InfoMagic Source Code 1993 July

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C/C++ Source or Header | 1991-11-04 | 10.3 KB | 408 lines

/*- * Copyright (c) 1980, 1991 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)err.c 5.12 (Berkeley) 11/4/91"; #endif /* not lint */ #include <sys/types.h> #include <stdlib.h> #include <unistd.h> #if __STDC__ # include <stdarg.h> #else # include <varargs.h> #endif #include "csh.h" #include "extern.h" char *seterr = NULL; /* Holds last error if there was one */ #define ERR_FLAGS 0xf0000000 #define ERR_NAME 0x10000000 #define ERR_SILENT 0x20000000 #define ERR_OLD 0x40000000 static char *errorlist[] = { #define ERR_SYNTAX 0 "Syntax Error", #define ERR_NOTALLOWED 1 "%s is not allowed", #define ERR_WTOOLONG 2 "Word too long", #define ERR_LTOOLONG 3 "$< line too long", #define ERR_DOLZERO 4 "No file for $0", #define ERR_DOLQUEST 5 "$? not allowed here", #define ERR_INCBR 6 "Incomplete [] modifier", #define ERR_EXPORD 7 "$ expansion must end before ]", #define ERR_BADMOD 8 "Bad : modifier in $ (%c)", #define ERR_SUBSCRIPT 9 "Subscript error", #define ERR_BADNUM 10 "Badly formed number", #define ERR_NOMORE 11 "No more words", #define ERR_FILENAME 12 "Missing file name", #define ERR_GLOB 13 "Internal glob error", #define ERR_COMMAND 14 "Command not found", #define ERR_TOOFEW 15 "Too few arguments", #define ERR_TOOMANY 16 "Too many arguments", #define ERR_DANGER 17 "Too dangerous to alias that", #define ERR_EMPTYIF 18 "Empty if", #define ERR_IMPRTHEN 19 "Improper then", #define ERR_NOPAREN 20 "Words not parenthesized", #define ERR_NOTFOUND 21 "%s not found", #define ERR_MASK 22 "Improper mask", #define ERR_LIMIT 23 "No such limit", #define ERR_TOOLARGE 24 "Argument too large", #define ERR_SCALEF 25 "Improper or unknown scale factor", #define ERR_UNDVAR 26 "Undefined variable", #define ERR_DEEP 27 "Directory stack not that deep", #define ERR_BADSIG 28 "Bad signal number", #define ERR_UNKSIG 29 "Unknown signal; kill -l lists signals", #define ERR_VARBEGIN 30 "Variable name must begin with a letter", #define ERR_VARTOOLONG 31 "Variable name too long", #define ERR_VARALNUM 32 "Variable name must contain alphanumeric characters", #define ERR_JOBCONTROL 33 "No job control in this shell", #define ERR_EXPRESSION 34 "Expression Syntax", #define ERR_NOHOMEDIR 35 "No home directory", #define ERR_CANTCHANGE 36 "Can't change to home directory", #define ERR_NULLCOM 37 "Invalid null command", #define ERR_ASSIGN 38 "Assignment missing expression", #define ERR_UNKNOWNOP 39 "Unknown operator", #define ERR_AMBIG 40 "Ambiguous", #define ERR_EXISTS 41 "%s: File exists", #define ERR_INTR 42 "Interrupted", #define ERR_RANGE 43 "Subscript out of range", #define ERR_OVERFLOW 44 "Line overflow", #define ERR_VARMOD 45 "Unknown variable modifier", #define ERR_NOSUCHJOB 46 "No such job", #define ERR_TERMINAL 47 "Can't from terminal", #define ERR_NOTWHILE 48 "Not in while/foreach", #define ERR_NOPROC 49 "No more processes", #define ERR_NOMATCH 50 "No match", #define ERR_MISSING 51 "Missing %c", #define ERR_UNMATCHED 52 "Unmatched %c", #define ERR_NOMEM 53 "Out of memory", #define ERR_PIPE 54 "Can't make pipe", #define ERR_SYSTEM 55 "%s: %s", #define ERR_STRING 56 "%s", #define ERR_JOBS 57 "Usage: jobs [ -l ]", #define ERR_JOBARGS 58 "Arguments should be jobs or process id's", #define ERR_JOBCUR 59 "No current job", #define ERR_JOBPREV 60 "No previous job", #define ERR_JOBPAT 61 "No job matches pattern", #define ERR_NESTING 62 "Fork nesting > %d; maybe `...` loop", #define ERR_JOBCTRLSUB 63 "No job control in subshells", #define ERR_BADPLPS 64 "Badly placed ()'s", #define ERR_STOPPED 65 "%sThere are suspended jobs", #define ERR_NODIR 66 "No other directory", #define ERR_EMPTY 67 "Directory stack empty", #define ERR_BADDIR 68 "Bad directory", #define ERR_DIRUS 69 "Usage: %s [-lvn]%s", #define ERR_HFLAG 70 "No operand for -h flag", #define ERR_NOTLOGIN 71 "Not a login shell", #define ERR_DIV0 72 "Division by 0", #define ERR_MOD0 73 "Mod by 0", #define ERR_BADSCALE 74 "Bad scaling; did you mean \"%s\"?", #define ERR_SUSPLOG 75 "Can't suspend a login shell (yet)", #define ERR_UNKUSER 76 "Unknown user: %s", #define ERR_NOHOME 77 "No $home variable set", #define ERR_HISTUS 78 "Usage: history [-rh] [# number of events]", #define ERR_SPDOLLT 79 "$, ! or < not allowed with $# or $?", #define ERR_NEWLINE 80 "Newline in variable name", #define ERR_SPSTAR 81 "* not allowed with $# or $?", #define ERR_DIGIT 82 "$?<digit> or $#<digit> not allowed", #define ERR_VARILL 83 "Illegal variable name", #define ERR_NLINDEX 84 "Newline in variable index", #define ERR_EXPOVFL 85 "Expansion buffer overflow", #define ERR_VARSYN 86 "Variable syntax", #define ERR_BADBANG 87 "Bad ! form", #define ERR_NOSUBST 88 "No previous substitute", #define ERR_BADSUBST 89 "Bad substitute", #define ERR_LHS 90 "No previous left hand side", #define ERR_RHSLONG 91 "Right hand side too long", #define ERR_BADBANGMOD 92 "Bad ! modifier: %c", #define ERR_MODFAIL 93 "Modifier failed", #define ERR_SUBOVFL 94 "Substitution buffer overflow", #define ERR_BADBANGARG 95 "Bad ! arg selector", #define ERR_NOSEARCH 96 "No prev search", #define ERR_NOEVENT 97 "%s: Event not found", #define ERR_TOOMANYRP 98 "Too many )'s", #define ERR_TOOMANYLP 99 "Too many ('s", #define ERR_BADPLP 100 "Badly placed (", #define ERR_MISRED 101 "Missing name for redirect", #define ERR_OUTRED 102 "Ambiguous output redirect", #define ERR_REDPAR 103 "Can't << within ()'s", #define ERR_INRED 104 "Ambiguous input redirect", #define ERR_ALIASLOOP 105 "Alias loop", #define ERR_HISTLOOP 106 "!# History loop", #define ERR_ARCH 107 "%s: %s. Wrong Architecture", #define ERR_FILEINQ 108 "Malformed file inquiry", #define ERR_SELOVFL 109 "Selector overflow", #define ERR_INVALID 110 "Invalid Error" }; /* * The parser and scanner set up errors for later by calling seterr, * which sets the variable err as a side effect; later to be tested, * e.g. in process. */ void #if __STDC__ seterror(int id, ...) #else seterror(id, va_alist) int id; va_dcl #endif { if (seterr == 0) { char berr[BUFSIZ]; va_list va; #if __STDC__ va_start(va, id); #else va_start(va); #endif if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) id = ERR_INVALID; vsprintf(berr, errorlist[id], va); va_end(va); seterr = strsave(berr); } } /* * Print the error with the given id. * * Special ids: * ERR_SILENT: Print nothing. * ERR_OLD: Print the previously set error if one was there. * otherwise return. * ERR_NAME: If this bit is set, print the name of the function * in bname * * This routine always resets or exits. The flag haderr * is set so the routine who catches the unwind can propogate * it if they want. * * Note that any open files at the point of error will eventually * be closed in the routine process in sh.c which is the only * place error unwinds are ever caught. */ void #if __STDC__ stderror(int id, ...) #else stderror(id, va_alist) int id; va_dcl #endif { va_list va; register Char **v; int flags = id & ERR_FLAGS; id &= ~ERR_FLAGS; if ((flags & ERR_OLD) && seterr == NULL) return; if (id < 0 || id > sizeof(errorlist) / sizeof(errorlist[0])) id = ERR_INVALID; (void) fflush(cshout); (void) fflush(csherr); haderr = 1; /* Now to diagnostic output */ timflg = 0; /* This isn't otherwise reset */ if (!(flags & ERR_SILENT)) { if (flags & ERR_NAME) (void) fprintf(csherr, "%s: ", bname); if ((flags & ERR_OLD)) /* Old error. */ (void) fprintf(csherr, "%s.\n", seterr); else { #if __STDC__ va_start(va, id); #else va_start(va); #endif (void) vfprintf(csherr, errorlist[id], va); va_end(va); (void) fprintf(csherr, ".\n"); } } if (seterr) { xfree((ptr_t) seterr); seterr = NULL; } if (v = pargv) pargv = 0, blkfree(v); if (v = gargv) gargv = 0, blkfree(v); (void) fflush(cshout); (void) fflush(csherr); didfds = 0; /* Forget about 0,1,2 */ /* * Go away if -e or we are a child shell */ if (exiterr || child) xexit(1); /* * Reset the state of the input. This buffered seek to end of file will * also clear the while/foreach stack. */ btoeof(); set(STRstatus, Strsave(STR1)); if (tpgrp > 0) (void) tcsetpgrp(FSHTTY, tpgrp); reset(); /* Unwind */ }