This utility extracts translatable strings from the C# code, Razor templates and Liquid templates to POT (portable object template) files. It is designed to follow conventions used in the OrchardCore project.

dotnet PoExtractor.dll inputpath outputpath

Extracts all translatable strings from projects at the specified input path and saves generated POT files at the specified output path. It creates one POT file per a project.

Use dotnet PoExtractor.dll inputpath outputpath --liquid to include translations from .liquid files (requires Fluid.Core 1.0.0-beta-9501 or newer)

PoExtractor assumes, the code follows several conventions:

• IStringLocalizer or a derived class is accessed via property named T
• Liquid templates uses a filter named t
• context of the localizable string is full name (with namespace) of the containing class for C# code
• context of the localizable string is dot-delimited relative path the to view for Razor templates
• context of the localizable string is dot-delimited relative path the to template for Liquid templates

C# code:

namespace OrchardCore.ContentFields.Fields { 
    public class LinkFieldDisplayDriver : ContentFieldDisplayDriver<LinkField> {
        public LinkFieldDisplayDriver(IStringLocalizer<LinkFieldDisplayDriver> localizer) {
            T = localizer;
        }

        public IStringLocalizer T { get; set; }
        
        public override async Task<IDisplayResult> UpdateAsync(LinkField field, IUpdateModel updater, UpdateFieldEditorContext context) {
            bool modelUpdated = await updater.TryUpdateModelAsync(field, Prefix, f => f.Url, f => f.Text);

            if (modelUpdated)
            {
                var settings = context.PartFieldDefinition.Settings.ToObject<LinkFieldSettings>();

                if (settings.Required && String.IsNullOrWhiteSpace(field.Url))
                {
                    updater.ModelState.AddModelError(Prefix, T["The url is required for {0}.", context.PartFieldDefinition.DisplayName()]);
                }
            }

            return Edit(field, context);
        }
    }
}

Razor view:

@model OrchardCore.ContentFields.ViewModels.EditLinkFieldViewModel

<div class="row">
    <fieldset class="form-group col-md-12">
        <label asp-for="Url">@Model.PartFieldDefinition.DisplayName()</label>
    </fieldset>
    <fieldset class="form-group col-md-6" asp-validation-class-for="Url">
        <input asp-for="Url" class="form-control content-preview-text" placeholder="@settings.UrlPlaceholder" required="@isRequired" />
    </fieldset>
    <fieldset class="form-group col-md-6" asp-validation-class-for="Text">
        <label asp-for="Text" @if (settings.LinkTextMode == LinkTextMode.Required) { <text> class="required" </text>  }>@T["Link text"]</label>
        <input asp-for="Text" type="text" class="form-control content-preview-text" placeholder="@settings.TextPlaceholder" required="@isTextRequired" />
    </fieldset>
</div>

Liquid template:

div class="page-heading">
   <h1>{{ "Page Not Found" | t }}</h1>
/div>

Generated POT file:

#: OrchardCore.ContentFields\Drivers\LinkFieldDriver.cs:59
#. updater.ModelState.AddModelError(Prefix, T["The url is required for {0}.", context.PartFieldDefinition.DisplayName()]);
msgctxt "OrchardCore.ContentFields.Fields.LinkFieldDisplayDriver"
msgid "The url is required for {0}."
msgstr ""

#: OrchardCore.ContentFields\Views\LinkField.Edit.cshtml:32
#. <label asp-for="Text" @if (settings.LinkTextMode == LinkTextMode.Required) { <text> class="required" </text>  }>@T["Link text"]</label>
msgctxt "OrchardCore.ContentFields.Views.LinkField.Edit"
msgid "Link text"
msgstr ""

#: TheBlogTheme\Views\Shared\NotFound.liquid:0
msgctxt "TheBlogTheme.Views.Shared.NotFound"
msgid "Page Not Found"
msgstr ""