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quakeforge/tools/Forge/cmdlib.c
2001-02-27 20:44:53 +00:00

891 lines
14 KiB
C

/*
cmdlib.c
Command library
Copyright (C) 1996-1997 id Software, Inc.
Copyright (C) 2001 Jeff Teunissen <deek@dusknet.dhs.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#include <sys/types.h>
#include <sys/stat.h>
#ifdef __unix__
# ifdef NeXT
# include <libc.h>
# endif
# include <unistd.h>
#endif
#ifdef WIN32
#include <direct.h>
#endif
#include "cmdlib.h"
#define PATHSEPERATOR '/'
// set these before calling CheckParm
int myargc;
char **myargv;
char com_token[1024];
qboolean com_eof;
qboolean archive;
char archivedir[1024];
/*
Error
For abnormal program terminations
*/
void
Error (char *error, ...)
{
va_list argptr;
printf ("************ ERROR ************\n");
va_start (argptr, error);
vprintf (error, argptr);
va_end (argptr);
printf ("\n");
exit (1);
}
/*
qdir will hold the path up to the quake directory, including the slash
f:\quake\
/raid/quake/
gamedir will hold qdir + the game directory (id1, id2, etc)
*/
char qdir[1024];
char gamedir[1024];
void
SetQdirFromPath (char *path)
{
char temp[1024];
char *c;
if (!(path[0] == '/' || path[0] == '\\' || path[1] == ':')) { // partial path
Q_getwd (temp);
strcat (temp, path);
path = temp;
}
// search for "quake" in path
for (c = path; *c; c++) {
if (!Q_strncasecmp (c, "quake", 5)) {
strncpy (qdir, path, c + 6 - path);
printf ("qdir: %s\n", qdir);
c += 6;
while (*c) {
if (*c == '/' || *c == '\\') {
strncpy (gamedir, path, c + 1 - path);
printf ("gamedir: %s\n", gamedir);
return;
}
c++;
}
Error ("No gamedir in %s", path);
return;
}
}
Error ("SeetQdirFromPath: no 'quake' in %s", path);
}
char *
ExpandPath (char *path)
{
static char full[1024];
if (!qdir)
Error ("ExpandPath called without qdir set");
if (path[0] == '/' || path[0] == '\\' || path[1] == ':')
return path;
sprintf (full, "%s%s", qdir, path);
return full;
}
char *
ExpandPathAndArchive (char *path)
{
char *expanded;
char archivename[1024];
expanded = ExpandPath (path);
if (archive) {
sprintf (archivename, "%s/%s", archivedir, path);
CopyFile (expanded, archivename);
}
return expanded;
}
char *
copystring (char *s)
{
char *b;
b = malloc (strlen (s) + 1);
strcpy (b, s);
return b;
}
/*
I_FloatTime
*/
double
I_FloatTime (void)
{
time_t t;
time (&t);
return t;
#if 0
// more precise, less portable
struct timeval tp;
struct timezone tzp;
static int secbase;
gettimeofday (&tp, &tzp);
if (!secbase) {
secbase = tp.tv_sec;
return tp.tv_usec / 1000000.0;
}
return (tp.tv_sec - secbase) + tp.tv_usec / 1000000.0;
#endif
}
void
Q_getwd (char *out)
{
#ifdef WIN32
_getcwd (out, 256);
strcat (out, "\\");
#else
getcwd (out, 256);
#endif
}
void
Q_mkdir (char *path)
{
#ifdef WIN32
if (_mkdir (path) != -1)
return;
#else
if (mkdir (path, 0777) != -1)
return;
#endif
if (errno != EEXIST)
Error ("mkdir %s: %s", path, strerror (errno));
}
/*
FileTime
returns -1 if not present
*/
int
FileTime (char *path)
{
struct stat buf;
if (stat (path, &buf) == -1)
return -1;
return buf.st_mtime;
}
/*
COM_Parse
Parse a token out of a string
*/
char *
COM_Parse (char *data)
{
int c;
int len = 0;
com_token[0] = 0;
if (!data)
return NULL;
// skip whitespace
skipwhite:
while ((c = *data) <= ' ') {
if (c == 0) {
com_eof = true;
return NULL; // end of file;
}
data++;
}
// skip // comments
if (c == '/' && data[1] == '/') {
while (*data && *data != '\n')
data++;
goto skipwhite;
}
// handle quoted strings specially
if (c == '\"') {
data++;
do {
c = *data++;
if (c == '\"') {
com_token[len] = 0;
return data;
}
com_token[len] = c;
len++;
} while (1);
}
// parse single characters
if (c == '{' || c == '}' || c == ')' || c == '(' || c == '\'' || c == ':') {
com_token[len] = c;
len++;
com_token[len] = 0;
return data + 1;
}
// parse a regular word
do {
com_token[len] = c;
data++;
len++;
c = *data;
if (c == '{' || c == '}' || c == ')' || c == '(' || c == '\''
|| c == ':')
break;
} while (c > 32);
com_token[len] = 0;
return data;
}
int
Q_strncasecmp (char *s1, char *s2, int n)
{
int c1, c2;
while (1) {
c1 = *s1++;
c2 = *s2++;
if (!n--)
return 0; // strings are equal until end point
if (c1 != c2) {
if (c1 >= 'a' && c1 <= 'z')
c1 -= ('a' - 'A');
if (c2 >= 'a' && c2 <= 'z')
c2 -= ('a' - 'A');
if (c1 != c2)
return -1; // strings not equal
}
if (!c1)
return 0; // strings are equal
}
return -1;
}
int
Q_strcasecmp (char *s1, char *s2)
{
return Q_strncasecmp (s1, s2, 99999);
}
char *
strupr (char *start)
{
char *in;
in = start;
while (*in) {
*in = toupper (*in);
in++;
}
return start;
}
char *
strlower (char *start)
{
char *in;
in = start;
while (*in) {
*in = tolower (*in);
in++;
}
return start;
}
/*
=============================================================================
MISC FUNCTIONS
=============================================================================
*/
/*
CheckParm
Checks for the given parameter in the program's command line arguments
Returns the argument number (1 to argc-1) or 0 if not present
*/
int
CheckParm (char *check)
{
int i;
for (i = 1; i < myargc; i++) {
if (!Q_strcasecmp (check, myargv[i]))
return i;
}
return 0;
}
/*
filelength
*/
int
filelength (FILE *f)
{
int pos;
int end;
pos = ftell (f);
fseek (f, 0, SEEK_END);
end = ftell (f);
fseek (f, pos, SEEK_SET);
return end;
}
FILE *
SafeOpenWrite (char *filename)
{
FILE *f;
f = fopen (filename, "wb");
if (!f)
Error ("Error opening %s: %s", filename, strerror (errno));
return f;
}
FILE *
SafeOpenRead (char *filename)
{
FILE *f;
f = fopen (filename, "rb");
if (!f)
Error ("Error opening %s: %s", filename, strerror (errno));
return f;
}
void
SafeRead (FILE *f, void *buffer, int count)
{
if (fread (buffer, 1, count, f) != (size_t) count)
Error ("File read failure");
}
void
SafeWrite (FILE *f, void *buffer, int count)
{
if (fwrite (buffer, 1, count, f) != (size_t) count)
Error ("File read failure");
}
/*
LoadFile
*/
int
LoadFile (char *filename, void **bufferptr)
{
FILE *f;
int length;
void *buffer;
f = SafeOpenRead (filename);
length = filelength (f);
buffer = malloc (length + 1);
((char *) buffer)[length] = 0;
SafeRead (f, buffer, length);
fclose (f);
*bufferptr = buffer;
return length;
}
/*
SaveFile
*/
void
SaveFile (char *filename, void *buffer, int count)
{
FILE *f;
f = SafeOpenWrite (filename);
SafeWrite (f, buffer, count);
fclose (f);
}
/*
DefaultExtension
Append an extension if the path doesn't have one.
The extension passed should include . at the beginning.
*/
void
DefaultExtension (char *path, char *extension)
{
char *src;
src = path + strlen (path) - 1;
while (*src != PATHSEPERATOR && src != path) {
if (*src == '.')
return; // it has an extension
src--;
}
strcat (path, extension);
}
void
DefaultPath (char *path, char *basepath)
{
char temp[128];
if (path[0] == PATHSEPERATOR)
return; // absolute path location
strcpy (temp, path);
strcpy (path, basepath);
strcat (path, temp);
}
void
StripFilename (char *path)
{
int length;
length = strlen (path) - 1;
while (length > 0 && path[length] != PATHSEPERATOR)
length--;
path[length] = 0;
}
void
StripExtension (char *path)
{
int length;
length = strlen (path) - 1;
while (length > 0 && path[length] != '.') {
length--;
if (path[length] == PATHSEPERATOR) // no extension
return;
}
if (length)
path[length] = 0;
}
/*
====================
Extract file parts
====================
*/
void
ExtractFilePath (char *path, char *dest)
{
char *src;
src = path + strlen (path) - 1;
// back up until a / or the start
while (src != path && *(src - 1) != PATHSEPERATOR)
src--;
memcpy (dest, path, src - path);
dest[src - path] = 0;
}
void
ExtractFileBase (char *path, char *dest)
{
char *src;
src = path + strlen (path) - 1;
// back up until a / or the start
while (src != path && *(src - 1) != PATHSEPERATOR)
src--;
while (*src && *src != '.') {
*dest++ = *src++;
}
*dest = 0;
}
void
ExtractFileExtension (char *path, char *dest)
{
char *src;
src = path + strlen (path) - 1;
// back up until a . or the start
while (src != path && *(src - 1) != '.')
src--;
if (src == path) {
*dest = 0; // no extension
return;
}
strcpy (dest, src);
}
/*
ParseNum / ParseHex
*/
int
ParseHex (char *hex)
{
char *str;
int num;
num = 0;
str = hex;
while (*str) {
num <<= 4;
if (*str >= '0' && *str <= '9')
num += *str - '0';
else if (*str >= 'a' && *str <= 'f')
num += 10 + *str - 'a';
else if (*str >= 'A' && *str <= 'F')
num += 10 + *str - 'A';
else
Error ("Bad hex number: %s", hex);
str++;
}
return num;
}
int
ParseNum (char *str)
{
if (str[0] == '$')
return ParseHex (str + 1);
if (str[0] == '0' && str[1] == 'x')
return ParseHex (str + 2);
return atol (str);
}
/*
============================================================================
BYTE ORDER FUNCTIONS
============================================================================
*/
#ifdef WORDS_BIGENDIAN
short
LittleShort (short l)
{
byte b1, b2;
b1 = l & 255;
b2 = (l >> 8) & 255;
return (b1 << 8) + b2;
}
short
BigShort (short l)
{
return l;
}
int
LittleLong (int l)
{
byte b1, b2, b3, b4;
b1 = l & 255;
b2 = (l >> 8) & 255;
b3 = (l >> 16) & 255;
b4 = (l >> 24) & 255;
return ((int) b1 << 24) + ((int) b2 << 16) + ((int) b3 << 8) + b4;
}
int
BigLong (int l)
{
return l;
}
float
LittleFloat (float l)
{
union {
byte b[4];
float f;
} in, out;
in.f = l;
out.b[0] = in.b[3];
out.b[1] = in.b[2];
out.b[2] = in.b[1];
out.b[3] = in.b[0];
return out.f;
}
float
BigFloat (float l)
{
return l;
}
#else
short
BigShort (short l)
{
byte b1, b2;
b1 = l & 255;
b2 = (l >> 8) & 255;
return (b1 << 8) + b2;
}
short
LittleShort (short l)
{
return l;
}
int
BigLong (int l)
{
byte b1, b2, b3, b4;
b1 = l & 255;
b2 = (l >> 8) & 255;
b3 = (l >> 16) & 255;
b4 = (l >> 24) & 255;
return ((int) b1 << 24) + ((int) b2 << 16) + ((int) b3 << 8) + b4;
}
int
LittleLong (int l)
{
return l;
}
float
BigFloat (float l)
{
union {
byte b[4];
float f;
} in, out;
in.f = l;
out.b[0] = in.b[3];
out.b[1] = in.b[2];
out.b[2] = in.b[1];
out.b[3] = in.b[0];
return out.f;
}
float
LittleFloat (float l)
{
return l;
}
#endif
//=======================================================
// FIXME: byte swap?
// this is a 16 bit, non-reflected CRC using the polynomial 0x1021
// and the initial and final xor values shown below... in other words, the
// CCITT standard CRC used by XMODEM
#define CRC_INIT_VALUE 0xffff
#define CRC_XOR_VALUE 0x0000
static unsigned short crctable[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
};
void
CRC_Init (unsigned short *crcvalue)
{
*crcvalue = CRC_INIT_VALUE;
}
void
CRC_ProcessByte (unsigned short *crcvalue, byte data)
{
*crcvalue = (*crcvalue << 8) ^ crctable[(*crcvalue >> 8) ^ data];
}
unsigned short
CRC_Value (unsigned short crcvalue)
{
return crcvalue ^ CRC_XOR_VALUE;
}
//=============================================================================
/*
CreatePath
Create a path.
*/
void
CreatePath (char *path)
{
char *ofs, c;
for (ofs = path + 1; *ofs; ofs++) {
c = *ofs;
if (c == '/' || c == '\\') { // create the directory
*ofs = 0;
Q_mkdir (path);
*ofs = c;
}
}
}
/*
CopyFile
Used to archive source files
*/
void
CopyFile (char *from, char *to)
{
void *buffer;
int length;
length = LoadFile (from, &buffer);
CreatePath (to);
SaveFile (to, buffer, length);
free (buffer);
}