1 files changed, 68 insertions, 0 deletions
diff --git a/Build/source/texk/kpathsea/line.c b/Build/source/texk/kpathsea/line.c
new file mode 100644
index 00000000000..30b8fc3f405
--- /dev/null
+++ b/Build/source/texk/kpathsea/line.c
@@ -0,0 +1,68 @@
+/* line.c: return the next line from a file, or NULL.
+
+   Copyright 1998, 1999, 2001, 2005 Olaf Weber
+   Copyright 1992, 93, 95, 96 Karl Berry
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+#include <kpathsea/config.h>
+#include <kpathsea/line.h>
+
+/* Allocate in increments of this size.  */
+#define BLOCK_SIZE 75
+
+char *
+read_line P1C(FILE*, f)
+{
+    int c;
+    unsigned limit = BLOCK_SIZE;
+    unsigned loc = 0;
+    char *line = (char*)xmalloc(limit);
+  
+    while ((c = getc (f)) != EOF && c != '\n' && c != '\r') {
+        line[loc] = c;
+        loc++;
+        
+        /* By testing after the assignment, we guarantee that we'll always
+           have space for the null we append below.  We know we always
+           have room for the first char, since we start with BLOCK_SIZE.  */
+        if (loc == limit) {
+            limit += BLOCK_SIZE;
+            line = (char*)xrealloc(line, limit);
+        }
+    }
+    
+    /* If we read anything, return it.  This can't represent a last
+       ``line'' which doesn't end in a newline, but so what.  */
+    if (c != EOF) {
+        /* Terminate the string.  We can't represent nulls in the file,
+           either.  Again, it doesn't matter.  */
+        line[loc] = 0;
+        /* Absorb LF of a CRLF pair. */
+        if (c == '\r') {
+            c = getc (f);
+            if (c != '\n')
+                ungetc (c, f);
+        }
+    } else { /* At end of file.  */
+        free(line);
+        line = NULL;
+    }
+    
+    return line;
+}
+