var html; // accumulated results page
var searchString; // original search string
var nResults = 0; // number of search results
var searchTerms; // array of words in search string
// indices into a libdata entry
var URL = 0;
var NAME = 1;
var TYPE = 2;
var FILENAME = 3;
var AUTHORS = 4;
var ROUTINE_NAME = 5;
var COMMENTS = 6;
var PARAMETERS = 7;
var CATEGORIES = 8;
var ATTRIBUTES = 9;
var MATCH_TYPE = 10;
var N_MATCHES = 11;
var SCORE = 12;
var MATCHES = 13;
var SCORE_VALUES = new Array(0, 0, 0, 8, 6, 10, 4, 6, 8, 4);
/*
Find results from the search.
*/
// Returns true for a-zA-Z0-9 and &, false otherwise.
function isAlnum(ch) {
if ((ch >= "a" && ch <= "z") || (ch == "&") || (ch >= "A" && ch <= "Z") || (ch >= "0" && ch <="9")) {
return true;
} else {
return false;
}
}
// find all the matches in a single item
function searchElement(item, matchType, upperSearchString) {
var element = libdata[item][matchType].toUpperCase();
var pos, origPos = 0;
libdata[item][N_MATCHES] = 0;
pos = element.indexOf(upperSearchString);
while (pos >= 0) {
origPos += pos + 1;
libdata[item][MATCHES + libdata[item][N_MATCHES]] = origPos - 1;
libdata[item][N_MATCHES]++;
element = element.substring(pos + 1, element.length);
while (isAlnum(element.charAt(0)) && element.length > 0) {
element = element.substring(1, element.length);
origPos++;
}
pos = element.indexOf(upperSearchString);
}
}
function searchItem(item, upperSearchString) {
var matchType = TYPE;
//html += "Searching " + item + " ";
// mark item as not matching
libdata[item][MATCH_TYPE] = -1;
libdata[item][SCORE] = 0;
// search FILENAME, AUTHORS, ROUTINE_NAME, COMMENTS, PARAMETERS,
// CATEGORIES, and ATTRIBUTES fields
while (++matchType <= ATTRIBUTES && libdata[item][MATCH_TYPE] == -1) {
searchElement(item, matchType, upperSearchString);
if (libdata[item][N_MATCHES] > 0) {
libdata[item][MATCH_TYPE] = matchType;
}
}
}
function sortByScore(a, b) {
return b[SCORE] - a[SCORE];
}
function sortResults() {
for (item = 0; item < libdata.length; item++) {
if (libdata[item][N_MATCHES] > 0) {
matchType = libdata[item][MATCH_TYPE];
typeMultiplier = SCORE_VALUES[matchType];
matchPercentage = libdata[item][N_MATCHES] * searchString.length / libdata[item][matchType].length;
libdata[item][SCORE] = typeMultiplier * matchPercentage;
}
}
libdata = libdata.sort(sortByScore);
}
function findResults() {
upperSearchString = searchString.toUpperCase();
for (var item = 0; item < libdata.length; item++) {
searchItem(item, upperSearchString);
}
sortResults();
}
/*
Create results web page. Results are written to the html variable
and then sent to the browser.
*/
function putHeader() {
html = "Search results";
html += "";
html += "";
html += "";
html += "
";
html += "
" + title + "
";
html += "
" + subtitle + "
";
html += "";
html += "
Search results for \"" + searchString + "\"
";
}
function putItem(item) {
mType = libdata[item][MATCH_TYPE];
width = Math.round(2 * libdata[item][SCORE]);
html += "
";
html += " ";
html += "" + libdata[item][NAME] + " ";
html += libdata[item][TYPE] + " ";
nPreCharacters = 25;
nPostCharacters = 40;
html += "";
if (libdata[item][MATCHES] > nPreCharacters) {
html += "...";
}
html += libdata[item][mType].substring(libdata[item][MATCHES] - nPreCharacters, libdata[item][MATCHES]);
html += "";
html += libdata[item][mType].substring(libdata[item][MATCHES], libdata[item][MATCHES] + searchString.length);
html += "";
html += libdata[item][mType].substring(libdata[item][MATCHES] + searchString.length, libdata[item][MATCHES] + searchString.length + nPostCharacters);
if (libdata[item][MATCHES] + searchString.length + nPostCharacters < libdata[item][mType].length) {
html += "...";
}
html += " ";
html += "Score: " + Math.round(10 * libdata[item][SCORE]) / 10;
plural = libdata[item][N_MATCHES] > 1 ? "es" : "";
html += " - " + libdata[item][N_MATCHES] + " match" + plural + " in ";
if (mType == 3) {
type = "the filename";
} else if (mType == 4) {
type = "the author names";
} else if (mType == 5) {
type = "the routine name";
} else if (mType == 6) {
type = "the comments";
} else if (mType == 7) {
type = "the parameters";
} else if (mType == 8) {
type = "the categories";
} else if (mType == 9) {
type = "the attributes";
} else {
type = "an unspecified comment";
}
html += type + "
";
}
function putResults() {
for (var item = 0; item < libdata.length; item++) {
if (libdata[item][N_MATCHES] > 0) {
nResults++;
}
}
if (nResults > 0) {
html += "";
}
for (var item = 0; item < libdata.length; item++) {
if (libdata[item][N_MATCHES] > 0) {
putItem(item);
}
}
if (nResults > 0) {
html += "";
}
}
function putFooter() {
var plural = nResults == 1 ? "" : "s";
html += "
" + nResults + " item" + plural + " found.
"
html += "
";
}
function writeResultsPage() {
var htmlCode = html;
iu = open("", "Object", "resizable=yes,scrollbars=yes,toolbar=no,menubar=no,location=no,directories=no,width=475,height=600");
iu.document.open();
iu.document.write(htmlCode);
iu.document.close();
}
/*
Event handlers for forms on search page.
*/
function basicsearch() {
searchString = document.basicForm.basicText.value;
searchTerms = searchString.split(/\s/);
putHeader();
findResults();
putResults();
putFooter();
writeResultsPage();
}
function advancedsearch() {
routineName = document.advancedForm.routinename.value;
comments = document.advancedForm.comments.value;
parameters = document.advancedForm.parameters.value;
authors = document.advancedForm.authors.value;
alert("Advanced searching...\n\nRoutine name = " + routineName + "\nComments = " + comments + "\nParameters = " + parameters + "\nAuthors = " + authors);
}
![](\"idldoc-resources/searchbar.png\")
";
html += "" + libdata[item][NAME] + "