TextWrap.qm.dox.h

// -*- mode: c++; indent-tabs-mode: nil -*-
 
/*  TextWrap.qm Copyright 2023 Qore Technologies, s.r.o.
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom the
    Software is furnished to do so, subject to the following conditions:
 
    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.
 
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.
*/
 
// minimum required Qore version
 
 
 
 
namespace Init {
    init();
 
};
 
namespace TextWrap {
 
// Hardcode the recognized whitespace characters to the US-ASCII
// whitespace characters.  The main reason for doing this is that
// some Unicode spaces (like \u00a0) are non-breaking whitespaces.
const c_whitespace = "\t\n\013\014\r ";
 
// -- Private helpers ---------------------------------------------------
 
any sum (list la, *any start);
 
 
string translate (string text, hash table);
 
 
string xsprintf (string fmt, hash args);
 
 
// -- Public helpers ----------------------------------------------------
 
 
 string expandtabs (string text, int tabsize = 8);
 
 
// -- Public functionality ----------------------------------------------
 
class TextWrapper {
 
public:
        int width = 70;
        string initial_indent = "";
        string subsequent_indent = "";
        bool expand_tabs = True;
        bool replace_whitespace = True;
        bool fix_sentence_endings = False;
        bool break_long_words = True;
        bool drop_whitespace = True;
        bool break_on_hyphens = True;
        int tabsize = 8;
        int max_lines;
        string placeholder = ' [...]';
 
protected:
        hash whitespace_trans;
        string wordsep_re;
        string wordsep_simple_re;
        string sentence_end_re;
 
public:
 
    constructor (*hash opts);
 
 
    // -- Private methods -----------------------------------------------
    // (possibly useful for subclasses to override)
 
protected:
     string _munge_whitespace (string text);
public:
 
 
    list _split (string text);
 
 
protected:
     _fix_sentence_endings (reference chunks);
public:
 
 
protected:
     _handle_long_word (reference reversed_chunks, reference cur_line, int cur_len, int width);
public:
 
 
protected:
     list _wrap_chunks (list chunks);
public:
 
 
protected:
     list _split_chunks (string text);
public:
 
 
    // -- Public interface ----------------------------------------------
 
 
     list wrap (string text);
 
 
     string fill (string text);
};
 
// -- Convenience interface ---------------------------------------------
 
 
 list wrap (string text, int width=70, *hash opts);
 
 
 
 string fill (string text, int width=70, *hash opts);
 
 
 
 string shorten (string text, int width, *hash opts);
 
 
// -- Loosely related functionality -------------------------------------
 
const c_whitespace_only_re = '^[ \t]+$';
const c_leading_whitespace_re = '(^[ \t]*)(?:[^ \t\n])';
 
 
 string dedent (string text);
 
 
 
 string indent (string text, string prefix, *code predicate);
 
 
}; // namespace TextWrap
 
// vim:et:sw=4:ts=4:sts=4: