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+/* linenoise.h -- guerrilla line editing library against the idea that a
+ * line editing lib needs to be 20,000 lines of C code.
+ *
+ * See linenoise.c for more information.
+ *
+ * ------------------------------------------------------------------------
+ *
+ * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
+ * Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
+ *
+ * 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.
+ *
+ * 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
+ * HOLDER 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.
+ */
+
+#ifndef __LINENOISE_H
+#define __LINENOISE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef NO_COMPLETION
+typedef struct linenoiseCompletions {
+  size_t len;
+  char **cvec;
+} linenoiseCompletions;
+
+/*
+ * The callback type for tab completion handlers.
+ */
+typedef void(linenoiseCompletionCallback)(const char *prefix, linenoiseCompletions *comp, void *userdata);
+
+/*
+ * Sets the current tab completion handler and returns the previous one, or NULL
+ * if no prior one has been set.
+ */
+linenoiseCompletionCallback * linenoiseSetCompletionCallback(linenoiseCompletionCallback *comp, void *userdata);
+
+/*
+ * Adds a copy of the given string to the given completion list. The copy is owned
+ * by the linenoiseCompletions object.
+ */
+void linenoiseAddCompletion(linenoiseCompletions *comp, const char *str);
+
+typedef char*(linenoiseHintsCallback)(const char *, int *color, int *bold, void *userdata);
+typedef void(linenoiseFreeHintsCallback)(void *hint, void *userdata);
+void linenoiseSetHintsCallback(linenoiseHintsCallback *callback, void *userdata);
+void linenoiseSetFreeHintsCallback(linenoiseFreeHintsCallback *callback);
+
+#endif
+
+/*
+ * Prompts for input using the given string as the input
+ * prompt. Returns when the user has tapped ENTER or (on an empty
+ * line) EOF (Ctrl-D on Unix, Ctrl-Z on Windows). Returns either
+ * a copy of the entered string (for ENTER) or NULL (on EOF).  The
+ * caller owns the returned string and must eventually free() it.
+ */
+char *linenoise(const char *prompt);
+
+/**
+ * Like linenoise() but starts with an initial buffer.
+ */
+char *linenoiseWithInitial(const char *prompt, const char *initial);
+
+/**
+ * Clear the screen.
+ */
+void linenoiseClearScreen(void);
+
+/*
+ * Adds a copy of the given line of the command history.
+ */
+int linenoiseHistoryAdd(const char *line);
+
+/*
+ * Sets the maximum length of the command history, in lines.
+ * If the history is currently longer, it will be trimmed,
+ * retaining only the most recent entries. If len is 0 or less
+ * then this function does nothing.
+ */
+int linenoiseHistorySetMaxLen(int len);
+
+/*
+ * Returns the current maximum length of the history, in lines.
+ */
+int linenoiseHistoryGetMaxLen(void);
+
+/*
+ * Saves the current contents of the history to the given file.
+ * Returns 0 on success.
+ */
+int linenoiseHistorySave(const char *filename);
+
+/*
+ * Replaces the current history with the contents
+ * of the given file.  Returns 0 on success.
+ */
+int linenoiseHistoryLoad(const char *filename);
+
+/*
+ * Frees all history entries, clearing the history.
+ */
+void linenoiseHistoryFree(void);
+
+/*
+ * Returns a pointer to the list of history entries, writing its
+ * length to *len if len is not NULL. The memory is owned by linenoise
+ * and must not be freed.
+ */
+char **linenoiseHistory(int *len);
+
+/*
+ * Returns the number of display columns in the current terminal.
+ */
+int linenoiseColumns(void);
+
+/**
+ * Enable or disable multiline mode (disabled by default)
+ */
+void linenoiseSetMultiLine(int enableml);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LINENOISE_H */