299 lines
8.8 KiB
C
299 lines
8.8 KiB
C
/* $XTermId: html.c,v 1.19 2020/06/02 23:24:26 tom Exp $ */
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/*
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* Copyright 2018-2019,2020 Thomas E. Dickey
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* Copyright 2015,2018 Jens Schweikhardt
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*
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* All Rights Reserved
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name(s) of the above copyright
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* holders shall not be used in advertising or otherwise to promote the sale,
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* use or other dealings in this Software without prior written
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* authorization.
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*/
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#include <xterm.h>
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#include <version.h>
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#define MakeDim(color) \
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color = (unsigned short) ((2 * (unsigned) color) / 3)
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#define RGBPCT(c) \
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((double)c.red / 655.35), \
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((double)c.green / 655.35), \
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((double)c.blue / 655.35)
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static void dumpHtmlHeader(XtermWidget xw, FILE *fp);
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static void dumpHtmlScreen(XtermWidget xw, FILE *fp);
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static void dumpHtmlLine(XtermWidget xw, int row, FILE *fp);
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static void dumpHtmlFooter(XtermWidget, FILE *fp);
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static void writeStyle(XtermWidget, FILE *fp);
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void
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xtermDumpHtml(XtermWidget xw)
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{
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char *saveLocale;
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FILE *fp;
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TRACE(("xtermDumpHtml...\n"));
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saveLocale = xtermSetLocale(LC_NUMERIC, "C");
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fp = create_printfile(xw, ".xhtml");
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if (fp != 0) {
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dumpHtmlHeader(xw, fp);
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dumpHtmlScreen(xw, fp);
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dumpHtmlFooter(xw, fp);
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fclose(fp);
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}
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xtermResetLocale(LC_NUMERIC, saveLocale);
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TRACE(("...xtermDumpHtml done\n"));
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}
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static void
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dumpHtmlHeader(XtermWidget xw, FILE *fp)
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{
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fputs("<?xml version='1.0' encoding='UTF-8'?>\n", fp);
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fputs("<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN'\n", fp);
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fputs(" 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>\n", fp);
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fputs("<html xmlns='http://www.w3.org/1999/xhtml' lang='en' xml:lang='en'>\n", fp);
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fputs(" <head>\n", fp);
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fprintf(fp, " <meta name='generator' content='%s'/>\n", xtermVersion());
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fputs(" <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'/>\n", fp);
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fputs(" <link rel='Stylesheet' type='text/css' href='xterm.css'/>\n", fp);
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fputs(" <title>Xterm</title>\n", fp);
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writeStyle(xw, fp);
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fputs(" </head>\n", fp);
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fputs(" <body>\n", fp);
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fputs(" <div id='vt100'>\n", fp);
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fputs(" <pre>", fp);
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xevents(xw);
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}
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static void
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writeStyle(XtermWidget xw, FILE *fp)
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{
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TScreen *s = TScreenOf(xw);
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fputs(" <style type='text/css'>\n", fp);
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fputs(" body, pre { margin: 0 }\n", fp);
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fputs(" #vt100 {\n", fp);
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fputs(" float: left;\n", fp);
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fprintf(fp, " font-size: 12pt;\n");
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fprintf(fp, " border: %upx solid %s;\n", BorderWidth(xw),
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PixelToCSSColor(xw, BorderPixel(xw)));
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fprintf(fp, " padding: %dpx;\n", s->border);
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fprintf(fp, " background: %s\n", PixelToCSSColor(xw, xw->old_background));
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fprintf(fp, " }\n");
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fputs(" .ul { text-decoration: underline }\n", fp);
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fputs(" .bd { font-weight: bold }\n", fp);
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fputs(" .it { font-style: italic }\n", fp);
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fputs(" .st { text-decoration: line-through }\n", fp);
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fputs(" .lu { text-decoration: line-through underline }\n", fp);
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fputs(" </style>\n", fp);
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xevents(xw);
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}
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static void
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dumpHtmlScreen(XtermWidget xw, FILE *fp)
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{
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TScreen *s = TScreenOf(xw);
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int row;
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for (row = s->top_marg; row <= s->bot_marg; ++row) {
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dumpHtmlLine(xw, row, fp);
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}
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}
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/*
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* Note: initial and final space around values of class and style
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* attribute are deliberate. They make it easier for XPath
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* to test whether a particular name is among the attributes.
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* It allows expressions such as
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* [contains(@class, ' ul ')]
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* instead of the unwieldy
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* [contains(concat(' ', @class, ' '), ' ul ')]
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* The ev and od (for even and odd rows) values
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* avoid empty values when going back to old fg/bg.
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*/
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static void
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dumpHtmlLine(XtermWidget xw, int row, FILE *fp)
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{
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TScreen *s = TScreenOf(xw);
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char attrs[2][sizeof
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"<span class=' ev ul bd it st du ' style='color: rgb(100.00%, 100.00%, 100.00%); background: rgb(100.00%, 100.00%, 100.00%)'>"];
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int attr_index = 0;
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char *attr = &attrs[attr_index][0];
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int inx = ROW2INX(s, row);
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LineData *ld = getLineData(s, inx);
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int col;
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if (ld == 0)
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return;
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for (col = 0; col < MaxCols(s); col++) {
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XColor fgcolor, bgcolor;
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IChar chr = ld->charData[col];
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int slen = 0;
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fgcolor.pixel = xw->old_foreground;
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bgcolor.pixel = xw->old_background;
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#if OPT_ISO_COLORS
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if (ld->attribs[col] & FG_COLOR) {
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Pixel fg = extract_fg(xw, ld->color[col], ld->attribs[col]);
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#if OPT_DIRECT_COLOR
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if (ld->attribs[col] & ATR_DIRECT_FG)
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fgcolor.pixel = fg;
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else
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#endif
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fgcolor.pixel = s->Acolors[fg].value;
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}
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if (ld->attribs[col] & BG_COLOR) {
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Pixel bg = extract_bg(xw, ld->color[col], ld->attribs[col]);
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#if OPT_DIRECT_COLOR
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if (ld->attribs[col] & ATR_DIRECT_BG)
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bgcolor.pixel = bg;
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else
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#endif
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bgcolor.pixel = s->Acolors[bg].value;
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}
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#endif
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XQueryColor(xw->screen.display, xw->core.colormap, &fgcolor);
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XQueryColor(xw->screen.display, xw->core.colormap, &bgcolor);
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xevents(xw);
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if (ld->attribs[col] & BLINK) {
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/* White on red. */
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fgcolor.red = fgcolor.green = fgcolor.blue = 65535u;
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bgcolor.red = 65535u;
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bgcolor.green = bgcolor.blue = 0u;
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}
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#if OPT_WIDE_ATTRS
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if (ld->attribs[col] & ATR_FAINT) {
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MakeDim(fgcolor.red);
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MakeDim(fgcolor.green);
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MakeDim(fgcolor.blue);
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}
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#endif
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if (ld->attribs[col] & INVERSE) {
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XColor tmp = fgcolor;
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fgcolor = bgcolor;
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bgcolor = tmp;
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}
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slen = sprintf(attr + slen, "<span class=' %s",
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((row % 2) ? "ev" : "od"));
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if (ld->attribs[col] & BOLD)
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slen += sprintf(attr + slen, " bd");
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#if OPT_WIDE_ATTRS
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/*
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* Handle multiple text-decoration properties.
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* Treat ATR_DBL_UNDER the same as UNDERLINE since there is no
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* official proper CSS 2.2 way to use double underlining. (E.g.
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* using border-bottom does not work for successive lines and
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* "text-decoration: underline double" is a browser extension).
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*/
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if ((ld->attribs[col] & (UNDERLINE | ATR_DBL_UNDER)) &&
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(ld->attribs[col] & ATR_STRIKEOUT))
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slen += sprintf(attr + slen, " lu");
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else if (ld->attribs[col] & (UNDERLINE | ATR_DBL_UNDER))
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slen += sprintf(attr + slen, " ul");
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else if (ld->attribs[col] & ATR_STRIKEOUT)
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slen += sprintf(attr + slen, " st");
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if (ld->attribs[col] & ATR_ITALIC)
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slen += sprintf(attr + slen, " it");
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#else
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if (ld->attribs[col] & UNDERLINE)
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slen += sprintf(attr + slen, " ul");
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#endif
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slen += sprintf(attr + slen,
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" ' style='color: rgb(%.2f%%, %.2f%%, %.2f%%);",
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RGBPCT(fgcolor));
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(void) sprintf(attr + slen,
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" background: rgb(%.2f%%, %.2f%%, %.2f%%)'>", RGBPCT(bgcolor));
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if (col == 0) {
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fputs(attr, fp);
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attr = &attrs[attr_index ^= 1][0];
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} else {
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if (strcmp(&attrs[0][0], &attrs[1][0])) {
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fputs("</span>", fp);
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fputs(attr, fp);
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attr = &attrs[attr_index ^= 1][0];
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}
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}
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#if OPT_WIDE_CHARS
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if (chr > 127) {
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/* Ignore hidden characters. */
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if (chr != HIDDEN_CHAR) {
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Char temp[10];
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*convertToUTF8(temp, chr) = 0;
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fputs((char *) temp, fp);
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}
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} else
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#endif
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switch (chr) {
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case 0:
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fputc(' ', fp);
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break;
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case '&':
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fputs("&", fp);
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break;
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case '<':
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fputs("<", fp);
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break;
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case '>':
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fputs(">", fp);
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break;
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case ' ':
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fputs("\302\240", fp);
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break;
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default:
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fputc((int) chr, fp);
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}
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xevents(xw);
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}
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fprintf(fp, "</span>\n");
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xevents(xw);
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}
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static void
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dumpHtmlFooter(XtermWidget xw, FILE *fp)
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{
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fputs("</pre>\n", fp);
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fputs(" </div>\n", fp);
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fputs(" </body>\n", fp);
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fputs("</html>\n", fp);
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xevents(xw);
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}
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char *
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PixelToCSSColor(XtermWidget xw, Pixel p)
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{
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static char rgb[sizeof "rgb(100.00%, 100.00%, 100.00%)"];
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XColor c;
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c.pixel = p;
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XQueryColor(xw->screen.display, xw->core.colormap, &c);
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sprintf(rgb, "rgb(%.2f%%, %.2f%%, %.2f%%)", RGBPCT(c));
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return rgb;
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}
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