diff options
Diffstat (limited to 'src/app.nim')
| -rw-r--r-- | src/app.nim | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/app.nim b/src/app.nim index 80c0502..b321a23 100644 --- a/src/app.nim +++ b/src/app.nim @@ -6,6 +6,7 @@ const AllowedImageExtensions = ["png", "jpg", "jpeg", "gif", "webp", "svg"] ValidPaperSizes = ["a4paper", "letterpaper", "legalpaper"] ValidMargins = ["0.75in", "1in", "1.25in", "1.5in"] + ValidLineSpacings = ["1", "1.5", "2"] const AppName = "likha-pdf" @@ -229,7 +230,7 @@ proc respondFile(req: Request; filePath: string; asAttachment: bool = false; att await req.respond(Http200, readFile(filePath), headers) # pandoc does the heavy lifting -proc runPandoc(sourceMarkdown: string; outputPath: string; paperSize: string; margin: string; mainFont: string): tuple[ok: bool, output: string, missingPandoc: bool] = +proc runPandoc(sourceMarkdown: string; outputPath: string; paperSize: string; margin: string; mainFont: string; lineSpacing: string; showPageNumbers: bool): tuple[ok: bool, output: string, missingPandoc: bool] = let tempDir = getTempDir() / (AppName & "-" & randomHex(10)) createDir(tempDir) let tempMarkdownPath = tempDir / "source.md" @@ -247,7 +248,7 @@ proc runPandoc(sourceMarkdown: string; outputPath: string; paperSize: string; ma # if preprocessing fails, fall back to original content writeFile(tempMarkdownPath, sourceMarkdown) - let args = @[ + var args = @[ tempMarkdownPath, "--from", "markdown+emoji+hard_line_breaks", "--pdf-engine=lualatex", @@ -255,10 +256,15 @@ proc runPandoc(sourceMarkdown: string; outputPath: string; paperSize: string; ma "-V", "papersize=" & paperSize, "-V", "margin=" & margin, "-V", "mainfont=" & mainFont, + "-V", "linespacing=" & lineSpacing, "--resource-path", baseDir() & ":" & uploadsDir() & ":" & tempDir, "-o", outputPath ] + if not showPageNumbers: + args.add("-V") + args.add("hidepages=true") + var process: Process try: process = startProcess("pandoc", args = args, options = {poUsePath, poStdErrToStdOut}) @@ -301,11 +307,13 @@ proc handleConvert(req: Request) {.async.} = mainFontFamily = "serif" let mainFont = if mainFontFamily == "sans": "TeX Gyre Heros" else: "TeX Gyre Pagella" + let lineSpacing = pickOption(formData.getOrDefault("line_spacing", ""), "1", ValidLineSpacings) + let showPageNumbers = formData.getOrDefault("page_numbers", "") == "on" let epoch = int(getTime().toUnix()) let outputName = AppName & "_" & $epoch & "_" & randomHex(32) & ".pdf" let outputPath = generatedDir() / outputName - let conversion = runPandoc(markdown, outputPath, paperSize, margin, mainFont) + let conversion = runPandoc(markdown, outputPath, paperSize, margin, mainFont, lineSpacing, showPageNumbers) if not conversion.ok: let message = if conversion.missingPandoc: |