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- #!/usr/local/bin/gawk -f
- # hdminor: show meaning of hard drive device minor bits
- # @(#) hdminor.gawk 2.0 97/06/10
- # 90/12/28 john h. dubois iii
- # 91/02/25 added comments
- # 91/04/29 added help
- # 92/09/29 added devicename args, multiple command line args
- # 97/03/10 Allow extended minor numbers; deal with extended DOS partitions.
- # Still doesn't recognize extended minor #s when device name given.
- # 97/05/22 Added mt options.
- # 97/06/10 Was ksh script; rewrote in awk; added alt char graphics
-
- BEGIN {
- Name = "hdminor"
- Usage = "Usage: "Name " [-hMtT] <minor_num>|<device-name> ..."
- ARGC = Opts(Name,Usage,"hMtTx",1)
- Debug = "x" in Options
-
- if ("h" in Options) {
- printf \
- "%s: show meaning of hard drive minor numbers or device node names.\n"\
- "%s\n"\
- "If a minor number is given, the meaning of the physical drive, partition,\n"\
- "and division bit fields of the minor number will be printed. Numbers may\n"\
- "be given in ksh syntax (radix#value). If a device name is given, its\n"\
- "minor number is looked up and the fields are printed as above.\n"\
- "Options:\n"\
- "-h: Print this help.\n"\
- "-t: Verbose operation; show how the minor numbers are decomposed/converted.\n"\
- "-T: Like -t, but without using the display's alternate character set.\n"\
- "-M: Print an explanation of hd minor number meaning.\n",
- Name,Usage
- exit 0
- }
- if ("M" in Options) {
- print \
- "Minor number meaning:\n"\
- "Bits Meaning\n"\
- "76 Physical drive (0, 1, 2 or 3)\n"\
- "543 Virtual drive (partition)\n"\
- " 0 whole physical drive\n"\
- " (divvy partition bits ignored; should be 000)\n"\
- " 1,2,3,4 virtual drive 1, 2, 3, or 4\n"\
- " 5 active virtual drive\n"\
- " 6 DOS virtual drive\n"\
- " Divvy partition bits should be 111 (whole virtual drive)\n"\
- " 7 not used\n"\
- "210 Divvy partition (division) or DOS drive\n"\
- " For a divvied (UNIX) partition:\n"\
- " 0-6 Divvy partition 0-6\n"\
- " 7 whole virtual drive\n"\
- " For a DOS partition:\n"\
- " 0 Primary DOS partition; logical drive C:\n"\
- " 1-7 Extended DOS partitions; logical drives D:-J:"
- exit 0
- }
- Verbose = "t" in Options || "T" in Options
- noAlt = "T" in Options
- if (Verbose && !noAlt)
- noAlt = altInit(tinfo,"",1,AltMap)
-
- hdminor(ARGV[1])
- for (i = 2; i < ARGC; i++) {
- print ""
- hdminor(ARGV[i])
- }
- }
-
- function hdminor(s,
- minor,device,shprog,elem,Cmd,lout,pd,vd,division,v_pd,v_vd,v_div,Format) {
- if (s ~ /^([0-9]+|[1-9][0-9]*#[0-9a-zA-Z]+)$/) {
- minor = kshbase(s)
- if (minor > 65535) {
- print "Minor number must be in the range 0-65535!" > "/dev/stderr"
- return 0
- }
- }
- else if (s ~ "/")
- device = s
- else if (s ~ /[ \t]/)
- printf "Bad device name: %s\n",s > "/dev/stderr"
- else {
- shprog = sprintf("for d in %s dsk/%s rdsk/%s; do\nd=/dev/$d;"\
- "[ -c $d -o -b $d ] && { echo $d; exit 0; }; done",s,s,s)
- if (Debug)
- print "find command: " shprog > "/dev/stderr"
- shprog | getline device
- close(shprog)
- if (device == "") {
- printf "%s: %s: no such character or block device.\n",Name,s \
- > "/dev/stderr"
- return 0
- }
- }
-
- if (device != "") {
- Cmd = "exec ls -lon -- " device
- if (Debug)
- print "stat command: " Cmd > "/dev/stderr"
- Cmd | getline lout
- if (Debug)
- print "stat output:\n" lout > "/dev/stderr"
- close(Cmd)
- if (split(lout,elem,"[ ,]+") < 5)
- return 0 # presumably ls emitted an error message
- if (elem[1] !~ /^[bc]/) {
- printf "%s: Error: not a block or character device: %s",
- Name,device > "/dev/stderr"
- return 0
- }
- minor = elem[5]
- printf "Device %s (minor number %s):\n",device,minor
- }
- else
- printf "Minor number %s:\n",minor
-
- # divide up the bits
- pd = int(minor/64)
- vd = int(minor/8) % 8
- division = minor % 8
-
- v_pd = "Physical drive: " pd
-
- if (vd == 0) {
- v_vd="0 (none; whole physical drive)"
- if (division)
- print \
- "Divvy partition should be 0 when virtual drive is 0 (whole physical drive)!"
- }
- else if (vd <= 4)
- v_vd = vd
- else if (vd == 5)
- v_vd="5 (active)"
- else if (vd == 6)
- v_vd = "6 (DOS)"
- else if (vd == 7)
- v_vd = "7 - invalid virtual drive!"
- v_vd = "Virtual drive (partition): " v_vd
-
- if (vd == 6) {
- if (division == 0)
- v_div = "C: (primary DOS partition)"
- else
- v_div = sprintf("%c (extended DOS partition)",67+division)
- v_div = "DOS logical drive: " v_div
- }
- else {
- if (division == 7)
- v_div = "7 (whole division)"
- else
- v_div = division
- esac
- v_div = "Division (divvy partition): " v_div
- }
-
- if (Verbose) {
- printf \
- "%d = binary %s, octal %03o\n"\
- "%5s\n",minor,itoa(minor,2,8),minor,itoa(minor,8,3)
- doLine("|||","")
- doLine("||\\-->",v_div)
- doLine("|\\--->",v_vd)
- doLine("\\---->",v_pd)
- }
- else
- printf \
- "%s\n"\
- "%s\n"\
- "%s\n",v_pd,v_vd,v_div
- }
-
- function doLine(l,val, len,i,c) {
- printf " %s",_macs[1]
- if (noAlt)
- printf "%s",l
- else {
- len = length(l)
- for (i = 1; i <= len; i++) {
- c = substr(l,i,1)
- if (c == "|")
- printf "%s",AltMap["x"]
- else if (c == "\\")
- printf "%s",AltMap["m"]
- else if (c == "-")
- printf "%s",AltMap["q"]
- else if (c == ">")
- printf "%s",AltMap["+"]
- }
- }
- printf "%s%s\n",_macs[0],val
- }
-
- ### Start of ProcArgs library
- # @(#) ProcArgs 1.9 96/10/15
- # 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.
- # 94/09/23 Fixed bug that caused fail if -opt<value> given as last arg.
- # 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
-
- # 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
- # * 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 ":".
- # 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 bug that caused problems in some cases. See the OptChars
- # parameter to explicitely 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...
- # printf "option=<%s> value=<%s>\n",Option,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 != ":")
- 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
- # * 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 ""
- # 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
- 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.
- # 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.
-
- function Opts(Name,Usage,OptList,MinArgs,rcFiles,VarNames,EnvSearch,NoRCopt,
- AllowUnrecOpt,optChars, ArgsLeft,e) {
- if (MinArgs == "")
- MinArgs = 0
- ArgsLeft = ProcArgs(ARGC,ARGV,OptList NoRCopt,Options,1,AllowUnrecOpt,
- optChars)
- # if ((ArgsLeft + ("h" in Options)) < (MinArgs+1)) {
- if (ArgsLeft < (MinArgs+1) && !("h" in Options)) {
- if (ArgsLeft >= 0) {
- OptErr = "Not enough arguments"
- Err = 4
- }
- else
- Err = -ArgsLeft
- print Name ": " OptErr ".\nUse -h for help."
- print Usage
- exit 1
- }
- if (rcFiles != "" && (NoRCopt == "" || !(NoRCopt in Options)) &&
- (e = InitOpts(rcFiles,Options,OptList,VarNames,EnvSearch)) < 0)
- {
- print Name ": " OptErr ".\nUse -h for help."
- Err = -e
- 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[]).
- # if ((Err = ExclusiveOptions(OptSets,Options)) != "") {
- # printf "Error: %s\n",Err > "/dev/stderr"
- # Err = 1
- # exit(1)
- # }
-
- 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 ""
- }
-
- ### end of ProcArgs library
-
- ### Start of strtol library
- # @(#) strtol 1.0 96/03/01
- # 96/03/01 john h. dubois iii (john@armory.com)
-
- # Convert a value in base Base to an integer.
- function strtoi(S,Base, ret,len,i,conv,digit) {
- if (Base < 2 || Base > 36)
- return ""
- S = tolower(S)
- len = length(S)
- conv = substr("0123456789abcdefghijklmnopqrstuvwxyz",1,Base)
- for (i = 1; i <= len; i++) {
- if (!(digit = index(conv,substr(S,i,1))))
- return ""
- ret = ret * Base + digit - 1
- }
- return ret
- }
-
- # If Base is 1-36, S is taken to be a number in base Base.
- # If Base is 16, an initial 0x or 0X is ignored.
- # If Base is 0, an initial 0x or 0X causes Base to be set to 16; otherwise
- # Base is set to 10.
- # If S is empty or contains any characters not appropriate to a number in
- # base Base, a null string is returned. On success, an integer value is
- # returned.
- function strtol(S,Base) {
- Base += 0 # yes, this is neccessary
- if (Base < 0 || Base > 36)
- return ""
- if (Base == 0)
- if (S ~ /^0[xX]/) {
- Base = 16
- S = substr(S,3)
- }
- else
- Base = 10
- else if (Base == 16 && S ~ /^0[xX]/)
- S = substr(S,3)
- return strtoi(S,Base)
- }
-
- # Convert a value in ksh syntax to an integer.
- # If s has the form <base>#value, value is taken to be in base <base>.
- # Otherwise, it is taken to be a decimal value.
- function kshbase(S, elem) {
- if (split(S,elem,"#") == 2)
- return strtol(elem[2],elem[1])
- else
- return strtol(S)
- }
- ### End of strtol library
- ### start of ntoa lib
- # @(#) ntoa 1.0 94/01/01
- # Converts integer inval to string representation in base radix & returns it.
- # inval is taken to be a signed value; the result is preceded by a minus
- # sign if negative.
- # If numDig is nonzero, the result (before the minus sign, if any, is added)
- # is padded on the left with zeros to make it numDig digits long.
- # Then, either the minus sign or (if the result is positive) a space is added.
- # This means that the result will always be numDig+1 characters long.
- # If the result is longer than numDig before padding, it is left alone.
- # If numDig is zero, the leading space is not printed.
- # Null is returned on error.
- function itoa(inval,radix,numDig, Buf,value,neg,dig,Sign) {
-
- if (!(2 <= radix && radix <= 36))
- return ""
- if (neg = (inval < 0))
- value = -inval
- else
- value = inval
- if (value == 0)
- Buf = "0"
- while (value > 0) {
- if ((dig = value % radix) > 9)
- # Add digit value to 'a' - 10
- Buf = sprintf("%c",dig + 87) Buf
- else
- # Add digit value to '0'
- Buf = sprintf("%c",dig + 48) Buf
- value = int(value / radix)
- }
- if (neg)
- Sign "-"
- else if (numDig) # Do this before zeroing numDig
- Sign = " "
- if (numDig)
- for (numDig -= length(Buf); numDig > 0; numDig--)
- Buf = "0" Buf
- return Sign Buf
- }
-
- # ftoa: Convert a floating-point number to ASCII.
- # Converts inval to string representation in base radix & returns it.
- # inval is taken to be a signed value; the result is preceded by a minus
- # sign if negative.
- # fracDig is the number of digits in the output radix to print after the
- # decimal point.
- # If nDig is nonzero, the result (before the minus sign, if any, is added)
- # is padded on the left with zeros to make it nDig digits long.
- # Then, either the minus sign or (if the result is positive) a space is added.
- # This means that the result will always be nDig+1 characters long.
- # If the result is longer than nDig before padding, it is left alone.
- # Null is returned on error.
- function ftoa(inval,radix,nDig,fracDig,
- Buf,value,dig,intPart) {
-
- if (!(2 <= radix && radix <= 36))
- return ""
- intPart = int(inval)
- value = abs(inval - intPart)
- Buf = itoa(int(inval),radix,nDig ? nDig - fracDig - 1 : 0) "."
- for (; fracDig; fracDig--) {
- dig = int(value *= radix)
- # Add digit value to 'a' - 10 or to '0'
- Buf = Buf sprintf("%c",dig + (dig > 9 ? 87 : 48))
- value -= dig
- }
- return Buf
- }
- ### end of ntoa lib
- ### Start of tinfo lib
- # @(#) tinfo 1.0 96/11/30
- # altInit(): Get alternate character set terminfo capabilities.
- # term, noerror: see tiget().
- # tinfo: contains the acsc capability, and any of the enacs, smacs, and rmacs
- # capabilities that are defined for the terminal. Each is indexed by its
- # capability name. enacs is used to enable the alternate character set;
- # smacs starts it; rmacs ends it. acsc is the mapping of vt100 alternate
- # character codes to those appropriate for the given terminal.
- # AltMap is the acsc string broken down with each alternate character indexed
- # by its vt100 equivalent. num is an ordered list of the vt100 characters
- # indexed starting with 1, for applications that need to know what order they
- # were given in.
- # The global _macs[] is set up with _macs[0] = rmacs & _macs[1] = smacs, for
- # use by altPrint().
- # The alternate characters and their indexes (vt100 equivalents) are:
- # 0 solid square block a checker board f degree symbol
- # g plus/minus h board of squares j lower right corner
- # k upper right corner l upper left corner m lower left corner
- # n plus q horizontal line t left tee
- # u right tee v bottom tee w top tee
- # x vertical line + arrow pointing right . arrow pointing down
- # - arrow pointing up , arrow pointing left ` diamond
- # ~ bullet I lantern symbol o scan line 1
- # s scan line 9
- function altInit(tinfo,term,noerror,AltMap,num, ret,caplist,acsc,len,j,i) {
- if (ret = tiget("acsc",tinfo,term)) {
- # All other types of errors cause tput to print an informative message
- # to stderr, which is not redirected.
- if (!noerror && ret == 1)
- print "Terminal has no acsc capability." > "/dev/stderr"
- return ret
- }
- caplist = "enacs,smacs,rmacs"
- tiget(caplist,tinfo,term)
- acsc = tinfo["acsc"]
- len = length(acsc)
- j = 0
- for (i = 1; i < len; i += 2)
- AltMap[num[++j] = substr(acsc,i,1)] = substr(acsc,i+1,1)
- if ("rmacs" in tinfo)
- _macs[0] = tinfo["rmacs"]
- if ("smacs" in tinfo)
- _macs[1] = tinfo["smacs"]
- return 0
- }
-
- # altPrint: Print characters in either the alternate or standard character set.
- # string is the string to print.
- # alt should be 1 if string is in the alternate character set; 0 if in the
- # standard character set.
- # tinfo contains the smacs and rmacs strings, if needed.
- # altPrint keeps track of whether the terminal is in the standard or alternate
- # character set, and issues smacs and rmacs as needed.
- # It should always be called with alt false at the end of program execution to
- # ensure that the terminal is left in the standard character set.
- # Globals: The character set is tracked in _altPrintSet
- function altPrint(string,alt,tinfo) {
- if (alt != _altPrintSet) {
- printf "%s%s",_macs[alt],string
- _altPrintSet = alt
- }
- else
- printf "%s",string
- }
-
- # tiget: get terminfo capabilities.
- # capnames is a comma-separated list of terminfo capabilities to get.
- # Each capability is put in tinfo[], indexed by capability name.
- # If term is passed, it is the terminal type to get the capabilities for.
- # If not, the value of the environment variable TERM is used.
- # If noerror is true, error messages are suppressed.
- # Return value: the exit status of the last tput, or -1 if term is not passed
- # and there is no TERM environment variable.
- function tiget(capnames,tinfo,term,noerror, cmd,RS,ret,names,capname,i) {
- if (term == "")
- if ("TERM" in ENVIRON)
- term = ENVIRON["TERM"]
- else
- return -1
- split(capnames,names,",")
- RS = "" # this makes the record separator be "\n\n", which hopefully
- # is not very common in terminfo capabilities
- for (i = 1; i in names; i++) {
- capname = names[i]
- cmd = "exec tput -T " term " " capname
- if (noerror)
- cmd = cmd " 2>/dev/null"
- cmd | getline
- if (!(ret = close(cmd)))
- # printf interprets many of the escape chars in the same manner that
- # the terminfo library does... not perfect, but better than nothing
- tinfo[capname] = sprintf($0)
- }
- return ret
- }
-
- function tiget1(capname,term,noerror, capnames) {
- delete tinfo[capname]
- tiget(capname,tinfo,term,noerror)
- return tinfo[capname]
- }
- ### End of tinfo lib
-