add parser for pre_release version

.gitea/workflows/build.yaml

@@ -0,0 +1,34 @@
+name: Build
+run-name: ${{ gitea.actor }} is building 
+on: [push]
+
+jobs:
+
+  release:
+    name: ${{ matrix.target }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-linux-musl
+          - target: x86_64-linux-gnu
+          - target: x86_64-windows
+    steps:
+      - run: printenv
+      - name: Check out repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: ''
+      - run: wget http://172.17.0.1:8081/repository/ziglang.org/download/0.14.1/zig-x86_64-linux-0.14.1.tar.xz
+      - run: tar xfv zig-x86_64-linux-0.14.1.tar.xz
+      - run: ./zig-x86_64-linux-0.14.1/zig build -Doptimize=ReleaseSmall -Dtarget=${{ matrix.target }} -Dexe_name=zig-totp-$GITHUB_REF_NAME-${{ matrix.target }}
+      - name: upload artifacts 
+        uses: actions/upload-artifact@v3
+        with: 
+          name: zig-totp-${{matrix.target }}
+          path: zig-out
+        
+
+

build.zig

@@ -22,8 +22,10 @@ pub fn build(b: *std.Build) void {
     // set a preferred release mode, allowing the user to decide how to optimize.
     const optimize = b.standardOptimizeOption(.{});
 
+    const exe_name = b.option([]const u8, "exe_name", "Name of the executable") orelse "zig-totp";
+
     const lib = b.addStaticLibrary(.{
-        .name = "zig-totp",
+        .name = exe_name,
         // In this case the main source file is merely a path, however, in more
         // complicated build scripts, this could be a generated file.
         .root_source_file = b.path("src/root.zig"),
@@ -37,7 +39,7 @@ pub fn build(b: *std.Build) void {
     b.installArtifact(lib);
 
     const exe = b.addExecutable(.{
-        .name = "zig-totp",
+        .name = exe_name,
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
@@ -122,6 +124,21 @@ fn getVersion(b: *std.Build) std.SemanticVersion {
             }
             return totp_version;
         },
+        1 => {
+            // prerelease version: 1.0.0-dev
+            var iter = std.mem.splitScalar(u8, output_trimmed, '-');
+            const tag = iter.first();
+            const pre_release = iter.next().?;
+
+            const v: std.SemanticVersion = std.SemanticVersion.parse(tag) catch unreachable;
+
+            return .{
+                .major = v.major,
+                .minor = v.minor,
+                .patch = v.patch,
+                .pre = b.fmt("{s}", .{pre_release}),
+            };
+        },
         2 => {
             // development version, e.g. 1.0.0-7-64es356
             var iter = std.mem.splitScalar(u8, output_trimmed, '-');