1 files changed, 84 insertions, 0 deletions
diff --git a/rust/src/api_helpers.rs b/rust/src/api_helpers.rs
index f0f56a6b..ef07ee55 100644
--- a/rust/src/api_helpers.rs
+++ b/rust/src/api_helpers.rs
@@ -5,6 +5,8 @@ use diesel;
 use diesel::prelude::*;
 use errors::*;
 use uuid::Uuid;
+use regex::Regex;
+
 
 pub fn get_or_create_editgroup(editor_id: Uuid, conn: &PgConnection) -> Result<Uuid> {
     // check for current active
@@ -109,3 +111,85 @@ pub fn uuid2fcid(id: &Uuid) -> String {
     let raw = id.as_bytes();
     BASE32_NOPAD.encode(raw).to_lowercase()
 }
+
+pub fn check_pmcid(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex = Regex::new(r"^PMC\d+$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid PubMed Central ID (PMCID): '{}' (expected, eg, 'PMC12345')", raw)
+        ).into())
+    }
+}
+
+pub fn check_pmid(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex  = Regex::new(r"^\d+$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid PubMed ID (PMID): '{}' (expected, eg, '1234')", raw)
+        ).into())
+    }
+}
+
+pub fn check_wikidata_qid(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex  = Regex::new(r"^Q\d+$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid Wikidata QID: '{}' (expected, eg, 'Q1234')", raw)
+        ).into())
+    }
+}
+
+pub fn check_doi(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex  = Regex::new(r"^10.\d{3,6}/.+$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid DOI: '{}' (expected, eg, '10.1234/aksjdfh')", raw)
+        ).into())
+    }
+}
+
+pub fn check_issn(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex  = Regex::new(r"^\d{4}-\d{3}[0-9X]$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid ISSN: '{}' (expected, eg, '1234-5678')", raw)
+        ).into())
+    }
+}
+
+pub fn check_orcid(raw: &str) -> Result<()> {
+    lazy_static! {
+        static ref RE: Regex  = Regex::new(r"^\d{4}-\d{4}-\d{4}-\d{4}$").unwrap();
+    }
+    if RE.is_match(raw) {
+        Ok(())
+    } else {
+        Err(ErrorKind::MalformedExternalId(
+            format!("not a valid ORCID: '{}' (expected, eg, '0123-4567-3456-6789')", raw)
+        ).into())
+    }
+}
+
+// TODO: make the above checks "more correct"
+// TODO: check ISBN-13
+// TODO: check hashes (SHA-1, etc)