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authorRich Felker <dalias@aerifal.cx>2012-04-16 16:55:24 -0400
committerRich Felker <dalias@aerifal.cx>2012-04-16 16:55:24 -0400
commit96e9773eb764afa649b099a6e283dba4c69389a9 (patch)
tree52e2223324cce3db02ff6318ad3f8eb940bd8d5f /src/stdlib/wcstol.c
parent18efeb320b763e541a7dbf61a7da1cbe13ab2be9 (diff)
downloadmusl-96e9773eb764afa649b099a6e283dba4c69389a9.tar.gz
use the new integer parser (FILE/shgetc based) for strtol, wcstol, etc.
Diffstat (limited to 'src/stdlib/wcstol.c')
-rw-r--r--src/stdlib/wcstol.c85
1 files changed, 71 insertions, 14 deletions
diff --git a/src/stdlib/wcstol.c b/src/stdlib/wcstol.c
index aad62e5b..cbdd8067 100644
--- a/src/stdlib/wcstol.c
+++ b/src/stdlib/wcstol.c
@@ -1,18 +1,75 @@
-#include <wchar.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <errno.h>
-#include <limits.h>
+#include "stdio_impl.h"
+#include "intscan.h"
+#include "shgetc.h"
-long wcstol(const wchar_t *s, wchar_t **p, int base)
+/* This read function heavily cheats. It knows:
+ * (1) len will always be 1
+ * (2) non-ascii characters don't matter */
+
+static size_t do_read(FILE *f, unsigned char *buf, size_t len)
+{
+ size_t i;
+ const wchar_t *wcs = f->cookie;
+
+ for (i=0; i<f->buf_size && wcs[i]; i++)
+ f->buf[i] = wcs[i] < 128 ? wcs[i] : '@';
+ f->rpos = f->buf;
+ f->rend = f->buf + i;
+ f->cookie = (void *)(wcs+i);
+
+ if (i && len) {
+ *buf = *f->rpos++;
+ return 1;
+ }
+ return 0;
+}
+
+static unsigned long long wcstox(const wchar_t *s, wchar_t **p, int base, unsigned long long lim)
{
- intmax_t x = wcstoimax(s, p, base);
- if (x > LONG_MAX) {
- errno = ERANGE;
- return LONG_MAX;
- } else if (x < LONG_MIN) {
- errno = ERANGE;
- return LONG_MIN;
+ unsigned char buf[64];
+ FILE f = {0};
+ f.flags = 0;
+ f.rpos = f.rend = 0;
+ f.buf = buf;
+ f.buf_size = sizeof buf;
+ f.lock = -1;
+ f.read = do_read;
+ f.cookie = (void *)s;
+ shlim(&f, 0);
+ unsigned long long y = __intscan(&f, base, 1, lim);
+ if (p) {
+ size_t cnt = shcnt(&f);
+ *p = (wchar_t *)s + cnt;
}
- return x;
+ return y;
+}
+
+unsigned long long wcstoull(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstox(s, p, base, ULLONG_MAX);
+}
+
+long long wcstoll(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstox(s, p, base, LLONG_MIN);
+}
+
+unsigned long wcstoul(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstox(s, p, base, ULONG_MAX);
+}
+
+long wcstol(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstox(s, p, base, 0UL+LONG_MIN);
+}
+
+intmax_t wcstoimax(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstoll(s, p, base);
+}
+
+uintmax_t wcstoumax(const wchar_t *s, wchar_t **p, int base)
+{
+ return wcstoull(s, p, base);
}