(FILECREATED " 1-Aug-86 13:42:36" {ERIS}<LISPCORE>LIBRARY>CMLFORMAT.;15 94733
changes to: (FUNCTIONS FORMAT-ADD-COMMAS)
previous date: "21-Jul-86 15:01:01" {ERIS}<LISPCORE>LIBRARY>CMLFORMAT.;14)
(* Copyright (c) 1986 by Xerox Corporation. All rights reserved.)
(PRETTYCOMPRINT CMLFORMATCOMS)
(RPAQQ CMLFORMATCOMS
((DECLARE: EVAL@COMPILE DONTCOPY)
(STRUCTURES FORMAT-ERROR)
(FUNCTIONS MAKE-DISPATCH-VECTOR)
(INITVARS *FORMAT-DISPATCH-TABLE* CARDINAL-ONES CARDINAL-PERIODS CARDINAL-TEENS CARDINAL-TENS
ORDINAL-ONES ORDINAL-TENS)
(FNS FORMAT-INIT FORMAT-ERROR)
(P (FORMAT-INIT))
(VARIABLES *DIGIT-STRING* *DIGITS*)
(FUNCTIONS FLONUM-TO-STRING FLOAT-STRING FORMAT-WITH-CONTROL-STRING FORMAT-STRINGIFY-OUTPUT
POP-FORMAT-ARG WITH-FORMAT-PARAMETERS NEXTCHAR FORMAT-PEEK FORMAT-FIND-CHAR)
(FUNCTIONS FORMAT-GET-PARAMETER PARSE-FORMAT-OPERATION FORMAT-FIND-COMMAND FORMAT SUB-FORMAT
FORMAT-CAPITALIZATION FORMAT-ESCAPE FORMAT-SEMICOLON-ERROR FORMAT-UNTAGGED-CONDITION
FORMAT-FUNNY-CONDITION FORMAT-BOOLEAN-CONDITION FORMAT-CONDITION FORMAT-ITERATION
FORMAT-DO-ITERATION FORMAT-GET-TRAILING-SEGMENTS FORMAT-GET-SEGMENTS MAKE-PAD-SEGS
FORMAT-ROUND-COLUMNS FORMAT-JUSTIFICATION FORMAT-TERPRI FORMAT-FRESHLINE FORMAT-PAGE
FORMAT-TILDE FORMAT-EAT-WHITESPACE FORMAT-NEWLINE FORMAT-PLURAL FORMAT-SKIP-ARGUMENTS
FORMAT-INDIRECTION FORMAT-TAB FORMAT-PRINC FORMAT-PRIN1 FORMAT-PRINT-CHARACTER
FORMAT-PRINT-NAMED-CHARACTER FORMAT-ADD-COMMAS FORMAT-WRITE-FIELD FORMAT-PRINT-NUMBER
FORMAT-PRINT-SMALL-CARDINAL FORMAT-PRINT-CARDINAL FORMAT-PRINT-CARDINAL-AUX
FORMAT-PRINT-ORDINAL FORMAT-PRINT-OLD-ROMAN FORMAT-PRINT-ROMAN FORMAT-PRINT-DECIMAL
FORMAT-PRINT-BINARY FORMAT-PRINT-OCTAL FORMAT-PRINT-HEXADECIMAL FORMAT-PRINT-RADIX
FORMAT-FIXED FORMAT-FIXED-AUX FORMAT-EXPONENTIAL FORMAT-EXPONENT-MARKER FORMAT-EXP-AUX
FORMAT-GENERAL-FLOAT FORMAT-GENERAL-AUX FORMAT-DOLLARS)
(FUNCTIONS CHARPOS FLONUM-TO-STRING WHITESPACE-CHAR-P)
(VARIABLES *ERROR-OUTPUT* *FORMAT-ARGUMENTS* *FORMAT-CONTROL-STRING* *FORMAT-DISPATCH-TABLE*
*FORMAT-INDEX* *FORMAT-LENGTH* *FORMAT-ORIGINAL-ARGUMENTS* *PRINT-BASE*
*STANDARD-OUTPUT* *TERMINAL-IO* CARDINAL-ONES CARDINAL-PERIODS CARDINAL-TEENS
CARDINAL-TENS ORDINAL-ONES ORDINAL-TENS)
(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS (ADDVARS (NLAMA)
(NLAML)
(LAMA FORMAT-ERROR)))))
(DECLARE: EVAL@COMPILE DONTCOPY )
(DEFINE-CONDITION FORMAT-ERROR CL:ERROR :REPORT-FUNCTION (CL:LAMBDA (CONDITION *STANDARD-OUTPUT*)
(DECLARE (SPECVARS *STANDARD-OUTPUT*)
)
(FORMAT T "~%%~:{~@?~%%~}"
(FORMAT-ERROR-ARGS CONDITION))
)
ARGS)
(DEFMACRO MAKE-DISPATCH-VECTOR (&BODY ENTRIES)
(* Hairy dispatch-table initialization macro.
Takes a list of two-element lists (<character> <function-object>) and returns a
vector char-code-limit elements in length, where the Ith element is the
function associated with the character with char-code I.
If the character is case-convertible, it must be given in only one case
however, an entry in the vector will be made for both.
*)
(LET ((ENTRIES (MAPCAN (FUNCTION (CL:LAMBDA (X)
(LET ((LOWER (CHAR-DOWNCASE (CAR X)))
(UPPER (CHAR-UPCASE (CAR X))))
(CL:IF (CHAR= LOWER UPPER)
(LIST X)
(LIST (CONS UPPER (CDR X))
(CONS LOWER (CDR X)))))))
ENTRIES)))
(CL:DO ((ENTRIES (SORT ENTRIES (FUNCTION (CL:LAMBDA (X Y)
(CHAR< (CAR X)
(CAR Y))))))
(CHARIDX 0 (1+ CHARIDX))
(COMTAB NIL (CONS (CL:IF ENTRIES (CL:IF (= (CHAR-CODE (CAAR ENTRIES))
CHARIDX)
(CADR (pop ENTRIES))
NIL)
NIL)
COMTAB)))
((= CHARIDX 256)
(CL:IF ENTRIES (CL:ERROR "Garbage in dispatch vector - ~S" ENTRIES))
(BQUOTE (MAKE-ARRAY (QUOTE (256))
:ELEMENT-TYPE T :INITIAL-CONTENTS (QUOTE (\, (CL:NREVERSE COMTAB)))))))))
(RPAQ? *FORMAT-DISPATCH-TABLE* NIL)
(RPAQ? CARDINAL-ONES NIL)
(RPAQ? CARDINAL-PERIODS NIL)
(RPAQ? CARDINAL-TEENS NIL)
(RPAQ? CARDINAL-TENS NIL)
(RPAQ? ORDINAL-ONES NIL)
(RPAQ? ORDINAL-TENS NIL)
(DEFINEQ
(FORMAT-INIT
[CL:LAMBDA NIL (* amd " 2-May-86 17:36")
[MACROLET [(NAME-ARRAY (CONTENTS)
(BQUOTE (MAKE-ARRAY [QUOTE ((\, (LENGTH CONTENTS]
:ELEMENT-TYPE T :INITIAL-CONTENTS (QUOTE (\, CONTENTS]
(SETQ CARDINAL-ONES (NAME-ARRAY (NIL "one" "two" "three" "four" "five" "six" "seven"
"eight" "nine")))
(SETQ CARDINAL-TENS (NAME-ARRAY (NIL NIL "twenty" "thirty" "forty" "fifty" "sixty"
"seventy" "eighty" "ninety")))
(SETQ CARDINAL-TEENS (NAME-ARRAY ("ten" "eleven" "twelve" "thirteen" "fourteen"
"fifteen" "sixteen" "seventeen" "eighteen"
"nineteen")))
(SETQ CARDINAL-PERIODS
(NAME-ARRAY ("" " thousand" " million" " billion" " trillion" " quadrillion"
" quintillion" " sextillion" " septillion" " octillion" " nonillion"
" decillion")))
(SETQ ORDINAL-ONES (NAME-ARRAY (NIL "first" "second" "third" "fourth" "fifth" "sixth"
"seventh" "eighth" "ninth")))
(SETQ ORDINAL-TENS (NAME-ARRAY (NIL "tenth" "twentieth" "thirtieth" "fourtieth"
"fiftieth" "sixtieth" "seventieth" "eightieth"
"ninetieth"]
(SETQ *FORMAT-DISPATCH-TABLE* (MAKE-DISPATCH-VECTOR (|\B FORMAT-PRINT-BINARY)
(|\O FORMAT-PRINT-OCTAL)
(|\D FORMAT-PRINT-DECIMAL)
(|\X FORMAT-PRINT-HEXADECIMAL)
(|\R FORMAT-PRINT-RADIX)
(|\F FORMAT-FIXED)
(|\E FORMAT-EXPONENTIAL)
(|\G FORMAT-GENERAL-FLOAT)
(|\A FORMAT-PRINC)
(|\C FORMAT-PRINT-CHARACTER)
(|\P FORMAT-PLURAL)
(|\S FORMAT-PRIN1)
(|\T FORMAT-TAB)
(|\% FORMAT-TERPRI)
(|\& FORMAT-FRESHLINE)
(|\* FORMAT-SKIP-ARGUMENTS)
(|\| FORMAT-PAGE)
(|\~ FORMAT-TILDE)
(|\$ FORMAT-DOLLARS)
(|\? FORMAT-INDIRECTION)
(|\↑ FORMAT-ESCAPE)
(|\; FORMAT-SEMICOLON-ERROR)
(|\[ FORMAT-CONDITION)
(|\{ FORMAT-ITERATION)
(|\< FORMAT-JUSTIFICATION)
(|\( FORMAT-CAPITALIZATION)
(|\Newline FORMAT-NEWLINE])
(FORMAT-ERROR
[CL:LAMBDA (COMPLAINT &REST FORMAT-ARGS) (* amd " 2-May-86 17:13")
(CL:ERROR (QUOTE FORMAT-ERROR)
:ARGS
(LIST (LIST "~?~%%~S~%%~V@T↑" COMPLAINT FORMAT-ARGS *FORMAT-CONTROL-STRING*
(1+ *FORMAT-INDEX*])
)
(FORMAT-INIT)
(DEFVAR *DIGIT-STRING* (MAKE-ARRAY 50 :ELEMENT-TYPE (QUOTE STRING-CHAR)
:FILL-POINTER 0 :ADJUSTABLE T) )
(DEFVAR *DIGITS* "0123456789" )
(DEFUN FLONUM-TO-STRING (X &OPTIONAL WIDTH FDIGITS SCALE FMIN)
(COND
((CL:ZEROP X)
(VALUES "." 1 T T))
(T (SETF (FILL-POINTER *DIGIT-STRING*)
0)
(MULTIPLE-VALUE-BIND (SIG EXP)
(INTEGER-DECODE-FLOAT X)
(CL:IF (TYPEP X (QUOTE SHORT-FLOAT))
(FLOAT-STRING SIG EXP 20 WIDTH FDIGITS SCALE FMIN)
(FLOAT-STRING SIG EXP 53 WIDTH FDIGITS SCALE FMIN))))))
(DEFUN FLOAT-STRING (FRACTION EXPONENT PRECISION WIDTH FDIGITS SCALE FMIN)
(LET ((R FRACTION)
(S 1)
(M- 1)
(M+ 1)
(K 0)
(DIGITS 0)
(DECPNT 0)
(CUTOFF NIL)
(ROUNDUP NIL)
U LOW HIGH)
(COND
((> EXPONENT 0)
(CL:SETQ R (ASH FRACTION EXPONENT))
(CL:SETQ M- (ASH 1 EXPONENT))
(CL:SETQ M+ M-))
((< EXPONENT 0)
(CL:SETQ S (ASH 1 (- EXPONENT)))))
(CL:WHEN (= FRACTION (ASH 1 PRECISION))
(CL:SETQ M+ (ASH M+ 1))
(CL:SETQ R (ASH R 1))
(CL:SETQ S (ASH S 1)))
(CL:WHEN SCALE (CL:IF (MINUSP SCALE)
(LET ((SCALE-FACTOR (EXPT 10 (- SCALE))))
(CL:SETQ S (CL:* S SCALE-FACTOR)))
(LET ((SCALE-FACTOR (EXPT 10 SCALE)))
(CL:SETQ R (CL:* R SCALE-FACTOR))
(CL:SETQ M+ (CL:* M+ SCALE-FACTOR))
(CL:SETQ M- (CL:* M- SCALE-FACTOR)))))
(CL:DO NIL ((>= R (CEILING S 10)))
(DECF K)
(CL:SETQ R (CL:* R 10))
(CL:SETQ M- (CL:* M- 10))
(CL:SETQ M+ (CL:* M+ 10)))
(CL:DO NIL (NIL)
(CL:DO NIL ((< (+ (ASH R 1)
M+)
(ASH S 1)))
(CL:SETQ S (CL:* S 10))
(INCF K))
(COND
(FDIGITS (CL:SETQ CUTOFF (- FDIGITS))
(CL:IF (AND FMIN (> CUTOFF (- FMIN)))
(CL:SETQ CUTOFF (- FMIN))))
(WIDTH (CL:IF (< K 0)
(CL:SETQ CUTOFF (- 1 WIDTH))
(CL:SETQ CUTOFF (1+ (- K WIDTH))))
(CL:IF (AND FMIN (> CUTOFF (- FMIN)))
(CL:SETQ CUTOFF (- FMIN)))))
(CL:WHEN (OR FDIGITS WIDTH)
(LET ((A (- CUTOFF K))
(Y S))
(CL:IF (>= A 0)
(DOTIMES (I A)
(CL:SETQ Y (CL:* Y 10)))
(DOTIMES (I (- A))
(CL:SETQ Y (CEILING Y 10))))
(CL:SETQ M- (MAX Y M-))
(CL:SETQ M+ (MAX Y M+))
(CL:WHEN (= M+ Y)
(CL:SETQ ROUNDUP T))))
(CL:WHEN (< (+ (ASH R 1)
M+)
(ASH S 1))
(RETURN)))
(CL:WHEN (< K 0)
(CL:SETQ DECPNT DIGITS)
(VECTOR-PUSH-EXTEND |\. *DIGIT-STRING*)
(DOTIMES (I (- K))
(INCF DIGITS)
(VECTOR-PUSH-EXTEND |\0 *DIGIT-STRING*)))
(CL:DO NIL (NIL)
(DECF K)
(CL:WHEN (= K -1)
(VECTOR-PUSH-EXTEND |\. *DIGIT-STRING*)
(CL:SETQ DECPNT DIGITS))
(MULTIPLE-VALUE-SETQ (U R)
(TRUNCATE (CL:* R 10)
S))
(CL:SETQ M- (CL:* M- 10))
(CL:SETQ M+ (CL:* M+ 10))
(CL:SETQ LOW (< (ASH R 1)
M-))
(CL:IF ROUNDUP (CL:SETQ HIGH (>= (ASH R 1)
(- (ASH S 1)
M+)))
(CL:SETQ HIGH (> (ASH R 1)
(- (ASH S 1)
M+))))
(CL:WHEN (OR LOW HIGH (AND CUTOFF (<= K CUTOFF)))
(RETURN))
(VECTOR-PUSH-EXTEND (CHAR *DIGITS* U)
*DIGIT-STRING*)
(INCF DIGITS))
(CL:WHEN (OR (NOT CUTOFF)
(>= K CUTOFF))
(VECTOR-PUSH-EXTEND (CHAR *DIGITS* (COND
((AND LOW (NOT HIGH))
U)
((AND HIGH (NOT LOW))
(1+ U))
(T (CL:IF (<= (ASH R 1)
S)
U
(1+ U)))))
*DIGIT-STRING*)
(INCF DIGITS))
(CL:WHEN (>= K 0)
(DOTIMES (I K)
(INCF DIGITS)
(VECTOR-PUSH-EXTEND |\0 *DIGIT-STRING*))
(VECTOR-PUSH-EXTEND |\. *DIGIT-STRING*)
(CL:SETQ DECPNT DIGITS))
(CL:WHEN FDIGITS (DOTIMES (I (- FDIGITS (- DIGITS DECPNT)))
(INCF DIGITS)
(VECTOR-PUSH-EXTEND |\0 *DIGIT-STRING*)))
(VALUES *DIGIT-STRING* (1+ DIGITS)
(= DECPNT 0)
(= DECPNT DIGITS)
DECPNT)))
(DEFMACRO FORMAT-WITH-CONTROL-STRING (CONTROL-STRING &BODY FORMS)
(* This macro establishes the correct environment for processing an indirect
control string. CONTROL-STRING is the string to process, and FORMS are the
forms to do the processing. They invariably will involve a call to SUB-FORMAT.
CONTROL-STRING is guaranteed to be evaluated exactly once.
*)
(BQUOTE (LET ((STRING (CL:IF (SIMPLE-STRING-P (\, CONTROL-STRING))
(\, CONTROL-STRING)
(COERCE (\, CONTROL-STRING)
(QUOTE SIMPLE-STRING)))))
(CL:DECLARE (TYPE SIMPLE-STRING STRING))
(CONDITION-CASE (LET ((*FORMAT-CONTROL-STRING* STRING)
(*FORMAT-LENGTH* (CL:LENGTH STRING))
(*FORMAT-INDEX* 0))
(\,@ FORMS))
(FORMAT-ERROR (C)
(CL:ERROR (QUOTE FORMAT-ERROR)
:ARGS
(CONS (LIST
"While processing indirect control string~%%~S~%%~V@T↑"
*FORMAT-CONTROL-STRING* (1+ *FORMAT-INDEX*))
(FORMAT-ERROR-ARGS C))))))))
(DEFMACRO FORMAT-STRINGIFY-OUTPUT (&BODY FORMS)
(* This macro rebinds collects output to the standard output stream in a
string. For efficiency, we avoid consing a new stream on every call.
A stack of string streams is maintained in order to guarantee re-entrancy.
*)
(BQUOTE (LET ((*STANDARD-OUTPUT* (MAKE-STRING-OUTPUT-STREAM)))
(\,@ FORMS)
(GET-OUTPUT-STREAM-STRING *STANDARD-OUTPUT*))))
(DEFMACRO POP-FORMAT-ARG NIL
(* Pops an argument from the current argument list.
This is either the list of arguments given to the top-level call to FORMAT, or
the argument list for the current iteration in a ~{~} construct.
An error is signalled if the argument list is empty.
*)
(QUOTE (CL:IF *FORMAT-ARGUMENTS* (CL:POP *FORMAT-ARGUMENTS*)
(FORMAT-ERROR "Missing argument"))))
(DEFMACRO WITH-FORMAT-PARAMETERS (PARMVAR PARMDEFS &BODY FORMS)
(* This macro decomposes the argument list returned by PARSE-FORMAT-OPERATION.
PARMVAR is the list of parameters. PARMDEFS is a list of lists of the form
(<var> <default>) %%. The FORMS are evaluated in an environment where each
<var> is bound to either the value of the parameter supplied in the parameter
list, or to its <default> value if the parameter was omitted or explicitly
defaulted. *)
(CL:DO ((PARMDEFS PARMDEFS (CDR PARMDEFS))
(BINDINGS NIL (CONS (BQUOTE ((\, (CAAR PARMDEFS))
(OR (CL:IF (\, PARMVAR)
(POP (\, PARMVAR)))
(\, (CADAR PARMDEFS)))))
BINDINGS)))
((NULL PARMDEFS)
(BQUOTE (LET (\, (CL:NREVERSE BINDINGS))
(CL:WHEN (\, PARMVAR)
(FORMAT-ERROR "Too many parameters"))
(\,@ FORMS))))))
(DEFMACRO NEXTCHAR NIL
(* Gets the next character from the current control string.
It is an error if there is none. Leave *format-index* pointing to the character
returned. *)
(QUOTE (CL:IF (< (INCF *FORMAT-INDEX*)
*FORMAT-LENGTH*)
(SCHAR *FORMAT-CONTROL-STRING* *FORMAT-INDEX*)
(FORMAT-ERROR "Syntax error"))))
(DEFMACRO FORMAT-PEEK NIL (* Returns the current character, i.e.
the one pointed to by *format-index*.
*)
(QUOTE (SCHAR *FORMAT-CONTROL-STRING* *FORMAT-INDEX*)))
(DEFMACRO FORMAT-FIND-CHAR (CHAR START END)
(* Returns the index of the first occurrence of the specified character between
indices START (inclusive) and END (exclusive) in the control string.
*)
(BQUOTE (CL:POSITION (\, CHAR)
(THE SIMPLE-STRING *FORMAT-CONTROL-STRING*)
:START
(\, START)
:END
(\, END)
:TEST
(FUNCTION CHAR=))))
(DEFUN FORMAT-GET-PARAMETER NIL (* amd "25-Apr-86 18:44")
(* Attempts to parse a parameter, starting at the current index.
Returns the value of the parameter, or NIL if none is found.
On exit, *format-index* points to the first character which is not a part of
the recognized parameter. *)
(CASE (FORMAT-PEEK)
(|\# (NEXTCHAR)
(CL:LENGTH *FORMAT-ARGUMENTS*))
((|\V |\v)
(PROG1 (POP-FORMAT-ARG)
(NEXTCHAR)))
(|\' (PROG1 (NEXTCHAR)
(NEXTCHAR)))
((|\0 |\1 |\2 |\3 |\4 |\5 |\6 |\7 |\8 |\9)
(CL:DO* ((NUMBER (DIGIT-CHAR-P (FORMAT-PEEK))
(+ (CL:* 10 NUMBER)
(DIGIT-CHAR-P (FORMAT-PEEK)))))
((NOT (DIGIT-CHAR-P (NEXTCHAR)))
NUMBER)))
(T NIL)))
(DEFUN PARSE-FORMAT-OPERATION NIL (* amd " 1-May-86 14:33")
(* Parses a format directive, including flags and parameters.
On entry, *format-index* should point to the "~" preceding the command.
On exit, *format-index* points to the command character itself.
Returns the list of parameters, the ":" flag, the "@" flag, and the command
character as multiple values. Explicitly defaulted parameters appear in the
list of parameters as NIL. Omitted parameters are simply not included in the
list at all. *)
(LET ((CH (NEXTCHAR)))
(VALUES (CL:IF (OR (DIGIT-CHAR-P CH)
(CL:MEMBER CH
(QUOTE (|\, |\# |\V |\v |\'))
:TEST
(FUNCTION CHAR=)))
(CL:DO ((PARMS (LIST (FORMAT-GET-PARAMETER))
(CONS (FORMAT-GET-PARAMETER)
PARMS)))
((CHAR/= (FORMAT-PEEK)
|\,)
(CL:NREVERSE PARMS))
(NEXTCHAR))
(QUOTE NIL))
(CL:IF (CHAR= (FORMAT-PEEK)
|\:)
(NEXTCHAR)
NIL)
(CL:IF (CHAR= (FORMAT-PEEK)
|\@)
(NEXTCHAR)
NIL)
(FORMAT-PEEK))))
(DEFUN FORMAT-FIND-COMMAND (COMMAND-LIST) (* jrb: "15-May-86 14:53")
(* Starting at the current value of *format-index*, finds the first occurrence
of one of the specified directives. Embedded constructs, i.e.
those inside ~ (~) %%, ~%[~%], ~{~}, or ~<~>, are ignored.
And error is signalled if no satisfactory command is found.
Otherwise, the following are returned as multiple values: The value of
*format-index* at the start of the search The index of the "~" character
preceding the command The parameter list of the command The ":" flag The "@"
flag The command character Implementation note: The present implementation is
not particulary careful with storage allocation.
It would be a good idea to have a separate function for skipping embedded
constructs which did not bother to cons parameter lists and then throw them
away. We go to some trouble here to use CL:POSITION for most of the searching.
*)
(LET ((START *FORMAT-INDEX*))
(CL:DO ((PLACE START *FORMAT-INDEX*)
(TILDE (FORMAT-FIND-CHAR |\~ START *FORMAT-LENGTH*)
(FORMAT-FIND-CHAR |\~ PLACE *FORMAT-LENGTH*)))
((NOT TILDE)
(FORMAT-ERROR "Expecting one of ~S" COMMAND-LIST))
(SETQ *FORMAT-INDEX* TILDE)
(MULTIPLE-VALUE-BIND (PARMS COLON ATSIGN COMMAND)
(PARSE-FORMAT-OPERATION)
(CL:WHEN (MEMBER COMMAND COMMAND-LIST :TEST (FUNCTION CHAR=))
(RETURN (VALUES START TILDE PARMS COLON ATSIGN COMMAND)))
NIL
(CASE COMMAND (|\{ (NEXTCHAR)
(FORMAT-FIND-COMMAND (QUOTE (|\}))))
(|\< (NEXTCHAR)
(FORMAT-FIND-COMMAND (QUOTE (|\>))))
(|\( (NEXTCHAR)
(FORMAT-FIND-COMMAND (QUOTE (|\)))))
(|\[ (NEXTCHAR)
(FORMAT-FIND-COMMAND (QUOTE (|\]))))
((|\} |\> |\) |\])
(FORMAT-ERROR "No matching bracket")))))))
(DEFUN FORMAT (DESTINATION CONTROL-STRING &REST FORMAT-ARGUMENTS)
(* amd " 5-May-86 20:03")
(LET ((*FORMAT-ORIGINAL-ARGUMENTS* FORMAT-ARGUMENTS)
(*FORMAT-ARGUMENTS* FORMAT-ARGUMENTS)
(*FORMAT-CONTROL-STRING* (CL:IF (SIMPLE-STRING-P CONTROL-STRING)
CONTROL-STRING
(CL:COERCE CONTROL-STRING (QUOTE SIMPLE-STRING)))))
(COND
((NOT DESTINATION)
(FORMAT-STRINGIFY-OUTPUT (CATCH (QUOTE FORMAT-ESCAPE)
(CATCH (QUOTE FORMAT-COLON-ESCAPE)
(SUB-FORMAT 0 (CL:LENGTH CONTROL-STRING))))))
((AND (STRINGP DESTINATION)
(ARRAY-HAS-FILL-POINTER-P DESTINATION))
(WITH-OUTPUT-TO-STRING (*STANDARD-OUTPUT* DESTINATION)
(CATCH (QUOTE FORMAT-ESCAPE)
(CATCH (QUOTE FORMAT-COLON-ESCAPE)
(SUB-FORMAT 0 (CL:LENGTH CONTROL-STRING)))))
NIL)
(T (LET ((*STANDARD-OUTPUT* (CL:IF (EQ DESTINATION T)
*STANDARD-OUTPUT* DESTINATION)))
(CATCH (QUOTE FORMAT-ESCAPE)
(CATCH (QUOTE FORMAT-COLON-ESCAPE)
(SUB-FORMAT 0 (CL:LENGTH CONTROL-STRING))))
NIL)))))
(DEFUN SUB-FORMAT (START END) (* amd " 2-May-86 16:39")
(* This function does the real work of format.
The segment of the control string between indiced START
(inclusive) and END (exclusive) is processed as follows: Text not part of a
directive is output without further processing.
Directives are parsed along with their parameters and flags, and the
appropriate handlers invoked with the arguments COLON, ATSIGN, and PARMS.
Implementation Note: FORMAT-FIND-CHAR uses the CL:POSITION stream operation for
speed. This is potentially faster than character-at-a-time searching.
*)
(LET ((*FORMAT-INDEX* START)
(*FORMAT-LENGTH* END))
(DECLARE (SPECVARS *FORMAT-INDEX* *FORMAT-LENGTH*))
(CL:DO* ((PLACE START *FORMAT-INDEX*)
(TILDE (FORMAT-FIND-CHAR |\~ START END)
(FORMAT-FIND-CHAR |\~ PLACE END)))
((NOT TILDE)
(WRITE-STRING *FORMAT-CONTROL-STRING* *STANDARD-OUTPUT* :START PLACE :END END))
(CL:WHEN (> TILDE PLACE)
(WRITE-STRING *FORMAT-CONTROL-STRING* *STANDARD-OUTPUT* :START PLACE :END TILDE
))
(SETQ *FORMAT-INDEX* TILDE)
(MULTIPLE-VALUE-BIND (PARMS COLON ATSIGN COMMAND)
(PARSE-FORMAT-OPERATION)
(LET ((CMDFUN (SVREF *FORMAT-DISPATCH-TABLE* (CHAR-CODE COMMAND))))
(CL:IF CMDFUN (FUNCALL CMDFUN COLON ATSIGN PARMS)
(FORMAT-ERROR "Illegal FORMAT command ~~~C" COMMAND))))
(CL:UNLESS (< (INCF *FORMAT-INDEX*)
END)
(RETURN)))))
(DEFUN FORMAT-CAPITALIZATION (COLON ATSIGN PARMS) (* amd " 2-May-86 18:53")
(CL:WHEN PARMS (FORMAT-ERROR "No parameters allowed to ~~("))
(NEXTCHAR)
(MULTIPLE-VALUE-BIND (PREV TILDE END-PARMS END-COLON END-ATSIGN)
(FORMAT-FIND-COMMAND (QUOTE (|\))))
(CL:WHEN (OR END-PARMS END-COLON END-ATSIGN)
(FORMAT-ERROR "Flags or parameters not allowed"))
(LET* ((ESCAPE NIL)
(STRING (FORMAT-STRINGIFY-OUTPUT (SETQ ESCAPE (QUOTE FORMAT-COLON-ESCAPE))
(CATCH (QUOTE FORMAT-COLON-ESCAPE)
(LET ((SUB-ESCAPE (QUOTE FORMAT-ESCAPE)))
(CATCH (QUOTE FORMAT-ESCAPE)
(SUB-FORMAT PREV TILDE)
(SETQ SUB-ESCAPE NIL))
(CL:SETQ ESCAPE SUB-ESCAPE))))))
(WRITE-STRING (COND
((AND ATSIGN COLON)
(NSTRING-UPCASE STRING))
(COLON (NSTRING-CAPITALIZE STRING))
(ATSIGN (LET ((STRLEN (CL:LENGTH STRING)))
(* Capitalize the first word only *)
(NSTRING-DOWNCASE STRING)
(CL:DO ((I 0 (1+ I)))
((OR (<= STRLEN I)
(ALPHA-CHAR-P (CHAR STRING I)))
(SETF (CHAR STRING I)
(CHAR-UPCASE (CHAR STRING I)))
STRING))))
(T (NSTRING-DOWNCASE STRING))))
(AND ESCAPE (THROW ESCAPE NIL)))))
(DEFUN FORMAT-ESCAPE (COLON ATSIGN PARMS) (* Up and Out (Escape) ~↑ *)
(CL:WHEN ATSIGN (FORMAT-ERROR "FORMAT command ~~~:[~;:~]@↑ is undefined" COLON))
(CL:WHEN (CL:IF (CL:FIRST PARMS)
(CL:IF (SECOND PARMS)
(CL:IF (THIRD PARMS)
(TYPECASE (SECOND PARMS)
(INTEGER (<= (CL:FIRST PARMS)
(SECOND PARMS)
(THIRD PARMS)))
(CHARACTER (CHAR< (CL:FIRST PARMS)
(SECOND PARMS)
(THIRD PARMS)))
(T NIL))
(EQUAL (CL:FIRST PARMS)
(SECOND PARMS)))
(ZEROP (CL:FIRST PARMS)))
(NOT *FORMAT-ARGUMENTS*))
(THROW (CL:IF COLON (QUOTE FORMAT-COLON-ESCAPE)
(QUOTE FORMAT-ESCAPE))
NIL)))
(DEFUN FORMAT-SEMICOLON-ERROR (COLON ATSIGN PARAMS) (* amd " 2-May-86 17:32")
(DECLARE (IGNORE COLON ATSIGN PARAMS))
(FORMAT-ERROR "Unexpected semicolon (probably a missing ~~ somewhere)."))
(DEFUN FORMAT-UNTAGGED-CONDITION NIL (* jrb: "19-May-86 21:53")
(* ~%[ *)
(LET ((TEST (POP-FORMAT-ARG)))
(CL:UNLESS (INTEGERP TEST)
(FORMAT-ERROR "Argument to ~~[ must be integer - ~S"
TEST))
(CL:DO ((CL:COUNT 0 (1+ CL:COUNT)))
((= CL:COUNT TEST)
(MULTIPLE-VALUE-BIND (PREV TILDE PARMS COLON ATSIGN
CMD)
(FORMAT-FIND-COMMAND (QUOTE (|\; |\])))
(DECLARE (IGNORE COLON))
(CL:WHEN ATSIGN (FORMAT-ERROR
"Atsign flag not allowed"
))
(CL:WHEN PARMS (FORMAT-ERROR
"No parameters allowed"
))
(SUB-FORMAT PREV TILDE)
(CL:UNLESS (CHAR= CMD |\])
(FORMAT-FIND-COMMAND (QUOTE (|\])))))
)
(MULTIPLE-VALUE-BIND
(PREV TILDE PARMS COLON ATSIGN CMD)
(FORMAT-FIND-COMMAND (QUOTE (|\; |\])))
(DECLARE (IGNORE PREV TILDE))
(CL:WHEN ATSIGN (FORMAT-ERROR
"Atsign flag not allowed"))
(CL:WHEN PARMS (FORMAT-ERROR
"Parameters not allowed"))
(CL:WHEN (CHAR= CMD |\])
(RETURN))
(CL:WHEN COLON (NEXTCHAR)
(MULTIPLE-VALUE-BIND
(PREV TILDE PARMS COLON ATSIGN CMD)
(FORMAT-FIND-COMMAND (QUOTE (|\; |\])))
(DECLARE (IGNORE PARMS COLON ATSIGN))
(SUB-FORMAT PREV TILDE)
(CL:UNLESS (CHAR= CMD |\])
(FORMAT-FIND-COMMAND (QUOTE (|\]))))
)
(RETURN))
(NEXTCHAR)))))
(DEFUN FORMAT-FUNNY-CONDITION NIL (* jrb: "19-May-86 21:51")
(* ~@%[ *)
(MULTIPLE-VALUE-BIND (PREV TILDE PARMS COLON ATSIGN)
(FORMAT-FIND-COMMAND (QUOTE (|\])))
(CL:WHEN (OR COLON ATSIGN PARMS)
(FORMAT-ERROR "Flags or arguments not allowed"))
(CL:IF *FORMAT-ARGUMENTS* (CL:IF (CAR *FORMAT-ARGUMENTS*)
(SUB-FORMAT PREV TILDE)
(CL:POP *FORMAT-ARGUMENTS*)
)
(FORMAT-ERROR "Missing argument"))))
(DEFUN FORMAT-BOOLEAN-CONDITION NIL (* amd " 1-May-86 16:48")
(* ~:%[ *)
(MULTIPLE-VALUE-BIND (PREV TILDE PARMS COLON ATSIGN)
(FORMAT-FIND-COMMAND (QUOTE (|\;)))
(CL:WHEN (OR PARMS COLON ATSIGN)
(FORMAT-ERROR "Flags or parameters not allowed"))
(NEXTCHAR)
(CL:IF (POP-FORMAT-ARG)
(MULTIPLE-VALUE-BIND (PREV TILDE PARMS COLON ATSIGN
)
(FORMAT-FIND-COMMAND (QUOTE (|\])))
(CL:WHEN (OR COLON ATSIGN PARMS)
(FORMAT-ERROR
"Flags or parameters not allowed"
))
(SUB-FORMAT PREV TILDE))
(PROGN (SUB-FORMAT PREV TILDE)
(FORMAT-FIND-COMMAND (QUOTE (|\])))))))
(DEFUN FORMAT-CONDITION (COLON ATSIGN PARMS) (CL:WHEN PARMS (CL:PUSH (POP PARMS)
*FORMAT-ARGUMENTS*)
(CL:UNLESS (NULL PARMS)
(FORMAT-ERROR "Too many parameters to ~[")
))
(NEXTCHAR)
(COND
(COLON (CL:WHEN ATSIGN (FORMAT-ERROR
"~~:@[ undefined"))
(FORMAT-BOOLEAN-CONDITION))
(ATSIGN (FORMAT-FUNNY-CONDITION))
(T (FORMAT-UNTAGGED-CONDITION))))
(DEFUN FORMAT-ITERATION (COLON ATSIGN PARMS) (* Iteration ~{ ... ~} *)
(WITH-FORMAT-PARAMETERS PARMS ((MAX-ITER -1))
(NEXTCHAR)
(MULTIPLE-VALUE-BIND (PREV TILDE END-PARMS END-COLON END-ATSIGN)
(FORMAT-FIND-COMMAND (QUOTE (|\})))
(CL:WHEN (OR END-ATSIGN END-PARMS)
(FORMAT-ERROR "Illegal terminator for ~~{"))
(CL:IF (= PREV TILDE)
(LET ((STRING (POP-FORMAT-ARG))) (* Use an argument as the control
string if ~{~} is empty *)
(CL:UNLESS (STRINGP STRING)
(FORMAT-ERROR "Control string is not a string"))
(FORMAT-WITH-CONTROL-STRING STRING (FORMAT-DO-ITERATION 0
*FORMAT-LENGTH* MAX-ITER COLON
ATSIGN END-COLON)))
(FORMAT-DO-ITERATION PREV TILDE MAX-ITER COLON ATSIGN END-COLON)))))
(DEFUN FORMAT-DO-ITERATION (START END MAX-ITER COLON ATSIGN AT-LEAST-ONCE-P)
(* jrb: "19-May-86 22:14")
(* The two catch tags FORMAT-ESCAPE and FORMAT-COLON-ESCAPE are needed here to
correctly implement ~↑ and ~:↑. The former aborts only the current iteration,
but the latter aborts the entire iteration process.
*)
(CATCH (QUOTE FORMAT-COLON-ESCAPE)
(CATCH (QUOTE FORMAT-ESCAPE)
(CL:IF ATSIGN (CL:DO ((CL:COUNT 0 (1+ CL:COUNT)))
((OR (= CL:COUNT MAX-ITER)
(AND (NULL *FORMAT-ARGUMENTS*)
(CL:IF (= CL:COUNT 0)
(NOT AT-LEAST-ONCE-P)
T))))
(CATCH (QUOTE FORMAT-ESCAPE)
(CL:IF COLON (LET* ((*ORIGINAL-ARGUMENTS* (
POP-FORMAT-ARG
))
(*FORMAT-ARGUMENTS*
*ORIGINAL-ARGUMENTS*))
(CL:UNLESS (LISTP *FORMAT-ARGUMENTS*)
(FORMAT-ERROR
"Argument must be a list"
))
(SUB-FORMAT START END))
(SUB-FORMAT START END))))
(LET* ((*ORIGINAL-ARGUMENTS* (POP-FORMAT-ARG))
(*FORMAT-ARGUMENTS* *ORIGINAL-ARGUMENTS*))
(CL:UNLESS (LISTP *FORMAT-ARGUMENTS*)
(FORMAT-ERROR "Argument must be a list"))
(CL:DO ((CL:COUNT 0 (1+ CL:COUNT)))
((OR (= CL:COUNT MAX-ITER)
(AND (NULL *FORMAT-ARGUMENTS*)
(CL:IF (= CL:COUNT 0)
(NOT AT-LEAST-ONCE-P)
T))))
(CATCH (QUOTE FORMAT-ESCAPE)
(CL:IF COLON (LET* ((*ORIGINAL-ARGUMENTS* (POP-FORMAT-ARG
))
(*FORMAT-ARGUMENTS*
*ORIGINAL-ARGUMENTS*))
(CL:UNLESS (LISTP *FORMAT-ARGUMENTS*)
(FORMAT-ERROR
"Argument must be a list of lists"
))
(SUB-FORMAT START END))
(SUB-FORMAT START END)))))))))
(DEFUN FORMAT-GET-TRAILING-SEGMENTS NIL
(* Parses a list of clauses delimited by ~ and terminated by ~>.
Recursively invoke SUB-FORMAT to process them, and return a list of the
results, the length of this list, and the total number of characters in the
strings composing the list. *)
(NEXTCHAR)
(MULTIPLE-VALUE-BIND
(PREV TILDE COLON ATSIGN PARMS CMD)
(FORMAT-FIND-COMMAND (QUOTE (|\; |\>)))
(CL:WHEN COLON (FORMAT-ERROR
"~~:; allowed only after first segment in ~~<"
))
(CL:WHEN (OR ATSIGN PARMS)
(FORMAT-ERROR "Flags and parameters not allowed"))
(LET ((STR (CATCH (QUOTE FORMAT-ESCAPE)
(FORMAT-STRINGIFY-OUTPUT (SUB-FORMAT
PREV TILDE)))))
(CL:IF STR (CL:IF (CHAR= CMD |\;)
(MULTIPLE-VALUE-BIND
(SEGMENTS NUMSEGS NUMCHARS)
(FORMAT-GET-TRAILING-SEGMENTS)
(VALUES (CONS STR SEGMENTS)
(1+ NUMSEGS)
(+ NUMCHARS (CL:LENGTH STR)))
)
(VALUES (LIST STR)
1
(CL:LENGTH STR)))
(VALUES NIL 0 0)))))
(DEFUN FORMAT-GET-SEGMENTS NIL (* Gets the first segment, which is
treated specially. Call
FORMAT-GET-TRAILING-SEGMENTS to get
the rest. *)
(MULTIPLE-VALUE-BIND
(PREV TILDE PARMS COLON ATSIGN CMD)
(FORMAT-FIND-COMMAND (QUOTE (|\; |\>)))
(CL:WHEN ATSIGN (FORMAT-ERROR "Atsign flag not allowed"))
(LET ((FIRST-SEG (FORMAT-STRINGIFY-OUTPUT (SUB-FORMAT PREV TILDE))))
(CL:IF (CHAR= CMD |\;)
(MULTIPLE-VALUE-BIND (SEGMENTS NUMSEGS NUMCHARS)
(FORMAT-GET-TRAILING-SEGMENTS)
(CL:IF COLON (VALUES FIRST-SEG PARMS SEGMENTS
NUMSEGS NUMCHARS)
(VALUES NIL NIL (CONS FIRST-SEG SEGMENTS)
(1+ NUMSEGS)
(+ (CL:LENGTH FIRST-SEG)
NUMCHARS))))
(VALUES NIL NIL (LIST FIRST-SEG)
1
(CL:LENGTH FIRST-SEG))))))
(DEFUN MAKE-PAD-SEGS (SPACES PADDINGS) (* amd " 1-May-86 16:30")
(* Given the total number of SPACES needed for padding, and the number of
padding segments needed (PADDINGS) %%, returns a list of such segments.
We try to allocate the spaces equally to each segment.
When this is not possible, we allocate the left-over spaces randomly, to
improve the appearance of many successive lines of justified text.
Query: Is this right? Perhaps consistency might be better for the kind of
applications ~<~> is used for. *)
(CL:DO* ((EXTRA-SPACE NIL (AND (PLUSP EXTRA-SPACES)
(< (RAND 0 (FLOAT 1))
(/ SEGS EXTRA-SPACES))))
(RESULT NIL (CONS (CL:IF EXTRA-SPACE (1+ MIN-SPACE)
MIN-SPACE)
RESULT))
(MIN-SPACE (TRUNCATE SPACES PADDINGS))
(EXTRA-SPACES (- SPACES (CL:* PADDINGS MIN-SPACE))
(CL:IF EXTRA-SPACE (1- EXTRA-SPACES)
EXTRA-SPACES))
(SEGS PADDINGS (1- SEGS)))
((ZEROP SEGS)
RESULT)))
(DEFUN FORMAT-ROUND-COLUMNS (WIDTH MINCOL COLINC) (* jrb: "15-May-86 17:56")
(* Determine the actual width to be used for a field requiring WIDTH characters
according to the following rule: If WIDTH is less than or equal to MINCOL, use
WIDTH as the actual width. Otherwise, round up to MINCOL + k CL:* COLINC for
the smallest possible positive integer k.
*)
(CL:IF (> WIDTH MINCOL)
WIDTH
(+ WIDTH (CL:* COLINC (CEILING (- MINCOL WIDTH)
COLINC)))))
(DEFUN FORMAT-JUSTIFICATION (COLON ATSIGN PARMS)
(WITH-FORMAT-PARAMETERS PARMS ((MINCOL 0)
(COLINC 1)
(MINPAD 0)
(PADCHAR |\Space))
(CL:UNLESS (AND (INTEGERP MINCOL)
(NOT (MINUSP MINCOL)))
(FORMAT-ERROR "Mincol must be a non-negative integer - ~S" MINCOL))
(CL:UNLESS (AND (INTEGERP COLINC)
(PLUSP COLINC))
(FORMAT-ERROR "Colinc must be a positive integer - ~S" COLINC))
(CL:UNLESS (AND (INTEGERP MINPAD)
(NOT (MINUSP MINPAD)))
(FORMAT-ERROR "Minpad must be a non-negative integer - ~S" MINPAD))
(CL:UNLESS (CHARACTERP PADCHAR)
(FORMAT-ERROR "Padchar must be a character - ~S" PADCHAR))
(NEXTCHAR)
(MULTIPLE-VALUE-BIND (SPECIAL-ARG SPECIAL-PARMS SEGMENTS NUMSEGS NUMCHARS)
(FORMAT-GET-SEGMENTS)
(LET* ((PADSEGS (+ (CL:IF (OR COLON (= NUMSEGS 1))
1 0)
(1- NUMSEGS)
(CL:IF ATSIGN 1 0)))
(WIDTH (FORMAT-ROUND-COLUMNS (+ NUMCHARS (CL:* MINPAD PADSEGS))
MINCOL COLINC))
(SPACES (APPEND (CL:IF (OR COLON (= NUMSEGS 1))
NIL
(QUOTE (0)))
(MAKE-PAD-SEGS (- WIDTH NUMCHARS)
PADSEGS)
(CL:IF ATSIGN NIL (QUOTE (0))))))
(CL:WHEN SPECIAL-ARG (WITH-FORMAT-PARAMETERS
SPECIAL-PARMS
((SPARE 0)
(LINEL (OR (LINE-LENGTH)
72)))
(LET ((POS (OR (CHARPOS *STANDARD-OUTPUT*)
0)))
(CL:WHEN (> (+ POS WIDTH SPARE)
LINEL)
(WRITE-STRING SPECIAL-ARG)))))
(CL:DO ((SEGS SEGMENTS (CDR SEGS))
(SPCS SPACES (CDR SPCS)))
((NULL SEGS)
(DOTIMES (I (CAR SPCS))
(WRITE-CHAR PADCHAR)))
(DOTIMES (I (CAR SPCS))
(WRITE-CHAR PADCHAR))
(WRITE-STRING (CAR SEGS)))))))
(DEFUN FORMAT-TERPRI (COLON ATSIGN PARMS) (* amd " 1-May-86 16:20")
(* Newline ~& *)
(CL:WHEN (OR COLON ATSIGN)
(FORMAT-ERROR "Flags not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((REPEAT-COUNT 1))
(DOTIMES (I REPEAT-COUNT)
(TERPRI *STANDARD-OUTPUT*))))
(DEFUN FORMAT-FRESHLINE (COLON ATSIGN PARMS) (* amd " 5-May-86 19:28")
(* Fresh-line ~%% *)
(CL:WHEN (OR COLON ATSIGN)
(FORMAT-ERROR "Flags not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((REPEAT-COUNT 1))
(FRESH-LINE)
(DOTIMES (I (1- REPEAT-COUNT))
(TERPRI *STANDARD-OUTPUT*))))
(DEFUN FORMAT-PAGE (COLON ATSIGN PARMS) (* " Page ~|" *)
(CL:WHEN (OR COLON ATSIGN)
(FORMAT-ERROR "Flags not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((REPEAT-COUNT 1))
(DOTIMES (I REPEAT-COUNT)
(WRITE-CHAR |\Page))))
(DEFUN FORMAT-TILDE (COLON ATSIGN PARMS) (* Print a tilde ~~ *)
(CL:WHEN (OR COLON ATSIGN)
(FORMAT-ERROR "Flags not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((REPEAT-COUNT 1))
(DOTIMES (I REPEAT-COUNT)
(WRITE-CHAR |\~))))
(DEFUN FORMAT-EAT-WHITESPACE NIL (* jrb: "19-May-86 11:11")
(* Continue control string on next
line ~<newline> *)
(NEXTCHAR)
(SETQ *FORMAT-INDEX* (LET ((NEXT-NON-WHITE (POSITION-IF-NOT
(CL:FUNCTION
WHITESPACE-CHAR-P
)
*FORMAT-CONTROL-STRING*
:START *FORMAT-INDEX*)))
(CL:IF NEXT-NON-WHITE (1- NEXT-NON-WHITE)
(CL:LENGTH *FORMAT-CONTROL-STRING*)
))))
(DEFUN FORMAT-NEWLINE (COLON ATSIGN PARMS) (* jrb: "19-May-86 15:08")
(CL:WHEN PARMS (FORMAT-ERROR "Parameters not allowed"))
(COND
(COLON (CL:WHEN ATSIGN (FORMAT-ERROR "~:@<newline> is undefined")))
(ATSIGN (TERPRI *STANDARD-OUTPUT*)
(* * "The *standard-output* should go away when TERPRI is fixed")
(FORMAT-EAT-WHITESPACE))
(T (FORMAT-EAT-WHITESPACE))))
(DEFUN FORMAT-PLURAL (COLON ATSIGN PARMS) (* Pluralize word ~P *)
(CL:WHEN PARMS (FORMAT-ERROR "Parameters not allowed"))
(CL:WHEN COLON (* Back up one argument first *)
(LET ((CDRS (- (CL:LENGTH *FORMAT-ORIGINAL-ARGUMENTS*)
(CL:LENGTH *FORMAT-ARGUMENTS*)
1)))
(CL:IF (MINUSP CDRS)
(FORMAT-ERROR "No previous argument")
(SETQ *FORMAT-ARGUMENTS* (NTHCDR CDRS *FORMAT-ORIGINAL-ARGUMENTS*)))))
(CL:IF (EQL (POP-FORMAT-ARG)
1)
(WRITE-STRING (CL:IF ATSIGN "y" ""))
(WRITE-STRING (CL:IF ATSIGN "ies" "s"))))
(DEFUN FORMAT-SKIP-ARGUMENTS (COLON ATSIGN PARMS) (* jrb: "19-May-86 22:15")
(* Skip arguments (relative goto) ~* *)
(WITH-FORMAT-PARAMETERS PARMS ((CL:COUNT 1))
(COND
(ATSIGN (CL:WHEN (OR (MINUSP CL:COUNT)
(> CL:COUNT (CL:LENGTH *FORMAT-ORIGINAL-ARGUMENTS*)))
(FORMAT-ERROR "Illegal to go to non-existant argument"))
(SETQ *FORMAT-ARGUMENTS* (NTHCDR CL:COUNT *FORMAT-ORIGINAL-ARGUMENTS*)))
(COLON (LET ((CDRS (- (CL:LENGTH *FORMAT-ORIGINAL-ARGUMENTS*)
(CL:LENGTH *FORMAT-ARGUMENTS*)
CL:COUNT)))
(CL:IF (MINUSP CDRS)
(FORMAT-ERROR "Skip to nonexistant argument")
(SETQ *FORMAT-ARGUMENTS* (NTHCDR CDRS *FORMAT-ORIGINAL-ARGUMENTS*))))
)
(T (CL:IF (> CL:COUNT (CL:LENGTH *FORMAT-ARGUMENTS*))
(FORMAT-ERROR "Skip to nonexistant argument")
(SETQ *FORMAT-ARGUMENTS* (NTHCDR CL:COUNT *FORMAT-ARGUMENTS*)))))))
(DEFUN FORMAT-INDIRECTION (COLON ATSIGN PARMS) (* amd " 1-May-86 15:04")
(* Indirection ~? *)
(CL:WHEN COLON (FORMAT-ERROR "Colon modifier not allowed"))
(CL:WHEN PARMS (FORMAT-ERROR "Parameters not allowed"))
(LET ((STRING (POP-FORMAT-ARG)))
(CL:UNLESS (STRINGP STRING)
(FORMAT-ERROR "Indirected control string is not a string"))
(FORMAT-WITH-CONTROL-STRING STRING (CL:IF ATSIGN (SUB-FORMAT 0 *FORMAT-LENGTH*)
(LET ((*FORMAT-ARGUMENTS* (POP-FORMAT-ARG)))
(SUB-FORMAT 0 *FORMAT-LENGTH*))))))
(DEFUN FORMAT-TAB (COLON ATSIGN PARMS) (* jrb: "19-May-86 15:33")
(* Tabulation ~T *)
(WITH-FORMAT-PARAMETERS
PARMS
((COLNUM 1)
(COLINC 1))
(CL:WHEN COLON (FORMAT-ERROR "Tab-to in pixel units not supported"))
(DOTIMES (X (1- (LET ((POSITION (POSITION *STANDARD-OUTPUT*)))
(COND
(POSITION (LET ((TABCOL (CL:* COLINC (CEILING (CL:IF ATSIGN
(+ POSITION COLNUM)
COLNUM)
COLINC))))
(CL:IF (> POSITION TABCOL)
(- COLINC (REM (- POSITION TABCOL)
COLINC))
(- TABCOL POSITION))))
(ATSIGN COLNUM)
(T 2)))))
(WRITE-CHAR |\Space *STANDARD-OUTPUT*))))
(DEFUN FORMAT-PRINC (COLON ATSIGN PARMS) (* amd " 1-May-86 15:19")
(* Ascii ~A *)
(LET ((ARG (POP-FORMAT-ARG)))
(CL:IF (NULL PARMS)
(CL:IF ARG (PRINC ARG)
(CL:IF COLON (WRITE-STRING "()")
(PRINC NIL)))
(WITH-FORMAT-PARAMETERS PARMS ((MINCOL 0)
(COLINC 1)
(MINPAD 0)
(PADCHAR |\Space))
(FORMAT-WRITE-FIELD (CL:IF ARG (PRINC-TO-STRING ARG)
(CL:IF COLON "()" (PRINC-TO-STRING NIL)))
MINCOL COLINC MINPAD PADCHAR ATSIGN)))))
(DEFUN FORMAT-PRIN1 (COLON ATSIGN PARMS) (* S-expression ~S *)
(LET ((ARG (POP-FORMAT-ARG)))
(CL:IF (NULL PARMS)
(CL:IF ARG (CL:PRIN1 ARG)
(CL:IF COLON (WRITE-STRING "()")
(CL:PRIN1 NIL)))
(WITH-FORMAT-PARAMETERS PARMS ((MINCOL 0)
(COLINC 1)
(MINPAD 0)
(PADCHAR |\Space))
(FORMAT-WRITE-FIELD (CL:IF ARG (PRIN1-TO-STRING ARG)
(CL:IF COLON "()" (PRIN1-TO-STRING NIL)))
MINCOL COLINC MINPAD PADCHAR ATSIGN)))))
(DEFUN FORMAT-PRINT-CHARACTER (COLON ATSIGN PARMS) (* Character ~C *)
(WITH-FORMAT-PARAMETERS PARMS NIL (LET ((CHAR (POP-FORMAT-ARG)))
(CL:UNLESS (CHARACTERP CHAR)
(FORMAT-ERROR "Argument must be a character"))
(COND
((AND ATSIGN (NOT COLON))
(CL:PRIN1 CHAR))
(T (FORMAT-PRINT-NAMED-CHARACTER CHAR COLON))))))
(DEFUN FORMAT-PRINT-NAMED-CHARACTER (CHAR LONGP) (* jrb: "16-May-86 10:56")
(* (WRITE-STRING (COND ((CHAR-BIT CHAR :CONTROL)
(CL:IF LONGP "Control-" "C-")) ((CHAR-BIT CHAR :META)
(CL:IF LONGP "Meta-" "M-")) ((CHAR-BIT CHAR :SUPER)
(CL:IF LONGP "Super-" "S-")) ((CHAR-BIT CHAR :HYPER)
(CL:IF LONGP "Hyper-" "H-")) (T ""))))
(LET* ((CH (CODE-CHAR (CHAR-CODE CHAR)))
(NAME (CHAR-NAME CH))) (* The calls to CODE-CHAR and
CHAR-CODE strip funny bits *)
(COND
(NAME (WRITE-STRING (STRING-CAPITALIZE (PRINC-TO-STRING NAME))))
((<= 0 (CHAR-CODE CHAR)
31) (* Print control characters as "↑"
<char> *)
(WRITE-CHAR |\↑)
(WRITE-CHAR (CODE-CHAR (+ 64 (CHAR-CODE CHAR)))))
(T (WRITE-CHAR CH)))))
(DEFUN FORMAT-ADD-COMMAS (STRING COMMACHAR) (* jrb: "16-May-86 11:12")
(* Insert commas after every third
digit, scanning from right to left.)
(* * Signs don't count in the final length)
(CL:DO* ((LENGTH (CL:LENGTH (THE STRING STRING)))
(NEW-LENGTH (+ LENGTH (CL:FLOOR (- LENGTH (CL:IF (OR (EQL (CHAR STRING 0)
|\+)
(EQL (CHAR STRING 0)
|\-))
2 1))
3)))
(NEW-STRING (MAKE-STRING NEW-LENGTH :INITIAL-ELEMENT COMMACHAR)
(CL:REPLACE (THE STRING NEW-STRING)
(THE STRING STRING)
:START1
(MAX 0 (- NEW-POS 3))
:END1 NEW-POS :START2 (MAX 0 (- POS 3))
:END2 POS))
(POS LENGTH (- POS 3))
(NEW-POS NEW-LENGTH (- NEW-POS 4)))
((NOT (PLUSP POS)) (* If there was a sign, put it back
now)
(CL:IF (OR (EQL (CHAR STRING 0)
|\+)
(EQL (CHAR STRING 0)
|\-))
(SETF (CHAR NEW-STRING 0)
(CHAR STRING 0)))
NEW-STRING)))
(DEFUN FORMAT-WRITE-FIELD (STRING MINCOL COLINC MINPAD PADCHAR PADLEFT)
(* Output a string in a field at MINCOL wide, padding with PADCHAR.
Pads on the left if PADLEFT is true, else on the right.
If the length of the string plus the minimum permissible padding, MINPAD, is
greater than MINCOL, the actual field size is rounded up to MINCOL + k CL:*
COLINC for the smallest possible positive integer k.
*)
(CL:UNLESS (AND (INTEGERP MINCOL)
(NOT (MINUSP MINCOL)))
(FORMAT-ERROR "Mincol must be a non-negative integer - ~S" MINCOL))
(CL:UNLESS (AND (INTEGERP COLINC)
(PLUSP COLINC))
(FORMAT-ERROR "Colinc must be a positive integer - ~S" COLINC))
(CL:UNLESS (AND (INTEGERP MINPAD)
(NOT (MINUSP MINPAD)))
(FORMAT-ERROR "Minpad must be a non-negative integer - ~S" MINPAD))
(CL:UNLESS (CHARACTERP PADCHAR)
(FORMAT-ERROR "Padchar must be a character - ~S" PADCHAR))
(LET* ((STRLEN (CL:LENGTH (THE STRING STRING)))
(WIDTH (FORMAT-ROUND-COLUMNS (+ STRLEN MINPAD)
MINCOL COLINC)))
(COND
(PADLEFT (DOTIMES (I (- WIDTH STRLEN))
(WRITE-CHAR PADCHAR))
(WRITE-STRING STRING))
(T (WRITE-STRING STRING)
(DOTIMES (I (- WIDTH STRLEN))
(WRITE-CHAR PADCHAR))))))
(DEFUN FORMAT-PRINT-NUMBER (NUMBER RADIX PRINT-COMMAS-P PRINT-SIGN-P PARMS)
(* This functions does most of the
work for the numeric printing
directives. The parameters are
interpreted as defined for ~D.
*)
(WITH-FORMAT-PARAMETERS PARMS ((MINCOL 0)
(PADCHAR |\Space)
(COMMACHAR |\,))
(LET* ((*PRINT-BASE* RADIX)
(TEXT (PRINC-TO-STRING NUMBER)))
(CL:IF (INTEGERP NUMBER)
(PROGN (* colinc = 1, minpad = 0, padleft = t
*)
(FORMAT-WRITE-FIELD (CL:IF (AND (PLUSP NUMBER)
PRINT-SIGN-P)
(CL:IF PRINT-COMMAS-P
(CONCATENATE (QUOTE STRING)
"+"
(FORMAT-ADD-COMMAS TEXT
COMMACHAR))
(CONCATENATE (QUOTE STRING)
"+" TEXT))
(CL:IF PRINT-COMMAS-P (FORMAT-ADD-COMMAS
TEXT COMMACHAR)
TEXT))
MINCOL 1 0 PADCHAR T))
(WRITE-STRING TEXT)))))
(DEFUN FORMAT-PRINT-SMALL-CARDINAL (N) (* amd "23-Apr-86 20:12")
(MULTIPLE-VALUE-BIND (HUNDREDS REM)
(TRUNCATE N 100)
(CL:WHEN (PLUSP HUNDREDS)
(WRITE-STRING (SVREF CARDINAL-ONES HUNDREDS))
(WRITE-STRING " hundred")
(CL:WHEN (PLUSP REM)
(WRITE-CHAR |\Space)))
(CL:WHEN (PLUSP REM)
(MULTIPLE-VALUE-BIND (TENS ONES)
(TRUNCATE REM 10)
(COND
((< 1 TENS)
(WRITE-STRING (SVREF CARDINAL-TENS TENS))
(CL:WHEN (PLUSP ONES)
(WRITE-CHAR |\-)
(WRITE-STRING (SVREF CARDINAL-ONES ONES))))
((= TENS 1)
(WRITE-STRING (SVREF CARDINAL-TEENS ONES)))
((PLUSP ONES)
(WRITE-STRING (SVREF CARDINAL-ONES ONES))))))))
(DEFUN FORMAT-PRINT-CARDINAL (N) (COND
((MINUSP N)
(WRITE-STRING "negative ")
(FORMAT-PRINT-CARDINAL-AUX (- N)
0 N))
((ZEROP N)
(WRITE-STRING "zero"))
(T (FORMAT-PRINT-CARDINAL-AUX N 0 N))))
(DEFUN FORMAT-PRINT-CARDINAL-AUX (N PERIOD ERR) (MULTIPLE-VALUE-BIND (BEYOND HERE)
(TRUNCATE N 1000)
(CL:UNLESS (<= PERIOD 10)
(FORMAT-ERROR
"Number too large to print in English: ~:D"
ERR))
(CL:UNLESS (ZEROP BEYOND)
(FORMAT-PRINT-CARDINAL-AUX BEYOND
(1+ PERIOD)
ERR))
(CL:UNLESS (ZEROP HERE)
(CL:UNLESS (ZEROP BEYOND)
(WRITE-CHAR |\Space))
(FORMAT-PRINT-SMALL-CARDINAL HERE)
(WRITE-STRING (SVREF CARDINAL-PERIODS
PERIOD)))))
(DEFUN FORMAT-PRINT-ORDINAL (N) (* amd "23-Apr-86 20:14")
(CL:WHEN (MINUSP N)
(WRITE-STRING "negative "))
(LET ((NUMBER (ABS N)))
(MULTIPLE-VALUE-BIND (TOP BOT)
(TRUNCATE NUMBER 100)
(CL:UNLESS (ZEROP TOP)
(FORMAT-PRINT-CARDINAL (- NUMBER BOT)))
(CL:WHEN (AND (PLUSP TOP)
(PLUSP BOT))
(WRITE-CHAR |\Space))
(MULTIPLE-VALUE-BIND (TENS ONES)
(TRUNCATE BOT 10)
(COND
((= BOT 12)
(WRITE-STRING "twelfth"))
((= TENS 1)
(WRITE-STRING (SVREF CARDINAL-TEENS ONES))
(WRITE-STRING "th"))
((AND (ZEROP TENS)
(PLUSP ONES))
(WRITE-STRING (SVREF ORDINAL-ONES ONES)))
((AND (ZEROP ONES)
(PLUSP TENS))
(WRITE-STRING (SVREF ORDINAL-TENS TENS)))
((PLUSP BOT)
(WRITE-STRING (SVREF CARDINAL-TENS TENS))
(WRITE-CHAR |\-)
(WRITE-STRING (SVREF ORDINAL-ONES ONES)))
((PLUSP NUMBER)
(WRITE-STRING "th"))
(T (WRITE-STRING "zeroeth")))))))
(DEFUN FORMAT-PRINT-OLD-ROMAN (N) (* Print Roman numerals *)
(CL:UNLESS (< 0 N 5000)
(FORMAT-ERROR "Number too large to print in old Roman numerals: ~:D" N))
(CL:DO ((CHAR-LIST (QUOTE (|\D |\C |\L |\X |\V |\I))
(CDR CHAR-LIST))
(VAL-LIST (QUOTE (500 100 50 10 5 1))
(CDR VAL-LIST))
(CUR-CHAR |\M (CAR CHAR-LIST))
(CUR-VAL 1000 (CAR VAL-LIST))
(START N (CL:DO ((I START (PROGN (WRITE-CHAR CUR-CHAR)
(- I CUR-VAL))))
((< I CUR-VAL)
I))))
((ZEROP START))))
(DEFUN FORMAT-PRINT-ROMAN (N) (CL:UNLESS (< 0 N 4000)
(FORMAT-ERROR "Number too large to print in Roman numerals: ~:D"
N))
(CL:DO ((CHAR-LIST (QUOTE (|\D |\C |\L |\X |\V |\I))
(CDR CHAR-LIST))
(VAL-LIST (QUOTE (500 100 50 10 5 1))
(CDR VAL-LIST))
(SUB-CHARS (QUOTE (|\C |\X |\X |\I |\I))
(CDR SUB-CHARS))
(SUB-VAL (QUOTE (100 10 10 1 1 0))
(CDR SUB-VAL))
(CUR-CHAR |\M (CAR CHAR-LIST))
(CUR-VAL 1000 (CAR VAL-LIST))
(CUR-SUB-CHAR |\C (CAR SUB-CHARS))
(CUR-SUB-VAL 100 (CAR SUB-VAL))
(START N (CL:DO ((I START (PROGN (WRITE-CHAR CUR-CHAR)
(- I CUR-VAL))))
((< I CUR-VAL)
(COND
((<= (- CUR-VAL CUR-SUB-VAL)
I)
(WRITE-CHAR CUR-SUB-CHAR)
(WRITE-CHAR CUR-CHAR)
(- I (- CUR-VAL CUR-SUB-VAL)))
(T I))))))
((ZEROP START))))
(DEFUN FORMAT-PRINT-DECIMAL (COLON ATSIGN PARMS) (* Decimal ~D *) (FORMAT-PRINT-NUMBER
(POP-FORMAT-ARG)
10 COLON ATSIGN PARMS))
(DEFUN FORMAT-PRINT-BINARY (COLON ATSIGN PARMS) (* Binary ~B *) (FORMAT-PRINT-NUMBER
(POP-FORMAT-ARG)
2 COLON ATSIGN PARMS))
(DEFUN FORMAT-PRINT-OCTAL (COLON ATSIGN PARMS) (* Octal ~O *) (FORMAT-PRINT-NUMBER
(POP-FORMAT-ARG)
8 COLON ATSIGN PARMS))
(DEFUN FORMAT-PRINT-HEXADECIMAL (COLON ATSIGN PARMS) (* Hexadecimal ~X *) (
FORMAT-PRINT-NUMBER
(POP-FORMAT-ARG)
16 COLON ATSIGN
PARMS))
(DEFUN FORMAT-PRINT-RADIX (COLON ATSIGN PARMS) (* Radix ~R *)
(LET ((NUMBER (POP-FORMAT-ARG)))
(CL:IF PARMS (FORMAT-PRINT-NUMBER NUMBER (pop PARMS)
COLON ATSIGN PARMS)
(CL:IF ATSIGN (CL:IF COLON (FORMAT-PRINT-OLD-ROMAN NUMBER)
(FORMAT-PRINT-ROMAN NUMBER))
(CL:IF COLON (FORMAT-PRINT-ORDINAL NUMBER)
(FORMAT-PRINT-CARDINAL NUMBER))))))
(DEFUN FORMAT-FIXED (COLON ATSIGN PARMS) (* Fixed-format floating point ~F *)
(CL:WHEN COLON (FORMAT-ERROR "Colon flag not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((W NIL)
(D NIL)
(K NIL)
(OVF NIL)
(PAD |\Space)) (* Note that the scale factor k
defaults to nil. This is interpreted
as *)
(* zero by flonum-to-string, but more
efficiently. *)
(LET ((NUMBER (POP-FORMAT-ARG)))
(CL:IF (FLOATP NUMBER)
(FORMAT-FIXED-AUX NUMBER W D K OVF PAD ATSIGN)
(CL:IF (RATIONALP NUMBER)
(FORMAT-FIXED-AUX (COERCE NUMBER (QUOTE SHORT-FLOAT))
W D K OVF PAD ATSIGN)
(LET ((*PRINT-BASE* 10))
(FORMAT-WRITE-FIELD (PRINC-TO-STRING NUMBER)
W 1 0 |\Space T)))))))
(DEFUN FORMAT-FIXED-AUX (NUMBER W D K OVF PAD ATSIGN)
(CL:IF (NOT (OR W D))
(CL:PRIN1 NUMBER)
(LET ((SPACELEFT W))
(CL:WHEN (AND W (OR ATSIGN (MINUSP NUMBER)))
(DECF SPACELEFT))
(MULTIPLE-VALUE-BIND (STR LEN LPOINT TPOINT)
(FLONUM-TO-STRING (ABS NUMBER)
SPACELEFT D K) (* if caller specifically requested no
fraction digits, suppress the *)
(* optional trailing zero *)
(CL:WHEN (AND D (ZEROP D))
(SETQ TPOINT NIL))
(CL:WHEN W (DECF SPACELEFT LEN) (* optional leading zero *)
(CL:WHEN LPOINT (* force at least one digit *)
(CL:IF (OR (> SPACELEFT 0)
TPOINT)
(DECF SPACELEFT)
(SETQ LPOINT NIL)))
(* optional trailing zero *)
(CL:WHEN TPOINT (CL:IF (> SPACELEFT 0)
(DECF SPACELEFT)
(SETQ TPOINT NIL))))
(COND
((AND W (< SPACELEFT 0)
OVF) (* field width overflow *)
(DOTIMES (I W)
(WRITE-CHAR OVF)))
(T (CL:WHEN W (DOTIMES (I SPACELEFT)
(WRITE-CHAR PAD)))
(CL:IF (MINUSP NUMBER)
(WRITE-CHAR |\-)
(CL:IF ATSIGN (WRITE-CHAR |\+)))
(CL:WHEN LPOINT (WRITE-CHAR |\0))
(WRITE-STRING STR)
(CL:WHEN TPOINT (WRITE-CHAR |\0))))))))
(DEFUN FORMAT-EXPONENTIAL (COLON ATSIGN PARMS) (* Exponential-format floating point
~E *)
(CL:WHEN COLON (FORMAT-ERROR "Colon flag not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((W NIL)
(D NIL)
(E 2)
(K 1)
(OVF NIL)
(PAD |\Space)
(MARKER NIL))
(LET ((NUMBER (POP-FORMAT-ARG)))
(CL:IF (FLOATP NUMBER)
(FORMAT-EXP-AUX NUMBER W D E K OVF PAD MARKER ATSIGN)
(CL:IF (RATIONALP NUMBER)
(FORMAT-EXP-AUX (COERCE NUMBER (QUOTE SHORT-FLOAT))
W D E K OVF PAD MARKER ATSIGN)
(LET ((*PRINT-BASE* 10))
(FORMAT-WRITE-FIELD (PRINC-TO-STRING NUMBER)
W 1 0 |\Space T)))))))
(DEFUN FORMAT-EXPONENT-MARKER (NUMBER) (CL:IF (TYPEP NUMBER *READ-DEFAULT-FLOAT-FORMAT*)
|\E
(TYPECASE NUMBER (SHORT-FLOAT |\S)
(SINGLE-FLOAT |\F)
(DOUBLE-FLOAT |\D)
(LONG-FLOAT |\L))))
(DEFUN FORMAT-EXP-AUX (NUMBER W D E K OVF PAD MARKER ATSIGN)
(* Here we prevent the scale factor from shifting all significance out of a
number to the right. We allow insignificant zeroes to be shifted in to the left
right, athough it is an error to specify k and d such that this occurs.
Perhaps we should detect both these condtions and flag them as errors.
As for now, we let the user get away with it, and merely guarantee that at
least one significant digit will appear.
*)
(CL:IF (NOT (OR W D))
(CL:PRIN1 NUMBER)
(MULTIPLE-VALUE-BIND (NUM EXPT)
(SCALE-EXPONENT (ABS NUMBER))
(LET* ((EXPT (- EXPT K))
(ESTR (PRINC-TO-STRING (ABS EXPT)))
(ELEN (CL:IF E (MAX (CL:LENGTH ESTR)
E)
(CL:LENGTH ESTR)))
(FDIG (CL:IF D (CL:IF (PLUSP K)
(1+ (- D K))
D)
NIL))
(FMIN (CL:IF (MINUSP K)
(- 1 K)
NIL))
(SPACELEFT (CL:IF W (- W 2 ELEN)
NIL)))
(CL:WHEN (OR ATSIGN (MINUSP NUMBER))
(DECF SPACELEFT))
(CL:IF (AND W E OVF (> ELEN E))
(PROGN (* exponent overflow *)
(DOTIMES (I W)
(WRITE-CHAR OVF)))
(MULTIPLE-VALUE-BIND (FSTR FLEN LPOINT TPOINT)
(FLONUM-TO-STRING NUM SPACELEFT FDIG K FMIN)
(CL:WHEN W (DECF SPACELEFT FLEN)
(CL:WHEN TPOINT (DECF SPACELEFT))
(CL:WHEN LPOINT (CL:IF (> SPACELEFT 0)
(DECF SPACELEFT)
(SETQ LPOINT NIL))))
(COND
((AND W (< SPACELEFT 0)
OVF) (* significand overflow *)
(DOTIMES (I W)
(WRITE-CHAR OVF)))
(T (CL:WHEN W (DOTIMES (I SPACELEFT)
(WRITE-CHAR PAD)))
(CL:IF (MINUSP NUMBER)
(WRITE-CHAR |\-)
(CL:IF ATSIGN (WRITE-CHAR |\+)))
(CL:WHEN LPOINT (WRITE-CHAR |\0))
(WRITE-STRING FSTR)
(CL:WHEN TPOINT (WRITE-CHAR |\0))
(WRITE-CHAR (CL:IF MARKER MARKER (FORMAT-EXPONENT-MARKER
NUMBER)))
(WRITE-CHAR (CL:IF (MINUSP EXPT)
|\- |\+))
(CL:WHEN E (* zero-fill before exponent if
necessary *)
(DOTIMES (I (- E (CL:LENGTH ESTR)))
(WRITE-CHAR |\0)))
(WRITE-STRING ESTR)))))))))
(DEFUN FORMAT-GENERAL-FLOAT (COLON ATSIGN PARMS) (* General Floating Point -
~G *)
(CL:WHEN COLON (FORMAT-ERROR "Colon flag not allowed"))
(WITH-FORMAT-PARAMETERS PARMS ((W NIL)
(D NIL)
(E NIL)
(K NIL)
(OVF |\*)
(PAD |\Space)
(MARKER NIL))
(LET ((NUMBER (POP-FORMAT-ARG))) (* The Excelsior edition does not say
what to do if *)
(* the argument is not a float.
Here, we adopt the *)
(* conventions used by ~F and ~E.
*)
(CL:IF (FLOATP NUMBER)
(FORMAT-GENERAL-AUX NUMBER W D E K OVF PAD MARKER ATSIGN)
(CL:IF (RATIONALP NUMBER)
(FORMAT-GENERAL-AUX (COERCE NUMBER (QUOTE SHORT-FLOAT))
W D E K OVF PAD MARKER ATSIGN)
(LET ((*PRINT-BASE* 10))
(FORMAT-WRITE-FIELD (PRINC-TO-STRING NUMBER)
W 1 0 |\Space T)))))))
(DEFUN FORMAT-GENERAL-AUX (NUMBER W D E K OVF PAD MARKER ATSIGN)
(MULTIPLE-VALUE-BIND (IGNORE N)
(SCALE-EXPONENT (ABS NUMBER))
(DECLARE (IGNORE IGNORE)) (* Default d if omitted.
The procedure is taken directly *)
(* from the definition given in the
manual, and is not *)
(* very efficient, since we generate
the digits twice. *)
(* Future maintainers are encouraged
to improve on this. *)
(CL:UNLESS D (MULTIPLE-VALUE-BIND (STR LEN)
(FLONUM-TO-STRING (ABS NUMBER))
(DECLARE (IGNORE STR))
(LET ((Q (CL:IF (= LEN 1)
1
(1- LEN))))
(SETQ D (MAX Q (MIN N 7))))))
(LET* ((EE (CL:IF E (+ E 2)
4))
(WW (CL:IF W (- W EE)
NIL))
(DD (- D N)))
(COND
((<= 0 DD D)
(FORMAT-FIXED-AUX NUMBER WW DD NIL OVF PAD ATSIGN)
(DOTIMES (I EE)
(WRITE-CHAR |\Space)))
(T (FORMAT-EXP-AUX NUMBER W D (OR E 2)
(OR K 1)
OVF PAD MARKER ATSIGN))))))
(DEFUN FORMAT-DOLLARS (COLON ATSIGN PARMS) (* jrb: "19-May-86 09:52")
(* Dollars floating-point format ~$ *)
(WITH-FORMAT-PARAMETERS PARMS ((D 2)
(N 1)
(FW 0)
(PAD |\Space))
(LET* ((NUMBER (POP-FORMAT-ARG))
(SIGNSTR (CL:IF (MINUSP NUMBER)
"-"
(CL:IF ATSIGN "+" ""))))
(MULTIPLE-VALUE-BIND (STR NUMLENGTH IG2 IG3 POINTPLACE)
(FLONUM-TO-STRING (ABS NUMBER)
NIL D NIL)
(DECLARE (IGNORE IG2 IG3))
(CL:WHEN COLON (WRITE-STRING SIGNSTR))
(DOTIMES (I (- FW NUMLENGTH (CL:LENGTH SIGNSTR)
(- N POINTPLACE)))
(WRITE-CHAR PAD))
(CL:UNLESS COLON (WRITE-STRING SIGNSTR))
(DOTIMES (I (- N POINTPLACE))
(WRITE-CHAR |\0))
(WRITE-STRING STR)))))
(DEFUN CHARPOS (STREAM) (CL:UNLESS (STREAMP STREAM)
(CL:ERROR "CHARPOS: ~A isn't a stream" STREAM))
(fetch (STREAM CHARPOSITION) of STREAM))
(DEFUN FLONUM-TO-STRING (X &OPTIONAL WIDTH FDIGITS SCALE FMIN)
(COND
((CL:ZEROP X)
(VALUES "." 1 T T))
(T (SETF (FILL-POINTER *DIGIT-STRING*)
0)
(MULTIPLE-VALUE-BIND (SIG EXP)
(INTEGER-DECODE-FLOAT X)
(CL:IF (TYPEP X (QUOTE SHORT-FLOAT))
(FLOAT-STRING SIG EXP 20 WIDTH FDIGITS SCALE FMIN)
(FLOAT-STRING SIG EXP 53 WIDTH FDIGITS SCALE FMIN))))))
(DEFUN WHITESPACE-CHAR-P (CH) (CL:MEMBER CH (QUOTE (|\Tab |\Page |\Space |\Backspace |\Newline |\Linefeed
))
:TEST
(CL:FUNCTION EQL)))
(DEFVAR *ERROR-OUTPUT* )
(DEFVAR *FORMAT-ARGUMENTS* NIL "List of FORMAT args yet unprocessed")
(DEFVAR *FORMAT-CONTROL-STRING* NIL "Bound to FORMAT control string")
(DEFVAR *FORMAT-DISPATCH-TABLE* NIL "Table of functions called by SUB-FORMAT to process ~foo stuff")
(DEFVAR *FORMAT-INDEX* NIL "Index into current control string")
(DEFVAR *FORMAT-LENGTH* NIL "Length of current control string")
(DEFVAR *FORMAT-ORIGINAL-ARGUMENTS* NIL "List of original FORMAT arguments")
(DEFVAR *PRINT-BASE* )
(DEFVAR *STANDARD-OUTPUT* T)
(DEFVAR *TERMINAL-IO* )
(DEFVAR CARDINAL-ONES NIL "Table of strings used by ~R")
(DEFVAR CARDINAL-PERIODS NIL "Table of strings used by ~R")
(DEFVAR CARDINAL-TEENS NIL "Table of strings used by ~R")
(DEFVAR CARDINAL-TENS NIL "Table of strings used by ~R")
(DEFVAR ORDINAL-ONES NIL "Table of strings used by ~R")
(DEFVAR ORDINAL-TENS NIL "Table of strings used by ~R")
(DECLARE: DONTEVAL@LOAD DOEVAL@COMPILE DONTCOPY COMPILERVARS
(ADDTOVAR NLAMA )
(ADDTOVAR NLAML )
(ADDTOVAR LAMA FORMAT-ERROR)
)
(PUTPROPS CMLFORMAT COPYRIGHT ("Xerox Corporation" 1986))
(DECLARE: DONTCOPY
(FILEMAP (NIL (5667 9579 (FORMAT-INIT 5677 . 9260) (FORMAT-ERROR 9262 . 9577)))))
STOP