initial commit with rc for skalibs-2.0.0.0

1 files changed, 37 insertions, 0 deletions

diff --git a/src/libstddjb/openreadfileclose.c b/src/libstddjb/openreadfileclose.c
new file mode 100644
index 0000000..90e6b47
--- /dev/null
+++ b/src/libstddjb/openreadfileclose.c
@@ -0,0 +1,37 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/djbunix.h>
+
+int openreadfileclose (char const *file, stralloc *sa, unsigned int limit)
+{
+  unsigned int n ;
+  int fd = open_readb(file) ;
+  if (fd < 0) return 0 ;
+  {
+    struct stat st ;
+    if (fstat(fd, &st) < 0) goto err ;
+    n = st.st_size ;
+  }
+  if (limit && (limit < n)) n = limit ;
+  if (!stralloc_ready_tuned(sa, sa->len + n, 0, 0, 1)) goto err ;
+  {
+    register unsigned int r = allread(fd, sa->s + sa->len, n) ;
+    sa->len += r ;
+    if (r < n) goto err ;
+  }
+  fd_close(fd) ;
+  return 1 ;
+
+err:
+  {
+    register int e = errno ;
+    fd_close(fd) ;
+    errno = e ;
+  }
+  return 0 ;
+}