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term.h
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term.h
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/*
* Copyright (c) Kristaps Dzonsons <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This file is for direct inclusion into term.c. It allows an easy
* place to make compile-term overrides of default styles.
*/
/*
* Styles
* ======
*
* Begin with text styles. Each style should be formatted as follows:
*
* static const struct sty sty_STYLE = {
* italic?, strike?, bold?, under?, bgcolour, colour, override?
* };
*
* Italic, strike, bold, and under may be zero or non-zero numbers. If
* non-zero, the given style is applied and is inherited by all child
* styles.
*
* Override is a bit-mask of styles that are overridden. If 1 is set,
* the underline is overridden; if 2, the bold.
*
* Bgcolour and colour may be zero or an 8-bit ANSI colour escape code
* for standard or high-intensity colours, e.g., 30 = black, 36 = cyan,
* 91 = bright red. Non-conforming values are ignored. See
* <https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit>. These
* are not inherited by child styles.
*
* Please note that if NO_COLOR is specified during run-time, all of the
* colour codes will be stripped. When customising this, please make
* sure that your style will work both with colours and without.
*/
/* For inserted content. Common parent style. */
static const struct sty sty_chng_ins = { 0, 0, 0, 0, 44, 0, 0 };
/* For deleted content. Common parent style. */
static const struct sty sty_chng_del = { 0, 0, 0, 0, 41, 0, 0 };
/* Image: >< */
static const struct sty sty_img = { 0, 0, 1, 0, 0, 93, 1 };
/* Box around image link (in sty_img):  */
static const struct sty sty_imgbox = { 0, 0, 0, 0, 0, 37, 2 };
/* Image link text (in sty_img):  */
static const struct sty sty_imgurl = { 0, 0, 0, 1, 0, 32, 2 };
/* Footnote reference (as a number): >[^ref]< */
static const struct sty sty_fref = { 0, 0, 1, 0, 0, 93, 1 };
/* In-line code: >`foo(void)`< */
static const struct sty sty_codespan = { 0, 0, 1, 0, 0, 94, 0 };
/* Block code: ```foo(void)```< */
static const struct sty sty_blockcode = { 0, 0, 1, 0, 0, 0, 0 };
/* Horizontal line: >***< */
static const struct sty sty_hrule = { 0, 0, 0, 0, 0, 37, 0 };
/* Block HTML: ><html></html>< */
static const struct sty sty_blockhtml = { 0, 0, 0, 0, 0, 37, 0 };
/* In-line HTML: ><span>< */
static const struct sty sty_rawhtml = { 0, 0, 0, 0, 0, 37, 0 };
/* Strike-through: >~~foo~~< */
static const struct sty sty_strike = { 0, 1, 0, 0, 0, 0, 0 };
/* Emphasis: >*foo*< */
static const struct sty sty_emph = { 1, 0, 0, 0, 0, 0, 0 };
/* Highlight: >==foo==< */
static const struct sty sty_highlight = { 0, 0, 1, 0, 0, 0, 0 };
/* Double-emphasis: >**foo**< */
static const struct sty sty_d_emph = { 0, 0, 1, 0, 0, 0, 0 };
/* Triple emphasis: >***foo***< */
static const struct sty sty_t_emph = { 1, 0, 1, 0, 0, 0, 0 };
/* Link: >[text](link)< */
static const struct sty sty_link = { 0, 0, 0, 1, 0, 32, 0 };
/* Link text (in sty_link): [>text<](link) */
static const struct sty sty_linkalt = { 0, 0, 1, 0, 0, 93, 1|2 };
/* Standalone link: >https://link< */
static const struct sty sty_autolink = { 0, 0, 0, 1, 0, 32, 0 };
/* Header: >## Header< */
static const struct sty sty_header = { 0, 0, 1, 0, 0, 0, 0 };
/* First header (in sty_header): ># Header< */
static const struct sty sty_header_1 = { 0, 0, 0, 0, 0, 91, 0 };
/* Non-first header (in sty_header): >### Header< */
static const struct sty sty_header_n = { 0, 0, 0, 0, 0, 36, 0 };
/* Footnote block: >[^ref]: foo bar< */
static const struct sty sty_foot = { 0, 0, 0, 0, 0, 37, 0 };
/* Footnote prefix (in sty_foot, as a number): >[^ref]<: foo bar */
static const struct sty sty_fdef_pfx = { 0, 0, 0, 0, 0, 92, 1 };
/* Metadata key: >key:< val */
static const struct sty sty_meta_key = { 0, 0, 0, 0, 0, 37, 0 };
/* Entity (if not valid): >&#badent;< */
static const struct sty sty_bad_ent = { 0, 0, 0, 0, 0, 37, 0 };
/* Definition list data prefix (see pfx_dli_1): foo \n >:< bar */
static const struct sty sty_dli_pfx = { 0, 0, 0, 0, 0, 93, 0 };
/* List prefix (see pfx_li_1): >1.< foo */
static const struct sty sty_li_pfx = { 0, 0, 0, 0, 0, 93, 0 };
/* Block quote prefix (see pfx_bkqt): >|< foo */
static const struct sty sty_bkqt_pfx = { 0, 0, 0, 0, 0, 93, 0 };
/* Block code prefix (see pfx_bkcd): ``` >|< void \n >|< main``` */
static const struct sty sty_bkcd_pfx = { 0, 0, 0, 0, 0, 94, 0 };
/* Table separator (see ifx_tbl_col, ifx_tbl_mcol, ifx_tbl_row). */
static const struct sty sty_tbl = { 0, 0, 0, 0, 0, 93, 0 };
/*
* Prefixes
* ========
*
* What follows are hard-coded prefixes. These appear on the left of
* the output. Each prefix is arranged as:
*
* static const struct pfx pfx_STYLE = { text, columns };
*
* The text is a quoted string that will be inserted as-is. It may
* contain UTF-8 values. It may be NULL *only* if the documentation
* specifically says that the value is ignored.
*
* Columns is the number of terminal columns that the prefix fills. If
* this is wrong, it will throw off line wrapping. XXX: this may be
* dynamically computed in later versions of lowodwn.
*
* If the prefix text is ignored, the columns are the minimum: for
* example, an ordered list may have numbers >100, which with the ". "
* would be greater than 4, if 4 is given as the columns. However, at
* least 4 spaces would be printed, even if it were "1. " -> " 1. ".
*/
/* Block code (see sty_bkcd_pfx). */
static const struct pfx pfx_bkcd = { " │ ", 4 };
/* Block quote (see sty_bkqt_pfx). */
static const struct pfx pfx_bkqt = { " │ ", 4 };
/* Definition list data, first line (see sty_dli_pfx). */
static const struct pfx pfx_dli_1 = { " : ", 4 };
/* Definition list data, subsequent line (see sty_dli_pfx). */
static const struct pfx pfx_dli_n = { " ", 4 };
/* Minimum ordered list item, first line (see sty_li_pfx). Text ignored. */
static const struct pfx pfx_oli_1 = { NULL, 4 };
/* Unordered list item, first line (see sty_li_pfx). */
static const struct pfx pfx_uli_1 = { " · ", 4 };
/* Unordered, checked list data, first line (see sty_li_pfx). */
static const struct pfx pfx_uli_c1 = { " ☑ ", 4 };
/* Unordered, unchecked list data, first line (see sty_li_pfx). */
static const struct pfx pfx_uli_nc1 = { " ☐ ", 4 };
/* List items, subsequent lines (see sty_li_pfx). */
static const struct pfx pfx_li_n = { " ", 4 };
/* Minimum footnote prefix, first line (see sty_fdef_pfx). Text ignored. */
static const struct pfx pfx_fdef_1 = { NULL, 4 };
/* Footnote prefix, subsequent lines (see sty_fdef_pfx). */
static const struct pfx pfx_fdef_n = { " ", 4 };
/* Header first prefix (see sty_header_1). */
static const struct pfx pfx_header_1 = { "", 0 };
/* Header non-first prefix, one per head level (see sty_header_n). */
static const struct pfx pfx_header_n = { "#", 1 };
/*
* Infixes
* =======
*
* These are character strings that appear throughout text. They may
* consist of UTF-8 characters. NULL is not allowed.
*/
/* Footnote block header (see sty_foot). */
static const char *ifx_foot = "─";
/* Superscript. */
static const char *ifx_super = "^";
/* Metadata key (see sty_meta_key). */
static const char *ifx_meta_key = ": ";
/* Horizontal rule (repeats until covering full space). */
static const char *ifx_hrule = "─";
/* Image link box left-box (see sty_imgbox). */
static const char *ifx_imgbox_left = "[🖻 ";
/* Image link box right-box (see sty_imgbox). */
static const char *ifx_imgbox_right = "]";
/* Image link box separator (see sty_imgbox). */
static const char *ifx_imgbox_sep = " ";
/* Link separator. */
static const char *ifx_link_sep = " ";
/* Footnote reference left-box (see sty_fref). */
static const char *ifx_fref_left = "[";
/* Footnote reference right-box (see sty_fref). */
static const char *ifx_fref_right = "]";
/* Table column separator (see sty_tbl). */
static const char *ifx_tbl_col = "│";
/* Table header row separator (see sty_tbl). */
static const char *ifx_tbl_row = "─";
/* Table header row cross-separator (see sty_tbl). */
static const char *ifx_tbl_mcol = "┼";