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70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
/* ----------------------------------------------------------------------------
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Copyright (c) 2021, Daan Leijen
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This is free software; you can redistribute it and/or modify it
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under the terms of the MIT License. A copy of the license can be
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found in the "LICENSE" file at the root of this distribution.
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-----------------------------------------------------------------------------*/
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#pragma once
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#ifndef IC_ATTR_H
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#define IC_ATTR_H
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#include "common.h"
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#include "stringbuf.h"
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//-------------------------------------------------------------
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// text attributes
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//-------------------------------------------------------------
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#define IC_ON (1)
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#define IC_OFF (-1)
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#define IC_NONE (0)
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// try to fit in 64 bits
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// note: order is important for some compilers
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// note: each color can actually be 25 bits
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typedef union attr_s {
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struct {
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unsigned int color:28;
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signed int bold:2;
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signed int reverse:2;
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unsigned int bgcolor:28;
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signed int underline:2;
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signed int italic:2;
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} x;
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uint64_t value;
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} attr_t;
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ic_private attr_t attr_none(void);
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ic_private attr_t attr_default(void);
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ic_private attr_t attr_from_color( ic_color_t color );
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ic_private bool attr_is_none(attr_t attr);
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ic_private bool attr_is_eq(attr_t attr1, attr_t attr2);
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ic_private attr_t attr_update_with( attr_t attr, attr_t newattr );
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ic_private attr_t attr_from_sgr( const char* s, ssize_t len);
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ic_private attr_t attr_from_esc_sgr( const char* s, ssize_t len);
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//-------------------------------------------------------------
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// attribute buffer used for rich rendering
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//-------------------------------------------------------------
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struct attrbuf_s;
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typedef struct attrbuf_s attrbuf_t;
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ic_private attrbuf_t* attrbuf_new( alloc_t* mem );
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ic_private void attrbuf_free( attrbuf_t* ab ); // ab can be NULL
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ic_private void attrbuf_clear( attrbuf_t* ab ); // ab can be NULL
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ic_private ssize_t attrbuf_len( attrbuf_t* ab); // ab can be NULL
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ic_private const attr_t* attrbuf_attrs( attrbuf_t* ab, ssize_t expected_len );
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ic_private ssize_t attrbuf_append_n( stringbuf_t* sb, attrbuf_t* ab, const char* s, ssize_t len, attr_t attr );
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ic_private void attrbuf_set_at( attrbuf_t* ab, ssize_t pos, ssize_t count, attr_t attr );
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ic_private void attrbuf_update_at( attrbuf_t* ab, ssize_t pos, ssize_t count, attr_t attr );
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ic_private void attrbuf_insert_at( attrbuf_t* ab, ssize_t pos, ssize_t count, attr_t attr );
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ic_private attr_t attrbuf_attr_at( attrbuf_t* ab, ssize_t pos );
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ic_private void attrbuf_delete_at( attrbuf_t* ab, ssize_t pos, ssize_t count );
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#endif // IC_ATTR_H
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