reactos/tools/rline.c

   1 /*
   2  * Copy a text file with end-of-line character transformation (EOL)
   3  *
   4  * Usage: rline input-file output-file
   5  */
   6 #include <sys/stat.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <stdlib.h>
  10
  11 char* convert_path(char* origpath)
  12 {
  13    char* newpath;
  14    int i;
  15
  16    newpath = strdup(origpath);
  17
  18    i = 0;
  19    while (newpath[i] != 0)
  20      {
  21 #ifdef UNIX_PATHS
  22         if (newpath[i] == '\\')
  23           {
  24              newpath[i] = '/';
  25           }
  26 #else
  27 #ifdef DOS_PATHS
  28         if (newpath[i] == '/')
  29           {
  30              newpath[i] = '\\';
  31           }
  32 #endif
  33 #endif
  34         i++;
  35      }
  36    return(newpath);
  37 }
  38
  39 int
  40 fsize (FILE * f)
  41 {
  42   struct stat st;
  43   int fh = fileno (f);
  44
  45   if (fh < 0 || fstat (fh, &st) < 0)
  46     return -1;
  47   return (int) st.st_size;
  48 }
  49
  50 int main(int argc, char* argv[])
  51 {
  52   char* path1;
  53   char* path2;
  54   FILE* in;
  55   FILE* out;
  56   char* in_buf;
  57   int in_size;
  58   int in_ptr;
  59   int linelen;
  60   int n_in;
  61   int n_out;
  62   char eol_buf[2];
  63
  64   /* Terminate the line with windows EOL characters (CRLF) */
  65   eol_buf[0] = '\r';
  66   eol_buf[1] = '\n';
  67
  68    if (argc != 3)
  69      {
  70         fprintf(stderr, "Wrong argument count\n");
  71         exit(1);
  72      }
  73
  74    path1 = convert_path(argv[1]);
  75    path2 = convert_path(argv[2]);
  76
  77    in = fopen(path1, "rb");
  78    if (in == NULL)
  79      {
  80         perror("Cannot open input file");
  81         exit(1);
  82      }
  83
  84   in_size = fsize(in);
  85   in_buf = malloc(in_size);
  86   if (in_buf == NULL)
  87     {
  88           perror("Not enough free memory");
  89           fclose(in);
  90           exit(1);
  91     }
  92
  93    out = fopen(path2, "wb");
  94    if (out == NULL)
  95      {
  96         perror("Cannot open output file");
  97         fclose(in);
  98         exit(1);
  99      }
 100
 101   /* Read it all in */
 102   n_in = fread(in_buf, 1, in_size, in);
 103
 104   in_ptr = 0;
 105   while (in_ptr < in_size)
 106     {
 107       linelen = 0;
 108
 109       while ((in_ptr + linelen < in_size) && (in_buf[in_ptr + linelen] != '\r') && (in_buf[in_ptr + linelen] != '\n'))
 110         {
 111           linelen++;
 112         }
 113       if (linelen > 0)
 114         {
 115           n_out = fwrite(&in_buf[in_ptr], 1, linelen, out);
 116           in_ptr += linelen;
 117         }
 118       /* Terminate the line  */
 119       n_out = fwrite(&eol_buf[0], 1, sizeof(eol_buf), out);
 120
 121       if ((in_ptr < in_size) && (in_buf[in_ptr] == '\r'))
 122         {
 123           in_ptr++;
 124         }
 125
 126       if ((in_ptr < in_size) && (in_buf[in_ptr] == '\n'))
 127         {
 128           in_ptr++;
 129         }
 130     }
 131
 132   free(in_buf);
 133   fclose(in);
 134
 135   exit(0);
 136 }