Port: uhex (RO)

docs/USERS.md

@@ -147,3 +147,7 @@ Controls:
 #### `exec <binary>`
 
 Executes a binary file. Warning: this is highly broken and syscalls aren't working. It's written in a childish manner. Help is always appreciated (lol).
+
+#### `uhex <file>`
+
+Prints the hex and ASCII contents of a file.

src/kernel/shell.c

@@ -147,6 +147,7 @@ void shell_install()
   register_command("naval", program_navalbattle);
   register_command("snake", program_snake);
   register_command("exec", program_exec);
+  register_command("uhex", program_uhex);
 
   for (;;)
   {

src/utils/misc.c

@@ -76,7 +76,7 @@ void program_uptime()
 
 void program_help()
 {
-	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\t   reboot\npi\t  ls\t   cat\t  bmp\t   lspci\t  naval\nsnake   exec\n");
+	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\t   reboot\npi\t  ls\t   cat\t  bmp\t   lspci\t  naval\nsnake   exec\t uhex\n");
 }
 
 // Panic

src/utils/uhex.c

@@ -7,12 +7,19 @@
 // and now by being here it is even worse because it is RO and will have
 // hardcoded stuff in it (no ioctl, STDOUT, or other stuff here...)
 
-/*
-
 #define BYTES 1024
 #define round(x) (int)(x < 0 ? (x -0.5) : x + 0.5)
 
-// WIP: pushed but not done yet
+#include "../libc/stdio.h"
+#include "../kernel/kmain.h"
+#include "../kernel/initrd.h"
+#include "../libc/string.h"
+#include "../kernel/kheap.h"
+
+int isprint(int c)
+{
+	return (c >= 32 && c <= 126);
+}
 
 void print_hex(unsigned char* buf, int byteno, int pos, int BYTES_PER_LINE)
 {
@@ -34,7 +41,7 @@ void print_hex(unsigned char* buf, int byteno, int pos, int BYTES_PER_LINE)
 			if (pos == 0) printf("%06d:   ", i);
 			else printf("%06d:   ", pos);
 		}
-	printf("%2x", buf[i]);
+	printf("%2x ", buf[i]);
 	}
 
 	int padding = BYTES_PER_LINE - (byteno % BYTES_PER_LINE);
@@ -59,14 +66,17 @@ void program_uhex(int argc, char* argv[])
 {
 	if (argc < 2)
 	{
-		printf("Usage: uhex <file>\nInline commands:\n\tpX - print position X\n\teX - edit position X\n\tq - quit\n");
+		puts("Usage: uhex <file>\n");
 		return;
 	}
 
 	int BYTES_PER_LINE = 20;
-
 	
+	//unsigned char buf[BYTES]; // malloc with file_size next?
+	uint32_t file_size = tar_get_file_size((uint8_t*)initrd_addr, argv[1]);
+	unsigned char* buf = (unsigned char*)malloc(file_size);
+	tar_file_to_buffer((uint8_t*)initrd_addr, argv[1], (char*)buf);
+	print_hex(buf, file_size, 0, BYTES_PER_LINE);
 
+	free(buf);
 }
-
-*/ 

src/utils/utils.h

@@ -48,4 +48,6 @@ void program_snake();
 // Binaries loading and execution
 void program_exec();
 
+void program_uhex();
+
 #endif