Upgrade Zig to 0.15.2

compiled_starters/zig/codecrafters.yml

@@ -7,5 +7,5 @@ debug: false
 # Use this to change the Zig version used to run your code
 # on Codecrafters.
 #
-# Available versions: zig-0.15
-buildpack: zig-0.15
+# Available versions: zig-0.15.2
+buildpack: zig-0.15.2

compiled_starters/zig/src/main.zig

@@ -1,5 +1,8 @@
 const std = @import("std");
-var stdin = std.fs.File.stdin().readerStreaming(&.{});
+
+var stdin_buffer: [4096]u8 = undefined;
+var stdin_reader = std.fs.File.stdin().readerStreaming(&stdin_buffer);
+const stdin = &stdin_reader.interface;
 
 fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
     if (pattern.len == 1) {
@@ -27,12 +30,10 @@ pub fn main() !void {
 
     // TODO: Uncomment the code below to pass the first stage
     //
-    // var input_buffer: [1024]u8 = undefined;
-    // const input_len = try stdin.read(&input_buffer);
-    // const input_slice = input_buffer[0..input_len];
+    // const input_slice = try stdin.takeDelimiter('\n');
     //
     // const pattern = args[2];
-    // if (matchPattern(input_slice, pattern)) {
+    // if (matchPattern(input_slice.?, pattern)) {
     //     std.process.exit(0);
     // } else {
     //     std.process.exit(1);

dockerfiles/zig-0.15.2.Dockerfile

@@ -0,0 +1,30 @@
+# syntax=docker/dockerfile:1.7-labs
+FROM debian:bookworm
+
+RUN apt-get update && \
+    apt-get install --no-install-recommends -y xz-utils=5.4.1-1 && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Download and install Zig
+RUN curl -O https://ziglang.org/download/0.15.2/zig-x86_64-linux-0.15.2.tar.xz \
+    && tar -xf zig-x86_64-linux-0.15.2.tar.xz \
+    && mv zig-x86_64-linux-0.15.2 /usr/local/zig \
+    && rm zig-x86_64-linux-0.15.2.tar.xz
+
+# Add Zig to PATH
+ENV PATH="/usr/local/zig:${PATH}"
+
+ENV CODECRAFTERS_DEPENDENCY_FILE_PATHS="build.zig,build.zig.zon"
+
+WORKDIR /app
+
+# .git & README.md are unique per-repository. We ignore them on first copy to prevent cache misses
+COPY --exclude=.git --exclude=README.md . /app
+
+# This runs zig build
+RUN .codecrafters/compile.sh
+
+# Cache build directory
+RUN mkdir -p /app-cached
+RUN mv /app/.zig-cache /app-cached/.zig-cache || true

solutions/zig/01-cq2/code/codecrafters.yml

@@ -7,5 +7,5 @@ debug: false
 # Use this to change the Zig version used to run your code
 # on Codecrafters.
 #
-# Available versions: zig-0.15
-buildpack: zig-0.15
+# Available versions: zig-0.15.2
+buildpack: zig-0.15.2

solutions/zig/01-cq2/code/src/main.zig

@@ -1,5 +1,8 @@
 const std = @import("std");
-var stdin = std.fs.File.stdin().readerStreaming(&.{});
+
+var stdin_buffer: [4096]u8 = undefined;
+var stdin_reader = std.fs.File.stdin().readerStreaming(&stdin_buffer);
+const stdin = &stdin_reader.interface;
 
 fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
     if (pattern.len == 1) {
@@ -22,12 +25,10 @@ pub fn main() !void {
         std.process.exit(1);
     }
 
-    var input_buffer: [1024]u8 = undefined;
-    const input_len = try stdin.read(&input_buffer);
-    const input_slice = input_buffer[0..input_len];
+    const input_slice = try stdin.takeDelimiter('\n');
 
     const pattern = args[2];
-    if (matchPattern(input_slice, pattern)) {
+    if (matchPattern(input_slice.?, pattern)) {
         std.process.exit(0);
     } else {
         std.process.exit(1);

solutions/zig/01-cq2/diff/src/main.zig.diff

@@ -1,6 +1,7 @@
-@@ -1,40 +1,35 @@
- const std = @import("std");
- var stdin = std.fs.File.stdin().readerStreaming(&.{});
+@@ -3,39 +3,34 @@
+ var stdin_buffer: [4096]u8 = undefined;
+ var stdin_reader = std.fs.File.stdin().readerStreaming(&stdin_buffer);
+ const stdin = &stdin_reader.interface;
 
  fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
      if (pattern.len == 1) {
@@ -25,24 +26,20 @@
 
 -    // You can use print statements as follows for debugging, they'll be visible when running tests.
 -    std.debug.print("Logs from your program will appear here!\n", .{});
-+    var input_buffer: [1024]u8 = undefined;
-+    const input_len = try stdin.read(&input_buffer);
-+    const input_slice = input_buffer[0..input_len];
++    const input_slice = try stdin.takeDelimiter('\n');
 
 -    // TODO: Uncomment the code below to pass the first stage
 -    //
--    // var input_buffer: [1024]u8 = undefined;
--    // const input_len = try stdin.read(&input_buffer);
--    // const input_slice = input_buffer[0..input_len];
+-    // const input_slice = try stdin.takeDelimiter('\n');
 -    //
 -    // const pattern = args[2];
--    // if (matchPattern(input_slice, pattern)) {
+-    // if (matchPattern(input_slice.?, pattern)) {
 -    //     std.process.exit(0);
 -    // } else {
 -    //     std.process.exit(1);
 -    // }
 +    const pattern = args[2];
-+    if (matchPattern(input_slice, pattern)) {
++    if (matchPattern(input_slice.?, pattern)) {
 +        std.process.exit(0);
 +    } else {
 +        std.process.exit(1);

starter_templates/zig/code/src/main.zig

@@ -1,5 +1,8 @@
 const std = @import("std");
-var stdin = std.fs.File.stdin().readerStreaming(&.{});
+
+var stdin_buffer: [4096]u8 = undefined;
+var stdin_reader = std.fs.File.stdin().readerStreaming(&stdin_buffer);
+const stdin = &stdin_reader.interface;
 
 fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
     if (pattern.len == 1) {
@@ -27,12 +30,10 @@ pub fn main() !void {
 
     // TODO: Uncomment the code below to pass the first stage
     //
-    // var input_buffer: [1024]u8 = undefined;
-    // const input_len = try stdin.read(&input_buffer);
-    // const input_slice = input_buffer[0..input_len];
+    // const input_slice = try stdin.takeDelimiter('\n');
     //
     // const pattern = args[2];
-    // if (matchPattern(input_slice, pattern)) {
+    // if (matchPattern(input_slice.?, pattern)) {
     //     std.process.exit(0);
     // } else {
     //     std.process.exit(1);