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✨ add helpers
regex_captures and regex_is_match
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| use handlebars::{Context, Handlebars, Helper, HelperDef, RenderContext, RenderError, ScopedJson}; | ||
| use regex::Regex; | ||
|
|
||
| #[allow(non_camel_case_types)] | ||
| pub struct regex_captures_fct; | ||
|
|
||
| impl HelperDef for regex_captures_fct { | ||
| fn call_inner<'reg: 'rc, 'rc>( | ||
| &self, | ||
| h: &Helper<'rc>, | ||
| _: &'reg Handlebars, | ||
| _: &'rc Context, | ||
| _: &mut RenderContext<'reg, 'rc>, | ||
| ) -> Result<ScopedJson<'reg>, RenderError> { | ||
| let on = h | ||
| .hash_get("on") | ||
| .and_then(|v| v.value().as_str()) | ||
| .unwrap_or_default(); | ||
| let pattern = h | ||
| .hash_get("pattern") | ||
| .and_then(|v| v.value().as_str()) | ||
| .unwrap_or_default(); | ||
| let re = Regex::new(pattern).map_err(|err| crate::to_other_error(err.to_string()))?; | ||
| if let Some(caps) = re.captures(on) { | ||
| let collected = re | ||
| .capture_names() | ||
| .filter_map(|v| { | ||
| v.and_then(|name| { | ||
| caps.name(name).map(|m| { | ||
| ( | ||
| name.to_string(), | ||
| serde_json::Value::String(m.as_str().to_string()), | ||
| ) | ||
| }) | ||
| }) | ||
| }) | ||
| .chain(caps.iter().enumerate().filter_map(|(i, mm)| { | ||
| mm.map(|m| { | ||
| ( | ||
| format!("_{}", i), | ||
| serde_json::Value::String(m.as_str().to_string()), | ||
| ) | ||
| }) | ||
| })) | ||
| .collect::<serde_json::Map<_, _>>(); | ||
| Ok(ScopedJson::Derived(serde_json::Value::Object(collected))) | ||
| } else { | ||
| Ok(ScopedJson::Derived(serde_json::Value::Null)) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[allow(non_camel_case_types)] | ||
| pub struct regex_is_match_fct; | ||
|
|
||
| impl HelperDef for regex_is_match_fct { | ||
| fn call_inner<'reg: 'rc, 'rc>( | ||
| &self, | ||
| h: &Helper<'rc>, | ||
| _: &'reg Handlebars, | ||
| _: &'rc Context, | ||
| _: &mut RenderContext<'reg, 'rc>, | ||
| ) -> Result<ScopedJson<'reg>, RenderError> { | ||
| let on = h | ||
| .hash_get("on") | ||
| .and_then(|v| v.value().as_str()) | ||
| .unwrap_or_default(); | ||
| let pattern = h | ||
| .hash_get("pattern") | ||
| .and_then(|v| v.value().as_str()) | ||
| .unwrap_or_default(); | ||
| let re = Regex::new(pattern).map_err(|err| crate::to_other_error(err.to_string()))?; | ||
| Ok(ScopedJson::Derived(serde_json::Value::Bool( | ||
| re.is_match(on), | ||
| ))) | ||
| } | ||
| } | ||
|
|
||
| pub fn register(handlebars: &mut Handlebars) { | ||
| handlebars.register_helper("regex_captures", Box::new(regex_captures_fct)); | ||
| handlebars.register_helper("regex_is_match", Box::new(regex_is_match_fct)); | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use crate::assert_renders; | ||
| use std::error::Error; | ||
|
|
||
| #[test] | ||
| fn test_regex_captures() -> Result<(), Box<dyn Error>> { | ||
| assert_renders![ | ||
| (r##"{{ regex_captures pattern="foo" on="" }}"##, r##""##), | ||
| ( | ||
| r##"{{ regex_captures pattern="(?<first>\\w)(\\w)(?:\\w)\\w(?<last>\\w)" on="today" }}"##, | ||
| r##"[object]"## | ||
| ), | ||
| ( | ||
| r##"{{ json_to_str( regex_captures pattern="(?<first>\\w)(\\w)(?:\\w)\\w(?<last>\\w)" on="today" ) }}"##, | ||
| r##"{"_0":"today","_1":"t","_2":"o","_3":"y","first":"t","last":"y"}"## | ||
| ), | ||
| ( | ||
| r##"{{ set captures=( regex_captures pattern="(?<first>\\w)(\\w)(?:\\w)\\w(?<last>\\w)" on="today" ) }}{{ captures.last }}"##, | ||
| r##"y"## | ||
| ), | ||
| ] | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_regex_is_match() -> Result<(), Box<dyn Error>> { | ||
| assert_renders![ | ||
| ( | ||
| r##"{{ regex_is_match pattern="foo" on="" }}"##, | ||
| r##"false"## | ||
| ), | ||
| ( | ||
| r##"{{ regex_is_match pattern="(?<first>\\w)(\\w)(?:\\w)\\w(?<last>\\w)" on="today" }}"##, | ||
| r##"true"## | ||
| ), | ||
| ( | ||
| r##"{{#if (regex_is_match pattern="(?<first>\\w)(\\w)(?:\\w)\\w(?<last>\\w)" on="today" ) }}ok{{/if}}"##, | ||
| r##"ok"## | ||
| ), | ||
| ] | ||
| } | ||
| } |