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parse_extension/parse_extension_c

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This commit is contained in:
Kelvin Sherlock 2013-08-11 00:42:42 -04:00
parent 6c0594c255
commit b8cc6ee43a
2 changed files with 25 additions and 20 deletions
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43
ftype.c
View File

@ -3,18 +3,13 @@
#include <Types.h>
int parse_extension(const char *cp, Word *ftype, LongWord *atype)
// cp should be a filename w/ .ext
int parse_extension(const char *cp, Word size, Word *ftype, LongWord *atype);
int parse_extension_c(const char *cp, Word *ftype, LongWord *atype)
{
Word size;
Word *wp = (Word *)cp;
Word h;
int i;
int pd;
*ftype = 0;
*atype = 0;
if (!cp || !*cp) return 0;
pd = -1;
@ -34,23 +29,24 @@ int parse_extension(const char *cp, Word *ftype, LongWord *atype)
if (pd + 1 >= i) return 0;
pd++; // skip past it...
cp += pd;
size = i - pd;
return parse_extension(cp + pd, i - pd, ftype, atype);
}
// cp is just the extension
int parse_extension(const char *cp, Word size, Word *ftype, LongWord *atype)
{
Word *wp = (Word *)cp;
Word h;
if (!cp || !size) return 0;
h = ((*cp | 0x20) ^ size) & 0x0f;
switch (h)
{
case 0x00:
// text
if (size == 4
&& (wp[0] | 0x2020) == 0x6574 // 'te'
&& (wp[1] | 0x2020) == 0x7478 // 'xt'
) {
*ftype = 0x04;
*atype = 0x0000;
return 1;
}
// shk
if (size == 3
&& (wp[0] | 0x2020) == 0x6873 // 'sh'
@ -60,6 +56,15 @@ int parse_extension(const char *cp, Word *ftype, LongWord *atype)
*atype = 0x8002;
return 1;
}
// text
if (size == 4
&& (wp[0] | 0x2020) == 0x6574 // 'te'
&& (wp[1] | 0x2020) == 0x7478 // 'xt'
) {
*ftype = 0x04;
*atype = 0x0000;
return 1;
}
break;
case 0x01:

2
ftype.txt
View File

@ -5,6 +5,7 @@
#include <Types.h>
// cp should be a filename w/ .ext
int parse_extension(const char *cp, Word size, Word *ftype, LongWord *atype);
int parse_extension_c(const char *cp, Word *ftype, LongWord *atype)
{
int i;
@ -35,7 +36,6 @@ int parse_extension_c(const char *cp, Word *ftype, LongWord *atype)
// cp is just the extension
int parse_extension(const char *cp, Word size, Word *ftype, LongWord *atype)
{
Word size;
Word *wp = (Word *)cp;
Word h;