dep

commit 70453235b61e0189aececa36a211cce7817c5410
parent 923b3da7ddeb2e2781d721572a8c0c6d5c5b6d7d
Author: finwo <finwo@pm.me>
Date:   Fri, 13 Mar 2026 11:54:19 +0100

Add license command

Diffstat:
M
Makefile
 | 
12
++++++++++++
A
src/command/command.h
 | 
7
+++++++
A
src/command/license/license.h
 | 
7
+++++++
A
src/command/license/main.c
 | 
24
++++++++++++++++++++++++
A
src/command/license/main.h
 | 
0

M
src/main.c
 | 
23
++++++++---------------

6 files changed, 58 insertions(+), 15 deletions(-)
diff --git a/Makefile b/Makefile
@@ -1,6 +1,8 @@
 CC?=clang
 
 FIND=$(shell which gfind find | head -1)
+OBJCOPY=$(shell which objcopy)
+
 SRC:=
 INCLUDES:=
 CFLAGS:=
@@ -33,11 +35,16 @@ SRC+=lib/rxi/microtar/src/microtar.c
 
 OBJ:=$(SRC:.c=.o)
 OBJ:=$(OBJ:.cc=.o)
+OBJ+=license.o
+
 CFLAGS+=${INCLUDES}
 
 .PHONY: default
 default: dep
 
+license.o: LICENSE.md
+	$(OBJCOPY) --input binary --output elf64-x86-64 --binary-architecture i386 $< $@
+
 lib/cofyc/argparse:
 	mkdir -p lib/cofyc/argparse
 	curl -sL https://github.com/cofyc/argparse/archive/refs/heads/master.tar.gz | tar xzv --strip-components=1 -C lib/cofyc/argparse
@@ -61,3 +68,8 @@ lib/rxi/microtar:
 
 dep: $(LIBS) $(OBJ)
 	${CC} ${OBJ} ${CFLAGS} ${LDFLAGS} -o $@
+
+.PHONY: clean
+clean:
+	rm -f $(OBJ)
+
diff --git a/src/command/command.h b/src/command/command.h
@@ -0,0 +1,7 @@
+struct cmd_struct {
+    void *next;
+    const char *cmd;
+    int (*fn) (int, const char **);
+};
+
+extern struct cmd_struct *commands;
diff --git a/src/command/license/license.h b/src/command/license/license.h
@@ -0,0 +1,7 @@
+#ifndef LICENSE_H
+#define LICENSE_H
+
+extern const unsigned char _binary_LICENSE_md_start[];
+extern const unsigned char _binary_LICENSE_md_end[];
+
+#endif // LICENSE_H
diff --git a/src/command/license/main.c b/src/command/license/main.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "command/command.h"
+#include "license.h"
+
+int cmd_license(int argc, const char **argv) {
+    (void)argc;
+    (void)argv;
+    const unsigned char *start = _binary_LICENSE_md_start;
+    const unsigned char *end   = _binary_LICENSE_md_end;
+    size_t len = end - start;
+    fwrite(start, 1, len, stdout);
+    return 0;
+}
+
+void __attribute__((constructor)) cmd_license_setup() {
+  struct cmd_struct *cmd = calloc(1, sizeof(struct cmd_struct));
+  cmd->next = commands;
+  cmd->fn = cmd_license;
+  cmd->cmd = "license";
+  commands = cmd;
+}
+
diff --git a/src/command/license/main.h b/src/command/license/main.h
diff --git a/src/main.c b/src/main.c
@@ -6,18 +6,17 @@
 #include "erkkah/naett.h"
 #include "rxi/microtar.h"
 
+#include "command/command.h"
+
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 
+struct cmd_struct *commands = NULL;
+
 static const char *const usages[] = {
     "subcommands [options] [cmd] [args]",
     NULL,
 };
 
-struct cmd_struct {
-    const char *cmd;
-    int (*fn) (int, const char **);
-};
-
 int
 cmd_foo(int argc, const char **argv)
 {
@@ -57,11 +56,6 @@ cmd_bar(int argc, const char **argv)
     return 0;
 }
 
-static struct cmd_struct commands[] = {
-    {"foo", cmd_foo},
-    {"bar", cmd_bar},
-};
-
 int
 main(int argc, const char **argv)
 {
@@ -78,11 +72,10 @@ main(int argc, const char **argv)
     }
 
     /* Try to run command with args provided. */
-    struct cmd_struct *cmd = NULL;
-    for (int i = 0; i < ARRAY_SIZE(commands); i++) {
-        if (!strcmp(commands[i].cmd, argv[0])) {
-            cmd = &commands[i];
-        }
+    struct cmd_struct *cmd = commands;
+    while(cmd) {
+        if (!strcmp(cmd->cmd, argv[0])) break;
+        cmd = cmd->next;
     }
     if (cmd) {
         return cmd->fn(argc, argv);