New library functions for msgcat, msgconv, msgen, msggrep, msgsed.

1 files changed, 58 insertions, 0 deletions

diff --git a/lib/pipe.h b/lib/pipe.h
new file mode 100644
index 0000000..cb45cfb
--- /dev/null
+++ b/lib/pipe.h
@@ -0,0 +1,58 @@
+/* Creation of subprocesses, communicating via pipes.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   Written by Bruno Haible <haible@clisp.cons.org>, 2001.
+
+   This program 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 2, or (at your option)
+   any later version.
+
+   This program 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 this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _PIPE_H
+#define _PIPE_H
+
+/* Open a pipe for output to a child process.
+ * The child's stdout goes to a file.
+ *
+ *           write       system                read
+ *    parent  ->   fd[0]   ->   STDIN_FILENO    ->   child
+ *
+ */
+extern pid_t create_pipe_out PARAMS ((const char *progname,
+				      const char *prog_path, char **prog_argv,
+				      const char *prog_stdout,
+				      int fd[1]));
+
+/* Open a pipe for input from a child process.
+ * The child's stdin comes to a file.
+ *
+ *           read        system                write
+ *    parent  <-   fd[0]   <-   STDOUT_FILENO   <-   child
+ *
+ */
+extern pid_t create_pipe_in PARAMS ((const char *progname,
+				     const char *prog_path, char **prog_argv,
+				     const char *prog_stdin,
+				     int fd[1]));
+
+/* Open a bidirectional pipe.
+ *
+ *           write       system                read
+ *    parent  ->   fd[1]   ->   STDIN_FILENO    ->   child
+ *    parent  <-   fd[0]   <-   STDOUT_FILENO   <-   child
+ *           read        system                write
+ *
+ */
+extern pid_t create_pipe_bidi PARAMS ((const char *progname,
+				       const char *prog_path, char **prog_argv,
+				       int fd[2]));
+
+#endif /* _PIPE_H */