1 files changed, 65 insertions, 0 deletions
diff --git a/libfonts_getline__.c b/libfonts_getline__.c
new file mode 100644
index 0000000..58b1adc
--- /dev/null
+++ b/libfonts_getline__.c
@@ -0,0 +1,65 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+/* alternative to getline(3) that does not have a line length limit */
+
+ssize_t
+libfonts_getline__(int fd, char **linep, char **bufp, size_t *sizep, size_t *offp, size_t *availp)
+{
+	size_t len, size;
+	ssize_t r;
+	char *new;
+
+	for (;;) {
+		for (len = 0; *offp + len < *availp; len++) {
+			if ((*bufp)[*offp + len] == '\n') {
+				*linep = &(*bufp)[*offp];
+				*offp += len += 1;
+				return (ssize_t)len;
+			}
+		}
+
+		if (*offp) {
+			memmove(&(*bufp)[0], &(*bufp)[*offp], *availp -= *offp);
+			*offp = 0;
+		}
+
+		if (*availp == *sizep) {
+			if (*sizep > SIZE_MAX - 128)
+				goto enomem;
+			size = *sizep + 128;
+			new = realloc(*bufp, size);
+			if (!new) {
+			enomem:
+				errno = ENOMEM;
+				return -1;
+			}
+			*bufp = new;
+			*sizep = size;
+		}
+		r = read(fd, &(*bufp)[*availp], *sizep - *availp);
+		if (r <= 0) {
+			if (r < 0)
+				return -1;
+			*linep = *bufp;
+			*offp = *availp;
+			return (ssize_t)*availp;
+		}
+		*availp += (size_t)r;
+	}
+}
+
+
+#else
+
+
+int
+main(void)
+{
+	return 0; /* TODO add test */
+}
+
+
+#endif