Added getline.c, getline.h

3 files changed, 154 insertions, 0 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 07f5bb7..c7205bc 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,2 +29,4 @@ libanubis_a_SOURCES =
 EXTRA_DIST = \
+ getline.h \
+ getopt.h \
  getopt.h \
diff --git a/lib/getline.c b/lib/getline.c
new file mode 100644
index 0000000..30fc5e0
--- /dev/null
+++ b/lib/getline.c
@@ -0,0 +1,117 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+
+   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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA  */
+
+/* First implementation by Alain Magloire */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+ssize_t
+getline (char **lineptr, size_t *n, FILE *stream)
+{
+  return getdelim (lineptr, n, '\n', stream);
+}
+
+#ifndef HAVE_GETDELIM
+
+/* Default value for line length.  */
+static const int line_size = 128;
+
+ssize_t
+getdelim (char **lineptr, size_t *n, int delim, FILE *stream)
+{
+  int indx = 0;
+  int c;
+
+  /* Sanity checks.  */
+  if (lineptr == NULL || n == NULL || stream == NULL)
+    return -1;
+
+  /* Allocate the line the first time.  */
+  if (*lineptr == NULL)
+    {
+      *lineptr = malloc (line_size);
+      if (*lineptr == NULL)
+	return -1;
+      *n = line_size;
+    }
+
+  while ((c = getc (stream)) != EOF)
+    {
+      /* Check if more memory is needed.  */
+      if (indx >= *n)
+	{
+	  *lineptr = realloc (*lineptr, *n + line_size);
+	  if (*lineptr == NULL)
+	    return -1;
+	  *n += line_size;
+	}
+
+      /* Push the result in the line.  */
+      (*lineptr)[indx++] = c;
+
+      /* Bail out.  */
+      if (c == delim)
+	break;
+    }
+
+  /* Make room for the null character.  */
+  if (indx >= *n)
+    {
+      *lineptr = realloc (*lineptr, *n + line_size);
+      if (*lineptr == NULL)
+       return -1;
+      *n += line_size;
+    }
+
+  /* Null terminate the buffer.  */
+  (*lineptr)[indx++] = 0;
+
+  /* The last line may not have the delimiter, we have to
+   * return what we got and the error will be seen on the
+   * next iteration.  */
+  return (c == EOF && (indx - 1) == 0) ? -1 : indx - 1;
+}
+
+#endif /* HAVE_GETDELIM */
+
+
+#ifdef STANDALONE
+int main(void)
+{
+  FILE * fp;
+  char * line = NULL;
+  size_t len = 0;
+  ssize_t read;
+  fp = fopen("/etc/passwd", "r");
+  if (fp == NULL)
+    exit(EXIT_FAILURE);
+  while ((read = getline(&line, &len, fp)) != -1) {
+    printf("Retrieved line of length %zu :\n", read);
+    printf("%s", line);
+  }
+  if (line)
+    free(line);
+  return EXIT_SUCCESS;
+}
+#endif
diff --git a/lib/getline.h b/lib/getline.h
new file mode 100644
index 0000000..77b234f
--- /dev/null
+++ b/lib/getline.h
@@ -0,0 +1,35 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+
+   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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA  */
+
+#ifndef _GETLINE_H_
+# define _GETLINE_H_ 1
+
+# include <stdio.h>
+
+# ifndef PARAMS
+#  if defined (__GNUC__) || __STDC__
+#   define PARAMS(args) args
+#  else
+#   define PARAMS(args) ()
+#  endif
+# endif
+
+extern int getline PARAMS ((char **_lineptr, size_t *_n, FILE *_stream));
+
+extern int getdelim PARAMS ((char **_lineptr, size_t *_n, int _delimiter, FILE *_stream));
+
+#endif /* ! _GETLINE_H_ */