1 files changed, 90 insertions, 0 deletions
diff --git a/getl.c b/getl.c
new file mode 100644
index 0000000..d989aa9
--- /dev/null
+++ b/getl.c
@@ -0,0 +1,90 @@
+/* runcap - run program and capture its output
+   Copyright (C) 2017 Sergey Poznyakoff
+
+   Runcap is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 3 of the License, or (at your
+   option) any later version.
+
+   Runcap is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with Runcap. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "runcap.h"
+
+ssize_t
+runcap_getline(struct runcap *rc, int stream, char **pstr, size_t *psize)
+{
+	struct filecapture *fp;
+	char *str;
+	size_t size;
+	size_t n;
+	char c;
+	int res;
+	
+	if (!pstr || !psize) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	str = *pstr;
+	size = *psize;
+
+	fp = runcap_filecapture(rc, stream);
+	if (!fp)
+		return -1;
+
+	if (!str || size == 0) {
+		/* Initial allocation */
+		size = 16;
+		str = malloc(size);
+		if (!str)
+			return -1;
+		*pstr = str;
+		*psize = size;
+	}
+	
+	n = 0;
+	while ((res = runcap_getc(rc, stream, &c)) == 1) {
+		if (n == size) {
+			char *p;
+			size_t sz;
+			
+			if (size >= (size_t) -1 / 3 * 2) {
+				errno = ENOMEM;
+				return -1;
+			}
+			sz = size + (size + 1) / 2;
+			p = realloc(str, sz);
+			if (!p)
+				return -1;
+			*pstr = str = p;
+			*psize = size = sz;
+		}
+		str[n++] = c;
+		if (c == '\n')
+			break;
+	}
+
+	if (res == -1)
+		return -1;
+	
+	if (n == size) {
+		char *p = realloc(str, size + 1);
+		if (!p)
+			return -1;
+		*pstr = str = p;
+		*psize = ++size;
+	}
+	str[n] = 0;
+	return n;
+}
+