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OS2PLST.SRC
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EDIT.C
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1989-07-16
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10KB
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418 lines
#include <dos.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <math.h>
#include <malloc.h>
#include <string.h>
#include "types.h"
#include "externs.h"
/*
*
* -rev 04-16-87 (abbreviated)
* The CRC-16 routines used by XMODEM, YMODEM, and ZMODEM
* are also in this file, a fast table driven macro version
*/
/* crctab calculated by Mark G. Mendel, Network Systems Corporation */
static unsigned short crctab[256] = {
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
};
/*
* updcrc macro derived from article Copyright (C) 1986 Stephen Satchell.
* NOTE: First srgument must be in range 0 to 255.
* Second argument is referenced twice.
*
* Programmers may incorporate any or all code into their programs,
* giving proper credit within the source. Publication of the
* source routines is permitted so long as proper credit is given
* to Stephen Satchell, Satchell Evaluations and Chuck Forsberg,
* Omen Technology.
*/
#define updcrc(cp, crc) ( crctab[((crc >> 8) & 255) ^ cp] ^ (crc << 8))
char old_name[13] = "NODELIST.*";
char new_name[13] = "NODELIST.";
char diff_name[13] = "NODEDIFF.*";
FILE *old_file, *diff_file, *new_file;
unsigned official_crc = 0;
unsigned calc_crc = 0; /* Until I find out how to do the CRC */
unsigned
crcstr (buf, crc)
char *buf;
unsigned crc;
{
char *p;
p = buf;
fix_up (p);
while (*p)
{
crc = updcrc (*p++, crc);
}
return (crc);
}
void
fix_up (buf)
char *buf;
{
char *p;
p = buf + strlen (buf) - 1;
if (*p == '\n')
--p;
if (*p == '\r')
--p;
while (*p == ' ')
--p;
strcpy (++p, "\r\n");
/* Now get rid of rotten chars */
p = buf;
while (*p)
{
if (*p >= 128)
*p = '?';
++p;
}
}
void
edit () /* Add NODEDIFF to NODELIST */
{
int results;
get_old_name (old_name);
if (!get_diff_name (diff_name))
{
results = open_infiles (old_name, diff_name);
}
else
{
results = 1;
}
if (results == 0)
add_files ();
close_files ();
return;
}
void
add_files () /* Actually put the new lines in here */
{
char old_line[256];
char diff_line[256];
char *pnt_line;
char first_char;
char *diff_result;
char *old_result;
char *ptr;
int i, j, k;
int first_diff;
first_diff = 1;
pnt_line = (char *) _nmalloc (256);
while ((diff_result = fgets (diff_line, 256, diff_file)) != NULL)
{
strcpy (pnt_line, diff_line);
first_char = diff_line[0];
switch (first_char)
{
case ';':
continue;
case 'D':
j = atoi (pnt_line + 1);
for (i = 0; i < j; i++)
{
old_result = fgets (old_line, 256, old_file);
}
break;
case 'A':
j = atoi (pnt_line + 1);
for (i = 0; i < j; i++)
{
diff_result = fgets (diff_line, 256, diff_file);
if (!first_diff)
calc_crc = crcstr (diff_line, calc_crc);
else
{
first_diff = 0;
ptr = strrchr (diff_line, ':');
if (ptr != NULL)
{
++ptr;
official_crc = atoi (ptr);
}
}
k = fputs (diff_line, new_file);
}
break;
case 'C':
j = atoi (pnt_line + 1);
for (i = 0; i < j; i++)
{
diff_result = fgets (old_line, 256, old_file);
calc_crc = crcstr (old_line, calc_crc);
k = fputs (old_line, new_file);
}
break;
default:
printf ("\n\tI don't understand this line.\n");
break;
}
}
if (calc_crc != official_crc)
{
fputs (";A This nodelist does not have the proper CRC!\r\n", new_file);
printf ("This nodelist does not have the proper CRC %u/%u!\n",
calc_crc, official_crc);
printf ("Please check out the problem and correct it.\n\n");
}
fprintf (new_file, "%c", '\032');
return;
}
void
close_files ()
{
fclose (old_file);
fclose (new_file);
fclose (diff_file);
return;
}
int
open_infiles (char *nodelist, char *difflist)
{
char first_line[256], *result;
char temp[11];
/* int a_number, i, j; */
int i, j;
struct find_t c_file;
#ifndef OS2
i = _dos_findfirst (new_name, _A_NORMAL, &c_file);
#else
i = dir_findfirst (new_name, _A_NORMAL, &c_file);
#endif
if (i == 0)
{
printf ("%s already exists.\n", new_name);
return (1);
}
if (!(old_file = fopen (nodelist, "rb")))
{
printf ("Error opening old nodelist file!\n");
return (1);
}
if (!(diff_file = fopen (difflist, "rb")))
{
printf ("Error opening nodediff file!\n");
return (1);
}
result = fgets (first_line, 256, diff_file);
for (i = 0; i < 80; i++)
if (first_line[i] == ':')
j = i;
for (i = 0; i < 10; i++)
temp[i] = first_line[i + j + 1];
official_crc = atoi (temp);
j -= 5;
for (i = 0; i < 5; i++)
temp[i] = first_line[i + j];
temp[5] = '\0';
j = atoi (temp);
result = strrchr (nodelist, '.');
result++;
i = atoi (result);
if (i != j)
{
printf ("NodeDiff doesn't match to existing Nodelist file! Skipping...\n");
return (1);
}
new_file = fopen (new_name, "wb");
if (new_file == NULL)
{
printf ("Can't open new nodelist file!\n");
return (1);
}
printf ("Applying '%s' to '%s'\n", difflist, nodelist);
return (0);
}
void
get_old_name (char *temp_name)
{
char *temp;
int i, j, k;
struct find_t c_file;
temp = (char *) _nmalloc (20);
#ifndef OS2
j = _dos_findfirst (temp_name, _A_NORMAL, &c_file);
#else
j = dir_findfirst (temp_name, _A_NORMAL, &c_file);
#endif
while (j == 0)
{
temp = strrchr (c_file.name, '.');
temp++;
if (isdigit (*temp) && isdigit (*(temp+1)) && isdigit (*(temp+2)))
{
i = atoi (temp);
strcpy (old_name, c_file.name);
break;
}
else
{
#ifndef OS2
j = _dos_findnext (&c_file);
#else
j = dir_findnext (&c_file);
#endif
}
}
while (j == 0)
{
#ifndef OS2
j = _dos_findnext (&c_file);
#else
j = dir_findnext (&c_file);
#endif
temp = strrchr (c_file.name, '.');
temp++;
if (isdigit (*temp) && isdigit (*(temp+1)) && isdigit (*(temp+2)))
{
k = atoi (temp);
if ((i < k && (k - i) < 300) ||
(k < i && (k - i) > 300))
{
i = k;
strcpy (old_name, c_file.name);
}
}
}
return;
}
int
get_diff_name (char *temp_name)
{
char *temp;
int i, j, k;
struct find_t c_file;
temp = (char *) _nmalloc (80);
#ifndef OS2
if (j = _dos_findfirst (temp_name, _A_NORMAL, &c_file))
#else
if (j = dir_findfirst (temp_name, _A_NORMAL, &c_file))
#endif
{
return (1);
}
while (j == 0)
{
temp = strrchr (c_file.name, '.');
temp++;
if (isdigit (*temp) && isdigit (*(temp+1)) && isdigit (*(temp+2)))
{
i = atoi (temp);
strcpy (diff_name, c_file.name);
break;
}
else
{
#ifndef OS2
j = _dos_findnext (&c_file);
#else
j = dir_findnext (&c_file);
#endif
}
}
if (j != 0)
return (1);
while (j == 0)
{
#ifndef OS2
j = _dos_findnext (&c_file);
#else
j = dir_findnext (&c_file);
#endif
temp = strrchr (c_file.name, '.');
temp++;
if (isdigit (*temp) && isdigit (*(temp+1)) && isdigit (*(temp+2)))
{
k = atoi (temp);
if ((i < k && (k - i) < 300) ||
(k < i && (k - i) > 300))
{
i = k;
strcpy (diff_name, c_file.name);
}
}
}
temp = strrchr (diff_name, '.');
temp++;
strcat (new_name, temp);
return (0);
}