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expand ANSI color support

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adds support for 256 colors

does not yet add support for themed 16-color mapping ([01;38;5;[0-15])

closes #3617
This commit is contained in:
MinRK 2013-07-11 17:47:15 -07:00
parent 3e2e9d736e
commit 1186d575a9
1 changed files with 91 additions and 15 deletions
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102
IPython/html/static/base/js/utils.js
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@ -8,7 +8,6 @@
//============================================================================
// Utilities
//============================================================================
IPython.namespace('IPython.utils');
IPython.utils = (function (IPython) {
@ -71,7 +70,7 @@ IPython.utils = (function (IPython) {
separator2, match, lastIndex, lastLength;
str += ""; // Type-convert
var compliantExecNpcg = typeof(/()??/.exec("")[1]) === "undefined"
var compliantExecNpcg = typeof(/()??/.exec("")[1]) === "undefined";
if (!compliantExecNpcg) {
// Doesn't need flags gy, but they don't hurt
separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
@ -169,21 +168,98 @@ IPython.utils = (function (IPython) {
"37":"ansigrey"
};
function _process_numbers(attrs, numbers) {
// process ansi escapes
var n = numbers.shift();
if (ansi_colormap[n]) {
if ( ! attrs["class"] ) {
attrs["class"] = ansi_colormap[n];
} else {
attrs["class"] += " " + ansi_colormap[n];
}
} else if (n == "38" || n == "48") {
// 256-color
if (numbers.length < 2) {
console.log("Not enough fields for 256-color escapes", numbers);
return;
}
var index_or_rgb = numbers.shift();
var r,g,b;
if (index_or_rgb == "5") {
var idx = parseInt(numbers.shift());
if (idx < 16) {
// indexed color, not supported
} else if (idx < 232) {
// 216 color 6x6x6
idx = idx - 16;
b = idx % 6;
g = Math.floor(idx / 6) % 6;
r = Math.floor(idx / 36) % 6;
// convert to rgb
r = (r * 51);
g = (g * 51);
b = (b * 51);
} else {
// grayscale
idx = idx - 231;
// it's 1-24 and should *not* include black or white,
// so a 26 point scale
r = g = b = idx * 256 / 26;
}
} else if (index_or_rgb == "2") {
if (numbers.length > 3) {
console.log("Not enough fields for RGB", numbers);
return;
}
// simple rgb
r = numbers.shift();
g = numbers.shift();
b = numbers.shift();
} else {
console.log("unrecognized control", numbers);
return;
}
if (r !== undefined) {
// apply the rgb color
var line;
if (n == "38") {
line = "color: ";
} else {
line = "background-color: ";
}
line = line + "rgb(" + r + "," + g + "," + b + ");"
if ( !attrs["style"] ) {
attrs["style"] = line;
} else {
attrs["style"] += " " + line;
}
}
}
}
function ansispan(str) {
// ansispan function adapted from github.com/mmalecki/ansispan (MIT License)
Object.keys(ansi_colormap).forEach(function(ansi) {
var span = '<span class="' + ansi_colormap[ansi] + '">';
// regular ansi escapes (using the table above)
return str.replace(/\033\[(0?[01]|22|39)?([;\d]+)?m/g, function(match, prefix, pattern) {
if (!pattern) {
// [(01|22|39|)m close spans
return "</span>";
}
// consume sequence of color escapes
var numbers = pattern.match(/\d+/g);
var attrs = {};
while (numbers.length > 0) {
_process_numbers(attrs, numbers);
}
//
// `\033[Xm` == `\033[0;Xm` sets foreground color to `X`.
//
str = str.replace(
new RegExp('\033\\[(0?[01];)?' + ansi + 'm', 'g'), span
);
var span = "<span ";
for (var attr in attrs) {
var value = attrs[attr];
span = span + " " + attr + '="' + attrs[attr] + '"';
}
return span + ">";
});
str = str.replace(/\033\[(0?[01]|39|22)?m/g, '</span>');
return str;
};
// Transform ANSI color escape codes into HTML <span> tags with css