ref: 21599058db1a007755c54a6faca2f8e0c74eda6d
dir: /src/m_argv.c/
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005-2014 Simon Howard
//
// 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.
//
// DESCRIPTION:
//
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL_stdinc.h"
#include "doomtype.h"
#include "d_iwad.h"
#include "i_system.h"
#include "m_misc.h"
#include "m_argv.h" // haleyjd 20110212: warning fix
int myargc;
char** myargv;
//
// M_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 M_CheckParmWithArgs(const char *check, int num_args)
{
int i;
for (i = 1; i < myargc - num_args; i++)
{
if (!strcasecmp(check, myargv[i]))
return i;
}
return 0;
}
//
// M_ParmExists
//
// Returns true if the given parameter exists in the program's command
// line arguments, false if not.
//
boolean M_ParmExists(const char *check)
{
return M_CheckParm(check) != 0;
}
int M_CheckParm(const char *check)
{
return M_CheckParmWithArgs(check, 0);
}
#define MAXARGVS 100
static void LoadResponseFile(int argv_index, const char *filename)
{
FILE *handle;
int size;
char *infile;
char *file;
char **newargv;
int newargc;
int i, k;
// Read the response file into memory
handle = M_fopen(filename, "rb");
if (handle == NULL)
{
printf ("\nNo such response file!");
exit(1);
}
printf("Found response file %s!\n", filename);
size = M_FileLength(handle);
// Read in the entire file
// Allocate one byte extra - this is in case there is an argument
// at the end of the response file, in which case a '\0' will be
// needed.
file = malloc(size + 1);
i = 0;
while (i < size)
{
k = fread(file + i, 1, size - i, handle);
if (k < 0)
{
I_Error("Failed to read full contents of '%s'", filename);
}
i += k;
}
fclose(handle);
// Create new arguments list array
newargv = malloc(sizeof(char *) * MAXARGVS);
newargc = 0;
memset(newargv, 0, sizeof(char *) * MAXARGVS);
// Copy all the arguments in the list up to the response file
for (i=0; i<argv_index; ++i)
{
newargv[i] = myargv[i];
myargv[i] = NULL;
++newargc;
}
infile = file;
k = 0;
while(k < size)
{
// Skip past space characters to the next argument
while(k < size && isspace(infile[k]))
{
++k;
}
if (k >= size)
{
break;
}
// If the next argument is enclosed in quote marks, treat
// the contents as a single argument. This allows long filenames
// to be specified.
if (infile[k] == '\"')
{
char *argstart;
// Skip the first character(")
++k;
argstart = &infile[k];
// Read all characters between quotes
while (k < size && infile[k] != '\"' && infile[k] != '\n')
{
++k;
}
if (k >= size || infile[k] == '\n')
{
I_Error("Quotes unclosed in response file '%s'",
filename);
}
// Cut off the string at the closing quote
infile[k] = '\0';
++k;
newargv[newargc++] = M_StringDuplicate(argstart);
}
else
{
char *argstart;
// Read in the next argument until a space is reached
argstart = &infile[k];
while(k < size && !isspace(infile[k]))
{
++k;
}
// Cut off the end of the argument at the first space
infile[k] = '\0';
++k;
newargv[newargc++] = M_StringDuplicate(argstart);
}
}
// Add arguments following the response file argument
for (i=argv_index + 1; i<myargc; ++i)
{
newargv[newargc] = myargv[i];
myargv[i] = NULL;
++newargc;
}
// Free any old strings in myargv which were not moved to newargv
for (i = 0; i < myargc; ++i)
{
if (myargv[i] != NULL)
{
free(myargv[i]);
myargv[i] = NULL;
}
}
free(myargv);
myargv = newargv;
myargc = newargc;
free(file);
#if 0
// Disabled - Vanilla Doom does not do this.
// Display arguments
printf("%d command-line args:\n", myargc);
for (k=1; k<myargc; k++)
{
printf("'%s'\n", myargv[k]);
}
#endif
}
//
// Find a Response File
//
void M_FindResponseFile(void)
{
int i;
for (i = 1; i < myargc; i++)
{
if (myargv[i][0] == '@')
{
LoadResponseFile(i, myargv[i] + 1);
}
}
for (;;)
{
//!
// @arg <filename>
//
// Load extra command line arguments from the given response file.
// Arguments read from the file will be inserted into the command
// line replacing this argument. A response file can also be loaded
// using the abbreviated syntax '@filename.rsp'.
//
i = M_CheckParmWithArgs("-response", 1);
if (i <= 0)
{
break;
}
// Replace the -response argument so that the next time through
// the loop we'll ignore it. Since some parameters stop reading when
// an argument beginning with a '-' is encountered, we keep something
// that starts with a '-'.
free(myargv[i]);
myargv[i] = M_StringDuplicate("-_");
LoadResponseFile(i + 1, myargv[i + 1]);
}
}
#if defined(_WIN32)
enum
{
FILETYPE_UNKNOWN = 0x0,
FILETYPE_IWAD = 0x2,
FILETYPE_PWAD = 0x4,
FILETYPE_DEH = 0x8,
};
static int GuessFileType(const char *name)
{
int ret = FILETYPE_UNKNOWN;
const char *base;
char *lower;
static boolean iwad_found = false;
base = M_BaseName(name);
lower = M_StringDuplicate(base);
M_ForceLowercase(lower);
// only ever add one argument to the -iwad parameter
if (iwad_found == false && D_IsIWADName(lower))
{
ret = FILETYPE_IWAD;
iwad_found = true;
}
else if (M_StringEndsWith(lower, ".wad") ||
M_StringEndsWith(lower, ".lmp"))
{
ret = FILETYPE_PWAD;
}
else if (M_StringEndsWith(lower, ".deh") ||
// M_StringEndsWith(lower, ".bex") ||
M_StringEndsWith(lower, ".hhe") ||
M_StringEndsWith(lower, ".seh"))
{
ret = FILETYPE_DEH;
}
free(lower);
return ret;
}
typedef struct
{
char *str;
int type, stable;
} argument_t;
static int CompareByFileType(const void *a, const void *b)
{
const argument_t *arg_a = (const argument_t *) a;
const argument_t *arg_b = (const argument_t *) b;
const int ret = arg_a->type - arg_b->type;
return ret ? ret : (arg_a->stable - arg_b->stable);
}
void M_AddLooseFiles(void)
{
int i, types = 0;
char **newargv;
argument_t *arguments;
if (myargc < 2)
{
return;
}
// allocate space for up to three additional regular parameters
arguments = malloc((myargc + 3) * sizeof(*arguments));
memset(arguments, 0, (myargc + 3) * sizeof(*arguments));
// check the command line and make sure it does not already
// contain any regular parameters or response files
// but only fully-qualified LFS or UNC file paths
for (i = 1; i < myargc; i++)
{
char *arg = myargv[i];
int type;
if (strlen(arg) < 3 ||
arg[0] == '-' ||
arg[0] == '@' ||
((!isalpha(arg[0]) || arg[1] != ':' || arg[2] != '\\') &&
(arg[0] != '\\' || arg[1] != '\\')))
{
free(arguments);
return;
}
type = GuessFileType(arg);
arguments[i].str = arg;
arguments[i].type = type;
arguments[i].stable = i;
types |= type;
}
// add space for one additional regular parameter
// for each discovered file type in the new argument list
// and sort parameters right before their corresponding file paths
if (types & FILETYPE_IWAD)
{
arguments[myargc].str = M_StringDuplicate("-iwad");
arguments[myargc].type = FILETYPE_IWAD - 1;
myargc++;
}
if (types & FILETYPE_PWAD)
{
arguments[myargc].str = M_StringDuplicate("-merge");
arguments[myargc].type = FILETYPE_PWAD - 1;
myargc++;
}
if (types & FILETYPE_DEH)
{
arguments[myargc].str = M_StringDuplicate("-deh");
arguments[myargc].type = FILETYPE_DEH - 1;
myargc++;
}
newargv = malloc(myargc * sizeof(*newargv));
// sort the argument list by file type, except for the zeroth argument
// which is the executable invocation itself
SDL_qsort(arguments + 1, myargc - 1, sizeof(*arguments), CompareByFileType);
newargv[0] = myargv[0];
for (i = 1; i < myargc; i++)
{
newargv[i] = arguments[i].str;
}
free(arguments);
myargv = newargv;
}
#endif
// Return the name of the executable used to start the program:
const char *M_GetExecutableName(void)
{
return M_BaseName(myargv[0]);
}
char *exedir = NULL;
void M_SetExeDir(void)
{
char *dirname;
dirname = M_DirName(myargv[0]);
exedir = M_StringJoin(dirname, DIR_SEPARATOR_S, NULL);
free(dirname);
}