--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the University of California, Berkeley nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RDLINE_H_
+#define _RDLINE_H_
+
+/**
+ * This file is a small equivalent to the GNU readline library, but it
+ * was originally designed for small systems, like Atmel AVR
+ * microcontrollers (8 bits). Indeed, we don't use any malloc that is
+ * sometimes not implemented (or just not recommended) on such
+ * systems.
+ *
+ * Obviously, it does not support as many things as the GNU readline,
+ * but at least it supports some interesting features like a kill
+ * buffer and a command history.
+ *
+ * It also have a feature that does not have the GNU readline (as far
+ * as I know): we can have several instances of it running at the same
+ * time, even on a monothread program, since it works with callbacks.
+ *
+ * The lib is designed for a client-side or a server-side use:
+ * - server-side: the server receives all data from a socket, including
+ * control chars, like arrows, tabulations, ... The client is
+ * very simple, it can be a telnet or a minicom through a serial line.
+ * - client-side: the client receives its data through its stdin for
+ * instance.
+ */
+
+#include <stdio.h>
+#include <cmdline_cirbuf.h>
+#include <cmdline_vt100.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* configuration */
+#define RDLINE_BUF_SIZE 512
+#define RDLINE_PROMPT_SIZE 32
+#define RDLINE_VT100_BUF_SIZE 8
+#define RDLINE_HISTORY_BUF_SIZE BUFSIZ
+#define RDLINE_HISTORY_MAX_LINE 64
+
+enum rdline_status {
+ RDLINE_INIT,
+ RDLINE_RUNNING,
+ RDLINE_EXITED
+};
+
+struct rdline;
+
+typedef int (rdline_write_char_t)(struct rdline *rdl, char);
+typedef void (rdline_validate_t)(struct rdline *rdl,
+ const char *buf, unsigned int size);
+typedef int (rdline_complete_t)(struct rdline *rdl, const char *buf,
+ char *dstbuf, unsigned int dstsize,
+ int *state);
+
+struct rdline {
+ enum rdline_status status;
+ /* rdline bufs */
+ struct cirbuf left;
+ struct cirbuf right;
+ char left_buf[RDLINE_BUF_SIZE+2]; /* reserve 2 chars for the \n\0 */
+ char right_buf[RDLINE_BUF_SIZE];
+
+ char prompt[RDLINE_PROMPT_SIZE];
+ unsigned int prompt_size;
+
+ char kill_buf[RDLINE_BUF_SIZE];
+ unsigned int kill_size;
+
+ /* history */
+ struct cirbuf history;
+ char history_buf[RDLINE_HISTORY_BUF_SIZE];
+ int history_cur_line;
+
+ /* callbacks and func pointers */
+ rdline_write_char_t *write_char;
+ rdline_validate_t *validate;
+ rdline_complete_t *complete;
+
+ /* vt100 parser */
+ struct cmdline_vt100 vt100;
+
+ /* opaque pointer */
+ void *opaque;
+};
+
+/**
+ * Init fields for a struct rdline. Call this only once at the beginning
+ * of your program.
+ * \param rdl A pointer to an uninitialized struct rdline
+ * \param write_char The function used by the function to write a character
+ * \param validate A pointer to the function to execute when the
+ * user validates the buffer.
+ * \param complete A pointer to the function to execute when the
+ * user completes the buffer.
+ */
+int rdline_init(struct rdline *rdl,
+ rdline_write_char_t *write_char,
+ rdline_validate_t *validate,
+ rdline_complete_t *complete);
+
+
+/**
+ * Init the current buffer, and display a prompt.
+ * \param rdl A pointer to a struct rdline
+ * \param prompt A string containing the prompt
+ */
+void rdline_newline(struct rdline *rdl, const char *prompt);
+
+/**
+ * Call it and all received chars will be ignored.
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_stop(struct rdline *rdl);
+
+/**
+ * Same than rdline_stop() except that next calls to rdline_char_in()
+ * will return RDLINE_RES_EXITED.
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_quit(struct rdline *rdl);
+
+/**
+ * Restart after a call to rdline_stop() or rdline_quit()
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_restart(struct rdline *rdl);
+
+/**
+ * Redisplay the current buffer
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_redisplay(struct rdline *rdl);
+
+/**
+ * Reset the current buffer and setup for a new line.
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_reset(struct rdline *rdl);
+
+
+/* return status for rdline_char_in() */
+#define RDLINE_RES_SUCCESS 0
+#define RDLINE_RES_VALIDATED 1
+#define RDLINE_RES_COMPLETE 2
+#define RDLINE_RES_NOT_RUNNING -1
+#define RDLINE_RES_EOF -2
+#define RDLINE_RES_EXITED -3
+
+/**
+ * append a char to the readline buffer.
+ * Return RDLINE_RES_VALIDATE when the line has been validated.
+ * Return RDLINE_RES_COMPLETE when the user asked to complete the buffer.
+ * Return RDLINE_RES_NOT_RUNNING if it is not running.
+ * Return RDLINE_RES_EOF if EOF (ctrl-d on an empty line).
+ * Else return RDLINE_RES_SUCCESS.
+ * XXX error case when the buffer is full ?
+ *
+ * \param rdl A pointer to a struct rdline
+ * \param c The character to append
+ */
+int rdline_char_in(struct rdline *rdl, char c);
+
+/**
+ * Return the current buffer, terminated by '\0'.
+ * \param rdl A pointer to a struct rdline
+ */
+const char *rdline_get_buffer(struct rdline *rdl);
+
+
+/**
+ * Add the buffer to history.
+ * return < 0 on error.
+ * \param rdl A pointer to a struct rdline
+ * \param buf A buffer that is terminated by '\0'
+ */
+int rdline_add_history(struct rdline *rdl, const char *buf);
+
+/**
+ * Clear current history
+ * \param rdl A pointer to a struct rdline
+ */
+void rdline_clear_history(struct rdline *rdl);
+
+/**
+ * Get the i-th history item
+ */
+char *rdline_get_history_item(struct rdline *rdl, unsigned int i);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RDLINE_H_ */
Code Review / deb_dpdk.git / blobdiff