* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
-#include <string.h>
-#include <stdlib.h>
-
+#define GMQCC_PLATFORM_HEADER
#include "gmqcc.h"
+#include "platform.h"
/*
* Initially this was handled with a table in the gmqcc.h header, but
return util_strtransform(in, out, outsz, "_ ", 'a'-'A');
}
-/*
- * Portable implementation of vasprintf/asprintf. Assumes vsnprintf
- * exists, otherwise compiler error.
- *
- * TODO: fix for MSVC ....
- */
-int util_vasprintf(char **dat, const char *fmt, va_list args) {
- int ret;
- int len;
- char *tmp = NULL;
-
- /*
- * For visual studio _vsnprintf doesn't tell you the length of a
- * formatted string if it overflows. However there is a MSVC
- * intrinsic (which is documented wrong) called _vcsprintf which
- * will return the required amount to allocate.
- */
- #ifdef _MSC_VER
- if ((len = _vscprintf(fmt, args)) < 0) {
- *dat = NULL;
- return -1;
- }
-
- tmp = (char*)mem_a(len + 1);
- if ((ret = _vsnprintf_s(tmp, len+1, len+1, fmt, args)) != len) {
- mem_d(tmp);
- *dat = NULL;
- return -1;
- }
- *dat = tmp;
- return len;
- #else
- /*
- * For everything else we have a decent conforming vsnprintf that
- * returns the number of bytes needed. We give it a try though on
- * a short buffer, since efficiently speaking, it could be nice to
- * above a second vsnprintf call.
- */
- char buf[128];
- va_list cpy;
- va_copy(cpy, args);
- len = vsnprintf(buf, sizeof(buf), fmt, cpy);
- va_end (cpy);
-
- if (len < (int)sizeof(buf)) {
- *dat = util_strdup(buf);
- return len;
- }
+int util_snprintf(char *str, size_t size, const char *fmt, ...) {
+ va_list arg;
+ int ret;
- /* not large enough ... */
- tmp = (char*)mem_a(len + 1);
- if ((ret = vsnprintf(tmp, len + 1, fmt, args)) != len) {
- mem_d(tmp);
- *dat = NULL;
- return -1;
- }
+ va_start(arg, fmt);
+ ret = platform_vsnprintf(str, size, fmt, arg);
+ va_end(arg);
- *dat = tmp;
- return len;
- #endif
+ return ret;
}
+
int util_asprintf(char **ret, const char *fmt, ...) {
va_list args;
int read;
+
va_start(args, fmt);
- read = util_vasprintf(ret, fmt, args);
+ read = platform_vasprintf(ret, fmt, args);
va_end (args);
return read;
}
-void util_seed(uint32_t value) {
- srand((int)value);
+int util_sscanf(const char *str, const char *format, ...) {
+ va_list args;
+ int read;
+
+ va_start(args, format);
+ read = platform_vsscanf(str, format, args);
+ va_end(args);
+
+ return read;
+}
+
+char *util_strncpy(char *dest, const char *src, size_t n) {
+ return platform_strncpy(dest, src, n);
+}
+char *util_strncat(char *dest, const char *src, size_t n) {
+ return platform_strncat(dest, src, n);
+}
+char *util_strcat(char *dest, const char *src) {
+ return platform_strcat(dest, src);
}
+const char *util_strerror(int err) {
+ return platform_strerror(err);
+}
+
+const struct tm *util_localtime(const time_t *timer) {
+ return platform_localtime(timer);
+}
+const char *util_ctime(const time_t *timer) {
+ return platform_ctime(timer);
+}
+
+bool util_isatty(fs_file_t *file) {
+ if (file == (fs_file_t*)stdout) return !!platform_isatty(STDOUT_FILENO);
+ if (file == (fs_file_t*)stderr) return !!platform_isatty(STDERR_FILENO);
+ return false;
+}
+
+const char *util_tmpnam(char *str) {
+ return platform_tmpnam(str);
+}
+
+/*
+ * A small noncryptographic PRNG based on:
+ * http://burtleburtle.net/bob/rand/smallprng.html
+ */
+static uint32_t util_rand_state[4] = {
+ 0xF1EA5EED, 0x00000000,
+ 0x00000000, 0x00000000
+};
+
+#define util_rand_rot(X, Y) (((X)<<(Y))|((X)>>(32-(Y))))
+
uint32_t util_rand() {
- return rand();
+ uint32_t last;
+
+ last = util_rand_state[0] - util_rand_rot(util_rand_state[1], 27);
+ util_rand_state[0] = util_rand_state[1] ^ util_rand_rot(util_rand_state[2], 17);
+ util_rand_state[1] = util_rand_state[2] + util_rand_state[3];
+ util_rand_state[2] = util_rand_state[3] + last;
+ util_rand_state[3] = util_rand_state[0] + last;
+
+ return util_rand_state[3];
}
+
+#undef util_rand_rot
+
+void util_seed(uint32_t value) {
+ size_t i;
+
+ util_rand_state[0] = 0xF1EA5EED;
+ util_rand_state[1] = value;
+ util_rand_state[2] = value;
+ util_rand_state[3] = value;
+
+ for (i = 0; i < 20; ++i)
+ (void)util_rand();
+}
+