The 'date' and 'time' arguments should likely be called with
* "__DATE__" and "__TIME__" to use the time the binary was built.
- * Alternatively, the "set_program_name" macro may be called to do this
+ * Alternatively, the "ovs_set_program_name" macro may be called to do this
* automatically.
*/
void
-set_program_name__(const char *argv0, const char *version, const char *date,
- const char *time)
+ovs_set_program_name__(const char *argv0, const char *version, const char *date,
+ const char *time)
{
char *basename;
#ifdef _WIN32
* caller must not modify or free the returned string.
*/
const char *
-get_program_version(void)
+ovs_get_program_version(void)
{
return program_version;
}
+/* Returns a pointer to a string describing the program name. The
+ * caller must not modify or free the returned string.
+ */
+const char *
+ovs_get_program_name(void)
+{
+ return program_name;
+}
+
/* Print the version information for the program. */
void
ovs_print_version(uint8_t min_ofp, uint8_t max_ofp)
return s + n;
}
-/* This is an implementation of the standard sscanf() function, with the
- * following exceptions:
- *
- * - It returns true if the entire format was successfully scanned and
- * converted, false if any conversion failed.
- *
- * - The standard doesn't define sscanf() behavior when an out-of-range value
- * is scanned, e.g. if a "%"PRIi8 conversion scans "-1" or "0x1ff". Some
- * implementations consider this an error and stop scanning. This
- * implementation never considers an out-of-range value an error; instead,
- * it stores the least-significant bits of the converted value in the
- * destination, e.g. the value 255 for both examples earlier.
- *
- * - Only single-byte characters are supported, that is, the 'l' modifier
- * on %s, %[, and %c is not supported. The GNU extension 'a' modifier is
- * also not supported.
- *
- * - %p is not supported.
- */
-bool
-ovs_scan(const char *s, const char *format, ...)
+static bool
+ovs_scan__(const char *s, int *n, const char *format, va_list *args)
{
const char *const start = s;
bool ok = false;
const char *p;
- va_list args;
- va_start(args, format);
p = format;
while (*p != '\0') {
struct scan_spec spec;
}
switch (c) {
case 'd':
- s = scan_int(s, &spec, 10, &args);
+ s = scan_int(s, &spec, 10, args);
break;
case 'i':
- s = scan_int(s, &spec, 0, &args);
+ s = scan_int(s, &spec, 0, args);
break;
case 'o':
- s = scan_int(s, &spec, 8, &args);
+ s = scan_int(s, &spec, 8, args);
break;
case 'u':
- s = scan_int(s, &spec, 10, &args);
+ s = scan_int(s, &spec, 10, args);
break;
case 'x':
case 'X':
- s = scan_int(s, &spec, 16, &args);
+ s = scan_int(s, &spec, 16, args);
break;
case 'e':
case 'g':
case 'E':
case 'G':
- s = scan_float(s, &spec, &args);
+ s = scan_float(s, &spec, args);
break;
case 's':
- s = scan_string(s, &spec, &args);
+ s = scan_string(s, &spec, args);
break;
case '[':
- s = scan_set(s, &spec, &p, &args);
+ s = scan_set(s, &spec, &p, args);
break;
case 'c':
- s = scan_chars(s, &spec, &args);
+ s = scan_chars(s, &spec, args);
break;
case 'n':
if (spec.type != SCAN_DISCARD) {
- *va_arg(args, int *) = s - start;
+ *va_arg(*args, int *) = s - start;
}
break;
}
goto exit;
}
}
- ok = true;
+ if (n) {
+ *n = s - start;
+ }
+ ok = true;
exit:
- va_end(args);
return ok;
}
+/* This is an implementation of the standard sscanf() function, with the
+ * following exceptions:
+ *
+ * - It returns true if the entire format was successfully scanned and
+ * converted, false if any conversion failed.
+ *
+ * - The standard doesn't define sscanf() behavior when an out-of-range value
+ * is scanned, e.g. if a "%"PRIi8 conversion scans "-1" or "0x1ff". Some
+ * implementations consider this an error and stop scanning. This
+ * implementation never considers an out-of-range value an error; instead,
+ * it stores the least-significant bits of the converted value in the
+ * destination, e.g. the value 255 for both examples earlier.
+ *
+ * - Only single-byte characters are supported, that is, the 'l' modifier
+ * on %s, %[, and %c is not supported. The GNU extension 'a' modifier is
+ * also not supported.
+ *
+ * - %p is not supported.
+ */
+bool
+ovs_scan(const char *s, const char *format, ...)
+{
+ va_list args;
+ bool res;
+
+ va_start(args, format);
+ res = ovs_scan__(s, NULL, format, &args);
+ va_end(args);
+ return res;
+}
+
+/*
+ * This function is similar to ocs_scan(), extra parameter `n` is added to
+ * return number of scanned characters.
+ */
+bool
+ovs_scan_len(const char *s, int *n, const char *format, ...)
+{
+ va_list args;
+ bool success;
+ int n1;
+
+ va_start(args, format);
+ success = ovs_scan__(s + *n, &n1, format, &args);
+ va_end(args);
+ if (success) {
+ *n = *n + n1;
+ }
+ return success;
+}
+
void
xsleep(unsigned int seconds)
{
projects / cascardo / ovs.git / blobdiff