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- #!/usr/local/bin/gawk -f
- #!/usr/bin/awk -f
- # @(#) uujobs.gawk 1.3 97/01/06
- # uujobs: print relationships between uucp files.
- # 92/03/04 john@armory.com (John H. DuBois III)
- # 92/03/20 converted into #!awk script, changed output format
- # 92/09/20 Fixed to correctly print nonexistant referenced files;
- # when -u is given, print full filenames; added s option.
- # 92/09/25 Convince awk that RemoteEx is an array; added w option;
- # added address format conversion to -s option.
- # 92/10/26 Added j and d options.
- # 92/11/23 Display originator & remote cmd for X.* files.
- # 93/11/22 Added c, C, o, O, k, r, and i options.
- # 93/12/19 Major cleanup. Added printing of input file.
- # 94/03/09 Use gawk so - options can be given
-
- BEGIN {
- if ((ArgsLeft = DoOptions(ARGC,ARGV)) == -1)
- exit
-
- if (!u)
- Format = SetupFormat(S,ListDatafiles,IDonly)
-
- NumFiles = FindFiles(JobsGiven,ArgsLeft,ARGV,Files)
- ProcFilenames(Files,NumFiles,u,JobsGiven,ListDatafiles)
- }
-
- # Calls ProcNames once for each site, with the file names for that site.
- function ProcFilenames(Files,NumFiles,u,JobsGiven,ListDatafiles,
- i,Comp,Site,File,LastSite,C,D,X) {
- # Convince awk that X, D, and C are arrays so that (foo in [XDC])
- # can be used without error even if no files have been put in them.
- split("",C," ")
- split("",D," ")
- split("",X," ")
-
- for (i = 1; i <= NumFiles; i++) {
- split(Files[i],Comp,"/")
- Site = Comp[1]
- File = Comp[2]
- if (LastSite != "" && Site != LastSite) {
- ProcNames(C,D,X,LastSite,u,!JobsGiven,ListDatafiles)
- EmptyArr(C)
- EmptyArr(D)
- EmptyArr(X)
- }
- # Add filename to C[], D[], or X[]
- AddFileName(File,C,D,X)
- LastSite = Site
- }
- if (Site != "")
- ProcNames(C,D,X,Site,u,!JobsGiven,ListDatafiles)
- }
-
- # Find datafiles as specified
- function FindFiles(JobsGiven,ArgsLeft,ARGV,Files, Pattern,i,Cmd,LineNum) {
- if (JobsGiven) {
- Pattern = "*/D.*"
- for (i = 1; i <= ARGC; i++)
- if (i in ARGV)
- Pattern = Pattern " */[CX]." ARGV[i]
- }
- else if (ArgsLeft < 2) # If no sitenames given, check all sites
- Pattern = "*/[CDX].*"
- else
- for (i = 1; i <= ARGC; i++)
- if (i in ARGV)
- Pattern = Pattern ARGV[i] "/[CDX].* "
- Cmd = "cd /usr/spool/uucp; for file in " Pattern \
- "; do [ -f \"$file\" ] && echo $file; done 2>&1"
- LineNum = 0
- while (Cmd | getline)
- Files[++LineNum] = $0
- if (JobsGiven)
- qsortNumIndByValue(Files,1,LineNum)
- return LineNum
- }
-
- # Prints headers & returns printf format string for data lines
- function SetupFormat(S,ListDatafiles,IDonly, Format) {
- if (S) {
- Format = "%-12s %-8s %-29s %s"
- printf Format "\n","Job ID","Site","Originator","Remote command"
- }
- else if (ListDatafiles)
- Format = "%-12s %s"
- else if (!IDonly) {
- Format = "%-8s %-14s %-14s %s"
- printf Format "\n","Site","Originator","Remote command",""
- printf Format "\n","","Job","Input file","Other data files"
- }
- return Format
- }
-
- # Sets globals:
- # Width, CommandPat, NotCommandPat, OriginatorPat, NotOriginatorPat,
- # S, IDonly, u, Kill, Rejuvenate, ListDatafiles, JobsGiven
- function DoOptions(ARGC,ARGV, ArgsLeft) {
- ArgsLeft = ProcArgs(ARGC,ARGV,"dhijkrsuw:c:C:o:O:",Options)
- if (ArgsLeft == -1) {
- printf "Error: %s\n",OptErr | "cat 1>&2"
- close("cat 1>&2")
- return -1
- }
- if (Options["h"]) {
- Help()
- return -1
- }
- Width = Options["w"]
-
- # Ignore leading & trailing whitespace.
- if ("c" in Options)
- CommandPat = "^[ \t]*" Options["c"] "[ \t]*$"
- if ("C" in Options)
- NotCommandPat = "^[ \t]*" Options["C"] "[ \t]*$"
- if ("o" in Options)
- OriginatorPat = "^[ \t]*" Options["o"] "[ \t]*$"
- if ("O" in Options)
- NotOriginatorPat = "^[ \t]*" Options["O"] "[ \t]*$"
- S = Options["s"]
- IDonly = Options["i"]
- if (IDonly && Width) {
- printf "Error: do not use the 'w' option with the 'i' option.\n" \
- | "cat 1>&2"
- return -1
- }
- u = Options["u"]
- Kill = Options["k"]
- Rejuvenate = Options["r"]
- ListDatafiles = Options["d"]
- JobsGiven = Options["j"]
- return ArgsLeft
- }
-
- function Help() {
- print \
- "uujobs: print uucp jobs.\n" \
- "Usage: uujobs [-dhikrsu] [-w<width>] [-[cC]<command>] [-[oO]<originator>]\n"\
- " [sitename ...|-j<job-ID> ...]\n" \
- "For each job, the site, originator, command, and filenames are printed.\n" \
- "For rmail jobs, the sender of the mail is printed as the originator.\n" \
- "For other jobs, the job owner listed in the command file is printed.\n" \
- "If site names are given, only the jobs waiting for them are processed.\n" \
- "If no site names are given, all waiting uucp jobs are processed.\n" \
- "Options:\n" \
- "-c: Output is limited to jobs containing a particular remote command.\n"\
- " <command> can be a pattern in the style of egrep(C). The entire path\n"\
- " and arguments of a command must match it. To match regardless of\n"\
- " arguments, end the pattern with '.*' (e.g.: -c'rmail .*').\n"\
- "-C: All jobs except those containing a matching command are printed.\n"\
- "-d: For each job, list the job ID followed by the data files it references.\n"\
- "-h: Print this help.\n" \
- "-i: List job IDs only, one per line, with no header.\n" \
- "-j: List only the jobs whose job IDs are given on the command line.\n" \
- "-k, -r: kill or rejuvenate the listed jobs with uustat(C).\n"\
- "-o, -O: like -c and -C, except for the originator of a job.\n"\
- "-u: List only unreferenced files and files that reference noexistant files.\n"\
- "-s: Short form: list job ID, site, originator, and command on a single\n"\
- " line; paths are shortened and converted to domain format if possible.\n" \
- "-w: Truncate displayed lines to at most <width> characters.\n" \
- " The header is not truncated."
- }
-
- function EmptyArr(A, name) {
- for (name in A)
- delete A[name]
- }
-
- # Makes File an element of set C, D, or X depending on what letter it
- # starts with. For C and X files, the leading C. or X. is removed.
- function AddFileName(File,C,D,X) {
- if (File ~ "^C")
- C[substr(File,3)]
- else if (File ~ "^D")
- D[File]
- else if (File ~ "^X")
- X[substr(File,3)]
- else
- printf "File \"%s\" ignored.\n",File | "cat 1>&2"
- }
-
- # ProcNames is called once for each site, with C[], D[], and X[] being
- # the names of the outgoing-command job IDs, job-data files, and
- # incoming-execute job IDs waiting for for processing for that site.
- # The existance of a particular job ID indicates the existance of a
- # C.job-ID or X.job-ID file.
- # Site is the site they belong to.
- # u is true if only unreferenced files should be printed.
- # PrintUnref is true if warnings about unreferenced files should be printed.
- # ListDatafiles is true if a per-job datafile list should be printed.
- function ProcNames(C,D,X,Site,u,PrintUnref,ListDatafiles,
- Job2Cmd,RemoteEx,dir,file,ret,DataF2Job,SourceFile,DestFile,DataFile,
- Sender,O,Job,Job2DataF,F) {
- # DataF2Job[] gives the job ID that owns each data file.
- split("",DataF2Job)
- # The indices of RemoteEx[] will be made the names of datafiles that
- # will be execute files on the remote system.
- split("",RemoteEx)
- split("",O)
- dir = "/usr/spool/uucp/" Site "/"
-
- # Read all command files
- for (Job in C)
- ReadCmdFile(Job,dir,DataF2Job,Job2DataF,RemoteEx,O)
-
- split("",Job2Cmd)
- # Set DataF2Job and Job2Cmd for execute (X) files
- ReadXFiles(X,"X",Site,I,DataF2Job,Job2Cmd,O)
- # Read the remote execute files to find what the remote commands are
- # and what the input files to those commands will be
- ReadXFiles(RemoteEx,"D",Site,I,DataF2Job,Job2Cmd,O)
-
- FindUnref(DataF2Job,D,u,PrintUnref)
- if (!u) {
- PrintLines(Job2DataF,I,O,Site,Job2Cmd,ListDatafiles)
- split("",Job2DataF)
- PrintLines(X,I,O,Site,Job2Cmd,ListDatafiles)
- }
- }
-
- # Find unreferenced data files.
- function FindUnref(DataF2Job,D,u,PrintUnref, file) {
- for (file in DataF2Job) {
- if (file in D)
- delete D[file]
- else {
- if (u)
- print dir DataF2Job[file]
- else
- printf "%s references nonexistant file %s.\n", \
- DataF2Job[file],file | "cat 1>&2"
- }
- }
- for (file in D) {
- if (u)
- print dir file
- else if (PrintUnref)
- printf "%s not referenced.\n",file | "cat 1>&2"
- }
- }
-
- # Read the command file for the specified job.
- # For each filename specified to be sent to the remote system,
- # set DataF2Job[filename] to the ID of this job.
- # Make the value of Job2DataF[Job] be a space-separated list of all of the
- # data files is uses.
- # If the datafile will be an execute (X.*) file after being transferred,
- # store the local name of the file in RemoteEx[] with the index being the
- # ID the job will have after transfer.
- # Set O[Job] to the originator of the job.
- function ReadCmdFile(Job,dir,DataF2Job,Job2DataF,RemoteEx,O,
- filename,ret,SourceFile,DestFile,Sender,DataFile) {
- # Lines in command files are of the form:
- # type sourcefile destfile sender options data mode notify
- # type will be one of:
- # S Send a file from local to a remote system
- # R Copy a file from remote system to local system
- # X Send an execution request to a remote system
-
- # For each command file, read the lines in it.
- # For S (Send file) lines, make sure that referenced sourcefiles exist,
- # add them to referenced set, & set C[cmdfile] to the files it references
- filename = dir "C." Job
- while ((ret = (getline < filename)) == 1) {
- if ($1 != "S")
- continue
- SourceFile = $2
- DestFile = $3
- Sender = $4
- DataFile = $6
- DataF2Job[SourceFile] = Job
- if (DestFile ~ /^X\./)
- RemoteEx[substr(DestFile,3)] = SourceFile
- # sourcefile is generally the same as datafile but not always
- if (SourceFile == DataFile)
- Job2DataF[Job] = Job2DataF[Job] SourceFile " "
- else {
- Job2DataF[Job] = Job2DataF[Job] SourceFile " " DataFile " "
- DataF2Job[DataFile] = Job
- }
- if (!(Job in O) && Sender != "")
- O[Job] = Sender
- }
- close(filename)
- if (ret)
- printf "Read from command file \"%s\" failed.\n",filename | "cat 1>&2"
- }
-
- # Read the contents of execute files (D.* on the originating system,
- # X.* on destination system).
- # X[] is passed with indices set to job IDs. If the index has a non-null
- # value, it is the local name of the file that will be the execute file
- # on the remote end.
- # For each job in X[], X[job] is set to a space-separated list of any local
- # files it references.
- # The name of each local file referenced is also made an index of DataF2Job[].
- # The command for each execute file is put in Job2Cmd[job].
- # The name of the standard input file for the remote command is put in I[job].
- # Site should be the site that the files in X[] belong to.
- # Prefix is the file prefix, which with the job determine the filename.
- # For execute files that have been transferred from a remote system and
- # will be processed on this system, the prefix is X; for execute files
- # that wwere generated on this system & are currently datafiles waiting to
- # be transferred to the remote system, the prefix is D.
- # The requestor of the job (from the U line) is put in O[job].
- function ReadXFiles(X,Prefix,Site,I,DataF2Job,Job2Cmd,O,
- filename,PathPref,ret,Job) {
- PathPref = "/usr/spool/uucp/" Site "/"
- for (Job in X) {
- # I gives the file to be used for standard input.
- # F names a file to be transferred.
- # C gives command to be executed.
- if (X[Job] != "")
- filename = PathPref X[Job]
- else
- filename = PathPref Prefix "." Job
- while ((ret = (getline < filename)) == 1) {
- if (($1 == "I") || ($1 == "F")) {
- if ($1 == "I") {
- I[Job] = $2
- }
- X[Job] = X[Job] $2 " "
- DataF2Job[$2] = Job
- }
- else if ($1 == "C")
- Job2Cmd[Job] = substr($0,3)
- else if ($1 == "U" && !(Job in O))
- O[Job] = $2
- }
- close(filename)
- if (ret)
- printf \
- "Read from execute file \"%s\" failed.\n",filename | "cat 1>&2"
- }
- }
-
- # Print info on jobs
- # Job2DataF[job] gives space-separated lists of data files referenced jobs
- # I[job] gives the input file for each job
- # O[job] gives the originator of each job
- # Site is the site these jobs are for
- # Job2Cmd[job] gives the remote command that a job will run, if any
- # ListDatafiles is true if the output should just be a list of datafiles
- # referenced by each job
- function PrintLines(Job2DataF,I,O,Site,Job2Cmd,ListDatafiles,
- DataFiles,file,InputFile,Command,Originator,Job,i,Files) {
- for (Job in Job2DataF) {
- Command = Job2Cmd[Job]
- InputFile = I[Job]
- DataFiles = ""
- split(Job2DataF[Job],Files)
- for (i in Files) {
- file = Files[i]
- if (file != InputFile)
- DataFiles = DataFiles file " "
- }
-
- # for X.* DataFiles
- if (Command == "" && "X." Job in Job2Cmd) {
- Command = Job2Cmd["X." Job]
- }
-
- # Restrict jobs displayed to those that match pattern.
- if (CommandPat != "" && Command !~ CommandPat)
- continue
- if (NotCommandPat != "" && Command ~ NotCommandPat)
- continue
-
- # This is lame but mmdf makes the UUCP originator of
- # mail always be mmdf
- if (Command ~ "^rmail ") {
- if ((getline < InputFile) == 1 && $1 == "From")
- Originator = $2
- else {
- Originator = "?"
- }
- close(InputFile)
- }
- else if (Job in O)
- Originator = O[Job]
- else
- Originator = "-"
-
- # More restriction
- if (OriginatorPat != "" && Originator !~ OriginatorPat)
- continue
- if (NotOriginatorPat != "" && (Originator ~ NotOriginatorPat))
- continue
-
- if (S) {
- Originator = To_Dom(Originator)
- if (Width)
- print substr(\
- sprintf(Format,Job,Site,Originator,Command),1,Width)
- else
- printf Format "\n",Job,Site,Originator,Command
- }
- else if (ListDatafiles)
- if (Width)
- print substr(\
- sprintf(Format "\n",Job,Job2DataF[Job]),1,Width)
- else
- printf(Format "\n",Job,Job2DataF[Job])
- else if (IDonly)
- print Job
- else
- # "Site","Originator","Remote command"
- # "","Master Job","Input Job","Other data DataFiles"
- if (Width) {
- print substr(sprintf(Format,Site,Originator,Command,""),1,Width)
- print \
- substr(sprintf(Format,"",Job,InputFile,DataFiles),1,Width)
- }
- else {
- printf Format "\n",Site,Originator,Command,""
- printf Format "\n","",Job,InputFile,DataFiles
- }
- if (Kill)
- system("uustat -k" Job)
- if (Rejuvenate)
- system("uustat -r" Job)
- }
- }
-
- # Convert uucp-format address Addr to domain format, if possible
- # If there are no site names, the user name is returned.
- # Otherwise, components of the path up to a component that looks like a domain
- # name are discarded.
- # If there is only one site name, user@sitename is returned.
- # If more than one, site!site!...!user is returned.
- function To_Dom(Addr, Comp,NumComp,User,Path) {
- if (Addr ~ ":@%") # Not handled by this function
- return Addr
- # Find a suffix of the address that contains a site name that
- # includes a '.', assumed to be a full domain name
- # [^!]+\\.[^!]+ Domain-type site name
- # ! Path separator
- # ([^.]+!)? Optional non-domain-type site names
- # [^!]+$ User name
- if (match(Addr,"[^!]+\\.[^!]+!([^.]+!)?[^!]+$"))
- Addr = substr(Addr,RSTART)
- NumComp = split(Addr,Comp,"!")
- User = Comp[NumComp--]
- if (!NumComp)
- return User
- Path = Comp[NumComp--]
- if (!NumComp)
- return User "@" Path
- return Addr
- }
-
- ### Start of ProcArgs library
- # @(#) ProcArgs 1.11 96/12/08
- # 92/02/29 john h. dubois iii (john@armory.com)
- # 93/07/18 Added "#" arg type
- # 93/09/26 Do not count -h against MinArgs
- # 94/01/01 Stop scanning at first non-option arg. Added ">" option type.
- # Removed meaning of "+" or "-" by itself.
- # 94/03/08 Added & option and *()< option types.
- # 94/04/02 Added NoRCopt to Opts()
- # 94/06/11 Mark numeric variables as such.
- # 94/07/08 Opts(): Do not require any args if h option is given.
- # 95/01/22 Record options given more than once. Record option num in argv.
- # 95/06/08 Added ExclusiveOptions().
- # 96/01/20 Let rcfiles be a colon-separated list of filenames.
- # Expand $VARNAME at the start of its filenames.
- # Let varname=0 and -option- turn off an option.
- # 96/05/05 Changed meaning of 7th arg to Opts; now can specify exactly how many
- # of the vars should be searched for in the environment.
- # Check for duplicate rcfiles.
- # 96/05/13 Return more specific error values. Note: ProcArgs() and InitOpts()
- # now return various negatives values on error, not just -1, and
- # Opts() may set Err to various positive values, not just 1.
- # Added AllowUnrecOpt.
- # 96/05/23 Check type given for & option
- # 96/06/15 Re-port to awk
- # 96/10/01 Moved file-reading code into ReadConfFile(), so that it can be
- # used by other functions.
- # 96/10/15 Added OptChars
- # 96/11/01 Added exOpts arg to Opts()
- # 96/11/16 Added ; type
- # 96/12/08 Added Opt2Set() & Opt2Sets()
- # 96/12/27 Added CmdLineOpt()
-
- # optlist is a string which contains all of the possible command line options.
- # A character followed by certain characters indicates that the option takes
- # an argument, with type as follows:
- # : String argument
- # ; Non-empty string argument
- # * Floating point argument
- # ( Non-negative floating point argument
- # ) Positive floating point argument
- # # Integer argument
- # < Non-negative integer argument
- # > Positive integer argument
- # The only difference the type of argument makes is in the runtime argument
- # error checking that is done.
-
- # The & option is a special case used to get numeric options without the
- # user having to give an option character. It is shorthand for [-+.0-9].
- # If & is included in optlist and an option string that begins with one of
- # these characters is seen, the value given to "&" will include the first
- # char of the option. & must be followed by a type character other than ":"
- # or ";".
- # Note that if e.g. &> is given, an option of -.5 will produce an error.
-
- # Strings in argv[] which begin with "-" or "+" are taken to be
- # strings of options, except that a string which consists solely of "-"
- # or "+" is taken to be a non-option string; like other non-option strings,
- # it stops the scanning of argv and is left in argv[].
- # An argument of "--" or "++" also stops the scanning of argv[] but is removed.
- # If an option takes an argument, the argument may either immediately
- # follow it or be given separately.
- # "-" and "+" options are treated the same. "+" is allowed because most awks
- # take any -options to be arguments to themselves. gawk 2.15 was enhanced to
- # stop scanning when it encounters an unrecognized option, though until 2.15.5
- # this feature had a flaw that caused problems in some cases. See the OptChars
- # parameter to explicitly set the option-specifier characters.
-
- # If an option that does not take an argument is given,
- # an index with its name is created in Options and its value is set to the
- # number of times it occurs in argv[].
-
- # If an option that does take an argument is given, an index with its name is
- # created in Options and its value is set to the value of the argument given
- # for it, and Options[option-name,"count"] is (initially) set to the 1.
- # If an option that takes an argument is given more than once,
- # Options[option-name,"count"] is incremented, and the value is assigned to
- # the index (option-name,instance) where instance is 2 for the second occurance
- # of the option, etc.
- # In other words, the first time an option with a value is encountered, the
- # value is assigned to an index consisting only of its name; for any further
- # occurances of the option, the value index has an extra (count) dimension.
-
- # The sequence number for each option found in argv[] is stored in
- # Options[option-name,"num",instance], where instance is 1 for the first
- # occurance of the option, etc. The sequence number starts at 1 and is
- # incremented for each option, both those that have a value and those that
- # do not. Options set from a config file have a value of 0 assigned to this.
-
- # Options and their arguments are deleted from argv.
- # Note that this means that there may be gaps left in the indices of argv[].
- # If compress is nonzero, argv[] is packed by moving its elements so that
- # they have contiguous integer indices starting with 0.
- # Option processing will stop with the first unrecognized option, just as
- # though -- was given except that unlike -- the unrecognized option will not be
- # removed from ARGV[]. Normally, an error value is returned in this case.
- # If AllowUnrecOpt is true, it is not an error for an unrecognized option to
- # be found, so the number of remaining arguments is returned instead.
- # If OptChars is not a null string, it is the set of characters that indicate
- # that an argument is an option string if the string begins with one of the
- # characters. A string consisting solely of two of the same option-indicator
- # characters stops the scanning of argv[]. The default is "-+".
- # argv[0] is not examined.
- # The number of arguments left in argc is returned.
- # If an error occurs, the global string OptErr is set to an error message
- # and a negative value is returned.
- # Current error values:
- # -1: option that required an argument did not get it.
- # -2: argument of incorrect type supplied for an option.
- # -3: unrecognized (invalid) option.
- function ProcArgs(argc,argv,OptList,Options,compress,AllowUnrecOpt,OptChars,
- ArgNum,ArgsLeft,Arg,ArgLen,ArgInd,Option,Pos,NumOpt,Value,HadValue,specGiven,
- NeedNextOpt,GotValue,OptionNum,Escape,dest,src,count,c,OptTerm,OptCharSet)
- {
- # ArgNum is the index of the argument being processed.
- # ArgsLeft is the number of arguments left in argv.
- # Arg is the argument being processed.
- # ArgLen is the length of the argument being processed.
- # ArgInd is the position of the character in Arg being processed.
- # Option is the character in Arg being processed.
- # Pos is the position in OptList of the option being processed.
- # NumOpt is true if a numeric option may be given.
- ArgsLeft = argc
- NumOpt = index(OptList,"&")
- OptionNum = 0
- if (OptChars == "")
- OptChars = "-+"
- while (OptChars != "") {
- c = substr(OptChars,1,1)
- OptChars = substr(OptChars,2)
- OptCharSet[c]
- OptTerm[c c]
- }
- for (ArgNum = 1; ArgNum < argc; ArgNum++) {
- Arg = argv[ArgNum]
- if (length(Arg) < 2 || !((specGiven = substr(Arg,1,1)) in OptCharSet))
- break # Not an option; quit
- if (Arg in OptTerm) {
- delete argv[ArgNum]
- ArgsLeft--
- break
- }
- ArgLen = length(Arg)
- for (ArgInd = 2; ArgInd <= ArgLen; ArgInd++) {
- Option = substr(Arg,ArgInd,1)
- if (NumOpt && Option ~ /[-+.0-9]/) {
- # If this option is a numeric option, make its flag be & and
- # its option string flag position be the position of & in
- # the option string.
- Option = "&"
- Pos = NumOpt
- # Prefix Arg with a char so that ArgInd will point to the
- # first char of the numeric option.
- Arg = "&" Arg
- ArgLen++
- }
- # Find position of flag in option string, to get its type (if any).
- # Disallow & as literal flag.
- else if (!(Pos = index(OptList,Option)) || Option == "&") {
- if (AllowUnrecOpt) {
- Escape = 1
- break
- }
- else {
- OptErr = "Invalid option: " specGiven Option
- return -3
- }
- }
-
- # Find what the value of the option will be if it takes one.
- # NeedNextOpt is true if the option specifier is the last char of
- # this arg, which means that if the option requires a value it is
- # the next arg.
- if (NeedNextOpt = (ArgInd >= ArgLen)) { # Value is the next arg
- if (GotValue = ArgNum + 1 < argc)
- Value = argv[ArgNum+1]
- }
- else { # Value is included with option
- Value = substr(Arg,ArgInd + 1)
- GotValue = 1
- }
-
- if (HadValue = AssignVal(Option,Value,Options,
- substr(OptList,Pos + 1,1),GotValue,"",++OptionNum,!NeedNextOpt,
- specGiven)) {
- if (HadValue < 0) # error occured
- return HadValue
- if (HadValue == 2)
- ArgInd++ # Account for the single-char value we used.
- else {
- if (NeedNextOpt) { # option took next arg as value
- delete argv[++ArgNum]
- ArgsLeft--
- }
- break # This option has been used up
- }
- }
- }
- if (Escape)
- break
- # Do not delete arg until after processing of it, so that if it is not
- # recognized it can be left in ARGV[].
- delete argv[ArgNum]
- ArgsLeft--
- }
- if (compress != 0) {
- dest = 1
- src = argc - ArgsLeft + 1
- for (count = ArgsLeft - 1; count; count--) {
- ARGV[dest] = ARGV[src]
- dest++
- src++
- }
- }
- return ArgsLeft
- }
-
- # Assignment to values in Options[] occurs only in this function.
- # Option: Option specifier character.
- # Value: Value to be assigned to option, if it takes a value.
- # Options[]: Options array to return values in.
- # ArgType: Argument type specifier character.
- # GotValue: Whether any value is available to be assigned to this option.
- # Name: Name of option being processed.
- # OptionNum: Number of this option (starting with 1) if set in argv[],
- # or 0 if it was given in a config file or in the environment.
- # SingleOpt: true if the value (if any) that is available for this option was
- # given as part of the same command line arg as the option. Used only for
- # options from the command line.
- # specGiven is the option specifier character use, if any (e.g. - or +),
- # for use in error messages.
- # Global variables: OptErr
- # Return value: negative value on error, 0 if option did not require an
- # argument, 1 if it did & used the whole arg, 2 if it required just one char of
- # the arg.
- # Current error values:
- # -1: Option that required an argument did not get it.
- # -2: Value of incorrect type supplied for option.
- # -3: Bad type given for option &
- function AssignVal(Option,Value,Options,ArgType,GotValue,Name,OptionNum,
- SingleOpt,specGiven, UsedValue,Err,NumTypes) {
- # If option takes a value... [
- NumTypes = "*()#<>]"
- if (Option == "&" && ArgType !~ "[" NumTypes) { # ]
- OptErr = "Bad type given for & option"
- return -3
- }
-
- if (UsedValue = (ArgType ~ "[:;" NumTypes)) { # ]
- if (!GotValue) {
- if (Name != "")
- OptErr = "Variable requires a value -- " Name
- else
- OptErr = "option requires an argument -- " Option
- return -1
- }
- if ((Err = CheckType(ArgType,Value,Option,Name,specGiven)) != "") {
- OptErr = Err
- return -2
- }
- # Mark this as a numeric variable; will be propogated to Options[] val.
- if (ArgType != ":" && ArgType != ";")
- Value += 0
- if ((Instance = ++Options[Option,"count"]) > 1)
- Options[Option,Instance] = Value
- else
- Options[Option] = Value
- }
- # If this is an environ or rcfile assignment & it was given a value...
- else if (!OptionNum && Value != "") {
- UsedValue = 1
- # If the value is "0" or "-" and this is the first instance of it,
- # do not set Options[Option]; this allows an assignment in an rcfile to
- # turn off an option (for the simple "Option in Options" test) in such
- # a way that it cannot be turned on in a later file.
- if (!(Option in Options) && (Value == "0" || Value == "-"))
- Instance = 1
- else
- Instance = ++Options[Option]
- # Save the value even though this is a flag
- Options[Option,Instance] = Value
- }
- # If this is a command line flag and has a - following it in the same arg,
- # it is being turned off.
- else if (OptionNum && SingleOpt && substr(Value,1,1) == "-") {
- UsedValue = 2
- if (Option in Options)
- Instance = ++Options[Option]
- else
- Instance = 1
- Options[Option,Instance]
- }
- # If this is a flag assignment without a value, increment the count for the
- # flag unless it was turned off. The indicator for a flag being turned off
- # is that the flag index has not been set in Options[] but it has an
- # instance count.
- else if (Option in Options || !((Option,1) in Options))
- # Increment number of times this flag seen; will inc null value to 1
- Instance = ++Options[Option]
- Options[Option,"num",Instance] = OptionNum
- return UsedValue
- }
-
- # Option is the option letter
- # Value is the value being assigned
- # Name is the var name of the option, if any
- # ArgType is one of:
- # : String argument
- # ; Non-null string argument
- # * Floating point argument
- # ( Non-negative floating point argument
- # ) Positive floating point argument
- # # Integer argument
- # < Non-negative integer argument
- # > Positive integer argument
- # specGiven is the option specifier character use, if any (e.g. - or +),
- # for use in error messages.
- # Returns null on success, err string on error
- function CheckType(ArgType,Value,Option,Name,specGiven, Err,ErrStr) {
- if (ArgType == ":")
- return ""
- if (ArgType == ";") {
- if (Value == "")
- Err = "must be a non-empty string"
- }
- # A number begins with optional + or -, and is followed by a string of
- # digits or a decimal with digits before it, after it, or both
- else if (Value !~ /^[-+]?([0-9]+|[0-9]*\.[0-9]+|[0-9]+\.)$/)
- Err = "must be a number"
- else if (ArgType ~ "[#<>]" && Value ~ /\./)
- Err = "may not include a fraction"
- else if (ArgType ~ "[()<>]" && Value < 0)
- Err = "may not be negative"
- # (
- else if (ArgType ~ "[)>]" && Value == 0)
- Err = "must be a positive number"
- if (Err != "") {
- ErrStr = "Bad value \"" Value "\". Value assigned to "
- if (Name != "")
- return ErrStr "variable " substr(Name,1,1) " " Err
- else {
- if (Option == "&")
- Option = Value
- return ErrStr "option " specGiven substr(Option,1,1) " " Err
- }
- }
- else
- return ""
- }
-
- # Note: only the above functions are needed by ProcArgs.
- # The rest of these functions call ProcArgs() and also do other
- # option-processing stuff.
-
- # Opts: Process command line arguments.
- # Opts processes command line arguments using ProcArgs()
- # and checks for errors. If an error occurs, a message is printed
- # and the program is exited.
- #
- # Input variables:
- # Name is the name of the program, for error messages.
- # Usage is a usage message, for error messages.
- # OptList the option description string, as used by ProcArgs().
- # MinArgs is the minimum number of non-option arguments that this
- # program should have, non including ARGV[0] and +h.
- # If the program does not require any non-option arguments,
- # MinArgs should be omitted or given as 0.
- # rcFiles, if given, is a colon-seprated list of filenames to read for
- # variable initialization. If a filename begins with ~/, the ~ is replaced
- # by the value of the environment variable HOME. If a filename begins with
- # $, the part from the character after the $ up until (but not including)
- # the first character not in [a-zA-Z0-9_] will be searched for in the
- # environment; if found its value will be substituted, if not the filename will
- # be discarded.
- # rcfiles are read in the order given.
- # Values given in them will not override values given on the command line,
- # and values given in later files will not override those set in earlier
- # files, because AssignVal() will store each with a different instance index.
- # The first instance of each variable, either on the command line or in an
- # rcfile, will be stored with no instance index, and this is the value
- # normally used by programs that call this function.
- # VarNames is a comma-separated list of variable names to map to options,
- # in the same order as the options are given in OptList.
- # If EnvSearch is given and nonzero, the first EnvSearch variables will also be
- # searched for in the environment. If set to -1, all values will be searched
- # for in the environment. Values given in the environment will override
- # those given in the rcfiles but not those given on the command line.
- # NoRCopt, if given, is an additional letter option that if given on the
- # command line prevents the rcfiles from being read.
- # See ProcArgs() for a description of AllowUnRecOpt and optChars, and
- # ExclusiveOptions() for a description of exOpts.
- # Special options:
- # If x is made an option and is given, some debugging info is output.
- # h is assumed to be the help option.
-
- # Global variables:
- # The command line arguments are taken from ARGV[].
- # The arguments that are option specifiers and values are removed from
- # ARGV[], leaving only ARGV[0] and the non-option arguments.
- # The number of elements in ARGV[] should be in ARGC.
- # After processing, ARGC is set to the number of elements left in ARGV[].
- # The option values are put in Options[].
- # On error, Err is set to a positive integer value so it can be checked for in
- # an END block.
- # Return value: The number of elements left in ARGV is returned.
- # Must keep OptErr global since it may be set by InitOpts().
- function Opts(Name,Usage,OptList,MinArgs,rcFiles,VarNames,EnvSearch,NoRCopt,
- AllowUnrecOpt,optChars,exOpts, ArgsLeft,e) {
- if (MinArgs == "")
- MinArgs = 0
- ArgsLeft = ProcArgs(ARGC,ARGV,OptList NoRCopt,Options,1,AllowUnrecOpt,
- optChars)
- if (ArgsLeft < (MinArgs+1) && !("h" in Options)) {
- if (ArgsLeft >= 0) {
- OptErr = "Not enough arguments"
- Err = 4
- }
- else
- Err = -ArgsLeft
- printf "%s: %s.\nUse -h for help.\n%s\n",
- Name,OptErr,Usage > "/dev/stderr"
- exit 1
- }
- if (rcFiles != "" && (NoRCopt == "" || !(NoRCopt in Options)) &&
- (e = InitOpts(rcFiles,Options,OptList,VarNames,EnvSearch)) < 0)
- {
- print Name ": " OptErr ".\nUse -h for help." > "/dev/stderr"
- Err = -e
- exit 1
- }
- if ((exOpts != "") && ((OptErr = ExclusiveOptions(exOpts,Options)) != ""))
- {
- printf "%s: Error: %s\n",Name,OptErr > "/dev/stderr"
- Err = 1
- exit 1
- }
- return ArgsLeft
- }
-
- # ReadConfFile(): Read a file containing var/value assignments, in the form
- # <variable-name><assignment-char><value>.
- # Whitespace (spaces and tabs) around a variable (leading whitespace on the
- # line and whitespace between the variable name and the assignment character)
- # is stripped. Lines that do not contain an assignment operator or which
- # contain a null variable name are ignored, other than possibly being noted in
- # the return value. If more than one assignment is made to a variable, the
- # first assignment is used.
- # Input variables:
- # File is the file to read.
- # Comment is the line-comment character. If it is found as the first non-
- # whitespace character on a line, the line is ignored.
- # Assign is the assignment string. The first instance of Assign on a line
- # separates the variable name from its value.
- # If StripWhite is true, whitespace around the value (whitespace between the
- # assignment char and trailing whitespace on the line) is stripped.
- # VarPat is a pattern that variable names must match.
- # Example: "^[a-zA-Z][a-zA-Z0-9]+$"
- # If FlagsOK is true, variables are allowed to be "set" by being put alone on
- # a line; no assignment operator is needed. These variables are set in
- # the output array with a null value. Lines containing nothing but
- # whitespace are still ignored.
- # Output variables:
- # Values[] contains the assignments, with the indexes being the variable names
- # and the values being the assigned values.
- # Lines[] contains the line number that each variable occured on. A flag set
- # is record by giving it an index in Lines[] but not in Values[].
- # Return value:
- # If any errors occur, a string consisting of descriptions of the errors
- # separated by newlines is returned. In no case will the string start with a
- # numeric value. If no errors occur, the number of lines read is returned.
- function ReadConfigFile(Values,Lines,File,Comment,Assign,StripWhite,VarPat,
- FlagsOK,
- Line,Status,Errs,AssignLen,LineNum,Var,Val) {
- if (Comment != "")
- Comment = "^" Comment
- AssignLen = length(Assign)
- if (VarPat == "")
- VarPat = "." # null varname not allowed
- while ((Status = (getline Line < File)) == 1) {
- LineNum++
- sub("^[ \t]+","",Line)
- if (Line == "") # blank line
- continue
- if (Comment != "" && Line ~ Comment)
- continue
- if (Pos = index(Line,Assign)) {
- Var = substr(Line,1,Pos-1)
- Val = substr(Line,Pos+AssignLen)
- if (StripWhite) {
- sub("^[ \t]+","",Val)
- sub("[ \t]+$","",Val)
- }
- }
- else {
- Var = Line # If no value, var is entire line
- Val = ""
- }
- if (!FlagsOK && Val == "") {
- Errs = Errs \
- sprintf("\nBad assignment on line %d of file %s: %s",
- LineNum,File,Line)
- continue
- }
- sub("[ \t]+$","",Var)
- if (Var !~ VarPat) {
- Errs = Errs sprintf("\nBad variable name on line %d of file %s: %s",
- LineNum,File,Var)
- continue
- }
- if (!(Var in Lines)) {
- Lines[Var] = LineNum
- if (Pos)
- Values[Var] = Val
- }
- }
- if (Status)
- Errs = Errs "\nCould not read file " File
- close(File)
- return Errs == "" ? LineNum : substr(Errs,2) # Skip first newline
- }
-
- # Variables:
- # Data is stored in Options[].
- # rcFiles, OptList, VarNames, and EnvSearch are as as described for Opts().
- # Global vars:
- # Sets OptErr. Uses ENVIRON[].
- # If anything is read from any of the rcfiles, sets READ_RCFILE to 1.
- function InitOpts(rcFiles,Options,OptList,VarNames,EnvSearch,
- Line,Var,Pos,Vars,Map,CharOpt,NumVars,TypesInd,Types,Type,Ret,i,rcFile,
- fNames,numrcFiles,filesRead,Err,Values,retStr) {
- split("",filesRead,"") # make awk know this is an array
- NumVars = split(VarNames,Vars,",")
- TypesInd = Ret = 0
- if (EnvSearch == -1)
- EnvSearch = NumVars
- for (i = 1; i <= NumVars; i++) {
- Var = Vars[i]
- CharOpt = substr(OptList,++TypesInd,1)
- if (CharOpt ~ "^[:;*()#<>&]$")
- CharOpt = substr(OptList,++TypesInd,1)
- Map[Var] = CharOpt
- Types[Var] = Type = substr(OptList,TypesInd+1,1)
- # Do not overwrite entries from environment
- if (i <= EnvSearch && Var in ENVIRON &&
- (Err = AssignVal(CharOpt,ENVIRON[Var],Options,Type,1,Var,0)) < 0)
- return Err
- }
-
- numrcFiles = split(rcFiles,fNames,":")
- for (i = 1; i <= numrcFiles; i++) {
- rcFile = fNames[i]
- if (rcFile ~ "^~/")
- rcFile = ENVIRON["HOME"] substr(rcFile,2)
- else if (rcFile ~ /^\$/) {
- rcFile = substr(rcFile,2)
- match(rcFile,"^[a-zA-Z0-9_]*")
- envvar = substr(rcFile,1,RLENGTH)
- if (envvar in ENVIRON)
- rcFile = ENVIRON[envvar] substr(rcFile,RLENGTH+1)
- else
- continue
- }
- if (rcFile in filesRead)
- continue
- # rcfiles are liable to be given more than once, e.g. UHOME and HOME
- # may be the same
- filesRead[rcFile]
- if ("x" in Options)
- printf "Reading configuration file %s\n",rcFile > "/dev/stderr"
- retStr = ReadConfigFile(Values,Lines,rcFile,"#","=",0,"",1)
- if (retStr > 0)
- READ_RCFILE = 1
- else if (ret != "") {
- OptErr = retStr
- Ret = -1
- }
- for (Var in Lines)
- if (Var in Map) {
- if ((Err = AssignVal(Map[Var],
- Var in Values ? Values[Var] : "",Options,Types[Var],
- Var in Values,Var,0)) < 0)
- return Err
- }
- else {
- OptErr = sprintf(\
- "Unknown var \"%s\" assigned to on line %d\nof file %s",Var,
- Lines[Var],rcFile)
- Ret = -1
- }
- }
-
- if ("x" in Options)
- for (Var in Map)
- if (Map[Var] in Options)
- printf "(%s) %s=%s\n",Map[Var],Var,Options[Map[Var]] > \
- "/dev/stderr"
- else
- printf "(%s) %s not set\n",Map[Var],Var > "/dev/stderr"
- return Ret
- }
-
- # OptSets is a semicolon-separated list of sets of option sets.
- # Within a list of option sets, the option sets are separated by commas. For
- # each set of sets, if any option in one of the sets is in Options[] AND any
- # option in one of the other sets is in Options[], an error string is returned.
- # If no conflicts are found, nothing is returned.
- # Example: if OptSets = "ab,def,g;i,j", an error will be returned due to
- # the exclusions presented by the first set of sets (ab,def,g) if:
- # (a or b is in Options[]) AND (d, e, or f is in Options[]) OR
- # (a or b is in Options[]) AND (g is in Options) OR
- # (d, e, or f is in Options[]) AND (g is in Options)
- # An error will be returned due to the exclusions presented by the second set
- # of sets (i,j) if: (i is in Options[]) AND (j is in Options[]).
- # todo: make options given on command line unset options given in config file
- # todo: that they conflict with.
- function ExclusiveOptions(OptSets,Options,
- Sets,SetSet,NumSets,Pos1,Pos2,Len,s1,s2,c1,c2,ErrStr,L1,L2,SetSets,NumSetSets,
- SetNum,OSetNum) {
- NumSetSets = split(OptSets,SetSets,";")
- # For each set of sets...
- for (SetSet = 1; SetSet <= NumSetSets; SetSet++) {
- # NumSets is the number of sets in this set of sets.
- NumSets = split(SetSets[SetSet],Sets,",")
- # For each set in a set of sets except the last...
- for (SetNum = 1; SetNum < NumSets; SetNum++) {
- s1 = Sets[SetNum]
- L1 = length(s1)
- for (Pos1 = 1; Pos1 <= L1; Pos1++)
- # If any of the options in this set was given, check whether
- # any of the options in the other sets was given. Only check
- # later sets since earlier sets will have already been checked
- # against this set.
- if ((c1 = substr(s1,Pos1,1)) in Options)
- for (OSetNum = SetNum+1; OSetNum <= NumSets; OSetNum++) {
- s2 = Sets[OSetNum]
- L2 = length(s2)
- for (Pos2 = 1; Pos2 <= L2; Pos2++)
- if ((c2 = substr(s2,Pos2,1)) in Options)
- ErrStr = ErrStr "\n"\
- sprintf("Cannot give both %s and %s options.",
- c1,c2)
- }
- }
- }
- if (ErrStr != "")
- return substr(ErrStr,2)
- return ""
- }
-
- # The value of each instance of option Opt that occurs in Options[] is made an
- # index of Set[].
- # The return value is the number of instances of Opt in Options.
- function Opt2Set(Options,Opt,Set, count) {
- if (!(Opt in Options))
- return 0
- Set[Options[Opt]]
- count = Options[Opt,"count"]
- for (; count > 1; count--)
- Set[Options[Opt,count]]
- return count
- }
-
- # The value of each instance of option Opt that occurs in Options[] that
- # begins with "!" is made an index of nSet[] (with the ! stripped from it).
- # Other values are made indexes of Set[].
- # The return value is the number of instances of Opt in Options.
- function Opt2Sets(Options,Opt,Set,nSet, count,aSet,ret) {
- ret = Opt2Set(Options,Opt,aSet)
- for (value in aSet)
- if (substr(value,1,1) == "!")
- nSet[substr(value,2)]
- else
- Set[value]
- return ret
- }
-
- # Returns true if option Opt was given on the command line.
- function CmdLineOpt(Options,Opt, i) {
- for (i = 1; (Opt,"num",i) in Options; i++)
- if (Options[Opt,"num",i] != 0)
- return 1
- return 0
- }
- ### End of ProcArgs library
- ### Begin qsort routines
-
- # Arr[] is an array of values with arbitrary indices.
- # k[] is returned with numeric indices 1..n.
- # The values in k[] are the indices of Arr[],
- # ordered so that if Arr[] is stepped through
- # in the order Arr[k[1]] .. Arr[k[n]], it will be stepped
- # through in order of the values of its elements.
- # The return value is the number of elements in the arrays (n).
- function qsortArbIndByValue(Arr,k, ArrInd,ElNum) {
- ElNum = 0
- for (ArrInd in Arr)
- k[++ElNum] = ArrInd
- qsortSegment(Arr,k,1,ElNum)
- return ElNum
- }
-
- # Sort a segment of an array.
- # Arr[] contains data with arbitrary indices.
- # k[] has indices 1..nelem, with the indices of arr[] as values.
- # This function sorts the elements of arr that are pointed to by
- # k[start..end], swapping the values of elements of k[] so that
- # when this function returns arr[k[start..end]] will be in order.
- function qsortSegment(Arr,k,start,end, left,right,sepval,tmp,tmpe,tmps) {
- # handle two-element case explicitly for a tiny speedup
- if ((end - start) == 1) {
- if (Arr[tmps = k[start]] > Arr[tmpe = k[end]]) {
- k[start] = tmpe
- k[end] = tmps
- }
- return
- }
- # Make sure comparisons act on these as numbers
- left = start+0
- right = end+0
- sepval = Arr[k[int((left + right) / 2)]]
- # Make every element <= sepval be to the left of every element > sepval
- while (left < right) {
- while (Arr[k[left]] < sepval)
- left++
- while (Arr[k[right]] > sepval)
- right--
- if (left < right) {
- tmp = k[left]
- k[left++] = k[right]
- k[right--] = tmp
- }
- }
- if (left == right)
- if (Arr[k[left]] < sepval)
- left++
- else
- right--
- if (start < right)
- qsortSegment(Arr,k,start,right)
- if (left < end)
- qsortSegment(Arr,k,left,end)
- }
-
- # Arr[] is an array of values with arbitrary indices.
- # k[] is returned with numeric indices 1..n.
- # The values in k are the indices of Arr[],
- # ordered so that if Arr[] is stepped through
- # in the order Arr[k[1]] .. Arr[k[n]], it will be stepped
- # through in order of the values of its indices.
- # The return value is the number of elements in the arrays (n).
- # If the indexes are numeric, Numeric should be true, so that they can be
- # compared as such rather than as strings. Numeric indexes do not have to be
- # contiguous.
- function qsortByArbIndex(Arr,k,Numeric, ArrInd,ElNum) {
- ElNum = 0
- if (Numeric)
- # Indexes do not preserve numeric type, so must be forced
- for (ArrInd in Arr)
- k[++ElNum] = ArrInd+0
- else
- for (ArrInd in Arr)
- k[++ElNum] = ArrInd
- qsortNumIndByValue(k,1,ElNum)
- return ElNum
- }
-
- # Arr is an array of elements with contiguous numeric indexes to be sorted
- # by value.
- # start and end are the starting and ending indexes of the range to be sorted.
- function qsortNumIndByValue(Arr,start,end, left,right,sepval,tmp,tmpe,tmps) {
- # handle two-element case explicitly for a tiny speedup
- if ((start - end) == 1) {
- if ((tmps = Arr[start]) > (tmpe = Arr[end])) {
- Arr[start] = tmpe
- Arr[end] = tmps
- }
- return
- }
- left = start+0
- right = end+0
- sepval = Arr[int((left + right) / 2)]
- while (left < right) {
- while (Arr[left] < sepval)
- left++
- while (Arr[right] > sepval)
- right--
- if (left <= right) {
- tmp = Arr[left]
- Arr[left++] = Arr[right]
- Arr[right--] = tmp
- }
- }
- if (start < right)
- qsortNumIndByValue(Arr,start,right)
- if (left < end)
- qsortNumIndByValue(Arr,left,end)
- }
-
- ### End qsort routines
-