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@@ -51,6 +51,13 @@ proc newServer*(address: string = "127.0.0.1",
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)
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+proc toStr*(node: JsonNode): string =
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+ if node.kind == JString:
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+ return node.getStr
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+ else:
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+ return $node
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+
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+
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proc loadtemplate*(name: string, json: JsonNode = %*{}): Future[string] {.async, inline.} =
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## Loads HTML template from `templates` folder.
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##
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@@ -61,6 +68,8 @@ proc loadtemplate*(name: string, json: JsonNode = %*{}): Future[string] {.async,
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## Replaces:
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## - $(key) -> value
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## - if $(key) { ... } -> ... (if value is true)
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+ ## - if not $(key) { ... } -> ... (if value is false)
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+ ## - for i in 0..$(key) { ... } -> ........., etc
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var
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file = openAsync(("templates" / name) & ".html")
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readed = await file.readAll()
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@@ -68,12 +77,15 @@ proc loadtemplate*(name: string, json: JsonNode = %*{}): Future[string] {.async,
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for key, value in json.pairs:
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# ---- regex patterns ---- #
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let
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- # variable statment, e.g.: $(variable)
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+ # variable statement, e.g.: $(variable)
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variable_stmt = re("(\\$\\s*\\(" & key & "\\))")
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- # if statment, e.g.: if $(variable) {......}
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+ # if statement, e.g.: if $(variable) {......}
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if_stmt = re("if\\s*(\\$\\s*\\(" & key & "\\))\\s*\\{\\s*([\\s\\S]+?)\\s*\\}")
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- # if not statment, e.g.: if not $(variable) {......}
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+ # if not statement, e.g.: if not $(variable) {......}
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if_notstmt = re("if\\s*not\\s*(\\$\\s*\\(" & key & "\\))\\s*\\{\\s*([\\s\\S]+?)\\s*\\}")
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+ # for statement, e.g.: for i in 0..$(variable) {hello, $variable[i]}
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+ forstmt = re(
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+ "for\\s*([\\S]+)\\s*in\\s*(\\d+)\\.\\.(\\$\\s*\\(" & key & "\\))\\s*\\{\\s*([\\s\\S]+?)\\s*\\}")
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# ---- converts value to bool ---- #
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var value_bool = false
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@@ -109,7 +121,19 @@ proc loadtemplate*(name: string, json: JsonNode = %*{}): Future[string] {.async,
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readed = readed.replacef(if_notstmt, "")
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else:
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readed = readed.replacef(if_notstmt, "$2")
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- readed = readed.replacef(variable_stmt, $value)
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+ var
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+ matches: array[20, string]
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+ now = 0
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+ while readed.contains(forstmt):
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+ let
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+ (start, stop) = readed.findBounds(forstmt, matches, now)
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+ elem = re("(\\$" & key & "\\[" & matches[0] & "\\])")
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+ var output = ""
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+ for i in parseInt(matches[1])..<value.len:
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+ output &= matches[3].replacef(elem, value[i].toStr)
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+ readed = readed[0..start-1] & output & readed[stop+1..^1]
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+ now += stop
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+ readed = readed.replacef(variable_stmt, value.toStr)
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return readed
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