1 files changed, 105 insertions, 0 deletions
diff --git a/src/libstddjb/fmtscan-internal.h b/src/libstddjb/fmtscan-internal.h
new file mode 100644
index 0000000..b1cac3e
--- /dev/null
+++ b/src/libstddjb/fmtscan-internal.h
@@ -0,0 +1,105 @@
+/* ISC license. */
+
+#ifndef FMTSCAN_INTERNAL_H
+#define FMTSCAN_INTERNAL_H
+
+#include <errno.h>
+#include <limits.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/fmtscan.h>
+
+#define SCANB(bits) \
+unsigned int uint##bits##_scan_base (char const *s, uint##bits *u, unsigned char base) \
+{ \
+  static uint##bits const max = (uint##bits)(-1) ; \
+  uint##bits result = 0 ; \
+  unsigned int pos = 0 ; \
+  for (;; pos++) \
+  { \
+    register unsigned char c = fmtscan_num(s[pos], base) ; \
+    if ((c >= base) || (result > ((max - c) / base))) break ; \
+    result = result * base + c ; \
+  } \
+  if (pos) *u = result ; \
+  return pos ; \
+} \
+
+#define SCANB0(bits) \
+unsigned int uint##bits##0_scan_base (char const *s, uint##bits *u, unsigned char base) \
+{ \
+  register unsigned int pos = uint##bits##_scan_base(s, u, base) ; \
+  if (!pos) return (errno = EINVAL, 0) ; \
+  if (!s[pos]) return pos ; \
+  errno = (fmtscan_num(s[pos], base) < base) ? EDOM : EINVAL ; \
+  return 0 ; \
+} \
+
+#define SCANS(type, cstname) \
+unsigned int type##_scan (char const *s, type *n) \
+{ \
+  unsigned type tmp ; \
+  register unsigned int r = 0 ; \
+  register unsigned int sign = 0 ; \
+  if (*s == '-') \
+  { \
+    r = 1 + u##type##_scan(s+1, &tmp) ; \
+    if (r == 1) return 0 ; \
+    if (tmp == 0) *n = 0 ; \
+    else \
+    { \
+      if (tmp-1 > -(cstname##_MIN+1)) \
+      { \
+        tmp /= 10 ; \
+        r-- ; \
+      } \
+      *n = cstname##_MIN + (-(cstname##_MIN+1) - (tmp-1)) ; \
+    } \
+    return r ; \
+  } \
+  if (*s == '+') (s++, sign++) ; \
+  r = u##type##_scan(s, &tmp) ; \
+  if (!r) return 0 ; \
+  r += sign ; \
+  if (tmp > cstname##_MAX) \
+  { \
+    tmp /= 10 ; \
+    r-- ; \
+  } \
+  *n = tmp ; \
+  return r ; \
+} \
+
+#define SCANL(bits) \
+unsigned int uint##bits##_scanlist (uint##bits *tab, unsigned int max, char const *s, unsigned int *num) \
+{ \
+  unsigned int i = 0, len = 0 ; \
+  for (; s[len] && (i < max) ; i++) \
+  { \
+    register unsigned int w = uint##bits##_scan(s + len, tab + i) ; \
+    if (!w) break ; \
+    len += w ; \
+    while (byte_chr(",:; \t\r\n", 7, s[len]) < 7) len++ ; \
+  } \
+  *num = i ; \
+  return len ; \
+} \
+
+#define FMTL(bits) \
+unsigned int uint##bits##_fmtlist (char *s, uint##bits const *tab, unsigned int n) \
+{ \
+  unsigned int i = 0, len = 0 ; \
+  for (; i < n ; i++) \
+  { \
+    register unsigned int w = uint##bits##_fmt(s, tab[i]) ; \
+    len += w ; \
+    if (s) \
+    { \
+      s += w ; \
+      if (i < n-1) { *s++ = ',' ; len++ ; } \
+    } \
+  } \
+  return len ; \
+} \
+
+
+#endif