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-rw-r--r--semver-parser/src/common.rs66
1 files changed, 0 insertions, 66 deletions
diff --git a/semver-parser/src/common.rs b/semver-parser/src/common.rs
deleted file mode 100644
index 267b4d9..0000000
--- a/semver-parser/src/common.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-use version::Identifier;
-use recognize::{Recognize, Alt, OneOrMore, Inclusive, OneByte};
-use std::str::from_utf8;
-
-// by the time we get here, we know that it's all valid characters, so this doesn't need to return
-// a result or anything
-fn parse_meta(s: &str) -> Vec<Identifier> {
- // Originally, I wanted to implement this method via calling parse, but parse is tolerant of
- // leading zeroes, and we want anything with leading zeroes to be considered alphanumeric, not
- // numeric. So the strategy is to check with a recognizer first, and then call parse once
- // we've determined that it's a number without a leading zero.
- s.split(".")
- .map(|part| {
- // another wrinkle: we made sure that any number starts with a
- // non-zero. But there's a problem: an actual zero is a number, yet
- // gets left out by this heuristic. So let's also check for the
- // single, lone zero.
- if is_alpha_numeric(part) {
- Identifier::AlphaNumeric(part.to_string())
- } else {
- // we can unwrap here because we know it is only digits due to the regex
- Identifier::Numeric(part.parse().unwrap())
- }
- }).collect()
-}
-
-// parse optional metadata (preceded by the prefix character)
-pub fn parse_optional_meta(s: &[u8], prefix_char: u8)-> Result<(Vec<Identifier>, usize), String> {
- if let Some(len) = prefix_char.p(s) {
- let start = len;
- if let Some(len) = letters_numbers_dash_dot(&s[start..]) {
- let end = start + len;
- Ok((parse_meta(from_utf8(&s[start..end]).unwrap()), end))
- } else {
- Err("Error parsing prerelease".to_string())
- }
- } else {
- Ok((Vec::new(), 0))
- }
-}
-
-pub fn is_alpha_numeric(s: &str) -> bool {
- if let Some((_val, len)) = numeric_identifier(s.as_bytes()) {
- // Return true for number with leading zero
- // Note: doing it this way also handily makes overflow fail over.
- len != s.len()
- } else {
- true
- }
-}
-
-// Note: could plumb overflow error up to return value as Result
-pub fn numeric_identifier(s: &[u8]) -> Option<(u64, usize)> {
- if let Some(len) = Alt(b'0', OneOrMore(Inclusive(b'0'..b'9'))).p(s) {
- from_utf8(&s[0..len]).unwrap().parse().ok().map(|val| (val, len))
- } else {
- None
- }
-}
-
-pub fn letters_numbers_dash_dot(s: &[u8]) -> Option<usize> {
- OneOrMore(OneByte(|c| c == b'-' || c == b'.' ||
- (b'0' <= c && c <= b'9') ||
- (b'a' <= c && c <= b'z') ||
- (b'A' <= c && c <= b'Z'))).p(s)
-}