Merge branch 'zig-translation' of luna/lunabot into master

.gitignore

@@ -53,3 +53,4 @@ Mkfile.old
 dkms.conf
 
 bin/
+zig-cache/

README.md

@@ -7,14 +7,10 @@ source is open, data is closed, this is for my own personal use
 ## depedencies
 
  - a robot girl to use those utils
- - posix compliant make
- - a c compiler
+ - the zig compiler https://ziglang.org
 
 ```
-make
-
-# or just remove PREFIX for /usr/local
-make PREFIX=$HOME/.local install
+zig build install --prefix ~/.local/
 ```
 
 ## using

build.zig

@@ -0,0 +1,31 @@
+const Builder = @import("std").build.Builder;
+
+pub fn build(b: *Builder) void {
+    const mode = b.standardReleaseOptions();
+    const exe = b.addExecutable("journal", null);
+    exe.setBuildMode(mode);
+    exe.linkSystemLibrary("c");
+
+    const source_files = [_][]const u8{"src/journal/main.c"};
+
+    for (source_files) |source| {
+        exe.addCSourceFile(source, [_][]const u8{"-Wall"});
+    }
+
+    const zig_sources = [_][]const u8{"src/journal/journal.zig"};
+
+    for (zig_sources) |source| {
+        const obj = b.addObject("journal", source);
+        obj.linkSystemLibrary("c");
+        exe.addObject(obj);
+    }
+
+    // enable us to run the main journal executable via
+    // the build system
+    const run_cmd = exe.run();
+    const run_step = b.step("run", "Run journal");
+    run_step.dependOn(&run_cmd.step);
+
+    b.default_step.dependOn(&exe.step);
+    b.installArtifact(exe);
+}

src/journal/journal.c

@@ -1,57 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <time.h>
-
-// functions to deal with the journal file
-
-
-FILE *journal_open(char *topic)
-{
-    char *home_path = getenv("HOME");
-
-    // combine w/ home path
-    char *journal_dir = (char*)malloc(1024);
-    snprintf(journal_dir, 1024, "%s/.lunabot", home_path);
-
-    // construct a 744
-    mkdir(journal_dir, S_IRWXU | S_IRGRP | S_IROTH);
-
-    char *journal_path = (char*)malloc(1024);
-    snprintf(journal_path, 1024, "%s/%s", journal_dir, topic);
-
-    FILE* res = fopen(journal_path, "a");
-
-    free(journal_path);
-    free(journal_dir);
-
-    return res;
-}
-
-void journal_write(FILE* journal_fd, char* message)
-{
-    // TODO: strlen()?
-    fwrite(message, strlen(message), 1, journal_fd);
-}
-
-void journal_close(FILE* journal_fd)
-{
-    fclose(journal_fd);
-}
-
-void journal_write_topic(FILE *journal_fd, char *topic, char *message)
-{
-    char *tstamp = malloc(128 * sizeof(char));
-    char fmt_msg[512];
-
-    time_t rawtime;
-    time(&rawtime);
-    const struct tm *cur_time = gmtime(&rawtime);
-    strftime(tstamp, 128, "%c", cur_time);
-
-    sprintf(fmt_msg, "[%s] [%s]: %s\n", tstamp, topic, message);
-    free(tstamp);
-
-    journal_write(journal_fd, fmt_msg);
-}

src/journal/journal.h

@@ -8,9 +8,9 @@
 
 #define STREQ(a, b) strcmp(a, b) == 0
 
-FILE *journal_open(char *topic);
-void journal_write(FILE*, char* message);
-void journal_write_topic(FILE*, char *topic, char *message);
-void journal_close(FILE*);
+int journal_open(char *topic);
+void journal_write(int, char* message);
+void journal_write_topic(int, char *topic, char *message);
+void journal_close(int);
 
 #endif

src/journal/journal.zig

@@ -0,0 +1,119 @@
+const std = @import("std");
+const os = std.os;
+
+const c = @cImport({
+    @cInclude("stdio.h");
+    @cInclude("stdlib.h");
+    @cInclude("sys/stat.h");
+    @cInclude("string.h");
+    @cInclude("time.h");
+});
+
+const warn = std.debug.warn;
+const allocator = std.heap.c_allocator;
+
+fn sliceify(ptr: [*]u8) []u8 {
+    return ptr[0..c.strlen(ptr)];
+}
+
+fn sliceifyKnown(slice: []u8) []u8 {
+    return slice[0..c.strlen(slice.ptr)];
+}
+
+export fn journal_open(topic_cptr: ?[*]u8) os.fd_t {
+    const topic = sliceify(topic_cptr.?);
+
+    const journal_dir = std.fs.path.resolve(allocator, [_][]const u8{
+        std.os.getenvC(c"HOME").?,
+        ".lunabot",
+    }) catch |err| {
+        warn("failed to resolve paths: {}\n", err);
+        return -1;
+    };
+
+    warn("journal_dir = {}\n", journal_dir);
+
+    std.fs.makeDir(journal_dir) catch |err| {
+        if (err != error.PathAlreadyExists) {
+            warn("failed to create journal dir {}: {}\n", journal_dir, err);
+            return -1;
+        }
+    };
+
+    const journal_path = std.fmt.allocPrint(allocator, "{}/{}", journal_dir, topic) catch |err| {
+        warn("failed to allocprint journal path: {}\n", err);
+        return -1;
+    };
+    defer allocator.free(journal_path);
+
+    warn("journal_path = {}\n", journal_path);
+
+    const fd = std.os.open(
+        journal_path,
+        std.os.O_WRONLY | std.os.O_CREAT | std.os.O_APPEND,
+        0o755,
+    ) catch |err| {
+        warn("failed to open {}: {}\n", journal_path, err);
+        return -1;
+    };
+
+    return fd;
+}
+
+export fn journal_write(journal: os.fd_t, message_cptr: ?[*]u8) void {
+    std.os.write(
+        journal,
+        sliceify(message_cptr.?),
+    ) catch |err| {
+        std.debug.warn("Error while writing to file: {}\n", err);
+        return;
+    };
+}
+
+export fn journal_close(journal: os.fd_t) void {
+    std.os.close(journal);
+}
+
+export fn journal_write_topic(
+    journal: os.fd_t,
+    topic_cptr: ?[*]u8,
+    message_cptr: ?[*]u8,
+) void {
+    var topic = sliceify(topic_cptr.?);
+    var message = sliceify(message_cptr.?);
+
+    var tstamp_total = allocator.alloc(u8, 128) catch |err| {
+        warn("failed to allocate string for timestamp\n");
+        return;
+    };
+    defer allocator.free(tstamp_total);
+
+    var rawtime: c.time_t = undefined;
+
+    _ = c.time(&rawtime);
+    var cur_time: [*c]const c.struct_tm = c.gmtime(&rawtime);
+    _ = c.strftime(tstamp_total.ptr, usize(128), c"%c", cur_time);
+
+    var tstamp = sliceifyKnown(tstamp_total);
+
+    std.debug.warn("tstamp: {}\ntopic: {}\nmsg: {}\n", tstamp, topic, message);
+
+    var fmt_msg = std.fmt.allocPrint(
+        allocator,
+        "[{}] [{}]: {}\n",
+        tstamp,
+        topic,
+        message,
+    ) catch |err| {
+        warn("Failed to make formatted message: {}\n", err);
+        return;
+    };
+
+    // catch unreachable is intended.
+    var fmt_msg_cstr = std.cstr.addNullByte(
+        allocator,
+        fmt_msg,
+    ) catch unreachable;
+
+    journal_write(journal, fmt_msg_cstr.ptr);
+}

src/journal/main.c

@@ -63,7 +63,7 @@ int main(int argc, char** argv)
 
     // default handling by journal_write_topic is marked
     // as the NULL values in this array.
-    void (*handlers[])(FILE*, char*) = {
+    void (*handlers[])(int, char*) = {
         NULL, NULL, NULL
     };
 
@@ -91,9 +91,13 @@ int main(int argc, char** argv)
 
         if(strcmp(topic, cur_topic) == 0)
         {
-            void (*fun_ptr)(FILE*, char*) = handlers[i];
+            void (*fun_ptr)(int, char*) = handlers[i];
 
-            FILE* journal_file = journal_open(topic);
+            int journal_file = journal_open(topic);
+            if(journal_file == -1) {
+                printf("failed to open journal file.\n");
+                return 1;
+            }
 
             char *handler_message = extract_handler_msg(argc, argv);
             printf("[%s] said '%s'\n", topic, handler_message);