From c8f50e0f0659d91a4bb8d6b22f5f8768490e6d65 Mon Sep 17 00:00:00 2001
From: Meghan Denny <meghan@unicycle.co>
Date: Mon, 19 Jul 2021 06:45:48 -0700
Subject: [PATCH] add `generate.zig`

---
 build.zig    | 18 +++++++++++++
 generate.zig | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 zig.mod      |  5 +++-
 zigmod.lock  |  7 ++++++
 zigmod.sum   |  6 +++++
 5 files changed, 106 insertions(+), 1 deletion(-)
 create mode 100644 generate.zig
 create mode 100644 zigmod.lock
 create mode 100644 zigmod.sum

diff --git a/build.zig b/build.zig
index da571d971404e6d13064ed35ea593d15c75409ec..11d18262368447f65df3e81927ab709237fb8cba 100644
--- a/build.zig
+++ b/build.zig
@@ -1,4 +1,5 @@
 const std = @import("std");
+const deps = @import("./deps.zig");
 
 pub fn build(b: *std.build.Builder) void {
     // Standard target options allows the person running `zig build` to choose
@@ -24,4 +25,21 @@ pub fn build(b: *std.build.Builder) void {
 
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
+
+    //
+
+    const exe2 = b.addExecutable("generate", "generate.zig");
+    exe2.setTarget(target);
+    exe2.setBuildMode(mode);
+    deps.addAllTo(exe2);
+    exe2.install();
+
+    const run_cmd2 = exe2.run();
+    run_cmd2.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd2.addArgs(args);
+    }
+
+    const run_step2 = b.step("gen", "generate the list");
+    run_step2.dependOn(&run_cmd2.step);
 }
diff --git a/generate.zig b/generate.zig
new file mode 100644
index 0000000000000000000000000000000000000000..31331dd29e17f41c7547436fb6ef241cf12a8ee9
--- /dev/null
+++ b/generate.zig
@@ -0,0 +1,71 @@
+//! Run this with `zig build gen`
+
+const std = @import("std");
+const zfetch = @import("zfetch");
+const json = @import("json");
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const alloc = &gpa.allocator;
+
+    const f = try std.fs.cwd().createFile("src/lib.zig", .{});
+    const w = f.writer();
+
+    {
+        std.log.info("spdx", .{});
+        const val = try simple_fetch(alloc, "https://raw.githubusercontent.com/spdx/license-list-data/master/json/licenses.json");
+
+        try w.writeAll("// SPDX License Data generated from https://github.com/spdx/license-list-data\n");
+        try w.writeAll("//\n");
+        try w.print("// Last generated from version {s}\n", .{val.get("licenseListVersion").?.String});
+        try w.writeAll("//\n");
+
+        try w.writeAll("\n");
+        try w.writeAll(
+            \\pub const License = struct {
+            \\    isOsiApproved: bool,
+            \\    url: []const u8,
+            \\};
+            \\
+        );
+
+        var licenses = val.get("licenses").?.Array;
+        std.sort.sort(json.Value, licenses, {}, spdxlicenseLessThan);
+
+        try w.writeAll("\n");
+        try w.writeAll("pub const spdx = struct {\n");
+        for (licenses) |lic| {
+            try w.print("    pub const @\"{s}\" = License{{.isOsiApproved = {}, .url = \"{s}\"}};\n", .{
+                lic.get("licenseId").?.String,
+                lic.get("isOsiApproved").?.Bool,
+                lic.get("seeAlso").?.Array[0].String,
+            });
+        }
+        try w.writeAll("};\n");
+
+        try w.writeAll("\n");
+        try w.writeAll("pub const osi = &[_][]const u8{\n");
+        for (licenses) |lic| {
+            if (!lic.get("isOsiApproved").?.Bool) continue;
+            try w.print("    \"{s}\",\n", .{lic.get("licenseId").?.String});
+        }
+        try w.writeAll("};\n");
+    }
+}
+
+pub fn simple_fetch(alloc: *std.mem.Allocator, url: []const u8) !json.Value {
+    const req = try zfetch.Request.init(alloc, url, null);
+    defer req.deinit();
+    try req.do(.GET, null, null);
+    const r = req.reader();
+    const body_content = try r.readAllAlloc(alloc, std.math.maxInt(usize));
+    const val = try json.parse(alloc, body_content);
+    return val;
+}
+
+fn spdxlicenseLessThan(context: void, lhs: json.Value, rhs: json.Value) bool {
+    _ = context;
+    const l = lhs.get("licenseId").?.String;
+    const r = rhs.get("licenseId").?.String;
+    return std.mem.lessThan(u8, l, r);
+}
diff --git a/zig.mod b/zig.mod
index 93eebaea604dc156291e34f94ce971c88f23bfa7..7e22ffea99b05198a680a701f0505fa44c995d5f 100644
--- a/zig.mod
+++ b/zig.mod
@@ -2,4 +2,7 @@ id: 0npcrzfdlrvkf44mzjo8bduj9gmqyefo0j3rstt6b0pm2r6r
 name: licenses
 main: src/lib.zig
 license: MIT
-dependencies:
+
+dev_dependencies:
+  - src: git https://github.com/truemedian/zfetch
+  - src: git https://github.com/nektro/zig-json
diff --git a/zigmod.lock b/zigmod.lock
new file mode 100644
index 0000000000000000000000000000000000000000..123ab4ebd7e94bbd0abcdf067d24790fc842478b
--- /dev/null
+++ b/zigmod.lock
@@ -0,0 +1,7 @@
+2
+git https://github.com/truemedian/zfetch commit-8bbc7b34cd417794841e1432585334bc969dfe83
+git https://github.com/truemedian/hzzp commit-2d30bddae3bf1eaecde5144490307604efe76f2a
+git https://github.com/alexnask/iguanaTLS commit-0d39a361639ad5469f8e4dcdaea35446bbe54b48
+git https://github.com/MasterQ32/zig-network commit-b9c91769d8ebd626c8e45b2abb05cbc28ccc50da
+git https://github.com/MasterQ32/zig-uri commit-52cdd2061bec0579519f0d30280597f3a1db8b75
+git https://github.com/nektro/zig-json commit-72e555fbc0776f2600aee19b01e5ab1855ebec7a
diff --git a/zigmod.sum b/zigmod.sum
new file mode 100644
index 0000000000000000000000000000000000000000..2f2804269b18fc1979c2c3b5e87dbeddfd414163
--- /dev/null
+++ b/zigmod.sum
@@ -0,0 +1,6 @@
+blake3-e3072f7fb47e86d53c9a1879e254ba1af55941153fd5f6752ec659b2f14854c9 git/github.com/truemedian/zfetch
+blake3-98982125d0fbedc62e179e62081d2797a2b8a3623c42f9fd5d72cd56d6350714 git/github.com/truemedian/hzzp
+blake3-e6901bd7432450d5b22b01880cc7fa3fa2433e766a527206f18b29c67c1349bb git/github.com/alexnask/iguanaTLS
+blake3-21f91e48333ac0ca7f4704c96352831c25216e7056d02ce24de95d03fc942246 git/github.com/MasterQ32/zig-network
+blake3-030ebb03f1ed21122e681b06786bea6f2f1b810e8eb9f2029d0eee4f4fb3103f git/github.com/MasterQ32/zig-uri
+blake3-1893709ffc6359c5f9cd2f9409abccf78a94ed37bb2c6dd075c603356d17c94b git/github.com/nektro/zig-json
-- 
2.54.0