Added basic assembly compilation

.gitignore

@@ -3,3 +3,4 @@ build/
 vgcore*
 test.*
 a.out
+out.bin

src/command.c

@@ -25,4 +25,13 @@ command_t *command_new(cmd_code_t type, int args[])
     cmd->arg_v[i] = args[i];
 
   return cmd;
+}
+
+cmd_desc_t *get_desc(char name[])
+{
+  for (int i = 0; i < sizeof(cmd_desc) / sizeof(cmd_desc_t); i++)
+    if (str_eq(name, cmd_desc[i].name))
+      return &cmd_desc[i];
+
+  return NULL;
 }

src/command.h

@@ -3,6 +3,8 @@
 
 #include <stdlib.h>
 
+#include "./utils.h"
+
 enum command_e
 {
   PUSH,
@@ -37,5 +39,6 @@ typedef struct
 } command_t;
 
 command_t *command_new(cmd_code_t type, int args[]);
+cmd_desc_t *get_desc(char name[]);
 
 #endif

src/compile.c

@@ -1,5 +1,69 @@
 #include "./compile.h"
 
-int compile(char input[], char output[])
+int compile(char input_src[], char output_src[])
 {
+  FILE *input = fopen(input_src, "r");
+  FILE *output = fopen(output_src, "wb");
+  if (input == NULL)
+  {
+    fprintf(stderr, "Unable to open input file\n");
+    return 1;
+  }
+  if (output == NULL)
+  {
+    fprintf(stderr, "Unable to open output file\n");
+    return -1;
+  }
+
+  int size = -1;
+  fwrite(&size, sizeof(int), 1, output);
+  size++;
+
+  char buffer[512];
+  int len = 0;
+
+  while ((len = read_line(input, buffer)), len >= 0)
+  {
+    if (len == 0)
+      continue;
+
+    char *pch = strtok(buffer, " ");
+
+    cmd_desc_t *description = get_desc(pch);
+    if (description == NULL)
+    {
+      fprintf(stderr, "No such command %s\n", pch);
+      return 1;
+    }
+
+    fwrite(&description->command, sizeof(int), 1, output);
+
+    for (int i = 0; i < description->argc; i++)
+    {
+      pch = strtok(NULL, " ");
+      if (pch == NULL)
+      {
+        fprintf(stderr, "Not enough arguments for %s\n", description->name);
+        return 1;
+      }
+
+      int arg = atoi(pch);
+
+      if (arg == 0 && pch[0] != '0')
+      {
+        fprintf(stderr, "Unsupported argument for %s\n", description->name);
+        return 1;
+      }
+
+      fwrite(&arg, sizeof(int), 1, output);
+    }
+
+    size++;
+  }
+
+  fseek(output, 0, SEEK_SET);
+  fwrite(&size, sizeof(int), 1, output);
+
+  fclose(input);
+  fclose(output);
 }

src/compile.h

@@ -1,5 +1,11 @@
 #ifndef COMPILE_H
 
+#include <stdio.h>
+#include <string.h>
+
+#include "./utils.h"
+#include "./command.h"
+
 int compile(char input[], char output[]);
 
 #endif

src/main.c

@@ -2,24 +2,20 @@
 #include "./stack.h"
 #include "./compile.h"
 #include "./read_bin.h"
-
-#ifdef IO_OPERATIONS
 #include <stdio.h>
 
 void print_help()
 {
   printf("*HELP*\n");
 }
-#endif
 
 int main(int argc, char *argv[])
 {
   if (argc < 2)
   {
-#ifdef IO_OPERATIONS
     fprintf(stderr, "Illegal input: command must be specified\n");
     print_help();
-#endif
+
     return 2;
   }
   if (strcmp(argv[1], "build") == 0)
@@ -30,10 +26,9 @@ int main(int argc, char *argv[])
       compile(argv[2], argv[3]);
     else
     {
-#ifdef IO_OPERATIONS
       fprintf(stderr, "Illegal input for build:\n");
       print_help();
-#endif
+
       return 2;
     }
   }
@@ -49,19 +44,17 @@ int main(int argc, char *argv[])
       stack = stack_new(1024, res);
     else
     {
-#ifdef IO_OPERATIONS
       fprintf(stderr, "Illegal input for run:\n");
       print_help();
-#endif
+
       return 2;
     }
 
     if (res != NULL && *res == -1)
     {
-#ifdef IO_OPERATIONS
       fprintf(stderr, "Stack creation error: check memory usage.\n");
       print_help();
-#endif
+
       return 1;
     }
 
@@ -76,10 +69,9 @@ int main(int argc, char *argv[])
   }
   else
   {
-#ifdef IO_OPERATIONS
     fprintf(stderr, "Illegal input: no such command\n");
     print_help();
-#endif
+
     return 2;
   }
 }

src/utils.c

@@ -7,5 +7,41 @@ int str_len(char str[])
   while (str[pos] != '\0')
     pos++;
 
+  return pos;
+}
+
+int str_eq(char a[], char b[])
+{
+  int i = 0;
+  while (a[i] != '\0' && b[i] != '\0')
+  {
+    if (a[i] != b[i])
+      return 0;
+
+    i++;
+  }
+
+  if (a[i] == '\0' && b[i] == '\0')
+    return 1;
+  else
+    return 0;
+}
+
+int read_line(FILE *file, char *buff)
+{
+  int pos = -1;
+  char ch;
+
+  while ((ch = getc(file)), ch != EOF && ch != '\n')
+  {
+    if (pos == -1)
+      pos = 0;
+
+    buff[pos] = ch;
+    pos++;
+  }
+
+  buff[pos] = '\0';
+
   return pos;
 }

src/utils.h

@@ -1,7 +1,10 @@
 #ifndef UTILS_H
 
 #include <stdlib.h>
+#include <stdio.h>
 
 int str_len(char str[]);
+int str_eq(char a[], char b[]);
+int read_line(FILE *file, char *buff);
 
 #endif