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/*
* $Id: util.h,v 1.27 2005/10/22 05:50:13 sfeam Exp $
*/
/* GNUPLOT - util.h */
/*[
* Copyright 1986 - 1993, 1998, 2004 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#ifndef GNUPLOT_UTIL_H
# define GNUPLOT_UTIL_H
#include "gp_types.h"
#include "stdfn.h" /* for size_t */
/* special token number meaning 'do not draw the "caret"', for
* int_error and friends: */
#define NO_CARET (-1)
/* token number meaning 'the error was in the datafile, not the
command line' */
#define DATAFILE (-2)
/* TRUE if command just typed; becomes FALSE whenever we
* send some other output to screen. If FALSE, the command line
* will be echoed to the screen before the ^ error message.
*/
extern TBOOLEAN screen_ok;
/* decimal sign */
extern char *decimalsign;
extern const char *current_prompt; /* needed by is_error() and friends */
/* Functions exported by util.c: */
/* Command parsing helpers: */
#if 0 /* UNUSED */
int chr_in_str __PROTO((int, int));
#endif
int equals __PROTO((int, const char *));
int almost_equals __PROTO((int, const char *));
int isstring __PROTO((int));
int isanumber __PROTO((int));
int isletter __PROTO((int));
int is_definition __PROTO((int));
void copy_str __PROTO((char *, int, int));
size_t token_len __PROTO((int));
void quote_str __PROTO((char *, int, int));
void capture __PROTO((char *, int, int, int));
void m_capture __PROTO((char **, int, int));
void m_quote_capture __PROTO((char **, int, int));
char *try_to_get_string __PROTO((void));
void parse_esc __PROTO((char *));
int type_udv __PROTO((int));
#ifdef GP_STRING_VARS
char *gp_stradd __PROTO((const char *, const char *));
#define isstringvalue(c_token) (isstring(c_token) || type_udv(c_token)==STRING)
#else
#define isstringvalue(c_token) isstring(c_token)
#endif
/* HBB 20010726: IMHO this one belongs into alloc.c: */
char *gp_strdup __PROTO((const char *));
/* HBB 20020405: moved this here, from axis.[ch] */
void gprintf __PROTO((char *, size_t, char *, double, double));
/* Error message handling */
#if defined(VA_START) && defined(STDC_HEADERS)
void os_error __PROTO((int, const char *, ...));
void int_error __PROTO((int, const char *, ...));
void int_warn __PROTO((int, const char *, ...));
void graph_error __PROTO((const char *, ...));
#else
void os_error __PROTO(());
void int_error __PROTO(());
void int_warn __PROTO(());
void graph_error __PROTO(());
#endif
/* Helper functions for help_command() */
/* FIXME HBB 20010726: should be moved to where help_comamnd() is, and
* made static. Currently, that's command.c, but it should probably
* move to help.c, instead. */
void lower_case __PROTO((char *));
void squash_spaces __PROTO((char *));
TBOOLEAN existdir __PROTO((const char *));
char *getusername __PROTO((void));
#endif /* GNUPLOT_UTIL_H */
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