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authorLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
commit3534b428629be185e096be99e3bd5fdfe32d5544 (patch)
tree210ef3198ed66bc7f7b7bf6a85e4579f455e5a36 /src/libstddjb/getlnmaxsep.c
downloadskalibs-3534b428629be185e096be99e3bd5fdfe32d5544.tar.xz
initial commit with rc for skalibs-2.0.0.0
Diffstat (limited to 'src/libstddjb/getlnmaxsep.c')
-rw-r--r--src/libstddjb/getlnmaxsep.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/libstddjb/getlnmaxsep.c b/src/libstddjb/getlnmaxsep.c
new file mode 100644
index 0000000..2bde443
--- /dev/null
+++ b/src/libstddjb/getlnmaxsep.c
@@ -0,0 +1,28 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/buffer.h>
+#include <skalibs/skamisc.h>
+
+int getlnmaxsep (buffer *b, char *d, unsigned int max, unsigned int *w, char const *sep, unsigned int seplen)
+{
+ if (max < *w) return (errno = EINVAL, -1) ;
+ for (;;)
+ {
+ siovec_t v[2] ;
+ unsigned int len = buffer_len(b) ;
+ unsigned int pos ;
+ int r ;
+ buffer_rpeek(b, v) ;
+ if (len > max - *w) len = max - *w ;
+ pos = siovec_bytein(v, 2, sep, seplen) ;
+ if (pos > len) pos = len ;
+ r = pos < len ;
+ buffer_getnofill(b, d + *w, pos + r) ; *w += pos ;
+ if (*w >= max) return (errno = ERANGE, -1) ;
+ if (r) return 1 ;
+ r = buffer_fill(b) ;
+ if (r <= 0) return r ;
+ }
+}