APC main driver

[henge/webcc.git] / src / lexer.c

diff --git a/src/lexer.c b/src/lexer.c
deleted file mode 100644 (file)
index b230a4a..0000000
--- a/src/lexer.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*!@file
-  \brief   lexical analyzer implementation for APC
-  \details lexer for tokenizing filenames from a directory root
-  \author  Jordan Lavatai
-  \date    Aug 2016
-  ----------------------------------------------------------------------------*/
-//stdc
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-//posix
-#include <unistd.h>
-#include <dirent.h>
-//bison
-#include "fileparser.tab.h"
-
-int lexer_init(void);
-int lexer();
-
-#define BUF_SIZE 256
-#define STACK_BUF_SIZE (BUF_SIZE >> 2)
-static DIR*  dp_stack_buf[STACK_BUF_SIZE];
-static char  path_buf[BUF_SIZE];
-static char  storage_buf[BUF_SIZE];
-
-/* Setup stack and first directory to read from */
-int
-lexer_init()
-{ char cwd_buf[MAX_TOK_LEN];
-
-  dsp = dp_stack_base;
-  getcwd(path_buf, MAX_TOK_LEN);
-  printf("|------cwd is %s------|\n", path_buf);
-  if(!(*dsp = opendir(path_buf)))
-    printf("opendir(cwd) failed in linit()\n");
-
-  *dsp = dp;
-  printf("dp_stack is %x, dsp is %x size is %d\n",*dp_stack, *dsp, sizeof dp);
-
-  return 0;
-}
-
-/* Returns token identifier and sets yylval */
-int
-lexer()
-{ static DIR** dsp = &dp_stack_buf;
-  int tok_t;
-  char buf[MAX_TOK_LEN];
-  char* file_name;
-
-  printf("|------in yylex(), calling tok_dir------|\n");
-  if((tok_t = tok_dir(*dsp, yylval.str)) == -1)
-    printf("tok_dir returned -1, something is broken\n");
-  printf("|------in yylex(), returning tok_t = %d | err = %s------|\n", tok_t, strerror(errno));
-  return tok_t;
-}
-
-#define DSP_PUSH(_val) *++dsp = (_val)
-
-int
-tok_dir(DIR* dp, char buf[])
-{
-  struct dirent* de; /* directory entry */
-  static DIR *tmp_dp;
-  char *tmp_path;
-  int path_len;
-
-
-tok_start:
-  if((*dsp == NULL) || (de = readdir(*dsp)) == NULL)
-    {
-      if(errno)
-        {  printf("Error:%s in tok_dir\n", strerror(errno));
-          return errno;
-        }
-      if( (dsp - dp_stack) >= 0)
-        {
-          printf("Current directory is null, pop one off ");
-#define DSP_POP() *dsp--
-
-          dp = DSP_POP();
-
-          /* Remove directory that was popped from path */
-#define SUB_PATH() tmp_path = strrchr(path, '/'); \
-          path_len = strlen(tmp_path);            \
-          memset(tmp_path, 0, path_len)
-
-          SUB_PATH();
-
-          goto tok_start;
-        }
-      return 0; /* Done */
-    }
-
-  else if(de->d_type == DT_REG)
-    { printf("|------dir_ent is a file, "\
-             "setting yylval to %s------|\n", de->d_name);
-      memmove(buf, de->d_name, MAX_TOK_LEN);
-      return FDAT;
-    }
-  else if (de->d_type == DT_DIR )
-    { if ((dsp - dp_stack) >= MAX_DIR_DEP) /* We've opened to many directories */
-        {
-          printf("Too many directories!\n");
-          return 1;
-        }
-      if(strcmp(de->d_name,".") == 0 || strcmp(de->d_name,"..") == 0)
-        {
-          printf("directory is %s \n", de->d_name);
-          goto tok_start;
-        }
-
-      printf("|------ dir_ent is directory %s, "\
-             "cwd = %s, path = %s ------|\n", de->d_name, get_current_dir_name(), path);
-
-
-      /* Add directory name to path */
-#define ADD_PATH(_name) strcat(path, "/");      \
-                        strcat(path, _name)
-
-      ADD_PATH(de->d_name);
-
-      tmp_dp = opendir(path);
-      if(tmp_dp == 0)
-        { printf("opening the directory failed,"\
-                 "errno = %s\n", strerror(errno));
-          return -1;
-        }
-
-      DSP_PUSH(tmp_dp);
-
-      goto tok_start;
-
-    }
-  else
-    {
-      printf("A file that is not a diretory or a regular file is unable to be tokenized: %s\n", de->d_name);
-      return -1;
-    }
-
-
-
-}