Function parseVersion [src]

Similar to SemanticVersion.parse, but with following changes: Leading zeroes are allowed. Supports only 2 or 3 version components (major, minor, [patch]). If 3-rd component is omitted, it will be 0.

Prototype

pub fn parseVersion(ver: []const u8) error{ InvalidVersion, Overflow }!SemanticVersion

Parameters

ver: []const u8

Possible Errors

InvalidVersion

Overflow

Example

 test parseVersion {
    try std.testing.expectError(error.InvalidVersion, parseVersion("1"));
    try std.testing.expectEqual(SemanticVersion{ .major = 1, .minor = 2, .patch = 0 }, try parseVersion("1.2"));
    try std.testing.expectEqual(SemanticVersion{ .major = 1, .minor = 2, .patch = 3 }, try parseVersion("1.2.3"));
    try std.testing.expectError(error.InvalidVersion, parseVersion("1.2.3.4"));
}

Source

  pub fn parseVersion(ver: []const u8) error{ InvalidVersion, Overflow }!SemanticVersion {
    const parseVersionComponentFn = (struct {
        fn parseVersionComponentInner(component: []const u8) error{ InvalidVersion, Overflow }!usize {
            return std.fmt.parseUnsigned(usize, component, 10) catch |err| switch (err) {
                error.InvalidCharacter => return error.InvalidVersion,
                error.Overflow => return error.Overflow,
            };
        }
    }).parseVersionComponentInner;
    var version_components = mem.splitScalar(u8, ver, '.');
    const major = version_components.first();
    const minor = version_components.next() orelse return error.InvalidVersion;
    const patch = version_components.next() orelse "0";
    if (version_components.next() != null) return error.InvalidVersion;
    return .{
        .major = try parseVersionComponentFn(major),
        .minor = try parseVersionComponentFn(minor),
        .patch = try parseVersionComponentFn(patch),
    };
}  