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Text File | 1991-02-09 | 25.4 KB | 1,253 lines |
- /* $Header: util.c,v 3.0.1.11 91/01/11 18:33:10 lwall Locked $
- *
- * Copyright (c) 1989, Larry Wall
- *
- * You may distribute under the terms of the GNU General Public License
- * as specified in the README file that comes with the perl 3.0 kit.
- *
- * $Log: util.c,v $
- * Revision 3.0.1.11 91/01/11 18:33:10 lwall
- * patch42: die could exit with 0 value on some machines
- * patch42: Configure checks typecasting behavior better
- *
- * Revision 3.0.1.10 90/11/10 02:19:28 lwall
- * patch38: random cleanup
- * patch38: sequence of s/^x//; s/x$//; could screw up malloc
- *
- * Revision 3.0.1.9 90/10/20 02:21:01 lwall
- * patch37: tried to take strlen of integer on systems without wait4 or waitpid
- * patch37: unreachable return eliminated
- *
- * Revision 3.0.1.8 90/10/16 11:26:57 lwall
- * patch29: added waitpid
- * patch29: various portability fixes
- * patch29: scripts now run at almost full speed under the debugger
- *
- * Revision 3.0.1.7 90/08/13 22:40:26 lwall
- * patch28: the NSIG hack didn't work right on Xenix
- * patch28: rename was busted on systems without rename system call
- *
- * Revision 3.0.1.6 90/08/09 05:44:55 lwall
- * patch19: fixed double include of <signal.h>
- * patch19: various MSDOS and OS/2 patches folded in
- * patch19: open(STDOUT,"|command") left wrong descriptor attached to STDOUT
- *
- * Revision 3.0.1.5 90/03/27 16:35:13 lwall
- * patch16: MSDOS support
- * patch16: support for machines that can't cast negative floats to unsigned ints
- * patch16: tail anchored pattern could dump if string to search was shorter
- *
- * Revision 3.0.1.4 90/03/01 10:26:48 lwall
- * patch9: fbminstr() called instr() rather than ninstr()
- * patch9: nested evals clobbered their longjmp environment
- * patch9: piped opens returned undefined rather than 0 in child
- * patch9: the x operator is now up to 10 times faster
- *
- * Revision 3.0.1.3 89/12/21 20:27:41 lwall
- * patch7: errno may now be a macro with an lvalue
- *
- * Revision 3.0.1.2 89/11/17 15:46:35 lwall
- * patch5: BZERO separate from BCOPY now
- * patch5: byteorder now is a hex value
- *
- * Revision 3.0.1.1 89/11/11 05:06:13 lwall
- * patch2: made dup2 a little better
- *
- * Revision 3.0 89/10/18 15:32:43 lwall
- * 3.0 baseline
- *
- */
-
- #include "EXTERN.h"
- #include "perl.h"
- #include <signal.h>
-
- #ifdef I_VFORK
- # include <vfork.h>
- #endif
-
- #ifdef I_VARARGS
- # include <varargs.h>
- #endif
-
- #ifdef I_STDARG
- # include <stdarg.h>
- #endif
-
- #define FLUSH
-
- static char nomem[] = "Out of memory!\n";
-
- /* paranoid version of malloc */
-
- #ifdef DEBUGGING
- static int an = 0;
- #endif
-
- /* NOTE: Do not call the next three routines directly. Use the macros
- * in handy.h, so that we can easily redefine everything to do tracking of
- * allocated hunks back to the original New to track down any memory leaks.
- */
-
- char *
- safemalloc(size)
- #ifdef MSDOS
- unsigned long size;
- #else
- MEM_SIZE size;
- #endif /* MSDOS */
- {
- char *ptr;
-
- #ifdef MSDOS
- if (size > 0xffff) {
- fprintf(stderr, "Allocation too large: %lx\n", size) FLUSH;
- exit(1);
- }
- #endif /* MSDOS */
- #ifdef DEBUGGING
- if ((long)size < 0)
- fatal("panic: malloc");
- #endif
- ptr = malloc(size?size:1); /* malloc(0) is NASTY on our system */
- #ifdef DEBUGGING
- if (debug & 128)
- fprintf(stderr,"%p: (%05d) malloc %d bytes\n",ptr,an++,size);
- #endif
- if (ptr == Nullch) {
- fputs(nomem,stderr) FLUSH;
- exit(1);
- }
-
- return ptr;
- }
-
- /* paranoid version of realloc */
-
- char *
- saferealloc(where,size)
- char *where;
- #ifndef MSDOS
- MEM_SIZE size;
- #else
- unsigned long size;
- #endif /* MSDOS */
- {
- char *ptr;
-
- #ifdef MSDOS
- if (size > 0xffff) {
- fprintf(stderr, "Reallocation too large: %lx\n", size) FLUSH;
- exit(1);
- }
- #endif /* MSDOS */
- if (!where)
- fatal("Null realloc");
- #ifdef DEBUGGING
- if ((long)size < 0)
- fatal("panic: realloc");
- #endif
- ptr = realloc(where,size?size:1); /* realloc(0) is NASTY on our system */
- #ifdef DEBUGGING
- if (debug & 128) {
- fprintf(stderr,"%p: (%05d) rfree\n",where,an++);
- fprintf(stderr,"%p: (%05d) realloc %d bytes\n",ptr,an++,size);
- }
- #endif
- if (ptr == Nullch) {
- fputs(nomem,stderr) FLUSH;
- exit(1);
- }
-
- return ptr;
- }
-
- /* safe version of free */
-
- void
- safefree(where)
- char *where;
- {
- #ifdef DEBUGGING
- if (debug & 128)
- fprintf(stderr,"%p: (%05d) free\n",where,an++);
- #endif
- if (where) {
- free(where);
- }
- }
-
- #ifdef LEAKTEST
-
- #define ALIGN sizeof(long)
-
- char *
- safexmalloc(x,size)
- int x;
- MEM_SIZE size;
- {
- register char *where;
-
- where = safemalloc(size + ALIGN);
- xcount[x]++;
- where[0] = x % 100;
- where[1] = x / 100;
- return where + ALIGN;
- }
-
- char *
- safexrealloc(where,size)
- char *where;
- MEM_SIZE size;
- {
- return saferealloc(where - ALIGN, size + ALIGN) + ALIGN;
- }
-
- void
- safexfree(where)
- char *where;
- {
- int x;
-
- if (!where)
- return;
- where -= ALIGN;
- x = where[0] + 100 * where[1];
- xcount[x]--;
- safefree(where);
- }
-
- void
- xstat()
- {
- register int i;
-
- for (i = 0; i < MAXXCOUNT; i++) {
- if (xcount[i] != lastxcount[i]) {
- fprintf(stderr,"%2d %2d\t%ld\n", i / 100, i % 100, xcount[i]);
- lastxcount[i] = xcount[i];
- }
- }
- }
-
- #endif /* LEAKTEST */
-
- /* copy a string up to some (non-backslashed) delimiter, if any */
-
- char *
- cpytill(to,from,fromend,delim,retlen)
- register char *to;
- register char *from;
- register char *fromend;
- register int delim;
- int *retlen;
- {
- char *origto = to;
-
- for (; from < fromend; from++,to++) {
- if (*from == '\\') {
- if (from[1] == delim)
- from++;
- else if (from[1] == '\\')
- *to++ = *from++;
- }
- else if (*from == delim)
- break;
- *to = *from;
- }
- *to = '\0';
- *retlen = to - origto;
- return from;
- }
-
- /* return ptr to little string in big string, NULL if not found */
- /* This routine was donated by Corey Satten. */
-
- char *
- instr(big, little)
- register char *big;
- register char *little;
- {
- register char *s, *x;
- register int first;
-
- if (!little)
- return big;
- first = *little++;
- if (!first)
- return big;
- while (*big) {
- if (*big++ != first)
- continue;
- for (x=big,s=little; *s; /**/ ) {
- if (!*x)
- return Nullch;
- if (*s++ != *x++) {
- s--;
- break;
- }
- }
- if (!*s)
- return big-1;
- }
- return Nullch;
- }
-
- /* same as instr but allow embedded nulls */
-
- char *
- ninstr(big, bigend, little, lend)
- register char *big;
- register char *bigend;
- char *little;
- char *lend;
- {
- register char *s, *x;
- register int first = *little;
- register char *littleend = lend;
-
- if (!first && little > littleend)
- return big;
- bigend -= littleend - little++;
- while (big <= bigend) {
- if (*big++ != first)
- continue;
- for (x=big,s=little; s < littleend; /**/ ) {
- if (*s++ != *x++) {
- s--;
- break;
- }
- }
- if (s >= littleend)
- return big-1;
- }
- return Nullch;
- }
-
- /* reverse of the above--find last substring */
-
- char *
- rninstr(big, bigend, little, lend)
- register char *big;
- char *bigend;
- char *little;
- char *lend;
- {
- register char *bigbeg;
- register char *s, *x;
- register int first = *little;
- register char *littleend = lend;
-
- if (!first && little > littleend)
- return bigend;
- bigbeg = big;
- big = bigend - (littleend - little++);
- while (big >= bigbeg) {
- if (*big-- != first)
- continue;
- for (x=big+2,s=little; s < littleend; /**/ ) {
- if (*s++ != *x++) {
- s--;
- break;
- }
- }
- if (s >= littleend)
- return big+1;
- }
- return Nullch;
- }
-
- unsigned char fold[] = {
- 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23,
- 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 33, 34, 35, 36, 37, 38, 39,
- 40, 41, 42, 43, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 54, 55,
- 56, 57, 58, 59, 60, 61, 62, 63,
- 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
- 'x', 'y', 'z', 91, 92, 93, 94, 95,
- 96, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
- 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
- 'X', 'Y', 'Z', 123, 124, 125, 126, 127,
- 128, 129, 130, 131, 132, 133, 134, 135,
- 136, 137, 138, 139, 140, 141, 142, 143,
- 144, 145, 146, 147, 148, 149, 150, 151,
- 152, 153, 154, 155, 156, 157, 158, 159,
- 160, 161, 162, 163, 164, 165, 166, 167,
- 168, 169, 170, 171, 172, 173, 174, 175,
- 176, 177, 178, 179, 180, 181, 182, 183,
- 184, 185, 186, 187, 188, 189, 190, 191,
- 192, 193, 194, 195, 196, 197, 198, 199,
- 200, 201, 202, 203, 204, 205, 206, 207,
- 208, 209, 210, 211, 212, 213, 214, 215,
- 216, 217, 218, 219, 220, 221, 222, 223,
- 224, 225, 226, 227, 228, 229, 230, 231,
- 232, 233, 234, 235, 236, 237, 238, 239,
- 240, 241, 242, 243, 244, 245, 246, 247,
- 248, 249, 250, 251, 252, 253, 254, 255
- };
-
- static unsigned char freq[] = {
- 1, 2, 84, 151, 154, 155, 156, 157,
- 165, 246, 250, 3, 158, 7, 18, 29,
- 40, 51, 62, 73, 85, 96, 107, 118,
- 129, 140, 147, 148, 149, 150, 152, 153,
- 255, 182, 224, 205, 174, 176, 180, 217,
- 233, 232, 236, 187, 235, 228, 234, 226,
- 222, 219, 211, 195, 188, 193, 185, 184,
- 191, 183, 201, 229, 181, 220, 194, 162,
- 163, 208, 186, 202, 200, 218, 198, 179,
- 178, 214, 166, 170, 207, 199, 209, 206,
- 204, 160, 212, 216, 215, 192, 175, 173,
- 243, 172, 161, 190, 203, 189, 164, 230,
- 167, 248, 227, 244, 242, 255, 241, 231,
- 240, 253, 169, 210, 245, 237, 249, 247,
- 239, 168, 252, 251, 254, 238, 223, 221,
- 213, 225, 177, 197, 171, 196, 159, 4,
- 5, 6, 8, 9, 10, 11, 12, 13,
- 14, 15, 16, 17, 19, 20, 21, 22,
- 23, 24, 25, 26, 27, 28, 30, 31,
- 32, 33, 34, 35, 36, 37, 38, 39,
- 41, 42, 43, 44, 45, 46, 47, 48,
- 49, 50, 52, 53, 54, 55, 56, 57,
- 58, 59, 60, 61, 63, 64, 65, 66,
- 67, 68, 69, 70, 71, 72, 74, 75,
- 76, 77, 78, 79, 80, 81, 82, 83,
- 86, 87, 88, 89, 90, 91, 92, 93,
- 94, 95, 97, 98, 99, 100, 101, 102,
- 103, 104, 105, 106, 108, 109, 110, 111,
- 112, 113, 114, 115, 116, 117, 119, 120,
- 121, 122, 123, 124, 125, 126, 127, 128,
- 130, 131, 132, 133, 134, 135, 136, 137,
- 138, 139, 141, 142, 143, 144, 145, 146
- };
-
- void
- fbmcompile(str, iflag)
- STR *str;
- int iflag;
- {
- register unsigned char *s;
- register unsigned char *table;
- register int i;
- register int len = str->str_cur;
- int rarest = 0;
- unsigned int frequency = 256;
-
- Str_Grow(str,len+258);
- #ifndef lint
- table = (unsigned char*)(str->str_ptr + len + 1);
- #else
- table = Null(unsigned char*);
- #endif
- s = table - 2;
- for (i = 0; i < 256; i++) {
- table[i] = len;
- }
- i = 0;
- #ifndef lint
- while (s >= (unsigned char*)(str->str_ptr))
- #endif
- {
- if (table[*s] == len) {
- #ifndef pdp11
- if (iflag)
- table[*s] = table[fold[*s]] = i;
- #else
- if (iflag) {
- int j;
- j = fold[*s];
- table[j] = i;
- table[*s] = i;
- }
- #endif /* pdp11 */
- else
- table[*s] = i;
- }
- s--,i++;
- }
- str->str_pok |= SP_FBM; /* deep magic */
-
- #ifndef lint
- s = (unsigned char*)(str->str_ptr); /* deeper magic */
- #else
- s = Null(unsigned char*);
- #endif
- if (iflag) {
- register unsigned int tmp, foldtmp;
- str->str_pok |= SP_CASEFOLD;
- for (i = 0; i < len; i++) {
- tmp=freq[s[i]];
- foldtmp=freq[fold[s[i]]];
- if (tmp < frequency && foldtmp < frequency) {
- rarest = i;
- /* choose most frequent among the two */
- frequency = (tmp > foldtmp) ? tmp : foldtmp;
- }
- }
- }
- else {
- for (i = 0; i < len; i++) {
- if (freq[s[i]] < frequency) {
- rarest = i;
- frequency = freq[s[i]];
- }
- }
- }
- str->str_rare = s[rarest];
- str->str_state = rarest;
- #ifdef DEBUGGING
- if (debug & 512)
- fprintf(stderr,"rarest char %c at %d\n",str->str_rare, str->str_state);
- #endif
- }
-
- char *
- fbminstr(big, bigend, littlestr)
- unsigned char *big;
- register unsigned char *bigend;
- STR *littlestr;
- {
- register unsigned char *s;
- register int tmp;
- register int littlelen;
- register unsigned char *little;
- register unsigned char *table;
- register unsigned char *olds;
- register unsigned char *oldlittle;
-
- #ifndef lint
- if (!(littlestr->str_pok & SP_FBM))
- return ninstr((char*)big,(char*)bigend,
- littlestr->str_ptr, littlestr->str_ptr + littlestr->str_cur);
- #endif
-
- littlelen = littlestr->str_cur;
- #ifndef lint
- if (littlestr->str_pok & SP_TAIL && !multiline) { /* tail anchored? */
- if (littlelen > bigend - big)
- return Nullch;
- little = (unsigned char*)littlestr->str_ptr;
- if (littlestr->str_pok & SP_CASEFOLD) { /* oops, fake it */
- big = bigend - littlelen; /* just start near end */
- if (bigend[-1] == '\n' && little[littlelen-1] != '\n')
- big--;
- }
- else {
- s = bigend - littlelen;
- if (*s == *little && bcmp(s,little,littlelen)==0)
- return (char*)s; /* how sweet it is */
- else if (bigend[-1] == '\n' && little[littlelen-1] != '\n'
- && s > big) {
- s--;
- if (*s == *little && bcmp(s,little,littlelen)==0)
- return (char*)s;
- }
- return Nullch;
- }
- }
- table = (unsigned char*)(littlestr->str_ptr + littlelen + 1);
- #else
- table = Null(unsigned char*);
- #endif
- if (--littlelen >= bigend - big)
- return Nullch;
- s = big + littlelen;
- oldlittle = little = table - 2;
- if (littlestr->str_pok & SP_CASEFOLD) { /* case insensitive? */
- if (s < bigend) {
- top1:
- if ((tmp = table[*s]) != 0) {
- #ifdef POINTERRIGOR
- if (bigend - s > tmp) {
- s += tmp;
- goto top1;
- }
- #else
- if ((s += tmp) < bigend)
- goto top1;
- #endif
- return Nullch;
- }
- else {
- tmp = littlelen; /* less expensive than calling strncmp() */
- olds = s;
- while (tmp--) {
- if (*--s == *--little || fold[*s] == *little)
- continue;
- s = olds + 1; /* here we pay the price for failure */
- little = oldlittle;
- if (s < bigend) /* fake up continue to outer loop */
- goto top1;
- return Nullch;
- }
- #ifndef lint
- return (char *)s;
- #endif
- }
- }
- }
- else {
- if (s < bigend) {
- top2:
- if ((tmp = table[*s]) != 0) {
- #ifdef POINTERRIGOR
- if (bigend - s > tmp) {
- s += tmp;
- goto top2;
- }
- #else
- if ((s += tmp) < bigend)
- goto top2;
- #endif
- return Nullch;
- }
- else {
- tmp = littlelen; /* less expensive than calling strncmp() */
- olds = s;
- while (tmp--) {
- if (*--s == *--little)
- continue;
- s = olds + 1; /* here we pay the price for failure */
- little = oldlittle;
- if (s < bigend) /* fake up continue to outer loop */
- goto top2;
- return Nullch;
- }
- #ifndef lint
- return (char *)s;
- #endif
- }
- }
- }
- return Nullch;
- }
-
- char *
- screaminstr(bigstr, littlestr)
- STR *bigstr;
- STR *littlestr;
- {
- register unsigned char *s, *x;
- register unsigned char *big;
- register int pos;
- register int previous;
- register int first;
- register unsigned char *little;
- register unsigned char *bigend;
- register unsigned char *littleend;
-
- if ((pos = screamfirst[littlestr->str_rare]) < 0)
- return Nullch;
- #ifndef lint
- little = (unsigned char *)(littlestr->str_ptr);
- #else
- little = Null(unsigned char *);
- #endif
- littleend = little + littlestr->str_cur;
- first = *little++;
- previous = littlestr->str_state;
- #ifndef lint
- big = (unsigned char *)(bigstr->str_ptr);
- #else
- big = Null(unsigned char*);
- #endif
- bigend = big + bigstr->str_cur;
- big -= previous;
- while (pos < previous) {
- #ifndef lint
- if (!(pos += screamnext[pos]))
- #endif
- return Nullch;
- }
- if (littlestr->str_pok & SP_CASEFOLD) { /* case insignificant? */
- do {
- if (big[pos] != first && big[pos] != fold[first])
- continue;
- for (x=big+pos+1,s=little; s < littleend; /**/ ) {
- if (x >= bigend)
- return Nullch;
- if (*s++ != *x++ && fold[*(s-1)] != *(x-1)) {
- s--;
- break;
- }
- }
- if (s == littleend)
- #ifndef lint
- return (char *)(big+pos);
- #else
- return Nullch;
- #endif
- } while (
- #ifndef lint
- pos += screamnext[pos] /* does this goof up anywhere? */
- #else
- pos += screamnext[0]
- #endif
- );
- }
- else {
- do {
- if (big[pos] != first)
- continue;
- for (x=big+pos+1,s=little; s < littleend; /**/ ) {
- if (x >= bigend)
- return Nullch;
- if (*s++ != *x++) {
- s--;
- break;
- }
- }
- if (s == littleend)
- #ifndef lint
- return (char *)(big+pos);
- #else
- return Nullch;
- #endif
- } while (
- #ifndef lint
- pos += screamnext[pos]
- #else
- pos += screamnext[0]
- #endif
- );
- }
- return Nullch;
- }
-
- /* copy a string to a safe spot */
-
- char *
- savestr(str)
- char *str;
- {
- register char *newaddr;
-
- New(902,newaddr,strlen(str)+1,char);
- (void)strcpy(newaddr,str);
- return newaddr;
- }
-
- /* same thing but with a known length */
-
- char *
- nsavestr(str, len)
- char *str;
- register int len;
- {
- register char *newaddr;
-
- New(903,newaddr,len+1,char);
- (void)bcopy(str,newaddr,len); /* might not be null terminated */
- newaddr[len] = '\0'; /* is now */
- return newaddr;
- }
-
- /* grow a static string to at least a certain length */
-
- void
- growstr(strptr,curlen,newlen)
- char **strptr;
- int *curlen;
- int newlen;
- {
- if (newlen > *curlen) { /* need more room? */
- if (*curlen)
- Renew(*strptr,newlen,char);
- else
- New(905,*strptr,newlen,char);
- *curlen = newlen;
- }
- }
-
- #ifndef STDARG
- #ifndef VARARGS
- /*VARARGS1*/
- mess(pat,a1,a2,a3,a4)
- char *pat;
- long a1, a2, a3, a4;
- {
- char *s;
-
- s = buf;
- (void)sprintf(s,pat,a1,a2,a3,a4);
- s += strlen(s);
- if (s[-1] != '\n') {
- if (curcmd->c_line) {
- (void)sprintf(s," at %s line %ld",
- stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line);
- s += strlen(s);
- }
- if (last_in_stab &&
- stab_io(last_in_stab) &&
- stab_io(last_in_stab)->lines ) {
- (void)sprintf(s,", <%s> line %ld",
- last_in_stab == argvstab ? "" : stab_name(last_in_stab),
- (long)stab_io(last_in_stab)->lines);
- s += strlen(s);
- }
- (void)strcpy(s,".\n");
- }
- }
-
- /*VARARGS1*/
- fatal(pat,a1,a2,a3,a4)
- char *pat;
- long a1, a2, a3, a4;
- {
- extern FILE *e_fp;
- extern char *e_tmpname;
- char *tmps;
-
- mess(pat,a1,a2,a3,a4);
- if (in_eval) {
- str_set(stab_val(stabent("@",TRUE)),buf);
- tmps = "_EVAL_";
- while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label ||
- strNE(tmps,loop_stack[loop_ptr].loop_label) )) {
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Skipping label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- loop_ptr--;
- }
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Found label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- if (loop_ptr < 0) {
- in_eval = 0;
- fatal("Bad label: %s", tmps);
- }
- longjmp(loop_stack[loop_ptr].loop_env, 1);
- }
- fputs(buf,stderr);
- (void)fflush(stderr);
- if (e_fp)
- (void)UNLINK(e_tmpname);
- exit (statusvalue ? statusvalue : 255);
- }
-
- /*VARARGS1*/
- warn(pat,a1,a2,a3,a4)
- char *pat;
- long a1, a2, a3, a4;
- {
- mess(pat,a1,a2,a3,a4);
- fputs(buf,stderr);
- #ifdef LEAKTEST
- #ifdef DEBUGGING
- if (debug & 4096)
- xstat();
- #endif
- #endif
- (void)fflush(stderr);
- }
- #else /* VARARGS */
- /*VARARGS0*/
- void
- mess(args)
- va_list args;
- {
- char *pat;
- char *s;
-
- s = buf;
- #ifdef lint
- pat = Nullch;
- #else
- pat = va_arg(args, char *);
- #endif
- (void) vsprintf(s,pat,args);
-
- s += strlen(s);
- if (s[-1] != '\n') {
- if (curcmd->c_line) {
- (void)sprintf(s," at %s line %ld",
- stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line);
- s += strlen(s);
- }
- if (last_in_stab &&
- stab_io(last_in_stab) &&
- stab_io(last_in_stab)->lines ) {
- (void)sprintf(s,", <%s> line %ld",
- last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr,
- (long)stab_io(last_in_stab)->lines);
- s += strlen(s);
- }
- (void)strcpy(s,".\n");
- }
- }
-
- /*VARARGS0*/
- void
- fatal(va_alist)
- va_dcl
- {
- va_list args;
- extern FILE *e_fp;
- extern char *e_tmpname;
- char *tmps;
-
- #ifndef lint
- va_start(args);
- #else
- args = 0;
- #endif
- mess(args);
- va_end(args);
- if (in_eval) {
- str_set(stab_val(stabent("@",TRUE)),buf);
- tmps = "_EVAL_";
- while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label ||
- strNE(tmps,loop_stack[loop_ptr].loop_label) )) {
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Skipping label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- loop_ptr--;
- }
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Found label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- if (loop_ptr < 0) {
- in_eval = 0;
- fatal("Bad label: %s", tmps);
- }
- longjmp(loop_stack[loop_ptr].loop_env, 1);
- }
- fputs(buf,stderr);
- (void)fflush(stderr);
- if (e_fp)
- (void)UNLINK(e_tmpname);
- exit (statusvalue ? statusvalue : 255);
- }
-
- /*VARARGS0*/
- void
- warn(va_alist)
- va_dcl
- {
- va_list args;
-
- #ifndef lint
- va_start(args);
- #else
- args = 0;
- #endif
- mess(args);
- va_end(args);
-
- fputs(buf,stderr);
- #ifdef LEAKTEST
- #ifdef DEBUGGING
- if (debug & 4096)
- xstat();
- #endif
- #endif
- (void)fflush(stderr);
- }
- #endif /* VARARGS */
- #else /* STDARG */
-
- /*VARARGS0*/
- void
- vmess(char *pat, va_list ap)
- {
- char *s;
-
- s = buf;
-
- (void) vsprintf(s,pat,ap);
-
- s += strlen(s);
- if (s[-1] != '\n') {
- if (curcmd->c_line) {
- (void)sprintf(s," at %s line %ld",
- stab_val(curcmd->c_filestab)->str_ptr, (long)curcmd->c_line);
- s += strlen(s);
- }
- if (last_in_stab &&
- stab_io(last_in_stab) &&
- stab_io(last_in_stab)->lines ) {
- (void)sprintf(s,", <%s> line %ld",
- last_in_stab == argvstab ? "" : last_in_stab->str_magic->str_ptr,
- (long)stab_io(last_in_stab)->lines);
- s += strlen(s);
- }
- (void)strcpy(s,".\n");
- }
- }
-
- /*VARARGS0*/
- void
- mess(char *pat, ...)
- {
- va_list ap;
-
- va_start(ap,pat);
- (void) vmess(pat,ap);
- va_end(ap);
- }
-
- /*VARARGS0*/
- void
- fatal(char *pat, ...)
- {
- va_list ap;
- extern FILE *e_fp;
- extern char *e_tmpname;
- char *tmps;
-
- va_start(ap,pat);
- vmess(pat,ap);
- va_end(ap);
-
- if (in_eval) {
- str_set(stab_val(stabent("@",TRUE)),buf);
- tmps = "_EVAL_";
- while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label ||
- strNE(tmps,loop_stack[loop_ptr].loop_label) )) {
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Skipping label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- loop_ptr--;
- }
- #ifdef DEBUGGING
- if (debug & 4) {
- deb("(Found label #%d %s)\n",loop_ptr,
- loop_stack[loop_ptr].loop_label);
- }
- #endif
- if (loop_ptr < 0) {
- in_eval = 0;
- fatal("Bad label: %s", tmps);
- }
- longjmp(loop_stack[loop_ptr].loop_env, 1);
- }
- fputs(buf,stderr);
- (void)fflush(stderr);
- if (e_fp)
- (void)UNLINK(e_tmpname);
- exit (statusvalue ? statusvalue : 255);
- }
-
- /*VARARGS0*/
- void
- warn(char *pat, ...)
- {
- va_list ap;
-
- va_start(ap,pat);
- vmess(pat,ap);
- va_end(ap);
-
- fputs(buf,stderr);
- #ifdef LEAKTEST
- #ifdef DEBUGGING
- if (debug & 4096)
- xstat();
- #endif
- #endif
- (void)fflush(stderr);
- }
- #endif /* STDARG */
-
- #ifndef ARM
- static bool firstsetenv = TRUE;
- extern char **environ;
-
- void
- setenv(nam,val)
- char *nam, *val;
- {
- register int i=envix(nam); /* where does it go? */
-
- if (!val) {
- while (environ[i]) {
- environ[i] = environ[i+1];
- i++;
- }
- return;
- }
- if (!environ[i]) { /* does not exist yet */
- if (firstsetenv) { /* need we copy environment? */
- int j;
- char **tmpenv;
-
- New(901,tmpenv, i+2, char*);
- firstsetenv = FALSE;
- for (j=0; j<i; j++) /* copy environment */
- tmpenv[j] = environ[j];
- environ = tmpenv; /* tell exec where it is now */
- }
- else
- Renew(environ, i+2, char*); /* just expand it a bit */
- environ[i+1] = Nullch; /* make sure it's null terminated */
- }
- New(904, environ[i], strlen(nam) + strlen(val) + 2, char);
- /* this may or may not be in */
- /* the old environ structure */
- #ifndef MSDOS
- (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
- #else
- /* MS-DOS requires environment variable names to be in uppercase */
- strcpy(environ[i],nam); strupr(environ[i],nam);
- (void)sprintf(environ[i] + strlen(nam),"=%s",val);
- #endif /* MSDOS */
- }
-
- int
- envix(nam)
- char *nam;
- {
- register int i, len = strlen(nam);
-
- for (i = 0; environ[i]; i++) {
- if (strnEQ(environ[i],nam,len) && environ[i][len] == '=')
- break; /* strnEQ must come first to avoid */
- } /* potential SEGV's */
- return i;
- }
- #endif
-
- #ifdef EUNICE
- unlnk(f) /* unlink all versions of a file */
- char *f;
- {
- int i;
-
- for (i = 0; unlink(f) >= 0; i++) ;
- return i ? 0 : -1;
- }
- #endif
-
- #ifndef MEMCPY
- #ifndef BCOPY
- char *
- bcopy(from,to,len)
- register char *from;
- register char *to;
- register int len;
- {
- char *retval = to;
-
- while (len--)
- *to++ = *from++;
- return retval;
- }
- #endif
-
- #ifndef BZERO
- char *
- bzero(loc,len)
- register char *loc;
- register int len;
- {
- char *retval = loc;
-
- while (len--)
- *loc++ = 0;
- return retval;
- }
- #endif
- #endif
-
- #ifdef VARARGS
- #ifndef VPRINTF
-
- #ifdef CHARVSPRINTF
- char *
- #else
- int
- #endif
- vsprintf(dest, pat, args)
- char *dest, *pat, *args;
- {
- FILE fakebuf;
-
- fakebuf._ptr = dest;
- fakebuf._cnt = 32767;
- fakebuf._flag = _IOWRT|_IOSTRG;
- _doprnt(pat, args, &fakebuf); /* what a kludge */
- (void)putc('\0', &fakebuf);
- #ifdef CHARVSPRINTF
- return(dest);
- #else
- return 0; /* perl doesn't use return value */
- #endif
- }
-
- #ifdef DEBUGGING
- int
- vfprintf(fd, pat, args)
- FILE *fd;
- char *pat, *args;
- {
- _doprnt(pat, args, fd);
- return 0; /* wrong, but perl doesn't use the return value */
- }
- #endif
- #endif /* VPRINTF */
- #endif /* VARARGS */
-
- void
- repeatcpy(to,from,len,count)
- register char *to;
- register char *from;
- int len;
- register int count;
- {
- register int todo;
- register char *frombase = from;
-
- if (len == 1) {
- todo = *from;
- while (count-- > 0)
- *to++ = todo;
- return;
- }
- while (count-- > 0) {
- for (todo = len; todo > 0; todo--) {
- *to++ = *from++;
- }
- from = frombase;
- }
- }
-
- #ifndef CASTNEGFLOAT
- unsigned long
- castulong(f)
- double f;
- {
- long along;
-
- #if CASTFLAGS & 2
- # define BIGDOUBLE 2147483648.0
- if (f >= BIGDOUBLE)
- return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
- #endif
- if (f >= 0.0)
- return (unsigned long)f;
- along = (long)f;
- return (unsigned long)along;
- }
- #endif
-