Files for converting from mvc views to razor pages

HtmlHelper to tag-helper regexes.txt

These are regular expressions for finding and replacing ASP.NET HTML Helpers with tag-helpers. 
This could probably be combined with the pagify.py script to run all of these automatically.

@Html.LabelFor\(model => model.([\w_]+), htmlAttributes: new { @class = ("[^"]+") }\)
<label asp-for="$1" class=$2></label>

@Html.LabelFor\(model => model.([\w_]+), "([^"]+)", htmlAttributes: new { @class = ("[^"]+") }\)
<label asp-for="$1" class=$3>$2</label>

@Html.EditorFor\(model => model.([\w_]+), new { htmlAttributes = new { @class = ("[^"]+") } }\)
<input asp-for="$1" class=$2 />

@Html.DropDownList\("([\w_]+)", ([^,]+), htmlAttributes: new { @class = ("[^"]+") }\)
<select asp-for="$1" asp-items="$2" class=$3></select>

@Html.DropDownList\("([\w_]+)", ([^,]+), "([^"]+)", htmlAttributes: new { @class = ("[^"]+") }\)
<select asp-for="$1" asp-items="$2" class=$4><option value="">$3</option></select>

@Html.TextAreaFor\(model => model.([\w_]+), (\d+), (\d+), new { @class = ("[^"]+") }\)
<textarea asp-for="$1" rows="$2" cols="$3" class=$4></textarea>

@Html.ValidationMessageFor\(model => model.([\w_]+), "", new { @class = ("[^"]+") }\)
<span asp-validation-for="$1" class=$2></span>


@Html.RouteLink\("([^"]+)", "([^"]+)"\)
@Html.ActionLink\("([^"]+)", "([^"]+)", "([^"]+)"\)
@Html.ActionLink\("([^"]+)", "([^"]+)", "([^"]+)", null, null\)
<a asp-page="/$3/$2">$1</a>

href="@Url.Action\("([^"]+)", "([^"]+)", new { ?area = ("[^"]+") }\)"
asp-page="/$2/$1" asp-area=$3

@Html.ActionLink\("([^"]+)", "([^"]+)", "([^"]+)", new { area = ("[^"]+") }, new { @class = ("[^"]+") }\)
<a asp-page="/$3/$2" asp-area=$4 class=$5>$1</a>

@Html.RouteLink\("([^"]+)", "([^"]+)", null, new { @class = ("[^"]+") }\)
<a asp-page="/$2" class=$3>$1</a>

@Html.ActionLink\("([\w\s]+)", "(\w+)", "(\w+)", null, new { @class = ("[\w-]+") }\)
<a asp-page="/$3/$2" class=$4>$1</a>

@Html.ActionLink\("([\w\s]+)", "(\w+)", "(\w+)", new { (\w+) = (\S+) }, null\)
<a asp-page="/$3/$2" asp-route-$4="@$5">$1</a>

pagify.py

# prepend all .cshtml files with @page
import glob
for filename in glob.iglob('**/*.cshtml', recursive=True):
    if (filename.startswith('_') or filename.contains('/_')): continue
    with open(filename, 'r', encoding="utf8") as original: data = original.read()
    
    if (not data.startswith('\ufeff@page')):
        with open(filename, 'w', encoding="utf8") as modified:
            modified.seek(1)
            modified.write("@page\n" + data)