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Now handles Finder aliases as if they were symlinks.

This commit is contained in:
Ryan C. Gordon 2002-04-06 02:00:00 +00:00
parent ada7128625
commit c0b501934a
1 changed files with 142 additions and 4 deletions
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146
platform/macclassic.c
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@ -8,13 +8,35 @@
#include <stdlib.h>
#include <string.h>
#include <alloca.h>
/*
* Most of the API calls in here are, according to ADC, available since
* MacOS 8.1. I don't think I used any MacOS 9 or CarbonLib-specific
* functions. There might be one or two 8.5 calls, and perhaps when the
* ADC docs say "Available in MacOS 8.1" they really mean "this works
* with System 6, but we don't want to hear about it at this point."
*
* IsAliasFile() showed up in MacOS 8.5. You can duplicate this code with
* PBGetCatInfoSync(), which is an older API, if you hope the bits in the
* catalog info never change (which they won't for, say, MacOS 8.1).
* See Apple Technote FL-30:
* http://developer.apple.com/technotes/fl/fl_30.html
*
* If you want to use weak pointers and Gestalt, and choose the correct
* code to use during __PHYSFS_platformInit(), I'll accept a patch, but
* chances are, it wasn't worth the time it took to write this, let alone
* implement that.
*/
/*
* Please note that I haven't tried this code with CarbonLib or under
* MacOS X at all. The code in unix.c is known to work with Darwin,
* and you may or may not be better off using that.
* and you may or may not be better off using that, especially since
* mutexes are no-ops in this file. Patches welcome.
*/
#ifdef __PHYSFS_CARBONIZED__
#ifdef __PHYSFS_CARBONIZED__ /* this is currently not defined anywhere. */
#include <Carbon.h>
#else
#include <OSUtils.h>
@ -25,6 +47,7 @@
#include <MacMemory.h>
#include <Events.h>
#include <DriverGestalt.h>
#include <Aliases.h>
#endif
#define __PHYSICSFS_INTERNAL__
@ -218,7 +241,7 @@ int __PHYSFS_platformStricmp(const char *x, const char *y)
} /* __PHYSFS_platformStricmp */
static OSErr fnameToFSSpec(const char *fname, FSSpec *spec)
static OSErr fnameToFSSpecNoAlias(const char *fname, FSSpec *spec)
{
OSErr err;
Str255 str255;
@ -238,6 +261,77 @@ static OSErr fnameToFSSpec(const char *fname, FSSpec *spec)
err = FSMakeFSSpec(0, 0, str255, spec);
return(err);
} /* fnameToFSSpecNoAlias */
/* !!! FIXME: This code is pretty heinous. */
static OSErr fnameToFSSpec(const char *fname, FSSpec *spec)
{
Boolean alias = 0;
Boolean folder = 0;
OSErr err = fnameToFSSpecNoAlias(fname, spec);
if (err == dirNFErr) /* might be an alias in the middle of the path. */
{
/*
* Has to be at least two ':' chars, or we wouldn't get a
* dir-not-found condition. (no ':' means it was just a volume,
* just one ':' means we would have gotten a fnfErr, if anything.
*/
char *ptr;
char *start;
char *path = alloca(strlen(fname) + 1);
strcpy(path, fname);
ptr = strchr(path, ':');
BAIL_IF_MACRO(!ptr, ERR_FILE_NOT_FOUND, err); /* just in case */
ptr = strchr(ptr + 1, ':');
BAIL_IF_MACRO(!ptr, ERR_FILE_NOT_FOUND, err); /* just in case */
*ptr = '\0';
err = fnameToFSSpecNoAlias(path, spec); /* get first dir. */
BAIL_IF_MACRO(err != noErr, ERR_OS_ERROR, err);
start = ptr;
ptr = strchr(start + 1, ':');
do
{
CInfoPBRec infoPB;
memset(&infoPB, '\0', sizeof (CInfoPBRec));
infoPB.dirInfo.ioNamePtr = spec->name;
infoPB.dirInfo.ioVRefNum = spec->vRefNum;
infoPB.dirInfo.ioDrDirID = spec->parID;
infoPB.dirInfo.ioFDirIndex = 0;
err = PBGetCatInfoSync(&infoPB);
if (err != noErr) /* not an alias, really a bogus path. */
return(fnameToFSSpecNoAlias(fname, spec)); /* reset */
if ((infoPB.dirInfo.ioFlAttrib & kioFlAttribDirMask) != 0)
spec->parID = infoPB.dirInfo.ioDrDirID;
if (ptr != NULL)
*ptr = '\0';
*start = strlen(start + 1); /* make it a pstring. */
err = FSMakeFSSpec(spec->vRefNum, spec->parID,
(const unsigned char *) start, spec);
if (err != noErr) /* not an alias, really a bogus path. */
return(fnameToFSSpecNoAlias(fname, spec)); /* reset */
err = ResolveAliasFileWithMountFlags(spec, 1, &folder, &alias, 0);
if (err != noErr) /* not an alias, really a bogus path. */
return(fnameToFSSpecNoAlias(fname, spec)); /* reset */
start = ptr;
if (ptr != NULL)
ptr = strchr(start + 1, ':');
} while (start != NULL);
} /* if */
else /* there's something there; make sure final file is not an alias. */
{
BAIL_IF_MACRO(err != noErr, ERR_OS_ERROR, err);
err = ResolveAliasFileWithMountFlags(spec, 1, &folder, &alias, 0);
BAIL_IF_MACRO(err != noErr, ERR_OS_ERROR, err);
} /* else */
return(noErr); /* w00t. */
} /* fnameToFSSpec */
@ -250,7 +344,36 @@ int __PHYSFS_platformExists(const char *fname)
int __PHYSFS_platformIsSymLink(const char *fname)
{
return(0); /* !!! FIXME: What happens if (fname) is an alias? */
OSErr err;
FSSpec spec;
Boolean a = 0;
Boolean f = 0;
CInfoPBRec infoPB;
char *ptr;
char *dir = alloca(strlen(fname) + 1);
BAIL_IF_MACRO(dir == NULL, ERR_OUT_OF_MEMORY, 0);
strcpy(dir, fname);
ptr = strrchr(dir, ':');
if (ptr == NULL) /* just a volume name? Can't be a symlink. */
return(0);
/* resolve aliases up to the actual file... */
*ptr = '\0';
BAIL_IF_MACRO(fnameToFSSpec(dir, &spec) != noErr, ERR_OS_ERROR, 0);
*ptr = strlen(ptr + 1); /* ptr is now a pascal string. Yikes! */
memset(&infoPB, '\0', sizeof (CInfoPBRec));
infoPB.dirInfo.ioNamePtr = spec.name;
infoPB.dirInfo.ioVRefNum = spec.vRefNum;
infoPB.dirInfo.ioDrDirID = spec.parID;
infoPB.dirInfo.ioFDirIndex = 0;
BAIL_IF_MACRO(PBGetCatInfoSync(&infoPB) != noErr, ERR_OS_ERROR, 0);
err = FSMakeFSSpec(spec.vRefNum, infoPB.dirInfo.ioDrDirID,
(const unsigned char *) ptr, &spec);
BAIL_IF_MACRO(err != noErr, ERR_OS_ERROR, 0);
BAIL_IF_MACRO(IsAliasFile(&spec, &a, &f) != noErr, ERR_OS_ERROR, 0);
return(a);
} /* __PHYSFS_platformIsSymlink */
@ -340,6 +463,10 @@ LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
for (i = 1; i <= max; i++)
{
FSSpec aliasspec;
Boolean alias = 0;
Boolean folder = 0;
memset(&infoPB, '\0', sizeof (CInfoPBRec));
str255[0] = 0;
infoPB.dirInfo.ioNamePtr = str255; /* store name in here. */
@ -349,6 +476,17 @@ LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
if (PBGetCatInfoSync(&infoPB) != noErr)
continue; /* skip this file. Oh well. */
if (FSMakeFSSpec(spec.vRefNum, dirID, str255, &aliasspec) != noErr)
continue; /* skip it. */
if (IsAliasFile(&aliasspec, &alias, &folder) != noErr)
continue; /* skip it. */
if ((alias) && (omitSymLinks))
continue;
/* still here? Add it to the list. */
l = (LinkedStringList *) malloc(sizeof (LinkedStringList));
if (l == NULL)
break;