neq support

README.md

@@ -60,6 +60,7 @@ render("./output", {
 |---|---|
 | `<@if(context.x)>` | Conditional block — boolean check (must end with `<@endif>`) |
 | `<@if(eq(context.x,"value"))>` | Conditional block — string equality check |
+| `<@if(neq(context.x,"value"))>` | Conditional block — string inequality check |
 | `<@elseif(context.y)>` | Else-if branch (same forms as `@if`) |
 | `<@else>` | Else branch |
 | `<@endif>` | End conditional block |
@@ -72,6 +73,7 @@ render("./output", {
 |---|---|
 | `<@if(context.x)>dirname` | Conditionally include directory/file (boolean check) |
 | `<@if(eq(context.x,"value"))>dirname` | Conditionally include by string equality |
+| `<@if(neq(context.x,"value"))>dirname` | Conditionally include by string inequality |
 | `<@var(context.x)>` | Dynamic directory/file name |
 
 These can be combined: `<@if(context.web.create)><@var(context.web.dir)>` creates a directory named by `context.web.dir` only if `context.web.create` is true.

index.test.ts

@@ -229,19 +229,21 @@ test("reverseDir only includes new rendered files matching include globs", () =>
       dir: "components"
     },
     header: {
-      render: false,
+      render: true,
       text: "test"
     }
   }, { reverseMap: true })
   writeFileSync(join(renderedOut, "components", "new.ts"), "export const value = 1\n")
+  writeFileSync(join(renderedOut, "components", "title.ts"), "export const title = 'test'\n")
   writeFileSync(join(renderedOut, "components", "debug.tmp"), "debug\n")
 
   reverseDir(renderedOut, ignoredOut)
   expect(existsSync(join(ignoredOut, "<@if(context.web.create)><@var(context.web.dir)>", "new.ts"))).toBe(false)
 
   const result = reverseDir(renderedOut, templateOut, { include: ["components/**/*.ts"] })
-  expect(result.filesWritten).toBe(2)
+  expect(result.filesWritten).toBe(3)
   expect(existsSync(join(templateOut, "<@if(context.web.create)><@var(context.web.dir)>", "new.ts"))).toBe(true)
+  expect(readFileSync(join(templateOut, "<@if(context.web.create)><@var(context.web.dir)>", "title.ts"), "utf-8")).toContain("<@var(context.header.text)>")
   expect(existsSync(join(templateOut, "<@if(context.web.create)><@var(context.web.dir)>", "debug.tmp"))).toBe(false)
 })
 
@@ -566,3 +568,25 @@ test("if eq in path", () => {
   render(tmp,{test:"foo"})
   expect(existsSync(join(tmp,"test"))).toBe(false)
 })
+
+test("if neq in file", () => {
+  const createRenderer = initRenderer("./testdata/neq_in_file")
+  expect(() => createRenderer(z.object({test: z.boolean()}))).toThrow(SchemaMismatchError)
+  const render = createRenderer(z.object({test: z.string()}))
+
+  render(tmp,{test:"foo"})
+  expect(readFileSync(join(tmp,"test.txt"), "utf-8")).toContain("not-test")
+
+  render(tmp,{test:"test"})
+  expect(readFileSync(join(tmp,"test.txt"), "utf-8")).toContain("test")
+  expect(readFileSync(join(tmp,"test.txt"), "utf-8")).not.toContain("not-test")
+})
+
+test("if neq in path", () => {
+  const createRenderer = initRenderer("./testdata/neq_in_path")
+  const render = createRenderer(z.object({test: z.string()}))
+  render(tmp,{test:"foo"})
+  expect(existsSync(join(tmp,"not-test"))).toBe(true)
+  render(tmp,{test:"test"})
+  expect(existsSync(join(tmp,"not-test"))).toBe(false)
+})

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@gregorlohaus/tdir",
-  "version": "0.1.6",
+  "version": "0.1.8",
   "license": "MIT",
   "type": "module",
   "main": "./dist/index.js",

parser.ts

@@ -10,14 +10,14 @@ export type TemplateVariable = {
 const IF_RE = /<@(?:if|elseif)\((.+?)\)>/g
 const VAR_RE = /<@var\(context\.(.+?)(?::(\w+))?\)>/g
 const DIRECTIVE_RE = /<@(if|elseif|else|endif)(?:\((.+?)\))?>/g
-const EQ_RE = /^eq\(context\.(.+?),\s*"(.*)"\)$/
+const STRING_COMPARE_RE = /^(?:eq|neq)\(context\.(.+?),\s*"(.*)"\)$/
 const PATH_RE = /^context\.(.+)$/
 
 function extractCondition(expr: string | undefined, vars: TemplateVariable[]) {
   if (!expr) throw new Error("Missing condition expression")
-  const eqMatch = expr.match(EQ_RE)
-  if (eqMatch) {
-    vars.push({ path: eqMatch[1]!, type: "string" })
+  const stringCompareMatch = expr.match(STRING_COMPARE_RE)
+  if (stringCompareMatch) {
+    vars.push({ path: stringCompareMatch[1]!, type: "string" })
     return
   }
   const pathMatch = expr.match(PATH_RE)

render.ts

@@ -14,7 +14,7 @@ import { TextDecoder } from "node:util"
 const IF_PATH_RE = /^<@if\((.+?)\)>(.*)$/
 const VAR_RE = /<@var\(context\.(.+?)(?::(\w+))?\)>/g
 const DIRECTIVE_RE = /<@(if|elseif|else|endif)(?:\((.+?)\))?>/g
-const EQ_RE = /^eq\(context\.(.+?),\s*"(.*)"\)$/
+const STRING_COMPARE_RE = /^(eq|neq)\(context\.(.+?),\s*"(.*)"\)$/
 const PATH_RE = /^context\.(.+)$/
 
 export type ReverseMapToken = {
@@ -68,9 +68,10 @@ type RenderState = {
 
 function evalCondition(expr: string | undefined, context: Record<string, unknown>): boolean {
   if (!expr) throw new Error("Missing condition expression")
-  const eqMatch = expr.match(EQ_RE)
-  if (eqMatch) {
-    return resolveContext(context, eqMatch[1]!) === eqMatch[2]
+  const stringCompareMatch = expr.match(STRING_COMPARE_RE)
+  if (stringCompareMatch) {
+    const result = resolveContext(context, stringCompareMatch[2]!) === stringCompareMatch[3]
+    return stringCompareMatch[1] === "eq" ? result : !result
   }
   const pathMatch = expr.match(PATH_RE)
   if (pathMatch) {
@@ -139,6 +140,17 @@ function addReverseMapToken(
   state.manifest.tokens[token.result] = tokens
 }
 
+function addFlatToken(
+  state: RenderState | undefined,
+  result: string,
+  token: string,
+) {
+  if (!state?.manifest) return
+  const tokens = state.manifest.tokens[result] ?? []
+  if (!tokens.includes(token)) tokens.push(token)
+  state.manifest.tokens[result] = tokens
+}
+
 function getReverseMapPath(destRoot: string, reverseMap: true | string): string {
   if (reverseMap === true) return resolveOutputPath(destRoot, ".tdir-map.json")
   return resolveOutputPath(destRoot, reverseMap)
@@ -384,6 +396,12 @@ function renderContentWithMap(
   state?: RenderState,
   file?: ReverseMapFile,
 ): string {
+  for (const match of content.matchAll(VAR_RE)) {
+    const token = match[0]
+    const path = match[1]!
+    addFlatToken(state, String(resolveContext(context, path) ?? ""), token)
+  }
+
   const processedResult = processIfBlocksWithMap(content, context)
   const processed = processedResult.content
   for (const token of processedResult.conditionalTokens) {

reverse.ts

@@ -245,6 +245,19 @@ function writeSkippedTemplate(
   return 1
 }
 
+function replaceFlatTokens(content: string, manifest: ReverseMapManifest): string {
+  const entries = Object.entries(manifest.tokens)
+    .filter(([, tokens]) => tokens.length > 0)
+    .sort(([a], [b]) => b.length - a.length)
+
+  let result = content
+  for (const [rendered, tokens] of entries) {
+    if (rendered === "") continue
+    result = result.split(rendered).join(tokens[0]!)
+  }
+  return result
+}
+
 function dirnamePath(path: string): string {
   const normalized = normalizePath(path)
   const index = normalized.lastIndexOf("/")
@@ -340,6 +353,7 @@ function copyIncludedRenderedFiles(
   templateRoot: string,
   includedOutputPaths: string[],
   directoryMap: Map<string, string>,
+  manifest: ReverseMapManifest,
 ): number {
   let filesWritten = 0
 
@@ -347,7 +361,12 @@ function copyIncludedRenderedFiles(
     const renderedPath = resolveInside(renderedRoot, outputPath)
     const templatePath = resolveInside(templateRoot, inferTemplatePath(outputPath, directoryMap))
     mkdirSync(dirname(templatePath), { recursive: true })
+    const content = readFileSync(renderedPath)
+    if (isUtf8Text(content)) {
+      writeFileSync(templatePath, replaceFlatTokens(content.toString("utf-8"), manifest))
+    } else {
       copyFileSync(renderedPath, templatePath)
+    }
     filesWritten += 1
   }
 
@@ -440,6 +459,7 @@ export function reverseDir(
     templateRoot,
     includedOutputPaths,
     directoryMap,
+    manifest,
   )
 
   return { filesWritten, warnings }

testdata/neq_in_file/test.txt

@@ -0,0 +1 @@
+<@if(neq(context.test,"test"))>not-test<@else>test<@endif>

testdata/neq_in_path/<@if(neq(context.test,"test"))>not-test

@@ -0,0 +1 @@
+not test