From 334eb5f4d03f5185364495b2284b3cf1d97ac1e0 Mon Sep 17 00:00:00 2001 From: Ray Miller Date: Sat, 7 Oct 2023 17:12:47 +0100 Subject: [PATCH] Initial check-in --- anagram/anagram.go | 40 +++ assets/custom.css | 3 + assets/htmx.min.js | 1 + assets/simple.css | 685 ++++++++++++++++++++++++++++++++++++++++++++ go.mod | 5 + go.sum | 2 + grep/grep.go | 76 +++++ main.go | 40 +++ server/server.go | 77 +++++ server/templates.go | 47 +++ util/util.go | 38 +++ 11 files changed, 1014 insertions(+) create mode 100644 anagram/anagram.go create mode 100644 assets/custom.css create mode 100644 assets/htmx.min.js create mode 100644 assets/simple.css create mode 100644 go.mod create mode 100644 go.sum create mode 100644 grep/grep.go create mode 100644 main.go create mode 100644 server/server.go create mode 100644 server/templates.go create mode 100644 util/util.go diff --git a/anagram/anagram.go b/anagram/anagram.go new file mode 100644 index 0000000..54fea20 --- /dev/null +++ b/anagram/anagram.go @@ -0,0 +1,40 @@ +package anagram + +import ( + "bufio" + "io" + "sort" + + "github.com/ray1729/puzzle-solver/util" +) + +type DB interface { + FindAnagrams(s string) []string +} + +func toKey(s string) string { + xs := util.LowerCaseAlpha(s) + sort.Slice(xs, func(i, j int) bool { return xs[i] < xs[j] }) + return string(xs) +} + +type HashDBImpl map[string][]string + +func Load(r io.Reader) (DB, error) { + db := make(HashDBImpl) + sc := bufio.NewScanner(r) + for sc.Scan() { + s := sc.Text() + k := toKey(s) + db[k] = append(db[k], s) + + } + if err := sc.Err(); err != nil { + return nil, err + } + return db, nil +} + +func (d HashDBImpl) FindAnagrams(s string) []string { + return d[toKey(s)] +} diff --git a/assets/custom.css b/assets/custom.css new file mode 100644 index 0000000..04ca3c7 --- /dev/null +++ b/assets/custom.css @@ -0,0 +1,3 @@ +div.center { + text-align: center; +} \ No newline at end of file diff --git a/assets/htmx.min.js b/assets/htmx.min.js new file mode 100644 index 0000000..5ac9041 --- /dev/null +++ b/assets/htmx.min.js @@ -0,0 +1 @@ +(function(e,t){if(typeof define==="function"&&define.amd){define([],t)}else if(typeof module==="object"&&module.exports){module.exports=t()}else{e.htmx=e.htmx||t()}})(typeof self!=="undefined"?self:this,function(){return function(){"use strict";var Y={onLoad:t,process:Pt,on:Z,off:K,trigger:fe,ajax:wr,find:E,findAll:f,closest:v,values:function(e,t){var r=nr(e,t||"post");return r.values},remove:U,addClass:B,removeClass:n,toggleClass:V,takeClass:j,defineExtension:qr,removeExtension:Hr,logAll:X,logNone:F,logger:null,config:{historyEnabled:true,historyCacheSize:10,refreshOnHistoryMiss:false,defaultSwapStyle:"innerHTML",defaultSwapDelay:0,defaultSettleDelay:20,includeIndicatorStyles:true,indicatorClass:"htmx-indicator",requestClass:"htmx-request",addedClass:"htmx-added",settlingClass:"htmx-settling",swappingClass:"htmx-swapping",allowEval:true,allowScriptTags:true,inlineScriptNonce:"",attributesToSettle:["class","style","width","height"],withCredentials:false,timeout:0,wsReconnectDelay:"full-jitter",wsBinaryType:"blob",disableSelector:"[hx-disable], [data-hx-disable]",useTemplateFragments:false,scrollBehavior:"smooth",defaultFocusScroll:false,getCacheBusterParam:false,globalViewTransitions:false,methodsThatUseUrlParams:["get"],selfRequestsOnly:false},parseInterval:d,_:e,createEventSource:function(e){return new EventSource(e,{withCredentials:true})},createWebSocket:function(e){var t=new WebSocket(e,[]);t.binaryType=Y.config.wsBinaryType;return t},version:"1.9.6"};var r={addTriggerHandler:St,bodyContains:oe,canAccessLocalStorage:M,findThisElement:de,filterValues:lr,hasAttribute:o,getAttributeValue:ee,getClosestAttributeValue:re,getClosestMatch:c,getExpressionVars:xr,getHeaders:sr,getInputValues:nr,getInternalData:ie,getSwapSpecification:fr,getTriggerSpecs:Ze,getTarget:ge,makeFragment:l,mergeObjects:se,makeSettleInfo:T,oobSwap:ye,querySelectorExt:le,selectAndSwap:Fe,settleImmediately:Wt,shouldCancel:tt,triggerEvent:fe,triggerErrorEvent:ue,withExtensions:C};var b=["get","post","put","delete","patch"];var w=b.map(function(e){return"[hx-"+e+"], [data-hx-"+e+"]"}).join(", ");function d(e){if(e==undefined){return undefined}if(e.slice(-2)=="ms"){return parseFloat(e.slice(0,-2))||undefined}if(e.slice(-1)=="s"){return parseFloat(e.slice(0,-1))*1e3||undefined}if(e.slice(-1)=="m"){return parseFloat(e.slice(0,-1))*1e3*60||undefined}return parseFloat(e)||undefined}function Q(e,t){return e.getAttribute&&e.getAttribute(t)}function o(e,t){return e.hasAttribute&&(e.hasAttribute(t)||e.hasAttribute("data-"+t))}function ee(e,t){return Q(e,t)||Q(e,"data-"+t)}function u(e){return e.parentElement}function te(){return document}function c(e,t){while(e&&!t(e)){e=u(e)}return e?e:null}function O(e,t,r){var n=ee(t,r);var i=ee(t,"hx-disinherit");if(e!==t&&i&&(i==="*"||i.split(" ").indexOf(r)>=0)){return"unset"}else{return n}}function re(t,r){var n=null;c(t,function(e){return n=O(t,e,r)});if(n!=="unset"){return n}}function h(e,t){var r=e.matches||e.matchesSelector||e.msMatchesSelector||e.mozMatchesSelector||e.webkitMatchesSelector||e.oMatchesSelector;return r&&r.call(e,t)}function q(e){var t=/<([a-z][^\/\0>\x20\t\r\n\f]*)/i;var r=t.exec(e);if(r){return r[1].toLowerCase()}else{return""}}function i(e,t){var r=new DOMParser;var n=r.parseFromString(e,"text/html");var i=n.body;while(t>0){t--;i=i.firstChild}if(i==null){i=te().createDocumentFragment()}return i}function H(e){return e.match(/",0);return r.querySelector("template").content}else{var n=q(e);switch(n){case"thead":case"tbody":case"tfoot":case"colgroup":case"caption":return i(""+e+"
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b/assets/simple.css @@ -0,0 +1,685 @@ +/* Global variables. */ +:root, +::backdrop { + /* Set sans-serif & mono fonts */ + --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir, + "Nimbus Sans L", Roboto, "Noto Sans", "Segoe UI", Arial, Helvetica, + "Helvetica Neue", sans-serif; + --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace; + --standard-border-radius: 5px; + + /* Default (light) theme */ + --bg: #fff; + --accent-bg: #f5f7ff; + --text: #212121; + --text-light: #585858; + --border: #898EA4; + --accent: #0d47a1; + --code: #d81b60; + --preformatted: #444; + --marked: #ffdd33; + --disabled: #efefef; +} + +/* Dark theme */ +@media (prefers-color-scheme: dark) { + :root, + ::backdrop { + color-scheme: dark; + --bg: #212121; + --accent-bg: #2b2b2b; + --text: #dcdcdc; + --text-light: #ababab; + --accent: #ffb300; + --code: #f06292; + --preformatted: #ccc; + --disabled: #111; + } + /* Add a bit of transparency so light media isn't so glaring in dark mode */ + img, + video { + opacity: 0.8; + } +} + +/* Reset box-sizing */ +*, *::before, *::after { + box-sizing: border-box; +} + +/* Reset default appearance */ +textarea, +select, +input, +progress { + appearance: none; + -webkit-appearance: none; + -moz-appearance: none; +} + +html { + /* Set the font globally */ + font-family: var(--sans-font); + scroll-behavior: smooth; +} + +/* Make the body a nice central block */ +body { + color: var(--text); + background-color: var(--bg); + font-size: 1.15rem; + line-height: 1.5; + display: grid; + grid-template-columns: 1fr min(45rem, 90%) 1fr; + margin: 0; +} +body > * { + grid-column: 2; +} + +/* Make the header bg full width, but the content inline with body */ +body > header { + background-color: var(--accent-bg); + border-bottom: 1px solid var(--border); + text-align: center; + padding: 0 0.5rem 2rem 0.5rem; + grid-column: 1 / -1; +} + +body > header h1 { + max-width: 1200px; + margin: 1rem auto; +} + +body > header p { + max-width: 40rem; + margin: 1rem auto; +} + +/* Add a little padding to ensure spacing is correct between content and header > nav */ +main { + padding-top: 1.5rem; +} + +body > footer { + margin-top: 4rem; + padding: 2rem 1rem 1.5rem 1rem; + color: var(--text-light); + font-size: 0.9rem; + text-align: center; + border-top: 1px solid var(--border); +} + +/* Format headers */ +h1 { + font-size: 3rem; +} + +h2 { + font-size: 2.6rem; + margin-top: 3rem; +} + +h3 { + font-size: 2rem; + margin-top: 3rem; +} + +h4 { + font-size: 1.44rem; +} + +h5 { + font-size: 1.15rem; +} + +h6 { + font-size: 0.96rem; +} + +p { + margin: 1.5rem 0; +} + +/* Prevent long strings from overflowing container */ +p, h1, h2, h3, h4, h5, h6 { + overflow-wrap: break-word; +} + +/* Fix line height when title wraps */ +h1, +h2, +h3 { + line-height: 1.1; +} + +/* Reduce header size on mobile */ +@media only screen and (max-width: 720px) { + h1 { + font-size: 2.5rem; + } + + h2 { + font-size: 2.1rem; + } + + h3 { + font-size: 1.75rem; + } + + h4 { + font-size: 1.25rem; + } +} + +/* Format links & buttons */ +a, +a:visited { + color: var(--accent); +} + +a:hover { + text-decoration: none; +} + +button, +.button, +a.button, /* extra specificity to override a */ +input[type="submit"], +input[type="reset"], +input[type="button"], +label[type="button"] { + border: 1px solid var(--accent); + background-color: var(--accent); + color: var(--bg); + padding: 0.5rem 0.9rem; + text-decoration: none; + line-height: normal; +} + +.button[aria-disabled="true"], +input:disabled, +textarea:disabled, +select:disabled, +button[disabled] { + cursor: not-allowed; + background-color: var(--disabled); + border-color: var(--disabled); + color: var(--text-light); +} + +input[type="range"] { + padding: 0; +} + +/* Set the cursor to '?' on an abbreviation and style the abbreviation to show that there is more information underneath */ +abbr[title] { + cursor: help; + text-decoration-line: underline; + text-decoration-style: dotted; +} + +button:enabled:hover, +.button:not([aria-disabled="true"]):hover, +input[type="submit"]:enabled:hover, +input[type="reset"]:enabled:hover, +input[type="button"]:enabled:hover, +label[type="button"]:hover { + filter: brightness(1.4); + cursor: pointer; +} + +.button:focus-visible, +button:focus-visible:where(:enabled), +input:enabled:focus-visible:where( + [type="submit"], + [type="reset"], + [type="button"] +) { + outline: 2px solid var(--accent); + outline-offset: 1px; +} + +/* Format navigation */ +header > nav { + font-size: 1rem; + line-height: 2; + padding: 1rem 0 0 0; +} + +/* Use flexbox to allow items to wrap, as needed */ +header > nav ul, +header > nav ol { + align-content: space-around; + align-items: center; + display: flex; + flex-direction: row; + flex-wrap: wrap; + justify-content: center; + list-style-type: none; + margin: 0; + padding: 0; +} + +/* List items are inline elements, make them behave more like blocks */ +header > nav ul li, +header > nav ol li { + display: inline-block; +} + +header > nav a, +header > nav a:visited { + margin: 0 0.5rem 1rem 0.5rem; + border: 1px solid var(--border); + border-radius: var(--standard-border-radius); + color: var(--text); + display: inline-block; + padding: 0.1rem 1rem; + text-decoration: none; +} + +header > nav a:hover, +header > nav a.current, +header > nav a[aria-current="page"] { + border-color: var(--accent); + color: var(--accent); + cursor: pointer; +} + +/* Reduce nav side on mobile */ +@media only screen and (max-width: 720px) { + header > nav a { + border: none; + padding: 0; + text-decoration: underline; + line-height: 1; + } +} + +/* Consolidate box styling */ +aside, details, pre, progress { + background-color: var(--accent-bg); + border: 1px solid var(--border); + border-radius: var(--standard-border-radius); + margin-bottom: 1rem; +} + +aside { + font-size: 1rem; + width: 30%; + padding: 0 15px; + margin-inline-start: 15px; + float: right; +} +*[dir="rtl"] aside { + float: left; +} + +/* Make aside full-width on mobile */ +@media only screen and (max-width: 720px) { + aside { + width: 100%; + float: none; + margin-inline-start: 0; + } +} + +article, fieldset, dialog { + border: 1px solid var(--border); + padding: 1rem; + border-radius: var(--standard-border-radius); + margin-bottom: 1rem; +} + +article h2:first-child, +section h2:first-child { + margin-top: 1rem; +} + +section { + border-top: 1px solid var(--border); + border-bottom: 1px solid var(--border); + padding: 2rem 1rem; + margin: 3rem 0; +} + +/* Don't double separators when chaining sections */ +section + section, +section:first-child { + border-top: 0; + padding-top: 0; +} + +section:last-child { + border-bottom: 0; + padding-bottom: 0; +} + +details { + padding: 0.7rem 1rem; +} + +summary { + cursor: pointer; + font-weight: bold; + padding: 0.7rem 1rem; + margin: -0.7rem -1rem; + word-break: break-all; +} + +details[open] > summary + * { + margin-top: 0; +} + +details[open] > summary { + margin-bottom: 0.5rem; +} + +details[open] > :last-child { + margin-bottom: 0; +} + +/* Format tables */ +table { + border-collapse: collapse; + margin: 1.5rem 0; +} + +td, +th { + border: 1px solid var(--border); + text-align: start; + padding: 0.5rem; +} + +th { + background-color: var(--accent-bg); + font-weight: bold; +} + +tr:nth-child(even) { + /* Set every other cell slightly darker. Improves readability. */ + background-color: var(--accent-bg); +} + +table caption { + font-weight: bold; + margin-bottom: 0.5rem; +} + +/* Format forms */ +textarea, +select, +input, +button, +.button { + font-size: inherit; + font-family: inherit; + padding: 0.5rem; + margin-bottom: 0.5rem; + border-radius: var(--standard-border-radius); + box-shadow: none; + max-width: 100%; + display: inline-block; +} +textarea, +select, +input { + color: var(--text); + background-color: var(--bg); + border: 1px solid var(--border); +} +label { + display: block; +} +textarea:not([cols]) { + width: 100%; +} + +/* Add arrow to drop-down */ +select:not([multiple]) { + background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%), + linear-gradient(135deg, var(--text) 51%, transparent 49%); + background-position: calc(100% - 15px), calc(100% - 10px); + background-size: 5px 5px, 5px 5px; + background-repeat: no-repeat; + padding-inline-end: 25px; +} +*[dir="rtl"] select:not([multiple]) { + background-position: 10px, 15px; +} + +/* checkbox and radio button style */ +input[type="checkbox"], +input[type="radio"] { + vertical-align: middle; + position: relative; + width: min-content; +} + +input[type="checkbox"] + label, +input[type="radio"] + label { + display: inline-block; +} + +input[type="radio"] { + border-radius: 100%; +} + +input[type="checkbox"]:checked, +input[type="radio"]:checked { + background-color: var(--accent); +} + +input[type="checkbox"]:checked::after { + /* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */ + content: " "; + width: 0.18em; + height: 0.32em; + border-radius: 0; + position: absolute; + top: 0.05em; + left: 0.17em; + background-color: transparent; + border-right: solid var(--bg) 0.08em; + border-bottom: solid var(--bg) 0.08em; + font-size: 1.8em; + transform: rotate(45deg); +} +input[type="radio"]:checked::after { + /* creates a colored circle for the checked radio button */ + content: " "; + width: 0.25em; + height: 0.25em; + border-radius: 100%; + position: absolute; + top: 0.125em; + background-color: var(--bg); + left: 0.125em; + font-size: 32px; +} + +/* Makes input fields wider on smaller screens */ +@media only screen and (max-width: 720px) { + textarea, + select, + input { + width: 100%; + } +} + +/* Set a height for color input */ +input[type="color"] { + height: 2.5rem; + padding: 0.2rem; +} + +/* do not show border around file selector button */ +input[type="file"] { + border: 0; +} + +/* Misc body elements */ +hr { + border: none; + height: 1px; + background: var(--border); + margin: 1rem auto; +} + +mark { + padding: 2px 5px; + border-radius: var(--standard-border-radius); + background-color: var(--marked); + color: black; +} + +mark a { + color: #0d47a1; +} + +img, +video { + max-width: 100%; + height: auto; + border-radius: var(--standard-border-radius); +} + +figure { + margin: 0; + display: block; + overflow-x: auto; +} + +figcaption { + text-align: center; + font-size: 0.9rem; + color: var(--text-light); + margin-bottom: 1rem; +} + +blockquote { + margin-inline-start: 2rem; + margin-inline-end: 0; + margin-block: 2rem; + padding: 0.4rem 0.8rem; + border-inline-start: 0.35rem solid var(--accent); + color: var(--text-light); + font-style: italic; +} + +cite { + font-size: 0.9rem; + color: var(--text-light); + font-style: normal; +} + +dt { + color: var(--text-light); +} + +/* Use mono font for code elements */ +code, +pre, +pre span, +kbd, +samp { + font-family: var(--mono-font); + color: var(--code); +} + +kbd { + color: var(--preformatted); + border: 1px solid var(--preformatted); + border-bottom: 3px solid var(--preformatted); + border-radius: var(--standard-border-radius); + padding: 0.1rem 0.4rem; +} + +pre { + padding: 1rem 1.4rem; + max-width: 100%; + overflow: auto; + color: var(--preformatted); +} + +/* Fix embedded code within pre */ +pre code { + color: var(--preformatted); + background: none; + margin: 0; + padding: 0; +} + +/* Progress bars */ +/* Declarations are repeated because you */ +/* cannot combine vendor-specific selectors */ +progress { + width: 100%; +} + +progress:indeterminate { + background-color: var(--accent-bg); +} + +progress::-webkit-progress-bar { + border-radius: var(--standard-border-radius); + background-color: var(--accent-bg); +} + +progress::-webkit-progress-value { + border-radius: var(--standard-border-radius); + background-color: var(--accent); +} + +progress::-moz-progress-bar { + border-radius: var(--standard-border-radius); + background-color: var(--accent); + transition-property: width; + transition-duration: 0.3s; +} + +progress:indeterminate::-moz-progress-bar { + background-color: var(--accent-bg); +} + +dialog { + max-width: 40rem; + margin: auto; +} + +dialog::backdrop { + background-color: var(--bg); + opacity: 0.8; +} + +@media only screen and (max-width: 720px) { + dialog { + max-width: 100%; + margin: auto 1em; + } +} + +/* Superscript & Subscript */ +/* Prevent scripts from affecting line-height. */ +sup, sub { + vertical-align: baseline; + position: relative; +} + +sup { + top: -0.4em; +} + +sub { + top: 0.3em; +} + +/* Classes for notices */ +.notice { + background: var(--accent-bg); + border: 2px solid var(--border); + border-radius: 5px; + padding: 1.5rem; + margin: 2rem 0; +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..2fb9f61 --- /dev/null +++ b/go.mod @@ -0,0 +1,5 @@ +module github.com/ray1729/puzzle-solver + +go 1.21.1 + +require golang.org/x/text v0.13.0 // indirect diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..82ce224 --- /dev/null +++ b/go.sum @@ -0,0 +1,2 @@ +golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k= +golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE= diff --git a/grep/grep.go b/grep/grep.go new file mode 100644 index 0000000..1c803c1 --- /dev/null +++ b/grep/grep.go @@ -0,0 +1,76 @@ +package grep + +import ( + "bufio" + "io" + + "github.com/ray1729/puzzle-solver/util" +) + +type DB interface { + FindMatches(s string) []string +} + +type Node struct { + Value byte + Children []*Node + Results []string +} + +func (n *Node) Add(xs []byte, s string) { + if len(xs) == 0 { + n.Results = append(n.Results, s) + return + } + x := xs[0] + var child *Node + for _, c := range n.Children { + if c.Value == x { + child = c + break + } + } + if child == nil { + child = &Node{Value: x} + n.Children = append(n.Children, child) + } + child.Add(xs[1:], s) +} + +func Load(r io.Reader) (DB, error) { + db := &Node{} + sc := bufio.NewScanner(r) + for sc.Scan() { + s := sc.Text() + xs := util.LowerCaseAlpha(s) + db.Add(xs, s) + } + if err := sc.Err(); err != nil { + return nil, err + } + return db, nil +} + +func (n *Node) FindMatches(s string) []string { + return n.find(util.LowerCaseAlphaOrDot(s)) +} + +func (n *Node) find(xs []byte) []string { + if len(xs) == 0 { + return n.Results + } + x := xs[0] + if x == '.' { + var result []string + for _, c := range n.Children { + result = append(result, c.find(xs[1:])...) + } + return result + } + for _, c := range n.Children { + if c.Value == x { + return c.find(xs[1:]) + } + } + return nil +} diff --git a/main.go b/main.go new file mode 100644 index 0000000..57e28a3 --- /dev/null +++ b/main.go @@ -0,0 +1,40 @@ +package main + +import ( + "log" + "net/http" + "os" + + "github.com/ray1729/puzzle-solver/anagram" + "github.com/ray1729/puzzle-solver/grep" + "github.com/ray1729/puzzle-solver/server" +) + +var grepDB grep.DB +var anagramDB anagram.DB + +func init() { + f, err := os.Open("/usr/share/dict/british-english-huge") + if err != nil { + log.Fatalf("Error opening word list: %v", err) + } + defer f.Close() + grepDB, err = grep.Load(f) + if err != nil { + log.Fatalf("Error loading grep database: %v", err) + } + f.Seek(0, 0) + anagramDB, err = anagram.Load(f) + if err != nil { + log.Fatalf("Error loading anagram database: %v", err) + } +} + +func main() { + s := server.New("./assets", grepDB, anagramDB) + address := ":8000" + log.Printf("Listening on %s", address) + if err := http.ListenAndServe(address, s); err != nil { + log.Fatal(err) + } +} diff --git a/server/server.go b/server/server.go new file mode 100644 index 0000000..abb0981 --- /dev/null +++ b/server/server.go @@ -0,0 +1,77 @@ +package server + +import ( + "fmt" + "html/template" + "log" + "net/http" + + "github.com/ray1729/puzzle-solver/anagram" + "github.com/ray1729/puzzle-solver/grep" +) + +func New(assetsPath string, grepDB grep.DB, anagramDB anagram.DB) http.Handler { + mux := http.NewServeMux() + mux.Handle("/assets/", http.StripPrefix("/assets/", http.FileServer(http.Dir(assetsPath)))) + mux.HandleFunc("/", getHomePage) + mux.HandleFunc("/search", getResults(grepDB, anagramDB)) + return withRequestLogger(mux) +} + +func withRequestLogger(h http.Handler) http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + log.Printf("%s %s %s", r.Method, r.URL.Path, r.URL.Query()) + h.ServeHTTP(w, r) + }) +} + +func getResults(grepDB grep.DB, anagramDB anagram.DB) func(w http.ResponseWriter, r *http.Request) { + return func(w http.ResponseWriter, r *http.Request) { + if err := r.ParseForm(); err != nil { + log.Printf("error parsing form: %v", err) + http.Error(w, "error parsing form", http.StatusBadRequest) + return + } + mode := r.Form.Get("mode") + pattern := r.Form.Get("pattern") + templateParams := struct { + Preamble string + Results []string + }{} + switch mode { + case "match": + templateParams.Results = grepDB.FindMatches(pattern) + if len(templateParams.Results) > 0 { + templateParams.Preamble = fmt.Sprintf("Matches for %q:", pattern) + } else { + templateParams.Preamble = fmt.Sprintf("Found no matches for %q", pattern) + } + case "anagrams": + templateParams.Results = anagramDB.FindAnagrams(pattern) + if len(templateParams.Results) > 0 { + templateParams.Preamble = fmt.Sprintf("Anagrams of %q:", pattern) + } else { + templateParams.Preamble = fmt.Sprintf("Found no anagrams of %q", pattern) + } + case "clear": + // pass + default: + log.Printf("invalid mode: %s", mode) + http.Error(w, "invalid mode", http.StatusBadRequest) + return + } + renderTemplate(w, results, templateParams) + } +} + +func getHomePage(w http.ResponseWriter, r *http.Request) { + renderTemplate(w, home, nil) +} + +func renderTemplate(w http.ResponseWriter, t *template.Template, params any) { + err := t.Execute(w, params) + if err != nil { + log.Printf("Error rendering template %s: %v", t.Name(), err) + http.Error(w, "Internal server error", http.StatusInternalServerError) + } +} diff --git a/server/templates.go b/server/templates.go new file mode 100644 index 0000000..fb8d82c --- /dev/null +++ b/server/templates.go @@ -0,0 +1,47 @@ +package server + +import "html/template" + +var home = template.Must(template.New("home").Parse(` + + + + + + + + + Anagram and Word Search + + +
+

Anagram and Word Search

+
+ +
+
+
+ + + + +
+
+
+
+
+ + + +`)) + +var results = template.Must(template.New("results").Parse(` +{{ with .Preamble }} +

{{ . }}

+{{ end }} +
    +{{ range .Results }} +
  • {{.}}
    • +{{ end }} +
+`)) diff --git a/util/util.go b/util/util.go new file mode 100644 index 0000000..906a7ad --- /dev/null +++ b/util/util.go @@ -0,0 +1,38 @@ +package util + +import ( + "bytes" + "strings" + "unicode" + + "golang.org/x/text/runes" + "golang.org/x/text/transform" + "golang.org/x/text/unicode/norm" +) + +func Normalize(s string) []byte { + t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC) + s, _, _ = transform.String(t, s) + s = strings.ToLower(s) + return []byte(s) +} + +func LowerCaseAlpha(s string) []byte { + result := bytes.NewBuffer(nil) + for _, x := range Normalize(s) { + if x >= 'a' && x <= 'z' { + result.WriteByte(x) + } + } + return result.Bytes() +} + +func LowerCaseAlphaOrDot(s string) []byte { + result := bytes.NewBuffer(nil) + for _, x := range Normalize(s) { + if x >= 'a' && x <= 'z' || x == '.' { + result.WriteByte(x) + } + } + return result.Bytes() +}