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check if drag-n-dropped .lmp files could be demo lumps (#960)

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and pass them to the -playdemo parameter if appropriate.
This commit is contained in:
Fabian Greffrath 2023-03-27 15:19:16 +02:00 committed by GitHub
parent a922c4a0aa
commit b1c1256891
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 102 additions and 5 deletions
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107
src/d_main.c
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@ -1223,14 +1223,91 @@ enum
FILETYPE_IWAD = 0x2,
FILETYPE_PWAD = 0x4,
FILETYPE_DEH = 0x8,
FILETYPE_DEMO = 0x10,
};
static boolean FileIsDemoLump(const char *filename)
{
FILE *handle;
int count, ver;
byte buf[32], *p = buf;
handle = M_fopen(filename, "rb");
if (handle == NULL)
{
return false;
}
count = fread(buf, 1, sizeof(buf), handle);
fclose(handle);
if (count != sizeof(buf))
{
return false;
}
ver = *p++;
if (ver == 255) // skip UMAPINFO demo header
{
p += 26;
ver = *p++;
}
if (ver >= 0 && ver <= 4) // v1.0/v1.1/v1.2
{
p--;
}
else
{
switch (ver)
{
case 104: // v1.4
case 105: // v1.5
case 106: // v1.6/v1.666
case 107: // v1.7/v1.7a
case 108: // v1.8
case 109: // v1.9
case 111: // v1.91 hack
break;
case 200: // Boom
case 201:
case 202:
case 203: // MBF
p += 7; // skip signature and compatibility flag
break;
case 221: // MBF21
p += 6; // skip signature
break;
default:
return false;
break;
}
}
if (*p++ > 5) // skill
{
return false;
}
if (*p++ > 9) // episode
{
return false;
}
if (*p++ > 99) // map
{
return false;
}
return true;
}
static int GuessFileType(const char *name)
{
int ret = FILETYPE_UNKNOWN;
const char *base;
char *lower;
static boolean iwad_found = false;
static boolean iwad_found = false, demo_found = false;
base = M_BaseName(name);
lower = M_StringDuplicate(base);
@ -1244,11 +1321,24 @@ static int GuessFileType(const char *name)
iwad_found = true;
}
else if (M_StringEndsWith(lower, ".wad") ||
M_StringEndsWith(lower, ".lmp") ||
M_StringEndsWith(lower, ".zip"))
{
ret = FILETYPE_PWAD;
}
else if (M_StringEndsWith(lower, ".lmp"))
{
// only ever add one argument to the -playdemo parameter
if (demo_found == false && FileIsDemoLump(name))
{
ret = FILETYPE_DEMO;
demo_found = true;
}
else
{
ret = FILETYPE_PWAD;
}
}
else if (M_StringEndsWith(lower, ".deh") ||
M_StringEndsWith(lower, ".bex"))
{
@ -1287,10 +1377,11 @@ static void M_AddLooseFiles(void)
return;
}
// allocate space for up to three additional regular parameters
// allocate space for up to four additional regular parameters
// (-iwad, -merge, -deh, -playdemo)
arguments = malloc((myargc + 3) * sizeof(*arguments));
memset(arguments, 0, (myargc + 3) * sizeof(*arguments));
arguments = malloc((myargc + 4) * sizeof(*arguments));
memset(arguments, 0, (myargc + 4) * sizeof(*arguments));
// check the command line and make sure it does not already
// contain any regular parameters or response files
@ -1340,6 +1431,12 @@ static void M_AddLooseFiles(void)
arguments[myargc].type = FILETYPE_DEH - 1;
myargc++;
}
if (types & FILETYPE_DEMO)
{
arguments[myargc].str = M_StringDuplicate("-playdemo");
arguments[myargc].type = FILETYPE_DEMO - 1;
myargc++;
}
newargv = malloc(myargc * sizeof(*newargv));