degesch: formatter: simplifications
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6deb471423
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188
degesch.c
188
degesch.c
@ -1473,6 +1473,10 @@ serialize_configuration (struct app_context *ctx, struct str *output)
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/// Bright versions of the basic color set
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#define COLOR_BRIGHT(x) (COLOR_ ## x + 8)
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/// Builds a color pair for 256-color terminals with a 16-color backup value
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#define COLOR_256(name, c256) \
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(COLOR_ ## name) & 0xFFFF | ((c256 << 16) & 0xFFFF)
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static struct
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{
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bool initialized; ///< Terminal is available
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@ -1559,6 +1563,10 @@ free_terminal (void)
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del_curterm (cur_term);
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}
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// NOTE: commonly terminals have 8 colors (worst), 16 colors (allows brightness
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// without the bold/blink attributes), 88 colors (the same plus a 4^3 RGB cube
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// and a few shades of gray), or 256 colors (best)
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static int
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index_to_terminal_palette (int color)
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{
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@ -1706,6 +1714,21 @@ init_colors (struct app_context *ctx)
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g_log_message_real = log_message_attributed;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// A little tool that tries to make the most of the terminal's capabilities
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// to set up text attributes. It mostly targets just terminal emulators as that
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// is what people are using these days. At least no stupid ncurses limits us
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// with color pairs.
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enum
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{
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ATTRIBUTE_BOLD = 1 << 0,
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ATTRIBUTE_ITALIC = 1 << 1,
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ATTRIBUTE_UNDERLINE = 1 << 2,
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ATTRIBUTE_INVERSE = 1 << 3
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};
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// --- Output formatter --------------------------------------------------------
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// This complicated piece of code makes attributed text formatting simple.
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@ -1728,13 +1751,7 @@ enum formatter_item_type
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FORMATTER_ITEM_ATTR, ///< Formatting attributes
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FORMATTER_ITEM_FG_COLOR, ///< Foreground color
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FORMATTER_ITEM_BG_COLOR, ///< Background color
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// These are internal, for mIRC formatting only so far:
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FORMATTER_ITEM_BOLD, ///< Bold
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FORMATTER_ITEM_ITALIC, ///< Italic
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FORMATTER_ITEM_UNDERLINE, ///< Underline
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FORMATTER_ITEM_INVERSE ///< Inverse
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FORMATTER_ITEM_SIMPLE ///< For mIRC formatting only so far
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};
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struct formatter_item
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@ -1786,65 +1803,28 @@ formatter_free (struct formatter *self)
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formatter_item_destroy (iter);
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}
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static struct formatter_item *
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formatter_add_blank (struct formatter *self)
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static void
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formatter_add_item (struct formatter *self, struct formatter_item template_)
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{
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if (template_.type != FORMATTER_ITEM_TEXT && self->ignore_new_attributes)
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return;
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if (template_.text)
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template_.text = xstrdup (template_.text);
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struct formatter_item *item = formatter_item_new ();
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*item = template_;
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LIST_APPEND_WITH_TAIL (self->items, self->items_tail, item);
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return item;
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}
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static void
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formatter_add_text (struct formatter *self, const char *text)
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{
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struct formatter_item *item = formatter_add_blank (self);
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item->type = FORMATTER_ITEM_TEXT;
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item->text = xstrdup (text);
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}
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#define FORMATTER_ADD_ITEM(self, type_, ...) formatter_add_item ((self), \
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(struct formatter_item) { .type = FORMATTER_ITEM_ ## type_, __VA_ARGS__ })
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static void
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formatter_add_reset (struct formatter *self)
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{
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if (self->ignore_new_attributes)
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return;
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struct formatter_item *item = formatter_add_blank (self);
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item->type = FORMATTER_ITEM_ATTR;
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item->attribute = ATTR_RESET;
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}
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static void
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formatter_add_attr (struct formatter *self, int attr_id)
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{
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if (self->ignore_new_attributes)
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return;
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struct formatter_item *item = formatter_add_blank (self);
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item->type = FORMATTER_ITEM_ATTR;
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item->attribute = attr_id;
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}
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static void
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formatter_add_fg_color (struct formatter *self, int color)
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{
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if (self->ignore_new_attributes)
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return;
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struct formatter_item *item = formatter_add_blank (self);
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item->type = FORMATTER_ITEM_FG_COLOR;
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item->color = color;
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}
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static void
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formatter_add_bg_color (struct formatter *self, int color)
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{
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if (self->ignore_new_attributes)
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return;
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struct formatter_item *item = formatter_add_blank (self);
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item->type = FORMATTER_ITEM_BG_COLOR;
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item->color = color;
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}
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#define FORMATTER_ADD_RESET(self) \
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FORMATTER_ADD_ITEM ((self), ATTR, .attribute = ATTR_RESET)
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#define FORMATTER_ADD_TEXT(self, text_) \
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FORMATTER_ADD_ITEM ((self), TEXT, .text = (text_))
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#define FORMATTER_ADD_SIMPLE(self, attribute_) \
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FORMATTER_ADD_ITEM ((self), SIMPLE, .attribute = ATTRIBUTE_ ## attribute_)
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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@ -1859,41 +1839,26 @@ enum
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// We use estimates from the 16 color terminal palette, or the 256 color cube,
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// which is not always available. The mIRC orange colour is only in the cube.
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// NOTE: commonly terminals have 8 colors (worst), 16 colors (allows brightness
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// without the bold/blink attributes), 88 colors (the same plus a 4^3 RGB cube
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// and a few shades of gray), or 256 colors (best)
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/// Builds a color pair for 256-color terminals with a 16-color backup value
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#define FORMATTER_COLOR(name, c256) \
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(COLOR_ ## name) & 0xFFFF | ((c256 << 16) & 0xFFFF)
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static const int g_mirc_to_term[] =
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static const int g_mirc_to_terminal[] =
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{
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[MIRC_WHITE] = FORMATTER_COLOR (BRIGHT (WHITE), 231),
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[MIRC_BLACK] = FORMATTER_COLOR (BLACK, 16),
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[MIRC_BLUE] = FORMATTER_COLOR (BLUE, 19),
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[MIRC_GREEN] = FORMATTER_COLOR (GREEN, 34),
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[MIRC_L_RED] = FORMATTER_COLOR (BRIGHT (RED), 196),
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[MIRC_RED] = FORMATTER_COLOR (RED, 124),
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[MIRC_PURPLE] = FORMATTER_COLOR (MAGENTA, 127),
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[MIRC_ORANGE] = FORMATTER_COLOR (BRIGHT (YELLOW), 214),
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[MIRC_YELLOW] = FORMATTER_COLOR (BRIGHT (YELLOW), 226),
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[MIRC_L_GREEN] = FORMATTER_COLOR (BRIGHT (GREEN), 46),
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[MIRC_CYAN] = FORMATTER_COLOR (CYAN, 37),
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[MIRC_L_CYAN] = FORMATTER_COLOR (BRIGHT (CYAN), 51),
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[MIRC_L_BLUE] = FORMATTER_COLOR (BRIGHT (BLUE), 21),
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[MIRC_L_PURPLE] = FORMATTER_COLOR (BRIGHT (MAGENTA),201),
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[MIRC_GRAY] = FORMATTER_COLOR (BRIGHT (BLACK), 244),
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[MIRC_L_GRAY] = FORMATTER_COLOR (WHITE, 252),
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[MIRC_WHITE] = COLOR_256 (BRIGHT (WHITE), 231),
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[MIRC_BLACK] = COLOR_256 (BLACK, 16),
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[MIRC_BLUE] = COLOR_256 (BLUE, 19),
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[MIRC_GREEN] = COLOR_256 (GREEN, 34),
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[MIRC_L_RED] = COLOR_256 (BRIGHT (RED), 196),
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[MIRC_RED] = COLOR_256 (RED, 124),
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[MIRC_PURPLE] = COLOR_256 (MAGENTA, 127),
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[MIRC_ORANGE] = COLOR_256 (BRIGHT (YELLOW), 214),
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[MIRC_YELLOW] = COLOR_256 (BRIGHT (YELLOW), 226),
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[MIRC_L_GREEN] = COLOR_256 (BRIGHT (GREEN), 46),
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[MIRC_CYAN] = COLOR_256 (CYAN, 37),
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[MIRC_L_CYAN] = COLOR_256 (BRIGHT (CYAN), 51),
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[MIRC_L_BLUE] = COLOR_256 (BRIGHT (BLUE), 21),
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[MIRC_L_PURPLE] = COLOR_256 (BRIGHT (MAGENTA),201),
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[MIRC_GRAY] = COLOR_256 (BRIGHT (BLACK), 244),
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[MIRC_L_GRAY] = COLOR_256 (WHITE, 252),
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};
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static void
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formatter_add_simple (struct formatter *self, enum formatter_item_type type)
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{
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if (!self->ignore_new_attributes)
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formatter_add_blank (self)->type = type;
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}
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static const char *
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formatter_parse_mirc_color (struct formatter *self, const char *s)
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{
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@ -1904,7 +1869,7 @@ formatter_parse_mirc_color (struct formatter *self, const char *s)
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if (isdigit_ascii (*s))
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fg = fg * 10 + (*s++ - '0');
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if (fg >= 0 && fg < 16)
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formatter_add_fg_color (self, g_mirc_to_term[fg]);
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FORMATTER_ADD_ITEM (self, FG_COLOR, .color = g_mirc_to_terminal[fg]);
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if (*s != ',' || !isdigit_ascii (s[1]))
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return s;
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@ -1913,7 +1878,7 @@ formatter_parse_mirc_color (struct formatter *self, const char *s)
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if (isdigit_ascii (s[1]))
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bg = bg * 10 + (*++s - '0');
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if (bg >= 0 && bg < 16)
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formatter_add_bg_color (self, g_mirc_to_term[bg]);
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FORMATTER_ADD_ITEM (self, BG_COLOR, .color = g_mirc_to_terminal[bg]);
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return s;
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}
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@ -1924,33 +1889,29 @@ formatter_parse_mirc (struct formatter *self, const char *s)
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struct str buf;
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str_init (&buf);
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formatter_add_reset (self);
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FORMATTER_ADD_RESET (self);
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char c;
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while ((c = *s++))
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{
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if (buf.len && c < 0x20)
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{
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formatter_add_text (self, buf.str);
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FORMATTER_ADD_TEXT (self, buf.str);
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str_reset (&buf);
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}
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#define SIMPLE(type) formatter_add_simple (self, FORMATTER_ITEM_ ## type)
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switch (c)
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{
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case '\x02': SIMPLE (BOLD); break;
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case '\x1d': SIMPLE (ITALIC); break;
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case '\x1f': SIMPLE (UNDERLINE); break;
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case '\x16': SIMPLE (INVERSE); break;
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#undef SIMPLE
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case '\x02': FORMATTER_ADD_SIMPLE (self, BOLD); break;
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case '\x1d': FORMATTER_ADD_SIMPLE (self, ITALIC); break;
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case '\x1f': FORMATTER_ADD_SIMPLE (self, UNDERLINE); break;
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case '\x16': FORMATTER_ADD_SIMPLE (self, INVERSE); break;
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case '\x03':
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s = formatter_parse_mirc_color (self, s);
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break;
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case '\x0f':
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formatter_add_reset (self);
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FORMATTER_ADD_RESET (self);
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break;
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default:
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str_append_c (&buf, c);
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@ -1958,10 +1919,10 @@ formatter_parse_mirc (struct formatter *self, const char *s)
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}
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if (buf.len)
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formatter_add_text (self, buf.str);
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FORMATTER_ADD_TEXT (self, buf.str);
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str_free (&buf);
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formatter_add_reset (self);
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FORMATTER_ADD_RESET (self);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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@ -1994,22 +1955,21 @@ restart:
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str_append (buf, s);
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free (s);
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break;
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case 'm':
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formatter_parse_mirc (self, va_arg (*ap, char *));
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break;
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case 'a':
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formatter_add_attr (self, va_arg (*ap, int));
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FORMATTER_ADD_ITEM (self, ATTR, .attribute = va_arg (*ap, int));
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break;
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case 'c':
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formatter_add_fg_color (self, va_arg (*ap, int));
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FORMATTER_ADD_ITEM (self, FG_COLOR, .color = va_arg (*ap, int));
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break;
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case 'C':
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formatter_add_bg_color (self, va_arg (*ap, int));
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FORMATTER_ADD_ITEM (self, BG_COLOR, .color = va_arg (*ap, int));
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break;
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case 'r':
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formatter_add_reset (self);
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FORMATTER_ADD_RESET (self);
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break;
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default:
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@ -2044,7 +2004,7 @@ formatter_add (struct formatter *self, const char *format, ...)
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}
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if (buf.len)
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{
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formatter_add_text (self, buf.str);
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FORMATTER_ADD_TEXT (self, buf.str);
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str_reset (&buf);
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}
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@ -2052,7 +2012,7 @@ formatter_add (struct formatter *self, const char *format, ...)
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}
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if (buf.len)
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formatter_add_text (self, buf.str);
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FORMATTER_ADD_TEXT (self, buf.str);
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str_free (&buf);
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va_end (ap);
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