diff options
Diffstat (limited to 'gstudio/static/gstudio/js/d3.csv.js')
-rw-r--r-- | gstudio/static/gstudio/js/d3.csv.js | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/gstudio/static/gstudio/js/d3.csv.js b/gstudio/static/gstudio/js/d3.csv.js new file mode 100644 index 00000000..7565b83b --- /dev/null +++ b/gstudio/static/gstudio/js/d3.csv.js @@ -0,0 +1,92 @@ +(function(){d3.csv = function(url, callback) { + d3.text(url, "text/csv", function(text) { + callback(text && d3.csv.parse(text)); + }); +}; +d3.csv.parse = function(text) { + var header; + return d3.csv.parseRows(text, function(row, i) { + if (i) { + var o = {}, j = -1, m = header.length; + while (++j < m) o[header[j]] = row[j]; + return o; + } else { + header = row; + return null; + } + }); +}; + +d3.csv.parseRows = function(text, f) { + var EOL = {}, // sentinel value for end-of-line + EOF = {}, // sentinel value for end-of-file + rows = [], // output rows + re = /\r\n|[,\r\n]/g, // field separator regex + n = 0, // the current line number + t, // the current token + eol; // is the current token followed by EOL? + + re.lastIndex = 0; // work-around bug in FF 3.6 + + /** @private Returns the next token. */ + function token() { + if (re.lastIndex >= text.length) return EOF; // special case: end of file + if (eol) { eol = false; return EOL; } // special case: end of line + + // special case: quotes + var j = re.lastIndex; + if (text.charCodeAt(j) === 34) { + var i = j; + while (i++ < text.length) { + if (text.charCodeAt(i) === 34) { + if (text.charCodeAt(i + 1) !== 34) break; + i++; + } + } + re.lastIndex = i + 2; + var c = text.charCodeAt(i + 1); + if (c === 13) { + eol = true; + if (text.charCodeAt(i + 2) === 10) re.lastIndex++; + } else if (c === 10) { + eol = true; + } + return text.substring(j + 1, i).replace(/""/g, "\""); + } + + // common case + var m = re.exec(text); + if (m) { + eol = m[0].charCodeAt(0) !== 44; + return text.substring(j, m.index); + } + re.lastIndex = text.length; + return text.substring(j); + } + + while ((t = token()) !== EOF) { + var a = []; + while ((t !== EOL) && (t !== EOF)) { + a.push(t); + t = token(); + } + if (f && !(a = f(a, n++))) continue; + rows.push(a); + } + + return rows; +}; +d3.csv.format = function(rows) { + return rows.map(d3_csv_formatRow).join("\n"); +}; + +function d3_csv_formatRow(row) { + return row.map(d3_csv_formatValue).join(","); +} + +function d3_csv_formatValue(text) { + return /[",\n]/.test(text) + ? "\"" + text.replace(/\"/g, "\"\"") + "\"" + : text; +} +})(); |