char *dfntruename(const char * const fnam)
{ char *h;
struct REGPACK r;
DBG_ENTER("dfntruename", Suppl_dfn)
assert(fnam);
DBG_ARGUMENTS( ("fnam=\"%s\"", fnam) )
chkHeap
if((h = eno_malloc(DFN_FILENAME_BUFFER_LENGTH)) != 0) {
#ifdef FEATURE_LONG_FILENAMES
r.r_ax = 0x7160;
r.r_cx = 0x02;
#else
r.r_ax = 0x6000;
#endif
r.r_ds = FP_SEG(fnam);
r.r_si = FP_OFF(fnam);
r.r_es = FP_SEG(h);
r.r_di = FP_OFF(h);
chkHeap
intr( 0x21, &r );
#ifdef FEATURE_LONG_FILENAMES
if( ( r.r_flags & 1 ) || r.r_ax == 0x7100 ) {
r.r_ax = 0x6000;
intr( 0x21, &r );
#endif
if(( r.r_flags & 1 ) ? r.r_ax : 0) { /* failed */
eno_setOSerror( r.r_ax);
free(h);
DBG_RETURN_S( 0)
}
register char *StrConcat(int argcnt)
{ unsigned cnt, *poi;
unsigned Xcnt, *Xpoi;
unsigned length;
char *h, *p;
DBG_ENTER1
cnt = nargs();
DBG_ENTER2("StrConcat", "dynstr")
DBG_ARGUMENTS( ("argcnt=%u cnt=%u", argcnt, cnt) )
Xpoi = poi = cnt * 2 - 2 + &argcnt;
Xcnt = cnt = min(cnt, *poi);
for(length = 1; cnt--;)
if(*--poi) length += strlen(*poi);
chkHeap
if((h = p = eno_malloc(length)) == 0)
DBG_RETURN_S( 0)
chkHeap
while(Xcnt--)
if(*--Xpoi)
p = stpcpy(p, *Xpoi);
chkHeap
DBG_RETURN_S( h)
}
int invokeDOS(IREGS *prp)
{ DBG_ENTER("invokeDOS", Suppl_portable)
assert(prp);
DBG_ARGUMENTS( ("AX=0x%04x", prp->r_ax) )
int86(0x21, prp, prp);
DBG_RETURN_BI( (prp->x.cflag)? prp->x.ax: 0)
}
int eno_setOSerror(int errnr)
{
#ifdef __TURBOC__
int eno;
#endif
DBG_ENTER("eno_setOSerror", Suppl_error)
DBG_ARGUMENTS( ("errnr=%u", errnr) )
#ifdef __TURBOC__
if((unsigned)errnr > 88) {
DBG_INFO( ("Errnr exceeds range") )
eno = EFAULT;
} else {
eno = _dosErrorToSV[errnr];
}
errno = eno;
DBG_RETURN_BI(_doserrno = errnr)
#elif __WATCOMC__
__set_errno_dos(errnr);
DBG_RETURN_I( errnr)
#endif
}
int dfnmatchext(const char * const fnam , const char *pattern)
{ char *p;
DBG_ENTER("dfnmatchext", Suppl_dfn)
assert(fnam);
assert(pattern);
DBG_ARGUMENTS( ("fnam=\"%s\", pattern=\"%s\"", fnam, pattern) )
/* find extension in filename */
p = dfnfilenameext(fnam);
assert(p);
assert(*p == '\0' || *p == '.');
if(!*p) {
/* No dot --> no extension */
DBG_RETURN_I(*pattern == 0);
}
if(*pattern == '.') /* one dot is optional */
++pattern;
#ifdef OS_DOS
/* At most one extension in DOS mode */
DBG_RETURN_BI(dfnmatchcomponent(p + 1, pattern))
#else
/* Try each extension as the pattern may include the asterisk */
do if(dfnmatchcomponent2(p + 1, pattern)) {
DBG_RETURN_I(1)
} while(0 != (p = strchr(p + 1, '.')));
DBG_RETURN_I(0)
#endif
}
void env_clear(word segm)
{
DBG_ENTER("env_clear", "env")
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
unless_segm(segm)
DBG_EXIT /* no source environment */
DBG_ARGUMENTS( ("effective env=%u", segm) )
ENV_CLEAR_SEGM(segm);
chkMem
DBG_EXIT
}
word nxtMCB(word mcb)
{ DBG_ENTER("nxtMCB", Suppl_mcb)
DBG_ARGUMENTS( ("MCB=%u", mcb) )
assert(mcb);
DBG_RETURN_BI( peekb(mcb, 0) == 'M'
? MCB2SEG(mcb) + peekw(mcb, MCB_OFF_SIZE)
: 0)
}
word env_freeCount(const word segm)
{ DBG_ENTER("env_firstCount", Suppl_env)
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
assert(segm != 0);
DBG_RETURN_BU( mcb_length(segm) - env_firstFree(segm))
}
word env_firstFree(const word segm)
{ DBG_ENTER("env_firstFree", Suppl_env)
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
assert(segm != 0);
DBG_RETURN_BU( env_string(segm, env_strings(segm)))
}
void env_delete(word segm)
{ DBG_ENTER("env_delete", Suppl_env)
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
unless_segm(segm)
DBG_EXIT
DBG_ARGUMENTS( ("effective env=%u", segm) )
pokew(SEG2MCB(segm), MCB_OFF_OWNER, _psp);
freeBlk(segm);
chkMem
/* Make sure the deleted segment won't be referenced */
env_relocateSegment(segm, 0);
DBG_EXIT
}
char *dfnsqueeze(const char * const fnam)
{ char *p, *h, *q;
#ifdef SUPPORT_UNC_PATH
DBG_ENTER("dfnusqueeze", Suppl_dfn)
#else
DBG_ENTER("dfnsqueeze", Suppl_dfn)
#endif
DBG_ARGUMENTS( ("fnam=\"%s\"", fnam) )
if(!fnam || (h = q = eno_strdup(fnam)) == 0)
DBG_RETURN_S( 0)
#ifdef SUPPORT_UNC_PATH
if(isUNCpath(q)) /* keep the two backslashes */
q += 2;
#endif
p = q; /* where to begin to squeeze */
/* First: Flip the slashes */
while((q = strchr(q, '/')) != 0)
*q = '\\';
/* Second: Squeeze & upcase */
q = p;
chkHeap
do {
redo:
if(*q == '\\') { /* possibly to be squeezed */
if(q[1] == '\\') { /* Squeeze '\\\\' -> '\\' */
++q;
goto redo;
}
if(q[1] == '.') {
if(q[2] == '\\') { /* squeeze '\\.\\' -> '\\' */
q += 2;
goto redo;
}
#if 0 /* this may lead to confusion -- 2000/06/07 ska*/
if(q[2] == '\0') { /* squeeze '\\.\0' -> '\\' */
*p = '\\';
*++p = NUL;
break;
}
#endif
}
}
} while((*p++ = toFUpper(*q++)) != 0);
chkHeap
DBG_RETURN_BS( StrTrim(h))
}
DFN_GLOB *dfnglobinit(const char * const pattern, unsigned flags)
{ const char *p;
DFN_GLOB *g;
DBG_ENTER("dfnglobinit", Suppl_dfn)
DBG_ARGUMENTS( ("pattern=\"%s\", flags=0x%04x", pattern, flags) )
if(!pattern || !*pattern) {
eno_set(EINVAL);
DBG_RETURN_P(0)
}
/*
* Duplicate a portion of a string
*/
char *StrDupe(const char * const beg, const char * const end)
{ char *p;
size_t len;
DBG_ENTER("StrDupe", Suppl_dynstr)
DBG_ARGUMENTS( ("begin=%p, end=%p", beg, end) )
if(!beg) {
eno_set(EINVAL);
DBG_RETURN_S( 0)
}
char *dfnglobfilename(DFN_GLOB * const g)
{
struct ffblk *ff;
DBG_ENTER("dfnglobfilename", Suppl_dfn)
DBG_ARGUMENTS( ("glob=\"%p\"", g) )
if(!g) {
eno_set(EINVAL);
DBG_RETURN_S(0)
}
char *dfnpath(int drive)
{ char *h;
DBG_ENTER("dfnpath", Suppl_dfn)
DBG_ARGUMENTS( ("drive=%u ('%c')", drive, drive < 32? '.': drive) )
if(isupper(drive)) drive -= 'A' - 1;
else if(islower(drive)) drive -= 'a' - 1;
else if((unsigned)drive > 32) {
eno_set( ENODEV);
DBG_RETURN_S( 0)
}
int commit(int fd)
{ struct REGPACK r;
DBG_ENTER("commit", "supplio")
DBG_ARGUMENTS( ("fd=%d", fd) )
if(fd != -1) {
r.r_ax = 0x6800;
r.r_bx = fd;
intr( 0x21, &r );
DBG_RETURN_BI( r.r_flags & 1 ? r.r_ax : 0 )
}
void *eno_malloc(const size_t len)
{ void *h;
DBG_ENTER("eno_malloc", Suppl_error)
DBG_ARGUMENTS( ("size=%u", len) )
chkHeap
if(0 == (h = malloc(len)))
eno_set( ENOMEM);
chkHeap
DBG_RETURN_P(h)
}
/*
* Reallocate a chunk of memory and terminate the application on failure
*/
void *Erealloc(void *p1, size_t size)
{ void *p;
DBG_ENTER("Erealloc", Suppl_error)
DBG_ARGUMENTS( ("poi=%p, new_len=%u", p1, size) )
chkHeap
if((p = realloc(p1, size)) == 0 && size)
Esuppl_noMem();
chkHeap
DBG_RETURN_P( p)
}
/*
* Replace the contents of a string variable with another string
*/
char *Estrchg_(char ** const var, const char * const str)
{ DBG_ENTER("Estrchg_", Suppl_error)
assert(var);
DBG_ARGUMENTS( ("*var=%p, str=\"%s\"", *var, str) )
chkHeap
free(*var);
chkHeap
DBG_RETURN_BS( *var = Estrdup(str))
}
/*
* Allocate a chunk of memory
* On failure: Terminate with an error message
*/
void *Emalloc(size_t size)
{ byte *h;
DBG_ENTER("Emalloc", Suppl_error)
DBG_ARGUMENTS( ("len=%u", size) )
chkHeap
if((h = malloc(size)) == 0)
Esuppl_noMem();
chkHeap
DBG_RETURN_P( h)
}
int env_nullStrings(word segm)
{ word ofs;
DBG_ENTER("env_nullStrings", Suppl_env)
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
unless_segm(segm)
DBG_RETURN_I( ESUPPL_NOENV)
DBG_ARGUMENTS( ("effective env=%u", segm) )
ofs = env_endOfVars(segm) + 1; /* offset of string counter word */
if(mcb_length(segm) - 2 <= ofs)
DBG_RETURN_I( ESUPPL_NOMEM)
pokew(segm, ofs, 0);
chkMem
DBG_RETURN_I( ESUPPL_OK)
}
char *StrChar(int ch)
{ char *h;
DBG_ENTER("StrChar", Suppl_dynstr)
DBG_ARGUMENTS( ("ch='%c' (0x02x)", ch > 32? ch: ' ', ch) )
chkHeap
if((h = eno_strdup(" ")) != 0)
*h = ch;
chkHeap
DBG_RETURN_S( h)
}
char *dfnfilename(const char * const fnam)
{ const char *p;
DBG_ENTER("dfnfilename", Suppl_dfn)
if(!fnam) DBG_RETURN_S( 0)
DBG_ARGUMENTS( ("fnam=\"%s\"", fnam) )
p = strchr(fnam, '\0');
while(--p >= fnam && !dfndelim2(*p));
DBG_RETURN_S( (char*)p + 1)
}
word env_findVar(const word segm, const char * const var)
{ word offset;
int len;
DBG_ENTER("env_findVar", Suppl_env)
DBG_ARGUMENTS( ("env=%u, var=\"%s\"", segm, var) )
chkMem
/* for security reason, check if environment is present at all */
if(!segm || !var) {
eno_set(EINVAL);
DBG_RETURN_U( -1) /* No env --> no var can be found */
}
int mcb_allParents(word mcb, MCB_WALKFUNC fct, void *arg)
{ word mcb1;
DBG_ENTER("mcb_allParents", Suppl_mcb)
DBG_ARGUMENTS( ("mcb=%u", mcb) )
assert(fct);
if(mcb) {
if(!isPSP(mcb)) {
DBG_STRING("Invalid MCB")
DBG_RETURN_I( -1)
}
}
else mcb = _psp;
word env_endOfVars(const word segm)
{ word offset;
DBG_ENTER("env_endOfVars", Suppl_env)
DBG_ARGUMENTS( ("env=%u", segm) )
chkMem
assert(segm != 0);
offset = 0; /* env starts always at location 0 */
while(peekb(segm, offset)) /* there is a variable */
offset += env_varlen(segm, offset);
DBG_RETURN_U( offset) /* This is the terminator byte */
}
int MemiCmp(const byte *s, const byte *p, unsigned len)
{ int result;
DBG_ENTER("MemiCmp", Suppl_nls)
DBG_ARGUMENTS( ("s1=\"%s\", s2=\"%s\", len=%u", s, p, len) )
if(!len)
DBG_RETURN_I(0)
if(p == 0)
DBG_RETURN_I(s != 0)
if(s == 0)
DBG_RETURN_I(-1)
while((result = toUpper(*s++) - toUpper(*p++)) == 0 && --len);
DBG_RETURN_I( result)
}
int dfnwrdir(const char * const fnam)
{ char *p; /* temporary filename */
DBG_ENTER("dfnwrdir", Suppl_dfn)
DBG_ARGUMENTS( ("fnam=\"%s\"", fnam) )
assert(fnam);
chkHeap
if((p = dfnmktmp(fnam, 0)) == 0) /* failed --> error */
DBG_RETURN_I( 1)
remove(p); /* dfnmktmp() creates the file */
free(p);
chkHeap
DBG_RETURN_I( 0)
}
void env_subVarOffset(word segm, word offset)
{ register unsigned moveStart;
DBG_ENTER("env_subVarOffset", Suppl_env)
DBG_ARGUMENTS( ("env=%u, ofs=%u", segm, offset) )
chkMem
assert(segm);
assert(offset < env_endOfVars(segm));
moveStart = offset + env_varlen(segm, offset);
_fmemmove(MK_FP(segm, offset), MK_FP(segm, moveStart),
env_firstFree(segm) - moveStart);
chkMem
DBG_EXIT
}
word mcb_owner(word mcb)
{ word mcb1;
DBG_ENTER("mcb_owner", Suppl_mcb)
DBG_ARGUMENTS( ("mcb=%u", mcb) )
/* A PSP can be identified that the MCB has stored itself as the
owner process. In some circumstances the "owner" field does
not mention a process, but some other memory block allocated
by a process. This loop resolves this situation and correctly
returns a MCB of a PSP.
Unused and system MCBs force this function to return with
value "0" (zero) meaning "no owner found".
*/
do if((mcb1 = mcb) <= 0x40) {
DBG_RETURN_I( 0)
} while((mcb = peekw(mcb, MCB_OFF_OWNER)) != 0
&& (mcb = SEG2MCB(mcb)) != mcb1);
DBG_RETURN_I( mcb)
}
