remplacement implementation of the GNU only getline

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@3218 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/src/Makefile.am b/src/Makefile.am
index 17073f4..9124ac3 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,4 @@
-AM_CFLAGS= -g
+AM_CFLAGS+= -g 
 #AM_CFLAGS= -DNDEBUG 
 
 # -DNLOG   cuts absolutely all logs at compilation time.
@@ -111,7 +111,7 @@ lib_LTLIBRARIES= libsimgrid.la libgras.la
 
 COMMON_SRC=\
   \
-  xbt/snprintf.c                                                             \
+  xbt/snprintf.c    xbt/getline.c                                            \
   xbt/ex.c          xbt/xbt_thread.c                                         \
   \
   xbt_modinter.h    gras_modinter.h                                          \

diff --git a/src/xbt/getline.c b/src/xbt/getline.c
new file mode 100644 (file)
index 0000000..dfda650
--- /dev/null
+++ b/src/xbt/getline.c
@@ -0,0 +1,59 @@
+/* $Id$ */
+
+/* getline -- reimplementation of the GNU's getline() for other platforms   */
+
+/* Copyright (C) 2007 Martin Quinson. All rights reserved.                  */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+/** @brief  Reads an entire line.
+ * 
+ * Reads a line from the file specified by the file pointer passed
+ * as parameter. This function is intead to replace the non-portable
+ * GNU getline() function.
+ * 
+ * @param buf address to a string buffer. If null, it will be allocated to receive the read data. If not and if too short, it will be reallocated. Must be freed by caller.
+ * @param n size of the buffer. Updated accordingly by the function.
+ * @param stream File pointer to the file to read from.
+ * @return The amount of chars read (or -1 on failure, ie on end of file condition)
+ */
+#include "xbt/misc.h"
+#include "xbt/sysdep.h" /* headers of this function */
+#include "portable.h"
+
+ssize_t getline(char **buf, size_t *n, FILE *stream) {
+   
+   int i, ch;
+   
+   if (!*buf) {
+     *buf = xbt_malloc(512);
+     *n = 512;
+   }
+   
+   if (feof(stream))
+     return (ssize_t)-1;
+   
+   for (i=0; (ch = fgetc(stream)) != EOF; i++)  {
+       
+      if (i >= (*n) + 1)
+       *buf = xbt_realloc(*buf, *n += 512);
+       
+      (*buf)[i] = ch;
+       
+      if ((*buf)[i] == '\n')  {
+        i++;
+        (*buf)[i] = '\0';
+        break;
+      }      
+   }
+      
+   if (i == *n) 
+     *buf = xbt_realloc(*buf, *n += 1);
+   
+   (*buf)[i] = '\0';
+
+   return (ssize_t)i;
+}
+
+