boxes/src/boxes.in.h

/*
 * boxes - Command line filter to draw/remove ASCII boxes around text
 * Copyright (c) 1999-2021 Thomas Jensen and the boxes contributors
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License, version 2, as published
 * by the Free Software Foundation.
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 */

/*
 * Project-wide globals and data structures
 */

#ifndef BOXES_H
#define BOXES_H

/* #define DEBUG 1 */
/* #define REGEXP_DEBUG 1 */
/* #define PARSER_DEBUG 1 */
/* #define LEXER_DEBUG 1 */

#include <stdio.h>
#include <unitypes.h>
#include "regulex.h"
#include "shape.h"



#define PROJECT "boxes"                  /* name of program */
#define VERSION "--BVERSION--"           /* current release of project */
#define GLOBALCONF "--GLOBALCONF--"      /* name of system-wide config file */


/*
 *  default settings of all kinds (THIS PARAGRAPH MAY BE EDITED)
 */
#define DEF_TABSTOP     8                /* default tab stop distance (part of -t) */
#define DEF_INDENTMODE  'b'              /* indent box, not text by default */

/*
 *  max. allowed tab stop distance
 */
#define MAX_TABSTOP     16

/*
 *  max. supported line length in bytes
 *  This is how many characters of a line will be read. Anything beyond
 *  will be discarded. The line feed character at the end does not count.
 *  (This should have been done via sysconf(), but I didn't do it in order
 *  to ease porting to non-unix platforms.)
 */
#if defined(LINE_MAX_BYTES) && (LINE_MAX_BYTES < 2048)
#undef LINE_MAX_BYTES
#endif
#ifndef LINE_MAX_BYTES
#define LINE_MAX_BYTES        16382
#endif


#ifdef DEBUG
    #define __TJ(s) fprintf (stderr, s);
#else
    #define __TJ(s) /**/
#endif


#define BTOP 0                           /* for use with sides */
#define BRIG 1
#define BBOT 2
#define BLEF 3


typedef struct {
    char       *search;
    char       *repstr;
    pcre2_code *prog;                    /* compiled search pattern */
    int         line;                    /* line of definition in config file */
    char        mode;                    /* 'g' or 'o' */
} reprule_t;


typedef struct {
    char      *name;
    char      *author;                   /* creator of the configuration file entry */
    char      *designer;                 /* creator of the original ASCII artwork */
    char      *created;                  /* date created, free format */
    char      *revision;                 /* revision number of design */
    char      *revdate;                  /* date of current revision */
    char      *sample;
    char       indentmode;               /* 'b', 't', or 'n' */
    sentry_t   shape[ANZ_SHAPES];
    size_t     maxshapeheight;           /* height of highest shape in design */
    size_t     minwidth;
    size_t     minheight;
    int        padding[ANZ_SIDES];
    char      *tags;
    char      *defined_in;               /* path to config file where this was defined */

    reprule_t *current_rule;
    reprule_t *reprules;                 /* applied when drawing a box */
    size_t     anz_reprules;
    reprule_t *revrules;                 /* applied upon removal of a box */
    size_t     anz_revrules;
} design_t;

extern design_t *designs;
extern int anz_designs;


typedef struct {                         /* Command line options: */
    int       l;                         /** list available designs */
    char     *f;                         /** the string specified as argument to -f ; config file path */
    int       mend;                      /** 1 if -m is given, 2 in 2nd loop */
    int       q;                         /** special handling of web UI needs */
    int       r;                         /** remove box from input */
    int       tabstop;                   /** tab stop distance */
    char      tabexp;                    /** tab expansion mode (for leading tabs) */
    int       padding[ANZ_SIDES];        /** in spaces or lines resp. */
    design_t *design;                    /** currently used box design */
    int       design_choice_by_user;     /** true if design was chosen by user */
    char     *cld;                       /** commandline design definition, -c */
    long      reqwidth;                  /** requested box width (-s) */
    long      reqheight;                 /** requested box height (-s) */
    char      valign;                    /** text position inside box */
    char      halign;                    /** ( h[lcr]v[tcb] )         */
    char      indentmode;                /** 'b', 't', 'n', or '\0' */
    char      justify;                   /** 'l', 'c', 'r', or '\0' */
    int       killblank;                 /** -1 if not set */
    char     *encoding;                  /** character encoding override for input and output text */
    FILE     *infile;                    /** where we get our input */
    FILE     *outfile;                   /** where we put our output */
} opt_t;

extern opt_t opt;


typedef struct {
    size_t    len;                       /* length of visible text in columns (visible character positions in a text terminal), which is the same as the length of the 'text' field */
    char     *text;                      /* ASCII line content, tabs expanded, ansi escapes removed, multi-byte chars replaced with one or more 'x' */
    size_t    invis;                     /* number of invisble columns/characters (part of an ansi sequence) */

    uint32_t *mbtext;                    /* multi-byte (original) line content, tabs expanded. We use UTF-32 in order to enable pointer arithmetic. */
    size_t    num_chars;                 /* total number of characters in mbtext, visible + invisible */
    uint32_t *mbtext_org;                /* mbtext as originally allocated, so that we can free it again */

    size_t   *tabpos;                    /* tab positions in expanded work strings, or NULL if not needed */
    size_t    tabpos_len;                /* number of tabs in a line */
    size_t    num_leading_blanks;        /* number of spaces at the start of the line after justification */
    size_t   *posmap;                    /* for each character in `text`, position of corresponding char in `mbtext`. Needed for box removal. */
} line_t;


#ifndef FILE_LEXER_L
typedef struct {
    line_t *lines;
    size_t  anz_lines;                   /* number of entries in input */
    size_t  maxline;                     /* length of longest input line */
    size_t  indent;                      /* number of leading spaces found */
    int     final_newline;               /* true if the last line of input ends with newline */
} input_t;

#define INPUT_INITIALIZER {NULL, 0, 0, LINE_MAX_BYTES, 0}

extern input_t input;
#endif /*!FILE_LEXER_L*/


#endif /* BOXES_H */

/*EOF*/                                  /* vim: set cindent sw=4: */